JPH08116203A - Transformer coupler - Google Patents

Abstract

PURPOSE: To realize the small sized high frequency transformer coupler with a strong coupling degree by providing a sub line to the inside surrounded by a main line. CONSTITUTION: A main line 2 made of a closed track TR1 , and a film of a sub line 3 made of a thick film or a thin film is coated on a board 1 such as printed circuit board or a ceramic board of alumina or the like. Then an insulation film 4 is interposed to a cross part between the main line 2 and the sub line 3. Moreover, electrodes 5a-5d are formed to both ends of the main line 2 and the sub line 3. That is, in this case, the main line 2 is to be a rectangular track TR1 in which two long straight lines in parallel and two short straight lines in parallel are tied, and the sub line 3 is arranged in the inside of the track surrounded by the main line 2. Thus, the interval between the main line 2 and the sub line 3 is made always constant, and a directional coupler is manufactured while the reproducibility of the coupling is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transformer coupler, and more particularly to a high frequency transformer coupler such as a phase divider or a directional coupler used in radio equipment such as a car telephone and a mobile telephone.

[0002]

2. Description of the Related Art Conventionally, directional couplers suitable for high frequencies as shown in FIGS. 16 (a) and 16 (b) have been proposed.
In FIG. 16A, a main line 2, a sub line 3, and electrodes 5a, 5b, 5c, 5d at both ends of the main line 2 and the sub line 3 are formed on a substrate 1 such as a printed circuit board or a ceramic. 3 shows a coupler formed by This directional coupler utilizes a coupling by a capacitance between a pair of strip lines 2 and 3, and is called a side coupling directional coupler (Japanese Patent Laid-Open No. 6-6118).
Issue).

Further, FIG. 16B shows a directional coupler realized by interposing an insulating film (dielectric film) 4 between strip lines 2 and 3 instead of the above capacitive coupling ( JP-A-5-14019). In each case, the length of the strip line is basically λ / 4 (λ: center wavelength).

[0004]

BRIEF problem to be solved is] In the conventional directional coupler, 75 mm length of the stripline, because it is designed to lambda / 4 as the base, for example with respect to the frequency of 1GH _Z, its length in a free space Therefore, if it is attempted to reduce the size, a coupler having a high degree of coupling cannot be obtained. This is not satisfactory for the use of a mobile phone or the like, which requires miniaturization and low power consumption. In order to increase the coupling degree, in the case of FIG.
This can be achieved by narrowing the interval between them, but there is a physical engineering limit.

Further, in the case of FIG. 16B, although the degree of coupling can be made relatively large, it is necessary to form the strip line 2 on the substrate 1, the insulating film 4 and the strip line 3 thereon. Therefore, it is necessary to delicately control the thickness of the insulating film 4. Therefore, an object of the present invention is to solve the above-mentioned problems, and to provide a transformer coupler which has a large degree of coupling and can be miniaturized.

[0006]

In order to achieve this object, the transformer coupler of the present invention forms a main line on a substrate by a closed track formed by a thick film or a thin film. Inside the closed track, one sub line formed of a thick film or a thin film is provided. The transformer coupler of the present invention has a main line formed on a substrate by a plurality of closed tracks formed by thick film or thin film, and is also formed by a thick film or thin film inside the closed tracks. A plurality of sub lines are formed by providing the sub lines, and the plurality of sub lines are connected in series or in parallel.

In the transformer coupler of the present invention, a main line is formed on a substrate by an open track in which a part of one closed track formed by depositing a thick film or a thin film is cut off, and the open track is formed. A sub-line, which is also formed of a thick film or a thin film, is provided inside the. In the transformer coupler of the present invention, a main line is formed on a substrate by an open track in which a part of each of a plurality of closed tracks deposited by a thick film or a thin film is cut off, and an open track of the open track is formed. Inside each of them, a sub-line formed of a thick film or a thin film is also provided to form a plurality of sub-lines, and the plurality of sub-lines are connected in series or in parallel.

In the transformer coupler of the present invention, a main line is formed on a substrate by a closed track formed by depositing a thick film or a thin film, and a thick film or a thin film is formed inside the closed track. The sub-line formed in 1 is provided, and the midpoint of the sub-line is connected to the ground. The transformer coupler of the present invention has a main line formed on a substrate by a plurality of closed tracks formed by thick film or thin film, and is also formed by a thick film or thin film inside the closed tracks. A plurality of sub-lines are formed by connecting the sub-lines to each other, the sub-lines are connected in series or in parallel, and the midpoints of the sub-lines connected in series or in parallel are connected to the ground. It is a thing.

[0009]

According to the transformer coupler of the present invention, one or more closed or open main lines coated with a thick film or a thin film are formed on a substrate, and a closed or open track is formed. In order to provide one or more sub-lines that are also made of thick film or thin film inside, the main line and the sub-line are relative to each other compared to the case where a pair of strip lines are formed in parallel. Since the length to be substantially becomes an integer multiple of 2 or more according to the number of sub lines, the value of the capacitive coupling between the main line and the sub lines becomes an integer multiple of 2 or more according to the number of sub lines. Therefore, the degree of coupling of the transformer coupler is increased and the size is reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the high frequency transformer coupler of the present invention will be described below with reference to the drawings. Embodiment 1 In FIG. 1, a high frequency transformer coupler of the present invention comprises a main line 2 formed by a closed track TR ₁ on a substrate 1 such as a printed circuit board or a ceramic substrate such as alumina. One sub line 3 provided inside the closed track TR ₁ and also formed of a thick film or a thin film
And are deposited. An insulating film 4 is interposed at the intersection of the main line 2 and the sub line 3. Electrodes 5a, 5b, 5c and 5d are formed on both ends of the main line 2 and the sub line 3.

In its manufacture, first, the thickness of 0.
Copper having a thickness of about 5 μm is deposited on the 635 mm substrate 1 by sputtering and plating, and the main line 2, the sub line 3 and the electrodes 5a, 5b, 5c and 5d are simultaneously patterned by etching. The main line 2 is formed on a rectangular track TR ₁ that connects two parallel long straight lines and two parallel short straight lines, and a sub line 3 is arranged inside the track surrounded by the main line 2. By this technique, the distance between the main line 2 and the sub line 3 can be always made constant, the reproducibility of the degree of coupling can be improved, and the directional coupler can be manufactured. Next, an insulating film 4 of silicon or the like such as silicon dioxide is formed to a thickness of 2 μm, and a line 6 which is a lead portion from the sub line 3 to the electrode portions 5c and 5d is formed.
Is etched, leaving a portion overlapping with the main line 2. Finally, about 5 copper is also deposited by sputtering and plating.
A film having a thickness of μm is formed, and the line 6 that connects the sub line 3 and the electrode portions 5c and 5d is patterned. Note that, for simplification, it is possible to connect the sub line 3 to the electrode portions 5c and 5d by wire bonding instead of the line 6.

The width of the main line 2 thus obtained is 0.05 mm, and the width and length of the sub line 3 are 0.10 mm and 1.45 mm. In addition, the external dimensions of the product are the same as the dimensions of the small chip component 2.0 mm (length) x 1.25 m
It is m (width) × 1.0 mm (thickness), which is sufficiently small as compared with the conventional directional couplers of the same kind. FIG. 15 shows the frequency-coupling degree relationship of the directional coupler completed in this embodiment. Here, the degree of coupling is 10 log (P) if the traveling wave powers of the main line 2 and the sub line 3 are Pi and Po, respectively.
o / Pi). In the figure, In is insertion loss and P _F
Is the coupling degree of the directional coupler according to the present invention, and P _J is the coupling degree of the conventional side-coupling directional coupler in which the line width and the line spacing are the same as those of this embodiment for reference. As is clear from FIG. 15, the frequency used in the mobile phone, for example, 0.9
At GH _Z , the directional coupler of the present invention exhibits a strong coupling degree of about 7 dB or more. This is because the sub line is provided inside the track of the main line, so that the length in which the main line and the sub line face each other is substantially doubled as compared with the case where a pair of strip lines are formed in parallel. Therefore, it is considered that the value of the capacitive coupling between the main line and the sub line is doubled, and the coupling degree of the high frequency transformer coupler is increased. This means that in the directional coupler of the present invention, the degree of coupling can be increased with respect to the same geometrical dimension, and if the same degree of coupling is to be obtained, there is a physical processing limit, but further miniaturization is required. It is possible. This is consistent with the demand for a small directional coupler with a high degree of coupling as power consumption of mobile phones is reduced, and the effect of the present invention can be said to be remarkable. Needless to say, a directional coupler having a desired degree of coupling can be obtained by appropriately selecting the line width, line length, and line spacing. Further, when a relatively weak degree of coupling is required, the main line and the sub line may be formed by a thick film printing technique. A larger degree of coupling can be obtained by increasing the film thickness of the main line and the sub line.

In this embodiment, if the electrode 5a is a high frequency signal input and the electrode 5b is a high frequency signal output, the electrode 5a
c, a phase difference traveling wave is obtained from the electrode 5d, and the electrode 5b
Is a high-frequency signal input and the electrode 5a is a high-frequency signal output, an anti-phase traveling wave output is obtained from the electrodes 5c and 5d,
It can be used as a directional coupler or a phase splitter. Embodiment 2 In FIG. 2, the high frequency transformer coupler is a part of one closed track of a long quadrangle, which is formed of a thick film or a thin film and connects two parallel long straight paths and two parallel short short paths. 2a to form a main line 2 by the track TR ₂ open that lacking the the inside of the track TR ₂ open is also one in which a single sub-line 3 formed by a thick film or a thin film. Main line 2,
Electrodes 5a, 5b, 5c and 5d are formed on both ends of the sub line 3.

This manufacturing process is exactly the same as that of the first embodiment. That is, after the copper film is formed on the substrate 1, the main line 2 and the sub line 3
Is patterned, and an insulating film 4 made of silicon such as silicon dioxide is deposited and patterned. Finally, a sub-line 3 and a line 6 for connection to the electrode portions 5c and 5d are formed.
Pattern. In this embodiment, to form the main line 2 by the track TR ₂ open that lacking a portion 2a of one closed track, the inside of the track TR ₂ open, are also formed by a thick film or thin film By providing only one sub line 3, for example, a high frequency signal is input to the electrode 5a,
If the electrode 5b outputs a high frequency signal, the electrodes 5c and 5
A phase difference traveling wave output is obtained from d and can be used as a directional coupler or a phase divider.

Embodiment 3 Referring to FIG. 3, a high frequency transformer coupler is a rectangular one having a glass epoxy substrate 1 formed by a thick film or a thin film and connecting two parallel long straight paths and two parallel short straight paths. A main line 2 formed by a closed track TR ₃ of a book is formed, and a sub line 3 also formed of a thick film or a thin film is arranged inside the track surrounded by the closed main line 2. The middle point 8 of the sub line 3 can be connected to the ground through the electrode 5e. The high frequency signal input from the electrode 5a is divided into the same level and is output to the electrodes 5c and 5d with their phases inverted.

In the phase splitter thus obtained, the width of the main line 2 and the sub line 3 is 2.0 mm, and the width of the sub line 3 is 2.0 mm.
Is 10 mm and the distance between the main line 2 and the sub line 3 is 0.
It is 5 mm. The phase divider in which the midpoint 8 of this directional coupler is connected to the ground exhibits ideal characteristics as a phase divider. This is based on the fact that a strong degree of coupling is obtained with the directional coupler of the present invention.

In this embodiment, the sub line 3 is arranged inside the track surrounded by the main line 2 and the midpoint 8 of the sub line 3 is connected to the ground through the electrode 5e. If the electrodes 5b are used as high frequency signal outputs, phase difference traveling wave outputs can be obtained from the electrodes 5c and 5d, and they can be used as a directional coupler or a phase divider.

Embodiment 4 In FIG. 4, a high frequency transformer coupler has a rectangular epoxy track portion 2a in which a main line 2 is connected to a parallel two long straight path and a parallel two short straight path to a glass epoxy substrate 1. Is formed on one open track TR ₄ lacking, and one sub line 3 is provided inside the track surrounded by the open main line 2.
Is arranged so that the midpoint 8 of the sub line 3 can be connected to the ground through the electrode 5e. The high-frequency signal input from the electrode 5a is divided into the same level and is divided into two parts.
Phases of c and 5d are inverted and output.

In the phase divider thus obtained, the width of the main line 2 and the sub line 3 is 2.0 mm, and the width of the sub line 3 is 2.0 mm.
Is 10 mm and the distance between the main line 2 and the sub line 3 is 0.
It is 5 mm. The phase divider in which the midpoint 8 of this directional coupler is connected to the ground exhibits ideal characteristics as a phase divider. This is based on the fact that a strong degree of coupling is obtained with the directional coupler of the present invention.

In this embodiment, the main line 2 is divided into two parallel lines.
A rectangular track formed by connecting two short straight paths parallel to the long straight path is formed into an open track TR ₄ in which a part 2a is cut away, and a sub line 3 is arranged inside the track surrounded by the main line 2. Then, by connecting the middle point 8 of the sub line 3 to the ground through the electrode 5e, for example, if the electrode 5a is a high frequency signal input and the electrode 5b is a high frequency signal output, the electrode 5
c, the phase difference traveling wave output is obtained from the electrode 5d, and can be used as a directional coupler or a phase divider.

Embodiment 5 In FIG. 5, a high frequency transformer coupler has two closed rectangular tracks TR ₅₁ and TR ₅₂ which connect a main line 2 to a parallel 3 long straight line and a parallel 2 short straight line. And two tracks TR ₅₁ , which are surrounded by the closed main line 2,
One sub line 3 is provided inside each TR ₅₂ , and the opposite ends of the two sub lines 3 and 3 are connected to the electrode 5c,
5f or 5d, 5g (or 5c, 5g or 5
It is formed so that it can be connected to the ground through d, 5f). In this case, unlike the third and fourth embodiments, since the lines whose phases are inverted are provided respectively, the substantial electrical length is increased, and it is possible to use on a lower frequency side. The center frequency is halved in comparison. In the high frequency transformer coupler of this embodiment, the input signal is equally divided into two.

The manufacturing process of this high frequency transformer coupler is as follows.
This is exactly the same as in Example 1. That is, after forming a copper film on the glass epoxy substrate 1, the main line 2 and the two sub lines 3 are patterned, an insulating film 4 such as silicon dioxide such as silicon dioxide is deposited and patterned, and finally 2 The sub-line 3 of the book and the line 6 connected to the electrode portions 5c and 5d, 5f and 5g are formed and patterned. In this phase divider, the width of the main line 2 and the sub line 3 is 2.0 mm, the length of the sub line 3 is 10 mm, and the distance between the lines is 0.5 mm.

Further, in the high frequency transformer coupler of this embodiment, the two sub lines 3 and 3 are provided, so that the coupling degree becomes stronger than that of the first embodiment, and it can be suitably used as a directional coupler. . In this embodiment, a dual gate combiner is constructed and closed tracks TR ₅₁ , TR _52.
By providing the two sub-lines 3-3 formed inside, the electrode 5a has a phase difference from the electrodes 5c-5d and 5f-5g when the electrode 5a is a high-frequency signal input and the electrode 5b is a high-frequency signal output. , Or a phase difference traveling wave output of opposite phase is obtained and can be used as a directional coupler or a phase divider.

Embodiment 6 In FIG. 6, a high frequency transformer coupler has two closed rectangular tracks TR ₆₁ and TR ₆₂ which connect a main line 2 to a parallel 3 long straight path and a parallel 2 short straight path. The two tracks TR ₆₁ , which are surrounded by the closed main line 2,
One sub line 3 is provided inside each TR ₆₂ , and two sub lines 3 and 3 are connected in parallel by a line 6 so that they can be connected to the ground through the electrode 5c or 5d at one end. is there. In this case, unlike the third and fourth embodiments, since the lines whose phases are inverted are provided respectively, the substantial electrical length is increased, and it is possible to use on a lower frequency side. Center frequency is 1 by comparison
/ 2. In the high frequency transformer coupler of this embodiment, the input signal is equally divided into two.

The manufacturing process of this high frequency transformer coupler is as follows.
This is exactly the same as in Example 1. That is, after forming a copper film on the glass epoxy substrate 1, the main line 2 and the two sub lines 3 are patterned, an insulating film 4 such as silicon dioxide such as silicon dioxide is deposited and patterned, and finally 2 The sub-line 3 of the book and the line 6 connected to the electrode portions 5c and 5d, 5f and 5g are formed and patterned. In this phase divider, the width of the main line 2 and the sub line 3 is 2.0 mm, the length of the sub line 3 is 10 mm, and the distance between the lines is 0.5 mm.

Further, in the high frequency transformer coupler of this embodiment, since the two sub lines 3 and 3 are provided, the degree of coupling becomes stronger than that of the first embodiment, and it can be suitably used as a directional coupler. . In this embodiment, two sub lines 3-3 formed inside the closed tracks TR ₆₁ and TR ₆₂ are used.
By providing the electrode 5a, for example, a high frequency signal is input,
If the electrode 5b outputs a high frequency signal, the electrodes 5c-5d,
A phase difference traveling wave output having a phase difference or an opposite phase is obtained from 5e-5f and can be used as a directional coupler or a phase divider.

Embodiment 7 In FIG. 7, a high frequency transformer coupler has two long rectangular tracks 2a and 2b which connect a main line 2 to a parallel three long straight path and a parallel two short straight path. was formed in the track TR _71, TR ₇₂ which open two were lacking, provided its open main line two tracks TR ₇₁ surrounded by 2, TR ₇₂ each inside one of the sub-line 3, respectively The opposite ends of the two sub lines 3 and 3 are connected to electrodes 5c, 5f or 5d, 5g (or 5c, 5g or 5d, 5
It is formed so that it can be connected to the ground through f). In this case, unlike the third and fourth embodiments, since the lines whose phases are inverted are provided respectively, the substantial electrical length is increased, and it is possible to use on a lower frequency side. The center frequency is halved in comparison. In the high frequency transformer coupler of this embodiment, the input signal is equally divided into two.

The manufacturing process of this high frequency transformer coupler is as follows.
This is exactly the same as in Example 1. That is, after forming a copper film on the glass epoxy substrate 1, the main line 2 and the two sub lines 3 are patterned, an insulating film 4 such as silicon dioxide such as silicon dioxide is deposited and patterned, and finally 2 The sub-line 3 of the book and the line 6 connected to the electrode portions 5c and 5d, 5f and 5g are formed and patterned. In this phase divider, the width of the main line 2 and the sub line 3 is 2.0 mm, the length of the sub line 3 is 10 mm, and the distance between the lines is 0.5 mm.

Further, in the high frequency transformer coupler of this embodiment, the two sub lines 3 and 3 are provided, so that the coupling degree becomes stronger than that of the first embodiment, and it can be suitably used as a directional coupler. . In this embodiment, two sub lines 3-3 formed inside the open tracks TR ₇₁ and TR ₇₂ are used.
By providing the dual-gate type coupler, for example, if the electrode 5a is a high frequency signal input and the electrode 5b is a high frequency signal output, there is a phase difference from the electrodes 5c-5d, 5f-5g, or a reverse phase. The phase difference traveling wave output of is obtained and can be used as a directional coupler or a phase divider.
In this dual gate type coupler, for example, the electrode 5
When a is a high frequency signal input and electrode 5b is a high frequency signal output, for example, a phase difference traveling wave output is obtained from electrodes 5c-5d and a reflected wave output is obtained from electrodes 5f-5g.

Embodiment 8 In FIG. 8, a high frequency transformer coupler has a substrate 1 and a portion 2 of two closed tracks formed by a thick film or a thin film.
2 open tracks TR8 ₁ and TR without a and b
_The main lines 2 and 2 are formed by ₈₂ , and the opened main line 2 and
One sub-line 3 is provided inside each of the two tracks TR ₈₁ and TR ₈₂ surrounded by 2, and the two sub-lines 3 and 3 are connected in parallel by a line 6 to connect one end electrode 5c.
Alternatively, it is formed so as to be connected to the ground through 5d.

In this embodiment, two open tracks T are obtained by omitting parts 2a and 2b of the two closed tracks.
By using R ₈₁ and TR ₈₂ , for example, if the electrode 5a is a high frequency signal input and the electrode 5b is a high frequency signal output, the electrodes 5c, 5
A phase difference traveling wave output is obtained from d and can be used as a directional coupler or a phase divider. Embodiment 9 In FIG. 9, a high frequency transformer coupler has two closed tracks TR ₉₁ , which are deposited on a substrate 1 as a thick film or a thin film.
Main track 2, 2 is formed by TR ₉₂ and closed track T
Inside the R ₉₁ and TR ₉₂ , a sub line 3 also formed of a thick film or a thin film is provided to form two sub lines 3 and 3, and a middle point 8a of the two sub lines 3 and 3 is formed. 8b is connected to the ground through electrodes 5e and 5h.

In this embodiment, a dual gate type coupler is constructed, and the midpoints 8a and 8b of the two sub lines 3 and 3 formed inside the closed tracks TR ₉₁ and TR ₉₂ are connected to the electrode 5e. By connecting the electrode 5a to a ground through 5h, for example, if the electrode 5a is a high frequency signal input and the electrode 5b is a high frequency signal output, the electrodes 5c-5e, 5d-5e, 5
A traveling wave output having a phase difference or a reverse phase can be obtained from f-5h and 5g-5h and can be used as a directional coupler or a phase divider.

Embodiment 10 In FIG. 10, a high frequency transformer coupler is provided on a substrate 1.
Two closed track TRs with thick or thin film
_101, the TR ₁₀₂ to form the main lines 2 and 2, the closed to the inner track TR _101, TR _102, similarly thick or the sub-line 3 formed by a thin film provided two sub-line 3, 3 are connected in parallel by a line 6, and two sub lines 3 and 3 have a midpoint 8
The electrodes a and 8b are connected to the ground through the electrode 5e.

In this embodiment, a dual gate type coupler is constructed, and midpoints 8a and 8b of two sub lines 3 and 3 formed inside closed tracks TR ₁₀₁ and TR ₁₀₂ are formed.
By connecting the electrode 5e to the ground through the electrode 5e, for example, if the electrode 5a is a high frequency signal input and the electrode 5b is a high frequency signal output, a traveling wave output having a phase difference from the electrodes 5c-5e and 5d-5e And can be used as a directional coupler or a phase splitter.

Embodiment 11 In FIG. 11, a high frequency transformer coupler is provided on a substrate 1.
4 closed tracks TR with thick or thin film
₁₁₁ , TR ₁₁₂ , TR ₁₁₃ , and TR _{114 are} used for the main lines 2, 2,
2, 2 and their closed tracks TR ₁₁₁ , T
_{R 112, TR 113, TR 1} 14 inside of, the four sub-line 3, 3 also provided a sub-line 3 formed by a thick film or thin film,
3 and 3 are formed, and the four sub lines 3-3 and 3-3 are connected to the line 7
They are connected in series by a and 7b.

In this embodiment, a dual gate combiner is constructed and closed tracks TR ₁₁₁ , TR ₁₁₂ ,
4 sub lines 3 formed inside TR ₁₁₃ and TR ₁₁₄
By connecting 3, 3-3 in series, for example, the electrode 5
If a is a high-frequency signal input and electrode 5b is a high-frequency signal output, a traveling wave output having a phase difference or a reverse phase can be obtained from electrodes 5c-5d, 5f-5g, and as a directional coupler or a phase divider. Can be used.

Embodiment 12 In FIG. 12, a high frequency transformer coupler is provided on the substrate 1.
4 closed tracks TR with thick or thin film
₁₂₁ , TR ₁₂₂ , TR ₁₂₃ , and TR _{124 for} main lines 2, 2,
2, 2 and their closed tracks TR ₁₂₁ , T
R _122, TR _123, TR ₁ inside the _24, four sub-line and also provided a sub-line 3 formed by a thick film or thin 3,3,
3 and 3 are formed, and the four sub lines 3-3 and 3-3 are connected to the line 6
Are connected in parallel by.

In this embodiment, a dual gate type combiner is constructed and closed tracks TR ₁₂₁ , TR ₁₂₂ ,
4 sub lines 3 formed inside TR ₁₂₃ and TR ₁₂₄
By connecting 3, 3-3 in parallel, for example, the electrode 5
If a is a high-frequency signal input and electrode 5b is a high-frequency signal output, a traveling wave output having a phase difference or a reverse phase can be obtained from electrodes 5c-5d, 5f-5g, and as a directional coupler or a phase divider. Can be used.

Embodiment 13 In FIG. 13, a high frequency transformer coupler is provided on the substrate 1.
An open T with a portion of each of the four closed tracks 2a, 2b, 2c, 2d deposited in thick or thin film removed
Main line 2 by R ₁₃₁ , TR ₁₃₂ , TR ₁₃₃ , and TR ₁₃₄
2, 2, 2, forming open tracks TR ₁₃₁ , T
Inside the R ₁₃₂ , TR ₁₃₃ , and TR ₁₃₄ , the sub line 3 also formed of a thick film or a thin film is provided, and four sub lines 3, 3,
3 and 3 are formed, and the four sub lines 3-3 and 3-3 are connected to the line 7
They are connected in series by a and 7b.

In this embodiment, a dual-gate type combiner is constructed and closed tracks TR ₁₃₁ , TR ₁₃₂ ,
4 sub lines 3 formed inside TR ₁₃₃ and TR ₁₃₄
By connecting 3, 3-3 in series, for example, the electrode 5
If a is a high frequency signal input and electrode 5b is a high frequency signal output, phase difference traveling wave outputs can be obtained from electrodes 5c-5d and 5f-5g and can be used as a directional coupler or a phase divider.

Embodiment 14 In FIG. 14, a high frequency transformer coupler is provided on the substrate 1.
An open T with a portion of each of the four closed tracks 2a, 2b, 2c, 2d deposited in thick or thin film removed
The main line 2 by R ₁₄₁ , TR ₁₄₂ , TR ₁₄₃ , and TR ₁₄₄ ,
2, 2, 2, forming open tracks TR ₁₄₁ , T
Inside the R ₁₄₂ , TR ₁₄₃ , and TR ₁₄₄ , a sub line 3 also formed of a thick film or a thin film is provided, and four sub lines 3 and 3,
3 and 3 are formed, and four sub lines 3-3 and 3-3 are connected in parallel.

In this embodiment, a dual gate type combiner is constructed and closed tracks TR ₁₄₁ , TR ₁₄₂ ,
4 sub lines 3 formed inside TR ₁₄₃ and TR ₁₄₄
By connecting 3 and 3-3 in parallel to the lines 6 and 6, for example, if the electrode 5a is a high frequency signal input and the electrode 5b is a high frequency signal output, the phase difference traveling wave output from the electrodes 5c-5d and 5f-5g. It is obtained and can be used as a directional coupler or a phase splitter.

Although the directional coupler and the phase divider have been described in the above embodiments, the present invention relates to a power combiner, a power divider, a high coupling matching device, a low-pass filter,
It is equally applicable to bandpass filters, high-pass filters, high-coupling couplers, power combiners for power modules, power distributors, double or single mixers, doublers, power combiners, and other transformer combiners.

As described above, according to the transformer coupler of the present invention, a strong degree of coupling can be obtained, and downsizing and power saving can be achieved. Therefore, transmission power is mainly controlled in a radio device such as a car phone and a mobile phone. Therefore, it is used as a directional coupler or a phase divider that detects a part of this.

[0045]

As is apparent from the above description, according to the present invention, a small high frequency transformer coupler having a high degree of coupling can be easily obtained by providing the sub line inside the main line. This is useful for wireless devices such as mobile phones, which are required to be more compact and save power.

Further, these high frequency transformer couplers are
It can be used as a phase divider for distributing and combining high frequency power. That is, it functions as a combination of a high frequency power amplifier and a phase transformer of a frequency mixing balance modulator.

[Brief description of drawings]

FIG. 1 is a pattern diagram of a high frequency transformer coupler according to a first embodiment of the present invention.

FIG. 2 is a pattern diagram of a high frequency transformer coupler according to a second embodiment of the present invention.

FIG. 3 is a pattern diagram of a high frequency transformer coupler according to a third embodiment of the present invention.

FIG. 4 is a pattern diagram of a high frequency transformer coupler according to a fourth embodiment of the present invention.

FIG. 5 is a pattern diagram of a high frequency transformer coupler according to a fifth embodiment of the present invention.

FIG. 6 is a pattern diagram of a high frequency transformer coupler according to a sixth embodiment of the present invention.

FIG. 7 is a pattern diagram of a high frequency transformer coupler according to a seventh embodiment of the present invention.

FIG. 8 is a pattern diagram of a high frequency transformer coupler according to an eighth embodiment of the present invention.

FIG. 9 is a pattern diagram of a high frequency transformer coupler according to a ninth embodiment of the present invention.

FIG. 10 is a pattern diagram of a high frequency transformer coupler according to a tenth embodiment of the present invention.

FIG. 11 is a pattern diagram of a high frequency transformer coupler of Example 11 according to the present invention.

FIG. 12 is a pattern diagram of a high frequency transformer coupler according to a twelfth embodiment of the present invention.

FIG. 13 is a pattern diagram of a high frequency transformer coupler according to a thirteenth embodiment of the present invention.

FIG. 14 is a pattern diagram of a high frequency transformer coupler according to a fourteenth embodiment of the present invention.

FIG. 15 is a graph showing the frequency characteristics of the coupling degree of the directional coupler manufactured according to the first embodiment of the present invention in comparison with the conventional directional coupler.

16 (a) and 16 (b) are pattern diagrams showing a conventional directional coupler.

[Explanation of symbols]

1 ... Substrate 2 ... Main line 3 ... Sub line 4 ... Insulating film 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h ...
Electrodes 8, 8a, 8b ... Midpoint of sub-line TR _{1 to} TR ₁₄₄ ... Track

Front page continuation (72) Inventor Kiyoshi Kurosawa 6972 Shimoyoshida, Yoshida-cho, Chichibu, Saitama Prefecture, within Taisei Co., Ltd. (72) Hiromi Sakamoto, 6972 Shimoyoshida, Yoshida-cho, Chichibu, Saitama Prefecture

Claims (6)

[Claims] 1. A main line is formed on a substrate by a closed track formed by depositing a thick film or a thin film, and the inside of the closed track is also formed by a thick film or a thin film. A transformer coupler provided with a sub-line of a book. 2. A main line is formed on a substrate by a plurality of closed tracks formed by depositing a thick film or a thin film, and a sub-line formed by a thick film or a thin film is formed inside the closed tracks. A transformer coupler, wherein a line is provided to form a plurality of sub-lines, and the plurality of sub-lines are connected in series or in parallel. 3. A main line is formed on a substrate by an open track formed by removing a part of one closed track formed of a thick film or a thin film, and the main track is formed inside the open track. A transformer coupler comprising a single sub line formed of a thick film or a thin film. 4. A main line is formed on a substrate by an open track in which a part of each of a plurality of closed tracks formed by a thick film or a thin film is cut off, and each of the open tracks is formed. A transformer coupler characterized in that a plurality of sub-lines are formed by providing sub-lines also formed of a thick film or a thin film inside, and the plurality of sub-lines are connected in series or in parallel. 5. A main line is formed on a substrate by a closed track formed by depositing a thick film or a thin film, and the main line is also formed by a thick film or a thin film inside the closed track. A transformer coupler, wherein two sub-lines are provided, and a middle point of the one sub-line is connected to the ground. 6. A main line is formed on a substrate by a plurality of closed tracks formed by depositing a thick film or a thin film, and a sub-line formed by a thick film or a thin film is formed inside the closed tracks. A line is provided to form a plurality of sub-lines, the plurality of sub-lines are connected in series or in parallel, and the midpoint of the plurality of sub-lines connected in series or in parallel is connected to the ground. A transformer coupler characterized in that.