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WO2018173866A1 - Dispositif d'étalonnage, dispositif de communication sans fil, système, procédé, et support lisible par ordinateur non transitoire - Google Patents

Dispositif d'étalonnage, dispositif de communication sans fil, système, procédé, et support lisible par ordinateur non transitoire Download PDF

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Publication number
WO2018173866A1
WO2018173866A1 PCT/JP2018/009835 JP2018009835W WO2018173866A1 WO 2018173866 A1 WO2018173866 A1 WO 2018173866A1 JP 2018009835 W JP2018009835 W JP 2018009835W WO 2018173866 A1 WO2018173866 A1 WO 2018173866A1
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WIPO (PCT)
Prior art keywords
transmission
unit
calibration
level
calibration signal
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PCT/JP2018/009835
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English (en)
Japanese (ja)
Inventor
石野　徹
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日本電気株式会社
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Publication of WO2018173866A1 publication Critical patent/WO2018173866A1/fr

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  • the present invention relates to a calibration device, a wireless communication device, a system, a method, and a program, and in particular, it is possible to easily calibrate a wireless communication device having a plurality of transmission / reception units connected to each element of an array antenna.
  • the present invention relates to a calibration device, a wireless communication device, a system, a method, and a program.
  • a transmission / reception unit is connected to each element of the array antenna.
  • the input / output characteristics of each transmitting / receiving unit are measured using a calibration signal, and each transmitting / receiving unit is calibrated based on the measurement result.
  • the calibration signal is connected to a calibration device from a calibration input / output unit provided in each transmission / reception unit. Since the calibration signal is a radio signal, it is necessary to perform calibration with the length of the connected wiring constant. However, since each transmitting / receiving unit is arranged at a different position, it is difficult to make the length between each transmitting / receiving unit and the calibration device constant. Therefore, the wireless characteristics of the calibration signal from the calibration input / output unit to the calibration device of each transmitting / receiving unit are separately measured, and the calibration is performed in consideration of the measurement result. For this reason, there was a problem that it was difficult to calibrate easily.
  • Patent Document 1 discloses a method of calibrating at least one of an amplitude difference and a phase difference without performing a replacement work of a cable (wireless signal wiring).
  • the calibration signal path is switched by a switch when calibration is performed, the switching work is generated, and it has been desired to perform calibration more easily.
  • the present invention has been made to solve such problems, and a calibration device capable of easily calibrating a wireless communication device having a plurality of transmission / reception units connected to each element of an array antenna, and a wireless communication device It is an object of the present invention to provide a communication apparatus, system, method, and program.
  • the calibration apparatus is A calibration device that calibrates a wireless communication device including a first transmission unit and a second transmission unit that transmit a transmission signal, and a first reception unit and a second reception unit that receive a reception signal, The level of the first calibration signal input to the first transmission unit and output from the second reception unit and the level of the second calibration signal input to the second transmission unit and output from the second reception unit are measured.
  • a wireless communication apparatus A first transmitter and a second transmitter for transmitting a transmission signal; A first receiver and a second receiver for receiving a received signal; A first wiring; A first coupler connecting the output of the first transmitter and one end of the first wiring; A second coupler connecting the other end of the first wiring and the input of the second receiving unit; With The second coupler connects the output of the second transmitter and the input of the second receiver.
  • the system according to the present invention comprises: A wireless communication device including a first transmission unit and a second transmission unit for transmitting a transmission signal, a first reception unit and a second reception unit for receiving a reception signal, and a calibration device for calibrating the wireless communication device;
  • a system comprising: The wireless communication device A first wiring; A first coupler connecting the output of the first transmitter and one end of the first wiring; A second coupler for connecting the other end of the first wiring and the input of the second receiver,
  • the calibration device is The level of the first calibration signal input to the first transmission unit and output from the second reception unit and the level of the second calibration signal input to the second transmission unit and output from the second reception unit are measured.
  • a measuring section A control unit that controls a gain of the second transmission unit such that a difference between the level of the first calibration signal and the level of the second calibration signal is equal to or less than a first predetermined value.
  • the method according to the present invention comprises: A method for calibrating a wireless communication apparatus comprising a first transmitter and a second transmitter for transmitting a transmission signal, and a first receiver and a second receiver for receiving a received signal, The level of the first calibration signal input to the first transmission unit and output from the second reception unit and the level of the second calibration signal input to the second transmission unit and output from the second reception unit are measured. Steps, Controlling the gain of the second transmitter so that the difference between the level of the first calibration signal and the level of the second calibration signal is not more than a first predetermined value; Is provided.
  • the program according to the present invention is: A method for calibrating a wireless communication apparatus comprising a first transmitter and a second transmitter for transmitting a transmission signal, and a first receiver and a second receiver for receiving a received signal, The level of the first calibration signal input to the first transmission unit and output from the second reception unit and the level of the second calibration signal input to the second transmission unit and output from the second reception unit are measured. Steps, Controlling the gain of the second transmitter so that the difference between the level of the first calibration signal and the level of the second calibration signal is not more than a first predetermined value; Is executed on the computer.
  • a calibration device capable of easily calibrating a wireless communication device having a plurality of transmission / reception units connected to each element of an array antenna. it can.
  • 1 is a block diagram illustrating a calibration device and a wireless communication device according to a first embodiment. It is a typical perspective view which illustrates an array antenna.
  • 1 is a block diagram illustrating a wireless communication device according to a first embodiment. It is a block diagram which illustrates the connection at the time of measuring the characteristic between other transmission / reception departments.
  • 1 is a block diagram illustrating a calibration device and a wireless communication device according to a first embodiment. It is a block diagram which illustrates the calibration apparatus and radio
  • FIG. 1 is a block diagram illustrating a calibration device and a wireless communication device according to the first embodiment.
  • FIG. 1 shows an example in which there are four transmission / reception units.
  • the transmission / reception unit may be referred to as a block.
  • FIG. 2 is a schematic perspective view illustrating an array antenna.
  • FIG. 2 shows an example in which there are 36 array antenna elements.
  • the array antenna element may be referred to as an array antenna.
  • the system 1 includes a wireless communication device 50 and a calibration device 10.
  • the calibration device 10 is a calibration device that calibrates the wireless communication device 50.
  • the wireless communication device 50 is a base station such as a mobile phone, for example.
  • the wireless communication device 50 includes a first transmission / reception unit 51 to a fourth transmission / reception unit 54 connected to the array antenna 515 to the array antenna 545 of the array antenna unit 50a.
  • the array antennas 515 to 545 are configured as an array antenna unit 50a as shown in FIG.
  • the first transmission unit 512 to the fourth transmission unit 542 transmit transmission signals via the array antenna 515 to the array antenna 545.
  • First reception unit 518 to fourth reception unit 548 receive received signals via array antenna 515 to array antenna 545.
  • the calibration device 10 includes a measurement unit 11 and a control unit 12.
  • the measurement unit 11 inputs the first transmission unit 512 and measures the level of the first calibration signal S1 output from the second reception unit 528.
  • the measurement unit 11 measures the level of the second calibration signal S2 input to the second transmission unit 522 and output from the second reception unit 528.
  • the control unit 12 controls the gain of the second transmission unit 522 so that the difference between the level of the first calibration signal S1 and the level of the second calibration signal S2 is equal to or less than the first predetermined value L1.
  • first calibration signal S1 may be input to the digital-analog converter 511.
  • second calibration signal S2 may be input to the digital-analog conversion unit 521.
  • the measurement unit 11 may measure the level of the first calibration signal S1 output from the analog-digital conversion unit 519.
  • the wireless communication device 50 includes a first coupler, a second coupler, and a first wiring Cn1.
  • the first coupler connects the output of the first transmission unit 512 and one end of the first wiring Cn1.
  • the second coupler connects the other end of the first wiring Cn1 and the input of the second receiving unit 528.
  • the second coupler connects the output of the second transmitter 522 and the input of the second receiver 528.
  • the coupler 513, the coupler 514, the coupler 516, and the coupler 517 are collectively referred to as a first coupler, and the coupler 523, the coupler 524, the coupler 526, and the coupler 527 are collectively referred to as a second coupler.
  • FIG. 3 is a block diagram illustrating a wireless communication apparatus according to the first embodiment.
  • FIG. 3 for the sake of simplicity, an example of one transmission / reception unit is shown.
  • TX_ transmission characteristics of the transmission units of each block of the first transmission / reception unit 51 to the fourth transmission / reception unit 54
  • RX_ reception characteristics of the reception unit
  • TX_51 transmission characteristic of the transmission unit of the first transmission / reception unit 51
  • RX_51 reception characteristic of the reception unit of the first transmission / reception unit 51
  • the transmission characteristic “TX_ (block name)” may be a characteristic including a digital-analog conversion unit preceding the transmission unit.
  • the reception characteristic “RX_ (block name)” may be a characteristic including an analog-digital conversion unit subsequent to the reception unit.
  • the port p1 and the port p3 of the transmission / reception switch 51c are connected. Then, a normal transmission signal is input from the digital-analog conversion unit 511 and output from the array antenna 515 via the first transmission unit 512, the coupler 514, and the transmission / reception switch 51c.
  • the port p2 and the port p3 of the transmission / reception switch 51c are connected. Then, the normal reception signal input from the array antenna 515 is input to the analog / digital conversion unit 519 via the transmission / reception switch 51 c, the coupler 516, and the first reception unit 518.
  • Embodiment 1 is to relatively match the transmission characteristics and reception characteristics of all the transmission / reception units (blocks). For example, the transmission characteristics of the first transmission unit 512 of the first transmission / reception unit 51 and the transmission characteristics of the second transmission unit 522 of the second transmission / reception unit 52 are combined, and the reception characteristics of the first reception unit 518 of the first transmission / reception unit 51 and the first 2 The reception characteristic of the second receiving unit 528 of the transmitting / receiving unit 52 is matched.
  • the characteristics within the own transmitting / receiving unit and the characteristics between other transmitting / receiving units are measured.
  • measurement of characteristics in the own transmission / reception unit will be described.
  • the first transmission / reception unit 51 When measuring the characteristics of the first transmission / reception unit 51, the calibration signal S is input to the digital / analog conversion unit 511.
  • the calibration signal S flows as follows: digital-analog converter 511 ⁇ first transmitter 512 ⁇ coupler 514 ⁇ coupler 513 ⁇ coupler 517 ⁇ coupler 516 ⁇ first receiver 518 ⁇ analog / digital converter 519.
  • the calibration signal S output from the analog-digital conversion unit 519 is input to the measurement unit 11 of the calibration apparatus 10 illustrated in FIG.
  • the measuring unit 11 measures the level of the calibration signal S.
  • the coupler 513 and the coupler 517 may be referred to as a hybrid coupler.
  • the transmission characteristic “TX_ (block name)” of the transmission unit and the reception characteristic “RX_ (block name)” of the reception unit are referred to as “TX_ (block name) ⁇ RX_ (block name)”.
  • TX_ (block name) ⁇ RX_ (block name) the characteristic in the 1st transmission / reception part 51 is called "TX_51 * RX_51.”
  • Measurement of the characteristics of the second transmission / reception unit 52 of the wireless communication device 50 can also be performed in the same manner as the first transmission / reception unit 51. Specifically, the measurement unit 11 inputs the second transmission unit 522 and measures the level of the second calibration signal S2 output from the second reception unit 528. Thereby, “TX_52 ⁇ RX_52” is obtained as a characteristic of the second transmitting / receiving unit 52.
  • the measurement of the characteristics in the respective transmitting / receiving units of the third transmitting / receiving unit 53 and the fourth transmitting / receiving unit 54 of the wireless communication device 50 can be performed in the same manner as the first transmitting / receiving unit 51. Then, “TX_51 ⁇ RX_51”, “TX_52 ⁇ RX_52”, “TX_53 ⁇ RX_53”, and “TX_54 ⁇ RX_54” are obtained as characteristics in the own transmitting / receiving unit.
  • FIG. 4 is a block diagram illustrating a connection when measuring characteristics between other transmission / reception units.
  • FIG. 4 shows an example in which there are four transmission / reception units.
  • the calibration signal output unit 51b and the calibration signal input unit 52a are connected by the first wiring Cn1. Connecting. In order to measure the characteristics when passing through the second transmitter 522 and the third receiver 538, the calibration signal output unit 52b and the calibration signal input unit 53a are connected by the second wiring Cn2. In order to measure the characteristics when passing through the third transmitter 532 and the fourth receiver 548, the calibration signal output unit 53b and the calibration signal input unit 54a are connected by the third wiring Cn3.
  • the calibration signal output unit 51b of the first transmission / reception unit 51 and the calibration signal input unit 52a of the second transmission / reception unit 52 are connected by the first wiring Cn1.
  • the first calibration signal S1 is input to the digital-analog converter 511.
  • the first calibration signal S1 is a digital / analog conversion unit 511 ⁇ first transmission unit 512 ⁇ coupler 514 ⁇ coupler 513 ⁇ calibration signal output unit 51b ⁇ calibration signal input unit 52a ⁇ coupler 527 ⁇ coupler 526 ⁇ second reception unit. 528 ⁇ Analog / digital conversion unit 529
  • the first calibration signal S1 output from the analog-digital conversion unit 529 is input to the measurement unit 11 of the calibration apparatus 10 illustrated in FIG.
  • the measuring unit 11 measures the level of the first calibration signal S1.
  • the characteristic “TX_52 ⁇ RX_53 can be obtained.
  • the characteristic“ TX_53 ⁇ RX_54 ” is obtained. Can be obtained.
  • FIG. 5 is a block diagram illustrating the calibration device and the wireless communication device according to the first embodiment.
  • the characteristic “TX_52 ⁇ RX_52” and the characteristic “TX_51 ⁇ RX_52” have the same characteristic “RX_52”. Therefore, as shown in FIG. 5, the first calibration signal S1 for measuring the characteristic “TX_51 ⁇ RX_52” and the second calibration signal S2 for measuring the characteristic “TX_52 ⁇ RX_52” are Input to the measurement unit 11. Then, the control unit 12 compares the first calibration signal S1 and the second calibration signal S2, and the difference between the level of the first calibration signal S1 and the level of the second calibration signal S2 is the first predetermined value L1.
  • the gain of the second transmission unit 522 is controlled to be as follows.
  • the transmission characteristic “TX_52” of the second transmission / reception unit 52 can be matched with the transmission characteristic “TX_51” of the first transmission / reception unit 51.
  • the reception characteristic “RX_52” is common, and thus the reception characteristic “RX_52” need not be known.
  • control unit 12 may control the gain of the second transmission unit 522 by changing the operation bias of the second transmission amplifier included in the second transmission unit 522.
  • control unit 12 may control the gain of the second transmission unit 522 by changing the attenuation value of the second transmission attenuator included in the second transmission unit 522.
  • the characteristic “TX_53 ⁇ RX_53” and the characteristic “TX_52 ⁇ RX_53” are common to “RX_53”. Therefore, next, the characteristic “TX_53 ⁇ RX_53” and the characteristic “TX_52 ⁇ RX_53” are compared and the third transmission unit 532 is controlled, so that the transmission characteristic “TX_53” of the third transmission unit 532 is changed to the second transmission.
  • the transmission characteristic “TX_52” of the unit 522 can be matched.
  • the characteristic “TX_54 ⁇ RX_54” and the characteristic “TX_53 ⁇ RX_54” are compared, and the fourth transmission unit 542 is controlled, so that the transmission characteristic “TX_54” of the fourth transmission unit 542 is changed to the third transmission unit 532.
  • the transmission characteristic can be adjusted to “TX_53”.
  • the transmission characteristic “TX_52” of the second transmission unit 522, the transmission characteristic “TX_53” of the third transmission unit 532, and the transmission characteristic “TX_54” of the fourth transmission unit 542 are changed to the transmission characteristic of the first transmission unit 512. It can be adjusted to “TX — 51”.
  • the characteristic “TX_51 ⁇ RX_51” and the characteristic “TX_51 ⁇ RX_52” have the same characteristic “TX_51”. Therefore, as shown in FIG. 5, the first calibration signal S1 for measuring the characteristic “TX_51 ⁇ RX_52” and the third calibration signal S3 for measuring the characteristic “TX_51 ⁇ RX_51” Input to the measurement unit 11. That is, the first calibration signal S1 input to the first transmission unit 512 and output from the second reception unit 528, and the third calibration signal S3 input to the first transmission unit 512 and output from the first reception unit 518 are measured. Input to section 11.
  • control unit 12 compares the first calibration signal S1 and the third calibration signal S3, and the difference between the level of the first calibration signal S1 and the level of the third calibration signal S3 is the second predetermined value L2.
  • the gain of the second receiving unit 528 is controlled so as to be as follows.
  • reception characteristic “RX_52” of the second transmission / reception unit 52 can be matched with the reception characteristic “RX_51” of the first transmission / reception unit 51. Note that, since the transmission characteristic “TX_51” is common during the control, it is not necessary to know the characteristic of the transmission characteristic “TX_51”.
  • control unit 12 may control the gain of the second reception unit 528 by changing the operation bias of the second reception amplifier included in the second reception unit 528.
  • control unit 12 may control the gain of the second reception unit 528 by changing the attenuation value of the second reception attenuator included in the second reception unit 528.
  • the characteristic “TX_52 ⁇ RX_52” and the characteristic “TX_52 ⁇ RX_53” are compared, and the third reception unit 538 is controlled, so that the reception characteristic “RX_53” of the third reception unit 538 is changed to that of the second reception unit 528. It can be matched with the reception characteristic “RX — 52”.
  • the receiving characteristic “RX_54” of the fourth receiving unit 548 is changed to the receiving characteristic of the third receiving unit 538. It can be set to “RX_53”.
  • reception characteristic “RX_52”, the reception characteristic “RX_53”, and the reception characteristic “RX_54” can be matched with the reception characteristic “RX_51”.
  • the first transmission / reception unit 51 is used as a reference, but another transmission / reception unit may be used as a reference.
  • each of the first transmission / reception unit 51, the third transmission / reception unit 53, and the fourth transmission / reception unit 54 may be matched with the second transmission / reception unit 52.
  • Which transmission / reception unit is used as a reference is determined based on the arrangement of the parts constituting the wireless communication device 50, temperature conditions, and the like.
  • the calibration of the characteristics of the array antenna and the wireless communication device 50 including the transmission / reception unit for each antenna is performed using the own transmission / reception unit and the transmission / reception unit adjacent thereto.
  • the calibration device 10 acquires the calibration signal S using the coupler of the wireless communication device 50, there is no need to switch the path of the calibration signal S by a switch or the like.
  • the calibration apparatus 10 can measure the calibration signal S only by turning on / off the calibration signal S.
  • the calibration signal input unit and the calibration signal output unit of each adjacent transmitting / receiving unit are connected. Since the wireless wiring length between the calibration signal input unit and the calibration signal output unit is substantially constant, the measurement error can be reduced.
  • the wiring can be easily performed. Further, since the wirings can be prevented from overlapping, the wiring layout is not difficult and the space can be saved.
  • the number of transmitting / receiving units can be easily increased by connecting the calibration signal input units and the calibration signal output units of the respective transmitting / receiving units with a daisy chain.
  • the degree of freedom is high.
  • the calibration apparatus calibrates a plurality of transmission / reception units in parallel in time. Thereby, the effect of shortening the calibration time when the number of transmission / reception units is increased is great. All the measurements can be completed in two time frames of the measurement in the own transmission / reception unit and the measurement between other transmission / reception units. A greater effect can be obtained as the number of transmission / reception units increases.
  • the present invention is not limited to this.
  • the first embodiment may be applied even when there are other than four transmission / reception units.
  • FIG. 6 is a block diagram illustrating a calibration device and a wireless communication device according to a comparative example.
  • the calibration device 40 inputs the calibration signal S from each of the calibration signal input / output units 81ab to 84ab of the wireless communication device 80, and performs calibration for each of the transmission / reception units 81 to 84.
  • the transmission / reception units 81 to 84 are arranged at different positions. Therefore, in the calibration signal wiring unit 45, it is difficult to make the length of the wiring of the calibration signal S between each of the calibration signal input / output units 81ab to 84ab and the calibration device 40 constant. For this reason, in the comparative example, the wireless signal characteristics of the wiring from the respective calibration signal input / output units 81ab to 84ab to the calibration device 40 are separately measured, and the calibration is performed in consideration of the measurement result.
  • the calibration device 40 measures the characteristics of the transmission / reception units 81 to 84 by switching the transmission / reception units 81 to 84 by the switch 42 after demultiplexing or synthesis by the demultiplexing synthesis unit 41 and changing the measurement time. Then calibrate. For example, the transmitter / receiver 81 is measured and calibrated, and then the transmitter / receiver 82 is measured and calibrated. After the transmitter / receiver 82 is measured and calibrated, the transmitter / receiver 83 is measured and calibrated. Thus, it is difficult to shorten the calibration time in the comparative example.
  • the first transmission / reception unit and the last transmission / reception unit are connected.
  • the calibration signal output unit 54b and the calibration signal input unit 51a shown in FIG. 4 are connected, and the characteristics when passing through the fourth transmission unit 542 and the first reception unit 518 are measured.
  • the characteristics of the second transmission / reception unit 52, the third transmission / reception unit 53, and the fourth transmission / reception unit 54 are already matched with the characteristics of the first transmission / reception unit 51.
  • a spare calibration signal input unit and a spare calibration signal output unit may be provided.
  • the radio communication device 50 can be calibrated using the spare calibration signal input unit and the spare calibration signal output unit.
  • the present invention has been described as a hardware configuration, but the present invention is not limited to this.
  • the present invention can also realize the processing of each component by causing a CPU (Central Processing Unit) to execute a computer program.
  • a CPU Central Processing Unit
  • Non-transitory computer readable media include various types of tangible storage media.
  • Examples of non-transitory computer-readable media include magnetic recording media (eg flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (eg magneto-optical discs), CD-ROMs (Read Only Memory), CD-Rs, CD-R / W, semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable ROM)), flash ROM, RAM (Random Access Memory) are included.
  • the program may also be supplied to the computer by various types of temporary computer-readable media. Examples of transitory computer readable media include electrical signals, optical signals, and electromagnetic waves.
  • the temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.
  • Calibration signal input / output unit Cn1 ... First wiring Cn2 ... Second wiring Cn3 ... Third wiring p1, p2, p3 ... Port L1 ... First predetermined value L2 ... second predetermined value S ... calibration signal S1 ... first calibration signal S2 ... second calibration signal

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Abstract

Le but de la présente invention est de fournir un dispositif d'étalonnage avec lequel un dispositif de communication sans fil ayant une pluralité d'unités d'émission/réception connectées à des éléments respectifs d'une antenne réseau peut être étalonné de manière simple, un dispositif de communication sans fil, un système, un procédé et un programme. Le dispositif d'étalonnage (10) selon la présente invention est un dispositif d'étalonnage (10) pour étalonner un dispositif de communication sans fil (50) pourvu : d'une première unité d'émission (512) et d'une seconde unité d'émission (522) qui émettent des signaux d'émission ; et d'une première unité de réception (518) et d'une seconde unité de réception (528) qui reçoivent des signaux de réception. Le dispositif d'étalonnage est pourvu : d'une unité de mesure (11) qui mesure le niveau d'un premier signal d'étalonnage (S1) entré dans la première unité d'émission (512) et fourni en sortie par la seconde unité de réception (528), et le niveau d'un second signal d'étalonnage (S2) entré dans la seconde unité d'émission (522) et fourni en sortie par la seconde unité de réception (528) ; et d'une unité de commande (12) qui commande le gain de la seconde unité d'émission (522) de sorte que la différence entre le niveau du premier signal d'étalonnage (S1) et le niveau du second signal d'étalonnage (S2) ne devienne pas supérieure à une première valeur prédéfinie (L1).
PCT/JP2018/009835 2017-03-21 2018-03-14 Dispositif d'étalonnage, dispositif de communication sans fil, système, procédé, et support lisible par ordinateur non transitoire WO2018173866A1 (fr)

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JP2017053942 2017-03-21
JP2017-053942 2017-03-21

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000216618A (ja) * 1998-11-19 2000-08-04 Nippon Telegr & Teleph Corp <Ntt> 適応アレ―アンテナ装置
JP2003218758A (ja) * 2002-01-23 2003-07-31 Sony Corp 送受信システム
JP2008124534A (ja) * 2006-11-08 2008-05-29 Nippon Telegr & Teleph Corp <Ntt> 指向性校正回路および指向性校正方法
JP2016195331A (ja) * 2015-03-31 2016-11-17 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． アレーアンテナ送受信装置及び校正値算出方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000216618A (ja) * 1998-11-19 2000-08-04 Nippon Telegr & Teleph Corp <Ntt> 適応アレ―アンテナ装置
JP2003218758A (ja) * 2002-01-23 2003-07-31 Sony Corp 送受信システム
JP2008124534A (ja) * 2006-11-08 2008-05-29 Nippon Telegr & Teleph Corp <Ntt> 指向性校正回路および指向性校正方法
JP2016195331A (ja) * 2015-03-31 2016-11-17 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． アレーアンテナ送受信装置及び校正値算出方法

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