CN101873149B - High-power radio frequency system and radio frequency transmission method - Google Patents
High-power radio frequency system and radio frequency transmission method Download PDFInfo
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- CN101873149B CN101873149B CN2010102113839A CN201010211383A CN101873149B CN 101873149 B CN101873149 B CN 101873149B CN 2010102113839 A CN2010102113839 A CN 2010102113839A CN 201010211383 A CN201010211383 A CN 201010211383A CN 101873149 B CN101873149 B CN 101873149B
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Abstract
The invention relates to a high-power radio frequency system and a radio frequency transmission method. The high-power radio frequency system comprises a radio frequency signal transceiving unit (300), an antenna (600), an antenna switch (500), an antenna switch control unit (400), a central control unit (200) and a data acquisition unit (100); the radio frequency signal transceiving unit (300) is used for transmitting or receiving radio frequency power signals; the antenna (600) is used for transmitting or receiving wireless radio frequency signals; the antenna switch (500) is coupled between the radio frequency signal transceiving unit (300) and the antenna (600); the antenna switch control unit (400) is used for controlling the action of the antenna switch (500); the central control unit (200) is used for respectively controlling the radio frequency signal transceiving unit (300) and the antenna switch control unit (400); and the data acquisition unit (100) is used for respectively acquiring and converting the wireless radio frequency signals outputted by the antenna (600) and the environmental temperature into corresponding electric signals and transmitting the electric signals to the central control unit (200).
Description
Technical field
The present invention relates to a kind of high-power RF system and RF transmission method, relate in particular to a kind of high-power RF system and RF transmission method of working under cryogenic conditions.
Background technology
Now, reliable and stable communication more and more becomes the restriction people at the bottleneck of life and operation under cryogenic conditions, environment such as outlying extremely frigid zones, Along Railway, field work.
Such as, in the Northeast of China or the place such as Far-east Area of Russia, the extremely low temperature of-40 degrees centigrade even appears.At present, in the wireless communication field of GSM the inside, the working temperature of a lot of terminal fitting equipment all is limited in more than-25 degrees centigrade, then work under low temperature conditions will occur abnormal.Particularly at the state that transmits and receives of RF high power, some destabilizing factors more easily occur, such as power is significantly decayed, frequency error and phase error exceed standard etc.
Summary of the invention
Technical problem to be solved by this invention is a kind of high-power RF system and RF transmission method that can reliably working under cryogenic conditions.
To this, at first the present invention provides a kind of high-power RF system, comprising:
The radiofrequency signal Transmit-Receive Unit is used for output or accepts rf power signal;
Antenna is used for emission or receives radio frequency signal;
Duplexer is coupled between described radiofrequency signal Transmit-Receive Unit and antenna;
The duplexer control unit is used for controlling described duplexer action;
Central control unit is used for controlling respectively and radiofrequency signal Transmit-Receive Unit and duplexer control unit; And
Data acquisition unit is used for gathering respectively radio frequency signal and the ambient temperature of described antenna output, and is converted into the corresponding signal of telecommunication and sends described central control unit to.
Accordingly, the present invention also provides a kind of high-power RF launching technique, comprises the steps:
The temperature detection step: the testing environment temperature, and judge that whether this ambient temperature is lower than a default temperature threshold; If lower than,
The power output detecting step: detect the power of radiofrequency signal of antenna output whether less than the performance number of expection, if less than,
Compensation process: adjust the width of the radiofrequency signal of described antenna output, compensate accordingly.
One, except the having relatively high expectations of the ambient temperature of the normal operation of radiofrequency signal Transmit-Receive Unit, parts such as central control unit, data acquisition unit, the temperature range of its work is wider, can adapt to lower temperature.By technique scheme, the supervision according to the radiofrequency signal of ambient temperature and output if there is the output abnormality under low temperature condition, can compensate output accordingly, makes it can satisfy predefined output-index requirement.
In the embodiment that adopts technique scheme, can export the radio signal that meets index under the condition of-40 degrees centigrade.
Preferably, described data acquisition unit comprises:
Temperature detecting module for detection of ambient temperature, and is converted into the corresponding signal of telecommunication;
The detection module is coupled with described antenna, for detection of the radio frequency signal of described antenna output; And
ADC (analog-to-digital conversion) will be converted into digital electric signal by the analog electrical signal of described temperature detecting module and the input of detection module respectively, and send corresponding central control unit to.
Preferably, what described antenna was exported is the gsm wireless signal, and power is greater than 2 watts.
Further, what described antenna was exported is the gsm wireless signal, and power is greater than 8 watts.
Preferably, described data acquisition unit detects radio frequency signal power and the waveform of described antenna output.
Preferably, described temperature threshold is made as-6 degrees centigrade.
Preferably, in described compensation process, rule of thumb data, widen the width of the radiofrequency signal of described antenna output.
Description of drawings
Fig. 1 is the structural representation of high-power RF a kind of embodiment of system of the present invention;
Fig. 2 is the part-structure schematic diagram of the high-power RF another kind of embodiment of system of the present invention;
Fig. 3 is radiofrequency signal output, the input schematic diagram of the high-power RF another kind of embodiment of system of the present invention;
Fig. 4 is compensation principle schematic diagram of the present invention;
Fig. 5 is the flow chart of a kind of embodiment of high-power RF launching technique of the present invention.
Embodiment
Below in conjunction with accompanying drawing, more excellent embodiment of the present invention is described in further detail:
As shown in Figure 1, a kind of high-power RF system, comprising: radiofrequency signal Transmit-Receive Unit 300 is used for output or accepts rf power signal; Antenna 600 is used for emission or receives radio frequency signal; Duplexer 500 is coupled between described radiofrequency signal Transmit-Receive Unit 300 and antenna 600; Duplexer control unit 400 is used for controlling described duplexer 500 actions; Central control unit 200 is used for controlling respectively and radiofrequency signal Transmit-Receive Unit 300 and duplexer control unit 400; And data acquisition unit 100, be used for gathering respectively radio frequency signal and the ambient temperature of described antenna 600 outputs, and be converted into the corresponding signal of telecommunication and send described central control unit 200 to.
Wherein, in order to improve the efficient of transfer of data, data acquisition unit 100 adopts special data-interface to be connected with described central control unit 200, and sending action also triggers interruption.Central control unit 200 adopts DMA (DirectMemoryAccess) mode to carry out automaticdata and reads, and according to the priority level deal with data, and in real time by the output of compensation mechanism control antenna.
As shown in Figure 2, described data acquisition unit 100 comprises: temperature detecting module 110 for detection of ambient temperature, and is converted into the corresponding signal of telecommunication; Detection module 130 is coupled with described antenna 600, for detection of the radio frequency signal of described antenna 600 outputs; And ADC120, will be converted into digital electric signal by the analog electrical signal of described temperature detecting module 110 and 130 inputs of detection module respectively, and send corresponding central control unit 200 to.
As shown in Figure 3, the operational environment under ultralow temperature, the loss of control signal transmission and time-delay are maximum problems.How in the situation that guarantee that the gsm communication agreement is complete, carry out the sequential of control antenna switch 500, extremely important to satisfy low-temperature working.The width that the mode of compensation can be controlled output signal carries out.
In conjunction with Fig. 4, must guarantee the transmitting time integrality of T2 in each frame of GSM, otherwise must cause the relevant series of problems of radio-frequency transmissions.So adjusting conditionally the T1 duration is one of them important means.
It is Δ t that design temperature changes, and experimental results show that control signal can begin to change after variations in temperature is to-6 ℃, so the temperature threshold that we set is-6 ℃.
Under the environment lower than temperature threshold, set the radio signal of the output of antenna, the power of its expectation is P, and the power of actual test is P0, in the time of power detection P0＜P, we must export to compensate so.
The pulsewidth of design output compensates and is T0.T0 adopts by the test data of reality and passes through the empirical value table that weighted average draws, and we obtain actual output at last:
T=T2+T0, (when P0＜P sets up)
We just can realize the control and compensation data that obtain by with reference to monitoring power and reference environment temperature like this.
As shown in Figure 5, a kind of high-power RF launching technique comprises the steps:
The temperature detection step: the testing environment temperature, and judge that whether this ambient temperature is lower than a default temperature threshold; If lower than, power output detecting step: detect the power of radiofrequency signal of antenna output whether less than the performance number of expection, if less than, compensation process: adjusts the width of the radiofrequency signal that described antenna exports, compensate accordingly.
Wherein, described temperature threshold is made as-6 degrees centigrade.
In described compensation process, rule of thumb data, widen the width of the radiofrequency signal of described antenna output.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (3)
1. a high-power RF system that is used for terminal fitting equipment, is characterized in that, comprising:
Radiofrequency signal Transmit-Receive Unit (300) is used for output or received RF power signal;
Antenna (600) is used for emission or receives radio frequency signal;
Duplexer (500) is coupled between described radiofrequency signal Transmit-Receive Unit (300) and antenna (600);
Duplexer control unit (400) is used for controlling described duplexer (500) action;
Central control unit (200) is used for controlling respectively radiofrequency signal Transmit-Receive Unit (300) and duplexer control unit (400); And
Data acquisition unit (100) is used for gathering respectively radio frequency signal and the ambient temperature of described antenna (600) output, and is converted into the corresponding signal of telecommunication and sends described central control unit (200) to;
Described data acquisition unit (100) comprising:
Temperature detecting module (110) for detection of ambient temperature, and is converted into the corresponding signal of telecommunication;
Detection module (130) is coupled with described antenna (600), for detection of the radio frequency signal of described antenna (600) output; And
ADC(120), will be converted into digital electric signal by the analog electrical signal of described temperature detecting module (110) and detection module (130) input respectively, and send corresponding central control unit (200) to;
What described antenna (600) was exported is the gsm wireless signal, and power is greater than 8 watts;
When this ambient temperature during lower than a default temperature threshold, detect the power of radiofrequency signal of antenna output whether less than the performance number of expection, if less than, adjusts the width of the radiofrequency signal that described antenna exports, compensate accordingly;
Described temperature threshold is made as-6 degrees centigrade.
2. high-power RF as claimed in claim 1 system, is characterized in that, described data acquisition unit (100) detects radio frequency signal power and the waveform of described antenna (600) output.
3. a high-power RF launching technique that is used for terminal fitting equipment, is characterized in that, comprises the steps:
The temperature detection step: the testing environment temperature, and judge that whether this ambient temperature is lower than a default temperature threshold; If lower than,
The power output detecting step: detect the power of radiofrequency signal of antenna output whether less than the performance number of expection, if less than,
Compensation process: adjust the width of the radiofrequency signal of described antenna output, compensate accordingly;
Described temperature threshold is made as-6 degrees centigrade;
In described compensation process, rule of thumb data, widen the width of the radiofrequency signal of described antenna output; What described antenna was exported is the gsm wireless signal.
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| CN2010102113839A CN101873149B (en) | 2010-06-28 | 2010-06-28 | High-power radio frequency system and radio frequency transmission method |
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| CN2010102113839A CN101873149B (en) | 2010-06-28 | 2010-06-28 | High-power radio frequency system and radio frequency transmission method |
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| CN101873149B true CN101873149B (en) | 2013-05-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312364A (en) * | 2012-03-11 | 2013-09-18 | 联发科技股份有限公司 | RF module |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103701418B (en) * | 2013-11-22 | 2017-11-14 | 络达科技股份有限公司 | Compensation method of power amplification unit of wireless radio frequency module |
| CN104617976B (en) * | 2014-12-30 | 2017-01-11 | 无锡识凌科技有限公司 | RFID (radio frequency identification device) front-end self-adaptive unit and control method thereof |
| CN104901713B (en) * | 2015-05-22 | 2017-04-12 | 成都前锋电子仪器有限责任公司 | Wireless module power consumption control circuit |
| CN113630144A (en) * | 2021-08-18 | 2021-11-09 | 长春理工大学 | Wide-temperature high-reliability wireless local area network module |
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| CN1193224A (en) * | 1997-01-31 | 1998-09-16 | 三星电子株式会社 | Method for controlling radio signal power according to variation of frequency and temp. in paging signal-emission machine |
| CN1489830A (en) * | 2001-01-29 | 2004-04-14 | 日本电气株式会社 | TDMA transceiver and receiving automatic gain control method thereof |
| CN1757186A (en) * | 2003-03-05 | 2006-04-05 | 斯特拉特克斯网络公司 | Transceiver power detection architecture |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7283792B2 (en) * | 2004-10-15 | 2007-10-16 | Nokia Corporation | Method and apparatus for providing limiting power adjustment in a wireless communication system |
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- 2010-06-28 CN CN2010102113839A patent/CN101873149B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1193224A (en) * | 1997-01-31 | 1998-09-16 | 三星电子株式会社 | Method for controlling radio signal power according to variation of frequency and temp. in paging signal-emission machine |
| CN1489830A (en) * | 2001-01-29 | 2004-04-14 | 日本电气株式会社 | TDMA transceiver and receiving automatic gain control method thereof |
| CN1757186A (en) * | 2003-03-05 | 2006-04-05 | 斯特拉特克斯网络公司 | Transceiver power detection architecture |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312364A (en) * | 2012-03-11 | 2013-09-18 | 联发科技股份有限公司 | RF module |
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| CN101873149A (en) | 2010-10-27 |
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