WO2009049507A1 - A compensating method for capacity of radio frequency module and a radio frequency module - Google Patents
A compensating method for capacity of radio frequency module and a radio frequency module Download PDFInfo
- Publication number
- WO2009049507A1 WO2009049507A1 PCT/CN2008/071497 CN2008071497W WO2009049507A1 WO 2009049507 A1 WO2009049507 A1 WO 2009049507A1 CN 2008071497 W CN2008071497 W CN 2008071497W WO 2009049507 A1 WO2009049507 A1 WO 2009049507A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- radio frequency
- module
- circuit
- compensation
- power
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/52—TPC using AGC [Automatic Gain Control] circuits or amplifiers
Definitions
- the present invention relates to optimization of performance of a radio frequency module in the field of communications, and more particularly to a method of compensating for gain of a radio frequency module and adjusting linearity of the radio frequency module, and an improved radio frequency module using the method.
- the RF module is an important part of communication systems such as base stations and repeaters. Its stability directly affects the stability of the entire communication system. With the rapid development of the communication industry, the requirements for it are getting higher and higher. Especially in the 3G generation, in order to pursue higher data rates and spectral efficiency, linear modulation is commonly used.
- FIG. 1 shows the structure of the existing RF module.
- the RF module includes a signal input terminal 11, a power amplifying circuit 12, a hardware compensation circuit 13, a monitoring signal line 14, a signal output terminal 15, a monitoring port 16, a monitoring signal line 17, and a radio frequency shielding case 19.
- the RF module is designed according to the gain and output power of a certain amount. When the performance of the power amplifier drops, the gain of the RF module decreases and the output power is insufficient. This phenomenon is one of the common problems in existing communication devices. This problem causes the performance of the RF module to be degraded and cannot be recovered. Indeed, the entire communication device may not operate normally.
- the hardware compensation circuit 13 of the RF module uses hardware compensation, that is, the temperature characteristics of the electronic components themselves are used for compensation.
- the hardware compensation is mainly to adjust the gate voltage of the power amplifier.
- the compensation includes the gain and linearity of the RF module. In the actual operation, there will be inconsistencies in the temperature characteristics of each power amplifier, and the temperature characteristics of each electronic component itself will be different, so the compensated gain And the accuracy and reliability of linearity are low. Similarly, since the gain and linearity are achieved by adjusting the gate voltage of the power amplifier, the gain can be compensated if it cannot be considered at the same time. Compensation and linearity compensation can not meet the needs of RF modules to a certain extent. For example, the gain and linearity compensation circuit in the hardware compensation circuit 13 uses hardware compensation. When the temperature characteristics of the hardware components used for hardware compensation are not exactly compatible with the characteristics of the power amplifier to be compensated, Gain and linearity compensation deviations occur at different temperatures.
- the detection signal and control signal of the power amplifier circuit in the RF module need to be compensated by the circuit.
- the detection of the downlink output power of the link in the RF module uses a commonly used RF detection device.
- the detection curve of the RF detection device is inconsistent with the compensation curve of the detection compensation device, the downlink output power may be inaccurate.
- the detection curve of the RF detection device is often inconsistent with the compensation curve of the detection compensation device, so that the accuracy of the detection power of the existing RF module is not very high, and the general error is ⁇ 2 dB.
- the compensation curve and the detection curve are seriously inconsistent At the same time, the detected error is even as high as ⁇ 5dB.
- the monitoring signal of the existing RF module is directly connected from the control circuit/detection circuit of the module and is summarized to the monitoring port 16. Since these monitoring semaphores are TTL, CMOS or analog signals, they are easy to interfere with each other or from external interference, which affects the performance of the RF module.
- the object of the present invention is to provide a method for compensating the performance of a radio frequency module and an improved radio frequency module by using the method, so as to improve the performance of the radio frequency module product, thereby further improving the accuracy of the compensation in the radio frequency module and adjusting the radio frequency module. Linearity, reliability and immunity to interference.
- the technical solution adopted by the present invention to solve the technical problem is: constructing a compensation method for performance of a radio frequency module, according to the present invention, the radio frequency module is provided with a power amplifying circuit, a radio frequency numerical control attenuator, and a radio frequency power detecting circuit And a module monitoring circuit, the method comprising:
- the module monitoring circuit queries the preset gain compensation table according to the currently set frequency band and the collected temperature data, or calculates according to a preset formula/algorithm, and the obtained gain compensation data is sent to the radio frequency numerical control.
- the module monitoring circuit queries the preset linearity compensation table according to the temperature data collected by the module or Calculated according to a preset formula/algorithm, the obtained linearity compensation data is digital-to-analog converted into a corresponding control voltage and sent to the power amplifying circuit, thereby controlling the linearity of the radio frequency module;
- the module monitoring circuit queries the preset power compensation table according to the collected temperature data or calculates according to a preset formula/algorithm, and the obtained power compensation value is added to the currently detected power detection value. And further, the corrected power detection value is obtained.
- step S1 further includes:
- the module monitoring circuit queries the frequency band set in the program, the temperature sensor actually detects the internal temperature of the RF module, and the processor obtains the current temperature value;
- step S2 further includes:
- step S3 further includes:
- the technical solution adopted by the present invention to solve the technical problem is: constructing a radio frequency module, comprising a radio frequency shielding shell, wherein the radio frequency shielding shell is provided with power amplification in series on the signal main link a circuit and a compensation circuit, wherein the radio frequency shielding housing is provided with a monitoring port of the radio frequency module.
- the compensation circuit comprises a radio frequency numerical control attenuator
- the radio frequency shielding shell is further provided with a module monitoring circuit and a device
- the power amplifying circuit and the radio frequency digitally controlled attenuator are serially connected to the radio frequency power detecting circuit on the signal main link
- the module monitoring circuit is respectively connected with the power amplifying circuit, the radio frequency numerical control attenuator and the radio frequency power detecting circuit through the monitoring signal line.
- the module monitoring circuit is also connected to the monitoring port via the RS-485 bus.
- the module monitoring circuit includes a processor, a crystal oscillator, an RS-485 converter, a third analog-to-digital converter, and a temperature sensor, wherein the crystal oscillator is connected to a reference clock pin of the processor, where The RS-48 5 converter is connected to the transceiver signal line of the processor, the output portion of the third analog-to-digital converter is connected to the processor, and the input portion of the third analog-to-digital converter is connected to the temperature sensor.
- the RF power detection circuit includes a second directional coupler, a detection device, a second isolator, and a second analog to digital converter, a main signal input terminal of the second directional coupler, and a radio frequency numerical control attenuator Connected, the main signal output end of the second directional coupler is connected to the output end of the radio frequency module, the second directional coupler couples a certain proportion of the radio frequency signal from the main signal link, and the signal end and the detection device coupled by the second directional coupler The input is connected, the output of the detecting device is connected to the input of the second analog-to-digital converter via the second isolator, and the output of the second analog-to-digital converter is connected to the processor.
- control part of the radio frequency digitally controlled attenuator is connected to the processor in the module monitoring circuit, and the signal input end of the radio frequency digitally controlled attenuator is connected to the output end of the power amplifying circuit, and the signal output of the radio frequency numerical control attenuator The terminal is connected to the RF power detection circuit.
- the monitoring port of the radio frequency module includes a data connector that connects a monitoring signal of the module monitoring circuit to a control device at a periphery of the radio frequency module, and the data connector and the module monitoring circuit The output RS-485 bus connection.
- the method for compensating the performance of the radio frequency module and the radio frequency module mainly replace the pure hardware control compensation circuit by using a combination of software and hardware for controlling the hardware and software compensation circuit and the module monitoring circuit, thereby improving the compensation of the radio frequency module.
- Accuracy and accuracy the same as the RS-485 bus output mode, because the RS-485 bus is a differential level mode, eliminating the interference between the semaphores; and the module semaphore is converted into data volume transmission, avoiding
- the introduction of external interference signals enhances the reliability and anti-interference ability of the RF module; and because the RF module uses the above-mentioned structure monitoring method, it can automatically debug and test with tools such as computers, which improves the production efficiency.
- Figure 1 is a schematic structural view of a conventional radio frequency module
- FIG. 2 is a schematic structural view of a radio frequency module according to the present invention.
- FIG. 3 is a schematic structural diagram of a module monitoring circuit of a radio frequency module according to the present invention.
- FIG. 4 is a schematic structural diagram of a radio frequency power detecting circuit of a radio frequency module according to the present invention.
- FIG. 5 is a schematic structural diagram of a power amplifying circuit of a radio frequency module according to the present invention.
- FIG. 6 is a flowchart of a method for querying a gain compensation table in a compensation method according to the present invention.
- FIG. 7 is a flowchart of a method for querying a linearity compensation table in a compensation method according to the present invention.
- FIG. 8 is a flow chart of a method for correcting a power detection value in the compensation method of the present invention.
- An object of the present invention is to provide a method for compensating the performance of a radio frequency module and an improved radio frequency module obtained according to the method.
- the radio frequency module includes a radio frequency shielding shell 211, and a monitoring port 207 of the radio frequency module is disposed outside the casing of the radio frequency shielding shell 211.
- the housing of the radio frequency shielding shell 211 is sequentially connected to the signal main.
- a power amplifier circuit 201, a radio frequency digitally controlled attenuator 202, and a radio frequency power detecting circuit 203 on the link are further provided with a module monitoring circuit 209 in the housing of the radio frequency shielding housing 211.
- Module monitoring circuit 209 Then, it is connected to the monitoring port 207 through the RS-485 bus 208.
- the signals of the radio frequency module are introduced by the signal input terminal 200 and output to the corresponding link via the signal output terminal 204.
- the function of the RF digitally controlled attenuator 202 in the RF module is the effect of gain attenuation (for example, a power amplifier module with a gain of 40 dB, with a ldB attenuation on its link, the gain is only 39 dB), here mainly the control RF The role of the module gain.
- the illustrated module monitoring circuit 209 includes a processor (ie, CPU) 301, a crystal oscillator 302, an RS-48 5 converter 303, a third analog-to-digital converter 304, and a temperature sensor 305, wherein the crystal oscillator 302 is connected to the reference clock pin of the processor 301, the RS-485 converter 303 is connected to the transceiver signal line of the processor 301, and the output portion of the third analog-to-digital converter 304 is connected to the processor 301, and the third analog-to-digital conversion
- the input portion of the unit 304 is coupled to the temperature sensor 305.
- the processor 301 in the module monitoring circuit 209 is connected to the temperature sensor 305.
- the processor 301 includes a device that can perform data processing functions, such as an MCU and a DSPs FPGA. This embodiment takes an MCU as an example.
- the illustrated RF power detecting circuit 203 includes a second directional coupler 401, a detecting device 402, a second isolator 403, and a second analog to digital converter 404, and a second directional coupler 401.
- the main signal input end is connected to the RF numerical control attenuator 202
- the main signal output end of the second directional coupler 401 is connected to the RF module output end
- the second directional coupler 402 couples a certain proportion of the RF signal from the main signal link.
- the signal terminal coupled to the second directional coupler 401 is coupled to the input terminal of the detector device 402, and the output terminal of the detector device 402 is coupled to the input terminal of the second isolator 404 and the second analog to digital converter.
- the output of the device 04 04 is coupled to the processor 301.
- control portion of the RF numerical control attenuator 202 is connected to the processor 301 in the module monitoring circuit 209, and the signal input end of the RF digitally controlled attenuator 202 is connected to the output end of the power amplifying circuit 201, and the RF numerical control attenuator 202
- the signal output terminal is connected to the RF power detecting circuit 203.
- the monitoring port 207 of the radio frequency module includes a data connector that connects the monitoring signal of the module monitoring circuit 209 to the control device at the periphery of the radio frequency module, and the data connector is connected to the RS-485 bus outputted from the module monitoring circuit 209.
- the power amplifying circuit 201 includes a power amplifier 501, a third isolator 502, and digital to analog conversion. 503.
- An input end of the power amplifier 501 is connected to the signal output end 200 of the radio frequency module, an output end of the power amplifier 501 is connected to an input end of the radio frequency digitally controlled attenuator 202, and a gate of the power amplifier 501 is subjected to a third isolator 502 and digital-to-analog conversion.
- the output portion of the 503 is connected, and the input portion of the digital to analog converter 503 is connected to the processor 301 in the module monitoring circuit 209.
- the digital-to-analog converter 503 acquires data from a data bus connected to the processor 301 and converts the data into a proportional voltage value that is controlled by the RF circuit isolator to control the gate of the power amplifier 501 in the power amplifying circuit 201. Extreme voltage.
- the RF module works, the temperature sensor 305 in the module monitoring circuit 209 collects the temperature inside the RF module, and sends the collected temperature data to the MCU 301; the software program in the MCU 301 runs, the software The program will query the linear compensation table stored in the program according to the current temperature collected by the program or calculate according to the preset formula/algorithm, and send the compensation data obtained or calculated by the query to the data bus of the MCU 301;
- the digital-to-analog converter 503 acquires compensation data from a data bus connected to the MCU 301, and converts the compensation data into a proportional voltage value that is controlled by the third isolator 502 to the power amplifier 501 in the power amplifying circuit 201.
- the gate voltage controls the linearity of the power amplifier 501, thereby adjusting the linearity of the RF module, and reducing the linearity of the RF module from the ambient temperature.
- the software program in the MCU 301 runs, and the software program queries the power compensation table stored in the program according to the current temperature collected, or calculates according to a preset formula/algorithm, and The power compensation data obtained or calculated by the query is corrected for the detected RF power value, thereby reducing the influence of the power detection accuracy of the RF module on the ambient temperature.
- the software program in the MCU 301 queries the gain compensation table stored in the program according to the currently set frequency band and the current temperature set, or calculates according to a preset formula/algorithm, and obtains or calculates the query.
- the compensation data is sent to the RF digitally controlled attenuator 202 to complete the gain control of the entire RF module, thereby reducing the effect of the RF module gain on the ambient temperature.
- the maximum gain of the RF module of the present invention is designed to be greater than the nominal gain, and the excess is adjusted as needed by the RF digitally controlled attenuator 104.
- the requirement here is that the module monitoring circuit 111 determines the difference between the RF output power and the RF input power detected by the RF input power detecting circuit 101 and the RF output power detecting circuit 105, and compares with a preset nominal value.
- the RF digitally controlled attenuator 104 When the difference between the actual RF output power and the RF input power is greater than the nominal value, the RF digitally controlled attenuator 104 will increase the attenuation, adjust to the difference and the nominal value are equal, no longer adjusted; otherwise, when the actual RF output power and RF input power If the difference is less than the nominal value ⁇ , the attenuation of the RF numerical control attenuator 104 is reduced, and the difference between the difference and the nominal value is also adjusted.
- the radio frequency module provided by the invention mainly replaces the pure hardware control compensation circuit by using a combination of hardware and software compensation circuit and module control circuit controllable software and hardware, thereby improving the accuracy and accuracy of the compensation of the radio frequency module.
- RS using the output mode of RS-485 bus, because RS-485 bus is differential level mode, it eliminates the interference between semaphores; and the module semaphore is converted into data volume transmission, avoiding the introduction of external interference signals, enhancing The reliability and anti-interference ability of the RF module; and because the RF module uses the above-mentioned structure monitoring method, it can automatically debug and test using tools such as a computer, thereby improving the production efficiency.
- the present invention further provides a method for compensating the performance of a radio frequency module.
- the improved radio frequency module is provided.
- the radio frequency module of the present invention is provided with a power amplifying circuit 201 and a radio frequency numerical control attenuator. 202.
- the invention adopts a compensation method combining software and hardware, and changes the original hardware compensation circuit to the RF numerical control attenuator 202.
- the software program running on the processor in the module monitoring circuit 209 queries the preset power compensation table according to the current temperature collected by the system or calculates according to a preset formula/algorithm, and obtains or calculates by using a query.
- the obtained compensation data corrects the detected RF power value, thereby reducing the influence of the RF module power detection accuracy on the ambient temperature.
- the detected result may be inconsistent with the actual one. Therefore, the detected result and the actual proof need to be proofed, and the correction value at each temperature is made into a table. In this way, by detecting the current temperature, the correction value corresponding to the temperature is queried, and the correction value is directly added to the detection result.
- the value read is the result of direct correction.
- the software program running on the processor 301 in the module monitoring circuit 209 queries the preset gain compensation table according to the current frequency range set by the current program and the current ambient temperature collected by the module or according to a preset formula/
- the algorithm performs calculation, and the obtained or calculated compensation data is sent to the RF numerical control attenuator 302 via the control connection line 305, and the RF numerical control attenuator 302 generates a signal attenuation effect on the main link, thereby reducing the gain of the RF module by the environment.
- the function of the RF digitally controlled attenuator 302 here is the effect of gain attenuation.
- a power amplifier module with a gain of 40 dB has a gain of only 39 dB when IdB is attenuated on its link.
- the software program running on the processor 301 in the module monitoring circuit 209 queries the preset linearity compensation table according to the current temperature collected by the system or calculates according to a preset formula/algorithm.
- the obtained or calculated compensation data adjusts the voltage value in the third analog-to-digital converter 304 to adjust the linearity of the radio frequency module to reduce the influence of the linearity of the radio frequency module on the ambient temperature.
- the linearity corresponding to each temperature value may be different, so the device needs to be tested under certain conditions.
- the above power compensation table is the linearity that needs to be tested by the actual temperature, and the linearity adjustment is This is achieved by controlling the power amplifier tube gate voltage of the power amplifier of the power amplifying circuit 201.
- the formula/algorithm refers to a formula or an algorithm that can implement the above table function, and actually completes the same function, that is, completes one linearity for each temperature.
- the processor (ie, the MCU) 301 further includes a device that can perform data processing functions, such as an MCU, a DSP, an FPGA, and the like.
- This embodiment takes an MCU as an example.
- the linearity compensation table and the power compensation table which are preset in the program are also formed according to the theoretical temperature characteristic curve simulation of the power amplifier in the power amplifier circuit 201, the RF detection tube in the RF power detection circuit, or the actual measurement. Discrete table.
- the linear compensation formula/algorithm and power compensation table formula/algorithm used in the program is based on the theoretical temperature characteristic curve simulation or actual measurement of the power amplifier in the power amplifier circuit 201, the RF detection tube in the RF power detection circuit, and the like. Come.
- step 602 is a flow chart of a method for querying a gain compensation table in the compensation method of the present invention.
- the preset program of the processor 301 of the module monitoring circuit 209 runs all of the initial values.
- the module monitoring circuit 209 queries the frequency band set in the program, and the temperature sensor 305 actually detects the internal temperature of the radio frequency module and obtains the current temperature value.
- step 606 according to the frequency band value of the query and the obtained temperature value, the gain compensation table pre-stored in the program is queried or calculated according to the formula/algorithm stored in the program, and the corresponding compensation value is obtained.
- the obtained compensation value is output to the radio frequency control attenuator 202, and the gain of the radio frequency module is adjusted based on the compensation value.
- the preset program of the processor 301 of the module monitoring circuit 209 runs all the initial values.
- the initial value mainly includes the data required for the program operation, the rated gain value of the reading RF module, the linearity compensation value, and the power detection correction value.
- the processor 301 runs a program, and the temperature sensor 305 actually detects the internal temperature of the radio frequency module to obtain the current temperature value.
- step 706 according to The temperature value acquired in step 305 is queried by a linearity compensation table stored in advance in the program or calculated according to a formula/algorithm stored in the program, and a corresponding compensation value is obtained.
- the obtained compensation value is output to the third analog to digital converter 304 and converted to a corresponding voltage value.
- the voltage value obtained in step 708 is sent to the gate of the radio frequency power amplifier of the power amplifying circuit 201 to adjust the linearity of the radio frequency module.
- step 802 is a flow chart of a method for querying a power detection compensation table in the compensation method of the present invention.
- the preset program of the processor 301 of the module monitoring circuit 209 runs all of the initial values.
- the processor 301 runs a program, and the temperature sensor 305 actually detects the internal temperature of the radio frequency module to obtain the current temperature value.
- step 806 according to the temperature value obtained in step 804, the power compensation table pre-stored in the program is queried or calculated according to the formula/algorithm stored in the program, and the corresponding power compensation value is obtained.
- the obtained power compensation value is compared with the currently detected power detection value, and the corrected power detection value is obtained.
- the method for compensating the performance of the radio frequency module replaces the hardware by means of a combination of software and hardware, and intelligently compensates the radio frequency module by using the data obtained by the preset compensation table or formula/algorithm, which can be accurate and easy. Adjust the various characteristics of the device to improve the performance of the RF module product, and further meet the stability of the RF module; replace the existing technology by combining the software and hardware with the control of the hardware and software compensation circuit and the module monitoring circuit.
- the pure hardware control compensation circuit improves the accuracy and accuracy of the compensation of the RF module.
- the general accuracy can be controlled within ⁇ 1.0dB or less. And because the RF module can automatically debug and test with tools such as computers, improve The efficiency of production.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Transmitters (AREA)
- Control Of Amplification And Gain Control (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/738,645 US8422959B2 (en) | 2007-10-19 | 2008-07-01 | Compensating method for capacity of radio frequency module and a radio frequency module |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200710123969.8 | 2007-10-19 | ||
CNA2007101239698A CN101141162A (zh) | 2007-10-19 | 2007-10-19 | 一种射频模块性能的软硬件补偿方法及改进的射频模块 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009049507A1 true WO2009049507A1 (en) | 2009-04-23 |
Family
ID=39192941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2008/071497 WO2009049507A1 (en) | 2007-10-19 | 2008-07-01 | A compensating method for capacity of radio frequency module and a radio frequency module |
Country Status (3)
Country | Link |
---|---|
US (1) | US8422959B2 (zh) |
CN (1) | CN101141162A (zh) |
WO (1) | WO2009049507A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108123764A (zh) * | 2017-12-26 | 2018-06-05 | 三维通信股份有限公司 | 一种具有链路自适应性的镜像校准装置及方法 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101141162A (zh) * | 2007-10-19 | 2008-03-12 | 深圳国人通信有限公司 | 一种射频模块性能的软硬件补偿方法及改进的射频模块 |
CN101789804B (zh) * | 2009-12-25 | 2014-03-26 | 摩比天线技术(深圳)有限公司 | 一种射频前端装置及其增益控制方法、系统 |
CN103750826A (zh) * | 2013-12-25 | 2014-04-30 | 杨松 | 无线无源测量温度的方法、系统及组成该系统的装置 |
CN106353585A (zh) * | 2016-10-20 | 2017-01-25 | 成都前锋电子仪器有限责任公司 | 一种用于射频功率反射计的数据处理电路 |
CN108736953B (zh) * | 2018-04-10 | 2022-05-06 | 京信网络系统股份有限公司 | 无线直放站共享方法、装置、系统及计算机设备 |
CN109257023B (zh) * | 2018-08-24 | 2022-10-14 | 中国电子科技集团公司第三十六研究所 | 一种功放保护电路和方法 |
CN110350989B (zh) * | 2019-07-26 | 2021-08-31 | 中国电子科技集团公司第四十一研究所 | 一种检波及校准电路、射频信号发生装置及方法 |
CN114088153A (zh) * | 2020-08-24 | 2022-02-25 | 成都秦川物联网科技股份有限公司 | 一种物联网智能燃气表温度补偿方法 |
CN112867042B (zh) * | 2020-12-31 | 2023-05-16 | 京信网络系统股份有限公司 | 增益控制方法、装置、基站和存储介质 |
CN114459524A (zh) * | 2022-01-25 | 2022-05-10 | 南京邮电大学 | 一种自适应补偿的柔性射频传感系统和方法 |
CN117119570A (zh) * | 2023-04-26 | 2023-11-24 | 荣耀终端有限公司 | 一种射频功率控制方法、模组及终端设备 |
CN116865792A (zh) * | 2023-07-31 | 2023-10-10 | 东集技术股份有限公司 | 一种rfid读写器系统及其发射功率控制方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1114847A (zh) * | 1993-08-20 | 1996-01-10 | 莫托罗拉公司 | 具有功率放大器线性化电路的无线电发射机 |
CN1224281A (zh) * | 1997-10-10 | 1999-07-28 | 摩托罗拉公司 | 具有温度补偿输出功率电平控制电路的射频发送器及其方法 |
CN1925340A (zh) * | 2006-09-25 | 2007-03-07 | 北京北方烽火科技有限公司 | 一种具有超大动态范围的数字自动增益控制系统 |
CN101141162A (zh) * | 2007-10-19 | 2008-03-12 | 深圳国人通信有限公司 | 一种射频模块性能的软硬件补偿方法及改进的射频模块 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6507732B1 (en) * | 1999-09-14 | 2003-01-14 | Lucent Technologies Inc. | Dynamic path gain compensation for radios in wireless communication systems |
US6452454B1 (en) * | 2000-11-13 | 2002-09-17 | Conexant Systems, Inc. | Temperature compensation module |
US20040142668A1 (en) * | 2003-01-10 | 2004-07-22 | David Ge | Systems and methods for transmitting a radio signal |
JP4175118B2 (ja) * | 2003-01-14 | 2008-11-05 | ヤマハ株式会社 | コンテンツ処理装置及びプログラム |
US7133644B2 (en) * | 2003-06-06 | 2006-11-07 | Interdigital Technology Corporation | Digital baseband system and process for compensating for analog radio transmitter impairments |
JP4255361B2 (ja) * | 2003-11-07 | 2009-04-15 | 富士通株式会社 | 歪み補償増幅器 |
CN101141134A (zh) * | 2007-10-19 | 2008-03-12 | 深圳国人通信有限公司 | 一种射频模块性能的软件补偿方法及改进的射频模块 |
-
2007
- 2007-10-19 CN CNA2007101239698A patent/CN101141162A/zh active Pending
-
2008
- 2008-07-01 WO PCT/CN2008/071497 patent/WO2009049507A1/zh active Application Filing
- 2008-07-01 US US12/738,645 patent/US8422959B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1114847A (zh) * | 1993-08-20 | 1996-01-10 | 莫托罗拉公司 | 具有功率放大器线性化电路的无线电发射机 |
CN1224281A (zh) * | 1997-10-10 | 1999-07-28 | 摩托罗拉公司 | 具有温度补偿输出功率电平控制电路的射频发送器及其方法 |
CN1925340A (zh) * | 2006-09-25 | 2007-03-07 | 北京北方烽火科技有限公司 | 一种具有超大动态范围的数字自动增益控制系统 |
CN101141162A (zh) * | 2007-10-19 | 2008-03-12 | 深圳国人通信有限公司 | 一种射频模块性能的软硬件补偿方法及改进的射频模块 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108123764A (zh) * | 2017-12-26 | 2018-06-05 | 三维通信股份有限公司 | 一种具有链路自适应性的镜像校准装置及方法 |
CN108123764B (zh) * | 2017-12-26 | 2024-03-19 | 三维通信股份有限公司 | 一种具有链路自适应性的镜像校准装置及方法 |
Also Published As
Publication number | Publication date |
---|---|
US20100240325A1 (en) | 2010-09-23 |
US8422959B2 (en) | 2013-04-16 |
CN101141162A (zh) | 2008-03-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2009049507A1 (en) | A compensating method for capacity of radio frequency module and a radio frequency module | |
WO2009049506A1 (fr) | Procédé de compensation de la performance d'un module radiofréquence et module radiofréquence | |
CN101834677B (zh) | 射频拉远系统中基于基带功率统计的驻波检测系统及方法 | |
CN101394151B (zh) | 功率放大器自动增益补偿与线性控制方法及装置 | |
US7680462B2 (en) | Wireless transceiver system | |
CN102281113B (zh) | 通信中继装置及其驻波比检测装置和方法 | |
WO2012174831A1 (zh) | 一种进行iq信号实时校准的方法和装置 | |
CN113504742B (zh) | 一种基于fpga的双馈自动电平控制系统 | |
WO2012027982A1 (zh) | 互补增强功率补偿方法、装置及通信设备 | |
US20070224932A1 (en) | Wireless transceiver system | |
CN101350643A (zh) | 一种射频模块性能的补偿方法及改进的射频模块 | |
KR20010064868A (ko) | 온도에 따른 수신전계강도 보상 장치 및 방법 | |
CN100574125C (zh) | 无线收发系统 | |
CN107370471B (zh) | 一种pxi总线可编程放大/衰减器及其校准方法 | |
CN117200876A (zh) | 一种针对跳频散射通信的功率自动校准方法 | |
CN115277291B (zh) | 一种用于冷链的mbus抗干扰装置 | |
CN201178414Y (zh) | 一种利用软件补偿方法改进的射频模块 | |
CN201178413Y (zh) | 一种利用软硬件补偿方法改进的射频模块 | |
CN202143072U (zh) | 一种功率和驻波比检测的装置 | |
CN113466774A (zh) | 适应adc线性特性情形下实现频谱仪功率自动校准的系统及其方法 | |
CN113517867A (zh) | 微波放大器输出功率检测系统、检测芯片及检测方法 | |
CN203788284U (zh) | 一种控制射频增益的装置 | |
CN201282450Y (zh) | 一种改进的射频模块 | |
WO2020243909A1 (zh) | 一种驻波检测装置及通信设备 | |
CN205610841U (zh) | 数字电视发射机监控系统 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08757891 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12738645 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC - FORM 1205A OF 26-08-2010 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 08757891 Country of ref document: EP Kind code of ref document: A1 |