CN101350643A - Method for compensating RF module performance and improved RF module - Google Patents
Method for compensating RF module performance and improved RF module Download PDFInfo
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- CN101350643A CN101350643A CNA2008102104847A CN200810210484A CN101350643A CN 101350643 A CN101350643 A CN 101350643A CN A2008102104847 A CNA2008102104847 A CN A2008102104847A CN 200810210484 A CN200810210484 A CN 200810210484A CN 101350643 A CN101350643 A CN 101350643A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The present invention relates to a compensation method of radio frequency module performance. In the compensation method, a module monitoring circuit and a software and hardware compensation circuit are added in the existing radio frequency module; the software program operating on the processor in the module monitoring circuit is used for inquiring about the preset gain compensation form according to the current ambient temperature, or for calculating according to the preset formula/algorithm; the acquired compensation data is converted by the software and hardware compensation circuit and is then transmitted to a power amplification circuit, so as to reduce influence of the environmental temperature on the gain and linearity of the radio frequency module; simultaneously, the acquired compensation data is used for correcting the value of radio frequency, so as to reduce the influence of the environmental temperature on the detection accuracy of the power of the radio frequency module. The present invention also provides a radio frequency module which is improved by the method. The compensation method and the radio frequency module can easily improve the accuracy, reliability and anti-interference performance of compensation by combining the software and the hardware; simultaneously, the computer and other tools can be used for automatic modulation and testing so as to improve the efficiency of production.
Description
[technical field]
The present invention relates to the optimization of RF module performance in the communications field, relate in particular to a kind of to RF module performance compensation method and utilize this method after improved radio-frequency module.
[background technology]
Radio-frequency module is as the important component part of communication systems such as base station, repeater, and its stability directly has influence on the stability of whole communication system, and is along with developing rapidly of the communications industry, also more and more higher to its requirement.Especially in the 3G epoch, in order to pursue higher data rate and spectrum efficiency, generally adopt linear modulation mode (for example mode such as QPSK, 16QAM), these modulation systems need the higher radio-frequency module of the linearity.Existing radio-frequency module exists for various reasons that the power detection accuracy is not high, the linearity of radio-frequency (RF) power amplification is bad, gain stability radio-frequency module is bad, can be with variation of temperature defective such as variation.
Fig. 1 is the structural representation of existing radio-frequency module.As shown in the figure, radio-frequency module comprises signal input part 11, power amplification circuit 12, hardware compensating circuit 13, signal monitoring cable 14, signal output part 15, monitoring mouth 16, signal monitoring cable 17 and radio shielding shell 19.
There is following defective in above-mentioned existing radio-frequency module:
What 1, adopt in the hardware compensating circuit 13 of radio-frequency module is hardware compensating, just adopts the temperature characterisitic of electronic devices and components itself to compensate.Hardware compensating mainly is to adjust the grid voltage of power amplifier tube.In actual mechanical process, because the temperature characterisitic of each power amplifier tube can exist inconsistent, and the temperature characterisitic of each electronic devices and components itself also can there are differences, and therefore accuracy and the reliability that is compensated is lower, can not satisfy the needs of radio-frequency module to a certain extent.Such as, what the gain compensation circuit in the hardware compensating circuit 13 adopted is hardware compensating, when the temperature characterisitic of the electronic devices and components that adopt when hardware compensating can not fit like a glove with the characteristic that power amplifier tube need compensate, the phenomenon of gain compensation deviation just can appear in different temperatures.
2, to need the part of circuit compensation also be to adopt the hardware compensating method usually for the detection signal of the power amplification circuit in the radio-frequency module and control signal.What for example the size detection of the down output power of link adopted in the radio-frequency module is the radio frequency detection device of using always, the inaccurate phenomenon of down output power will occur when the detection curve of this radio frequency detection device is inconsistent with the compensated curve of detection compensating device.In actual mechanical process, the detection curve of radio frequency detection device compensated curve frequent and the detection compensating device is inconsistent, the precision that causes existing radio-frequency module detection power is not very high, the general precision error is at ± 2dB, when compensated curve and detection curve serious inconsistent the time, the error that detects even up to ± 5dB.
3, as shown in Figure 1, the pilot signal amount of existing radio-frequency module is that the control circuit/testing circuit from module directly connects, and is aggregated into monitoring mouthfuls 16.Because the signal that these pilot signal amounts are TTL, CMOS or analog quantity interferes with each other or is subjected to extraneous interference easily, causes the performance of radio-frequency module to be affected.
These defectives that exist from above prior art as can be seen, we are necessary to design a kind of novel RF module performance compensation method and radio-frequency module now to improve accuracy, reliability and the anti-jamming capacity that compensates in the radio-frequency module.
[summary of the invention]
The purpose of this invention is to provide a kind of to RF module performance compensation method and utilize this method after improved radio-frequency module, with raising radio-frequency module properties of product, thereby further improve accuracy, reliability and the anti-jamming capacity that compensates in the radio-frequency module.
For achieving the above object, technical scheme provided by the present invention is:
A kind of compensation method of RF module performance, the step of described compensation method is as follows:
(1), the module monitors circuit in the radio-frequency module is gathered the radio-frequency module temperature inside in real time, and a temperature data that collects is delivered in the processor of module monitors circuit;
(2), the operation of the software program in the described processor, this software program is according to the Current Temperatures that collects, inquiry is preset in the gain compensation form in the program or according to the formula/algorithm computation in the program of being stored in, and gain compensation data resultant inquiry or that calculate gained are delivered in the software and hardware compensating circuit;
Simultaneously, this software program can be according to the Current Temperatures that collects, and inquiry is stored in the power back-off form in the program or calculates according to the formula/algorithm in the program of being stored in, and obtains the power back-off data;
(3) the software and hardware compensating circuit obtains gain compensation data data, delivers to power amplification circuit after changing through the software and hardware compensating circuit, and then realizes the gain of the whole radio-frequency module of control and the linearity of adjustment radio-frequency module;
The power back-off data that obtain then in order to revise detected radio-frequency power value, reduce the effect influenced by ambient temperature of radio-frequency module power detection accuracy thereby reach.
The inquiry gain compensation form in the described step (2) or the concrete steps of computing formula/algorithm are as follows:
(a), after radio-frequency module starts, the processor pre-set programs is moved all initial values;
(b), the processor working procedure, the detection module temperature is obtained current temperature value;
(c), according to the temperature value that obtains, inquiry is left the compensation form in the program in advance in or is calculated according to the formula/algorithm in the program of being stored in, and obtains the corresponding compensation value;
(d), the offset that obtains is outputed to D/A converting circuit converts control voltage to, the gain of adjustment radio-frequency module.
The inquiry power back-off form in the described step (2) or the step of computing formula/algorithm are as follows:
1., after radio-frequency module starts, the processor pre-set programs is moved all initial values;
2., the processor working procedure, detection module temperature, and obtain current temperature value;
3., according to the temperature value that obtains, inquiry is left the compensation form in the program in advance in or is calculated according to the formula/algorithm in the program of being stored in, and obtains the corresponding compensation value;
4., the radio-frequency power detected value that the current inquiry of offset correction that obtains is obtained.
The compensation method of RF module performance provided by the invention replaces hardware mode in the mode of software and hardware combination, data by default compensation form or formula/algorithm gained are carried out the intellectuality compensation to radio-frequency module, can be accurately and the various characteristics index of trim easily, to improve the radio-frequency module properties of product, further satisfy the stability of radio-frequency module work.
As application to said method, the present invention also provides a technical scheme about radio-frequency module: a kind of improved radio-frequency module, comprise a radio shielding shell, be provided with power amplification circuit in this radio shielding housing, compensating circuit, power amplification circuit, compensating circuit is serially connected on the signal primary link in regular turn, described radio shielding housing is provided with the monitoring mouth of radio-frequency module outward, it is characterized in that: described compensating circuit is the software and hardware compensating circuit, also be provided with the module monitors circuit in the described radio shielding housing, between power amplification circuit and the software and hardware compensating circuit, be connected by signal monitoring cable respectively between software and hardware compensating circuit and the module monitors circuit, the module monitors circuit then mouthful is connected by the RS-485 bus with monitoring.
Further, described software and hardware compensating circuit comprises RF power sensing circuit, D/A converting circuit, analog to digital conversion circuit and first, second radio circuit isolator; Wherein the input of RF power sensing circuit connects described power amplification circuit, output links to each other with first RF isolator, first RF isolator also links to each other with the output of analog to digital conversion circuit simultaneously, and the output of analog to digital conversion circuit links to each other with the module monitors circuit; The input of D/A converting circuit links to each other with the module monitors circuit, and output links to each other with second RF isolator, and second RF isolator also connects described power amplification circuit.
Further, described module monitors circuit comprises CPU, crystal oscillator, RS-485 transducer and temperature sensor; Wherein crystal oscillator is connected with reference clock pin among the CPU, and the RS-485 transducer is connected with receiving and transmitting signal line among the CPU.
Further, the output of analog-digital conversion circuit as described links to each other with CPU in the described module monitors circuit, and the other end is connected with temperature sensor in the module monitors circuit; The input of described D/A converting circuit also links to each other with CPU in the described module monitors circuit.
Further, the monitoring mouth of described radio-frequency module comprises the data connector that the pilot signal in the module monitors circuit is connected to the control device of radio-frequency module periphery, and the RS-485 bus of exporting in this data connector and the module monitors circuit is connected.
Further, described power amplification circuit comprises power amplifier and directional coupler, the input of its intermediate power amplifier connects signal input part, the output of power amplifier connects directional coupler, and the while power amplifier is connected with second RF isolator, directional coupler is connected with the input of RF power sensing circuit.
Improved radio-frequency module provided by the invention, the method of the software and hardware combining that main employing software and hardware compensating circuit and module monitors circuit are controlled has substituted pure hardware controls compensating circuit, the compensation precision and the accuracy of radio-frequency module have been improved, adopt the way of output of RS-485 bus simultaneously, because the RS-485 bus is the differential level mode, has eliminated the interference between the semaphore; And the module by signal amount has converted the data volume transmission to, has avoided the introducing of external interference signal, has strengthened the reliability and the anti-jamming capacity of radio-frequency module; And because radio-frequency module adopts the monitor mode of said structure, can adopt instrument debugging and tests automatically such as computer, improve the efficient of producing.
[description of drawings]
Fig. 1 is the structural representation of existing radio-frequency module;
Fig. 2 is the structural representation of radio-frequency module of the present invention;
Fig. 3 is the flow chart of inquiry power back-off form in the compensation method of the present invention;
Fig. 4 is the flow chart of inquiry gain compensation form in the compensation method of the present invention.
[embodiment]
The object of the present invention is to provide a kind of to the compensation method of RF module performance and the improvement radio-frequency module afterwards that obtains according to this method.
Below in conjunction with specific embodiment and accompanying drawing in detail the present invention is described in detail.
The compensation method of RF module performance provided by the invention, be in existing radio-frequency module as shown in Figure 1, to increase the module monitors circuit, change original hardware compensating circuit 13 simultaneously and be software and hardware compensating circuit 23, calculate according to the default gain compensation form of the current environmental temperature inquiry that collects or according to default formula/algorithm by the software program that moves on the CPU in the module monitors circuit 24, inquiry gained or the offset data of calculating gained are delivered to power amplification circuit after through 23 conversions of software and hardware compensating circuit, reduce the effect that radio-frequency module gain and the linearity are subjected to the influence of ambient temperature thereby reach; The software program that moves on the CPU in the module monitors circuit 24 is inquired about default power back-off form according to the Current Temperatures that collects or is calculated according to default formula/algorithm simultaneously, obtain or calculate the detected radio-frequency power value of offset data correction of gained with inquiry, reduce the effect that radio-frequency module power detection accuracy is subjected to the influence of ambient temperature thereby reach.
In the present invention, described CPU can also be the device that MCU, DSP, FPGA etc. can finish data processing function, and present embodiment is example with MCU.Default gain compensation form that is adopted and power back-off form also are the discrete forms according to the emulation of theoretical temperatures characteristic curve or the actual measuring and calculating arrangement formation of the devices such as radio frequency detection tube in power amplifier, the radio frequency testing circuit in the program.Gain compensation formula/the algorithm that adopts in the program and power back-off form formula/algorithm are to get according to the theoretical temperatures characteristic curve emulation of the devices such as radio frequency detection tube in power amplifier, the radio frequency testing circuit or actual measuring and calculating conclusion.
The concrete steps of above-mentioned compensation method are as follows:
(1), the module monitors circuit is gathered the radio-frequency module temperature inside in real time, and the temperature data that collects is delivered among the CPU;
(2), when the radio-frequency module gain compensation, software program operation among the CPU, this software program can be according to the Current Temperatures that collects, inquiry is stored in the gain compensation form in the program or calculates according to the formula/algorithm in the program of being stored in, and inquiry is obtained or the offset data of calculating gained is delivered in the software and hardware compensating circuit;
(3) the software and hardware compensating circuit obtains data, convert correspondent voltage to through the D/A converting circuit in the software and hardware compensating circuit, the control voltage that converts to is through delivering to the grid of power tube in the power amplification circuit behind the isolator, realize the gain of the whole radio-frequency module of control and the linearity of adjustment radio-frequency module, reduce radio-frequency module gain and linearity effect influenced by ambient temperature thereby reach;
(4) when radio-frequency power detects, software program operation among the CPU, this software program can be according to the Current Temperatures that collects, inquiry is stored in the power back-off form in the program or calculates according to the formula/algorithm in the program of being stored in, and, reduce the effect influenced by ambient temperature of radio-frequency module power detection accuracy thereby reach the detected radio-frequency power value of offset data correction that inquiry obtains.
Wherein, the flow process of the inquiry gain compensation form in the described step (2) is as shown in Figure 3:
(a), MCU initialization: radio-frequency module starts, all initial values of presetting among the MCU of program running;
(b), obtain the radio-frequency module temperature information: MCU runs software program, enquiry module temperature, and obtain the numerical value of Current Temperatures;
(c), inquiry gain compensation form: according to the temperature value that obtains, inquiry is left the compensation form in the program in advance in or is calculated according to the formula/algorithm in the program of being stored in, and obtains this temperature corresponding compensation value in the table;
(d), output gain offset data: the offset that obtains is outputed to D/A converting circuit, adjust the gain of radio-frequency module.
Simultaneously, the flow process of the inquiry power back-off form in the described step (4) is as shown in Figure 4:
1., MCU initialization: after radio-frequency module started, the MCU pre-set programs was moved all initial values;
2., obtain the radio-frequency module temperature information: MCU working procedure, enquiry module temperature, and obtain the numerical value of Current Temperatures;
3., inquiry power back-off form: according to the temperature value that obtains, inquiry is left the compensation form in the program in advance in or is calculated according to the formula/algorithm in the program of being stored in, and obtains this temperature corresponding compensation value in the table;
4., revise the power output detected value: the radio-frequency power detected value that obtains with the current inquiry of offset correction of acquisition.
The compensation method of RF module performance provided by the present invention, substituted pure hardware controls compensating circuit of the prior art by the method that adopts the controlled software and hardware combining of software and hardware compensating circuit and module monitors circuit, improved the precision and the accuracy of the compensation of radio-frequency module, general precision can be controlled at ± 1.0dB even littler scope in; And, improved the efficient of producing because radio-frequency module can adopt instrument debugging and tests automatically such as computer.
According to above method, it is a kind of through the radio-frequency module after improving that the present invention provides simultaneously.Below for describing in detail.
Fig. 2 is the structural representation that improves the back radio-frequency module provided by the present invention, as shown in the figure, its structure comprises a radio shielding shell 29, the housing of radio shielding shell 29 is provided with the monitoring mouth 26 of radio-frequency module outward, be provided with the power amplification circuit 22 and the software and hardware compensating circuit 23 that are serially connected in regular turn on the signal primary link in the housing of radio shielding shell 29, also be provided with module monitors circuit 24 in the housing of radio shielding shell 29, between power amplification circuit 22 and the software and hardware compensating circuit 23, be connected by signal monitoring cable 27 respectively between software and hardware compensating circuit 23 and the module monitors circuit 24,24 in module monitors circuit and monitoring mouthful are connected by RS-485 bus 28.In the modular structure of the present invention, the signal of radio-frequency module is imported by signal input part 21 and exports on the corresponding link via signal output part 25.
More specifically, software and hardware compensating circuit 23 comprises RF power sensing circuit, D/A converting circuit, analog to digital conversion circuit and first, second radio circuit isolator; Wherein the input of RF power sensing circuit connects described power amplification circuit, one end of the output and first RF isolator links to each other, the other end of first RF isolator links to each other with the output of analog to digital conversion circuit, and the output of analog to digital conversion circuit links to each other with the module monitors circuit; The input of D/A converting circuit links to each other with the module monitors circuit, and an end of the output and second RF isolator links to each other, and the other end of second RF isolator connects described power amplification circuit.In software and hardware compensating circuit 23, RF power sensing circuit detects the collection radiofrequency signal brought from directional coupler and to a certain proportion of magnitude of voltage of converting, and isolates through radio circuit and gives analog to digital conversion circuit; Analog to digital conversion circuit converts the magnitude of voltage that collects to data again, and data is delivered to the data/address bus that connects MCU get on; D/A converting circuit obtains data from the data/address bus that links to each other with MCU, and the proportional magnitude of voltage of this data transaction, this magnitude of voltage is through the grid voltage of the power tube in the radio circuit isolator control radio-frequency power amplifier.
More specifically, power amplification circuit 22 comprises power amplifier and directional coupler, the input of its intermediate power amplifier connects signal input part 21, the output of power amplifier connects directional coupler, and power amplifier is connected with second RF isolator in the software and hardware compensating circuit 23 simultaneously, the input of the RF power sensing circuit in directional coupler and the software and hardware compensating circuit 23 is connected.
Wherein, the multiplication factor of the grid voltage control power amplifiers of the power amplifier in the power amplification circuit 22 is adjusted the gain of whole radio-frequency module.Directional coupler directly is connected the output of power amplification circuit, plays to be coupled out the part radiofrequency signal from primary link and to be used for sample detecting.
Further, the module monitors circuit 24 in the radio-frequency module structure of the present invention comprises MCU, crystal oscillator, RS-485 transducer and temperature sensor; The software program that compensation forms such as default gain, power are wherein arranged among the MCU is in order to finish software inquiry compensation form; Crystal oscillator is connected with reference clock pin among the MCU, and effect is the reference clock that work is provided to MCU; The RS-485 transducer is connected with receiving and transmitting signal line among the MCU, and effect is that the TTL/CMOS level signal of MCU is converted to RS-485 differential level signal.
The output of the analog to digital conversion circuit in the software and hardware compensating circuit 23 (being data terminal) links to each other with MCU in the above-mentioned module monitors circuit 24, and the other end is connected with temperature sensor in the module monitors circuit 24; The input of D/A converting circuit also links to each other with MCU in the described module monitors circuit.In the time of temperature sensor work, detected radio-frequency module temperature inside is converted to magnitude of voltage, and this magnitude of voltage is delivered to analog to digital conversion circuit, analog to digital conversion circuit converts this magnitude of voltage data to and delivers to MCU.So just finished the process of temperature acquisition.
During the work of this radio-frequency module, the temperature sensor in the module monitors circuit is gathered the radio-frequency module temperature inside in real time, and the temperature data that collects is delivered among the MCU; Software program operation among the MCU, this software program can be according to the Current Temperatures that collects, inquiry is stored in the gain compensation form in the program or calculates according to default formula/algorithm,, and the offset data that inquiry is obtained or calculates is delivered in the compensating circuit; D/A converting circuit obtains offset data from the data/address bus that links to each other with MCU, and this offset data converted to a certain proportion of magnitude of voltage, this magnitude of voltage is through the grid voltage of the power tube in the radio circuit isolator control radio-frequency power amplifier, and then play the effect of the multiplication factor of power controlling amplifier tube, thereby the linearity that realizes controlling the gain of whole radio-frequency module and adjusted radio-frequency module reduces radio-frequency module gain and linearity effect influenced by ambient temperature thereby reach; Simultaneously, when radio-frequency power detects, software program operation among the MCU, this software program can be according to the Current Temperatures that collects, inquiry is stored in the power back-off form in the program or calculates according to default formula/algorithm,, and the detected radio-frequency power value of the offset data correction that inquiry is obtained or calculates, reduce the effect influenced by ambient temperature of radio-frequency module power detection accuracy thereby reach.
Further, the monitoring mouth 26 of described radio-frequency module comprises the data connector that the pilot signal in the module monitors circuit 24 is connected to the control device of radio-frequency module periphery, and the RS-485 bus of exporting in this data connector and the module monitors circuit 28 is connected.The effect of data connector is that the pilot signal of monitoring module is delivered to peripheral control device by RS-485 bus 28.
Radio-frequency module provided by the invention mainly adopts the method for the controlled software and hardware combining of software and hardware compensating circuit and module monitors circuit to substitute pure hardware controls compensating circuit, the precision and the accuracy of the compensation of radio-frequency module have been improved, adopt the way of output of RS-485 bus simultaneously, because the RS-485 bus is the differential level mode, has eliminated the interference between the semaphore; And the module by signal amount has converted the data volume transmission to, has avoided the introducing of external interference signal, has strengthened the reliability and the anti-jamming capacity of radio-frequency module; And because radio-frequency module adopts the monitor mode of said structure, can adopt instrument debugging and tests automatically such as computer, improve the efficient of producing.
Above-described only is the better embodiment of the inventive method and device, and it describes comparatively concrete and detailed, can not therefore be interpreted as the restriction to claim of the present invention.Should be understood that; for the person of ordinary skill of the art; without departing from the inventive concept of the premise; in the scope of technical solution of the present invention; utilize the technology contents of above-mentioned announcement to make some changes or be modified to the equivalent embodiment of equivalent variations, these all belong to protection scope of the present invention.
Claims (9)
1, a kind of compensation method of RF module performance is characterized in that, the step of described compensation method is as follows:
(1), the module monitors circuit in the radio-frequency module is gathered the radio-frequency module temperature inside in real time, and a temperature data that collects is delivered in the processor of module monitors circuit;
(2), the operation of the software program in the described processor, this software program is according to the Current Temperatures that collects, inquiry is preset in the gain compensation form in the program or according to the formula/algorithm computation in the program of being stored in, and gain compensation data resultant inquiry or that calculate gained are delivered in the software and hardware compensating circuit;
Simultaneously, this software program can be according to the Current Temperatures that collects, and inquiry is stored in the power back-off form in the program or calculates according to the formula/algorithm in the program of being stored in, and obtains the power back-off data;
(3) the software and hardware compensating circuit obtains gain compensation data data, delivers to power amplification circuit after changing through the software and hardware compensating circuit, and then realizes the gain of the whole radio-frequency module of control and the linearity of adjustment radio-frequency module;
The power back-off data that obtain then in order to revise detected radio-frequency power value, reduce the effect influenced by ambient temperature of radio-frequency module power detection accuracy thereby reach.
2, compensation method according to claim 1 is characterized in that, the inquiry gain compensation form in the described step (2) or the concrete steps of computing formula/algorithm are as follows:
(a), after radio-frequency module starts, the processor pre-set programs is moved all initial values;
(b), the processor working procedure, the detection module temperature is obtained current temperature value;
(c), according to the temperature value that obtains, inquiry is left the compensation form in the program in advance in or is calculated according to the formula/algorithm in the program of being stored in, and obtains the corresponding compensation value;
(d), the offset that obtains is outputed to D/A converting circuit converts control voltage to, the gain of adjustment radio-frequency module.
3, the compensation method of a kind of RF module performance according to claim 1 and 2 is characterized in that, the inquiry power back-off form in the described step (2) or the step of computing formula/algorithm are as follows:
1., after radio-frequency module starts, the processor pre-set programs is moved all initial values;
2., the processor working procedure, detection module temperature, and obtain current temperature value;
3., according to the temperature value that obtains, inquiry is left the compensation form in the program in advance in or is calculated according to the formula/algorithm in the program of being stored in, and obtains the corresponding compensation value;
4., the radio-frequency power detected value that the current inquiry of offset correction that obtains is obtained.
4, a kind of improved radio-frequency module, comprise a radio shielding shell, be provided with power amplification circuit in this radio shielding housing, compensating circuit, power amplification circuit, compensating circuit is serially connected on the signal primary link in regular turn, described radio shielding housing is provided with the monitoring mouth of radio-frequency module outward, it is characterized in that: described compensating circuit is the software and hardware compensating circuit, also be provided with the module monitors circuit in the described radio shielding housing, between power amplification circuit and the software and hardware compensating circuit, be connected by signal monitoring cable respectively between software and hardware compensating circuit and the module monitors circuit, the module monitors circuit then mouthful is connected by the RS-485 bus with monitoring.
5, a kind of improved radio-frequency module according to claim 4 is characterized in that: described software and hardware compensating circuit comprises RF power sensing circuit, D/A converting circuit, analog to digital conversion circuit and first, second radio circuit isolator; Wherein the input of RF power sensing circuit connects described power amplification circuit, output links to each other with first RF isolator, first RF isolator also links to each other with the output of analog to digital conversion circuit simultaneously, and the output of analog to digital conversion circuit links to each other with the module monitors circuit; The input of D/A converting circuit links to each other with the module monitors circuit, and output links to each other with second RF isolator, and second RF isolator also connects described power amplification circuit.
6, according to claim 4 or 5 described a kind of improved radio-frequency modules, it is characterized in that: described module monitors circuit comprises CPU, crystal oscillator, RS-485 transducer and temperature sensor; Wherein crystal oscillator is connected with reference clock pin among the CPU, and the RS-485 transducer is connected with receiving and transmitting signal line among the CPU.
7, a kind of improved radio-frequency module according to claim 6 is characterized in that: the output of analog-digital conversion circuit as described links to each other with CPU in the described module monitors circuit, and the other end is connected with temperature sensor in the module monitors circuit; The input of described D/A converting circuit also links to each other with CPU in the described module monitors circuit.
8, a kind of improved radio-frequency module according to claim 7, it is characterized in that: the monitoring mouth of described radio-frequency module comprises data connector, and the RS-485 bus of exporting in this data connector and the module monitors circuit is connected.
9, according to claim 7 or 8 described a kind of improved radio-frequency modules, it is characterized in that: described power amplification circuit comprises power amplifier and directional coupler, the input of its intermediate power amplifier connects signal input part, the output of power amplifier connects directional coupler, and the while power amplifier is connected with second RF isolator, directional coupler is connected with the input of RF power sensing circuit.
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| CNA2008102104847A CN101350643A (en) | 2007-09-18 | 2008-08-15 | Method for compensating RF module performance and improved RF module |
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| CN108767423A (en) * | 2018-04-27 | 2018-11-06 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The expansible chip architecture of tile style TR component millimeter waves |
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| CN101945417A (en) * | 2010-06-28 | 2011-01-12 | 深圳市华为安捷信电气有限公司 | Method and device for computing gains of multiple receiving links/transmitting links |
| CN101945417B (en) * | 2010-06-28 | 2014-06-11 | 深圳市华为安捷信电气有限公司 | Method and device for computing gains of multiple receiving links/transmitting links |
| CN102355206A (en) * | 2011-08-01 | 2012-02-15 | 中兴通讯股份有限公司 | Power amplifier and gain compensation method for same |
| CN105048974A (en) * | 2014-04-17 | 2015-11-11 | 意法半导体公司 | Automatic gain and offset compensation for an electronic circuit |
| CN105404324A (en) * | 2015-11-26 | 2016-03-16 | 重庆晟初科技有限公司 | Temperature control method and system applied to specific electromagnetic spectrum therapeutic apparatus |
| CN106899361A (en) * | 2015-12-21 | 2017-06-27 | 北京信威通信技术股份有限公司 | Transmission power processing method, device, system and transmitting equipment |
| CN108767423A (en) * | 2018-04-27 | 2018-11-06 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | The expansible chip architecture of tile style TR component millimeter waves |
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