CN203968063U - A kind of rf gain compensation arrangement - Google Patents
A kind of rf gain compensation arrangement Download PDFInfo
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- CN203968063U CN203968063U CN201320804667.8U CN201320804667U CN203968063U CN 203968063 U CN203968063 U CN 203968063U CN 201320804667 U CN201320804667 U CN 201320804667U CN 203968063 U CN203968063 U CN 203968063U
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Abstract
The utility model belongs to radio-frequency technique field, and a kind of rf gain compensation arrangement of the utility model, comprising: Temperature Detector, power detector, controller, radio frequency attenuator; The output of described Temperature Detector is connected with the input of described controller, and the output of described power detector is connected with the input of described controller, and the output of described controller is connected with the input of described radio frequency attenuator.Compared with prior art, the utility model does not need artificial Real-Time Monitoring and record, even if rf gain changes with nonlinear temperature, rf gain temperature-compensating precision is also very high.
Description
Technical field
The utility model belongs to radio-frequency technique field, relates in particular to a kind of rf gain compensation arrangement.
Background technology
Along with the fast development of wireless communication technology, system requires also more and more higher to the operational environment of product, especially working temperature requirement, radio frequency products is in certain temperature range, system gain can increase or reduce with temperature, makes system output signal power unstable, affects the reliability of system.
In prior art, temperature compensation is hardware compensating method, and hardware compensating method is mainly carried out adjustment System gain by the attenuation characteristic of temperature compensation resistance, and its advantage is that circuit is simple, easily realize, shortcoming is that compensation precision is low, there will be overcompensation or undercompensation, makes system works unstable.
Utility model content
The purpose of this utility model is to provide a kind of rf gain compensation arrangement, to solve the low unsettled problem of system works that makes of temperature compensation compensation precision of the prior art.
A kind of rf gain compensation arrangement, comprising: Temperature Detector, power detector, controller and radio frequency attenuator;
The output of described Temperature Detector is connected with the input of described controller, the output of described power detector is connected with the input of described controller, the output of described controller is connected with the input of described radio frequency attenuator, described rf gain compensation arrangement also comprises digital to analog converter, and the input of described digital to analog converter connects the output of described controller.
Described power detector comprises: the first amplifier, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 6th electric capacity and the first diode;
The in-phase input end of described the first amplifier connects the first end of described the 5th resistance, the second end of described the 5th resistance connects the first end of described the 4th resistance, the negative electrode of the first end of described the 6th electric capacity and described the first diode, the second end of described the 4th resistance is connected altogether with the second end of described the 6th electric capacity, the first end of the 3rd resistance described in the anodic bonding of described the first diode, the second end ground connection of described the 3rd resistance, the anode tap of described the first diode is the input of described power detector, the inverting input of described the first amplifier connects the first end of described the 6th resistance and the first end of described the 7th resistance, the second end ground connection of described the 6th resistance, the second end of described the 7th resistance connects the first end of described the 8th resistance and the output of described the first amplifier, the second end ground connection of described the 8th resistance.
Described radio frequency attenuator comprises the first control chip, the second electric capacity and the 3rd electric capacity;
The tenth pin of described the first control chip is input, the 3rd pin of described the first control chip is output, the 5th pin of described the first control chip connects the first end of high level and described the 3rd electric capacity, the second end ground connection of described the 3rd electric capacity, described the first control chip the 7th pin connect the first end of the second electric capacity, the second end ground connection of described the second electric capacity, the first pin of described the first control chip, the second pin, the 4th pin, the 6th pin, the 8th pin, the 9th pin, the 11 pin, the 12 pin, the 13 pin, the 14 pin, the 15 pin and the 16 pin ground connection.
Described the first control chip is chip HMC973LP3E.
Described controller is chip ATMEGA128.
Described Temperature Detector is chip AD590.
A kind of rf gain compensation arrangement of the utility model embodiment compared with prior art, by controller according to temperature value and performance number control radio frequency attenuator output attenuatoin amount, simple in structure, and reduce cost of labor, do not need artificial Real-Time Monitoring and record, and different from temperature compensation resistance linear compensation, even if rf gain changes with nonlinear temperature, rf gain temperature-compensating precision is also very high.
brief description of the drawings
Fig. 1 is the embodiment schematic diagram of a kind of rf gain compensation arrangement of providing of the utility model embodiment;
Fig. 2 is another embodiment schematic diagram of a kind of rf gain compensation arrangement of providing of the utility model embodiment;
Fig. 3 is the embodiment circuit diagram of the digital to analog converter in a kind of rf gain compensation arrangement of providing of the utility model embodiment;
Fig. 4 is the embodiment circuit diagram of the power detector in a kind of rf gain compensation arrangement of providing of the utility model embodiment;
Fig. 5 is the embodiment circuit diagram of the radio frequency attenuator in a kind of rf gain compensation arrangement of providing of the utility model embodiment;
Fig. 6 is that frequency and the attenuation of the radio frequency attenuator in a kind of rf gain compensation arrangement of providing of the utility model embodiment is related to schematic diagram;
Fig. 7 is the embodiment circuit diagram of the controller in a kind of rf gain compensation arrangement of providing of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The embodiment of the present invention provides an a kind of embodiment of rf gain compensation arrangement, comprising: Temperature Detector 101, power detector 102, controller 103 and radio frequency attenuator 104;
The output of described Temperature Detector 101 is connected with the input of described controller 103, described Temperature Detector 101 detected temperatures and described temperature transition is become to analog voltage signal after send to described controller 103;
The output of described power detector 102 is connected with the input of described controller 103, described power detector 102 detection power and described power transfer is become to analog voltage signal after send to described controller 103;
The output of described controller 103 connects described radio frequency attenuator 104, and described controller 103 compares the temperature value of reception and performance number and preset value, and according to radio frequency attenuator output attenuatoin amount described in comparative result control.
The utility model embodiment provides another embodiment of a kind of rf gain compensation arrangement, refer to Fig. 2, described rf gain compensation arrangement also comprises digital to analog converter 105, the input of described digital to analog converter 105 connects the output of described controller 103, the output of described digital to analog converter 105 connects the input of described radio frequency attenuator 104, and the digital signal that described digital to analog converter 105 sends described controller 103 converts analog signal to and sends to described radio frequency attenuator 104.
Refer to Fig. 3, described digital to analog converter is preferably chip DAC5512, described digital to analog converter also comprises the 9th resistance R 9, the 7th capacitor C 7, the 8th capacitor C the 8 and the 11 capacitor C 11, the first pin of described chip DAC5512 connects high level, described the 7th first end of capacitor C 7 and the first end of described the 11 capacitor C 11, the second end of described the 7th capacitor C 7 and the second end ground connection of described the 11 capacitor C 11, the 8th pin of described chip DAC5512 connects the first end of described the 9th resistance R 9 and the first end of the 8th capacitor C 8, the second end ground connection of the second end of described the 9th resistance R 9 and the 8th capacitor C 8, the 8th pin of described chip DAC5512 is output.
Described Temperature Detector 101 is preferably temperature sensor AD 590, and described temperature sensor AD 590 temperature-measuring range is large, and between temperature range-55 DEG C～+ 150 DEG C, certainty of measurement is high, and nonlinearity erron is only ± 0.3 DEG C.
Refer to Fig. 4, described power detector 102 comprises: the first amplifier U3, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 6th capacitor C 6 and the first diode D1;
The in-phase input end of described the first amplifier U3 connects the first end of described the 5th resistance R 5, the second end of described the 5th resistance R 5 connects the first end of described the 4th resistance R 4, the negative electrode of the first end of described the 6th capacitor C 6 and described the first diode D1, the second end of described the 4th resistance R 4 is connected altogether with the second end of described the 6th capacitor C 6, the first end of the 3rd resistance R 3 described in the anodic bonding of described the first diode D1, the second end ground connection of described the 3rd resistance R 3, the anode tap of described the first diode D1 is the input of described power detector 102, the inverting input of described the first amplifier D1 connects the first end of described the 6th resistance R 6 and the first end of described the 7th resistance R 7, the second end ground connection of described the 6th resistance R 6, the second end of described the 7th resistance R 7 connects the first end of described the 8th resistance R 8 and the output of described the first amplifier U3, the second end ground connection of described the 8th resistance R 8.
Described the first diode D1 is power detection pipe, be preferably MP2052, described the first diode carries out power detection for the book frequency signal to input, described the 4th resistance R 4 and described the 6th capacitor C 6 shaping filters filter rectified signal, and described the first amplifier U3 amplifies rear output to rectified signal.
Refer to Fig. 5, described radio frequency attenuator 104 comprises the first control chip U1, the second capacitor C 2 and the 3rd capacitor C 3, the tenth pin of described the first control chip U1 is input, the U1 of described the first control chip the 3rd pin is output, the 5th pin of described the first control chip U1 connects the first end of high level and described the 3rd capacitor C 3, the second end ground connection of described the 3rd capacitor C 3, described the first control chip U1 the 7th pin connect the first end of the second capacitor C 2, the second end ground connection of described the second capacitor C 2, the first pin of described the first control chip U1, the second pin, the 4th pin, the 6th pin, the 8th pin, the 9th pin, the 11 pin, the 12 pin, the 13 pin, the 14 pin, the 15 pin and the 16 pin ground connection.
Described the first control chip in described radio frequency attenuator 104 is preferably chip HMC973LP3E, and the operating frequency range 0.5～6GHz of described control chip, wide attenuation range 26db, high linearity, decay are continuously.Its attenuation increases with controlling voltage rising, reduces, as shown in Figure 6 with the reduction of controlling voltage.
Described controller is chip ATMEGA128, its built-in 10 ADC in 8 tunnel.
Refer to Fig. 7, the 41st pin of described chip ATMEGA128 connects the output of described Temperature Detector, the 39th pin connects the output of described power detector, and the 42nd pin, the 44th pin, the 46th pin, the 47th pin and the 48th pin are connected respectively the 5th pin, the 6th pin, the 4th pin the 3rd pin and the 2nd pin of described digital to analog converter.
Lower mask body is introduced the specific works process of the utility model embodiment, described controller reads the temperature information of temperature monitoring and current performance number, compare with the reference power value at this temperature, generate corresponding digital signal, control analog-digital chip DAC8512 and generate analog voltage, thereby change the attenuation of rf attenuation unit HMC973, reach the object of temperature gain compensation.
A kind of rf gain compensation arrangement of the utility model embodiment compared with prior art, by controller according to temperature value and performance number control radio frequency attenuator output attenuatoin amount, simple in structure, and reduce cost of labor, do not need artificial Real-Time Monitoring and record, and different from temperature compensation resistance linear compensation, even if rf gain changes with nonlinear temperature, rf gain temperature-compensating precision is also very high.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model.For example, modules is just divided according to function logic, but is not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional module also, just for the ease of mutual differentiation, is not limited to protection range of the present utility model.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (7)
1. a rf gain compensation arrangement, is characterized in that, comprising: Temperature Detector, power detector, controller and radio frequency attenuator;
The output of described Temperature Detector is connected with the input of described controller, and the output of described power detector is connected with the input of described controller, and the output of described controller is connected with the input of described radio frequency attenuator.
2. rf gain compensation arrangement as claimed in claim 1, is characterized in that, also comprises digital to analog converter, and the input of described digital to analog converter connects the output of described controller, and the output of described digital to analog converter connects the input of described radio frequency attenuator.
3. rf gain compensation arrangement as claimed in claim 2, it is characterized in that, described power detector comprises: the first amplifier, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 6th electric capacity and the first diode;
The in-phase input end of described the first amplifier connects the first end of described the 5th resistance, the second end of described the 5th resistance connects the first end of described the 4th resistance, the negative electrode of the first end of described the 6th electric capacity and described the first diode, the second end of described the 4th resistance is connected altogether with the second end of described the 6th electric capacity, the first end of the 3rd resistance described in the anodic bonding of described the first diode, the second end ground connection of described the 3rd resistance, the anode tap of described the first diode is the input of described power detector, the inverting input of described the first amplifier connects the first end of described the 6th resistance and the first end of described the 7th resistance, the second end ground connection of described the 6th resistance, the second end of described the 7th resistance connects the first end of described the 8th resistance and the output of described the first amplifier, the second end ground connection of described the 8th resistance.
4. rf gain compensation arrangement as claimed in claim 2, is characterized in that, described radio frequency attenuator comprises the first control chip, the second electric capacity and the 3rd electric capacity;
The tenth pin of described the first control chip is input, the 3rd pin of described the first control chip is output, the 5th pin of described the first control chip connects the first end of high level and described the 3rd electric capacity, the second end ground connection of described the 3rd electric capacity, described the first control chip the 7th pin connect the first end of the second electric capacity, the second end ground connection of described the second electric capacity, the first pin of described the first control chip, the second pin, the 4th pin, the 6th pin, the 8th pin, the 9th pin, the 11 pin, the 12 pin, the 13 pin, the 14 pin, the 15 pin and the 16 pin ground connection.
5. rf gain compensation arrangement as claimed in claim 4, is characterized in that, described the first control chip is chip HMC973LP3E.
6. rf gain compensation arrangement as claimed in claim 2, is characterized in that, described controller is chip ATMEGA128.
7. rf gain compensation arrangement as claimed in claim 2, is characterized in that, described Temperature Detector is chip AD590.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320804667.8U CN203968063U (en) | 2013-12-09 | 2013-12-09 | A kind of rf gain compensation arrangement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320804667.8U CN203968063U (en) | 2013-12-09 | 2013-12-09 | A kind of rf gain compensation arrangement |
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| CN203968063U true CN203968063U (en) | 2014-11-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901751A (en) * | 2015-05-07 | 2015-09-09 | 深圳市鼎阳科技有限公司 | Temperature compensation method and device for radio frequency equipment |
| CN109217902A (en) * | 2017-06-29 | 2019-01-15 | 深圳市金溢科技股份有限公司 | Radio frequency attenuator control method, control device and reader based on temperature-compensating |
| CN112737618A (en) * | 2020-12-24 | 2021-04-30 | 深圳市鼎阳科技股份有限公司 | Temperature compensation method for radio frequency receiver |
-
2013
- 2013-12-09 CN CN201320804667.8U patent/CN203968063U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901751A (en) * | 2015-05-07 | 2015-09-09 | 深圳市鼎阳科技有限公司 | Temperature compensation method and device for radio frequency equipment |
| CN109217902A (en) * | 2017-06-29 | 2019-01-15 | 深圳市金溢科技股份有限公司 | Radio frequency attenuator control method, control device and reader based on temperature-compensating |
| CN109217902B (en) * | 2017-06-29 | 2021-11-09 | 深圳市金溢科技股份有限公司 | Radio frequency attenuator control method and device based on temperature compensation and reader-writer |
| CN112737618A (en) * | 2020-12-24 | 2021-04-30 | 深圳市鼎阳科技股份有限公司 | Temperature compensation method for radio frequency receiver |
| CN112737618B (en) * | 2020-12-24 | 2022-04-12 | 深圳市鼎阳科技股份有限公司 | Temperature compensation method for radio frequency receiver |
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Granted publication date: 20141126 |
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