CN216649671U - Millimeter wave transmitting power compensation device - Google Patents
Millimeter wave transmitting power compensation device Download PDFInfo
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- CN216649671U CN216649671U CN202220206259.1U CN202220206259U CN216649671U CN 216649671 U CN216649671 U CN 216649671U CN 202220206259 U CN202220206259 U CN 202220206259U CN 216649671 U CN216649671 U CN 216649671U
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- millimeter wave
- power compensation
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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 utility model relates to a millimeter wave transmitting power compensation device, which comprises a millimeter wave transmitting link and a power detection link which are connected with each other; the millimeter wave transmitting link comprises a fixed gain amplifier, a wireless transceiving chip, a power amplifier, a power compensation network and a coupler; the signal is input from a power compensation network, the power compensation network is connected with the input ends of the fixed gain amplifier and the power amplifier, the output end of the fixed gain amplifier is connected with the input end of the wireless transceiving chip, and the output end of the wireless transceiving chip is connected with the power compensation network; the output end of the power amplifier is connected with the input end of the coupler, the output end of the coupler is connected with the antenna and the power detection link, and the output end of the power detection link is connected with the power compensation network. The coupler, the power detector, the MCU and the variable attenuator form a power compensation network, so that the flexibility is good; the output power can be flexibly configured and adjusted through the MCU.
Description
Technical Field
The utility model relates to the technical field of millimeter wave communication, in particular to a millimeter wave transmitting power compensation device.
Background
The output power of the millimeter wave transmitter is generally related to the difference between millimeter wave devices and the temperature, a power compensation circuit of a traditional millimeter wave transmitter system is mainly realized by using a gain temperature compensation attenuator, the flexibility of the mode is poor, the flexibility of power control is poor, and the problem of transmitting power caused by the difference between radio frequency devices is difficult to adjust.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a millimeter wave transmitting power compensation device, which solves the problems of transmitting power compensation of the traditional millimeter wave transmitter.
The purpose of the utility model is realized by the following technical scheme: a millimeter wave emission power compensation device comprises a millimeter wave emission link and a power detection link; the millimeter wave transmitting link and the power detection link are connected with each other; the millimeter wave transmitting link comprises a fixed gain amplifier, a wireless transceiving chip, a power amplifier, a power compensation network and a coupler; the signal is input from a power compensation network, the power compensation network is connected with the input ends of the fixed gain amplifier and the power amplifier, the output end of the fixed gain amplifier is connected with the input end of the wireless transceiver chip, and the output end of the wireless transceiver chip is connected with the power compensation network; the output end of the power amplifier is connected with the input end of the coupler, the output end of the coupler is connected with the antenna and the power detection link, and the output end of the power detection link is connected with the power compensation network.
The power compensation network comprises a variable attenuator and a variable gain amplifier; a signal is input from the variable attenuator, the output end of the variable attenuator is connected with the input end of the amplifier, and the output end of the variable gain amplifier is connected with the input end of the power amplifier; the output end of the power detection link is connected with the input ends of the variable attenuator and the variable gain amplifier.
The power detection link comprises a power detector, a differential operational amplifier module, a low-speed ADC, an MCU and a low-speed DAC; the output end of the power detector is connected with the input end of the differential operational amplifier module, the output end of the differential operational amplifier module is connected with the input end of the low-speed ADC, the output end of the low-speed ADC is connected with the input end of the MCU, and the output end of the MCU is connected with the input end of the low-speed DAC.
The output end of the coupler is connected with the input end of the power detector, the output end of the low-speed DAC is connected with the input end of the variable gain amplifier, and the output end of the MCU is further connected with the input end of the variable attenuator.
The differential operational amplifier module comprises an operational amplifier, resistors R1, R2, R3, R4 and a capacitor C1, and the resistance values of the four resistors meet R2 × R4 ═ R1 × R3; the resistors R2 and R3 are respectively connected to the first and second input terminals of the operational amplifier, and the power detection is connected with the first and second input terminals of the operational amplifier through the resistors R2 and R3; one end of the resistor R1 is connected with the first input end of the operational amplifier, and the other end is grounded; a resistor R4 and a capacitor C1 are connected between the second input terminal and the output terminal of the operational amplifier, and a resistor R4 is connected in parallel with the capacitor C1.
The utility model has the following advantages: a millimeter wave emission power compensation device is characterized in that a coupler, a power detector, an MCU and a variable attenuator form a power compensation network, so that the millimeter wave emission power compensation device is good in flexibility; the output power can be flexibly configured and adjusted through the MCU. The power detector adopts a double-diode power detection circuit structure, so that the change of the output voltage of the detection tube caused by the influence of temperature on the parameters of the diode power detection tube is compensated, and the influence of the temperature on the output voltage of the power detector is reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the detailed description of the embodiments of the present application provided below in connection with the appended drawings is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application. The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides a millimeter wave transmission power compensation device, aiming at the problem of transmission power compensation of the traditional millimeter wave transmitter in the technical field of millimeter wave communication, and having better flexibility and lower cost of implementation scheme for the problem of transmission power control and power difference caused by temperature change and radio frequency device difference.
The system specifically comprises a millimeter wave transmitting link and a power detection link; the millimeter wave transmitting chain consists of an amplifier, a wireless Transceiver chip (Transceiver), a Power Amplifier (PA), a coupler and a power compensation network; the power compensation network consists of a variable attenuator and a variable gain amplifier (AMP 1); the coupler is a power coupler.
Furthermore, the input end of the variable attenuator is connected with an input signal and mainly plays a role of attenuating the signal, so that the purpose of controlling the power of the output signal is achieved; the fixed gain amplifier is a millimeter wave intermediate frequency small signal fixed gain amplifier, the input end of the fixed gain amplifier is connected with the output end of the variable attenuator, and the fixed gain amplifier mainly plays a role in amplifying signals; the Transceiver input end is connected with the output end of the amplifier and provides the functions of frequency conversion and signal spectrum movement of signals; the input end of the variable gain amplifier AMP1 is connected with the output end of the Transceiver and plays a role of a millimeter wave signal amplifier; the input end of the PA is connected with the output end of the variable gain amplifier AMP1, and the millimeter wave signal power amplification effect is provided; the input end of the coupler is connected with the PA, the coupling end is coupled with partial energy and used for inputting the power detector, and the main function is that the partial energy is coupled and used for inputting the power detection link;
wherein the power coupler couples signal energy of node A; the power detection link comprises a power detector, a differential operational amplifier module, a low-speed ADC, an MCU processing module and a low-speed DAC; the power detector comprises a power/voltage conversion device for converting input power into voltage output, wherein the output voltage is proportional to the input power; the power detector has two paths of outputs, one path is input power conversion voltage output, and the other path is power detector temperature compensation voltage output;
further, the differential operational amplifier module comprises an operational amplifier, R1, R2, R3, R4 and C1; the differential operational amplifier module is used for isolating and amplifying voltage signals and removing detection voltage change caused by temperature; the low-speed ADC is used for digitizing the output voltage of the operational amplifier and sending the output voltage to the MCU; the MCU is used for comparing the acquired voltage with a target voltage; generating a corresponding control word to control the attenuation value of the variable attenuator and the gain of the variable gain amplifier AMP 1; the low-speed DAC is used for converting the MCU digital quantity control word into an analog quantity.
Furthermore, after two input ends of the differential operational amplifier are respectively connected with R3 and R2, the two input ends of the differential operational amplifier are connected with two outputs of the power detector, and the functions of the differential operational amplifier are as follows: 1. compensating for temperature-induced variations in the detector output voltage; 2. the low-speed ADC and the power detector are isolated to a certain extent; the resistances of the resistors R1, R2, R3 and R4 meet the requirement of R2·R4＝R1·R3(ii) a The capacitance C1 is to increase the stability of the amplifier, for example, R1 takes 10K ohms, R2 10K ohms, R3 takes 10K ohms, R4 takes 10K ohms and C1 takes 0.1 uF.
The power compensation process comprises the following steps: the signal of the node A is sent to a power detector through a coupler with the coupler coefficient of C, and the voltage of a node B of the power detector is in direct proportion to the sum of the voltage of the power of the node A and the temperature voltage; the voltage of the C node of the power detector is temperature compensation voltage; after the voltage of the node C and the voltage of the node B pass through the operational amplifier, the voltage which is proportional to the power of the node A is output at a node D; after the voltage of the node D is converted by the low-speed ADC, the voltage is sent to the MCU; the MCU changes the control words for controlling the variable attenuator and the variable gain amplifier according to the comparison between the target value and the target value, and adjusts the power of the node A, thereby controlling the output power and achieving the purpose of power compensation.
The working process of the utility model is as follows: starting millimeter wave transmitting power compensation, initializing a control word by the MCU, reading the value (node E) of the ADC by the MCU, and calculating abs (the value-target value of the ADC); determining whether the error value is less than a desired error value; if the calculated value is greater than the error value, the control word is changed until the calculated value is less than the error value; if the value is less than the error value, the ADC is read after a delay time, and the process is repeated.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the utility model is not limited to the precise form disclosed herein and is not to be construed as limited to the exclusion of other embodiments, and that various other combinations, modifications, and environments may be used and modifications may be made within the scope of the concepts described herein, either by the above teachings or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (5)
1. A millimeter wave transmission power compensation device is characterized in that: the device comprises a millimeter wave transmitting link and a power detection link; the millimeter wave transmitting link and the power detection link are connected with each other; the millimeter wave transmitting link comprises a fixed gain amplifier, a wireless transceiving chip, a power amplifier, a power compensation network and a coupler; the signal is input from a power compensation network, the power compensation network is connected with the input ends of the fixed gain amplifier and the power amplifier, the output end of the fixed gain amplifier is connected with the input end of the wireless transceiver chip, and the output end of the wireless transceiver chip is connected with the power compensation network; the output end of the power amplifier is connected with the input end of the coupler, the output end of the coupler is connected with the antenna and the power detection link, and the output end of the power detection link is connected with the power compensation network.
2. A millimeter wave transmission power compensation apparatus according to claim 1, wherein: the power compensation network comprises a variable attenuator and a variable gain amplifier; the signal is input from the variable attenuator, the output end of the variable attenuator is connected with the input end of the fixed gain amplifier, and the output end of the variable gain amplifier is connected with the input end of the power amplifier; the output end of the power detection link is connected with the input ends of the variable attenuator and the variable gain amplifier.
3. A millimeter wave transmission power compensation apparatus according to claim 2, wherein: the power detection link comprises a power detector, a differential operational amplifier module, a low-speed ADC, an MCU and a low-speed DAC; the output end of the power detector is connected with the input end of the differential operational amplifier module, the output end of the differential operational amplifier module is connected with the input end of the low-speed ADC, the output end of the low-speed ADC is connected with the input end of the MCU, and the output end of the MCU is connected with the input end of the low-speed DAC.
4. A millimeter wave transmission power compensation apparatus according to claim 3, wherein: the output end of the coupler is connected with the input end of the power detector, the output end of the low-speed DAC is connected with the input end of the variable gain amplifier, and the output end of the MCU is further connected with the input end of the variable attenuator.
5. A millimeter wave transmission power compensation apparatus according to claim 3, wherein: the differential operational amplifier module comprises an operational amplifier, resistors R1, R2, R3, R4 and a capacitor C1, and the resistance values of the four resistors meet R2 × R4 ═ R1 × R3; the resistors R2 and R3 are respectively connected to the first and second input terminals of the operational amplifier, and the power detection is connected with the first and second input terminals of the operational amplifier through the resistors R2 and R3; one end of the resistor R1 is connected with the first input end of the operational amplifier, and the other end is grounded; a resistor R4 and a capacitor C1 are connected between the second input terminal and the output terminal of the operational amplifier, and a resistor R4 is connected in parallel with the capacitor C1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220206259.1U CN216649671U (en) | 2022-01-25 | 2022-01-25 | Millimeter wave transmitting power compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220206259.1U CN216649671U (en) | 2022-01-25 | 2022-01-25 | Millimeter wave transmitting power compensation device |
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| CN216649671U true CN216649671U (en) | 2022-05-31 |
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| CN202220206259.1U Active CN216649671U (en) | 2022-01-25 | 2022-01-25 | Millimeter wave transmitting power compensation device |
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- 2022-01-25 CN CN202220206259.1U patent/CN216649671U/en active Active
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