Pass-type power measuring device

Abstract

A pass-type power measuring device comprises a radio frequency input port and a radio frequency output port which are respectively used for connecting a microwave device and a load; an input port of the coupler is connected with the radio frequency input port, and a straight-through port of the coupler is connected with the radio frequency output port; the input ends of the two detectors are respectively connected with the first coupling port and the second coupling port of the coupler; the detection module is used for receiving signals from the output ends of the two detectors and detecting power according to the received signals, and the detection module is connected with the output ends of the two detectors; and the communication interface is used for sending a detection result of the detection module to user equipment, and the communication interface is connected with the detection module. The measuring device is an integrated device, only the measuring device needs to be connected between a microwave device and a load during measurement, measurement is convenient, factors influencing measurement accuracy can be reduced, and measurement precision is high.

Description

Technical Field

[0001] This utility model belongs to the field of online power measurement technology, and in particular relates to a through-type power measurement device. Background Technology

[0002] In the maintenance, inspection, calibration, and debugging of microwave equipment, high-power measurement is a critical step in ensuring equipment performance. Currently, there are two common methods for high-power measurement:

[0003] One method involves connecting a high-power attenuator to the microwave equipment and then connecting the attenuator to an absorption power meter for measurement. Another method involves using a coupler to connect the attenuator to the microwave equipment and connecting the absorption power meter to the coupling end of the coupler for measurement. It can be seen that both methods require connecting the separate measurement components first, which is inconvenient for measurement. In particular, high-power attenuators are usually large in size, making them even more inconvenient to carry and use on site. Furthermore, since multiple separate measurement components are required for measurement, there are many factors that affect the accuracy of the measurement (such as connection errors between the interfaces of the various measurement components, etc.). Utility Model Content

[0004] Based on this, and in response to the aforementioned technical problems, a through-type power measurement device is provided.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A through-type power measuring device, characterized in that it comprises:

[0007] Radio frequency input and output ports are used to connect microwave equipment and loads, respectively;

[0008] A coupler, wherein the input port of the coupler is connected to the RF input port, and the through port of the coupler is connected to the RF output port;

[0009] Two detectors, the input terminals of which are respectively connected to the first coupling port and the second coupling port of the coupler;

[0010] A detection module for receiving signals from the outputs of the two detectors and detecting power based on the received signals, the detection module being connected to the outputs of the two detectors;

[0011] The communication interface is used to send the detection results of the detection module to the user equipment, and the communication interface is connected to the detection module.

[0012] This utility model has a simple structure and small size. It is an integrated device. During measurement, it does not require connecting multiple measuring components to the microwave equipment as in the prior art. Instead, it only needs to be connected between the microwave equipment and the load to realize through-type power measurement. The measurement is convenient and can also reduce factors that affect the accuracy of the measurement, resulting in high measurement precision. Attached Figure Description

[0013] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0014] Figure 1 A schematic diagram of the structure of a through-type power measuring device provided in an embodiment of this utility model;

[0015] Figure 2 A schematic diagram of a through-type power measuring device provided for an embodiment of this utility model. Detailed Implementation

[0016] The embodiments of this utility model will be described below with reference to the accompanying drawings. It should be noted that the embodiments described in this specification are not exhaustive and do not represent the only embodiments of this utility model. The following corresponding embodiments are only for clearly illustrating the utility model content of this patent and are not intended to limit its implementation. For those skilled in the art, different variations and modifications can be made based on the described embodiments. Any obvious variations or modifications that fall within the technical concept and utility model content of this utility model are also within the protection scope of this utility model.

[0017] like Figure 1 and Figure 2 As shown, this application provides a through-type power measurement device, including a housing 110, an RF input port 120, an RF output port 130, a coupler 140, two processing modules 150, two detectors 160, a detection module 170, and a communication interface 180.

[0018] The housing 110 has a mounting cavity, in which a circuit board 111 is mounted by bolts.

[0019] like Figure 1 As shown, the RF input port 120 and the RF output port 130 are located on the left and right sides of the housing 110, and are used to connect the microwave device 2 and the load 3 respectively during measurement.

[0020] Coupler 140, processing module 150, detector 160, detection module 170 and communication interface 180 are all mounted on circuit board 111.

[0021] like Figure 2As shown, the coupler 140 has an input port, a through port, a first coupling port, and a second coupling port. The input port is connected to the RF input port 120, the through port is connected to the RF output port 130, and the first coupling port and the second coupling port are connected to two processing modules 150 in a one-to-one correspondence.

[0022] Coupler 140 can be selected from commercially available couplers for the corresponding frequency and power according to the microwave device to be measured.

[0023] During measurement, the signal output from the power output port of microwave device 2 enters coupler 140 from the input port via RF input port 120, and is output to load 3 from the through port and RF output port 130 via the coaxial line inside coupler 140. At the same time, coupler 140 samples the signal input from the input port and the load reflection signal input from the through port, and outputs them to two processing modules 150 from the first coupling port and the second coupling port, respectively.

[0024] The two processing modules 150 are used to filter and adjust the output signals of the first coupling port and the second coupling port to the effective detection dynamic range of the detection module 170, respectively. Filtering is to filter out useless signals and prevent them from affecting the detection accuracy. Adjusting to the effective detection dynamic range is to ensure the accuracy of power measurement.

[0025] The two processing modules 150 are connected to the two detectors 160 in a one-to-one correspondence, realizing the indirect connection between the input terminals of the two detectors 160 and the first coupling port and the second coupling port, respectively.

[0026] The processing module 150 includes an attenuator 151 and a filter 152. The attenuator 151 is connected to the corresponding coupling port and the filter 152, and the filter 152 is connected to the corresponding detector 160. The attenuator 151 first adjusts the signal output from the coupling port to the effective power detection dynamic range, and then the filter 152 performs filtering. The attenuator 151 can attenuate noise and harmonics in the signal first, resulting in higher measurement accuracy. Alternatively, the filter 152 can be connected to the corresponding coupling port and the attenuator 151, or the attenuator 151 can be connected to the corresponding detector 160. That is, the filter 152 performs filtering first, and then the attenuator 151 adjusts the signal.

[0027] The detection module 170 is connected to the output terminals of the two detectors 160. It receives voltage signals from the output terminals of the two detectors 160 and determines the forward and reverse power of the microwave equipment based on the received voltage signals. In this embodiment, the detection module 170 uses a microcontroller. It receives voltage signals from the output terminals of the two detectors 160 through two ADC ports. After AD conversion, it finds the corresponding forward and reverse power from a voltage-power table based on the two converted voltage values. The effective detection dynamic range refers to the effective detection dynamic range of the two ADC ports.

[0028] The communication interface 180 is connected to the detection module 170 and is used to send the detection results of the detection module 170 to the user equipment. The user equipment can be a computer or other electronic devices that can communicate with the communication interface 180. In this embodiment, the communication interface 180 adopts a USB communication interface.

[0029] In this embodiment, the detector 160 is an ADL5513, the microcontroller is an STM32F302, the attenuator 151 is an SHX-5020dB, and the filter 152 is an LC combination.

[0030] The detector 160 is powered by a reference power supply. To improve measurement accuracy, the power supply of the detector 160 must be stable and clean. Otherwise, power fluctuations will affect the output of the detector and thus the measurement accuracy. The power supply above the reference power supply is the power supply of the input terminal after being processed by an LDO, and then after being filtered by another power supply before being supplied to the detector 160. Therefore, the power supply of the detector 160 is obtained through two stages of power supply processing, which is both stable and clean.

[0031] As can be seen from the above, the through-type power measuring device provided in this application embodiment has a simple structure and small size. It is an integrated device, and during measurement, it is not necessary to connect multiple measuring components on the microwave equipment as in the prior art. Instead, it is only necessary to connect this measuring device between the microwave equipment and the load to realize through-type power measurement. The measurement is convenient and can also reduce factors that affect the accuracy of the measurement, resulting in high measurement precision.

[0032] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A through-type power measuring device, characterized in that, include: Radio frequency input and output ports are used to connect microwave equipment and loads, respectively; A coupler, wherein the input port of the coupler is connected to the RF input port, and the through port of the coupler is connected to the RF output port; Two detectors, the input terminals of which are respectively connected to the first coupling port and the second coupling port of the coupler; A detection module for receiving signals from the outputs of the two detectors and detecting power based on the received signals, the detection module being connected to the outputs of the two detectors; The communication interface is used to send the detection results of the detection module to the user equipment, and the communication interface is connected to the detection module.

2. The through-type power measuring device according to claim 1, characterized in that, It also includes two processing modules for filtering and adjusting the output signals of the first coupling port and the second coupling port to the effective detection dynamic range of the detection module, respectively. The first coupling port and the second coupling port are respectively connected to the input terminal of the corresponding detector through the two processing modules.

3. The through-type power measuring device according to claim 2, characterized in that, The processing module includes an attenuator and a filter. The attenuator is connected to a corresponding coupling port and a filter, and the filter is connected to a corresponding detector.

4. The through-type power measuring device according to claim 2, characterized in that, The processing module includes an attenuator and a filter. The filter is connected to a corresponding coupling port and an attenuator, and the attenuator is connected to a corresponding detector.

5. A through-type power measuring device according to claim 3 or 4, characterized in that, The detection module is a microcontroller, and the communication interface is a USB communication interface.

6. A through-type power measuring device according to claim 5, characterized in that, The detector is an ADL5513 detector, the microcontroller is an STM32F302 microcontroller, the attenuator is an SHX-5020dB attenuator, and the filter is an LC combination.

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