Waveguide power meter probe

Abstract

The objective of the utility model is to provide a waveguide power meter probe, comprising a waveguide radio frequency input port and a casing, the left end of the inner wall of the casing is provided with the waveguide radio frequency input port, the right end of the inner wall of the waveguide radio frequency input port is provided with an aviation plug, a diode detector is clamped in the casing, and the waveguide radio frequency input port is connected with the waveguide radio frequency input port. An MCU data acquisition board is fixedly connected inside the casing, a waveguide radio frequency input port of the waveguide power meter is used for receiving a measured signal, the measured signal outputs voltage through a diode detector, the output of the diode detector is connected with the MCU data acquisition board, and a numerical value is monitored and recorded through the voltage received by the data acquisition board. And the detection value is transmitted to the upper computer software of the display terminal through the aviation plug connector for calibration and checking. The device has the advantages of being good in impedance matching, simple in structure, convenient to manufacture, easy to operate and carry and the like, and is suitable for accurate power measurement of high-frequency-band microwave signals.

Description

Technical Field

[0001] This utility model relates to the field of microwave measurement technology, specifically to a waveguide power meter probe for measuring microwave signal power. Background Technology

[0002] In fields such as microwave communication, radar, and satellite communication, accurate measurement of microwave signal power is crucial. Traditional power measurement methods typically employ coaxial power meters, but in high-frequency bands such as millimeter waves, the losses of coaxial structures are significant, making it difficult to meet the high-precision measurement requirements. Waveguide structures, due to their low loss and high power capacity, offer significant advantages in high-frequency power measurement. However, existing power meter probes suffer from the following problems:

[0003] 1. Large size: The display device and the detection probe are bound together, which is not conducive to carrying and adapting to various testing environments.

[0004] 2. Inconsistent interfaces: Additional adapters are required when measuring waveguide interface devices, resulting in large errors.

[0005] 3. Complex structure: difficult to manufacture and costly.

[0006] To address the aforementioned problems, this invention proposes a novel waveguide power meter probe. Utility Model Content

[0007] The purpose of this invention is to provide a novel waveguide power meter probe to solve the problems mentioned above.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A waveguide power meter probe includes a waveguide RF input port and a housing. The waveguide RF input port is located on the left end of the inner wall of the housing, and an air-mounted connector is located on the right end of the inner wall of the waveguide RF input port. A diode detector is snapped into the inside of the housing, and an MCU data acquisition board is fixedly connected inside the housing. The waveguide RF input port of the waveguide power meter is used to receive the measured signal. The measured signal outputs a voltage after passing through the diode detector. The output of the diode detector is connected to the MCU data acquisition board. The voltage received by the data acquisition board is monitored and recorded, and the detected value is transmitted to the host computer software on the display terminal for calibration and viewing via the air-mounted connector.

[0010] Furthermore, the waveguide power meter probe described herein uses a WR-10 (3.76mm x 1.88mm) rectangular waveguide as its waveguide RF input port.

[0011] Further, the waveguide power meter probe, the diode detector adopts the detector with the frequency of W wave band (75GHz-110GHz), and the detection sensitivity is 2000mV / mW.

[0012] Further, the waveguide power meter probe, the diode detector is connected with the MCU data acquisition board through an SMA-to-IPEX connector connecting line.

[0013] Further, the waveguide power meter probe, the aviation plug connector adopts a 9mm-diameter 4-hole aviation plug connector.

[0014] Further, the waveguide power meter probe, the shell is an aluminum alloy sandblasted material with a length of 85mm, a width of 43mm and a height of 30mm.

[0015] The utility model discloses a test principle:

[0016] 1.The diode detection power meter is an instrument for measuring radio frequency (RF) or microwave signal power, and its core principle is to convert high-frequency signals into direct current or low-frequency signals by using the nonlinear characteristics of diodes, thereby indirectly measuring the power of input signals. The high-frequency signal input enters the diode detector through the waveguide input port, the diode detector rectifies the input signal and converts the high-frequency signal into a pulsating direct current signal, the diode detector internally integrates a low-pass filter to filter out high-frequency components and retain direct current components, the direct current signal is output from the diode detector output port to the MCU data acquisition board, the corresponding direct current voltage is collected through the acquisition board, and finally the power value of the input signal is indirectly calibrated and calculated through the host computer software of the display terminal.

[0017] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0018] 1.The utility model discloses a simple and compact structure, provides space utilization rate through the compact shell structure design, thereby guaranteeing the premise of detection performance, can minimize the volume as far as possible, easy to operate and carry, and can connect a variety of conventional equipment through the aviation plug connector. Compared with the structure that the display device and the detection probe are bound together in the prior art, not only the volume is large, but also it is not easy to adapt to some narrow environment for measurement. The compact waveguide power meter and the aviation plug connector can improve the adaptability.

[0019] 2.The utility model discloses a diode detector, and the detection sensitivity reaches 2000mV / mV, which is more conducive to small signal detection. DRAWINGS

[0020] Other features, objects and advantages of the utility model will become more apparent through reading the following detailed description of the non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 It is a structural schematic view of the utility model;

[0022] Figure 2 It is a schematic view of waveguide input port and aviation plug joint of the utility model;

[0023] Figure 3 It is the whole working principle view of the utility model.

[0024] Among them: 1, waveguide radio frequency input port;101, the casing;2, aviation plug joint;3, diode detector;4, MCU data acquisition board. DETAILED DESCRIPTION

[0025] The embodiments of the utility model are described below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0026] The embodiment: a waveguide power meter probe, including waveguide radio frequency input port 1 and casing 101, the inner wall left end of the casing 101 is provided with waveguide radio frequency input port 1, the inner wall right end of the waveguide radio frequency input port 1 is provided with aviation plug joint 2, the inside of the casing 101 is clamped with diode detector 3, the inside of the casing 101 is fixedly connected with MCU data acquisition board 4, the waveguide power meter waveguide radio frequency input port 1 is used to receive the measured signal, the measured signal passes through diode detector 3 and outputs voltage, diode detector 3 is connected with MCU data acquisition board 4, the voltage received by data acquisition board 4 is detected and recorded, and the detected value is transmitted to the host computer software of display terminal through aviation plug joint 2 and is calculated and viewed.

[0027] Embodiment 1: the principle of the embodiment: first, the embodiment discloses a diode detection waveguide power meter, including waveguide radio frequency input port 1, diode detector 3, MCU data acquisition board 4 and aviation plug joint 2 arranged in the casing 101, the radio frequency input port adopts WR-10 standard rectangular waveguide, the power test is carried out through the connection of W wave band measured member and waveguide input port 1, the measured power is sent to diode detector 3 through waveguide input port 1, the diode detector rectifies the input signal, converts the high-frequency signal into pulsating direct-current signal, and the direct-current signal is sent to MCU data acquisition board 4 through the connecting line of SMA to IPEX connector, MCU data acquisition board 4 detects and records the direct-current signal, aviation plug joint 2 is connected with the host computer software of display terminal, the host computer software calculates the detected signal, and the detected power value is displayed on the screen.

[0028] First, the measured power device is powered off, second, the utility model is connected through the navigation plug connector 2 display terminal and open host computer software, identify to this waveguide power meter, then connect this wave power meter to the measured power device output interface or system, then the measured power device is powered on, after modulating the measured power device frequency and power, read the measured power value, complete the measurement.

[0029] It is worth mentioning that the waveguide input port 1, the diode detector 3, the MCU data acquisition board 4 and the navigation plug connector 2 used in the embodiment are prior art, which are well-known technical means to those skilled in the art, and mature products can be directly purchased on the market, so they will not be described in detail here.

[0030] In order to obtain accurate measurement results, a large amount of standard source calibration data is pre-stored in the MCU data acquisition board 4, which ensures accurate measurement results in the measurable frequency range and power range, the standard source is at a frequency of 75GHz to 110GHz and a power of-30dBm to +20dBm, the frequency steps are 10MHz, the power steps are 1dB, and the calibration is performed multiple times, and the calibration values are stored in the MCU data acquisition board 4, then the power test is performed on any measured part, and the test can be completed directly by connection without additional calibration.

[0031] In the embodiment, the waveguide frequency input port 1 adopts a WR-103.76mm x 1.88mm specification rectangular waveguide, and other parts of the embodiment are the same as those of the above-mentioned embodiment, and will not be described in detail.

[0032] In the embodiment, the diode detector 3 adopts a detector with a frequency of W band 75GHz-110GHz and a detection sensitivity of 2000mV / mW, and other parts of the embodiment are the same as those of the above-mentioned embodiment, and will not be described in detail.

[0033] In the embodiment, the diode detector 3 is connected to the MCU data acquisition board 4 through an SMA to IPEX connector connection line, and other parts of the embodiment are the same as those of the above-mentioned embodiment, and will not be described in detail.

[0034] In the embodiment, the shell 101 is an aluminum alloy sandblasted material with a length of 85mm, a width of 43mm and a height of 30mm.

[0035] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and deformations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A waveguide power meter probe, comprising a waveguide RF input port (1) and a housing (101), wherein the waveguide RF input port (1) is provided at the left end of the inner wall of the housing (101), and an air-mounted connector (2) is provided at the right end of the inner wall of the waveguide RF input port (1), a diode detector (3) is snapped into the inside of the housing (101), and an MCU data acquisition board (4) is fixedly connected inside the housing (101), characterized in that: The waveguide power meter waveguide radio frequency input port (1) is used for receiving the measured signal, the measured signal passes through the diode detector (3) to output voltage, the diode detector (3) is connected with the MCU data acquisition board (4), the voltage received by the data acquisition board (4) is detected and recorded, and the detected value is transmitted to the host computer software through the aviation plug connector (2) to calibrate and view.

2. A waveguide power meter probe according to claim 1, characterised in that: The waveguide radio frequency input port (1) adopts WR-10 (3.76mm x 1.88mm) specification rectangular waveguide.

3. A waveguide power meter probe according to claim 1, characterized in that: The diode detector (3) adopts a detector with a frequency of W wave band (75GHz-110GHz) and a detection sensitivity of 2000mV / mW.

4. The waveguide power meter probe of claim 1, wherein: The diode detector (3) is connected with the MCU data acquisition board (4) and is connected by using SMA to IPEX connector.

5. The waveguide power meter probe of claim 1, wherein: The aviation plug connector (2) adopts a 9mm diameter, 4-hole aviation plug connector.

6. The waveguide power meter probe of claim 1, wherein: The shell (101) is an aluminum alloy sandblasting material with a length of 85mm, a width of 43mm and a height of 30mm.

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