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A method to improve the measurement ability of reflection parameters of pass-through power meter

A reflection parameter and measurement capability technology, applied in measurement devices, measuring electrical variables, instruments, etc., can solve the problems of different reflection parameter measurement capabilities, poor reflection measurement capability, etc., to improve reflection parameter measurement capabilities and improve reflection parameter measurement capabilities. Effect

Active Publication Date: 2021-10-15
CHINA ELECTRONIS TECH INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the influence of the directional hardware index of the directional coupler, the existing pass-through power meter has different reflection parameter measurement capabilities at different frequency points, and the reflection measurement capability is relatively poor.

Method used

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  • A method to improve the measurement ability of reflection parameters of pass-through power meter
  • A method to improve the measurement ability of reflection parameters of pass-through power meter

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Embodiment Construction

[0026] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0027] Such as figure 1 As shown, the schematic diagram of the directional coupler is a method to improve the measurement capability of the reflection parameters of the pass-through power meter. The pass-through power meter includes a directional coupler, and the directional coupler is provided with an input port A1, an output interface A2, and a coupling port A3 of the input port. and the coupling port A4 of the output interface. Coupling degree C of ports A3 and A4 13 [], C 24 [ ] Determined by directional coupler hardware, C 14 [ ] is the power leakage of ports A1 to A4, that is, the true isolation of the directional coupler. C 14 [ ] is the key to the directivity of the directional coupler, and the present invention reduces C by calculating 14 [ ] Effect on reflection measurements.

[0028] The specific measureme...

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Abstract

The invention discloses a method for improving the measurement capability of reflection parameters of a pass-through power meter, and specifically relates to the technical field of test parameters of a pass-through power meter. The measurement object in this method is the directional coupler of the pass-through power meter. The directional coupler is provided with an input port, an output interface, a coupling port of the input port, and a coupling port of the output interface. The coupling degree of the port and the coupled port of the input port is calculated by measuring the power value of the coupled port of the input port to obtain the input power of the input port; by measuring the power value of the coupled port of the output port, and deducting the coupling from the input port to the output port For the power leakage of the port, measure the power reflection of the output port according to the coupling degree of the output interface and the coupling port of the output interface, and the reflection coefficient of the DUT is Rho.

Description

technical field [0001] The invention relates to the technical field of parameter testing of a pass-through power meter, in particular to a method for improving the measurement capability of a pass-through power meter for reflection parameters. Background technique [0002] The through-type power meter can complete the measurement of reflection parameters such as reflection coefficient, return loss and standing wave ratio of the equipment under test under high-power working conditions. But the reflection parameter capability depends on the directivity of the directional coupler. [0003] The reflection parameters of the current through-type power meters are affected by the directivity of the directional coupler. For example, the short-wave pass-through power meter has the best directivity at 2MHz~30MHz, which is ≥35dB. Its reflection parameter measurement capability is: (1) reflection coefficient is 0.04~1; (2) return loss is 0dB~28dB; (3) ) The standing wave ratio is ≥1.08...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 李金山苏发徐达旺李强冷朋刘元商陈兴腾
Owner CHINA ELECTRONIS TECH INSTR CO LTD