Attenuation measurement device for waveguide system

A technology of attenuation measurement and attenuation device, applied in the direction of transmission system, transmission monitoring, electrical components, etc., to achieve the effect of small signal receiving ability, good stability and repeatability

Inactive Publication Date: 2014-03-19
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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  • Abstract
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an attenuation measurement device for waveguide systems to solve the problem of ac

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  • Attenuation measurement device for waveguide system
  • Attenuation measurement device for waveguide system
  • Attenuation measurement device for waveguide system

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Example Embodiment

[0025] The present invention will be further described below based on the drawings. Taking an attenuation measuring device with a frequency measurement range of 50 GHz to 110 GHz as an example, the structure and working principle of the attenuation measuring device of the waveguide system according to the present invention will be described in detail below.

[0026] figure 1 An attenuation measurement device for a waveguide system is shown. The attenuation measurement device includes an output terminal A1 of a radio frequency signal, an input terminal A2 of an attenuation signal, a local oscillator signal source, a first millimeter wave frequency multiplication module, a radio frequency signal source, and a second Two-millimeter wave frequency doubling module, first isolation attenuator, tested attenuator, second isolation attenuator, mixer, frequency divider, amplifying filter module, known attenuation devices such as semi-automatic inductive voltage divider and lock-in amplifier...

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Abstract

The invention relates to an attenuation measurement device for a waveguide system. The attenuation measurement device comprises a radio-frequency signal output end, an attenuation signal input end, a radio-frequency signal source, a local oscillator signal source, a frequency divider, a frequency mixer, a semi-automatic inductive voltage divider and a phase-locked amplifier, the radio-frequency signal source generates a radio-frequency signal and a time-based signal, the radio-frequency signal is coupled to a radio-frequency signal input end, the local oscillator signal source takes the time-based radio-frequency signal as a reference signal and outputs a local oscillator signal, the radio-frequency signal and the local oscillator signal share a time base, the frequency divider is used for dividing the frequency for the time-based signal, the frequency mixer is used for mixing the frequency of the local oscillator signal and the frequency of the inputted attenuation signal, the semi-automatic inductive voltage divider is used for dividing the voltage of a frequency mixing signal outputted by the frequency mixer, and the phase-locked amplifier takes a frequency dividing signal outputted by the frequency divider as a reference signal and detects an output signal of the semi-automatic inductive voltage divider. The attenuation measurement device can measure a 50GHz-110GHz waveguide attenuation standard device, and has small signal receiving capability and fine stability and repeatability.

Description

technical field [0001] The invention relates to an attenuation measuring device, in particular to a 50GHz-110GHz attenuation measuring device used in a waveguide system. Background technique [0002] Microwave radio attenuation is a very important and popular parameter in the radio field, and both at home and abroad attach great importance to the establishment of attenuation parameter standards. For example, the attenuation benchmark established by the National Institute of Metrology has a frequency range of 30MHz to 40GHz. At present, the highest measurement standard of national defense attenuation is established in two frequency bands of 1MHz-50GHz and 26.5GHz-40GHz respectively, among which the highest standard of attenuation of 26.5GHz-40GHz is the 8mm waveguide system. As for the 50GHz-110GHz attenuation standard of the waveguide system, there is no such standard yet, and the standard coverage frequency band is not complete, and the corresponding frequency conversion s...

Claims

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Application Information

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IPC IPC(8): H04B17/00
Inventor 徐宝利李放张国华高春彦张玥
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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