Phase detecting device based on indirect type micromechanical microwave power sensor

Abstract

The invention discloses a phase detecting device based on indirect type micromechanical microwave power sensor. The detecting device comprises an indirect micromechanical microwave power sensor, a power combiner and a digital phase shifter, wherein a referenced microwave signal (Vref) which is the same as a signal (Vx) to be detected in frequency is added to a first input port (10) of the power combiner, the signal (Vx) to be detected is added to an input port (7) of a phase shifter with digits adjustable and added to a second input port (11) of the power combiner after phase shifting through the digital phase shifter (8), the referenced microwave signal (Vref) and the signal (Vx) to be detected reach an output port (13) of the power combiner after vectorial resultant through the power generator (12), and then the referenced microwave signal (Vref) and the signal (Vx) to be detected are added to an input port (14) of the indirect type micromechanical microwave power sensor. According to the phase detecting device based on the indirect type micromechanical microwave power sensor, the aim of accurate detection of phases of the microwave signal is achieved.

Description

technical field [0001] The invention proposes a microwave phase detection device based on micro-electro-mechanical system (MEMS) technology, which belongs to the technical field of micro-electro-mechanical systems. Background technique [0002] In microwave technology research, microwave phase is an important parameter to characterize microwave signal characteristics. Phase detection devices are widely used in measuring the phase characteristics of devices and systems. The most widely used microwave phase detector is a Gilbert multiplier composed of field effect transistors. The disadvantage of this microwave phase sensor is that it uses Active devices, which bring non-negligible noise and power consumption, affect the accuracy of detection. Since the end of the last century, the generation and development of RF MEMS technology has made it possible to realize a microwave phase detection system with low noise and low power consumption. The present invention is a detection de...

AI Technical Summary

Problems solved by technology

Phase detection devices are widely used in measuring the phase characteristics of devices and systems. The most widely used microwave phase detector is a Gilbert multiplier composed of field effect transistors. The disadvantage of this microwave phase sensor is that it uses Active devices, which bring non-negligible noise and power consumption, affect the accuracy of detection

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