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Micro-electromechanical microwave loss compensating microwave power detector

A technology of microelectronic machinery and microwave power, which is applied in the direction of electric power measurement, measuring device, generator/motor, etc. by thermal method, which can solve the problems affecting the accuracy of detection and the reduction of power to be measured without considering microwave loss, etc. To achieve the effect of improving the accuracy

Inactive Publication Date: 2011-09-07
SOUTHEAST UNIV
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Problems solved by technology

The disadvantage of traditional microwave power sensors is that when calculating the microwave power to be measured through the output DC voltage, the reduction of the power to be measured caused by microwave loss is not considered, which affects the accuracy of detection

Method used

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  • Micro-electromechanical microwave loss compensating microwave power detector
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  • Micro-electromechanical microwave loss compensating microwave power detector

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Embodiment Construction

[0019] The MEMS microwave loss compensation type microwave power detection device of the present invention utilizes three completely identical power sensors and is supplemented by a power divider, a differential amplifier, and an automatic gain controller (AGC):

[0020] The microwave signal to be tested is added to the input terminal 7 of the power divider, and two completely identical microwave signals to be tested are generated at the first output terminal 8 of the power divider and the second output terminal 9 of the power divider, that is, the first one to be tested Microwave power P 1 and the second microwave power P to be measured 2 .

[0021] The microwave power sensor consists of three identical power sensors a, b and c. The output of power sensor a and power sensor b is connected to the two input terminals of the differential amplifier, and then the output of the differential amplifier is connected to the control terminal of AGC, thus forming the microwave power lo...

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Abstract

A micro-electromechanical microwave loss compensating microwave power detector is a microwave power detector using identical power sensors to simultaneously detect DC power and microwave power, and comprising three identical power sensors, a power allotter (16), a difference amplifier (17), and an automatic gain controller (18); the three identical power sensors are a first power sensor (a), a second power sensor (b), and a third power sensor (c); and the structure is based on MEMS technology, thus having the fundamental advantages of MEMS such as light weight, low power consumption and the like. The series of advantages is superior to a traditional microwave power detector, thus having excellent research and application values.

Description

technical field [0001] The invention provides a microwave power 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 power is an important parameter to characterize microwave signal characteristics. In the research of each link of microwave signal generation, transmission and reception, the detection of microwave power is essential. The most common microwave power detector is a microwave power sensor based on the principle of thermoelectric conversion. It converts the microwave signal into heat through the load resistance, and then uses the Seebeck effect of the thermopile to convert the heat into direct current proportional to the microwave power to be measured. voltage output. The disadvantage of traditional microwave power sensors is that when calculating the microwave power to be measured through the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/04G01R21/02B81B7/02
Inventor 廖小平王德波
Owner SOUTHEAST UNIV
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