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Novel microwave detector with high sensitivity

A microwave detector, high-sensitivity technology, applied in instruments, measuring devices, measuring electric power, etc., can solve the problem of low signal-to-noise ratio, and achieve the effects of small size, easy mass production, and simple structure

Active Publication Date: 2016-01-06
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Application Information

AI Technical Summary

Problems solved by technology

Currently, high-sensitivity microwave detection can be achieved using superconducting bolometers, but such instruments are limited to work at low temperatures
Utilizes Schottky diodes for signal detection, high frequency operation possible at room temperature, but low signal-to-noise ratio

Method used

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  • Novel microwave detector with high sensitivity
  • Novel microwave detector with high sensitivity

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Embodiment Construction

[0018] In view of the defects in the prior art, in order to obtain a high-sensitivity microwave detector, the inventors of this case have designed a magnetic multilayer film structure based on perpendicular magnetocrystalline anisotropy and spin moment diode effect after long-term research and extensive practice. (spintorquediodeeffect), which guides the microwave current signal to a magnetic multilayer film structure with perpendicular magnetocrystalline anisotropy through the signal acquisition module. The membrane structure can convert the microwave power signal into a DC voltage signal, and then through the signal detection module, the converted parameter change that can represent the power change is adjusted, and the output signal is presented by the signal display module. The purpose of the tester interaction. A microwave detector based on this structure achieves a sensitivity of over 70000mV / mW.

[0019] In an exemplary embodiment of the invention, see figure 1 , the ...

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Abstract

The present invention discloses a novel microwave detector with high sensitivity. The novel microwave detector comprises a signal acquisition module, a rectifier module, a signal detection module and a signal display module, which are connected in turn, wherein the rectifier module comprises a fixed magnetic layer with in-plane balanced magnetization, a non-magnetic isolating layer formed on the fixed magnetic layer, and a magnetism free layer formed on the non-magnetic isolating layer and having vertical magnetocrystalline anisotropy. The microwave detector provided by the present invention has the characteristics of being small in size, high in sensitivity and simple in structure; and the preparation technology is compatibility with the prior art, easy for mass production, and widely applicable to fields such as high-speed multichannel communication, week signal detection and microwave power transmission.

Description

technical field [0001] The invention particularly relates to a novel microwave detector with high sensitivity, which belongs to the technical field of microwave power detection. Background technique [0002] The microwave detector is a rectification circuit system that converts AC signals into DC signals for microwave signal detection. It is widely used in remote communication, electronic industry, scientific research and so on. In electronic communication systems, it is often necessary to detect the strength or presence of microwave signals as a standard for normal operation. For example, in a radio receiver it is common to measure the strength of the received signal in order to adjust the automatic gain control circuit so that the desired output signal from the receiver is continuously obtained. Microwave detectors therefore form the heart of signal amplitude measurement systems. At present, Schottky diodes or PN junction diodes are mainly used as components of microwav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R21/00
Inventor 方彬曾中明张宝顺
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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