3mm-waveband small detector front-end

A detector and band technology, applied in the field of millimeter wave detection, can solve the problems of large volume, low integration, and high cost, and achieve the effect of small volume, high integration, and low cost

Inactive Publication Date: 2015-08-12
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a front end of a small-scale detector in the 3mm band, which solves the problems of high cost, low integration and large volume of the front end of the existing waveguide structure 3mm band detector

Method used

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  • 3mm-waveband small detector front-end

Examples

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Embodiment Construction

[0027] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0028] The present invention uses a K-band oscillation source to generate a U-band local oscillator signal through an active frequency doubling method; the U-band local oscillator signal is divided into two paths through a Wilkinson power divider, and one path is again generated by an active frequency doubling method. Band transmission signal is transmitted through the transmitting antenna; the other channel enters the W-band b...

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Abstract

The invention relates to a 3mm-waveband small detector front-end which comprises the components of double 3mm small antennae, a transmitting branch circuit, a receiving branch circuit, a microstrip power divider and a local oscillator frequency doubling link, wherein the double 3mm small antennae comprise a transmitting antenna and a receiving antenna. The local oscillator frequency doubling link is used for supplying an adjustable-frequency local oscillator signal. The microstrip power divider divides the local oscillator signal to two paths. One path of the local oscillator signal is fed to the transmitting branch circuit for supplying an oscillating signal, and the other path is fed to the receiving branch circuit for supplying a local oscillator input. The transmitting branch circuit is used for performing frequency doubling and amplification on one-path signal which is output by the microstrip power divider, obtaining a 3mm-waveband RF signal and transmitting the 3mm-waveband RF signal to the transmitting antenna for transmitting. The receiving branch circuit is used for amplifying a 3mm-waveband echo signal which is received by the receiving antenna and performing secondary harmonic active frequency mixing with the local oscillator input signal for obtaining a middle-frequency output signal. The 3mm-waveband small detector front-end settles the following problems in an existing waveguide-structure 3mm waveband detector front-end: high cost, low integration level and large size.

Description

technical field [0001] The invention relates to the technical field of millimeter wave detection, in particular to a front end of a small-sized detector in the 3mm wave band, which is used for short-distance detection and speed detection of moving targets. Background technique [0002] As a millimeter-wave atmospheric window, the 3mm wave band has small propagation attenuation and short wavelength, especially suitable for all-weather resolution of small targets or clear observation of target details, and can be used for high-resolution anti-collision radars and anti-intrusion sensing systems, etc. . As an important part of the millimeter wave system, the front end of the 3mm band detector generates and transmits the 3mm band detection signal, receives the echo signal of the detection target, and down-converts the 3mm band echo signal to an intermediate frequency signal for the back end to perform signal processing. During the detection process, the frequency difference prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02
CPCG01S7/35G01S7/352G01S13/584G01S13/93
Inventor 王伟崔恒荣孙芸孙浩钱蓉吴亮孙晓玮
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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