Low-phase-noise microstrip oscillator applied to millimeter-wave radar

A millimeter wave radar, low phase noise technology, applied in the field of electronics, can solve problems such as low Q value and large circuit loss, and achieve the effects of improving output power, high harmonic suppression, and high output power

Active Publication Date: 2020-08-04
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the circuit loss of the microstrip structure is large and the Q value is low

Method used

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  • Low-phase-noise microstrip oscillator applied to millimeter-wave radar
  • Low-phase-noise microstrip oscillator applied to millimeter-wave radar
  • Low-phase-noise microstrip oscillator applied to millimeter-wave radar

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Embodiment Construction

[0033] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0034] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should...

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Abstract

The invention relates to a low-phase-noise microstrip oscillator applied to a millimeter-wave radar, and belongs to the technical field of electronics. The oscillator comprises a five-order hairpin microstrip line coupled resonator, a gallium arsenide field effect transistor, a gate phase shift line, a drain phase shift line, a drain bias circuit, a gate bias circuit, an output network and two fan-shaped microstrip short circuit branches. The five-order hairpin microstrip line coupled resonator belongs to a planar microstrip structure and is easy for processing and circuit integration. Meanwhile, the five-order hairpin type microstrip line coupled resonator belongs to a cross-coupled resonator, can generate a transmission zero point at a limited frequency near a passband, has very strong out-of-band rejection capability and a relatively high Q value, effectively improves phase noise and harmonic suppression of the oscillator, and meanwhile, improves output power.

Description

technical field [0001] The invention belongs to the field of electronic technology and relates to a low phase noise microstrip oscillator applied to millimeter wave radar. Background technique [0002] Millimeter-wave radar has the advantages of wide frequency range, little impact on climate, and strong anti-interference ability. It has been successfully applied in the fields of vehicle radar, industrial level measurement, and water level detection. The oscillator is one of the most critical components of the millimeter wave radar system, and its performance directly affects the overall performance index of the millimeter wave radar system. Oscillators generate a stable carrier at a specific frequency for modulation and mixing. In the millimeter wave radar, the phase noise of the oscillator will reduce the sensitivity of the system receiving signal and the signal-to-noise ratio of the system; and the output signal of the oscillator contains multiple harmonic components in a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02G01S7/36H03B5/02H01P7/08
CPCG01S7/023G01S7/02G01S7/36H03B5/02H01P7/08
Inventor 王斌张德保苏东郝宏刚尹波
Owner CHONGQING UNIV OF POSTS & TELECOMM
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