Broadband millimeter wave second harmonic mixer

A second harmonic and millimeter wave technology, applied in the field of radar RF solid-state devices, to achieve the effect of simplifying circuit size, low conversion loss, and high isolation

Pending Publication Date: 2021-10-22
NANJING UNIV OF INFORMATION SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It effectively solves the problem of realizing low conversion loss in the 84 GHz to 94 GHz wide frequency band, guarantees the realization of W-band high-performance and low-cost receivers, and meets the requirements of its high-performance test instruments

Method used

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  • Broadband millimeter wave second harmonic mixer
  • Broadband millimeter wave second harmonic mixer
  • Broadband millimeter wave second harmonic mixer

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Embodiment Construction

[0021] The invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] refer to figure 1 . In the preferred embodiment described below, a broadband low conversion loss millimeter wave mixer includes: RF input height-reducing waveguide 4, local oscillator input curved waveguide 1, local oscillator input height-reducing waveguide 2, shielded circuit cavity and Hybrid transmission microstrip line circuit, and the bottom of the substrate is coated with conductive glue and connected to the hybrid circuit cavity. The main working characteristics of the circuit are: the circuit cavity runs through the RF input height reduction waveguide 4 and the local oscillator input bending waveguide 1 and the local oscillator input height reduction The waveguide 2, the Schottky planar diode 9 is placed on the diode matching 8 between the RF DC ground 6 and the local oscillator matching filter 10 on the upper surface of the frequency mixing circuit ...

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Abstract

The invention relates to a broadband millimeter wave second harmonic mixer, and belongs to the field of radar radio frequency solid-state devices. The mixer comprises a local oscillator input bending waveguide (1), a local oscillator input height reduction waveguide (2), a local oscillator input short circuit surface (3), a radio frequency input height reduction waveguide (4), a radio frequency input short circuit surface (5), a radio frequency direct current grounding (6), a radio frequency waveguide microstrip probe transition (7), a diode matching (8), a Schottky plane diode (9), a local oscillator matching filter (10), a local oscillator waveguide microstrip probe transition (11), an intermediate frequency low-pass filter (12), an intermediate frequency output (13), and a mixer circuit board (14). The device is simple and exquisite in structure, high in isolation degree, wide in working frequency band and low in frequency conversion loss. The problem of low frequency conversion loss realization in a wide frequency band of 84 GHz-94 GHz is effectively solved, the realization of a W-band high-performance and low-cost receiver is ensured, and the requirement of a high-performance test instrument is met.

Description

technical field [0001] The invention relates to a broadband millimeter wave second harmonic mixer, which belongs to the field of radar radio frequency solid-state devices. Background technique [0002] With the rapid development of the world, the application of wireless communication and other technologies requires the system to have higher operating frequency and wider operating bandwidth. For expanding the operating frequency band of the receiver, it is of great significance to develop a wide-band communication system. Among the many bands of the millimeter wave, the W band (75-110 GHz) is a very important frequency band in the millimeter wave, and its notable feature is that it has a considerable bandwidth. As a transitional frequency band extending from the high-end frequency band to the submillimeter wave, the millimeter wave has rich spectrum resources and can be widely used in the direction of radio communication. In a radio communication system, the role of the rece...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/02H03D7/16
CPCG01S7/02H03D7/16
Inventor 蒋伊伊姚常飞崔灿顾希雅林昊
Owner NANJING UNIV OF INFORMATION SCI & TECH
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