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W-waveband third harmonic frequency mixer

A sub-harmonic mixer and band technology, applied in the field of microwave and millimeter wave circuits, can solve the problems of difficult acquisition of local oscillators, high loss, high cost and difficult assembly, etc., and achieve the effects of easy direct contact, reduced loss, and easy acquisition

Inactive Publication Date: 2017-12-19
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a planar W-band third harmonic mixer, which can effectively overcome the shortcomings of the current W-band harmonic mixer, such as high loss, difficult acquisition of local oscillators, high cost and difficult assembly.

Method used

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment: figure 1 As shown, a W-band third harmonic mixer includes a metal shielding cavity 1, a frequency mixing circuit board 2, and two Schottky diodes 3, and the frequency mixing circuit board 2 is printed on a medium by a low-loss dielectric substrate 4 The metal structure 5 on the front of the substrate 4 and the metal structure 6 printed on the back of the dielectric substrate 4 are composed of a 0.127 mm low-loss Rogers 5880 dielectric substrate. The metal structure 5 consists of a waveguide fin line transition structure 20, two Matching groove 29, fin line 28, pipe seat gap 25, gradient matching line 21, local oscillator low-pass filter 22, local oscillator transition probe (23) and intermediate frequency low-pass filter 24 are arranged in sequence, plus two rows for The metallized through hole 26 grounded on the side and the two semicircular positioni...

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Abstract

The invention discloses a W-waveband third harmonic frequency mixer. The frequency mixer comprises a metal shielding cavity, a frequency mixing circuit structure and two schottky dodoes; the frequency mixing circuit structure consists of a waveguide fin line transitional structure, two matched grooves, a fin line, a tube base gap, a gradually-changed matched line, a local oscillation low-pass filter, a local oscillation transitional probe and an intermediate-frequency low-pass filter which are arranged in sequence; and the metal shielding cavity consists of upper and lower metal cavities, and comprises a radio frequency waveguide, a local oscillation waveguide and a substrate positioning pin hole. The frequency mixer can be used for a millimeter wave communication system, particularly a W-waveband receiver system, and has the advantages of low loss, easy integration with a Ka waveband, simple structure, planar circuit and easy assembling.

Description

technical field [0001] The invention belongs to the technical field of microwave and millimeter wave circuits, in particular to a W-band third harmonic mixer. Background technique [0002] With the rise of the mobile Internet and the Internet of Things, wireless communication systems are required to have greater communication capacity and faster transmission rates, and these system operating frequencies are extended to millimeter waves. The frequency range of the W-band is 75-110GHz, and its wavelength is 3mm. The center frequency is at the atmospheric window, and it has been extensively studied because of its great potential in communication. [0003] In modern wireless communication systems, the performance of the mixer directly affects the performance of the entire receiver. Therefore, it is of great significance to develop and research low-cost, low-loss, and low-noise millimeter-wave mixers. Harmonic mixers have the advantage of mixing using harmonics of the LO freque...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/213
CPCH01P1/213
Inventor 林先其杨永穆曾姜杰刘士林贾小翠朱忠博樊勇赵明华
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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