Transceiver front-end of terahertz low-noise communication system based on Gaas monolithic integration

A single-chip integration and communication system technology, applied in the field of terahertz wireless communication, can solve the problems of deterioration of the front-end noise performance of the transceiver, achieve the effect of reducing the output port of the circuit, suppressing the noise of the local oscillator, and ensuring the realizability

Active Publication Date: 2022-05-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0006] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a terahertz low-noise communication system transceiver front-end based on GaAs monolithic integration, which solves the inherent problem of deterioration of the noise performance of the transceiver front-end caused by multiple frequency doubling of the local oscillator drive source

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  • Transceiver front-end of terahertz low-noise communication system based on Gaas monolithic integration
  • Transceiver front-end of terahertz low-noise communication system based on Gaas monolithic integration
  • Transceiver front-end of terahertz low-noise communication system based on Gaas monolithic integration

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Embodiment 1

[0033]The present embodiment proposes a transceiver front end based on GaAs monolithic integrated terahertz low noise communication system, such as Figure 1 Shown, comprising a first low loss probe, a second low loss probe, an intermediate frequency circuit and a terahertz circuit; the intermediate frequency circuit is arranged in the upper layer of the terahertz circuit, the two are connected by the first low loss probe and the second low loss probe, so that the terahertz low noise communication system transceiver front end is integrated in the 30 mm × 20 mm × 20 mm circuit cavity, to ensure the achievability of the circuit while realizing the miniaturization of the transceiver front end.

[0034] The terahertz circuit comprises a local oscillator triplexer, a local oscillator homotropic 3 dB filter coupler, a first terahertz GaAs monolithic integrated subharmonic mixer, a second terahertz GaAs monolithic integrated split harmonic mixer and an RF 180 ° filter coupler; the inter...

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Abstract

The invention provides a terahertz low-noise communication system transceiver front-end based on GaAs monolithic integration, which belongs to the technical field of terahertz wireless communication, and includes an intermediate frequency circuit and a terahertz circuit. dB filter coupler, RF 180° filter coupler and two terahertz GaAs monolithically integrated subharmonic mixers; local oscillator co-directional 3 dB filter coupler and RF 180° filter coupler including ring cylindrical resonator and Four rectangular waveguides, the ring cylindrical resonator is divided into a large fan ring resonator and three small fan ring resonators through four fan ring grooves, the central angle of the large fan ring resonator is the small fan ring resonator twice; the four rectangular waveguides are respectively connected to the four sector ring resonators. The invention adopts a local oscillator co-directional 3 dB filter coupler and a radio frequency 180° filter coupler with both coupling and filtering functions to realize low local oscillator noise suppression transceiver front end.

Description

Technical field [0001] The present invention belongs to the field of terahertz wireless communication technology, specifically relates to a terahertz low noise communication system based on GaAs monolithic integration of the transceiver front end. Background [0002] With the increasing development of space networking high-speed interconnection applications, the contradiction between limited spectrum resources and rapidly growing high-speed service needs faced by wireless communications puts forward urgent needs for the development of new high-speed communication technologies, and the development of broadband and large-capacity wireless information transmission technology is the primary key technology of future communication systems. [0003] Terahertz waves are located in the transition zone between macroelectronics and micro-infrarology, with characteristics different from microwaves and light waves, and are new frequency bands in the electromagnetic spectrum that have yet to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03D7/16H01P5/18
CPCH03D7/165H01P5/181H04B1/40H03B19/10H01P5/222H01P1/208
Inventor 牛中乾张波杨晓波戴炳礼沈芳张季聪樊勇杨晓帆刘轲陈智
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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