GaAs monolithic integrated terahertz low-noise communication system transceiver front-end

US12212357B2 · kind B2 · utility

Assignee

• University of Electronic Science and Technology of China · CN

Inventors

• Bo Zhang · Shanghai, CN
• Zhongqian Niu · Sichuan, CN
• Xiaobo Yang · Chengdu, CN
• Bingli Dai · Chengdu, CN
• Yi HU · Chengdu, CN
• Jicong Zhang · Sichuan, CN
• Yong Fan · Nanhu, CN
• Ke Liu · San Diego, US
• Zhi Chen · Sichuan, CN

Key dates

• Filing date: Jul 25, 2022
• Grant date: Jan 28, 2025
• Expiry date: Jul 29, 2043

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03D7/165
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

The present disclosure provides a GaAs monolithic integrated terahertz low-noise communication system transceiver front-end, including an intermediate frequency circuit and a terahertz circuit. The terahertz circuit includes a local oscillator frequency tripler, a local oscillator unidirectional 3 dB filter coupler, a radio frequency 180° filter coupler, and two terahertz GaAs monolithic integrated subharmonic mixers. The local oscillator unidirectional 3 dB filter coupler and the radio frequency 180° filter coupler each include one ring-cylindrical resonant cavity and four rectangular waveguides. The ring-cylindrical resonant cavity is divided into four rectangular waveguides which are correspondingly connected to the four sector-annular resonant cavities, respectively. The present disclosure suppresses the local oscillator noise by adopting a local oscillator unidirectional 3 dB filter coupler and a radio frequency 180° filter coupler with both coupling and filtering functions, thereby achieving a low local oscillator noise transceiver front-end.