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Terahertz Low Noise Miniaturized Image Frequency Suppression Transceiver Front-End Based on Heterogeneous Integration

A technology of image frequency suppression and terahertz, applied in the field of terahertz wireless communication, can solve problems such as poor image frequency suppression and imperfect circuit structure

Active Publication Date: 2022-05-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Terahertz image frequency suppression receiving front-end has been reported abroad[B. Thomas, S. Rea, B. Moyna, et al. A 320-360 GHz subharmonically pumped image rejection mixer using planarSchottky diodes[J]. IEEE Microwave and Wireless Components Letters, 2009, 19(2): 101-103], but due to the imperfect circuit structure, the image frequency suppression is poor

Method used

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  • Terahertz Low Noise Miniaturized Image Frequency Suppression Transceiver Front-End Based on Heterogeneous Integration

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Embodiment 1

[0029] This embodiment proposes a terahertz low-noise miniaturized image frequency suppression transceiver front-end based on heterogeneous integration, such as figure 1 As shown, it includes a first low-loss probe, a second low-loss probe, an intermediate frequency circuit and a terahertz circuit; The loss probe connection enables the overall integration of the terahertz low-noise miniaturized image frequency suppression transceiver front-end in a circuit cavity of 30 mm×20 mm×20 mm, which ensures the realizability of the circuit and realizes the miniaturization of the transceiver front-end.

[0030] The terahertz circuit includes a local oscillator tripler, a 135° 3 dB filter coupler, a first quartz heterogeneous integrated subharmonic mixer, a second quartz heterogeneous integrated subharmonic mixer, and a radio frequency waveguide divider; the intermediate frequency circuit includes an intermediate frequency 90° bridge and an intermediate frequency low noise amplifier arra...

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Abstract

The invention provides a terahertz low-noise miniaturized image frequency suppression transceiver front-end based on heterogeneous integration, which belongs to the technical field of terahertz wireless communication and includes an intermediate frequency circuit and a terahertz circuit arranged up and down. The terahertz circuit includes a local oscillator frequency tripler, 135° 3 dB filter coupler, RF waveguide power divider and two quartz heterogeneous integrated subharmonic mixers; input unit, first output unit, isolation unit and second output unit of 135° 3 dB filter coupler The resonant cavity of the input unit is coupled through the resonant groove in turn to form a ring structure. The cavity length of the input unit is twice that of the other three units, and the waveguide length difference between the first output unit and the second output unit is 45°. The present invention adopts a ring-shaped 135° 3 dB filter coupler with dual functions of filtering and coupling, realizes circuit miniaturization, suppresses intrinsic noise at the same time, and obtains a low-noise image frequency suppressing transceiver front end.

Description

technical field [0001] The invention belongs to the technical field of terahertz wireless communication, and in particular relates to a terahertz low-noise miniaturized image frequency suppression transceiver front end based on heterogeneous integration. Background technique [0002] Terahertz waves refer to electromagnetic waves with a frequency in the range of 0.1 to 10 THz. Its spectrum is between millimeter waves and infrared light waves. An important extension of scientific research. Due to the moderate beam width, large bandwidth and high confidentiality of terahertz waves, its application prospects in the field of high-speed wireless communication have attracted widespread attention at home and abroad, and it is urgent to carry out research on new systems and methods for terahertz high-speed communication. Integrated transceiver front-end technology is one of its core. [0003] The reported front-ends of terahertz solid-state high-speed communication systems have pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03D7/16H01P1/207
CPCH03D7/165H01P1/207H04B1/40H03B19/10H01P5/22H01P1/208
Inventor 牛中乾张波杨晓波胡怡张季聪管明樊勇杨晓帆刘轲陈智
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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