A Ka Band Multi-Channel Integrated Receiver for Passive Millimeter Wave Imaging System

Xi Chen, Xiuzhu Ye, Chao Wang, Anyong Hu, Jungang Miao

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)

Abstract

Passive millimeter wave imaging technology, with its harmless advantages to the human body, has been recognized as an important means to implement human security inspection. As the key component of the passive imager, the performance of the receiver directly determines the accuracy and stability of the whole system. Moreover, a passive imager usually use as an array radiometer, which requires a great quantity of receivers. So it is very important to study the high performance, low cost, miniaturized millimeter wave receiver. In this paper, a multichannel integrated receiver for Ka band is designed, machined and tested. That is, each receiver module contains 8 RF receiving channels working on 32 36 GHz, 8 independent LO operating at 9.875 GHz, and an IF output working from 3.5 to 7.5 GHz. The key parts of each receiving channel include: a)Waveguide-microstrip transition. Two kinds of structures are designed for the different polarization direction of the waveguide. One is the fin line form applied to a horizontally polarized waveguide and the other is a structure combining a ridge waveguide with a microstrip probe. b)Image reject filter implemented by microstrip circuit. c)Cascaded low noise amplifiers, mixer, multipliers active circuit. All of these circuit structures are realized on a complete Rodgers 5880 substrate (Er: 2.2, 254 μm thickness). After the final test, the module frequency conversion gain is 33 dB ± 7.5 dB adjustable. The Image rejection is greater than 26 dB. Noise figure is less than 4.5 dB. The most importance is that the receiver is more integrated and miniaturized, which is suitable for the array passive millimeter wave imaging system.

Original languageEnglish
Title of host publication2018 Progress In Electromagnetics Research Symposium, PIERS-Toyama 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2099-2105
Number of pages7
ISBN (Electronic)9784885523151
DOIs
Publication statusPublished - 31 Dec 2018
Externally publishedYes
Event2018 Progress In Electromagnetics Research Symposium, PIERS-Toyama 2018 - Toyama, Japan
Duration: 1 Aug 20184 Aug 2018

Publication series

NameProgress in Electromagnetics Research Symposium
Volume2018-August
ISSN (Print)1559-9450
ISSN (Electronic)1931-7360

Conference

Conference2018 Progress In Electromagnetics Research Symposium, PIERS-Toyama 2018
Country/TerritoryJapan
CityToyama
Period1/08/184/08/18

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