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A 260-GHz on-chip cavity-backed slot antenna

Published online by Cambridge University Press:  27 July 2018

Jun Xiao ,
Zihang Qi ,
Xiuping Li ,
Weiwei Feng  and
Hua Zhu
Jun Xiao
Affiliation:
School of Electronic Engineering, Beijing University of Posts and Telecommunications, and Beijing Key Laboratory of Work Safety Intelligent Monitoring, Beijing 100876, China
Zihang Qi
Affiliation:
School of Electronic Engineering, Beijing University of Posts and Telecommunications, and Beijing Key Laboratory of Work Safety Intelligent Monitoring, Beijing 100876, China
Xiuping Li*
Affiliation:
School of Electronic Engineering, Beijing University of Posts and Telecommunications, and Beijing Key Laboratory of Work Safety Intelligent Monitoring, Beijing 100876, China
Weiwei Feng
Affiliation:
School of Electronic Engineering, Beijing University of Posts and Telecommunications, and Beijing Key Laboratory of Work Safety Intelligent Monitoring, Beijing 100876, China
Hua Zhu
Affiliation:
School of Electronic Engineering, Beijing University of Posts and Telecommunications, and Beijing Key Laboratory of Work Safety Intelligent Monitoring, Beijing 100876, China
*
Author for correspondence: Xiuping Li, E-mail: xpli@bupt.edu.cn
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Abstract

This paper presents a cavity-backed dual-slot antenna in 0.13-μm SiGe BiCMOS technology. The dual-slot structure is excited by a cross-shaped strip line and a cavity which is formed by the topmost metal layer connected to the bottom metal layer through vias in between. By adopting dual-slot and cross-shaped feed line, the bandwidth is significantly enhanced by 196% compared with the single-slot antenna with straight feed line. The reason for bandwidth enhancement has been analyzed. The proposed antenna shows a measured impedance bandwidth of 15.2 GHz from 248.2 to 263.4 GHz for |S11| < −10 dB. The simulated and measured peak gains of the cavity-backed dual-slot antenna are −1.3 and −2.1 dBi, respectively. The simulated radiation efficiency is 31.1%. The total size of the antenna is 0.46 mm × 0.48 mm.

Keywords

0.13-μm SiGe BiCMOS technologycavity backedon-chip antennaslot antenna
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 11 , Issue 1 , February 2019 , pp. 27 - 34
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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