W-Band 8 × 8 Slot Array Antenna Using Hybrid Processing Technology of Silicon Micromachining and Metal Machining

Jianwen Liang, Yijing He*, Wenhao Tan, Hao Luo, Houjun Sun

*Corresponding author for this work

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

Abstract

In this paper, a multilayer W-band 8 times 8 slot array antenna processed using hybrid technology of silicon micromachining and metal machining is presented. The proposed antenna is composed of four silicon layers for radiating part and two metal layers for feeding network. Adjacent gold-plated silicon substrates and the metal cover plate are connected by gold-gold bonding. Using bulk silicon processing, high fabrication accuracy is realized for the 94-GHz large-scale array antenna. Metal-machining gap waveguide with artificial magnetic conductor (AMC) structure is elaborated for the corporate feeding network. Each 2 times 2-elements slots subarray is excited by the TM240-mode cavity element below. Besides, a structural transition from standard waveguide WR-10 to gap waveguide is employed. Simulated results indicate that the proposed antenna can achieve 6.4 % ( vert mathrm{S}11 vert < -10 text{dB}) operating bandwidth covering from 91.2 to 97.27 GHz, with the gain greater than 26.1 dBi. The proposed antenna has the merits of high gain, heterogeneous integration and low cost, promising usage in various millimeter-wave wireless systems.

Original languageEnglish
Title of host publication2022 IEEE MTT-S International Wireless Symposium, IWS 2022 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665481977
DOIs
Publication statusPublished - 2022
Event9th IEEE MTT-S International Wireless Symposium, IWS 2022 - Harbin, China
Duration: 12 Aug 202215 Aug 2022

Publication series

Name2022 IEEE MTT-S International Wireless Symposium, IWS 2022 - Proceedings

Conference

Conference9th IEEE MTT-S International Wireless Symposium, IWS 2022
Country/TerritoryChina
CityHarbin
Period12/08/2215/08/22

Keywords

  • Slot array antenna
  • gap waveguide
  • gold-gold bonding
  • millimeter wave
  • silicon micro machining technology

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