Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Novel shielded coplanar waveguides on GaN-on-Low resistivity Si substrates for MMIC applications

Eblabla, Abdalla ORCID: https://orcid.org/0000-0002-5991-892X, Wallis, David ORCID: https://orcid.org/0000-0002-0475-7583, Guiney, I. and Elgaid, Khaled ORCID: https://orcid.org/0000-0003-3265-1097 2015. Novel shielded coplanar waveguides on GaN-on-Low resistivity Si substrates for MMIC applications. IEEE Microwave and Wireless Components Letters 25 (7) , pp. 427-429. 10.1109/LMWC.2015.2429120

Full text not available from this repository.

Abstract

Shielded-Elevated Coplanar Waveguides (SE-CPWs) with low loss have been successfully developed for the first time for RF GaN on low-resistivity silicon (LR-Si) substrates (σ<;40 Ω·cm). Transmission losses (S21) of less than 0.4 dB/mm at X-band and better than 2 dB/mm at K-band with less than 20 dB return loss were exhibited by the developed SE-CPW, making them comparable in performance to those on traditional (semi-insulating) SI substrates. The developed waveguides use air-bridge technology to suspend CPW tracks above the HEMT GaN layer on LR-Si, directly above an additional thin layer of SiN and shielded ground planes. EM simulation was used to adjust structure parameters for performance optimization. In this work, we eliminated RF energy coupled into the substrate, paving the way for a cost-effective and higher integration GaN MMICs on LR-Si.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: Institute of Electrical and Electronics Engineers
ISSN: 1531-1309
Date of First Compliant Deposit: 12 February 2018
Date of Acceptance: 11 March 2015
Last Modified: 22 Jul 2023 17:05
URI: https://orca.cardiff.ac.uk/id/eprint/109056

Citation Data

Cited 15 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item