Ultra-Wide Band Non-reciprocity through Sequentially-Switched Delay Lines

Mathew M. Biedka, Rui Zhu, Qiang Mark Xu, Yuanxun Ethan Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

89 Citations (Scopus)

Abstract

Achieving non-reciprocity through unconventional methods without the use of magnetic material has recently become a subject of great interest. Towards this goal a time switching strategy known as the Sequentially-Switched Delay Line (SSDL) is proposed. The essential SSDL configuration consists of six transmission lines of equal length, along with five switches. Each switch is turned on and off sequentially to distribute and route the propagating electromagnetic wave, allowing for simultaneous transmission and receiving of signals through the device. Preliminary experimental results with commercial off the shelf parts are presented which demonstrated non-reciprocal behavior with greater than 40 dB isolation from 200 KHz to 200 MHz. The theory and experimental results demonstrated that the SSDL concept may lead to future on-chip circulators over multi-octaves of frequency.

Original languageEnglish
Article number40014
JournalScientific Reports
Volume7
DOIs
Publication statusPublished - 6 Jan 2017
Externally publishedYes

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