Ultrafast Low-Loss 40–70 GHz SPST Switch

Author

Thian, Mury ; Buchanan, Neil B. ; Fusco, Vincent F.

Author_Institution

ECIT Inst., Queen´´s Univ., Belfast, UK

Volume

21

Issue

12

fYear

2011

Firstpage

682

Lastpage

684

Abstract

The design and characterizations of an ultrafast single-pole single-throw (SPST) absorptive differential switch are presented. The switch exhibits low insertion loss less than 1 dB, and isolation better than 16 dB from 40 to 70 GHz. Sub-nanosecond switching time is achieved by adopting a differential current-steering technique. The total measured rise and fall time are 75 ps envisaging that switching rates up to 13 Gb/s are achievable. To our best knowledge, this is the fastest, lowest insertion loss V-band SPST switch yet reported that can operate over a wide bandwidth of 30 GHz.

Keywords

microwave switches; millimetre wave devices; bandwidth 30 GHz; differential current-steering technique; frequency 40 GHz to 70 GHz; insertion loss V-band SPST switch; subnanosecond switching time; time 75 ps; ultrafast low-loss SPST absorptive differential switch; ultrafast low-loss single-pole single-throw absorptive differential switch; Bandwidth; Current measurement; Impedance matching; Silicon germanium; Switching circuits; Transmission line measurements; Current steering; SiGe; direct conversion; heterojunction bipolar transistor (HBT); high-speed switch; integrated circuits (ICs); mm-wave; modulators; on-off keying (OOK); single-pole single-throw (SPST) switch;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2011.2170667

Filename

6051497