Tunable isolator with a three fold symmetrical structure

Author

Furuta, Takayuki ; Fukuda, Atsushi ; Okazaki, Hiroshi ; Narahashi, Shoichi

Author_Institution

Res. Labs., NTT DOCOMO, INC., Yokosuka, Japan

fYear

2009

fDate

Sept. 29 2009-Oct. 1 2009

Firstpage

137

Lastpage

140

Abstract

This paper presents a new configuration for a tunable isolator with a varactor diode. The proposed tunable isolator comprises the isolator with a three fold symmetrical structure and successfully improves the decline of insertion loss caused by controlling of the frequency response of the isolator. The proposed tunable isolator has a tuning ratio of 20% with an isolation loss exceeding 15 dB and an insertion loss of below 1.0 dB, in contrast to the 10% coverage of the conventional isolator.

Keywords

microwave isolators; varactors; insertion loss; three fold symmetrical structure; tunable isolator; varactor diode; Bandwidth; Degradation; Diodes; GSM; Insertion loss; Isolators; Radio frequency; Radiofrequency integrated circuits; Tunable circuits and devices; Varactors;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2009. EuMC 2009. European

Conference_Location

Rome

Print_ISBN

978-1-4244-4748-0

Type

conf

Filename

5296543

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2027715