Surface-Loaded Ferrite Substrate Integrated Waveguide Switch

Author

Qiu Dong Huang ; Yu Jian Cheng ; Li, Joshua Le-Wei

Author_Institution

EHF Key Lab. of Fundamental Sci., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

25

Issue

4

fYear

2015

fDate

42095

Firstpage

232

Lastpage

234

Abstract

In this letter, a magnetically controlled surface-loaded ferrite single pole single through (SPST) switch is presented. The ferrite slab is loaded on the broad wall surface of a substrate integrated waveguide (SIW). When a dc magnetic bias is applied to the ferrite slabs, the effective permeability of the ferrite becomes negative. In this case, the wave will be cut off. After investigating the design principle, an X-band switch prototype is fabricated and measured. Its insertion loss is less than 1.6 dB, return loss is better than 15 dB, and isolation is better than 27 dB in a frequency range from 9.5 to 11 GHz.

Keywords

ferrites; microwave switches; prototypes; substrate integrated waveguides; X-band switch prototype; dc magnetic bias; ferrite slab; frequency 9.5 GHz to 11 GHz; insertion loss; single pole single through switch; surface-loaded ferrite substrate integrated waveguide switch; Bandwidth; Ferrites; Insertion loss; Slabs; Substrates; Switches; Substrate integrated waveguide (SIW); surface-loaded ferrite; switch;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2015.2400935

Filename

7056571