Design of microstrip Y-junction circulator based on ferrite thin films

Author

Peng, Bin ; Zhang, Wenxu ; Sun, Yanlong ; Lin, Jingjie ; Zhang, Wanli ; Li, Hui

Author_Institution

State Key Lab. of Electron. Thin Films & Integrated, Univ. of Electron. Sci. & Technol. of, Chengdu, China

fYear

2011

fDate

20-22 April 2011

Firstpage

1

Lastpage

4

Abstract

This work presents a design of microstrip Y-junction microwave circulator based on ferrite films. In this film circulator, a hole on the backside of the substrate is designed to increase the ratio of the ferrite film thickness to the overall thickness. The designed film circulator is fabricated using barium ferrite films with thickness of 8 μm. The experimental results show that a non-reciprocal effect of 17 dB occurs at about 26 GHz. The fabricated self-biased film circulator exhibits an isolation of 44 dB and an insertion loss of 27 dB at about 26 dB. The large insertion losses are thought to be originated from impedance mismatch and the magnetic losses.

Keywords

barium; ferrite circulators; magnetic thin films; microstrip components; microwave circulators; barium ferrite film; ferrite thin film; frequency 26 GHz; impedance mismatch; insertion loss; magnetic loss; microstrip Y-junction microwave circulator design; nonreciprocal effect; self-biased film circulator fabrication; size 8 mum; Barium; Circulators; Ferrite films; Insertion loss; Microstrip;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (CJMW), 2011 China-Japan Joint

Conference_Location

Hangzhou

Print_ISBN

978-1-4577-0625-7

Electronic_ISBN

978-7-308-08555-7

Type

conf

Filename

5774036