Design of Wide-Band Branch-Line Coupler in the G-Frequency Band

Author

Prigent, G. ; Rius, E. ; Happy, H. ; Blary, K. ; Lepilliet, Sylvie

Author_Institution

INP-ENSEEIHT, Toulouse

fYear

2006

fDate

11-16 June 2006

Firstpage

986

Lastpage

989

Abstract

This paper deals with the design of broadband hybrid coupler in thin film microstrip (TFMS) technology for millimeter-wave applications in the G-band frequency range. The couplers to be designed are realized in BCB-based technology. The technological process as well as transmission lines characterization and optimization in term of attenuation are described. Classical 3-dB branch-line coupler is developed with 180-GHz central frequency. Then, based on this topology, a broadband coupler using series matching networks is developed. Such a topology allows to reach bandwidth over 50 %, with very flat coupling. Measurements performed in a wide frequency range up to 220 GHz attest from the design accuracy as well as the technological process quality

Keywords

microstrip couplers; millimetre wave couplers; thin film circuits; transmission lines; 180 GHz; BCB-based technology; G-frequency band; broadband hybrid coupler; millimeter-wave applications; series matching networks; thin film microstrip; transmission lines; wide-band branch-line coupler; Attenuation; Bandwidth; Couplings; Frequency; Microstrip; Millimeter wave technology; Network topology; Transistors; Transmission line measurements; Wideband; BCB-based technology; Branch-line coupler; G-Band; Thin-Film Microstrip technology; Wide-band;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2006. IEEE MTT-S International

Conference_Location

San Francisco, CA

ISSN

0149-645X

Print_ISBN

0-7803-9541-7

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2006.249905

Filename

4015080