Broadband Fixed Phase Shifter for C-band Applications

Author

Abbosh, Amin M.

Author_Institution

Sch. of Inf. Technol. & Electr. Eng., Univ. of Queensland, St. Lucia, QLD

fYear

2007

fDate

11-14 Dec. 2007

Firstpage

1

Lastpage

4

Abstract

The design of a broadband fixed phase shifter for C-band applications is presented. The proposed device is composed of two parts: a quadrature 3 dB directional coupler, which is based on the edge-coupled microstrip lines with a slotted ground plane, and the Wilkinson combiner. The phase shifter presented in this paper shows a 45degplusmn5deg fixed phase shift across the band 4 GHz to 8 GHz with less than 1 dB insertion loss and better than 12 dB return loss at the centre of the C-band. The designed device also shows a flat group delay, which enables its use in a narrow pulse transmission/reception and in the high data rate systems. The designed phase shifter has a compact size with dimensions of 30 mmtimes35 mm.

Keywords

directional couplers; microstrip lines; microwave phase shifters; power combiners; C-band application; Wilkinson combiner; broadband fixed phase shifter; directional coupler; edge-coupled microstrip line; flat group delay; frequency 4 GHz to 8 GHz; slotted ground plane; Bandwidth; Coupling circuits; Directional couplers; Insertion loss; Microstrip; Microwave devices; Microwave propagation; Narrowband; Phase shifters; Phased arrays; Wilkinson combiner; phase shifter; quadrature coupler;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2007. APMC 2007. Asia-Pacific

Conference_Location

Bangkok

Print_ISBN

978-1-4244-0748-4

Electronic_ISBN

978-1-4244-0749-1

Type

conf

DOI

10.1109/APMC.2007.4554809

Filename

4554809