Ultra wideband coupler design for Butler Matrix application

Author

binti Muklas, Nor Salehah ; Rahim, S.K.A. ; Seman, Norhudah

Author_Institution

Fac. of Electr. Eng., Univ. Teknol. Malaysia, Skudai, Malaysia

fYear

2011

fDate

2-5 Oct. 2011

Firstpage

506

Lastpage

511

Abstract

This paper presents a design of a 3-dB compact ultra wideband (UWB) coupler for a 4×4 Butler Matrix which is operating between 3 and 11 GHz frequency range. The design is using microstrip-slot multilayer technology that allows having a compact and very broad bandwidth coupler. Elliptical shaped strips that are broadside coupled by a slot in a middle common ground plane is employed in order to achieve UWB performance. The device is fabricated on 0.8-mm thick FR4 substrates that occupy the dimension of 30×15 mm. A good performance over UWB frequency range from 3 to 11 GHz is verified experimentally.

Keywords

microstrip couplers; Butler matrix application; FR4 substrates; UWB frequency range; broad bandwidth coupler; compact UWB coupler; compact bandwidth coupler; elliptical-shaped strips; frequency 3 GHz to 11 GHz; microstrip-slot multilayer technology; size 0.8 mm; ultrawideband coupler design; Bandwidth; Couplings; Directional couplers; Microstrip; Nonhomogeneous media; Substrates; UWB coupler; microstrip-slot; multilayer;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications (APCC), 2011 17th Asia-Pacific Conference on

Conference_Location

Sabah

Print_ISBN

978-1-4577-0389-8

Type

conf

DOI

10.1109/APCC.2011.6152862

Filename

6152862