Title :
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
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;
Conference_Titel :
Communications (APCC), 2011 17th Asia-Pacific Conference on
Conference_Location :
Sabah
Print_ISBN :
978-1-4577-0389-8
DOI :
10.1109/APCC.2011.6152862
