Design and implementation of a compact Butler matrix using mitered bends

Author

Mariadoss, Prakash Quinton ; Rahim, Mohamad Kamal A ; Aziz, Mohd Zoinol Abidin Abd

Author_Institution

Wireless Commun. Centre, Universiti Teknologi, Malaysia

Volume

5

fYear

2005

fDate

4-7 Dec. 2005

Abstract

This paper presents the design and realization of a four-port Butler matrix to feed a switched beam antenna array for wireless local area network (WLAN) at 2.4 GHz. A compact Butler matrix using mitered bends has been fabricated on the FR4 PCB. The design is small and the transmission lines are placed as close as possible. Results from simulation and measurement are then being compared in term of return loss (S_ii), transmission (S_ji), isolation (S_ij) and the phase difference.

Keywords

UHF antennas; adaptive antenna arrays; antenna feeds; antenna radiation patterns; array signal processing; transmission lines; wireless LAN; 2.4 GHz; beam forming networks; compact Butler matrix; four-port Butler matrix; mitered bends; smart antennas; switched beam antenna array; transmission lines; wireless local area network; Antenna arrays; Antenna measurements; Butler matrix; Directional antennas; Feeds; Loss measurement; Phase measurement; Transmission line matrix methods; Transmission line measurements; Wireless LAN; Beam Forming Network; Butler Matrix; Smart Antenna; WLAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings

Print_ISBN

0-7803-9433-X

Type

conf

DOI

10.1109/APMC.2005.1606980

Filename

1606980