A Low-Cost 60-GHz Switched-Beam Patch Antenna Array With Butler Matrix Network

Author

Tseng, Chao-Hsiung ; Chen, Chih-Jung ; Chu, Tah-Hsiung

Author_Institution

Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei

Volume

7

fYear

2008

fDate

6/30/1905 12:00:00 AM

Firstpage

432

Lastpage

435

Abstract

In this letter, a low-cost 60-GHz switched-beam patch antenna array with Butler matrix network is developed and experimentally demonstrated. In order to improve integration with the patch elements, a 4 times 4 planar Butler matrix is implemented in a low-dielectric substrate. The four rectangular patches fed by inset microstrip lines are connected to the outputs of the Butler matrix for the 60-GHz operation. Because of the fabrication tolerances, the operating frequency of the fabricated antenna shifts to 62 GHz. The radiation patterns measured at 62 GHz are in good agreement with the theoretical array factors. The antenna developed in this letter provides a cost-effective approach to implement an adaptive antenna for 60-GHz wireless communications.

Keywords

microstrip antenna arrays; millimetre wave antenna arrays; telecommunication switching; Butler matrix network; frequency 60 GHz; low-dielectric substrate; microstrip antennas; microstrip lines; millimeter wave communication; radiation patterns; switched-beam patch antenna array; Millimeter wave antenna arrays; microstrip antennas; millimeter wave communication; switched-beam antenna;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2008.2001849

Filename

4556654