Low-profile circular array of equilateral triangular patches for angular diversity

Author

Fassetta, S. ; Sibille, A.

Author_Institution

ENSTA, Paris, France

Volume

150

Issue

1

fYear

2003

Firstpage

34

Lastpage

36

Abstract

The design of a planar circular antenna array of 6-triangular patches radiating away from broadside and intended for angular diversity at 5.1 GHz (HIPERLAN) is presented. This work is a contribution to the size reduction effort to integrate smart antennas on laptop computers. Each patch within the array is excited in its TM₁₁ mode (endfire radiation) on a high permittivity substrate (10.2). The thickness of the array is ∼1.4 mm. The 3 dB beamwidth in azimuth is about 60°. The return loss bandwidth is about 2% (VSWR<2), and the radiation pattern bandwidth is slightly less than 0.5%. Details of the antenna design and experimental results are presented for a fixed beam configuration.

Keywords

adaptive antenna arrays; antenna radiation patterns; microstrip antenna arrays; planar antenna arrays; wireless LAN; 5.1 GHz; HIPERLAN; TM₁₁ mode; angular diversity; antenna design; beamwidth; broadside; endfire radiation; equilateral triangular patches; fixed beam configuration; high permittivity substrate; laptop computers; low-profile circular array; planar circular antenna array; radiation pattern bandwidth; return loss bandwidth; size reduction; smart antennas; triangular patches;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:20030110

Filename

1194094