Analysis and Design of a Novel Dual-Band Array Antenna With a Low Profile for 2400/5800-MHz WLAN Systems

Author

He, Shanhong ; Xie, Jidong

Author_Institution

Sch. of Electr. Eng. & Inf., Anhui Univ. of Technol., Ma´´anshan, China

Volume

58

Issue

2

fYear

2010

Firstpage

391

Lastpage

396

Abstract

A novel dual-band array antenna and its associated feed networks for 2400/5800-MHz wireless local area networks (WLAN) is proposed. The nested dual-band array is composed of a 2400-MHz band array formed by 16 (4 ?? 4) parallel-fed rectangular patches and a 5800-MHz band array formed by 64 (8 ?? 8) hybrid-fed double-sided printed dipoles. The measured and simulated results are presented and analyzed. The relative impedance bandwidths and the peak gains of the 2400-MHz band and 5800-MHz band arrays reach 8%, 13% (VSWR < 1.5), 24 dBi and 18 dBi respectively. The dual-band array has regular radiation patterns, high polarization purity and antenna efficiency, and it is suitable for integration with other microwave circuits and can be applied in other dual-band system by scaling its size. The design consideration for side lobe level (SLL) suppression by amplitude weighting combining the quarter-wavelength transformer and a small adjustment in the antenna geometry is discussed as well.

Keywords

antenna arrays; antenna feeds; antenna radiation patterns; microstrip antennas; multifrequency antennas; wireless LAN; 2400MHz wireless local area networks; 5800MHz wireless local area networks; antenna efficiency; antenna geometry; bandwidth 2400 MHz; bandwidth 5800 MHz; dual band array antenna; feed networks; high polarization purity; hybrid fed double-sided printed dipoles; parallel fed rectangular patches; quarter wavelength transformer; regular radiation patterns; side lobe level suppression; Analytical models; Antenna arrays; Antenna feeds; Antenna measurements; Antenna radiation patterns; Bandwidth; Dual band; Impedance; Microwave antenna arrays; Wireless LAN; Dual-band; low profile; low side-lobe; planar array;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2009.2037699

Filename

5345756