A low profile antenna with shaped beams for indoor applications of WLAN systems

Author

Sun, Bao-hua ; Li, Jian-feng ; Zhou, Hai-jin ; Zhou, Shi-gang ; Liu, Qi-zhong

Author_Institution

Nat. Key Lab. of Antenna & Microwave Technol., Xidian Univ., Xi´´an

fYear

2008

fDate

2-5 Nov. 2008

Firstpage

371

Lastpage

373

Abstract

A novel low profile antenna composed of a shorted conical monopole, a top-loaded circular patch and a probe feed is presented. The antenna can operate in two different modes: the monopole antenna mode and the microstrip antenna mode, which leads to down-tilt radiation patterns when the antenna is mounted on a wall. An antenna prototype with dimension of 5.5 mm in height for WLAN operation in the 2.4-GHz band is demonstrated. Simulated and measured results show that the antenna has an impedance bandwidth of 560 MHz (2.17-2.73 GHz) and shaped-beam radiation patterns.

Keywords

UHF antennas; antenna radiation patterns; indoor radio; microstrip antennas; monopole antennas; shaped beam antennas; wireless LAN; WLAN; bandwidth 560 MHz; circular patch; down-tilt radiation patterns; frequency 2.17 GHz to 2.73 GHz; impedance bandwidth; indoor antenna; microstrip antenna; probe feed; shaped-beam radiation patterns; shorted conical monopole antenna; size 5.5 mm; Antenna feeds; Antenna measurements; Antenna radiation patterns; Bandwidth; Impedance measurement; Microstrip antennas; Probes; Prototypes; Shape measurement; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas, Propagation and EM Theory, 2008. ISAPE 2008. 8th International Symposium on

Conference_Location

Kunming

Print_ISBN

978-1-4244-2192-3

Electronic_ISBN

978-1-4244-2193-0

Type

conf

DOI

10.1109/ISAPE.2008.4735223

Filename

4735223