Novel small folded shorted-patch antennas

Author

Li, R.L. ; DeJean, G. ; Tsai, E. ; Tentzeris, E. ; Laskar, J.

Author_Institution

Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

Volume

4

fYear

2002

fDate

2002

Firstpage

26

Abstract

The size of a conventional shorted-patch antenna can be reduced by almost a half via folding the shorted patch together with the ground plane. The resonant frequency of the folded shorted-patch antenna may be further lowered by reducing the width of the shorting walls or by moving the folded patch upward. It is shown that the antenna length of a folded shorted-patch can be reduced to less than 1/8 the length of a conventional patch antenna. A practical folded shorted-patch antenna for the Bluetooth ISM band is designed and measured to demonstrate its application potential. This size-reduced antenna can achieve an impedance bandwidth of 4% and has a nearly omnidirectional radiation pattern, which may be suitable for some mobile communications systems.

Keywords

Bluetooth; UHF antennas; antenna radiation patterns; electric impedance; microstrip antennas; mobile antennas; 2.4 to 2.483 GHz; Bluetooth; ISM band; folded ground plane; folded shorted-patch antennas; impedance bandwidth; mobile communications systems; omnidirectional radiation pattern; resonant frequency; Bluetooth; Dielectric substrates; Finite difference methods; Microstrip antennas; Mobile antennas; Mobile computing; Patch antennas; Resonant frequency; Time domain analysis; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2002. IEEE

Print_ISBN

0-7803-7330-8

Type

conf

DOI

10.1109/APS.2002.1016918

Filename

1016918