Miniaturized multi-element monopole antenna

Author

Hong, Wonbin ; Sarabandi, Kamal

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Univ. of Michigan, Ann Arbor, MI

fYear

2008

fDate

5-11 July 2008

Firstpage

1

Lastpage

4

Abstract

An electrically small antenna has been developed, presented and discussed. The featured antenna is derived from the traditional monopole antenna. Additional elements are combined and the topology is further modified to display a radiation characteristic similar to a vertically oriented monopole antenna. The antenna is further miniaturized for enhanced mobility and compactness. The miniaturized multi-element monopole antenna is less than 0.03 lambda in vertical height. 2:1 VSWR bandwidth of the proposed antenna is measured to be similar to a typical electrically small monopole antenna. However, the antenna features excellent radiation efficiency and is easily matched to a 50 ohm feed line. To further enhance the bandwidth of the antenna, a dual-band multi-element antenna is designed by combing two multi-element antennas through parasitic coupling. The miniaturized dual-band multi-element antenna displays improved bandwidth, omnidirectional radiation patterns, and excellent gain.

Keywords

UHF antennas; antenna radiation patterns; monopole antennas; ground plane; low-profile antenna; microstrip resonators; miniaturized multi-element monopole antenna; omnidirectional radiation patterns; open-circuited segments; quarterwave elements; Antenna measurements; Antenna radiation patterns; Bandwidth; Dual band; Geometry; Loaded antennas; Microstrip antennas; Mobile antennas; Polarization; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE

Conference_Location

San Diego, CA

Print_ISBN

978-1-4244-2041-4

Electronic_ISBN

978-1-4244-2042-1

Type

conf

DOI

10.1109/APS.2008.4619328

Filename

4619328