Miniaturized integrated folded helical antennas

Author

Ma, Haijiang ; Yang, H. Y David

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Illinois at Chicago, Chicago, IL, USA

fYear

2011

fDate

3-8 July 2011

Firstpage

753

Lastpage

756

Abstract

This paper presents a folding scheme to address fundamental issues of planar electrically small resonant antennas with small radiation resistance, high Q factor, and narrow bandwidth. Two printed folded helical antennas are investigated as examples of small antennas for GSM1800/1900 bands. Dramatic bandwidth enhancements of as much as 66% and 163% are found, respectively, for folded helical dipole and its monopole version over their non-folded counterparts. The proposed folding method facilitates integrated antenna miniaturization with self resonance, sufficient bandwidth, and self impedance matching.

Keywords

dipole antennas; helical antennas; impedance matching; microstrip antennas; planar antennas; GSM1800/1900 bands; Q factor; folded helical dipole; integrated antenna miniaturization; miniaturized integrated folded helical antennas; monopole version; planar electrically small resonant antennas; printed folded helical antennas; self impedance matching; self resonance; small radiation resistance; Bandwidth; Dipole antennas; Helical antennas; Impedance; Q factor; Resistance; Q-factor; bandwidth; electrically small antenna (ESA); folded helix; impedance matching;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on

Conference_Location

Spokane, WA

ISSN

1522-3965

Print_ISBN

978-1-4244-9562-7

Type

conf

DOI

10.1109/APS.2011.5996822

Filename

5996822