Designing Capacitive Coupling Element Antennas With Bandwidth Estimators

Author

Lehtovuori, Anu ; Valkonen, Risto ; Ilvonen, Janne

Author_Institution

Dept. of Radio Sci. & Eng., Aalto Univ., Aalto, Finland

Volume

13

fYear

2014

fDate

2014

Firstpage

959

Lastpage

962

Abstract

Ranking different nonresonant antenna structures is impossible, if their achievable potential with a matching circuit is ignored when designing the radiating parts. Novel bandwidth estimators offer an efficient tool to seek optimal antenna structures. This letter systematically analyzes a certain representative set of capacitive coupling element antennas and gives guidelines for finding the best antenna structures. The obtained results for one-element structures are applied to design a two-element antenna for the bands 0.7-0.96 and 1.71-3.5 GHz. A prototype demonstrates that the choices made based on the theoretical study and ideal simulations steer the antenna solution to produce the required performance. Consequently, the presented systematic approach may promote the development of antennas in future.

Keywords

UHF antennas; antenna radiation patterns; estimation theory; microwave antennas; bandwidth estimators; capacitive coupling element antennas; frequency 0.7 GHz to 0.96 GHz; frequency 1.71 GHz to 3.5 GHz; matching circuit; nonresonant antenna structures; one-element structures; optimal antenna structures; radiating parts; two-element antenna; Antenna measurements; Antennas; Bandwidth; Couplings; Systematics; Topology; Antenna; bandwidth estimator; capacitive coupling element (CCE); matching topology;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2014.2322910

Filename

6813611