N-Internal Port Design for Wide Band Electrically Small Antennas With Application for UHF Band

Author

Raslan, Ahmed R. ; Safwat, Amr M. E.

Author_Institution

Electron. Eng. Dept., American Univ., Cairo, Egypt

Volume

61

Issue

9

fYear

2013

Firstpage

4431

Lastpage

4437

Abstract

Component-loaded antennas are treated as antennas with internal ports. The proposed model explains, through simple numerical simulations and an optimization algorithm, the behavior of these antennas over a wide band. Two examples are studied; dipole-based antennas loaded with one internal port and two internal ports. Based on the proposed analysis, a UHF (0.47 GHz-0.86 GHz) antenna is designed and measured. It has 2 cm × 5 cm area, less than -6 dB reflection coefficient, omni-directional radiation pattern, and more than 90% efficiency. Measurements confirm the theoretical predictions.

Keywords

UHF antennas; antenna radiation patterns; broadband antennas; dipole antennas; numerical analysis; omnidirectional antennas; optimisation; N-internal port design; UHF antenna; UHF band; component-loaded antennas; dipole-based antennas; frequency 0.47 GHz to 0.86 GHz; numerical simulation; omnidirectional radiation pattern; one-internal port; optimization algorithm; reflection coefficient; two-internal port; wideband electrically small-antennas; Digital video broadcasting-handheld (DVB-H) antennas; UHF antennas; electrically small antennas; loaded antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2013.2271235

Filename

6547679