A wideband unidirectional antenna using conical reflector fed by circular ring

Author

Ketwan, Gitsada ; Phongcharoenpanich, Chuwong ; Kosulvit, Sompol

Author_Institution

Fac. of Eng., King Mongkut´´s Inst. of Technol., Bangkok, Thailand

Volume

5

fYear

2005

fDate

4-7 Dec. 2005

Abstract

A wideband antenna radiating unidirectional beam is proposed by using a conical reflector excited by a circular ring. The radiation characteristics such as radiation pattern and directivity are simulated using numerical electromagnetic code based on method of moments. The impedance characteristics are measured to clarify the impedance bandwidth. The experimental results of radiation pattern are compared with the theoretical results. From the results of the investigation, it is obvious that the efficient directivity with wide bandwidth is achieved. This antenna is very useful in the case that the wide bandwidth applications are necessary.

Keywords

antenna radiation patterns; broadband antennas; directive antennas; method of moments; reflector antenna feeds; circular rings; conical reflectors; impedance bandwidth; impedance characteristics; method of moments; numerical electromagnetic code; radiation patterns; unidirectional beam; wideband unidirectional antenna; Antenna measurements; Antenna radiation patterns; Bandwidth; Broadband antennas; Electromagnetic measurements; Electromagnetic radiation; Impedance measurement; Moment methods; Numerical simulation; Reflector antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings

Print_ISBN

0-7803-9433-X

Type

conf

DOI

10.1109/APMC.2005.1606964

Filename

1606964