Title :
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
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;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1606964
