Title :
Experimental study of broadband dual-frequency circular patch antennas
Author_Institution :
Dept. of Electron. Commun. Eng., Nat. Kaohsiung Inst. of Marine Technol., Taiwan
Abstract :
A novel design of a slot-loaded circular microstrip antenna with broadband dual-frequency operation is proposed and experimentally studied. The two operating bands of the proposed antenna are of the same polarization planes and also have similar radiation characteristics. The proposed dual-frequency design can also provide a tunable range of about 1.28 to 1.59 for the frequency ratio of the center frequencies of the two operating bands. For constructed prototypes studied here, wide impedance bandwidths of about 7.0 to 9.6 % for the lower band and 16.1 to 24.4 % for the higher band are obtained.
Keywords :
antenna radiation patterns; electromagnetic wave polarisation; microstrip antenna arrays; multifrequency antennas; slot antenna arrays; antenna radiation characteristics; broadband antenna; circular microstrip antenna; dual-frequency antenna; impedance bandwidth; patch antennas; polarization planes; slot-loaded microstrip antenna; tunable range; Bandwidth; Broadband antennas; Feeds; Frequency; Impedance; Microstrip antenna arrays; Microstrip antennas; Patch antennas; Resonance; Slot antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2001. IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7070-8
DOI :
10.1109/APS.2001.959405
