Title :
Bandwidth enhancement for dual-frequency microstrip antenna with conical radiation
Author :
Lin, S.-J. ; Row, J.-S.
Author_Institution :
Nat. Changhua Univ. of Educ., Changhua
Abstract :
A design for dual-frequency microstrip antennas with conical radiation patterns is studied. The dual-frequency operation is achieved by exciting two different resonant modes of the square microstrip patch antenna with four symmetrical shorting walls. Then, a method to enhance the impedance bandwidths of the dual-frequency antenna is proposed, and the experimental results show bandwidths are increased by 19 and 31% at the lower and higher operating frequencies, respectively. Simulation analyses are also performed to support the measured results.
Keywords :
antenna radiation patterns; broadband antennas; conical antennas; microstrip antennas; multifrequency antennas; conical radiation pattern; dual-frequency square microstrip antenna; impedance bandwidth enhancement; symmetrical shorting wall;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20082353
