Title :
The figure of merit of an open-rising microstrip antenna
Author :
Sultan, Mohammed A.
Abstract :
A closed-form expression for the total stored energy of an open-ring structure is derived and used to determine the corresponding figure of merit in terms of the antenna gain-bandwidth product. The gain is proportional to the input impedance at resonance R/sub 0/ and the bandwidth is inversely proportional to the total quality factor Q/sub T/ of the antenna. The results for the antenna R/sub 0//Q/sub T/ figure are shown for the TM/sub 11/ mode and the TM/sub 12/ modes. They indicate that different structures can have the same R/sub 0//Q/sub T/ figure.<>
Keywords :
antenna theory; microstrip antennas; TM/sub 11/ mode; TM/sub 12/ modes; antenna gain-bandwidth product; closed-form expression; figure of merit; input impedance; microstrip antenna; open-ring structure; total quality factor; total stored energy; Antenna theory; Bandwidth; Impedance; Magneto electrical resistivity imaging technique; Microstrip antennas; Microstrip resonators; Optical ring resonators; Q factor; Resonance; Resonant frequency;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1989. AP-S. Digest
Conference_Location :
San Jose, CA, USA
DOI :
10.1109/APS.1989.134717
