Title :
A novel approach for gain and bandwidth enhancement of patch antennas
Author :
Qian, Yongxi ; Sievenpiper, Dan ; Radisic, Vesna ; Yablonovitch, Eli ; Itoh, Tatsuo
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
The microstrip patch is one of the most preferred antenna structures for low-cost and compact design of wireless communication systems and RF sensors. To overcome several intrinsic limitations of the patch antenna such as narrow bandwidth, low gain, and degradation of radiation efficiency at higher frequencies, we propose a novel technique for gain and bandwidth enhancement based on the photonic band-gap (PBG) concept. The Ku-band prototype demonstrates over 3 times bandwidth improvement, and 1.6 dB higher gain or 45% increase in effective radiated power (ERP), compared with a regular patch with identical dimensions. System design issues such as co-site interference can also be alleviated by the improved beam patterns of the new PBG antenna
Keywords :
antenna radiation patterns; microstrip antennas; photonic band gap; 1.6 dB; 14.15 GHz; Ku-band prototype; PBG concept; RF sensors; antenna structures; bandwidth enhancement; beam patterns; co-site interference; effective radiated power; gain enhancement; microstrip patch; patch antennas; photonic band-gap; radiation efficiency; wireless communication; Bandwidth; Degradation; Microstrip antennas; Optoelectronic and photonic sensors; Patch antennas; Photonic band gap; Prototypes; Radio frequency; Sensor systems; Wireless communication;
Conference_Titel :
Radio and Wireless Conference, 1998. RAWCON 98. 1998 IEEE
Conference_Location :
Colorado Springs, CO
Print_ISBN :
0-7803-4988-1
DOI :
10.1109/RAWCON.1998.709176
