Title :
Stacked microstrip antenna with wide band and high gain
Author :
Egashira, S. ; Nishiyama, E. ; Sakitani, A.
Author_Institution :
Dept. of Electron., Saga Univ., Japan
Abstract :
A microstrip antenna composed of radiating, matching, and director elements is presented. The director element increases the gain of the antenna, while the matching element widens the frequency bandwidth of the input impedance. By adjusting the distance between the matching element and the radiating element by varying the height of the former element, the input impedance of the antenna is matched to the output impedance of the feed line. The proposed antenna, therefore, has wider impedance bandwidth and higher gain than the single-patch antenna. Since this antenna can be directly fed from the back of the ground plane, the feed circuit is simpler than that of the planar array antenna. For mobile communications, the stacked microstrip antenna array is useful when a gain of about 8 approximately 12 dBi is required.<>
Keywords :
electric impedance; impedance matching; microstrip antennas; microwave antenna arrays; mobile antennas; 8 to 12 dB; antenna array; director element; distance; feed circuit; feed line; frequency bandwidth; gain; ground plane; impedance bandwidth; input impedance; matching element; mobile communications; output impedance; radiating element; stacked microstrip antenna; wideband antenna; Antenna feeds; Bandwidth; Broadband antennas; Circuits; Frequency; Impedance matching; Microstrip antenna arrays; Microstrip antennas; Mobile communication; Planar arrays;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.
Conference_Location :
Dallas, TX, USA
DOI :
10.1109/APS.1990.115311
