Title :
Broad band patch antennas using a wedge-shaped air dielectric substrate
Author_Institution :
Florida Inst. of Technol., Melbourne, FL, USA
Abstract :
In this paper, a wedge-shaped air dielectric patch antenna is analyzed using H-P HFSS to determine the impedance and radiation characteristics. The model data are compared with experimental data measured in our laboratory. This antenna provides improved performance that is desirable in a personal communication (cellular and PCS) handsets. The use of the antenna in the handset can reduce the electromagnetic field levels from the antenna to the head since the beam pattern of the antenna is directed away from the head of users when this dielectric shape is used. Another advantage of the antenna is increased bandwidth. The bandwidth is significantly improved compared to normal dielectric microstrip patch antennas.
Keywords :
antenna radiation patterns; antenna testing; biological effects of fields; cellular radio; dipole antennas; electric impedance; microstrip antennas; mobile antennas; personal communication networks; telephone sets; H-P HFSS; PCS handset; antenna beam pattern; bandwidth; biological effects; broadband patch antennas; cellular handset; dielectric microstrip patch antennas; dielectric shape; dipole antenna; electromagnetic field levels; experimental data; head; impedance characteristics; model data; personal communication handsets; radiation characteristics; wedge-shaped air dielectric substrate; Antenna measurements; Bandwidth; Dielectric measurements; Electromagnetic fields; Electromagnetic measurements; Impedance; Laboratories; Patch antennas; Personal communication networks; Telephone sets;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1999. IEEE
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-5639-x
DOI :
10.1109/APS.1999.789465
