Title :
Microstrip patch antennas on thick substrates
Author :
Hall, P.S. ; Dahele, J.S. ; Haskins, P.M.
Author_Institution :
Wolfson RF Eng. Centre, R. Mil. Coll. of Sci., Swindon, UK
Abstract :
It is demonstrated that a thick patch with an annular gap matching capacitor is an optimum element from a practical design point of view, giving wide bandwidth operation, although at the expense of poor cross polarization. Feed inductance and radiation pattern effects are examined and a new patch equivalent circuit is developed that gives significantly improved results over the existing lumped element model.<>
Keywords :
antenna radiation patterns; electric impedance; equivalent circuits; microstrip antennas; annular gap matching capacitor; feed inductance effects; input impedance; microstrip patch antennas; patch equivalent circuit; radiation pattern effects; thick substrates; wide bandwidth operation; Bandwidth; Capacitors; Circuits; Feeds; Impedance; Inductance; Microstrip antennas; Patch antennas; Permittivity; Thickness measurement;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1989. AP-S. Digest
Conference_Location :
San Jose, CA, USA
DOI :
10.1109/APS.1989.134719
