Title :
Analysis and modification of the infinite foursquare array
Author :
Vogler, Terry R. ; Davis, William A.
Author_Institution :
US Coast Guard Acad., New London, CT, USA
Abstract :
We reexamined the infinite foursquare antenna array to determine functionally its limitation at a 1.6:1 bandwidth. Our results point to the presence of too much inter-square capacitance, acting concurrently with inter-element capacitance. Subsequent designs altered the foursquare array element to widen the bandwidth. A vertical taper in the distance to ground repeating along each element further widened the bandwidth to 4.8:1 in simulation for a circularly polarized array.
Keywords :
antenna arrays; capacitance; dielectric polarisation; circularly polarized array; foursquare array element; infinite foursquare antenna array; infinite foursquare array; inter-element capacitance; inter-square capacitance; vertical taper; Arrays; Bandwidth; Capacitance; Finite element methods; Geometry; Impedance; Resonant frequency;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4244-4967-5
DOI :
10.1109/APS.2010.5562243
