Title :
Single-layer capacitive feed for wideband probe-fed microstrip antenna elements
Author :
Mayhew-Ridgers, Gordon ; Odendaal, Johann W. ; Joubert, Johan
Author_Institution :
Dept. of Electr., Univ. of Pretoria, South Africa
fDate :
6/1/2003 12:00:00 AM
Abstract :
In this paper, it is shown how a single-layer capacitive feeding mechanism, consisting of a small rectangular probe-fed patch, which is capacitively coupled to the radiating element, can be used to obtain wideband operation for probe-fed microstrip antennas on thick substrates. The main advantages of this feeding mechanism are that all the elements reside on a single layer and that it is very easy to fine-tune the input impedance. Calculated as well as measured results for rectangular, circular and annular-ring geometries are included.
Keywords :
antenna feeds; antenna radiation patterns; broadband antennas; impedance matching; loop antennas; microstrip antennas; probes; substrates; annular-ring geometries; circular geometries; input impedance; microstrip antenna elements; radiating element; rectangular geometries; rectangular probe-fed patch; single-layer capacitive feed; thick substrates; wideband probe feed; Analytical models; Antenna feeds; Antennas and propagation; Attenuation; Broadband antennas; Diversity methods; Microstrip antennas; Satellite communication; Statistics; Transmission line matrix methods;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2003.812186
