DocumentCode :
877023
Title :
Characterization of the Input Impedance of the Inset-Fed Rectangular Microstrip Antenna
Author :
Hu, Ying ; Jackson, David R. ; Williams, Jeffery T. ; Long, Stuart A. ; Komanduri, Varada Rajan
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Houston, Houston, TX
Volume :
56
Issue :
10
fYear :
2008
Firstpage :
3314
Lastpage :
3318
Abstract :
The input impedance and radiation pattern of the inset-fed rectangular microstrip patch antenna are investigated. It is concluded that a shifted cosine-squared function describes well the variation of the resonant input resistance with the feed location (point of contact between the microstrip feed line and the notch) for a given patch and substrate geometry. The parameters of the shifted cosine-squared function depend on the notch width for a given patch and substrate geometry. The cross-polarization level is seen to increase as either the notch width or depth increases. However, for a fixed input resistance level, the notch depth decreases as the width increases, so that the cross-polarization level is not very sensitive to the notch width for a fixed input resistance.
Keywords :
antenna radiation patterns; microstrip antennas; antenna radiation pattern; cross-polarization level; input impedance; inset-fed rectangular microstrip antenna; notch width; shifted cosine-squared function; Antenna radiation patterns; Coaxial components; Contact resistance; Feeds; Geometry; Impedance; Microstrip antennas; Patch antennas; Planar transmission lines; Resonance; Inset-feed; microstrip antenna; rectangular patch;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2008.929532
Filename :
4636832
Link To Document :
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