Conference Paper

FDTD analysis of a compact, H-shaped microstrip patch antenna

Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore
DOI: 10.1109/APS.2001.958899 Conference: Antennas and Propagation Society International Symposium, 2001. IEEE, Volume: 1
Source: IEEE Xplore

ABSTRACT The characteristics of a small antenna using an H-shaped
microstrip patch are studied. Significant reduction of antenna size can
be realized when the H-shaped patch is used instead of the conventional
rectangular microstrip patch antenna. The theoretical analysis is
carried out based on the finite-difference time-domain (FDTD) method.
The FDTD programs are developed and validated by available measurement
results. The effects of various antenna parameters on the resonant
frequency and radiation patterns are shown. Several design curves are
presented and the electric current distributions on the patch and ground
plane are described. This antenna is suitable for applications where
small size and broad beamwidth are required

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    ABSTRACT: In the present paper notch loaded shorted microstrip patch antenna has been analysed using cavity model. The proposed antenna shows dual band operation which depends on notch dimensions as well as shorting wall. The frequency ratio is found to be 1.5278 for the notch loaded rectangular patch, while in notch loaded shorted patch, the frequency ratio varies from 2.9764 to 2.725 for increasing value of notch width and it is almost invariant with notch depth. Further a slot loaded shorted patch antenna shows the dual frequency nature with the frequency ratio 1.7. The theoretical results are compared with IE3D simulation as well as reported experimental results.