Aperture coupled microstrip antenna

Communications: radio wave antennas – Antennas – Microstrip

Reexamination Certificate

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C343S748000

Reexamination Certificate

active

08081113

ABSTRACT:
A microstrip antenna is provided. The microstrip antenna includes a first substrate with a first surface and a second surface paralleled to each other, a metal ground plane with an aperture disposed on the first surface and exposing parts of the first substrate via the aperture and a metal feed line disposed on the second surface, the metal feed line has at least two intersections with the aperture on a horizontal projection plane, in order to feed a signal received or transmitted by the microstrip antenna.

REFERENCES:
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patent: 6292143 (2001-09-01), Romanofsky
patent: 2003/0052825 (2003-03-01), Rao et al.
patent: 2006/0132359 (2006-06-01), Chang et al.
patent: 1 341 258 (2003-03-01), None
patent: 1 617 513 (2006-01-01), None
patent: 62165403 (1987-07-01), None
K.F.Lee et al., “Annular-Ring and Circular-Disc Microstrip Antennas With & Without Air Gaps”, 13th European Microwave Conference, pp. 389-394.
Eli Aloni et al., “Analysis of a Dual Circularly Polarized Microstrip Antenna Fed by Crossed Slots”, IEEE Transactions on Antennas and Propagation, vol. 42, No. 8, Aug. 1994, pp. 1053-1058.
Yi-Lung Lee et al., “Ring-Slot-Coupled Microstrip Patch Antenna for Circular Polarization”, Microwave and Optical Technology Letters, vol. 44, No. 5, Mar. 5, 2005, pp. 453-456.
Jeen-Sheen Row, “Design of Aperture-Coupled Annular-Ring Microstrip Antennas for Circular Polarization”, IEEE Transactions on Antennas and Propagation, vol. 53, No. 5, May 2005, pp. 1779-1784.
I.J. Bahl et al., “A New Microstrip Radiator for Medical Applications”, IEEE Transactions on Microwave Theory and Techniques, vol. MTT-28, No. 12, Dec. 1980, pp. 1464-1468.
Sami M. Ali, Vector Hankel Transform Analysis of Annular-Ring Microstrip Antenna, IEEE Transactions on Antennas and Propagation, vol. AP-30, No. 4, Jul. 1982, pp. 637-644.

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