Communications: radio wave antennas – Antennas – With lumped reactance for loading antenna
Patent
1996-09-16
1998-12-08
Wong, Don
Communications: radio wave antennas
Antennas
With lumped reactance for loading antenna
343700MS, 343846, H01Q 900, H01Q 138
Patent
active
058476822
ABSTRACT:
A top loaded antenna is provided that is composed of a triangular-shaped resonator and a dielectric substrate. The triangular-shaped resonator is located on a first plane with its top connected a vertical rectangular strip and its bottom connected to a microstrip feed line through a smooth tapering strip. There is one grounded strip on both sides of the smooth tapering strip in parallel to the rectangular strip load, where each grounded strip is connected to a grounded metallic plate on a second plane through a plurality of via holes. The present invention utilizes the top loading technique and the smooth tapering technique to create the design of a compact and built-in antenna which will provide a planar antenna structure with broad bandwidth and high radiation efficiency. The inventive antenna has a very even radiation field on the horizontal plane and is thus ideal for the radio transceiver used in mobile communications.
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Lebbar, H. and others: Analysis and size reduction of various printed monopoles with different shapes; in: Electronics Letters, Oct. 13, 1994, vol. 30, No. 21, pp. 1725 to 1726.
Ho Tan
Wong Don
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