Appeal No. 95-1186
Application No. 08/051,797
allowed.
The invention is directed to microstrip antennas. More
particularly, the invention provides for an antenna having a
plurality of substantially rectangular patches energizable at
a resonant frequency, each patch having an opposing pair of
first edges and an opposing pair of second edges corresponding
in length to the resonant frequency. The patches are disposed
on a common substrate and arranged in elemental groups with
each group having a first patch fed from a feed line and a
pair of second patches, each adjacent to and spaced from one
of the second edges of the first patch, wherein the second
patches are fed only parasitically from the first. The
spacing between groups on the substrate is such that the
spacing between patches of adjacent groups substantially
exceeds the spacing between patches within a group.
Representative independent claim 1 is reproduced as
follows:
1. An antenna comprising:
a plurality of substantially rectangular patches,
disposed upon a common substrate, each patch having a pair of
parallel first edges of length W perpendicular to another pair
of parallel second edges of length L, which dimension L
defines a corresponding resonant frequency,
2
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