Multifrequency microstrip patch antenna with parasitic coupled elements
First Claim
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1. A multi-frequency microstrip patch antenna device comprising:
- a ground-plane or ground-counterpoise;
a first conducting layer, said conducting layer acting as an active patch for the whole antenna device, said active patch being fed at least at a point of said first conducting layer;
at least two additional conducting layers acting as parasitic patches, said parasitic patches being placed underneath said active patch, at different levels between said active patch and said ground-plane or ground-counterpoise; and
wherein at least one of said at least two additional conducting layers acting as parasitic patches is not short-circuited to said ground-plane or ground-counterpoise.
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Abstract
A multifrequency microstrip patch antenna comprising an active patch and a plurality of parasitic elements placed underneath said active patch, featuring a similar behavior (impedance, directivity, gain, polarization and pattern) at multiple radiofrequency bands.
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Citations
21 Claims
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1. A multi-frequency microstrip patch antenna device comprising:
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a ground-plane or ground-counterpoise; a first conducting layer, said conducting layer acting as an active patch for the whole antenna device, said active patch being fed at least at a point of said first conducting layer; at least two additional conducting layers acting as parasitic patches, said parasitic patches being placed underneath said active patch, at different levels between said active patch and said ground-plane or ground-counterpoise; and wherein at least one of said at least two additional conducting layers acting as parasitic patches is not short-circuited to said ground-plane or ground-counterpoise. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification