Choke-slot ground plane and antenna system
First Claim
Patent Images
1. An antenna system, comprising:
- a monopole antenna;
a ground plate having a plurality of concentric annular grooves; and
means for attaching said monopole antenna to said ground plate.
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Abstract
A choke-slot ground plane and antenna system 30 is disclosed. In one embodiment the choke-slot ground plane and antenna system 30 includes a monopole antenna 44, a ground plate 36 having a plurality of concentric annular grooves 38a-c. Other embodiments include a ground plane 36 having varying size grooves to 38a-l, a ground plane having grooves having filled with dielectric material 38a'"'"'-c'"'"', a ground plate having a broadened bandwidth and having a series of first and second-type grooves 34a-c and 38a"-c", and a ground plate having a frusto-conical shape 36a and 36b.
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Citations
17 Claims
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1. An antenna system, comprising:
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a monopole antenna; a ground plate having a plurality of concentric annular grooves; and means for attaching said monopole antenna to said ground plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An antenna system, comprising:
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a monopole antenna; a ground plate having a plurality of closed grooves, said grooves having a common axis; and moving means, insulating said monopole antenna and ground plate, for moving said monopole along said common axis. - View Dependent Claims (11, 12, 13)
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14. An antenna system, comprising:
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a monopole antenna; a ground plate having a frusto-conical shape; a plurality of concentric annular grooves formed on said ground plate; and means for movably attaching said monopole antenna to said ground plate. - View Dependent Claims (15, 16, 17)
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Specification