Multifrequency microstrip antenna
First Claim
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1. Multifrequency microstrip antenna means comprising:
- (a) at least three generally circular plates of electrically conducting material mounted generally coaxially in spaced apart relationship with dielectric material therebetween;
(b) a first plate of said three plates being electrically connected to a reference potential and forming a ground plane for a first microstrip antenna resonant at a first frequency;
(c) a second plate of said three plates positioned adjacent said first plate for serving as an antenna element and forming the first microstrip antenna in conjuction with said first plate, said second plate further forming a ground plane for a second microstrip antenna resonant at a second frequency;
(d) a third plate of said three plates positioned adjacent said second plate for serving as an antenna element and forming the second microstrip antenna in conjunction with said second plate; and
(e) means connected to said second plate for feeding said first microwave antenna and means connected to said third plate for feeding said second microwave antenna, and each of said second and third plates being electrically connected to said first plate at approximately the centers thereof.
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Abstract
Three spaced apart electrically conducting discs coaxially mounted with dielectric material therebetween, one outside disc forming a ground plane and the center disc being driven by a lead through the ground plane to form a first microstrip antenna resonant at a first frequency, and the center disc forming a ground plane for the other outside disc which if fed by a lead extending through both of the other discs on a plane of zero electrical field for the second plate and along a radius orthogonal with a radius through the first lead, to form a second microstrip antenna resonant at a second frequency.
75 Citations
6 Claims
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1. Multifrequency microstrip antenna means comprising:
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(a) at least three generally circular plates of electrically conducting material mounted generally coaxially in spaced apart relationship with dielectric material therebetween; (b) a first plate of said three plates being electrically connected to a reference potential and forming a ground plane for a first microstrip antenna resonant at a first frequency; (c) a second plate of said three plates positioned adjacent said first plate for serving as an antenna element and forming the first microstrip antenna in conjuction with said first plate, said second plate further forming a ground plane for a second microstrip antenna resonant at a second frequency; (d) a third plate of said three plates positioned adjacent said second plate for serving as an antenna element and forming the second microstrip antenna in conjunction with said second plate; and (e) means connected to said second plate for feeding said first microwave antenna and means connected to said third plate for feeding said second microwave antenna, and each of said second and third plates being electrically connected to said first plate at approximately the centers thereof. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification