Embedded surface wave antenna
First Claim
1. A broadband antenna device comprising two spaced apart conductive planar members, one member being a transition from a narrow portion to a wider portion according to a continuous function, said one member having an upward inclination away from the other of said conductive planar members and ending in a termination at the wider portion, a tapered lens material having a downward inclination from said termination toward said other of said conductive planar members to define a sloping surface therebetween for launching and receiving electromagnetic waves.
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Accused Products
Abstract
An embedded surface wave antenna is described of compact design capable of broadband performance both for impedance match and for radiation pattern characteristics comprising two spaced apart conductive planar elements, one element being a transition from a narrow portion to a wider portion according to a continuous function, said one element having an upward inclination away from the other of said conductive planar elements and ending in a termination at the wider portion, a tapered lens material having a downward inclination from said termination toward said other of said conductive planar elements to define a sloping surface therebetween for launching and receiving electromagnetic waves. The subject surface wave antenna may be readily adapted into assemblies of radiating elements in a predetermined electrical and geometric configuration to provide an array rendering a preferred radiation pattern.
249 Citations
51 Claims
- 1. A broadband antenna device comprising two spaced apart conductive planar members, one member being a transition from a narrow portion to a wider portion according to a continuous function, said one member having an upward inclination away from the other of said conductive planar members and ending in a termination at the wider portion, a tapered lens material having a downward inclination from said termination toward said other of said conductive planar members to define a sloping surface therebetween for launching and receiving electromagnetic waves.
- 15. A broadband antenna device comprising two spaced apart conductive planar members, one member being a transition from a narrow portion to a wider portion according to a continuous function, said one member having an upward inclination away from the other of said conductive planar members and ending in a termination at the wider portion, a tapered lens material having a downward inclination from said termination toward said other of said conductive planar members to define a sloping surface therebetween for launching and receiving electromagnetic waves, said tapered lens material being a material selected from the group consisting of dielectric material, lossy material and a ferrite.
- 27. A broadband antenna comprising a radiator including a ground plane and a ribbon having a flared transition from a narrow portion spaced above the ground plane to a wider portion spaced a greater distance from the ground plane, a lens member having a tapered configuration joined to said radiator, said lens member having a sloping surface inclined downwardly from the flared transition to said ground plane.
- 36. An antenna structure for receiving and transmitting electromagnetic waves comprising a conductive means comprising first and second spaced-apart planar legs, the first conductive leg having a transition from a narrow portion to a wide portion according to a function, said first and second conductive legs spreading outwardly from respective first terminations and ending into respective second terminations, and an electromagnetic lens material coupled to and filling the space between said first and second conductive legs, said material having a maximum thickness at the second terminations and a thinner thickness at the first terminations.
Specification