High efficiency quarter-wave transformer
AssigneeHarris Corporation
InventorsWilliam D. Killen, Randy T. Pike
Life of this patent
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Abstract
A circuit for processing radio frequency signals. The circuit includes a substrate where the circuit can be placed. The substrate can be a meta material and can incorporate at least one dielectric layer. A quarter-wave transformer and at least one ground can be coupled to the substrate. The dielectric layer can include a first region with a first set of substrate properties and a second region with a second set of substrate properties. Substrate properties can include a permittivity and a permeability. A substantial portion of the quarter-wave transformer can be coupled to the second region. The permittivity and/or permeability of the second region can be higher than the permittivity and/or permeability of the first region.
Claims9
A circuit board for processing radio frequency signals, comprising:
- a substrate including at least one dielectric layer, said dielectric layer having a first region and at least a second region, said first region having a first set of substrate properties and said second region having a second set of substrate properties, said second set of substrate properties being different than said first set of substrate properties;
- at least one ground plane coupled to said substrate;
- and,
- a quarter-wave transformer coupled to said substrate;
- wherein at least a portion of said quarter-wave transformer is coupled to said second region.
Dependencies are inferred from the claim text.