METHODS AND APPARATUS FOR REDUCING RADIO FREQUENCY INTERFERENCE FOR COLLOCATED ANTENNAS
First Claim
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1. An apparatus, comprising:
- a first conductive layer;
a dielectric layer proximate the first conductive layer; and
a second conductive layer substantially parallel to the first conductive layer and proximate the dielectric layer so that the first and second conductive layers sandwich the dielectric layer to create a resonant cavity for reducing radio frequency interference between a collocated first antenna and a second antenna operating in a first frequency band.
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Abstract
Methods and apparatus for a plate to prevent energy from a first antenna from interfering with a collocated second antenna. In one embodiment, the plate includes first and second conductive layers to shadow the second antenna and thereby block energy from reaching the second antenna. A resonant quarter wavelength spacing of the plates forces energy broadside minimizing the spillover the edge caused by diffraction. Multiple conductive layers having increasing radii can block diffracted energy from spilling over and around the plate. The multiple plates of increasing radii affect a waterfall-like spill wherein energy is lost in each level.
12 Citations
20 Claims
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1. An apparatus, comprising:
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a first conductive layer;
a dielectric layer proximate the first conductive layer; and
a second conductive layer substantially parallel to the first conductive layer and proximate the dielectric layer so that the first and second conductive layers sandwich the dielectric layer to create a resonant cavity for reducing radio frequency interference between a collocated first antenna and a second antenna operating in a first frequency band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An antenna installation system, comprising:
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a first antenna;
a second antenna collocated with the first antenna; and
a plate optically shadowing the second antenna from the first antenna, wherein the plate comprises;
a first conductive layer;
a dielectric layer proximate the first conductive layer; and
a second conductive layer substantially parallel to the first conductive layer and proximate the dielectric layer so that the first and second conductive layers sandwich the dielectric layer to create a resonant cavity for reducing radio frequency interference between a collocated first antenna and a second antenna operating in a first frequency band. - View Dependent Claims (13, 14, 15)
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16. A method, comprising:
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providing a first conductive layer;
providing a dielectric layer proximate the first conductive layer;
providing a second conductive layer substantially parallel to the first conductive layer and proximate the dielectric layer so that the first and second conductive layers sandwich the dielectric layer to create a resonant cavity for reducing radio frequency interference between a collocated first antenna and a second antenna operating in a first frequency band. - View Dependent Claims (17, 18, 19, 20)
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Specification