Methods and devices for reducing radio frequency interference
First Claim
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1. A device for reducing interference in wireless signals comprising:
- a plurality of antennae;
a signal detector;
a processing unit;
a signal modifier; and
at least one stage connected to said plurality of antennae, said at least one stage being at least one of;
a field nulling stage connected to said plurality of antennae, wherein one of the plurality of antennae is a receiving antenna, wherein another of the plurality of antennae is a transmitting antenna, and wherein said field nulling stage comprises a return signal receiving circuit and a communications antenna signal delay element; and
a signal cancelling stage connected to said plurality of antennae, and wherein said signal cancelling stage comprises a signal combiner for combining a first antenna signal modified with respect to at least one of amplitude and phase and a second antenna signal modified with respect to at least one group delay,wherein said at least one stage, said signal detector, said processing unit and said signal modifier provide a signal-to-noise-ratio enhanced signal to a receiver.
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Abstract
Devices and methods for selectively reducing interference in wireless signals through field nulling and signal cancelling by signal agnostic, intrinsically stable, analytic means.
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Citations
17 Claims
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1. A device for reducing interference in wireless signals comprising:
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a plurality of antennae; a signal detector; a processing unit; a signal modifier; and at least one stage connected to said plurality of antennae, said at least one stage being at least one of; a field nulling stage connected to said plurality of antennae, wherein one of the plurality of antennae is a receiving antenna, wherein another of the plurality of antennae is a transmitting antenna, and wherein said field nulling stage comprises a return signal receiving circuit and a communications antenna signal delay element; and a signal cancelling stage connected to said plurality of antennae, and wherein said signal cancelling stage comprises a signal combiner for combining a first antenna signal modified with respect to at least one of amplitude and phase and a second antenna signal modified with respect to at least one group delay, wherein said at least one stage, said signal detector, said processing unit and said signal modifier provide a signal-to-noise-ratio enhanced signal to a receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for reducing interference in wireless signals comprising the steps of:
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receiving a plurality of RFI burdened signals; modifying at least one received RFI burdened signal; providing at least one of; field nulling with respect to said at least one received RFI burdened signal conducted by transmitting a receiving antenna signal that has been modified with respect to at least one of amplitude and phase to establish a nulling field proximate a communications antenna, which nulling field is substantially amplitude equivalent to and anti-phase with respect to RFI content of a second field generated proximate communications antenna by an RFI burdened signal; and signal cancelling with respect to said at least one received RFI burdened signal conducted by combining a first antenna signal modified with respect to at least one of amplitude and phase and a second antenna signal modified with respect to at least one group delay; and producing a signal-to-noise-ratio enhanced signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification