Compact receiver system with antijam and antispoof capability
AssigneeEagle Technology, LLC
InventorsFrancis E. Parsche, Kenneth J. Hendrickson
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Abstract
A signal-of-interest is received by using a first and second planar electrically conductive disc to define an antenna. The antenna produces RF signal outputs at three output ports Ex, Ey and Ez, each having a different associated gain pattern and polarization response. At least one null is automatically asserted in a pattern defined by the antenna in a specified direction by selectively weighting a gain and a phase of the RF signals respectively produced from the three output ports and then combining the RF signals to produce a first receiver signal output.
Claims24
A method for selectively receiving a signal-of-interest, comprising:
- using a first planar electrically conductive disc and a second planar electrically conductive disc concentric to and spaced apart from the first planar electrically conductive disc, to define an antenna which produces RF signal outputs at three output ports Ex, Ey and Ez, each having a different associated gain pattern and polarization response;
- automatically asserting at least one null in a pattern defined by the antenna in a specified direction by selectively modifying a gain and a phase of the RF signals respectively produced from the three output ports in accordance with a first set of weighting parameters to obtain a first plurality of weighted RF signals, and then combining the first plurality of weighted RF signals to produce a first receiver signal output.
An antijam antispoofing precision timing and navigation (PNT) system, comprising:
- an antenna including a first planar electrically conductive disc and a second planar electrically conductive disc concentric to and spaced apart from the first planar electrically conductive disc, the antenna including three output ports Ex, Ey and Ez each having a different associated gain pattern and polarization response;
- a signal processing system coupled to the antenna configured to assert at least one null in a pattern defined by the antenna in a specified direction by selectively modifying a gain and a phase of RF signals respectively produced from the three output ports in accordance with a first set of weighting parameters to produce a first plurality of weighted RF signals, and combining the first plurality of weighted RF signals to produce a first receiver signal output.
Dependencies are inferred from the claim text.