System and method for intermodulation distortion cancellation
AssigneeRaytheon Company
InventorMarlin Smith
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Abstract
A linearizer for reducing intermodulation distortion in a non-linear device. The novel linearizer includes an input port for receiving a signal from the device and a circuit for effecting gain expansion on the signal that counteracts a gain compression of the device. In an illustrative embodiment, the circuit includes a starved limiter in shunt with the device, implemented using a pair of biased diodes D1 and D2. The first diode D1 is connected to ground and the second diode D2 is coupled to the signal. In an alternate embodiment, the linearizer also includes a second pair of biased diodes D3 and D4, D3 connected to ground and D4 coupled to the signal, and a plurality of reactive elements for increasing the operational bandwidth of the linearizer.
Claims34
A linearizer for reducing intermodulation distortion in a non-linear device comprising:
- first means for receiving a signal from said device and
- second means for effecting a gain expansion on said signal.
A linearizer comprising:
- an input port for receiving a signal and
- a starved limiter in shunt with said signal.
A method for reducing intermodulation distortion in a non-linear device including the steps of:
- receiving a signal from said device and
- effecting a gain expansion on said signal that counteracts a gain compression of said device.
Dependencies are inferred from the claim text.