Radar exciter including phase compensation of the waveform...

Details Radar exciter including phase compensation of the waveform... Radar exciter including phase compensation of the waveform...

2004-11-05

2009-08-04

Tarcza, Thomas H (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Testing or calibrating of radar system

By monitoring

C342S100000, C342S173000

Reexamination Certificate

active

07570201

ABSTRACT:
Phase compensation for the phase non-linearities introduced by the filters, amplifiers, and other microwave devices included in waveform generators in a radar system is achieved by first measuring the phase errors over a predetermined frequency range which are then fed to a pair of digital random access memories (RAMs), whereupon phase predistortion commands for both the local oscillator signal used to generate the RF transmit signal and the phase non-linearity in the RF transmit signal itself are called up and applied by first applying a predistortion phase shift to the local oscillator signal when it is being generated and secondly by applying a second predistortion phase shift when the RF transmit signal is being generated.

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