Waveform generator
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United States of America Patent
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Oct 8, 1991
Grant Date -
N/A
app pub date -
Sep 4, 1990
filing date -
Sep 4, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A waveform generator (12') is responsive to a reference clock signal input for producing an output waveform which is a linear FM waveform. A reference clock signal is supplied to the generator which performs a double integration to obtain the phase of the output signal. The phase resulting from the double integration is used to obtain the sine of the phase using a lookup table. The sine of the phase is input to digital-to-analogue (D/A) converter, and the output from the D/A converter is filtered using a bandwidth matched to the bandwidth of the transmitted signal. The generator is useful in radar systems for area mapping and target identification.
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