Frequency feedback linearizer

Details Frequency feedback linearizer Frequency feedback linearizer

1985-01-29

1992-12-15

Tarcza, Thomas H.

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

With particular circuit

For frequency modulation

342174, 331 4, G01S 1332, G01S 740

Patent

active

051721236

ABSTRACT:
Range resolution in an FMCW radar system is achieved by providing a periodic linear frequency sweep. The present invention assures the linearity of this sweep by using a negative feedback circuit which includes means for obtaining 16 sequential instantaneous frequency versus time slope measurements during each sweep cycle, generating a set of 16 sequential error signals and a corresponding set of correction voltages, and applying these correction voltages to the sweep drive voltage used to drive the voltage controlled oscillator that generates the frequency swept output signal.

REFERENCES:
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patent: 4398275 (1983-08-01), Zehner
patent: 4417218 (1983-11-01), Berke
patent: 4468638 (1984-08-01), Kyriakos
patent: 4499435 (1985-02-01), Thompson et al.
patent: 4593287 (1986-06-01), Nitardy

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