Frequency control circuit for swept frequency oscillator

Details Frequency control circuit for swept frequency oscillator Frequency control circuit for swept frequency oscillator

1992-03-16

1992-12-29

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Search sweep of oscillator

331178, 342200, H03B 2300

Patent

active

051755092

ABSTRACT:
Linearizing circuitry for an FMCW transmitter (1,2) employing a linear modulation waveform. The output signal is sampled (3,4,5) in successive intervals, small compared to the modulation period, and a cycle count (16) taken in each interval; a reference count is derived for each interval, either by way of a look-up table (21) triggered by a clock count (17) or derived by way of a clock driven processor (18). A comparison (20) is made and any error (22) is used to control (11) the phase of the modulation waveform.

REFERENCES:
patent: 4342007 (1982-07-01), Elliott
patent: 4499435 (1985-02-01), Thomson et al.

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