Wideband phase locked loop tracking oscillator for radio altimet

Details Wideband phase locked loop tracking oscillator for radio altimet Wideband phase locked loop tracking oscillator for radio altimet

1982-08-04

1985-03-05

Laroche, Eugene R.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Search sweep of oscillator

331 16, 331 17, 331 36C, 331179, 343 12A, H03L 708, H03L 710, G01S 1308, H03B 2300

Patent

active

045034010

ABSTRACT:
A wideband phase locked loop oscillator (PLLO) for tracking the frequency of an altitude signal in an FM/CW type radio altimeter. The phase locked loop oscillator conventionally includes a voltage controlled oscillator (VCO), a phase comparator for comparing the phase of the altitude signal to be tracked with the phase of the VCO output and an error signal amplifier for applying the output of the phase comparator as control voltage to the VCO. The frequency range of the PLLO is extended by changing the natural frequency of the VCO in steps spanning the useful frequency range of the altitude signal. Selection of the proper value of VCO natural frequency is effected through microprocessor directed digital control.

REFERENCES:
patent: 4156205 (1979-05-01), Kadin et al.
patent: 4262264 (1981-04-01), Vandegraaf
patent: 4305045 (1981-12-01), Metz et al.
patent: 4330758 (1982-05-01), Swisher et al.
patent: 4375693 (1983-03-01), Kuhn

Affiliated with

Also associated with

Rating

Wideband phase locked loop tracking oscillator for radio altimet does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wideband phase locked loop tracking oscillator for radio altimet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wideband phase locked loop tracking oscillator for radio altimet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1736795