US 7,095,366 B2 · High-frequency oscillation apparatus, radio apparatus, and radar

Abstract

A high-frequency oscillation apparatus wherein an oscillation signal output from a voltage controlled oscillator (VCO) is transferred through a transfer line to a resonator and the resonator is excited. The resonator is coupled with a second transfer line and an RF signal having a level corresponding to the frequency of the oscillation signal is transferred through the second transfer line. When the resonant frequency of the resonator is set to a frequency higher than the oscillation-frequency modulation range of the VCO, the oscillation frequency and the RF-signal level have one-to-one correspondence. A detector detects the RF signal and outputs to a control section. The control section compensates a control voltage signal applied to the VCO according to the detected-signal level, and outputs the control voltage signal to the VCO to compensate the oscillation signal of the VCO.

Claims16

Dependent claims

A high-frequency oscillation apparatus comprising:

an oscillator for oscillating at a specific frequency determined by a control voltage signal in a predetermined frequency modulation range;
a resonator coupled with a line transferring the oscillation signal of the oscillator, for resonating at a frequency out of the predetermined frequency modulation range;
a level detector coupled with the resonator, for detecting the resonant-energy level of the resonator;
and
a control section for generating the control voltage signal according to the resonant-energy level detected by the level detector.

2 more elements

A high-frequency oscillation apparatus comprising:

an oscillator for oscillating at a specific frequency determined by a control voltage signal in a predetermined frequency modulation range;
a first resonator coupled with a line transferring the oscillation signal of the oscillator, for resonating at a frequency higher than the center of the predetermined frequency modulation range;
a second resonator coupled with the line transferring the oscillation signal of the oscillator, for resonating at a frequency lower than the center of the predetermined frequency modulation range;
a first level detector coupled with the first resonator, for detecting the resonant-energy level of the first resonator;
a second level detector coupled with the second resonator, for detecting the resonant-energy level of the second resonator;
and
a control section for generating the control voltage signal according to the difference between the resonant-energy levels detected by the first and second level detection means.

4 more elements

Dependencies are inferred from the claim text.

High-frequency oscillation apparatus, radio apparatus, and radar

Life of this patent

High-frequency oscillation apparatus, radio apparatus, and radar

Life of this patent

Abstract

Claims16