High-frequency oscillator, high-frequency transmission-reception apparatus using the same, radar apparatus, and radar-apparatus-equipped vehicle and small boat equipped with the same
First Claim
1. A high-frequency oscillator comprising:
- a high-frequency oscillation element for generating high-frequency signals;
a variable-capacitance element of which capacitance changes by applying a bias voltage;
a resonator connected to the high-frequency oscillation element, of which oscillation frequency changes along with the change of the capacitance of the variable-capacitance element; and
a bias supply circuit connected to the variable-capacitance element, for supplying a bias voltage to be applied to the variable-capacitance element the bias supply circuit including a pre-set variable resistor for regulating the bias voltage.
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Accused Products
Abstract
A high-frequency oscillator that can tune oscillation characteristics is provided. A high-frequency oscillator includes a Gunn diode serving as a high-frequency oscillation element that generates high-frequency signals, a resonator connected to the Gunn diode, a varactor diode serving as a variable-capacitance element that is disposed on the resonator and changes a resonance frequency, and a bias supply circuit that is connected to the varactor diode and supplies a bias voltage applied in order to change a capacitance. The bias supply circuit includes a trimmable chip resistor serving as a pre-set variable resistor that regulates a bias voltage applied to the varactor diode. By regulating the resistance value of the trimmable chip resistor, it is possible to control the capacitance value of the varactor diode and tune oscillation characteristics to a desired state.
21 Citations
19 Claims
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1. A high-frequency oscillator comprising:
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a high-frequency oscillation element for generating high-frequency signals;
a variable-capacitance element of which capacitance changes by applying a bias voltage;
a resonator connected to the high-frequency oscillation element, of which oscillation frequency changes along with the change of the capacitance of the variable-capacitance element; and
a bias supply circuit connected to the variable-capacitance element, for supplying a bias voltage to be applied to the variable-capacitance element the bias supply circuit including a pre-set variable resistor for regulating the bias voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification