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US 5,847,621 AGranted
LC osillator with delay tuning
AssigneeApplied Micro Circuits Corporation
InventorGerman R. Gutierrez
Life of this patent
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Abstract
An integrated circuit voltage-controlled oscillator includes an amplifier, a low Q LC resonator coupled to the amplifier, and a voltage-controlled variable delay element connected to delay feedback between an output and an input of the amplifier.
Claims20
A voltage controlled oscillator (VCO) for an integrated electronic circuit (IC), comprising:
- an oscillator circuit that includes an amplifier and a low Q LC resonator circuit coupled to the amplifier;
- the amplifier including an amplification section and an output section;
- and
- a variable delay controller for causing delay of feedback of an oscillator output signal from the output section to the amplification section in response to a voltage signal.
1 more element
An integrated circuit (IC), comprising;
- an oscillator loop that includes an amplifier and a low Q LC resonator circuit coupled to the amplifier;
- the amplifier including an amplification section and an output section;
- and
- a variable delay controller for causing delay of feedback of an oscillator output signal from the output section to the amplification section in response to a voltage signal.
1 more element
A monolithic integrated electronic circuit having a substrate, and circuits fabricated on the substrate, at least one of the circuits comprising:
- an amplifier with an input and an output;
- a low Q LC resonator coupled to the amplifier;
- and
- a voltage-controlled delay element connected to the input and output of the amplifier.
1 more element
Dependencies are inferred from the claim text.