US 2013/0154752 A1 · VOLTAGE-CONTROLLED OSCILLATOR

Abstract

A voltage-controlled oscillator circuit includes a first transistor, a second transistor, a first resonator circuit, a second resonator circuit, a first current path and a second current path. A drain of the first transistor is coupled to a gate of the second transistor and to a first end of the first resonator circuit. A source of the first transistor is coupled to the first current path and to a first end of the second resonator circuit. A drain of the second transistor is coupled to a gate of the first transistor and to a second end of the first resonator circuit. A source of the second transistor is coupled to the second current path and a second end of the second resonator circuit.

Claims20

Dependent claims

A voltage-controlled oscillator (VCO) circuit comprising:

a first transistor;
a second transistor;
a first resonator circuit;
a second resonator circuit;
a first current path;
and
a second current path,
wherein
a drain of the first transistor is coupled to a gate of the second transistor and to a first end of the first resonator circuit;
a source of the first transistor is coupled to the first current path and to a first end of the second resonator circuit;
a drain of the second transistor is coupled to a gate of the first transistor and to a second end of the first resonator circuit;
and
a source of the second transistor is coupled to the second current path and to a second end of the second resonator circuit.

10 more elements

A method comprising:

causing a first resonator circuit of a voltage-controlled oscillator (VCO) circuit to provide an oscillation frequency for the VCO circuit;
causing a second resonator circuit to serve as an electrical short circuit at the oscillation frequency of the VCO circuit;
and
at a frequency different from the oscillation frequency of the VCO circuit,
causing the second resonator circuit to serve as an electrical open circuit,
causing a first current of the VCO circuit to flow through a first current path of the VCO, and
causing a second current of the VCO circuit to flow through a second current path of the VCO circuit,
wherein
the first current is different from the second current;
and
the first current path is different from the second current path.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/325,442Filed 14 Dec 2011

Published

20 Jun 2013

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

H03B 5/1228
Active element in amplifier being semiconductor device: the amplifier comprising one or more field effect transistors
H03B 5/1212
Using multiple transistors for amplification: the amplifier comprising a pair of transistors, wherein an output terminal of each being connected…
H03B 5/124
Comprising means for varying the frequency of the generator: the means comprising a voltage dependent capacitance
H03B 5/1852
The active element in the amplifier being a semiconductor device: the semiconductor device being a field-effect device

Voltage-controlled oscillator

Life of this patent

Voltage-controlled oscillator

Life of this patent

Abstract

Claims20