Oscillator circuit
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsLars Aspemyr, Harald Jacobsson
Life of this patent
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Abstract
The present invention relates to an oscillator circuit having a resonant element, an active element, a feedback loop, and an additional loop comprising a phase shifting element.
Claims21
An oscillator circuit comprising a resonant element, an active element, a feedback loop, and an additional feedback loop comprising a phase shifting element, wherein said resonant element is connected to a drain of said active element, and said feedback loop is connected to a gate of said active element and the resonant element, and said additional feedback loop is connected between the drain and the gate of said active element.
A method of providing an oscillator with fast switching characteristics and current pulse optimization, the method comprising the steps of:
- arranging an oscillator circuit with a resonant element, an active element and a feedback loop, and
- providing said oscillator circuit with an additional feedback loop comprising a phase shifting element, wherein said resonant element is connected to a drain of said active element, and said feedback loop is connected to a gate of said active element and the resonant element, and said additional feedback loop is connected between the drain and the gate of said active element.
An electrical circuit comprising an oscillator circuit comprising a resonant element, an active element, a feedback loop, and an additional feedback loop comprising a phase shifting element, wherein said resonant element is connected to a drain of said active element, and said feedback loop is connected to a gate of said active element and the resonant element, and said additional feedback loop is connected between the drain and the gate of said active element.
An oscillator circuit comprising:
- a supply voltage;
- a first transistor and a second transistor;
- a first resonant element and a second resonant element, where the first resonant element and the second resonant element each have a first common terminal fed from the supply voltage and second terminals connected to drains of the first and second transistors, respectively;
- a first feedback element connected between the drain of the first transistor and a gate of the second transistor;
- a second feedback element connected between the drain of the second transistor and a gate of the first transistor;
- a first feedback connected between the drain and the gate of the first transistor;
- a second feedback connected between the drain and the gate of the second transistor.
An oscillator circuit comprising:
- a first transistor, a second transistor, a third transistor and a fourth transistor;
- the first and third transistors having drains connected to gates of the second and fourth transistors;
- the second and fourth transistors having drains connected to gates of the first and third transistors;
- a resonant element having a first end connected to the drains of the first and third transistors and a second end connected to the drains of the second and fourth transistors;
- a supply voltage source connected to sources of the third and fourth transistors;
- a first feedback element connected between the drains and the gates of the first and third transistors;
- and
- a second feedback element connected between the drains and the gates of the second and fourth transistors.
Dependencies are inferred from the claim text.