Implicit frequency multiplier
AssigneeNXP USA, Inc.
InventorsDenizhan Karaca, Tino Copani
Life of this patent
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Abstract
Systems and methods for an implicit frequency multiplier are described. In some embodiments, an implicit frequency multiplier may include a cross-coupled oscillator having a transistor pair, a primary coil coupled to source terminals of the transistor pair, and a secondary coil magnetically coupled to the primary coil. In another embodiment, a method may include operating a cross-coupled oscillator having a transistor pair and extracting a harmonic component of a current flowing through the cross-coupled oscillator using a transformer coupled to source terminals of the transistor pair.
Claims20
An implicit frequency multiplier, comprising:
- a cross-coupled oscillator having a transistor pair;
- a primary coil coupled to source terminals of the transistor pair;
- and
- a secondary coil magnetically coupled to the primary coil.
A circuit, comprising:
- a first portion of a primary coil coupled to a source terminal of a first transistor;
- a second portion of the primary coil coupled to a source terminal of a second transistor cross-coupled to the first transistor;
- a first portion of a secondary coil magnetically coupled to the first portion of the primary coil;
- and
- a second portion of the secondary coil magnetically coupled to the second portion of the primary coil.
A method, comprising:
- operating a cross-coupled oscillator having a transistor pair;
- and
- extracting a harmonic component of a current flowing through the cross-coupled oscillator using a transformer coupled to source terminals of the transistor pair.
Dependencies are inferred from the claim text.