Multimode frequency multiplier
AssigneeQUALCOMM Incorporated
InventorsYan Zhang, Yunliang Zhu, Yiwu Tang
Life of this patent
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Abstract
This disclosure describes apparatuses, methods, and techniques for implementing a multimode frequency multiplier. In example implementations, an apparatus for generating a frequency includes a multimode frequency multiplier. The multimode frequency multiplier includes a multiphase generator and a reconfigurable frequency multiplier. The multiphase generator is configured to produce a first signal including multiple phase components and having a first frequency. The reconfigurable frequency multiplier is coupled in series with the multiphase generator. The reconfigurable frequency multiplier is configured to produce a second signal based on the first signal and having a second frequency that is a multiple of the first frequency.
Claims33
An apparatus for generating a frequency, the apparatus comprising:
- a multimode frequency multiplier comprising:
- a multiphase generator configured to produce a first signal comprising multiple phase components and having a first frequency;
- and
- a reconfigurable frequency multiplier coupled in series with the multiphase generator, the reconfigurable frequency multiplier configured to produce a second signal based on the first signal and having a second frequency that is a multiple of the first frequency, the reconfigurable frequency multiplier comprising:
- a Gilbert cell comprising a plus portion, a minus portion, a first stage, and a second stage;
- and
- a switch coupled between the plus portion and the minus portion of the Gilbert cell, the switch coupled between the first stage and the second stage of the Gilbert cell via the plus portion and the minus portion of the Gilbert cell.
An apparatus for generating a frequency, the apparatus comprising:
- means for generating a first signal comprising multiple phase components and having a first frequency based on an oscillation signal having an oscillation frequency;
- and
- means for multiplying, based on a factor of multiple factors, the first frequency of the first signal to produce a second signal having a second frequency that is a multiple of the first frequency, the means for multiplying comprising:
- means for transforming a frequency doubler circuit into a frequency tripler circuit.
A method for generating a frequency, the method comprising:
- propagating an oscillation signal having an oscillation frequency through a multimode frequency multiplier to produce a first signal having a first frequency, comprising:
- generating multiple phase components having a third frequency;
- and
- multiplying the third frequency by a first factor of multiple factors, the first frequency based on the third frequency and the first factor;
- changing a state of at least one switch of the multimode frequency multiplier, the at least one switch coupled between a plus portion and a minus portion of a Gilbert cell, the at least one switch coupled between a first stage and a second stage of the Gilbert cell via the plus portion and the minus portion of the Gilbert cell;
- and
- propagating the oscillation signal having the oscillation frequency through the multimode frequency multiplier to produce a second signal having a second frequency based on the changing of the state, comprising:
- generating the multiple phase components having the third frequency;
- and
- multiplying the third frequency by a second factor of the multiple factors, the second frequency based on the third frequency and the second factor.
An apparatus for generating a frequency, the apparatus comprising:
- a multimode frequency multiplier comprising:
- a multiphase generator configured to produce a first signal comprising multiple phase components and having a first frequency;
- and
- a reconfigurable frequency multiplier coupled in series with the multiphase generator, the reconfigurable frequency multiplier configured to produce a second signal based on the first signal and having a second frequency that is a multiple of the first frequency, the reconfigurable frequency multiplier comprising:
- a first transistor;
- a second transistor;
- a third transistor coupled between the first transistor and a plus output of the reconfigurable frequency multiplier;
- a fourth transistor coupled between the first transistor and a minus output of the reconfigurable frequency multiplier;
- a fifth transistor coupled between the second transistor and the plus output of the reconfigurable frequency multiplier;
- a sixth transistor coupled between the second transistor and the minus output of the reconfigurable frequency multiplier;
- and
- a switch coupled between the first transistor and the second transistor.
Dependencies are inferred from the claim text.