Modulator
AssigneeQUALCOMM Incorporated
InventorsEfthymios Philip Papageorgiou, Ara Bicakci, Sean Joel Lyn, Yue Lu, Ngar Loong Alan Chan
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Abstract
A modulator may include a controller configured to receive in-phase (I) baseband signals and quadrature-phase (Q) baseband signals. The controller may be configured to select a section of a region defined by a number of local oscillator (LO) phases. The controller may be configured to output multiple control signals and a pair of phase selection signals. The modulator may further include multiple output stages. Each output stage may be coupled to the controller to receive a pair of the control signals, the pair of phase selection signals, and multiple offset LO signals. Each of the output stages may include a unit element.
Claims21
A modulator, comprising:
- a controller configured to receive in-phase (I) baseband signals and quadrature-phase (Q) baseband signals, the controller configured to select a section of a region defined by a number of local oscillator (LO) phases, the controller configured to output a plurality of control signals and a pair of phase selection signals;
- and
- a plurality of output stages, each of the plurality of output stages coupled to the controller to receive a pair of the plurality of control signals, the pair of phase selection signals, and a plurality of offset LO signals, each of the plurality of output stages comprising a unit element.
A digital modulation method, comprising:
- receiving incoming in-phase (I) and quadrature-phase (Q) baseband signals;
- selecting two of eight or more local oscillator (LO) phases based at least in part on a section of a region corresponding to the baseband signals;
- selecting a magnitude for each selected local oscillator phase based on the section, the selected magnitudes representing the baseband signals;
- and
- generating a radio frequency (RF) signal based at least in part on the selected magnitudes and phases.
A modulator, comprising:
- means for receiving in-phase (I) baseband signals and quadrature-phase (Q) baseband signals;
- means for selecting a section of a region defined by a number of local oscillator (LO) phases;
- means for outputting a plurality of control signals and a pair of phase selection signals;
- and
- a plurality of output stages, each of the plurality of output stages coupled to the outputting means to receive a pair of the plurality of control signals, the pair of phase selection signals, and a plurality of offset LO signals, each of the plurality of output stages comprising a unit element.
Dependencies are inferred from the claim text.