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US 2014/0004794 A1Published application
Shaping Near-Field Transmission Signals
AssigneeMarvell World Trade Ltd.
InventorsMatteo Contaldo, Frederic Declercq
Life of this patent
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Abstract
The present disclosure describes apparatuses and techniques for shaping near-field transmission signals. In some aspects, a baseband data signal is shaped based on a coupling condition of an antenna. A radio frequency (RF) carrier signal is modulated with the shaped baseband data signal to provide a shaped transmission signal, which is then applied to the antenna to generate an RF field. The shaped transmission signal can be effective to reduce distortions of the RF field associated with the coupling condition.
Claims20
A method comprising:
- shaping, based on a coupling condition of an antenna, a baseband data signal;
- modulating a radio frequency (RF) carrier signal with the shaped baseband data signal to provide a shaped transmission signal;
- and
- applying the shaped transmission signal to the antenna to generate an RF field, the shaped transmission signal effective to reduce distortion of the RF field associated with the coupling condition.
1 more element
A circuit comprising:
- one or more components configured to shape, based on a coupling condition of an antenna, a baseband data signal;
- a modulator configured to modulate a radio frequency (RF) carrier signal with the shaped baseband data signal to provide a shaped transmission signal;
- and
- a transmitter configured to transmit the shaped transmission signal via the antenna to generate an RF field, the shaped transmission signal effective to reduce distortions of the RF field due to the coupling condition.
1 more element
A System-on-Chip comprising:
- a modulator configured to modulate a radio frequency (RF) carrier signal with a baseband data signal to provide a transmission signal;
- a transmitter configured to apply, through an antenna interface, the transmission signal to an antenna to produce an RF field;
- and
- a signal-shape controller configured to:
- calculate, based on a coupling condition of the antenna, parameters for shaping the baseband data signal;
- and
- shape, based on the parameters, the baseband data signal effective to provide a shaped transmission signal that, when transmitted via the antenna, creates an RF field having reduced coupling condition-related distortion.
4 more elements
Dependencies are inferred from the claim text.