Shaping near-field transmission signals

摘要

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.

主权项

1. A method comprising:
estimating a coupling condition of an antenna; shaping, based on the coupling condition of the antenna, a baseband data signal; modulating a radio frequency (RF) carrier signal with the shaped baseband data signal to provide a shaped transmission signal; 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; updating the coupling condition of the antenna; and dynamically adjusting the shaped transmission signal while the shaped transmission signal is applied to the antenna, the adjusting responsive to a changed coupling condition.