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Remote radio head unit system with wideband power amplifier and method

  • US 20110158081A1
  • Filed: 12/21/2010
  • Published: 06/30/2011
  • Est. Priority Date: 12/21/2009
  • Status: Active Grant
First Claim
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1. An interference cancellation system for improving isolation between transmitters and receivers in wireless communications systems comprisingan input signal suitable for wireless transmission,at least one power amplifier for receiving the input signal and providing an amplified output,feedback sensor for providing a feedback signal representative of at least an interference characteristic of the amplified output,cancellation logic for receiving the feedback signal and generating an anti-phase signal corresponding to the interference characteristic of the amplified output,a received signal including the interference characteristic, andcombiner for combining the anti-phase signal with the received signal for removing the interference characteristic from the received signal.

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