Patent ID: 8687478

Claim:
A system comprising: one or more circuits for use in a transceiver, wherein: said one or more circuits comprise a filter and a leakage processing module; said filter comprises a multiband port, a first-protocol port, a second-protocol upstream port, and a second-protocol downstream port; said leakage processing module comprises a second-protocol downstream input port, a second-protocol downstream output port, a first-protocol port, and a second-protocol upstream port; and said leakage processing module is operable to: process a first-protocol signal received via said first-protocol port of said leakage processing module via a first impedance network to generate a first compensation signal; process a second-protocol signal received via said second-protocol upstream port of said leakage processing module via a second impedance network to generate a second compensation signal; process a filtered signal received from said second-protocol downstream port of said filter based at least in part on said first compensation signal and said second compensation signal; and output said processed filtered signal via said second-protocol downstream output port of said leakage processing module; and said one or more circuits are operable to: enable said leakage processing module when either or both of: a measured or estimated leakage between said first-protocol port of said filter and said second-protocol downstream port of said filter is above a threshold, and a measured or estimated leakage between said second-protocol upstream port of said filter and said second-protocol downstream port of said filter is above a threshold; and disable said leakage processing module when either or both of: said measured or estimated leakage between said first-protocol port of said filter and second-protocol downstream port of said filter is below a threshold; and said measured or estimated leakage between said second-protocol upstream port of said filter and said second-protocol downstream port of said filter is below a threshold.