Re: The need of duplexer in low power operation

On Thu, Oct 11, 2012 at 3:01 PM, Sylvain Munaut 246tnt@gmail.com wrote:

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You mean bandpass filters? Are they only on Rx side or both Tx and Rx?

Yes, bandpass filters. (SAW or Ceramic, possibly both)

nanoBTS has both side. You can clearly see them here : http://openbsc.osmocom.org/trac/wiki/nanoBTS/Internals sysmoBTS I know has RX filters, I don't remember about TX.

Hum, I don't see how is that different from a duplexer if they have both Rx and Tx filters. Do you know any particular reason for this design?