The need of duplexer in low power operation

Sylvain Munaut 246tnt at gmail.com
Thu Oct 11 05:58:25 UTC 2012


Hi,

> IIRC, both nanoBTS and SysmoBTS have separate antennas for Rx andTx and do
> not use duplexers. Do we need duplexer for UmTRXv2 if it operates in the low
> power mode, without an additional PA/LNA?

Note that both still have internal filters.

Antenna design also plays a role. The nanoBTS uses patch antenna
separated by a lump of metal to minimize direct radiation from TX to
RX.

Cheers,

    Sylvain




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