11 Oct
2012
11 Oct
'12
7:58 a.m.
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