This PDF covers the following topics related
to RF filter : Introduction Welcome to RF communications, The solutions,
practices and trends: Cell site development, Getting the signal across: Base
station antennas, Working within the limits: Co-siting solutions, Talking and
listening at the same time: Transmission and receiving isolation systems,
Getting from the air to the network: Cables and connectivity, Clearing the
connections: Overcoming passive intermodulation (PIM), Getting the most from
every cycle: Spectrum management, The infrastructure behind the call: Backhaul,
The next RF architecture evolution: C-RAN, The energy of communications:
Powering wireless networks, Successfully planning against failure: Reliability
in wireless systems, Extending the network indoors: DAS, C-RAN antenna systems,
and small cell solutions, Finding safer ground: Lightning protection.