The sophisticated RFS filtering solutions meet the two-stage filtering requirements of broadcast mobile TV services co-located at mobile base stations.

• Low-pass filtering is essential to mitigate the natural harmonic signals produced by mobile TV transmissions, which can degrade existing wireless communications networks, causing call drop-outs.
• Band-pass filtering, also known as transmission mask filtering, is essential to eliminate spurious transmitter signals that may cause blocking of cellular receivers.

Two-in-one filtering: the 6PX80E

To meet the dual filtering challenge, RFS's new 6PX80E band-pass filter with integrated low-pass filter provides mobile TV network operators with a unique two-in-one mobile TV filtering solution that has never-before-seen levels of flexibility. The one unit provides both transmission mask and low-pass filtering. Premium transmission mask filtering is provided by a sophisticated six-pole cross-coupled band-pass filter, plus insertion loss is just 0.6dB. Further flexibility comes from the unit's rack-mount capability, which allows it to be easily installed and retrofitted.

Dedicated low-pass filters

RFS's new 2kW LPF8E4 and 5kW LPFS16E4 low-pass filters attenuate all frequencies, including harmonics, above the UHF TV broadcast band. Unlike competing filters that extend only to 2.5GHz, RFS's new low-pass filters reject unwanted frequencies up to 4.5GHz. In addition, the filters are highly selective, boast unequalled stop-band rejection performance, and feature impressive insertion loss performance-typically 0.06dB.

All the filters are extremely compact and easy to install, and complement RFS's full range of broadcast RF filters and combiners for DTV and mobile TV.