Cross band combiners

Cross-band combiners enable signals from multiple base stations of different bands to be combined onto a single pair of feeders which speeds up deployment, saves the cost of additional feeders and when used with ultrawideband antennas and multi-band TMAs, reduced site clutter.

Cross-band combiners are used to combine multiple frequency bands and are technology independent. They consist of wideband filters for each required band combined with a common junction to enable each band to be presented to a common antenna connection. Depending on the number of bands involved, the cross-band combiner can be referred to as diplexer (Two frequency bands), triplexer (three frequency bands), quad-plexers (four frequency bands), etc.

Cross-band combiners can be used in scenarios where multiple base stations are sharing the feeder cables while using separate antennas for each frequency bands or they can be used where wideband antenna is being used to support multiple bands.

Filtronic offers a wide range of cross-band combiners for different scenarios in the infrastructure sharing market. The filters are designed for various combination of 700, 800, 900, 1200, 1800, 2100 and 2600MHz frequency bands.

As an example of Filtronic cross-band combiners, PCC043 combines the LTE800 (790-862MHz) and EGSM900 (880-960MHz) bands. The filter has very low loss across both frequency bands and very high isolation. The filter is designed with Filtronic proprietary architecture to achieve significantly reduced overall size, weight and cost.