Andrew Wireless Systems Gmbh

Outdoor Wireless Networks LLC

Roman Hofman

Peter Schmid

Libor Strachon

Martin Kufa

Thomas Kummetz

Alfons Dussmann

Karl-Heinz Fackler

Frantisek Ondracek

Jiri Kasik

Frantisek Ondrácek

A modular filter system includes a wideband combiner, which includes an antenna connector and wideband filter connectors, and multiple filter modules. A first filter module includes a first connector configured to pass a first frequency band. The first filter module includes a combiner connector configured to pass the first frequency band, which is coupled to the combiner connector. The second filter module includes second, third, fourth, and fifth connectors configured to pass second, third, fourth, and fifth frequency bands, respectively. The second filter module further includes a combiner connector configured to pass the second, third, fourth, and fifth frequency bands, which are coupled to the combiner connector.

Wideband modular filter/duplexer system

A modular filter system includes a front panel, a back panel, and a multiband combiner coupled to the front panel, the combiner including an antenna connector and filter connectors. The modular filter system further includes filter modules separate from the combiner, each filter module including first and second connectors to pass respective frequency bands, and a combiner connector to pass the frequency bands. Each filter module is configured to duplex, combine, or split first signals in the first frequency band and second signals in the second frequency band. The combiner connector of each filter module is coupled to a respective filter connector using a respective cable. The modular filter system further includes a fixing system comprising bars and plates, the bars coupled to the front and back panels using fasteners, wherein the bars and plates are configured to secure the filter modules between the combiner and the back panel.

Modular filter/duplexer system

Certain features relate to a telecommunications system with a modular frequency combiner combining multiple received signals at different frequency bands without using frequency-dependent multiplexers. The frequency combiner can include adjustable tuning elements for adjusting various signal-processing parameters of the frequency combiner while the frequency combiner is in the telecommunications system. For example, adjustable tuning elements can adjust the phases of phase shifters of each RF path so that the RF paths are matched for combining the received signals and outputting them through an output port. The adjustable tuning elements can also adjust the electrical length or physical length of the transmission lines that carry the received signals. The adjustable tuning elements can be adjusted manually or automatically while the frequency combiner is deployed in the field in the telecommunications system.

Module for combining signals having different frequencies

Growing community of inventors

Prelouc, Czechia

Roman Hofman