Advanced amplifier system includes smart redundancy

13-05-2020 | Filtronic | Subs & Systems

Filtronic plc has launched a range of Tower Top Amplifier (TTA) systems created for use in two-way radio networks, especially for public safety systems such as P25.

The company's 'SGG' Series TTA systems function in the 700MHz and 800MHz public safety bands. The SAC Tower Amplifiers combined with the SEG Control Units give a lightweight, high-performance, integrated tower top system solution for mission-critical radio networks. A key point is smart redundancy, which continuously monitors the health of the balanced quadrature-coupled amplifiers

— in case of failure in one of the amplifiers, the system can remain operating employing the redundant amplifier. If both amplifiers are compromised, the system can perform in a fallback-mode.

“These new Filtronic TTA systems are among the few tower top amplifiers on the market that are fully compliant with the most stringent public safety RF specifications,” said Walter Magiera, chief commercial officer of Filtronic. “The amplifiers have excellent system flatness across the passband and low system noise figure, while retaining linearity and out-of-band rejection. This provides optimum inbound coverage and dependable performance in mission-critical applications.”

The compact TTA units measure approximately 9" x 6.8" x 2" (229mm x 173mm x 51mm) and weigh less than 3.6kg (8lb). The 19" 1 RU rack-mounted SEG units are offered in a multicoupler model with eight output ports, expandable to either 16 or 32 ports utilising optional expansion kits.

By Natasha Shek