Variable gain tower mounted amplifiers for low- and high-band applications
Tower mounted amplifiers are increasingly being deployed to overcome limitations of LTE. The LTE system takes advantage of the added uplink gain provided by a TMA, reducing overall interference. Tower mounted amplifiers can also increase data rates without reducing capacity.
The RFS TMAs feature DC sense and DC/AISG bypass and are ready for antennas with integrated AISG Bias-Ts. The bypass will allow operators to reduce the number of cables/jumpers on towers, lowering monthly leasing costs and minimizing connection points.
The amplifiers cover and allow for seamless transitions to new, expanded frequencies, including the unpaired AWS-3 (1695-1710) and AWS-4 (2180-2200) spectrums. The variable gain TMAs feature best-in-class PIM of 158 dBc for improved network performance. Exceptionally small and lightweight, they reduce tower loading to decrease monthly leasing costs, ease zoning and installation, and lower overall installation costs.
Among the new variable gain TMAs being introduced is a 700 MHz TMA for the upper C-Block, designed with a low noise figure that overcomes feeder losses. Dual-duplex configuration enables the use of a single feeder for both Tx and Rx. An automatic bypass feature enhances system reliability in case of DC power or LNA failure.
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