A base station for a wireless communications system having a tower-mounted amplifier
system with a low-noise amplifier transistor and a thermoelectric cooler that reduces
the operating temperature of the low-noise amplifier transistor. The amplifier
system has additional heat-generating components, such as filters, and additional
electrical components mounted on a substrate to which the low-noise amplifier transistor
is mounted. These heat-generating components are thermally isolated from the cold
side of the thermoelectric cooler. As a result, the cooling capacity and electrical
power requirement for the thermoelectric cooler is significantly reduced because
only the low-noise amplifier transistor is cooled.