The low noise amplifier inserted int eh reception channel of a double duplexer, designed and developed by SELECOM for the UMTS and for the GSM 1800 network, is an integrated version resulting in a product whose dimensions and weight are the smallest on the market. The performance of our product are compliant with International Operators specifications. Particular attention has been used to optimise the delta TGD in the transmission channel and to the noise figure. Due to its size and ergonomic (clamping kit part fo the protection box), the product is easy to install right beside the Transmission-Reception antenna, with no worries concerning its tightness, or IP reliability. Like all low noise amplification systems developed by SELECOM, it is associated with a bias tee through the coaxial cable and a power supply (PDU) acting as "system controller".