Dual-duplexed, tower-top front-end for a radio transceiver system

A front-end system for a communication station wherein the front-end system handles both reception signals collected via an antenna and transmission signals generated by the communication station for transmission via the antenna, comprising:

• a cryostat;
• a receive path carrying the reception signals and disposed in the cryostat;
• a transmit path carrying the transmission signals;
• a first cable coupled to both the receive path and the transmit path that carries both the transmission signals and the reception signals to and from the antenna, respectively;
• a second cable coupled via a duplexer to both the receive path and the transmit path that carries both the reception signals and the transmission signals to and from the communication station, respectively, and
• a first coupler that couples the first cable to the receive path and includes a phase-adjusting portion such that the transmission signals are not carried by the receive path;
• and
• a second coupler that couples the second cable to the receive path and includes a phase-adjusting portion such that the transmission signals are not carried by the receive path.