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

  • US 6,959,206 B2
  • Filed: 03/16/2001
  • Issued: 10/25/2005
  • Est. Priority Date: 03/16/2001
  • Status: Expired due to Term
First Claim
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1. 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 coupler that couples the receive path and the transmit path to the antenna and includes a phase-adjusting portion such that the transmission signals are not carried by the receive path;

    a cable for carrying the reception signals and the transmission signals to and from the communication station, respectively; and

    a second coupler that couples the receive path and the transmit path to the cable and includes a phase-adjusting portion such that the transmission signals are not carried by the receive path.

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