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Radio telephone system and antenna device and base station for the same

  • US 5,648,961 A
  • Filed: 11/01/1995
  • Issued: 07/15/1997
  • Est. Priority Date: 11/21/1994
  • Status: Expired due to Fees
First Claim
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1. A TDMA system radio telephone system comprising:

  • a base station having a transmit/receive operation;

    an antenna being installed at a location away from said base station, said antenna having a transmit/receive operation;

    an antenna device being provided between said base station and said antenna;

    separate transmission lines for transferring a send signal and a receive signal between said antenna device and said base station, said send and receive signal establishing a control channel and a speech channel, and said control channel having prearranged slots therein;

    said control channel being continuously monitored by the antenna device while said speech channel is being set; and

    means for synchronizing transmit/receive switching of said antenna in said antenna device with the transmit/receive operation at said base station in accordance with the receiving timing of a particular slot of the control channel.

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