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Subscriber unit in a wireless personal communication system

  • US 5,781,538 A
  • Filed: 06/07/1995
  • Issued: 07/14/1998
  • Est. Priority Date: 11/23/1994
  • Status: Expired due to Term
First Claim
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1. A subscriber unit for receiving and transmitting digital information in a wireless communication system, said subscriber unit comprising:

  • a plurality of antennas;

    an RF receive section including a diversity selection unit for receiving input signals from each of the antennas;

    an RF transmit section for generating an output signal to be transmitted over at least one of the antennas;

    means for modemlessly coupling digital signals between a first external processing device, the RF receive section, and the RF transmit section such that the subscriber unit is adapted to communicate data between the first external processing device and a second external processing device;

    a circuit for downconverting radio frequency signals, the circuit including (a) a first mixer connected to a first local oscillator for producing an adjustable first local oscillator frequency;

    (b) a second mixer connected to a second local oscillator centered at a predetermined second local oscillator frequency; and

    (c) a third mixer connected to a third local oscillator centered at a predetermined third local oscillator frequency; and

    a databus interconnecting said RF receive section, said RF transmit section, and said modemless coupling means.

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