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Power control of a direct sequence CDMA radio

  • US 5,107,487 A
  • Filed: 05/28/1991
  • Issued: 04/21/1992
  • Est. Priority Date: 05/28/1991
  • Status: Expired due to Term
First Claim
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1. An apparatus for controlling transmitted power of a code-division multiple access communication device, the communication device having a local oscillating signal, an intermediate frequency (IF) signal, the apparatus comprising:

  • means for generating an attenuation control signal;

    first controllable attenuation means, coupled to the local oscillating signal, for generating an attenuated local oscillating signal, the first controllable attenuation means changing attenuation in response to the attenuation control signal;

    second controllable attenuation means, coupled to the IF signal, for generating an attenuated IF signal, the second attenuation means changing attenuation in response to the attenuation control signal; and

    mixing means, coupled to the first controllable attenuation means and the second controllable attenuation means, for generating a transmit frequency signal from the attenuated local oscillating signal and the attenuated IF signal.

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