Radio transceiver on a chip

  • US 6,633,550 B1
  • Filed: 02/20/1997
  • Issued: 10/14/2003
  • Est. Priority Date: 02/20/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. A radio on a single IC chip, comprising:

  • an antenna section for transmitting and receiving a plurality of high frequency signals, said radio including means for transmitting and receiving said plurality of high frequency signals in a time division duplex mode;

    a single heterodyne down-conversion section coupled to said antenna section, for down-converting directly from a first high frequency signal of said plurality of high frequency signals to a low intermediate frequency signal;

    a bandpass filter coupled to said down-conversion section;

    a discriminator coupled to said bandpass filter for detecting a received data signal from said low intermediate frequency signal;

    an up-conversion section coupled to said antenna section, for up-converting an information signal to a second high frequency signal of said plurality of high frequency signals, said up-conversion section comprising a portion of said down-conversion section;

    a shaping filter coupled to an input of said up-conversion section; and

    said down-conversion section, bandpass filter, discriminator, up-conversion section and shaping filter integrated into said single IC chip, wherein bandpass filtering operations are performed by components integrated into said single IC chip.

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