Radio transceiver on a chip

  • US 8,626,086 B2
  • Filed: 08/09/2011
  • Issued: 01/07/2014
  • Est. Priority Date: 02/20/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. A radio transceiver for receiving and transmitting high frequency signals, the radio transceiver comprising:

  • a down-conversion section configured to down-convert a received first high frequency signal, generating a down-converted signal;

    an up-conversion section configured to up-convert an information signal, to be transmitted, to a second high frequency signal;

    a variable controlled oscillator connected to the up-conversion section and to the down-conversion section for down-converting the first high frequency signal during a receive cycle and up-converting the information signal during a transmit cycle in a time division duplex mode; and

    a channel selection filter connected to the down-conversion section and configured to perform channel-selection filtering on the down-converted signal, thereby generating a received filtered signal;

    wherein the up-conversion section, the down-conversion section, the channel-selection filter, and the variable controlled oscillator are integrated on a single IC chip; and

    the radio transceiver is configured to employ a frequency hopping scheme.

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