Dual band radio frequency transmitter

  • US 8,095,082 B2
  • Filed: 10/10/2007
  • Issued: 01/10/2012
  • Est. Priority Date: 10/10/2007
  • Status: Active Grant
First Claim
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1. A transmitter comprising:

  • a transformer adapted to transform a differential radio frequency (RF) signal to a single-ended RF signal;

    a transformer tuning circuit adapted to tune the transformer to permit the transmitter to transmit the single-ended RF signal in one of a first frequency band and a second frequency band, different from the first frequency band;

    at least one amplifier coupled to the transformer and operable over both the first and second frequency bands; and

    at least one switch coupled to an output of the at least one amplifier and adapted to connect the single-ended RF signal to one of a first transmit path and a second transmit path, the transformer, the at least one switch, and the at least one amplifier formed on a common integrated circuit.

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