| 摘要 |
For use in an orthogonal frequency division multiplexing (OFDM) transceiver, a multimode local oscillator circuit and a method of operating the same. In one embodiment, the circuit includes: ( 1 ) a single sideband mixer having an output, first and second inputs and a local oscillator input and ( 2 ) a signal generator, coupled to the single sideband mixer, for alternatively providing to the first and second inputs: ( 2 a) constant values to cause the single sideband mixer to generate a first receiver local oscillator signal for operating the OFDM transceiver as a zero intermediate frequency receiver and ( 2 b) a first orthogonal baseband signal to cause the single sideband mixer to generate a second receiver local oscillator signal for operating the OFDM transceiver as a low intermediate frequency receiver.
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