Harris Corporation

Brian C Wenink

Timothy James Giles

Method and system for direct conversion receiver (), transmitter (), or transceiver () device. The device includes a single frequency synthesizer () generating a frequency synthesizer output signal. At least one frequency divider () is provided for generating a reduced frequency signal by selectively dividing the single frequency synthesizer output signal by an integer divisor value. Significantly, the device is configured to vary the reduced frequency signal so as to include every frequency the direct conversion communication device is designed to receive within a plurality of frequency bands by adjusting a frequency of the single synthesizer output signal and the divisor value.

Unified frequency synthesizer for direct conversion receiver or transmitter

A communications system includes a radio frequency (RF) element () for transforming an input RF signal into at least one of a first conditioned RF input signal associated with a first frequency range and a second conditioned RF input signal associated with a second frequency range higher than the first frequency range. The system also includes a local oscillator (LO) circuit () for generating at least a first LO signal, the LO circuit having an operating frequency range spanning at least a portion of a first inclusive frequency range defined by a lowest frequency of the first frequency range and a highest frequency of the second frequency range. The system further includes a mixer () for generating a first intermediate frequency (IF) signal based on one of the first and the second RF input signals and the first LO signal, and an IF element () for conditioning the first IF signal.

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Rochester, NY, United States of America

Brian C Wenink