Low order spur cancellation mixer topologies

Pulse or digital communications – Transmitters – Angle modulation

Reexamination Certificate

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C375S239000, C375S279000, C375S329000

Reexamination Certificate

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07042960

ABSTRACT:
Various mixer topologies, configured to cancel various low order spurs. The mixer topologies each include a pair of mixers and a plurality of couplers. The couplers are configured to cancel specific spurs. As such, the mixer topology eliminates the need for band splitting thus allowing larger input frequency ranges and allows for simpler and less expensive filtering.

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