System and method of eliminating or minimizing Lo-Related...

Details System and method of eliminating or minimizing Lo-Related... System and method of eliminating or minimizing Lo-Related...

2011-03-08

2011-03-08

Vuong, Quochien B (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Distortion, noise, or other interference prevention,...

C455S067130, C455S296000, C455S315000, C348S725000, C348S731000

Reexamination Certificate

active

07904024

ABSTRACT:
Systems and methods of eliminating or reducing interference resulting from harmonics of local oscillator frequencies of mixers are shown. In one embodiment, a determination is made as to a zone or zones within an intermediate frequency band associated with undesired spurs. Inter-tuner spurs and intra-tuner spurs may be identified such that frequency information of the identified spurs may be utilized to define a plurality of exclusion zones. Local oscillator frequencies may subsequently be efficiently selected in view of the exclusion zone information. Embodiments may also determine a score for identified spurs which may be used to optimally select from within a set of spur-generating local oscillator frequencies.

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