Mixer circuit and high frequency signal receiver using the same

Details Mixer circuit and high frequency signal receiver using the same Mixer circuit and high frequency signal receiver using the same

2006-08-01

2006-08-01

Vuong, Quochien B. (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S304000, C455S296000

Reexamination Certificate

active

07085547

ABSTRACT:
A mixer circuit can suppress image interfering signals and interfering signals related to higher harmonic component of an oscillator. Using the mixer circuit, it is possible to provide a high-frequency signal receiver which maintains good signal receiving condition. This mixer circuit comprises a plurality of mixers, oscillators, a plurality of oscillator phase shifters which serve to phase-shift the output of the oscillators and supply the output to the mixers, and a plurality of intermediate frequency phase shifters which serve to phase-shift the output of the mixers. The high-frequency signal receiver comprises at least a pre-filter and the mixer circuit.

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