Bidirectional frequency mixer, radiofrequency transceiver...

Details Bidirectional frequency mixer, radiofrequency transceiver... Bidirectional frequency mixer, radiofrequency transceiver...

2008-05-23

2011-10-11

Nguyen, Duc M (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S326000, C455S302000, C455S313000, C327S357000

Reexamination Certificate

active

08036627

ABSTRACT:
The present invention relates to a bidirectional frequency mixer, as well as a radiofrequency transceiver system including at least such a mixer. The mixer includes two ports separated in intermediate frequency FI, one for the reception, the other for the emission and a common port in frequency RF both for reception and for emission. It also includes at least fours mixing cells and three phase shifting means of signals used to remove the undesirable frequencies generated by the mixing cells. The mixer enables a rejection of the frequencies produced by a local oscillator in transmitting phase and a rejection of the image phase in receiving phase to be preformed. The invention is in particular applicable to designing microwave integrated circuits, in particular in millimetric frequency band.

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