Method of achieving high selectivity in receiver rf front-ends

Details Method of achieving high selectivity in receiver rf front-ends Method of achieving high selectivity in receiver rf front-ends

H - Electricity

03

F

H03F 3/45 (2006.01) H03F 3/191 (2006.01)

Patent

CA 2728901

According to some embodiments, an apparatus may comprise an amplifier, wherein the amplifier comprises: an output stage formed of a positive output terminal providing a positive output voltage and a negative output terminal providing a negative output voltage; a load tank coupled in parallel with the output stage and configured to filter signals received at the amplifier; and a negative resistance block coupled in parallel with the output stage and the load tank.

L'invention porte, selon certains modes de réalisation, sur un appareil qui peut comprendre un amplificateur, l'amplificateur comprenant : un étage de sortie formé d'une borne de sortie positive délivrant une tension de sortie positive et d'une borne de sortie négative délivrant une tension de sortie négative; un circuit oscillant de charge couplé en parallèle à l'étage de sortie et configuré pour filtrer des signaux reçus au niveau de l'amplificateur; et un bloc de résistance négative couplé en parallèle à l'étage de sortie et au circuit oscillant de charge.

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