Class AB differential mixer
AssigneeSTMicroelectronics S.r.l.
InventorsDidier Belot, Pascal Persechini
Life of this patent
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Abstract
A differential mixer including at least two input/output stages, each stage including two identical branches, each branch of one of the two stages including at least two bipolar transistors the bases of which define a first pair of input/output terminals of the stage and are connected to a same D.C. current source individually by a respective isolating resistor; the collectors of which define a second pair of input/output terminals of the stage which forms a pair of input/output terminals of another stage of the mixer; and the emitters of which are individually connected to a low voltage reference line by a respective degenerative impedance.
Claims10
A differential mixer including at least two input/output stages, each stage including two identical branches, wherein each branch of one of the two stages includes at least two bipolar transistors, the bases of which define a first pair of input/output terminals of the stage and are connected to a same D.C. current source individually by a respective isolating resistor;
- the collectors of which define a second pair of input/output terminals of the stage which forms a pair of input/output terminals of another stage of the mixer;
- and the emitters of which are individually connected to a low voltage reference line by a respective degenerative impedance.
Dependencies are inferred from the claim text.