Mixer structures with enhanced conversion gain and reduced spuri

Details Mixer structures with enhanced conversion gain and reduced spuri Mixer structures with enhanced conversion gain and reduced spuri

1997-07-31

1999-01-12

Wells, Kenneth B.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

Combining of plural signals

327119, 455333, G06G 716

Patent

active

058595597

ABSTRACT:
Mixer structures are described which include a current mirror for insertion of trickle currents to an input differential amplifier and an output interface for coupling an output differential amplifier to an output port. The current mirror trickle currents improve the mixer's conversion gain and third-order intercept point and the current mirror introduces them without introducing spurious signals. The output interface couples mixer currents to the output port while isolating the output port from power-supply spurious signals.

REFERENCES:
patent: 3838262 (1974-09-01), van de Plassche
patent: 4694204 (1987-09-01), Nishijima et al.
patent: 5532637 (1996-07-01), Khoury et al.
patent: 5548840 (1996-08-01), Heck
patent: 5630228 (1997-05-01), Mittel
Gray, Paul R., Analysis and Design of Analog Integrated Circuits, John Wiley and Sons, New York, pp. 668-679 (1977).

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