Multiple-input and multiple-output amplifier using mutual...

Details Multiple-input and multiple-output amplifier using mutual... Multiple-input and multiple-output amplifier using mutual...

2011-05-10

2011-05-10

Nguyen, Khanh V (Department: 2817)

Amplifiers

Signal feedback

Plural amplifier channels

C330S147000, C330S148000

Reexamination Certificate

active

07940119

ABSTRACT:
The invention relates to an amplifier capable of producing a plurality of output signals, these output signals being controlled by a plurality of input signals. A multiple-input and multiple-output amplifier of the invention includes 4 signal input terminals, 4 signal output terminals, 4 active sub-circuits and a feedback network. Each active sub-circuit has a sub-circuit input terminals connected to one of the signal input terminals, a sub-circuit output terminal connected to one of the signal output terminals and a sub-circuit common terminal. The feedback network uses mutual induction between windings. The feedback network has terminals connected to the sub-circuit common terminal of the active sub-circuits. The feedback network presents an impedance matrix producing a negative feedback such that the transfer admittance matrix of the multiple-input and multiple-output amplifier approximates a given admittance matrix.

REFERENCES:
patent: 5093668 (1992-03-01), Sreenivas
patent: 5751250 (1998-05-01), Arntz
patent: 6690243 (2004-02-01), Henrion
patent: 7642849 (2010-01-01), Broyde et al.
patent: 2005/0275458 (2005-12-01), Mukherjee et al.
patent: 2 896 360 (2007-07-01), None
patent: WO 2007/083191 (2007-07-01), None
International Search Report for International Application No. PCT/IB2007/001344, dated Sep. 25, 2007.

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