Electronic circuit for amplification of a bipolar signal

Details Electronic circuit for amplification of a bipolar signal Electronic circuit for amplification of a bipolar signal

2004-10-06

2008-03-25

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including current mirror amplifier

C330S265000, C330S263000

Reexamination Certificate

active

07348850

ABSTRACT:
Consistent with an example embodiment, there is an electronic circuit for amplification of bipolar symmetric current signals. The electronic circuit has a pair of complimentary current mirrors. Depending on the polarity of the bipolar current signal one or the current mirrors is active while the other current mirror is in an off state. This way adding a biasing current to the input signal is avoided which substantially reduces noise.

REFERENCES:
patent: 4045747 (1977-08-01), Hsu
patent: 4728815 (1988-03-01), Main
patent: 5399991 (1995-03-01), Moraveji
patent: 5455533 (1995-10-01), Kollner
patent: 5614866 (1997-03-01), Dow
patent: 5654629 (1997-08-01), Theus
patent: 0 387 951 (1990-09-01), None
patent: WO 00/31604 (2000-06-01), None
patent: WO 02/19050 (2002-03-01), None

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