Amplifiers – With semiconductor amplifying device – Including frequency-responsive means in the signal...
Patent
1986-02-04
1987-03-24
LaRoche, Eugene R.
Amplifiers
With semiconductor amplifying device
Including frequency-responsive means in the signal...
330302, 330303, H03F 3191, H03F 3193
Patent
active
046528350
ABSTRACT:
A bandpass filter is presented which allows variation of bandwidth while passband gain remains constant. The presented bandpass filter relies on feedforward (as opposed to feedback) to compensate for losses within the bandpass filter. Two feedforward circuits are shown, one a current source and the other a voltage source in series with a resistance.
REFERENCES:
patent: 3936830 (1976-02-01), Overbury
patent: 4496859 (1985-01-01), Crooks
Hewlett--Packard Company
LaRoche Eugene R.
Mottola Steven J.
Weller Douglas L.
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