Narrow-band amplifier, more specifically television intermediate

Details Narrow-band amplifier, more specifically television intermediate Narrow-band amplifier, more specifically television intermediate

1983-04-04

1985-06-25

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including distributed parameter-type coupling

330291, 330296, 330297, 330306, 330 66, H03F 360

Patent

active

045256810

ABSTRACT:
With narrow-band amplifiers whose output line is located close to the input line, an unwanted feedback may be produced which results in self-excitation of the circuit or at least in a reduction of the bandwidth. According to the invention, a supply line is arranged between the two lines, which supply line is completed with a capacitor to provide a resonant circuit which resonates at the signal frequency of the narrow-band amplifier. As result thereof, energy is withdrawn from the feedback path, causing the feedback to be reduced.

REFERENCES:
patent: 3530411 (1970-09-01), Sear

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