Feedback amplifier circuit

Abstract

Abstract PURPOSE:To make the band of amplifying an input signal broad by connecting a peaking inductor in series with a feedback resistor of a feedback circuit of a transistor amplifier circuit. CONSTITUTION:The peaking inductor 12 is connected in series with a feedback resistor 10 of a feedback circuit 9 connected between the output and input of the transistor amplifier circuit 1. Since the impedance is increased as the frequency of the input signal is increased, the impedance of the feedback circuit 9 is increased as the frequency of the input signal is increased. Thus, the gain approaches higher gain in response to the increased frequency of the input signal. Thus, the frequency-gain characteristic with a high cut-off frequency is represented and the band to amplify the input signal is made broad.

Inventors

• 👤 Norio Okawa
• 👤 Kazuo Hagimoto

Bibliographic Details