Broadband amplification apparatus for bandwidth expansion

Details Broadband amplification apparatus for bandwidth expansion Broadband amplification apparatus for bandwidth expansion

2005-07-05

2005-07-05

Mottola, Steven J. (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including plural stages cascaded

C330S098000, C330S283000, C330S311000

Reexamination Certificate

active

06914488

ABSTRACT:
A broadband amplification apparatus for extending a bandwidth includes a first and a second amplifying unit for amplifying an input signal, a buffering unit and a first inductive buffer. The buffering unit disposed between the first and the second amplifying unit buffers an output signal of the first amplifying unit to thereby maintain a bandwidth of the output signal, increases a gain and returns back a portion of the buffered signal to the first amplifying unit. The first inductive buffer, which is connected to the buffer unit, enhances input impedance as a frequency increases within a predetermined range, thereby introducing little gain changes while serving to extend a bandwidth.

REFERENCES:
patent: 4599577 (1986-07-01), Nollet
patent: 6265944 (2001-07-01), Conta et al.

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