High-frequency amplification device

Details High-frequency amplification device High-frequency amplification device

1999-04-23

2000-12-19

Pascal, Robert

Amplifiers

With semiconductor amplifying device

Including frequency-responsive means in the signal...

330306, H03F 304

Patent

active

06163221&

ABSTRACT:
A high-frequency amplification device having an active element and a matching circuit and a bias supplying circuit for the active element, wherein the active element has such a small resistance component of input impedance that gives a stability factor k of less than 1 for the active element itself at a frequency band that the high-frequency amplification device is used, and a loss of the matching circuit or bias supplying circuit or a loss of the matching circuit and bias supplying circuit is used to give a stability factor k of greater than 1 for the high-frequency amplification device.

REFERENCES:
patent: 4841253 (1989-06-01), Crabill
patent: 4864250 (1989-09-01), Bacon
patent: 5642080 (1997-06-01), Whang et al.

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