Amplifiers – With semiconductor amplifying device – Including signal feedback means
Patent
1996-01-16
1998-01-20
Mottola, Steven
Amplifiers
With semiconductor amplifying device
Including signal feedback means
330300, H03F 134
Patent
active
057105235
ABSTRACT:
A low noise amplifier (LNA), formed as a monolithic microwave integrated circuit (MMIC), includes a high-electron mobility transistor (HEMT) and utilizes tunable heterojunction bipolar transistor (HBT) active feedback to improve the amplifier's gain-bandwidth and linearity performance and to provide for self-biasing of the HEMT. In addition to enhancing the self-biasing, the MMIC, in accordance with the present invention, allows the frequency bandwidth and linearity characteristics of the LNA to be adjusted after the MMIC LNA has been fabricated without significantly degrading the noise figure performance.
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Mottola Steven
TRW Inc.
Yatsko Michael S.
LandOfFree
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