Amplifiers – With semiconductor amplifying device – Including field effect transistor
Patent
1990-07-10
1991-09-24
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including field effect transistor
330282, 330294, H03F 134
Patent
active
050517058
ABSTRACT:
A feedback circuit couples a base amplifier output to the amplifier input for feeding back a portion of an amplified input signal. The feedback circuit includes an inductor coupled in series with a variable resistance. The variable feedback resistance is provided by a feedback FET having a gate for receiving a control signal for varying the resistance between the source and drain. The gain of the base amplifier is determined over the predetermined frequency range by the combined impedance of the inductor and resistance. The base amplifier is a field-effect transistor (FET). The feedback inductance is taken from a portion of a coil coupling the drain of the base FET with an output terminal.
REFERENCES:
patent: 4612514 (1986-09-01), Shigaki et al.
Pacific Monolithics, Gallium Arsenide Systems, Data Sheet, "2-6 and 2-8 GHz MMIC Amplifiers In Drop-In Packages", 4 pages.
Pacific Monolithics Invention Disclosure Form dated 1/12/89, 13 pages.
Genin Robert D.
McGrath Finbarr J.
Moghe Sanjay B.
Ramachandran Ravi
Anderson Edward B.
Mullins James B.
Pacific Monolithics
LandOfFree
Gain-tilt amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gain-tilt amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gain-tilt amplifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1699405