Amplifiers – With semiconductor amplifying device – Including signal feedback means
Patent
1986-03-31
1988-03-01
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including signal feedback means
330294, 330306, 330307, 330310, 29832, 29836, H03F 134
Patent
active
047289058
ABSTRACT:
An integrable, high frequency superlinear amplifier and its fabrication method is disclosed which is related to the basic amplifier fabrication field having negative feedback and signal conversion. The three stage amplifier design involves a first and second stage which have a narrow bandwidth response and a third amplifier stage with a larger or wider bandwidth response. The bandwidth of the wide bandwidth stage is such that when the gain curve for the two narrow bandwidth stages passes through the -6dB point at a first frequency then the peak point of the wide bandwidth stage is located at a second frequency higher than the first frequency. The wide bandwidth stage utilizes a single capacitor so that the resulting curve of the three stages has an approximately flat portion below the zero gain point. The impedance of the network is adjusted to a desired value through a feedback configuration.
REFERENCES:
patent: 3373369 (1968-03-01), Cones
patent: 3473136 (1969-10-01), Akiyama et al.
patent: 4172261 (1979-10-01), Tsuzuki et al.
Mollinga, "Designing DC Amplifiers, Part 1/Amplifiers with Zero Input and Ouptut Levels", EEE, Feb. 1969, pp. 46-51.
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