Output amplifier

Details Output amplifier Output amplifier

1989-03-08

1990-05-29

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330261, 330300, H03F 345

Patent

active

049299077

ABSTRACT:
An output amplifier for pulse generators comprises a first differential bipolar transistor amplifier stage for amplifying complementary voltage pulses and a second gallium arsenide field-effect (GaAs FET) transistor stage with two GaAs FET transistors wired as a common gate stage having a constant voltage bias. The GaAs FET transistor amplifier stage, responsive to the first amplifier stage, is used to generate high output voltage swings having fast transition times over a wide frequency band, whereas the bipolar transistor amplifier stage provides high gain and compensation of the GaAs anomalies.

REFERENCES:
patent: 4121169 (1978-10-01), Iwanatsu
patent: 4464636 (1984-08-01), Dobrovolny
patent: 4528520 (1985-07-01), Osawa
patent: 4528520 (1985-05-01), Jett, Jr. et al.
IEEE Transactions on Electron Devices, vol. ED-25, No. 6, Jun. 1987, pp. 563-567, T. Furutsuka et al, Improvement of the Drain Breakdown Voltage of GaAs Power MESFETS by a Simple Recess Structure.

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