High stability amplifier

Details High stability amplifier High stability amplifier

1981-07-17

1983-08-30

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including temperature compensation means

330310, H03F 304

Patent

active

044019530

ABSTRACT:
An electrical RF signal amplifier for providing high temperature stability and RF isolation and comprised of an integrated circuit voltage regulator (26), a single transistor (22), and an integrated circuit operational amplifier (24) mounted on a circuit board (80) such that passive circuit elements (92) are located on side of the circuit board while the active circuit elements (22, 24, 26) are located on the other side. The active circuit elements are embedded in a common heat sink (70) so that a common temperature reference is provided for changes in ambient temperature. The single transistor (22) and operational amplifier (24) are connected together to form a feedback amplifier powered from the voltage regulator (26) with transistor (22) implementing primarily the desired signal gain while the operational amplifier (24) implements signal isolation. Further RF isolation is provided by the voltage regulator (26) which inhibits cross-talk from other like amplifiers powered from a common power supply. Input and output terminals consisting of coaxial connectors (44, 26) are located on the sides of a housing (69) in which all the circuit components and heat sink (80) are located.

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