Active solid-state devices (e.g. – transistors – solid-state diode – Heterojunction device – Bipolar transistor
Patent
1993-05-13
1994-05-31
Prenty, Mark V.
Active solid-state devices (e.g., transistors, solid-state diode
Heterojunction device
Bipolar transistor
257539, 257566, 257577, 257584, H01L 2972, H01L 29161
Patent
active
053171730
ABSTRACT:
A monolithic integrated circuit provides RF and DC coupling for a unit cell of a high power quasi-optic grid amplifier. The monolithic chip includes two heterojunction bipolar transistors (HBTs) connected in a differential pair configuration with a common emitter and integrated collector-base and emitter bias resistors. Each of the plurality of unit cells comprising the quasi-optic grid amplifier includes an emitter-coupled HBT differential pair chip at the center, an input antenna that extends horizontally in both directions from the two base leads, an output antenna that extends vertically in both directions from the two collector leads, and high inductance bias lines for the emitter and collectors. The grid amplifier, which functions as a high frequency, high gain, wide bandwidth, free-space beam amplifier, comprises a plurality of unit cells arranged in a repeating pattern of input and output dipole antennas. For high frequency applications, the plurality of unit cells may be integrated on one surface of the monolithic chip.
McFarren John C.
Prenty Mark V.
Rockwell International Corporation
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