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US 8,264,278 B2Granted
Amplifier
AssigneeFujitsu Limited
InventorsKouichi Kanda, Takuji Yamamoto
Life of this patent
Estimating the term…
Abstract
An amplifier is realized by a distributed-constant-type amplifier including an input-side transmission line and an output-side transmission line, and a plurality of unit circuits coupled between the input-side transmission line and the output-side transmission line, in which each of the plurality of unit circuits is formed by including an amplification circuit having a gain equal to or greater than one.
Claims9
An amplifier being a distributed-constant-type amplifier comprising
- an input-side transmission line and an output-side transmission line, and
- a plurality of unit circuits coupled between the input-side transmission line and the output-side transmission line, wherein
- each of the plurality of unit circuits comprises an amplification circuit having a gain equal to or greater than one,
- wherein each of the plurality of unit circuits includes an input-side amplification stage coupled to the input-side transmission line, an output-side amplification stage coupled to the output-side transmission line and first inductors provided between the input-side amplification stage and the output-side amplification stage,
- wherein the output-side amplification stage includes differential pair transistors, which is inserted between the first inductors and output terminals of the output-side amplification stage respectively, and a current source transistor coupled to the differential pair transistors, and
- wherein each of the first inductors is coupled to a gate of each of the differential pair transistors, respectively.
3 more elements
Dependencies are inferred from the claim text.