Title :
A 0-to-40-GHz direct-coupled distributed baseband amplifier IC with SCFL interface
Author :
Kimura, Shunji ; Imai, Yuhki ; Miyamoto, Yutaka
Author_Institution :
NTT LSI Labs., Kanagawa, Japan
fDate :
12/1/1996 12:00:00 AM
Abstract :
We have developed a distributed baseband amplifier IC with a distributed source-coupled FET logic (SCFL) level transformer. The amplifier and the SCFL level transformer are directly coupled by a distributed level-shift circuit. The amplifier incorporates our new loss-compensation circuit to improve high-frequency performance. The IC, which was fabricated using commercially-available GaAs MESFET´s has a gain of 5 dB and a 0-to-41-GHz bandwidth. It can also output a 40-Gbit/s pulse waveform on the SCFL logic level, so it can be directly coupled to an SCFL logic circuit. This is the highest performance among all reported GaAs MESFET baseband amplifiers with an SCFL interface
Keywords :
DC amplifiers; MESFET integrated circuits; MMIC amplifiers; compensation; distributed amplifiers; field effect MMIC; microwave amplifiers; 0 to 40 GHz; 40 Gbit/s; 5 dB; GaAs; MESFET baseband amplifiers; SCFL interface; direct-coupled distributed baseband amplifier; gain; high-frequency performance; level transformer; loss-compensation circuit; pulse waveform; Baseband; Coupling circuits; Distributed amplifiers; FET integrated circuits; Gain; Gallium arsenide; Logic circuits; MESFET integrated circuits; Performance loss; Pulse amplifiers;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
