Loss-compensated distributed baseband amplifier 1C's for optical transmission systems

Shunji Kimura, Yuhki Imai, Yohtaro Umeda, Takatomo Enoki

Research output: Contribution to journalArticlepeer-review

64 Citations (Scopus)


We describe a distributed baseband amplifier using a new loss compensation technique for the drain artificial line. The new loss compensation circuit improves a high-frequency performance of the amplifier and makes the gain bandwidth product of the amplifier larger than that of conventional ones. We also use dc matching terminations and dumping resistors for the gate and drain artificial lines to obtain flat gain from frequencies as low as 0 Hz. One 1C fabricated using 0.1 μm-gatelength InAlAs/lnGaAs/lnP HEMTs has a gain of 16 dB over a O-to-50 GHz band, resulting in a gain bandwidth product of about 300 GHz. Another 1C has a gain of 10 dB over a O-to-90 GHz band. These are the highest gain bandwidth product and the widest band reported for baseband amplifier IC's applicable to optical transmission systems.

Original languageEnglish
Pages (from-to)1688-1693
Number of pages6
JournalIEEE Transactions on Microwave Theory and Techniques
Issue number10 PART 1
Publication statusPublished - 1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


Dive into the research topics of 'Loss-compensated distributed baseband amplifier 1C's for optical transmission systems'. Together they form a unique fingerprint.

Cite this