• Title/Summary/Keyword: feedforward LA

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Design of Optical Receiver Using Independent-Gate-Mode Double-Gate MOSFETs (Independent-Gate-Mode Double-Gate MOSFET을 이용한 Optical Receiver 설계)

  • Kim, Yu-Jin;Jeong, Na-Rae;Park, Sung-Min;Shin, Hyung-Soon
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.47 no.8
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    • pp.13-22
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    • 2010
  • Independent-Gate-Mode Double-Gate(IGM-DG) MOSFET overcomes the limitation of bulk-MOSFET's channel controllability and enables to control the front and back-gate voltages independently. Therefore, circuit designs utilizing the IGM-DG MOSFETs provide the advantage of setting 4-terminal freely, hence achieving not only the performance improvement but also the larger scale integration. This paper presents a 15Gb/s optical receiver with a 1.0V power supply voltage, which consists of a transimpedance amplifier (TIA), a feedforward limiting amplifier (LA), and an output buffer. HSPICE simulations were conducted to confirm the circuit performance, and also to verify the circuit stability issues which may occur from the variations of process and supply voltage.

Load Variation Control Characteristics of Disturbance Cancellation Observer (외란상쇄관측기의 부하 변동 제어 특성)

  • Song, Ho-Bin;Cho, Moon-Taek;Back, Dong-Hyun;Kim, Young-Chun;Kim, Ok-Hwan;Moon, Suk-Hwan;Park, Dong-Su
    • Proceedings of the KAIS Fall Conference
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    • 2011.12b
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    • pp.547-550
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    • 2011
  • 본 논문에서는 부하변동에 대해 강인한 제어기를 구현하기 위해 PI제어기에 feedforward 외란상쇄관측기를 부가하여 구현하였다. 이로 인해 외란 변동 등의 상황에서 보다 안정적인 동작을 할 수 있도록 제안하였다. 이를 입증하기 위하여 Matlab으로 시스템의 안정도에 대해 시뮬레이션을 수행하였고, 5[Hp] 유도전동기에 대해 실험을 수행하여 제안한 시스템의 유용성을 확인하여 보았다.

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