A Design of Continuous-Time Delta-Sigma Modulators Using a Fully-Differential Resonant-Tunneling Comparator(THz Devices,<Special Section>Heterostructure Microelectronics with TWHM2005)

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概要

• 論文の詳細を見る

• Ultrahigh-speed continuous-tine delta-sigma modulators (DSMs) have been designed by using a fully-differential comparator consisting of resonant-tunneling diodes (RTDs) and HEMTs. Continuous-time lowpass and bandpass filters using HEMTs have also been incorporated to obtain lowpass- and bandpass-type DSMs, respectively. Circuit simulation assuming 0.1-μcm InP-based HEMT and RTD technology has revealed a successful operation of the 2nd-order lowpass DSM at a sampling frequency of 20GHz. The clock frequency was 10GHz because of the double sampling function of the present comparator. The 2nd-order bandpass DSM has also been designed with a center frequency of 3GHz. These results clearly show high potential of the present delta-sigma modulators.

• 社団法人電子情報通信学会の論文
• 2006-07-01

著者

• EGUCHI Keisuke

  Departments of Surgery Kawasaki Municipal Hospital

• Waho Takao

  Department Of Electrical And Electronics Engineering Sophia University

• Nakagawa Shinpei

  Department Of Electrical And Electronics Engineering Sophia University

• Eguchi Keisuke

  Department Of Electrical And Electronics Engineering Sophia University

• CHIBASHI Masaru

  Department of Electrical and Electronics Engineering, Sophia University

• TANIHATA Mitsuhiro

  Department of Electrical and Electronics Engineering, Sophia University

• Chibashi Masaru

  Department Of Electrical And Electronics Engineering Sophia University

• Tanihata Mitsuhiro

  Department Of Electrical And Electronics Engineering Sophia University

• Waho Takao

  Department Of Electrical And Electronics Engineering Faculty Of Science And Technology Sophia Univer

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