Ultrahigh-speed bandpass delta-sigma modulators using resonant-tunneling devices

使用谐振隧道器件的超高速带通 Δ-Σ 调制器

• 批准号: 14550330
• 负责人: WAHO Takao
• 金额: $ 2.37万
• 依托单位: Sophia University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14550330/
• 关键词: resonant-tunneling; delta-sigma modulator; bandpass; HEMT; continuous-time; multi-bit; international; Germany; 論理回路; Sパラメタ; 量子現象

By using resonant-tunneling diodes (RTDs) and high-electron-mobility transistors (HEMTs), multi-GHz continuous-time multi-bit delta-sigma modulators have been designed. Fundamental circuit blocks, such as quantizers and Gm-C filters, were designed first. The present 2-bit quantizer consisted of four conventional single-ended ones to obtain a quasi-differential operation mode. The filters employed fully differential HEMT operational amplifiers. The lowpass and bandpass delta-sigma modulators were then constructed by combining these circuit blocks. Transistor-level circuit simulation was carried out by assuming InP-based RTD/HEMT technology. A lowpass modulator was successfully designed with a 9-bit resolution and a100-MHz input bandwidth BW at a clock frequency f_c of 13 GHz. Regarding a bandpass modulator, a 7-bit resolution was obtained for BW=30 MHz and f_c=4 GHz. Since the design method have been clarified including an RTD device model used in the circuit simulation, further improvement in performance is possible by optimizing circuit parameters in the future. Our study clearly demonstrated a high potential of RTD/HEMT-based multi-GHz delta-sigma modulators.

利用谐振隧道二极管（rtd）和高电子迁移率晶体管（hemt），设计了多ghz连续时间多位δ - σ调制器。首先设计了量化器和Gm-C滤波器等基本电路模块。该2位量化器由四个传统的单端量化器组成，以获得准微分操作模式。滤波器采用全差分HEMT运算放大器。然后通过组合这些电路模块构建低通和带通δ - σ调制器。采用基于inp的RTD/HEMT技术进行了晶体管级电路仿真。在时钟频率f_c为13 GHz的情况下，成功设计了一个分辨率为9位、输入带宽为100 mhz的低通调制器。对于带通调制器，在BW=30 MHz和f_c=4 GHz时获得了7位分辨率。由于设计方法已经明确，包括电路仿真中使用的RTD器件模型，因此未来可以通过优化电路参数进一步提高性能。我们的研究清楚地表明，基于RTD/ hemt的多ghz δ - σ调制器具有很高的潜力。

项目成果

Ryozo Katoh, et al.: "A Dynamic Element Matching Circuit for Multi-bit Delta-Sigma Modulators"Proc.Asia and South Pacific Design Automation Conference (ASP-DAC 2004). 569-570 (2004)

Ryozo Katoh 等人：“多位 Delta-Sigma 调制器的动态元件匹配电路”Proc.亚洲和南太平洋设计自动化会议 (ASP-DAC 2004)。

辻 裕樹, 和保孝夫: "共鳴トンネル量子化器を用いたフラッシュ型A/D変換器の設計"電子情報通信学会 2004年総合大会論文集. SC-11-4 (2004)

Hiroki Tsuji、Takao Waho：“使用谐振隧道量化器的闪存型 A/D 转换器的设计”IEICE 2004 年大会论文集 SC-11-4 (2004)。

T.Waho: "Multi-GHz Multilevel Circuits using Resonant-Tunneling Diodes"Proc. 2002 International Symposium on New Paradigm VLSI Computing. 56-59 (2002)

T.Waho：“使用谐振隧道二极管的多 GHz 多级电路”Proc。

Ryozo Katoh, et al.: "A Dynamic Element Matching Circuit for Multi-bit Delta-Sigma Modulators"Proc. Asia and South Pacific Design Automation Conference 2004 (ASP-DAC2004). 569-570 (2004)

Ryozo Katoh 等人：“多位 Delta-Sigma 调制器的动态元件匹配电路”Proc。

Takao Waho: "Resonant-Tunneling Diode and its Application to Multi-GHz Analog-to-Digital Converters (Invited)"Proc.Int.Seminar on Quantum Nanoelectronics for Meme-Media-Based Information Technologies. 53-58 (2003)

Takao Waho：“谐振隧道二极管及其在多 GHz 模数转换器中的应用（特邀）”Proc.Int.基于模因媒体信息技术的量子纳米电子学研讨会。