Research on power amplifiers and voltage-controlled-oscillators for wireless communication systems powered by solar cells

• Project/Area Number: 23360162
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Electron device/Electronic equipment
• Research Institution: Waseda University
• Principal Investigator: YOSHIMASU Toshihiko 早稲田大学, 理工学術院, 教授 (70367176)
• Co-Investigator(Renkei-kenkyūsha): ITOH Nobuyuki 岡山県立大学, 情報工学部, 教授 (10598519)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000); Fiscal Year 2014: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000); Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2012: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000); Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: パワーアンプIC / 発振器IC / 低消費電力 / 太陽電池 / 無線通信 / パワーアンプ / 電圧制御発振器 / 発振器 / マイクロ波・ミリ波 / 電子デバイス・集積回路

Outline of Final Research Achievements

Novel power amplifier and voltage-controlled-oscillator (VCO) ICs are designed, fabricated and fully evaluated using Si CMOS technology for realizing solar cell powered ICs. The fabricated power amplifier IC has exhibited an output power of 5.0 dBm and an efficiency of 29 % at a supply voltage of 0.5 V at an operation frequency of 2.5 GHz. The fabricated VCO IC has achieved minimum operation voltage of only 0.28 V which is the top level in state-of-the-art VCO technologies. In addition, the VCO IC exhibits an oscillation frequency range from 2.1 to 2.3 GHz at a supply voltage of 0.5 V.
Therefore, measured performance which exceeds the goal of this study has been obtained.

Research Products

• [Journal Article] A 0.3-V Power Supply 2.4-GHz-Band Class-C VCO IC With Amplitude Feedback Loop in 65-nm CMOS (2014)
  • Author(s): X. Yang, Y. Uchida, K. Xu, W. Wang, T. Yoshimasu
  • Journal Title: Springer: Analog Integraｔed Circuits and Signal Processing Volume: Vol.80 Issue: 3 Pages: 1-8
  • DOI: 10.1007/s10470-014-0351-8
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] 2.4-GHz Band Ultra-Low-Voltage LC-VCO IC in 130-nm CMOS (2014)
  • Author(s): X. Yang, K. Xu, W. Wang, Y. Uchida, T. Yoshimasu
  • Journal Title: ECTI Transactions on Electrical Engineering, Electronics and Communications Volume: Vol.12, No.1 Pages: 30-36
  • Peer Reviewed
• [Presentation] A 2.5-GHz Band Low-Voltage Class-E Power Amplifier IC for Short-Range Wireless Communications in 180-nm CMOS (2015)
  • Author(s): X. Xu, Z. Sun, K. Xu, X. Yang, T. Kurniawan, T. Yoshimasu
  • Organizer: IEEE International Symposium on Radio-Frequency Integration Technology
  • Place of Presentation: Hefei, China
  • Year and Date: 2015-08-27 – 2015-08-30
• [Presentation] 2.4-GHz Band Ultra-Low-Voltage LC-VCO IC in 180-nm CMOS (2015)
  • Author(s): Xiao Xu, Xin Yang, Toshihiko Yoshimasu
  • Organizer: IEEE Electron Devices and Solid State Circuits
  • Place of Presentation: Singapore
  • Year and Date: 2015-06-01 – 2015-06-04
• [Presentation] A 2.5-GHz Band, 0.75-V High Efficiency CMOS Power Amplifier IC With Third Harmonic Termination Technique in 0.18-um CMOS (2015)
  • Author(s): Taufiq A. Kurniawan, Xin Yang, Xiao Xu, Nobuyuki Itoh, Toshihiko Yoshimasu
  • Organizer: IEEE Wireless and Microwave Technology Conference
  • Place of Presentation: Florida, USA
  • Year and Date: 2015-04-13 – 2015-04-15
• [Presentation] A 2.5-GHz Band Low-Voltage High Efficiency Class-E Power Amplifier IC With Body Effect (2014)
  • Author(s): T. Kurniawan, X. Yang, X. Xu, Z. Sun, T. Yoshimasu
  • Organizer: International Symposium on Integrated Circuits
  • Place of Presentation: Singapore
  • Year and Date: 2014-12-10 – 2014-12-12
• [Presentation] A 2.5-GHz 1-V High Efficiency CMOS Class-E Amplifier IC Using Back-gate Voltage Injection (2014)
  • Author(s): T. Kurniawan, X. Yang, Z. Sun, X. Xu, T. Yoshimasu
  • Organizer: Asia Pacific Microwave Conference
  • Place of Presentation: Sendai, Japan
  • Year and Date: 2014-11-04 – 2014-11-07
• [Presentation] 44-GHz, 0.5-V Compact Power Detector IC in 65-nm CMOS (2014)
  • Author(s): K. Xu, X. Yang, W. Wang, T. Yoshimasu
  • Organizer: IEEE International Wirelsss Symposium
  • Place of Presentation: Xi'an, China
• [Presentation] 5-GHz Band Linear CMOS Power Amplifier IC with an Integrated Linearizer in 130-nm CMOS (2014)
  • Author(s): X. Yang, K. Xu, W. Wang, T. Yoshimasu
  • Organizer: LSI and System Workshop
  • Place of Presentation: 北九州
• [Presentation] 24-80 GHz, 0.024 mm2 Miniaturized Balun Using Defected Ground Structure for Si-based RF IC Applications (2014)
  • Author(s): H. Xiao, X. Yang, T. Yoshimasu
  • Organizer: IEEE Electron Devices and Solid-State Circuits
  • Place of Presentation: 成都、中国
• [Presentation] 2-GHz Band Ultra-Low-Voltage LC-VCO IC in 130nm CMOS Technology (2013)
  • Author(s): X. Yang, K. Xu, W. Wang, Y. Uchida, T. Yoshimasu
  • Organizer: IEEE International Conference on Electron Devices and Solid-State Circuits
  • Place of Presentation: Hong Kong, China
• [Presentation] 2.4 GHz-Band Ultra-Low-Voltage Class-C LC-VCO IC in 65 nm CMOS Technology (2013)
  • Author(s): X. Yang, Y. Uchida, K. Xu, W. Wang, T. Yoshimasu
  • Organizer: Asia Pacific Microwave Conference
  • Place of Presentation: Seoul, Korea
• [Presentation] Low-Power Ultra-Wideband Power Detector IC in 130 nm CMOS Technology (2012)
  • Author(s): Xin Yang, Yorikatsu Uchida, Qing Liu, Toshihiko Yoshimasu
  • Organizer: IEEE International Microwave Workshop Series on Millimeter-Wave Wireless Technology and Applications
  • Place of Presentation: Nanjing, China