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A Design of a Strongly Stable Generalized Minimum Variance Control Using a Genetic Algorithm
Akira YANOU,Mingcong DENG,Akira INOUE 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper proposes a design scheme of generalized minimum variance control (GMVC) having a new design parameter. The design parameter is introduced by applying coprime factorization approach and Youla-Kucera parameterization of stabilizing compensators to a generalized minimum variance controller. And it is selected by using a genetic algorithm so that the controller is designed to be stable. Therefore the proposed method gives a strongly stable system, that is, not only the closed-loop system is stable, but also the controller itself is stable.
A Digital Circuitry for Smart RFID Tags with Easy Synchronization and Anti-Collision Communication
Akira Nakajima,Takahiro Inoue,Akio Tsuneda 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
A novel digital circuitry for smart RFID tags is proposed in this paper. This digital circuitry is designed for an active tag with vital signal sensing functions. In this smart RFID tag system, a CALL signal consists of an ID code, a request code of a vital signal, and a request code of measurement time. And the tag responds to a reader only when a called ID code coincides with its own ID code. In this way, an anti-collision function is realized in this system. The operations of the proposed digital circuitry satisfying the above-mentioned requirements were confirmed by experiments using a test chip fabricated by a TSMC 0.25 ㎛ mixed signal CMOS technology. The supply voltage of the proposed circuit is 3V and the power consumption was about 0.1㎽.
A Novel Low-Voltage CMOS Voltage Reference Circuit Insensitive to VDD and Temperature Variations
Akira Nakajima,Takahiro Inoue,Akio Tsuneda,Kazuki Iwata 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7
A novel low-voltage CMOS voltage reference circuit insensitive to VDD and temperature variations is proposed in this paper. A reference voltage with low temperature dependency is achieved by canceling the negative temperature dependency of MOSFET’s threshold voltage by the PTAT voltage. The output reference voltage of 510㎷ is realized and its temperature dependency is 39ppm/℃ in the temperature range from -20℃ to 80℃. The proposed circuit can work at the voltage supply of 0.9V.
Design Method for Active-shunt-feedback Type Inductorless Low-noise Amplifiers in 65-nm CMOS
Toshiyuki Inoue,Akira Tsuchiya,Keiji Kishine 대한전자공학회 2020 Journal of semiconductor technology and science Vol.20 No.2
We demonstrated low-power and compact active-shunt-feedback type inductorless low-noise amplifiers (LNAs) in 65-nm CMOS. We pointed out the importance of considering an intermediate-node voltage in the LNA, and proposed a design method focusing on the intermediate voltage. The influence of the intermediate voltage upon the gain and noise figure was examined by a circuit simulator, and it was clarified that the intermediate voltage of VDD/2 was appropriate for high gain and low noise figure. Based on the proposed method, the active-shunt-feedback type LNA was fabricated in a 65-nm CMOS chip. The figure-of-merit considering the power, gain, bandwidth, noise factor, and linearity improved by 6 in comparison with that of the conventional 0.13-mm CMOS type.