A 12.1 mW 50-67-GHz CMOS UP-CONVERSION MIXER WITH 6-dB CONVERSION GAIN AND 30.7-dB LO-RF ISOLATION

[[abstract]]A 50-67-GHz double-balanced mixer for direct up-conversion using standard 90-nm CMOS technology is reported. The up-conversion mixer comprises an enhanced double-balanced Gilbert cell with current injection for power consumption reduction, and negative resistance compensation for conversion gain (CG) enhancement, a parallel and differential intermediate frequency (IF) transconductance stage for bandwidth and linearity enhancement, a Marchand balun for converting the single local oscillator (LO) input signal to differential signal, and another Marchand balun for converting the differential radio-frequency (RF) output signal to single signal. The mixer consumes 12.1 mW and achieves IF-port input return loss of -12.8 dB at 0.1 GHz, LO-port input return loss of -9.5 to -11.4 dB and RF-port input return loss of -10.7 to -12.5 dB for frequencies 57-64 GHz. At IF of 0.1 GHz, the mixer achieves CG of 3.1-6 dB and LO-RF isolation of 26.4-30.7 dB for RF of 50-67 GHz. The corresponding 3-dB bandwidth of RF is larger than 17 GHz (the measurement range of 50-67 GHz). To the authors' knowledge, the CG and power consumption are the best results ever reported for a 60-GHz CMOS/BiCMOS up-conversion mixer. In addition, the measured IIP3 is -6.4 dBm at RF of 60 GHz. (c) 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:475-483, 2014[[note]]SC

A 12.1 mW 50-67-GHz CMOS UP-CONVERSION MIXER WITH 6-dB CONVERSION GAIN AND 30.7-dB LO-RF ISOLATION

[[abstract]]A 50-67-GHz double-balanced mixer for direct up-conversion using standard 90-nm CMOS technology is reported. The up-conversion mixer comprises an enhanced double-balanced Gilbert cell with current injection for power consumption reduction, and negative resistance compensation for conversion gain (CG) enhancement, a parallel and differential intermediate frequency (IF) transconductance stage for bandwidth and linearity enhancement, a Marchand balun for converting the single local oscillator (LO) input signal to differential signal, and another Marchand balun for converting the differential radio-frequency (RF) output signal to single signal. The mixer consumes 12.1 mW and achieves IF-port input return loss of -12.8 dB at 0.1 GHz, LO-port input return loss of -9.5 to -11.4 dB and RF-port input return loss of -10.7 to -12.5 dB for frequencies 57-64 GHz. At IF of 0.1 GHz, the mixer achieves CG of 3.1-6 dB and LO-RF isolation of 26.4-30.7 dB for RF of 50-67 GHz. The corresponding 3-dB bandwidth of RF is larger than 17 GHz (the measurement range of 50-67 GHz). To the authors' knowledge, the CG and power consumption are the best results ever reported for a 60-GHz CMOS/BiCMOS up-conversion mixer. In addition, the measured IIP3 is -6.4 dBm at RF of 60 GHz. (c) 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:475-483, 2014[[note]]SC

A 12.1 mW 50-67-GHz CMOS UP-CONVERSION MIXER WITH 6-dB CONVERSION GAIN AND 30.7-dB LO-RF ISOLATION

[[abstract]]A 50-67-GHz double-balanced mixer for direct up-conversion using standard 90-nm CMOS technology is reported. The up-conversion mixer comprises an enhanced double-balanced Gilbert cell with current injection for power consumption reduction, and negative resistance compensation for conversion gain (CG) enhancement, a parallel and differential intermediate frequency (IF) transconductance stage for bandwidth and linearity enhancement, a Marchand balun for converting the single local oscillator (LO) input signal to differential signal, and another Marchand balun for converting the differential radio-frequency (RF) output signal to single signal. The mixer consumes 12.1 mW and achieves IF-port input return loss of -12.8 dB at 0.1 GHz, LO-port input return loss of -9.5 to -11.4 dB and RF-port input return loss of -10.7 to -12.5 dB for frequencies 57-64 GHz. At IF of 0.1 GHz, the mixer achieves CG of 3.1-6 dB and LO-RF isolation of 26.4-30.7 dB for RF of 50-67 GHz. The corresponding 3-dB bandwidth of RF is larger than 17 GHz (the measurement range of 50-67 GHz). To the authors' knowledge, the CG and power consumption are the best results ever reported for a 60-GHz CMOS/BiCMOS up-conversion mixer. In addition, the measured IIP3 is -6.4 dBm at RF of 60 GHz. (c) 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:475-483, 2014[[note]]SC

Innovative Concepts for the Electronic Interface of Massively Parallel MRI Phased Imaging Arrays

In Magnetic Resonance Imaging (MRI), the concept of parallel imaging shows significant enhancements in boosting the signal-to-noise ratio, reducing the imaging time, and enlarging the imaging field of view. However, this concept necessitates increased size, cost, and complexity of the MR system. This thesis introduces an innovative solution for the electronics of the MRI system that allows parallel imaging with massive number of channels while avoiding, at the same time, the associated drawback

Multiple beam antenna/switch system study

In the study of the Multiple Beam Antenna/Switch for the space to ground link (SGL) uplink and downlink services, several issues related to system engineering, antenna, transmit/receive, and switch systems were addressed and the results are provided. Bandwidth allocation at Ku band is inadequate to serve the data rate requirements for the forward and return services. Rain and depolarization effects at EHF, especially at Ka band, pose a significant threat to the link availabilities at heavy rain areas. Hardware induced effects such as the nonlinear characteristics of the power amplifier may necessitate the use of linearizers and limiters. It is also important to identify the components that are susceptible to the space radiation effects and shield or redesign them with rad-hard technologies for meeting the requirements of the space environment

Research for Pseudo Millimeter Wave Circuit Design with 0.18μm CMOS Technology Node

九州工業大学博士学位論文 学位記番号:工博甲第405号 学位授与年月日:平成27年9月25日第一章：イントロダクション | 第二章：技術的課題 | 第三章：モデリング(ディエンベディング)手法 | 第四章：受動素子の設計とそのモデリング結果 | 第五章：K u - バンドの衛星放送受信機用低雑音ブロックに関する研究 | 第六章：K a - バンド周波数変調連続波変調用レーダに適したVCO の研究 | 第七章：結論九州工業大学平成27年

Seasat. Volume 2: Flight systems

Flight systems used in the Seasat Project are described. Included are (1) launch operation; (2) satellite performance after launch; (3) sensors that collected data; and (4) the launch vehicle that placed the satellite into Earth orbit. Techniques for sensor management are explained