Rui Ma
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A GaN PA for 4G LTE-Advanced and 5G: Meeting the telecommunication needs of various vertical sectors including automobiles, robotics, health care, factory automation …
R Ma, KH Teo, S Shinjo, K Yamanaka, PM Asbeck
IEEE Microwave Magazine 18 (7), 77-85, 2017
Concurrent multiband digital outphasing transmitter architecture using multidimensional power coding
SW Chung, R Ma, S Shinjo, H Nakamizo, K Parsons, KH Teo
IEEE Transactions on Microwave Theory and Techniques 63 (2), 598-613, 2015
A 5-Level Discrete-Time Power Encoder with Measured Coding Efficiency of 70% for 20-MHz LTE Digital Transmitter
KP Qiuyao Zhu 1, 2, Rui Ma1, Chunjie Duan1, Koon Hoo Teo1
2014 IEEE International Microwave Symposium, 1-3, 2014
A 40 dBm High Voltage Broadband GaN Class J Power Amplifier for PoE Micro-Basestations
R. Ma, S. Goswami, K. Yamanaka, Y. Komatsuzaki, A
Microwave Symposium Digest (IMS), 2013 IEEE MTT-S International, 1 - 3, 2013
Methods and systems for terahertz-based positioning
P Wang, H Fu, P Orlik, T Koike-Akino, R Ma, B Wang
US Patent 10,795,151, 2020
Inter-Band Carrier Aggregation Digital Transmitter Architecture with Concurrent Multi-Band Delta-Sigma Modulation Using Out-of-Band Noise Cancellation
KT S. Chung, R. Ma, S. Shinjo
2015 International Microwave Symposium, 2015
3.0–3.6 GHz wideband, over 46% average efficiency GaN Doherty power amplifier with frequency dependency compensating circuits
Y Komatsuzaki, K Nakatani, S Shinjo, S Miwa, R Ma, K Yamanaka
2017 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and …, 2017
High electron mobility transistor with multiple channels
KH Teo, P Feng, R Ma
US Patent 8,907,378, 2014
A novel 1.4-4.8 GHz ultra-wideband, over 45% high efficiency digitally assisted frequency-periodic load modulated amplifier
Y Komatsuzaki, R Ma, M Benosman, Y Nagai, S Sakata, K Nakatani, ...
2019 IEEE MTT-S International Microwave Symposium (IMS), 706-709, 2019
A review of recent development on digital transmitters with integrated GaN switch-mode amplifiers
R Ma
2015 IEEE International Symposium on Radio-Frequency Integration Technology …, 2015
Volterra-series-based distortion analysis for optimization of out-of-band terminations in GaN HEMT devices
ER Srinidhi, R Ma, G Kompa
IEEE electron device letters 29 (1), 24-27, 2007
Metamaterial absorber for THz polarimetric sensing
B Wang, A Sadeqi, R Ma, P Wang, W Tsujita, K Sadamoto, Y Sawa, ...
Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and …, 2018
Broadband supercontinuum light source seeded by random distributed feedback fiber laser
R Ma, YJ Rao, WL Zhang, H Wu, X Zeng
2017 25th Optical Fiber Sensors Conference (OFS), 1-4, 2017
Machine-learning based digital Doherty power amplifier
R Ma, M Benosman, KA Manjunatha, Y Komatsuzaki, S Shinjo, KH Teo, ...
2018 IEEE International Symposium on Radio-Frequency Integration Technology …, 2018
Implementation of a current-mode class-S RF power amplifier with GaN HEMTs for LTE-Advanced
R Ma, Z Wang, X Yang, S Lanfranco
WAMICON 2012 IEEE Wireless & Microwave Technology Conference, 1-6, 2012
A fully analog two-way sequential GaN power amplifier with 40% fractional bandwidth
J Shao, R Ma, KH Teo, S Shinjo, K Yamanaka
2015 IEEE International Wireless Symposium (IWS 2015), 1-3, 2015
A High Efficiency 3.6-4.0 GHz Envelope-Tracking Power Amplifier Using GaN Soft-Switching Buck-Converter
Y Komatsuzaki, S Lanfranco, T Kolmonen, O Piirainen, JK Tanskanen, ...
2018 IEEE/MTT-S International Microwave Symposium-IMS, 465-468, 2018
A concurrent triple-band digital transmitter using feedforward noise cancellation for delta-sigma modulation
SW Chung, R Ma, S Shinjo, K Yamanaka, KH Teo
2017 47th European Microwave Conference (EuMC), 1140-1143, 2017
Outphasing multi-level RF-PWM signals for inter-band carrier aggregation in digital transmitters
SW Chung, R Ma, KH Teo, K Parsons
2015 IEEE Radio and Wireless Symposium (RWS), 212-214, 2015
A real-time architecture for agile and FPGA-based concurrent triple-band all-digital RF transmission
DC Dinis, R Ma, S Shinjo, K Yamanaka, KH Teo, PV Orlik, ASR Oliveira, ...
IEEE Transactions on Microwave Theory and Techniques 66 (11), 4955-4966, 2018
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