- Date: June 8, 2023
MERL Contact: Toshiaki Koike-Akino
Research Areas: Communications, Electronic and Photonic Devices, Machine Learning, Signal Processing
Brief - Mitsubishi Electric Corporation announced today it has developed what is believed to be the world's first gallium nitride (GaN) power amplifier that achieves a frequency range of 3,400MHz using a single power amplifier, which the company has demonstrated can be used for 4G, 5G and Beyond 5G/6G communication systems operating at different frequencies in a single base station. The amplifier is expected to enable the radio unit (transceiver) to be shared with different communication systems and lead to more power-efficient base stations.
Mitsubishi Electric Researchers, Toshiaki Koike-Akino and Koon Hoo Teo helped developed the technology and device. Technical details will be presented at the IEEE International Microwave Symposium 2023 this month.
Please see the link below for the full press release from Mitsubishi Electric.
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- Date: April 15, 2021
Research Areas: Communications, Electronic and Photonic Devices, Machine Learning
Brief - The cover article in the April issue of Microwave Journal features MERL and MELCO's invited paper entitled "A New Frontier for Power Amplifiers Enabled by Machine Learning". Our recent research applying ML for optimizing operating conditions of advanced power amplifier designs is highlighted.
Since 1958, Microwave Journal has been the leading source for information about RF and Microwave technology, design techniques, news, events and educational information. Microwave Journal reaches 50,000 qualified readers monthly with a print magazine that has a global reach.
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- Date: January 10, 2019
Where: Tokyo, Japan
MERL Contact: Philip V. Orlik
Research Areas: Communications, Electronic and Photonic Devices, Machine Learning, Signal Processing
Brief - Mitsubishi Electric Corporation announced today its development of the world's first ultra-wideband digitally controlled gallium nitride (GaN) amplifier, which is compatible with a world-leading range of sub-6GHz bands focused on fifth-generation (5G) mobile communication systems. With a power efficiency rating of above 40%, the amplifier is expected to contribute to large-capacity communication and reduce the power consumption of mobile base stations.
MERL and Mitsubishi Electric researchers collaborated to develop digital control methods for amplifiers achieving high-efficiency of 40% and above, with 110% of the fractional bandwidth over frequency range 1.4-4.8 GHz. The digital control signals are designed using a learning-function based on Maisart®.
Please see the link below for the full Mitsubishi Electric press release text.
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- Date: February 14, 2018
Where: Tokyo, Japan
MERL Contact: Philip V. Orlik
Research Areas: Communications, Electronic and Photonic Devices, Signal Processing
Brief - MERL machine learning power amplifier and all-digital transmitter technologies that enable future intelligent wireless communications were reported at a recent press release event in Tokyo. Please see the link below for the full Mitsubishi Electric press release text.
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- Date: June 5, 2017
Where: Honolulu, HI
MERL Contact: Philip V. Orlik
Research Areas: Communications, Electronic and Photonic Devices, Signal Processing
Brief - MERL researcher Dr. Rui Ma, is organizing a Workshop in collaboration with Dr. SungWon Chung of the University of Southern California (USC) on advanced digital transmitters. This workshop overviews recent advances in digital-intensive wireless transmitter R&D for both base-stations and mobile devices. The focus will be on the digital signal processing techniques and related digital-intensive transmitter circuits and architectures for advanced modulation, linearization, spur cancellation, high efficiency encoding, and parallel processing. This workshop takes place on Monday, June 5th 2017 at International Microwave Week, in Honolulu, HI. In total, 8 technical presentations from world leading research groups will be given.
Dr. Ma will present a talk titled, "Advanced Power Encoding and Non-Contiguous Multi-Band Digital Transmitter Architectures".
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- Date: June 4, 2015
Research Areas: Applied Physics, Electronic and Photonic Devices
Brief - Li Zhu, Koon Hoo Teo and Qun Gao's paper, 'Dynamic On-resistance and Tunneling Based De-trapping in GaN HEMT,' was awarded the "Best Student Poster Award" at the IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC) 2015.
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- Date: May 13, 2015 - May 15, 2015
MERL Contacts: Bingnan Wang; William S. Yerazunis
Research Areas: Applied Physics, Electric Systems
Brief - Description: Bingnan Wang presented a paper, 'Circularly Polarized Near Field for Resonant Wireless Power Transfer' at the recently held IEEE Wireless Power Transfer Conference in Boulder, Colorado from May 13-15, 2015.
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- Date: May 26, 2013
Where: International Symposium on Power Semiconductor Devices and ICs (ISPSD)
Research Areas: Applied Physics, Electronic and Photonic Devices
Brief - The paper "Design of Enhancement Mode Single-gate and Double-gate Multi-channel GaN HEMT with Vertical Polarity Inversion Heterostructure" by Feng, P., Teo, K.H., Oishi, T., Yamanaka, K. and Ma, R. was presented at the International Symposium on Power Semiconductor Devices and ICs (ISPSD).
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- Date: May 15, 2013
Where: Proceedings of IEEE
MERL Contacts: Bingnan Wang; William S. Yerazunis Brief - The article "Wireless Power Transfer: Metamaterials and Array of Coupled Resonators" by Wang, B., Yerazunis, W. and Teo, K.H. was published in Proceedings of IEEE.
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- Date: May 15, 2013
Where: IEEE Wireless Power Transfer Conference (WPTC)
MERL Contacts: Bingnan Wang; William S. Yerazunis
Research Areas: Applied Physics, Electric Systems
Brief - The paper "Wireless Power Transfer with Artificial Magnetic Conductors" by Wu, J., Wang, B., Yerazunis, W.S. and Teo, K.H. was presented at the IEEE Wireless Power Transfer Conference (WPTC).
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- Date: March 17, 2013
Where: IEEE Applied Power Electronics Conference and Exposition (APEC)
Research Areas: Applied Physics, Electronic and Photonic Devices, Electric Systems
Brief - The paper "Generalized DC-link Voltage Balancing Control Method for Multilevel Inverters" by Deng, Y., Teo, K.H. and Harley, R.G. was presented at the IEEE Applied Power Electronics Conference and Exposition (APEC).
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- Date: March 14, 2013
Where: Proceedings of the IEEE
MERL Contacts: Bingnan Wang; William S. Yerazunis
Research Areas: Applied Physics, Electric Systems
Brief - The article "Wireless Power Transfer: Metamaterials and Array of Coupled Resonators" by Wang, B., Yerazunis, W. and Teo, K.H. was published in Proceedings of the IEEE.
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- Date: October 31, 2012
Where: European Radar Conference (EuRAD)
MERL Contact: Bingnan Wang
Research Areas: Applied Physics, Electric Systems
Brief - The paper "Accurate Models for Spiral Resonators" by Ellstein, D., Wang, B. and Teo, K.H. was presented at the European Radar Conference (EuRAD).
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- Date: October 29, 2012
Where: IEEE International Symposium on Antennas and Propagation (ISAP)
MERL Contacts: Bingnan Wang; William S. Yerazunis
Research Area: Electric Systems
Brief - The paper "Power Delivery Optimization for a Mobile Power Transfer System based on Resonator Arrays" by Yerazunis, W., Wang, B. and Teo, K.H. was presented at the IEEE International Symposium on Antennas and Propagation (ISAP).
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- Date: March 26, 2012
Where: European Conference on Antennas and Propagation (EuCAP)
MERL Contact: Bingnan Wang
Research Areas: Applied Physics, Electric Systems
Brief - The paper "Analysis on Wireless Power Transfer to Moving Devices Based on Array of Resonators" by Wang, B., Ellstein, D. and Teo, K.H. was presented at the European Conference on Antennas and Propagation (EuCAP).
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- Date: March 22, 2012
Where: Journal of Applied Physics
MERL Contact: Jinyun Zhang
Research Areas: Applied Physics, Electronic and Photonic Devices
Brief - The article "Magnetic Superlens-enhanced Inductive Coupling for Wireless Power Transfer" by Huang, D., Urzhumov, Y., Smith, D.R., Teo, K.H. and Zhang, J. was published in Journal of Applied Physics.
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- Date: March 5, 2012
Where: IEEE International Workshop on Antenna Technology (iWAT)
MERL Contact: Bingnan Wang
Research Areas: Applied Physics, Electric Systems
Brief - The paper "Metamaterials for Wireless Power Transfer" by Wang, B. and Teo, K.H. was presented at the IEEE International Workshop on Antenna Technology (iWAT).
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- Date: December 7, 2011
Where: International Semiconductor Device Research Symposium (ISDRS)
MERL Contact: Jinyun Zhang
Research Areas: Applied Physics, Electronic and Photonic Devices
Brief - The paper "Design and Simulation of Enhancement-mode N-polar GaN Single-channel and Dual-channel MIS-HEMTs" by Feng, P., Teo, K.H., Oishi, T., Nakayama, M., Duan, C. and Zhang, J. was presented at the International Semiconductor Device Research Symposium (ISDRS).
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- Date: October 19, 2011
Where: International Low Carbon Earth Summit
Research Areas: Applied Physics, Electric Systems
Brief - The paper "Charging Technology Enabler for Electric Vehicle" by Teo, K.H. was presented at the International Low Carbon Earth Summit.
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- Date: October 14, 2011
Where: IEICE Technical Committee on Antennas and Propagation (AP)
MERL Contact: Bingnan Wang
Research Areas: Applied Physics, Electric Systems
Brief - The paper "Flexible and Mobile Near-Field Wireless Power Transfer using an Array of Resonators" by Wang, B., Teo, K.H., Yamaguchi, S., Takahashi, T. and Konishi, Y. was presented at IEICE Technical Committee on Antennas and Propagation (AP).
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- Date: June 23, 2011
Where: Applied Physics Letters
MERL Contacts: Bingnan Wang; Jinyun Zhang; William S. Yerazunis
Research Areas: Applied Physics, Electric Systems
Brief - The article "Experiments on Wireless Power Transfer with Metamaterials" by Wang, B., Teo, K.H., Nichino, T., Yerazunis, W., Barnwell, J. and Zhang, J. was published in Applied Physics Letters.
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- Date: April 11, 2011
Where: European Conference on Antennas and Propagation (EuCAP)
MERL Contacts: Bingnan Wang; William S. Yerazunis
Research Areas: Applied Physics, Electric Systems
Brief - The paper "Wireless Power Transfer with Metamaterials" by Wang, B., Teo, K.H., Nishino, T., Yerazunis, W., Barnwell, J. and Zhang, J. was presented at the European Conference on Antennas and Propagation (EuCAP).
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- Date: February 15, 2011
Where: IEEE Journal of Selected Topics in Signal Processing
Research Area: Communications
Brief - The article "Random Access Protocols for Collaborative Spectrum Sensing in Multi-Band Cognitive Radio Networks" by Chen, R.-R., Teo, K.H. and Farhang-Boroujeny, B. was published in IEEE Journal of Selected Topics in Signal Processing.
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- Date: September 19, 2010
Where: International IEEE Conference on Intelligent Transportation Systems (ITSC)
Research Area: Electric Systems
Brief - The paper "Off-Grid Portable EV Charging Network Management with Dynamic Energy Pricing" by Sahinoglu, Z., Tao, Z. and Teo, K.-H. was presented at the International IEEE Conference on Intelligent Transportation Systems (ITSC).
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- Date: September 6, 2010
Where: IEEE Vehicular Technology Conference (VTC)
Research Area: Electric Systems
Brief - The paper "Electric Vehicles Network with Nomadic Portable Charging Stations" by Li, Z., Sahinoglu, Z., Tao, Z. and Teo, K.H. was presented at the IEEE Vehicular Technology Conference (VTC).
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