Prof. Kaixue MA of Tianjin University, Tianjin, China

Microwave and mm-wave circuits and systems are widely used in modern communications such as 5G, satellites, radars used in space, ground, and automobile, and sensors for positioning and measurement. It is the most significant trend to make these circuits and systems low cost, small size, lightweight, and high performance. The properties of the transmission line, such as losses, size, etc., play vital roles in the platform for these circuits and systems. Guided wave transmission lines such as waveguides and suspended waveguides have the features of low loss, weak dispersion, high power capacity, etc. However, metal housing is necessary to form air cavities, which provides mechanical support and shielding while leading to large size, heavy weight, precise mechanic fabrication, and assembling lead to additional manufacturing cost. In this talk, substrate integrated technology like substrate integrated waveguide (SIW) and substrate integrated suspended line (SISL) technology will be introduced. The talk will mainly focus on our proposed SISL, which forms an excellent integration design platform for devices, passive and active circuits into an RF front-end sub-system or system. The proposed SISL technology with advantages of self-packaging, lightweight, low loss, etc. has been used to design a series of novel passive, and active circuits as well as systems like a filter, coupler, balun, VCO, mixer, low noise amplifier (LNA), power amplifier (PA), butler matrix, antenna array, and six-port receiver, etc. The proposed SISL almost keeps all the merits of the waveguide circuits while overcoming its drawbacks. Numerous excellent results of these innovative designs have demonstrated the advantages of low loss, low cost, high integration density, and self-packaging of the SISL technology, which can be expected to become one excellent design and 3D integration technology for the next generation of microwave and mm-wave circuits and system.

Biography:

Kaixue Ma is the Professor and Dean of the School of Microelectronics at Tianjin University. He received a Ph.D. degree from Nanyang Technological University (NTU), Singapore. He worked in the industry for 10 years including at the Chinese Academy of Space Technology and ST Electronics etc. He was with NTU and the University of Electronic Science and Technology of China (UESTC), Chengdu, China for many years. Dr. Ma proposed a variety of new microwave integrated circuits based on advanced CMOS, SiGe BiCMOS, GaAs, and SOI technologies, and a new circuit and system design technology of SISL. He is currently working on GaAs and silicon-based millimeter-wave and sub-millimeter-wave integrated circuits. He authored/co-authored two books, 40 patents, 150 SCI international Journal papers (120 IEEE journal articles), and 180 international conference papers in the fields of RF, microwave, millimeter-wave, and THz integrated circuits and systems.

Dr. Ma is a Fellow of the Chinese Institute of Electronics and an awardee of the Chinese National Science Fund for Distinguished Young Scholars. He received 10 technique awards including the best paper award etc. He was Associate Editor for the IEEE Transactions on Microwave Theory and Techniques and Guest Editor of IEEE Microwave Magazine and current Member and Speakers Bureau of MTT-4 and IEEE MTT-S R10 Coordinator for China and Singapore.

Address:Tianjin University, , Tianjin, China