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Millimeter-wave multi-beam antenna arrays with passive beam-forming networks are attractive for future millimeter-wave base stations and mobile devices employing the multiple input multiple output (MIMO) technique owing to their advantages of simple structure, low cost and low power consumption. Several kinds of millimeter-wave multi-beam antenna arrays with one or two dimensional beams were investigated...
Mobile communication has evolved significantly from early voice systems to today's highly sophisticated integrated communication platform. 4G LTE networks are deployed in more than 100 countries to provide service in various spectrum band allocations depending on spectrum regime. Recently, significant momentum has started to build around the idea of a next generation, i.e. fifth generation (5G), wireless...
This talk will recalling the vision and requirements of 5G from eMBB and IoT perspective, and then introduce the concept of user centric network, which could offer the best user experience anytime and anywhere. To achieve this target, multi-connection, user and service aware management, and flexible topology of the network deployment are proposed for 5G. With these advanced features, the user self-defined...
It is well-known that both Performance and reliability of present-day RF integrated circuits (RFICs & MMICs) and even Nano electronic devices cannot be completely understood or accurately predicted from electromagnetic considerations alone. For example, the performance parameters, such as S-parameters, power handling capability and breakdown thresholds of high-density nano interconnects and RF...
For a leaky waveguide with periodic slots cut in the wall, the guided wavelength can be expressed as: λg = λ0/√εg. (1) Here, εg is an equivalent dielectric constant of the leaky waveguide, and is expressed by εg = εr − (λ0/λc')2, (2) where εr is the dielectric constant of the material filled in the waveguide, and it equals 1 when no dielectric is filled; λ0 is the wavelength in free space, and λ'c...
The Multiple-Input-Multiple-Output (MIMO) technique has become one of the key technologies in today's wireless communication systems, including LTE Advanced, IEEE 802.11 n/ac as well as the future fifth generation mobile communication that is still under development [1]. The benefit of MIMO lies in utilizing the multi-path signals for increasing the data throughput of a system with the help of multiple...
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