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Combining Network Functions Virtualization (NFV) with Software-Defined Networking (SDN) is an emerging solution to provide fine-grained control over scalable and elastic packet processing functions. Due to changes in network policy, traffic characteristics, or physical topology in Software-Defined NFV (SDNFV) systems, the controller needs to carry out network updates frequently, i.e., change the data...
This paper presents a novel broadband thin lens antenna applied to circularly-polarized applications. The lens is composed of four identical novel conducting surfaces sandwiching three identical dielectric layers. The novel design is able to generate transmission phases of over 300° in two orthogonal directions separately, which can be applied to design lens antennas for applications of single, dual...
A novel reflectarray with two double-layer dipole arrays is presented. With a linearly-polarized feeder, the proposed reflectarray transforms the linearly-polarized incident wave into circularly-polarized one. A 20 × 20 element reflectarray operating at 24 GHz is designed and the simulated results show that a 1-dB gain bandwidth of 8.14% and a 3-dB axial-ratio bandwidth of 6.13% can be achieved, with...
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