Today, microstrip antennas have received a lot of attention due to their unique features such as low weight and volume, easy cheap construction, the ability adapt planar structures. Of course, important problem with these is small gain bandwidth. In this paper, bandwidth antenna patch in form Antipodal Vivaldi are improved by using log-periodic Three 8-element structures designed straight-line,...

The gossip mechanism could support reliable and scalable communication in large-scale settings. In large-scale peer-to-peer environment, however, each node could only have partial knowledge of the group membership. More seriously, because the node has no global knowledge about the underlying topology, gossip mechanism incurs much unnecessary network overhead on the Internet. In this paper, we p...

A new compact 30 : 1 bandwidth ratio balun and its application to balanced antennas are presented in this paper. To realize the balun-type function, two different types of wideband transition structures are adopted for unbalanced and balanced outputs of the balun. Further, a Vivaldi antenna integrated with the proposed balun is designed and fabricated to validate the feasibility of the new appr...

Automatic arrangement is the problem of transforming an input score into a full orchestration, e.g. realized with samples. A subproblem, on which arrangement depends, is to establish the dynamic levels of individual parts, their articulations, and how parts are to align. A new kind of structural analysis is described: the interpretation of music means the delineation of existing structure, so t...

Internet Coordinate Systems (ICS) provide easy and practical latency predictions in the Internet. However, peer dynamics (i.e, churn), which is an inherent property of peer-to-peer (P2P) systems, affects the accuracy of such systems. This paper addresses the problem of churn in an ICS without landmarks, like Vivaldi. We propose a framework to assess the robustness of such an ICS in the presence...

Corina Coaraci (Estados Unidos, 18/4/1859 – 23/3/1892) jornalista, filha da americana Mary Frances Lawe e do jornalista brasileiro Carlos Francisco Alberto de Vivaldi. Colaborou em periódicos, como: Illustração Brazil, South American Mail, Popular, Folha Nova, Gazetinha, The New York Herald, Cidade Rio, Correio Povo, O Paiz. Elegemos como corpus para as reflexões que constituem este artigo, os ...

This paper proposes a stable gain and compact Antipodal Vivaldi Antenna (AVA) for 38 GHz band of 5G communication. A novel AVA is designed to provide constant gain, high front back ratio (FBR), very efficiency. The performance the proposed enhanced with help dielectric lens (DL) corrugations. rectangular-shaped DL incorporated in conventional (CAVA) enhance its up 1 dBi bandwidth by 1.8 GHz. Ne...