Here we formulate second-order cone programs (SOCPs) for synthesizing complex weights for far-field directional (single-point mainbeam) patterns for narrowband arrays. These formulations, while constructed here with the uniform circular array (UCA) in mind, are actually quite general in that they control the arbitrary-pol sidelobe level (SLL) and co-pol SNR loss relative to ideal by minimizing ...

The communication distance and the energy of the nodes are limited in large-scale wireless sensor networks (WSNs). Collaborative beamforming is an effective way to solve such problem. However, the distribution of node location is not uniform, which leads to poor performance of the mainlobe and causes the high sidelobe level (SLL). This paper presents a novel collaborative communication method b...

Circular antenna array design is one of the most important electromagnetic optimization problems of current interest. The problem of designing a large multiple concentric planar thinned circular ring arrays of uniformly excited isotropic antennas is considered in this paper. This antenna must generate a pencil beam pattern in the vertical plane along with minimized side lobe level (SLL). In thi...

A new Fresnel Zone (FZ) Antenna to focus the microwave power in the radiation near field region is presented. FZ Antennas, in comparison with array antennas or reflector antennas, conventional focused antennas, take the advantages of design simplicity as well as lower sidelobe levels (SLL) in both axial and transverse directions. Simulation results and comparisons made between the new structure...

We report recent results in rare B decays. Our focus will be on b → dγ and b → sll transitions. We discuss their impact on the CKM phenomenology and their role within our search for new physics. In particular, we analyse the impact of a recent lattice QCD estimate of the B → K form factor at zero recoil. We also briefly discuss the presently available optimal theoretical tools for the inclusive...

Introduction: The scapholunate ligament (SLL) injury can cause wrist pain and instability. There is a wide variety of surgical techniques used for the treatment this lesion, such as dorsal capsulodeses, tenodeses with flexor or extensor tendons, bone-ligament-bone graft.
 Objective: To describe new technique SLL aiming to stabilize dissociated carpus double capsulodesis.
 Materials me...

In this paper, a class of Bow-tie unit cell on FR4 substrate is designed and investigated to be used in implementing single-layer broadband Reflectarray Antenna (RA). the analyzing step, two different parameters (length angle) grounded Cross Bow-Tie (CBT) are varied obtain phase diagrams. Various degrees freedom CBT structure very helpful designing RA. antenna design procedure, an efficient syn...

A millimeter-wave 45° linearly polarized corporate-fed slot array antenna is presented in this communication. key feature the much reduced number of metallic layers and, therefore, complexity array, as compared with other competitive designs. With profile, high cross-polarization discrimination (XPD) and low sidelobe level (SLL) are still achieved by a combination techniques. The back cavity 2 ...