A practical scheme of away partition implemented on phased array antennas' beam space and element space was proposed based on the "sub-array" theory. The multiplex of beam forming coefficients between antennas' elements was analyzed. The distributed arithmetic algorithm was adopted to realize the bea...
shear, and bending. We can also define beam as a structural element which is designed to bear diverse loads, including the challenge ofuniformly distributed loads, while effectively withstanding vertical forces, shear, and bending.
Beam is a member that is subjected to lateral loads and is mainly characterized by bending deformation. It is widely used in construction, machinery, vehicles, aerospace and other engineering fields because of its universality and foundation. Considering the requirement of lightweight design, the bea...
However, there is no single, neat theory of the irregularly partitioned array antennas in the literature. This study presents some derivations of the beamforming properties for arrays with arbitrary subarray partition to fill this gap. Derivations have led us to introduce a novel approach to ...
Reiser, "Theory and Design of Charged Particle Beams", John Willy and Sons, 1994.R.A. Jameson, "Beam-intensity limitations in linear accelerators", ... RA Jameson - 《Nuclear Science IEEE Transactions on》 被引量: 61发表: 1981年 Kinetic Theory of Charged Particle Beams Reiser, "Theory and...
This paper studies the problem of frequency-invariant beamforming with concentric circular microphone arrays (CCMAs). We develop a beamforming algorithm based on an optimal approximation of the beamformer's beampattern with the Jacobi-Anger expansion. In comparison with the existing frequency-invariant...
Theory, Simulation and Design of High-Brightness, Space-Charge-Dominated Electron and Ion Beams A method is presented for the generation, matching and transport of a high-brightness, space-charge-dominated circular electron or ion beam which maintains almost uniform density transversely. In particular...
that the phase center of a diffraction-limited horn is close to the aperture, whereas the phase center of a constant-beamwidth horn is behind the ... Withington,S.,Murphy,... - 《Antennas & Propagation IEEE Transactions on》 被引量: 56发表: 1992年 Circularly polarized elliptical beamshape ...
The contributions of this work to current literature include: (i) formulation and analysis of a multiple beamforming scheme in the realm of 3-dimension WSNs; (ii) design of a multi-CB scheme taking into account minimization of radiation in undesired directions; (iii) a statistical multi-CB ...
Design of microstrip antenna with broader bandwidth and beam Design of a novel microstrip antenna with super broadband and broader beams is presented. The structure with multiple layers and parasitic element as well ... Q Zhu,L Bao - Antennas & Propagation Society International Symposium 被引量: ...