This paper examines electromagnetic energy transmission through a narrow slot in thick conducting plate when plane wave is incident to the slot. The creates waveguide structure. From perspective of cutoff frequency, characteristics are classified into three modes. cavity resonance (TCR) mode range above depends on thickness, and peak cross-sections (TCSs) appear periodically along known as Fabr...

in this article a new and an accurate method for kinematic and dynamic analysis of a parallel robot 3prs and a hybrid robot (parallel and serial) 3prs-rrp are presented, which is based on the denavit-hartenberg transformation matrix algebra. first, basic properties of various kinds of robots are compared, and then the denavit-hartenberg parameters and their table are introduced. next, the metho...

Continuous transverse stub (CTS) arrays represent a high-performance and affordable solution for fixed-beam scanning flat antenna systems, though intrinsically linearly polarized. In these the polarization is controlled using add-on converters or combining cross-connected CTS arrays. This two-part article presents novel parallel-fed which achieves dual-linear using, instead, single array two or...

A waveguide whose sidewalls are replaced with densely arranged metallic posts has been proposed. This guide enables the easy realization of circuit patterns by the arrangement of metallic posts periodically in a parallel-plate waveguide or a grounded dielectric substrate. This type of waveguide is called the post-wall waveguide (PWW) (Hirokawa & Ando, 1998;Ando et al., 1998) or the substrate in...

In this paper, we have given the scalar modes and discussed the coupling characteristics of an eight-port waveguide coupler consisting of four parallel single-mode waveguides. The analysis is based on a rectangular waveguide model which has been known to give accurate results in the case of two waveguide directional couplers. A classification of its various scalar modes is also given.