We study multiwavelength and multiscale data to investigate the kinematics of molecular gas associated with star-forming complexes G045.49+00.04 (G45E) G045.14+00.14 (G45W) in Aquila constellation. An analysis FUGIN $^{13}$CO(1-0) line unveils presence a giant filament (GMF G45.3+0.1; length $\sim$75 pc, mass $\sim$1.1$\times$10$^{6}$ M$_{\odot}$) having coherent velocity structure at [53, 63] ...

Hub-filament systems (HFSs) are potential sites of formation star clusters and high mass stars. To understand the HFSs to provide observational constraints on current theories that attempt explainstar globally, we report a study region associated with G326.27-0.49 using infrared data dust continuum newly obtained observations molecular tracers APEX telescope. We use spectroscopic identify veloc...

The near field coupling between two large alternating-phase fed single-layer waveguide arrays arranged side-by-side is analyzed by the Finite Element Method (FEM) (HFSS). First, the overall reflection as well as the radiation pattern from the array (320 slots and 18.4λ x 14.9λ ) is analyzed, and excellent agreement with measurements is observed. Next, the isolation between two arrays is compute...

A compact standing-wave linac has been designed using S-band microwaves for medical and industrial applications. It uses a bi-periodic structure with constant impedance. It consists of a buncher section with three-cells and on-axis coupled cavities with nine-cells. The total length is 740.0 mm including the electron gun. Using SUPERFISH, HFSS and PARMELA codes, it is capable to deliver 4.5 MeV ...

A novel broadband multilayer-layer coaxial coupled patch antenna is proposed. A simple patch geometry that is based on a rectangular patch which is place above the ground at a height (h1 +h2 ) fed by oaxialc coupled is introduced in this paper. A new resonant mode is excited using this novel patch structure. The results shows that the bandwidth is 450 to 750 GHz (S11<–10dB), larger than 40%. Th...

In this paper, a tri-band E-shaped microstrip patch antenna is presented for SHF and microwave data links. The proposed antenna has symmetrical properties and has been designed by forming E-shape structure on substrate with Wave guide feed. It radiates for three bands having two bands in SHF and one in lower EHF frequency bands. It is demonstrated that the fabricated antenna offers improved val...

A disk-type input coupler for the Pohang Light Source (PLS) storage ring cavity was fabricated and tested up to 60 kW. A coaxial adapter is required for this system which should have an exit for the loop coupling tubes. Since this input coupler can extract HOMs better than the cylinder-type one out of the cavity, a specially designed HOM absorber was implemented in the design of the adapter. A ...

This paper presents a wideband modeling methodology for on-chip coplanar single and coupled transmission lines over the conductive silicon substrate. Cost effective, semi analytical models have been developed, being purely based on explicit expressions. Silicon substrate induced loss and dispersion effects are considered, as well as the skin and proximity effects, while accounting for thick met...

The increasing number of experimental microwave breast imaging systems and the need to properly model them have motivated our development of an integrated numerical characterization technique. We use Ansoft HFSS and a formalism we developed previously to numerically characterize an S-parameter- based breast imaging system and link it to an inverse scattering algorithm. We show successful recons...