Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Mohammad Ghiamy"'
Publikováno v:
Journal of Ardabil University of Medical Sciences, Vol 23, Iss 3, Pp 227-237 (2023)
Background: Photogrammetric analysis of facial soft tissue plays an important role in facial plastic surgeries. In many countries, planning for facial plastic surgery is done based on the defined facial metric standards for the same society. Few rese
Externí odkaz:
https://doaj.org/article/76f712b8baab49da8014dc6ee219c5c5
Publikováno v:
Results in Engineering, Vol 17, Iss , Pp 100813- (2023)
In recent years and in the ongoing development of all-optical systems, we propose two novel hard-switching based hybrid RF-FSO system architecture in the presence of atmospheric turbulence and pointing error. In the first proposed scheme, the hybrid
Externí odkaz:
https://doaj.org/article/e63d55cb2a2b4cef98843f9795d28c0c
Autor:
Ramezan Ali Sadeghzadeh, Abbas Ali Lotfi Neyestanak, Mohammad Ghiamy, Mohammad Naser-Moghaddasi, Bal Singh Virdee
Publikováno v:
IEEE Transactions on Antennas and Propagation. 58:3990-3996
An explicit finite-difference time-domain (FDTD) method is described using a uniform elliptical cylindrical spatial grid for time-domain Maxwell's equations to accurately and efficiently model conformal elliptical cylindrical line-fed patch antennas
Publikováno v:
IET Microwaves, Antennas & Propagation. 2:28-34
Novel types of antenna arrays constructed from combination of linear and elliptical antenna arrays are presented. These types are called elliptical, concentric elliptical, elliptical cylindrical and elliptical coaxial cylindrical arrays where only th
Autor:
Mohammad Ghiamy, M. Abolfathi
Publikováno v:
2013 7th International Conference on Application of Information and Communication Technologies.
Video streaming over mobile handsets is among most effective media distribution technologies to reach out end users. In this research we investigate the multiuser shared channel for unidirectional video transmission with adaptive time-varying channel
Publikováno v:
IST
A novel printed band-notched monopole antenna for ultrawideband (UWB) applications with variable frequency band-notch characteristics is presented. This antenna consists of a rectangular radiating patch with an inverted U-shaped slot, which a pair of
Publikováno v:
2008 24th Biennial Symposium on Communications.
In this paper, various types of hexagonal and conical antenna arrays constructed based on elliptical shape are presented. These types are called HA, CHA, HCA, HCCA, ECOA, ECCOA, HCOA and HCCOA where only the array factors are considered. The effect o
A Comprehensive Performance Study of ABC's and PML's of FDTD Method in Planar Micro-Strip Structures
Publikováno v:
2007 Asia-Pacific Microwave Conference.
Reflection coefficients for several ABCs and PML's have been calculated and compared in the time and frequency domain in a planar micro-strip structure.
Publikováno v:
2001 Microwave Electronics: Measurement, Identification, Applications. Conference Proceedings. MEMIA'2001 (Cat. No.01EX474).
In this paper an efficient method for full-wave analysis of millimeter-wave HEMTs is presented. The effect of wave propagation on transistor's structure is considered using finite difference time domain (FDTD) method (full-wave analysis). The active