نتایج جستجو برای: hfss
تعداد نتایج: 781 فیلتر نتایج به سال:
⎯ This paper is dedicated to simulate a rectangular patch antenna by using the software HFSS. Microstrip or patch antennas are becoming increasingly useful because they can be printed directly onto a circuit board. Microstrip antennas are becoming very widespread within the mobile phone market. Patch antennas are low cost, have a low profile and are easily fabricated.
The paper presents an analysis of multi-wavelength data a nearby star-forming site IC 5146 dark Streamer (d $\sim$600 pc), which has been treated as single and long filament, fl. Two hub-filament systems (HFSs) are known toward the eastern western ends Earlier published results favor simultaneous evidence HFSs end-dominated collapse (EDC) in Herschel column density map (resolution $\sim$13$''$....
OBJECTIVES To develop a brief screen to identify families at risk for food insecurity (FI) and to evaluate the sensitivity, specificity, and convergent validity of the screen. PATIENTS AND METHODS Caregivers of children (age: birth through 3 years) from 7 urban medical centers completed the US Department of Agriculture 18-item Household Food Security Survey (HFSS), reports of child health, ho...
در این مقاله روشی جدید، برای حذف محدودیت اساسی تقسیم کننده توان ویلکینسون ریزنوار نامتوازن با نسبت تقسیم بالا، یعنی پهنای کم خط ریزنوار مورد نیاز برای تحقق این تقسیم کننده توان معرفی می شود. در روش پیشنهادی به جای استفاده از خطوط مجزای ریزنوار در تقسیم کننده توان ویلکینسون، از خطوط تزویج شده نامتقارن ریزنوار استفاده می شود. نتایج بررسی های انجام شده در این گزارش حاکی از این حقیقت است که در تقسی...
We present the development and status of a traditional UCLA/BNL/SLAC style 1.5 cell photoinjector with an additional half cell downstream to aid in longitudinal pulse compression. The work presented includes radio frequency design via SuperFish and HFSS as well as beam dynamics simulation using PARMELA. We investigate longitudinal compression of an electron beam in this extra downstream half ce...
Abstract: A simple and efficient CAD model based on cavity model analysis is proposed to compute accurately the resonant frequency, input impedance, bandwidth and gain of radome loaded rectangular patch antenna. The computed values for wide range of radome parameters are compared with different theoretical and experimental values available in open literature. The computed values employing the p...
In this research, a theory has been developed to estimate the effective parameters of artificial material composed of dielectric bars placed in a periodic fashion in dielectric host medium (air) from equivalent circuit point of view and verified with HFSS simulation. The theory provides a relationship between effective permittivity and the filling factor of the constituent particle and explains...
In this paper, the design and analysis of a compact size coplanar waveguide (CPW)-fed antenna for ultrawideband (UWB) applications is presented. The antenna has a compact size of 20×20× 1.5 mm and provides a good impedance matching over the entire bandwidth of 3.2–14.3 GHz. The characteristics parameters, i.e. return loss, VSWR and radiation pattern, are analyzed using HFSS 11.0 software. Keywo...
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