نتایج جستجو برای: handed transmission line rh

تعداد نتایج: 666670  

2008
Chia-Min Lin John McDonald

We extend previous work on the minimal D-term inflation model modified by Right-Handed (RH) sneutrino fields to include additional inflaton-sector SUGRA corrections and two-field inflation effects. We show that SUGRA corrections simultaneously allow ns to be within 3-year WMAP limits and the cosmic string contribution to the CMB power spectrum to be less than 5%. For gauge coupling g ≤ 1, the C...

Journal: :Journal of Computational Electronics 2022

We study the propagation of voltage in a model conventional right-handed transmission line with nonlinear symmetric capacitor. Applying quasidiscrete approximation to equation line, we derive Schrödinger and find bright dark solutions which are used as initial condition for integration lattice model. The full shows on right-hand side its robustness time. density energy at each time has node aro...

2012
Dileep K. Upadhyay Srikanta Pal

A new miniaturized dominant mode leaky-wave antenna is proposed. This antenna is a transmission line structure with radiating wavenumber increasing from negative to positive values, providing backward to forward scanning capability as frequency is increased. The antenna profile is designed based on microstrip technology using balanced composite right left handed transmission lines (CRLH TL) app...

Journal: :Journal of Cosmology and Astroparticle Physics 2021

In a bid to simultaneous explanation of dark matter (DM) and tiny but non-zero masses left-handed neutrinos, we propose minimal extension the Standard Model (SM) by vector-like fermion doublet three right handed (RH) singlet neutrinos. The DM arises as mixture neutral component one RH both assumed be odd under an additional $\mathcal{Z}_2$ symmetry. As result, emerges dominantly Majorana partic...

2011
K. Narahara Y. Yamane

We investigate experimentally the collisions of nonlinear envelope pulses in a left-handed transmission line with regularly spaced Schottky varactors. By measuring the test line, we successfully observed that when two nonlinear envelope pulses traveling in opposite directions collide, two new envelope pulses are developed. These new pulses satisfy the phase-matching condition, and their carrier...

2010
S. S. Karthikeyan R. S. Kshetrimayum

In this article, an open slot split ring resonator (OSSRR) is introduced to realize a composite right/left handed (CRLH) transmission line structure in microstrip technology. The CRLH line is synthesized by etching OSSRR in the ground plane and interdigital capacitor in the microstrip line. Simulated and measured scattering parameter of the structure is presented. The dispersion characteristic ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1381

آنتن های زیادی با سطح مقطع استوانه ای وجود دارند که در کنار یا روی آنها تعدادی عنصر تابنده با طول محدود وجود دارند. این ساختارهای تقریبا استوانه ای را می توان با روش ‏‏‎s2ds(spectrum of two dimensional solutions)‎‏ تحلیل نمود. به این ترتیب که با استفاده از تبدیل فوریه نسبت به محور استوانه (محور ‏‎z‎‏ )، مسئله الکترومغناطیس سه بعدی اینگونه آنتن ها را می توان بصورت عکس مسائل دو بعدی با تغییرات ها...

2008
John McDonald

The similarity of the observed mass densities of baryons and cold dark matter may be a sign they have a related origin. The baryon-to-dark matter ratio can be understood in the MSSM with right-handed (RH) neutrinos if CDM is due to a d = 4 flat direction condensate of very weakly coupled RH sneutrino LSPs and the baryon asymmetry is generated by Affleck-Dine leptogenesis along a d = 4 (HuL) 2 f...

2011
Hirohisa Kitahara Naobumi Michishita Yoshihide Yamada

A leaky wave antenna (LWA) using composite right/left-handed (CRLH) transmission line (TL) composed of ladder network has been investigated [1]. The effect of transmission line length and height on the gain and bandwidth is clarified in [1]. In order to increase the gain of the LWA, mushroom-shaped unit cell has been investigated in [2]. Chip capacitance is used for series capacitance. The band...

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