نتایج جستجو برای: موجبر مجتمع زیرلایه siw
تعداد نتایج: 5592 فیلتر نتایج به سال:
Recently, has emerged a n ew technology, substrate integrated waveguide (SIW) [1] [2], it has been applied successfully to the conception of planar compact components for the microwave and millimeter waves applications [3] [4]. Our study concerns the analysis of right bends of rectangular waveguides under SIW technology by the HFSS code, in order to simulate different chamfrain positions, throu...
Abstract This paper presents wideband split-ring antenna arrays based on substrate integrated waveguide (SIW) for Ka-band (26.5–40 GHz) applications. The array is fed by a 2.92 mm coaxial connector (K-connector) and the power equally distributed to each resonator. designed coplanar (CPW), SIW, CPW-to-SIW transition, coaxial-to-CPW two-stage SIW divider are described in detail. By using thin Rog...
BACKGROUND Benzodiazepines are extensively used in primary care, but their long-term use is associated with adverse health outcomes and dependence. AIMS To analyse the efficacy of two structured interventions in primary care to enable patients to discontinue long-term benzodiazepine use. METHOD A multicentre three-arm cluster randomised controlled trial was conducted, with randomisation at ...
BACKGROUND Primary care interventions that promote cessation of benzodiazepine (BZD) use in long-term users are effective at 1 year, but their efficacy at 3 years is uncertain. AIM To assess the 3-year efficacy of two primary care interventions delivered by GPs on cessation of BZD use in long-term users. DESIGN AND SETTING Multicentre, three-arm, cluster randomised, controlled trial, with r...
Microstrip lines (MSL) are widely used in microwave systems because of its low cost, light weight, and easy integration with other components. Substrate integrated waveguides (SIW), which inherit the advantages from traditional rectangular waveguides without their bulky configuration, aroused recently in low loss and high power planar applications. This chapter proposed the design and modeling ...
Corresponding Author: Abdelkhalek Nasri Department of Physics, Electronics Laboratory, Faculty of Science, Tunis El Manar 2092, Tunisia Email: [email protected] Abstract: This paper focuses on the analysis of passive devices using a recent emerging technology named Substrate Integrated Waveguide (SIW). This technology has been used in the conception of planar compact components for the ...
In this work, a novel electrically reconfigurable phase shifter based on half-mode substrate integrated waveguide (HM-SIW) is proposed. SIW guided transmission line topology, and by using excitation, smaller size can be achieved. Phase shifters are electronic devices that change the of for wide range applications, including inverse scattering sensing. The tunability PIN diodes applied here to a...
نیاز به سامانه های مخابراتی مطمئن و پرسرعت, مدارهای مخابراتی را به سمت نوری شدن هدایت نموده است. به همین دلیل امروزه سعی بر آن است که برای تک تک عنصرهای مدار الکترونیکی, جایگزین نوری طراحی و ساخته شود تا طی یک دوره گذار به مخابرت کاملا نوری برسیم. یکی از عنصرهای مورد نیاز, موجبر نوری است که در ساخت مدارهای مجتمع کاربرد زیادی دارد. آنچه در این پایان نامه آمده تحلیل یک نوع موجبر نوری است که عملک...
در این مقاله، یک حسگر مبتنی بر نانو تشدیدگر کریستال فوتونی با استفاده از صفحه کریستال فوتونی دو بعدی طراحی و برای کاربرد حسگر زیستی، مدل-سازی شده است. این حسگر شامل دو موجبر و یک نانو تشدیدگر است. به منظور افزایش محدودیت نوری و تزویج نوری بهتر بین موجبرها و تشدیدگر، دو موجبر با انتهایی بسته به عنوان موجبر ورودی و خروجی قرار داده شده است. همچنین اندازه سه حفره‌ی در ساختار تغییر داده شده است. با ...
This paper presents an active resonant conductance method (ARCM) for the design of large traveling-wave-fed SIW linear slot arrays. Two key slot parameters, slot offsets and lengths, are derived from excitation coefficients with intermediary active resonant conductance. In this method, both dominant mode mutual coupling which includes external & internal and higher order modes mutual coupling a...
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