نتایج جستجو برای: siw cavity

تعداد نتایج: 79367  

Journal: :Computer Science and Information Technologies 2022

This paper demonstrates a novel kind of cavity-backed self-quadplexing slot antenna for the S and C-band applications. The proposed consists 4 distinct “U”-shaped slots different lengths produces quad frequency band wireless communication systems. These are excited through separate orthogonal placed microstrip feed lines 50 Ω; generates four operating bands at 3.2 GHz, 4.1 5.8 7.2 GHz. Due to p...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده مهندسی 1394

تکنولوژی موجبر معمولی که در سیستمهای موج میلیمتری بکار می رود از لحاظ ارزان بودن در تولید انبوه مناسب نیست و همچنین نیاز به تنظیمات و اتصالات پس از تولید دارد. علاوه بر این از موجبر نمی توان برای کاهش وزن و حجم کمک گرفت. از طرفی استفاده از خطوط انتقال مسطح مانند خطوط ریزنواری یا موجبر هم صفحه بدلیل تلفات بالا و تشعشع مناسب نمی­ باشد. موجبر مجتمع شده در زیرلایه (siw) که از دو ردیف از میله های ها...

2010
Y. Zhou

This paper discusses for the first time the combined optoelectronic-electromagnetic modelling of a new technology that represents a paradigm shift in the way millimetre-wave and terahertz electronics can be implemented using the REconfigurable Terahertz INtegrated Architecture (RETINA) concept. Instead of having traditional metal-pipe rectangular waveguide structures with metal sidewalls, RETIN...

2017
Tongfei Yu Zhengpeng Wang Haibo Zhao Jungang Miao

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...

2015
Muhammad Usman Memon Sungjoon Lim

The proposed structure in this research is constructed on substrate integrated waveguide (SIW) technology and has a mechanism that produces 16 different and distinct resonant frequencies between 2.45 and 3.05 GHz by perturbing a fundamental TE10 mode. It is a unique method for producing multiple resonances in a radio frequency planar structure without any extra circuitry or passive elements is ...

2013

Abstract This paper proposes a hybrid scanning antenna architecture for applications in mmwave intelligent mobile sensing and communications. We experimentally demonstrate suitable Wband leaky-wave antenna prototypes in substrate integrated waveguide (SIW) technology. Three SIW antennas have been designed that within a 6.5% fractional bandwidth provide beam scanning over three adjacent angular...

2014
Muhammad Imran Nawaz Zhao Huiling Muhammad Kashif

Substrate integrated waveguide (SIW) is a new form of transmission line. It facilitates the realization of nonplanar (waveguide based) circuits into planar form for easy integration with other planar (microstrip) circuits and systems. This paper describes the design of an SIW to microstrip transition. The transition is broadband covering the frequency range of 8 – 12GHz. The measured in-band in...

Journal: :The Journal of Korean Institute of Electromagnetic Engineering and Science 2013

2014
Nir Lipovetzky Hector Geffner

We have recently shown that classical planning problems can be characterized in terms of a width measure that is bounded and small for most planning benchmark domains when goals are restricted to single atoms. Two simple algorithms have been devised for exploiting this structure: Iterated Width (IW) for achieving atomic goals, that runs in time exponential in the problem width by performing a s...

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