A Simple Linear-Type Negative Permittivity Metamaterials Substrate Microstrip Patch Antenna
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Metamaterial Design Antenna for Biomedical Application Integrated with Solar Panel
METAMATERIAL DESIGN ANTENNA FOR BIOMEDICAL APPLICATION INTEGRATED WITH SOLAR PANEL G. Jeevagan Navukarasu Lenin1*, R. Vimala2, R. Dhanasekaran3, S. Arun Prakash4 and K. Baskaran5 1Department of ECE, Anna University- University College of Engineering, Ramanathapuram, India. 2Department of EEE, PSNA College of Engineering and Technology, Dindigul, India. 3Department of EEE, Syed Ammal Engineering College, Ramanathapuram, India. 4Department of EEE, Anna University- University College of Engineering, Ramanathapuram, India. 5Department of CSE, Government College of Technology, Coimbatore, India. *Correspondence: [email protected] Abstract: Today biomedical application holds a vital role an increase in antenna bandwidth. This can be in medical diagnosis and treatment and as an academic achieved by loading the radiating element of a patch discipline. In recent days glucose monitoring, insulin with complementary split-ring resonator (CSRR), pumps, deep brain simulations and endoscopy are a few employing a metamaterial superstrate or using CSRR examples of the medical applications through body in the ground plane. The future mobile applications implantable units. Antennas are placed into human bodies or mounted over the torso (skin-fat-muscle) to form a make use of the solar panel for self-power. The biomedical application and exterior instruments can be drawback is the size limitation for antenna in mobile arranged to be used for short range biotelemetry devices. The three main design types of mobile applications. Remote monitoring allows the diagnosis of photovoltaic antenna include the use of solar cells as diseases and can be serving as the application of hospital an RF ground plane, as a radiating element and as RF at home, this installation of instruments reduces the stacked parasitic patch element suspended above the hospitalization period. -
A Broad Bandwidth Suspended Membrane Waveguide to Thinfilm
A Broad Bandwidth Suspended Membrane Waveguide to Thinfilm Microstrip Transition J. W. Kooi California Institute of Technology, 320-47, Pasadena, CA 91125, USA. C. K. Walker University of Arizona, Dept. of Astronomy. J. Hesler University of Virginia, Dept. of Electrical Engineering. Abstract Excellent progress in the development of Submillimeter-wave SIS and HEB mixers has been demonstrated in recent years. At frequencies below 800 GHz these mixers are typically implemented using waveguide techniques, while above 800 GHz quasi-optical (open structure) methods are often used. In many instances though, the use of waveguide components offers certain advantages. For example, broadband corrugated feed-horns with well defined on axis Gaussian beam patterns. Over the years a number of waveguide to microstrip transitions have been proposed. Most of which are implemented in reduced height waveguide with RF bandwidth less than 35%. Unfortunately reducing the height makes machining of mixer components at terahertz frequencies rather difficult. It also increases RF loss as the current density in the waveguide goes up, and surface finish is degraded. An additional disadvantage of existing high frequency waveguide mixers is the way the active device (SIS, HEB, Schottky diode) is mounted in the waveguide. Traditionally the junction, and its supporting substrate, is mounted in a narrow channel across the guide. This structure forms a partially filled dielectric waveguide, whose dimensions must kept small to prevent energy from leaking out the channel. At frequencies approaching or exceeding a terahertz this mounting scheme becomes impractical. Because of these issues, quasi-optical mixers are typically used at these small wavelength. In this paper, we propose the use of suspended silicon (Si) and silicon nitride (Si3N4) membranes with silicon micro-machined backshort and feedhorn blocks. -
Dielectric Permittivity Model for Polymer–Filler Composite Materials by the Example of Ni- and Graphite-Filled Composites for High-Frequency Absorbing Coatings
coatings Article Dielectric Permittivity Model for Polymer–Filler Composite Materials by the Example of Ni- and Graphite-Filled Composites for High-Frequency Absorbing Coatings Artem Prokopchuk 1,*, Ivan Zozulia 1,*, Yurii Didenko 2 , Dmytro Tatarchuk 2 , Henning Heuer 1,3 and Yuriy Poplavko 2 1 Institute of Electronic Packaging Technology, Technische Universität Dresden, 01069 Dresden, Germany; [email protected] 2 Department of Microelectronics, National Technical University of Ukraine, 03056 Kiev, Ukraine; [email protected] (Y.D.); [email protected] (D.T.); [email protected] (Y.P.) 3 Department of Systems for Testing and Analysis, Fraunhofer Institute for Ceramic Technologies and Systems IKTS, 01109 Dresden, Germany * Correspondence: [email protected] (A.P.); [email protected] (I.Z.); Tel.: +49-3514-633-6426 (A.P. & I.Z.) Abstract: The suppression of unnecessary radio-electronic noise and the protection of electronic devices from electromagnetic interference by the use of pliable highly microwave radiation absorbing composite materials based on polymers or rubbers filled with conductive and magnetic fillers have been proposed. Since the working frequency bands of electronic devices and systems are rapidly expanding up to the millimeter wave range, the capabilities of absorbing and shielding composites should be evaluated for increasing operating frequency. The point is that the absorption capacity of conductive and magnetic fillers essentially decreases as the frequency increases. Therefore, this Citation: Prokopchuk, A.; Zozulia, I.; paper is devoted to the absorbing capabilities of composites filled with high-loss dielectric fillers, in Didenko, Y.; Tatarchuk, D.; Heuer, H.; which absorption significantly increases as frequency rises, and it is possible to achieve the maximum Poplavko, Y. -
A Survey on Microstrip Patch Antenna Using Metamaterial Anisha Susan Thomas1, Prof
ISSN (Print) : 2320 – 3765 ISSN (Online): 2278 – 8875 International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering (An ISO 3297: 2007 Certified Organization) Vol. 2, Issue 12, December 2013 A Survey on Microstrip Patch Antenna using Metamaterial Anisha Susan Thomas1, Prof. A K Prakash2 PG Student [Wireless Technology], Dept of ECE, Toc H Institute of Science and Technology, Cochin, Kerala, India 1 Professor, Dept of ECE, Toc H Institute of Science and Technology, Cochin, Kerala, India 2 ABSTRACT: Microstrip patch antennas are used for mobile phone applications due to their small size, low cost, ease of production etc. The MSA has proved to be an excellent radiator for many applications because of its several advantages, but it also has some disadvantages. Lower gain and narrow bandwidth are the major drawbacks of a patch antenna. In this paper, a survey on the existing solutions for the same which are developed through several years and an evolving technology metamaterial is presented. Metamaterials are artificial materials characterized by parameters generally not found in nature, but can be engineered. They differ from other materials due to the property of having negative permeability as well as permittivity. Metamaterial structure consists of Split Ring Resonators (SRRs) to produce negative permeability and thin wire elements to generate negative permittivity. Performance parameters especially bandwidth, of patch antennas which are usually considered as narrowband antennas can be improved using metamaterial. Metamaterials are also the basis of further miniaturization of microwave antennas. Keywords: Microstrip antenna, Metamaterial, Split Ring Resonator, Miniaturization, Narrowband antennas. I. INTRODUCTION Although the field of antenna engineering has a history of over 80 years it still remains as described in [1] “…. -
Metamaterials and the Landau–Lifshitz Permeability Argument: Large Permittivity Begets High-Frequency Magnetism
Metamaterials and the Landau–Lifshitz permeability argument: Large permittivity begets high-frequency magnetism Roberto Merlin1 Department of Physics, University of Michigan, Ann Arbor, MI 48109-1040 Edited by Federico Capasso, Harvard University, Cambridge, MA, and approved December 4, 2008 (received for review August 26, 2008) Homogeneous composites, or metamaterials, made of dielectric or resonators, have led to a large body of literature devoted to metallic particles are known to show magnetic properties that con- metamaterials magnetism covering the range from microwave to tradict arguments by Landau and Lifshitz [Landau LD, Lifshitz EM optical frequencies (12–16). (1960) Electrodynamics of Continuous Media (Pergamon, Oxford, UK), Although the magnetic behavior of metamaterials undoubt- p 251], indicating that the magnetization and, thus, the permeability, edly conforms to Maxwell’s equations, the reason why artificial loses its meaning at relatively low frequencies. Here, we show that systems do better than nature is not well understood. Claims of these arguments do not apply to composites made of substances with ͌ ͌ strong magnetic activity are seemingly at odds with the fact that, Im S ϾϾ /ഞ or Re S ϳ /ഞ (S and ഞ are the complex permittivity ϾϾ ഞ other than magnetically ordered substances, magnetism in na- and the characteristic length of the particles, and is the ture is a rather weak phenomenon at ambient temperature.* vacuum wavelength). Our general analysis is supported by studies Moreover, high-frequency magnetism ostensibly contradicts of split rings, one of the most common constituents of electro- well-known arguments by Landau and Lifshitz that the magne- magnetic metamaterials, and spherical inclusions. -
Multilayered Metamaterial Low Profile Antenna for Iot Applications
J. ADV. SIMULAT. SCI. ENG. Vol. 6, No. 1, 273-281. © 2019 Japan Society for Simulation Technology MMLPA: Multilayered Metamaterial Low Profile Antenna for IoT Applications Tojoarisoa Rakotoaritina1,*, Megumi Saito1, Zhenni Pan1, Jiang Liu1, Shigeru Shimamoto1 1Department of Computer Science and Communications Engineering, Waseda University ∗[email protected] Received: November 22, 2018; Accepted: July 21, 2019; Published: August 10, 2019 Abstract. Nowadays, within the concept of Internet of Things (IoT), smart homes, smart factory, intelligent transportation among others are infrastructure systems that connect our world to the Internet. However, wireless communications technology are considerably con- strained by complicated structures, and lossy media in complex environments. Fundamental limitations on the transmission range have been treated to connect IoT devices in such Ra- dio Frequency (RF) challenging environments. In order to extend the transmission range in complex environments, Magnetic Induction (MI) communication has been proved to be an efficient solution. In this paper, a Multilayered Metamaterial low profile antenna (MMLPA) using Magnetic Induction communication scheme is proposed for IoT applications. The system model of the MMLPA is analyzed. Then an MMLPA system is designed by using a circular loop antenna backed with isotropic metamaterial which is considered as a Defected Ground Structure (DGS) as well as with anisotropic metamaterial for the purpose of a di- electric uniaxial metamaterial. By using a full-wave finite-element method, the proposed analysis is supported with simulation results where good agreement is achieved compared to the measurement results after realizing four prototypes of the MMLPA antennas. The effect of the presence of metal in the vicinity of the transceivers is also analyzed. -
Analysis of a Waveguide-Fed Metasurface Antenna
Analysis of a Waveguide-Fed Metasurface Antenna Smith, D., Yurduseven, O., Mancera, L. P., Bowen, P., & Kundtz, N. B. (2017). Analysis of a Waveguide-Fed Metasurface Antenna. Physical Review Applied, 8(5). https://doi.org/10.1103/PhysRevApplied.8.054048 Published in: Physical Review Applied Document Version: Publisher's PDF, also known as Version of record Queen's University Belfast - Research Portal: Link to publication record in Queen's University Belfast Research Portal Publisher rights © 2017 American Physical Society. This work is made available online in accordance with the publisher’s policies. Please refer to any applicable terms of use of the publisher. General rights Copyright for the publications made accessible via the Queen's University Belfast Research Portal is retained by the author(s) and / or other copyright owners and it is a condition of accessing these publications that users recognise and abide by the legal requirements associated with these rights. Take down policy The Research Portal is Queen's institutional repository that provides access to Queen's research output. Every effort has been made to ensure that content in the Research Portal does not infringe any person's rights, or applicable UK laws. If you discover content in the Research Portal that you believe breaches copyright or violates any law, please contact [email protected]. Download date:02. Oct. 2021 PHYSICAL REVIEW APPLIED 8, 054048 (2017) Analysis of a Waveguide-Fed Metasurface Antenna † † David R. Smith,* Okan Yurduseven, Laura Pulido Mancera, and Patrick Bowen Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708, USA Nathan B. -
(12) United States Patent (10) Patent No.: US 9.232,618 B2 Bourke, Jr
USOO9232618B2 (12) United States Patent (10) Patent No.: US 9.232,618 B2 Bourke, Jr. et al. (45) Date of Patent: Jan. 5, 2016 (54) UP AND DOWN CONVERSION SYSTEMS (58) Field of Classification Search FOR PRODUCTION OF EMITTED LIGHT CPC .............. H01J9/00; H01J 61/00; A61N 5700; FROM VARIOUS ENERGY SOURCES G01N33/00; G01N 2003/0003; G01N 33/53; INCLUDING RADIO FREQUENCY, G01N 33/551; G01N33/54346; G01N 33/553; MCROWAVE ENERGY AND MAGNETC G01N 23/02; G02B 26/00 USPC ....................................................... 250/458.1 INDUCTION SOURCES FOR UPCONVERSION See application file for complete search history. (56) References Cited (75) Inventors: Frederic A. Bourke, Jr., Greenwich, CT (US); Zakaryae Fathi, Raleigh, NC U.S. PATENT DOCUMENTS (US); Ian Nicholas Stanton, Durham, NC (US); Michael J. Therien, Durham, 4,608.222 A 8, 1986 Brueckner .................... 376/104 NC (US); Paul Rath Stauffer, Durham, 5,118,422 A * 6/1992 Cooper et al. ................ 210,636 NC (US); Paolo MacCarini. Durham, (Continued) NC (US); Katherine Sarah Hansen, Cary, NC (US); Diane Renee Fels, FOREIGN PATENT DOCUMENTS Morrisville, NC (US); Cory Robert EP 2130553 A1 * 12/2009 ............. A61K 41.00 Wyatt, Durham, NC (US); Mark Wesley WO WO 2008, 118234 A2 10/2008 Dewhirst, Durham, NC (US) WO WO 2008118234 A2 * 10, 2008 .............. HOL 31,04 (73) Assignees: IMMUNOLIGHT, LLC, Detroit, MI OTHER PUBLICATIONS (US); DUKE UNIVERSITY, Durham, International Search Report and Written Opinion of the International NC (US) Searching Authority issued Mar. 28, 2011, in Patent Application No. PCT/US 2010/0561.78. *) Notice: Subject to anyy disclaimer, the term of this patent is extended or adjusted under 35 (Continued) U.S.C. -
Development of Wireless Power Transmission System for Transfer Cart with Shortened Track
applied sciences Article Development of Wireless Power Transmission System for Transfer Cart with Shortened Track Jae Sik Jin 1, Sunghun Jung 2 and Han Joo Kim 3,* 1 Department of Mechanical Design, Chosun College of Science and Technology, Gwangju 61453, Korea; [email protected] 2 Department of Smart Mobile Convergence System, Chosun University, Gwangju 61452, Korea; [email protected] 3 Department of Convergence Technology Engineering, Jeonbuk National University, Jeonju 54896, Korea * Correspondence: [email protected]; Tel.: +82-10-3863-1201 Received: 19 April 2020; Accepted: 7 July 2020; Published: 8 July 2020 Abstract: In this study, a wireless power transmission (WPT) system for high power was developed to supply the wirelessly powered transfer cart for a clean environment (such as liquid crystal display (LCD), semiconductor, and flat panel display (FPD) device industries) to improve the cleanliness of related industrial production lines and save energy. The power transmission method of WPT and the core design were optimized, and a shortened track was fabricated to enable WPT via short power lines for diverse applications in a small space-constrained workshop. In realizing the shortened Litz wire system, the amount of heat generated increased due to the increased resistance in the system, and efforts were made to improve the thermal performance. A simple approach was also proposed to estimate the skin depth caused by the skin effects in a cable made up of multiple strands of multiple wires, validated through thermal analysis by using ANSYS software in terms of heat generation by an electric field. Structure designs were implemented to improve the heat transfer performance, and the experimental results of WPT systems at a power level of 21.54 kW demonstrate that the power transfer distance of WPT was above 15 mm with a charging efficiency above 83.24%. -
Measurement of Dielectric Material Properties Application Note
with examples examples with solutions testing practical to show written properties. dielectric to the s-parameters converting for methods shows Italso analyzer. a network using materials of properties dielectric the measure to methods the describes note The application | | | | Products: Note Application Properties Material of Dielectric Measurement R&S R&S R&S R&S ZNB ZNB ZVT ZVA ZNC ZNC Another application note will be will note application Another <Application Note> Kuek Chee Yaw 04.2012- RAC0607-0019_1_4E Table of Contents Table of Contents 1 Overview ................................................................................. 3 2 Measurement Methods .......................................................... 3 Transmission/Reflection Line method ....................................................... 5 Open ended coaxial probe method ............................................................ 7 Free space method ....................................................................................... 8 Resonant method ......................................................................................... 9 3 Measurement Procedure ..................................................... 11 4 Conversion Methods ............................................................ 11 Nicholson-Ross-Weir (NRW) .....................................................................12 NIST Iterative...............................................................................................13 New non-iterative .......................................................................................14 -
Physics 115 Lightning Gauss's Law Electrical Potential Energy Electric
Physics 115 General Physics II Session 18 Lightning Gauss’s Law Electrical potential energy Electric potential V • R. J. Wilkes • Email: [email protected] • Home page: http://courses.washington.edu/phy115a/ 5/1/14 1 Lecture Schedule (up to exam 2) Today 5/1/14 Physics 115 2 Example: Electron Moving in a Perpendicular Electric Field ...similar to prob. 19-101 in textbook 6 • Electron has v0 = 1.00x10 m/s i • Enters uniform electric field E = 2000 N/C (down) (a) Compare the electric and gravitational forces on the electron. (b) By how much is the electron deflected after travelling 1.0 cm in the x direction? y x F eE e = 1 2 Δy = ayt , ay = Fnet / m = (eE ↑+mg ↓) / m ≈ eE / m Fg mg 2 −19 ! $2 (1.60×10 C)(2000 N/C) 1 ! eE $ 2 Δx eE Δx = −31 Δy = # &t , v >> v → t ≈ → Δy = # & (9.11×10 kg)(9.8 N/kg) x y 2" m % vx 2m" vx % 13 = 3.6×10 2 (1.60×10−19 C)(2000 N/C)! (0.01 m) $ = −31 # 6 & (Math typos corrected) 2(9.11×10 kg) "(1.0×10 m/s)% 5/1/14 Physics 115 = 0.018 m =1.8 cm (upward) 3 Big Static Charges: About Lightning • Lightning = huge electric discharge • Clouds get charged through friction – Clouds rub against mountains – Raindrops/ice particles carry charge • Discharge may carry 100,000 amperes – What’s an ampere ? Definition soon… • 1 kilometer long arc means 3 billion volts! – What’s a volt ? Definition soon… – High voltage breaks down air’s resistance – What’s resistance? Definition soon.. -
High Dielectric Permittivity Materials in the Development of Resonators Suitable for Metamaterial and Passive Filter Devices at Microwave Frequencies
ADVERTIMENT. Lʼaccés als continguts dʼaquesta tesi queda condicionat a lʼacceptació de les condicions dʼús establertes per la següent llicència Creative Commons: http://cat.creativecommons.org/?page_id=184 ADVERTENCIA. El acceso a los contenidos de esta tesis queda condicionado a la aceptación de las condiciones de uso establecidas por la siguiente licencia Creative Commons: http://es.creativecommons.org/blog/licencias/ WARNING. The access to the contents of this doctoral thesis it is limited to the acceptance of the use conditions set by the following Creative Commons license: https://creativecommons.org/licenses/?lang=en High dielectric permittivity materials in the development of resonators suitable for metamaterial and passive filter devices at microwave frequencies Ph.D. Thesis written by Bahareh Moradi Under the supervision of Dr. Juan Jose Garcia Garcia Bellaterra (Cerdanyola del Vallès), February 2016 Abstract Metamaterials (MTMs) represent an exciting emerging research area that promises to bring about important technological and scientific advancement in various areas such as telecommunication, radar, microelectronic, and medical imaging. The amount of research on this MTMs area has grown extremely quickly in this time. MTM structure are able to sustain strong sub-wavelength electromagnetic resonance and thus potentially applicable for component miniaturization. Miniaturization, optimization of device performance through elimination of spurious frequencies, and possibility to control filter bandwidth over wide margins are challenges of present and future communication devices. This thesis is focused on the study of both interesting subject (MTMs and miniaturization) which is new miniaturization strategies for MTMs component. Since, the dielectric resonators (DR) are new type of MTMs distinguished by small dissipative losses as well as convenient conjugation with external structures; they are suitable choice for development process.