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Dissertations / Theses on the topic 'Split ring resonators (SRR)'

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1

Lahiri, Basudev. "Split Ring Resonator (SRR) based metamaterials." Thesis, University of Glasgow, 2010. http://theses.gla.ac.uk/1622/.

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Metamaterials are artificial materials that are known to produce extraordinary electromagnetic responses due to their constituent artificially-engineered micro- or nanostructures of dimensions smaller than that of the wavelength of light. The Split ring resonator (SRR) is such a nanostructure that forms the basic unit of a metamaterial. Since the dimensions of the SRRs are required to be smaller than the resonance wavelength, it becomes critical when response is required at the near infrared and optical wavelengths. In this thesis the various properties of the nanoscale SRRs are studied that r
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2

Yasar, Orten Pinar. "Numerical Analysis, Design And Two Port Equivalent Circuit Models For Split Ring Resonator Arrays." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611620/index.pdf.

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Split ring resonator (SRR) is a metamaterial structure which displays negative permeability values over a relatively small bandwidth around its magnetic resonance frequency. Unit SRR cells and arrays have been used in various novel applications including the design of miniaturized microwave devices and antennas. When the SRR arrays are combined with the arrays of conducting wires, left handed materials can be constructed with the unusual property of having negative valued effective refractive indices. In this thesis, unit cells and arrays of single-ring multiple-split type SRR structures are
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Ates, Kazim Ozan. "Theoretical Investigation Of Metamaterials: Srr Structures And Periodic Arrays Of Thin Conducting Wires." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609485/index.pdf.

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In recent years, there has been an increasing interest on left handed metamaterials because of their possible innovative applications. The pioneer study introducing such materials was brought out by V. G. Veselago in 1968 [1]. In his work, Veselago proposed a medium having simultaneously negative electric permittivity and magnetic permeability and investigated its electromagnetic characteristics. He found out that the electric field, magnetic field and the propagation vector form a left handed triplet, thus named such materials as &ldquo<br>Left Handed Materials&rdquo<br>. Despite the signific
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4

Rodríguez, Pérez Ana María. "Synthesis of Planar Microwave Circuits based on Metamaterial Concepts through Aggressive Space Mapping." Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/48465.

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RF and microwave applications represent one of the fastest-growing segments of the high performance electronics market, where ongoing innovation is critical. Manufacturers compete intensively to meet market needs with reduced cost, size, weight and many other performance criteria demands. Under this scenario, transmission lines based on metamaterial concepts can be considered a very interesting alternative to the conventional transmission lines. They are more compact (compatible with planar manufacturing processes) and present higher degrees of design flexibility. Furthermore, metamater
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5

Sahin, Levent. "Transmission And Propagation Properties Of Novel Metamaterials." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610277/index.pdf.

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Metamaterials attracted significant attention in recent years due to their potential to create novel devices that exhibit specific electromagnetic properties. In this thesis, we investigated transmission and propagation properties of novel metamaterial structures. Electromagnetic properties of metamaterials are characterized and the resonance mechanism of Split Ring Resonator (SRR) structure is investigated. Furthermore, a recent lefthanded metamaterial structure for microwave regime called Fishnet-type metamaterial is studied. We demonstrated the left-handed transmission and negative phase ve
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Ayad, Houssam. "Antenna Performance Control using Metamaterials." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENT013/document.

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Le travail de cette thèse est en rapport avec les métamatériaux et ses applications. Tout d’abord, un état de l’art est dressé en présentant leur évolution depuis leur apparition en 19ème siècle jusqu’au nos jours. Les notions sur les milieux chirale, bi-anisotrope, cristaux photoniques et quelques applications dans ces milieux sont données. Ensuite, nous présentons les équations classiques de Maxwell dans les milieux complexes. L’effet bi-anisotrope dans les métamatériaux est ensuite validé par l’extraction des paramètres caractéristiques du matériau main gauche (LHM). La validation a été fai
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7

Clark, Alasdair W. "Nanophotonic split-ring resonators as dichroics for molecular spectroscopy." Thesis, University of Glasgow, 2009. http://theses.gla.ac.uk/1302/.

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The unique optical properties of metallic nanostructures have enabled the creation of a new generation of ultra sensitive biosensors based on vibrational spectroscopy. Through strict engineering of structural morphology, a nanometal’s free electrons can be tuned to resonate at a particular frequency, resulting in amplification and confinement of the electromagnetic field around certain areas of the structure. Molecules situated within these areas experience a greater degree of polarisation due to the oscillating plasmon field, a phenomena which, when combined with resonance Raman spectroscopy,
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8

Noori, Ahmed Sabah. "Tunable microwave filters based on dielectric split ring resonators." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8651/.

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This thesis investigates a new type of microwave tunable filter; the filter is designed based on a new type of resonator called Dielectric Split Ring Resonator (Dielectric-SRR). The new tunable filter is utilised to tune the filter bandwidth at about 2.3 GHz. This bandwidth tuning is achieved by rotating the filter resonators and without adding tuning elements such as screws or varactor diodes. In the measurement the filter resonators are rotated by hand. This thesis also investigates the new Dielectric-SRRs in term of their losses and unloaded quality factor. These new microwave resonators ar
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9

Limaye, Aparna U. "Size reduction of microstrip antennas using left-handed materials realized by complementary split-ring resonators /." Link to online version, 2006. https://ritdml.rit.edu/dspace/handle/1850/2428.

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10

Pasakawee, Sarinya. "Left-handed metamaterials realized by complementary split-ring resonators for RF and microwave circuit applications." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/lefthanded-metamaterials-realized-by-complementary-splitring-resonators-for-rf-and-microwave-circuit-applications(ee526cec-0c7a-4733-8534-7023c364f786).html.

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A new equivalent circuit of left-handed (LH) microstrip transmission line loaded with Complementary split-ring resonators (CSRRs) is presented. By adding the magnetic coupling into the equivalent circuit, the new equivalent circuit presents a more accurate cutoff frequency than the old one. The group delay of CSRRs applied with microstrip transmission line (TL) is also studied and analyzed into two cases which are passive CSRRs delay line and active CSRRs delay line. In the first case, the CSRRs TL is analyzed. The group delay can be varied and controlled via signal frequency which does not ha
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11

Seetharaman, Sathya Sai. "Electromagnetic interactions in one-dimensional metamaterials." Thesis, University of Exeter, 2018. http://hdl.handle.net/10871/33746.

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Metamaterials offer the freedom to tune the rich electromagnetic coupling between the constituent meta-atoms to tailor their collective electromagnetic response. Therefore, a comprehensive understanding of the nature of electromagnetic interactions between meta-atoms is necessary for novel metamaterial design, which is provided in the first part of this thesis. The subsequent work in the thesis applies the understanding from the first part to design and demonstrate novel one-dimensional metamaterials that overcome the limitations of metamaterials proposed in literature or exhibit electromagnet
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12

Niesler, Fabian Bernd Peter [Verfasser], and M. [Akademischer Betreuer] Wegener. "Nonlinear Optics of Split-Ring Resonators and their Application as a Thermal Detector / Fabian Bernd Peter Niesler. Betreuer: M. Wegener." Karlsruhe : KIT-Bibliothek, 2012. http://d-nb.info/102803105X/34.

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13

Iyer, Srinivasan. "Effects of surface plasmons in subwavelength metallic structures." Doctoral thesis, KTH, Optik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-103613.

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The study of optical phenomena related to the strong electromagnetic response of noble metals (silver (Ag) and gold (Au) being most popular) over the last couple of decades has led to the emergence of a fast growing research area called plasmonics named after 'surface plasmons' which are electron density waves that propagate along the interface of a metal and a dielectric medium. Surface plasmons are formed by the coupling of light to the electrons on the metal surface subject to the fulfillment of certain physical conditions and they are bound to the metal surface. Depending on whether the me
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14

Sousa, Neto Marinaldo Pinheiro de. "Um estudo de metamaterial em antenas de microfita." Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15247.

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Made available in DSpace on 2014-12-17T14:55:19Z (GMT). No. of bitstreams: 1 MarinaldoPSN_TESE.pdf: 2731148 bytes, checksum: 7c2caa3355d4d42f0702baf0d147bf97 (MD5) Previous issue date: 2014-04-25<br>Universidade Federal do Rio Grande do Norte<br>Metamaterials have attracted a great attention in recent years mostly due to their electromagnetic properties not found in nature. Since metamaterials began to be synthesized by the insertion of artificially manufactured inclusions in a medium specified host , it provides the researcher a broad collection of independent parameters such as the electro
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15

Alibakhshikenari, M., B. Virdee, C. H. See, et al. "Wideband printed monopole antenna for application in wireless communication systems." 2018. http://hdl.handle.net/10454/15363.

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Yes<br>Empirical results of an electrically small printed monopole antenna is described with fractional bandwidth of 185% (115 MHz–2.90 GHz) for return-loss better than 10 dB, peak gain and radiation efficiency at 1.45 GHz of 2.35 dBi and 78.8%, respectively. The antenna geometry can be approximated to a back-to-back triangular shaped patch structure that is excited through a common feed-line with a meander-line T-shape divider. The truncated ground-plane includes a central stub located underneath the feed-line. The impedance bandwidth of the antenna is enhanced with the inclusion of meander-l
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16

Chen, Shih-Chia, and 陳世家. "Wide-band Circuit Extraction of Complementary Split-Ring Resonators." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/10242558882911371668.

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碩士<br>大葉大學<br>電機工程學系<br>100<br>In this thesis, we use coupling between a CSRR (Complementary Split-Ring Resonators) structure and a simple signal line to design a one-order low pass filter. First we use a Chebyshev filter form reference, and Resonance theory to find basic equivalent circuit, and extraction elements value. We want to find physical meaning about resonance frequency by simulate the structure. We analyze electric field, electric current and magnetic current to make this theory more consummate. We also propose some modification of equivalent circuit to make simulate result more
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17

Lin, Hao-Tsun, and 林浩存. "Isotropic Perfect Absorber Using Vertical Nano Split-Ring Resonators." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/83859536841019986374.

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碩士<br>國立臺灣大學<br>應用物理研究所<br>104<br>Metamaterials are artificial materials which cannot be found in nature. The properties of these materials are not from the component but from the artificial structures in subwavelength scale. In this thesis, we use ebeam lithography to make the three dimensional erected split-ring resonators, and fabricate metamaterial perfect absorber by the three dimensional erected split-ring resonators. We adopt the metal-insulator-metal(MIM) structure. The button layer is a gold layer as a mirror, and the middle layer is ZnS-SiO2. The top layer adopts erected split-ring r
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18

Chi, Kai-Cheng, and 紀凱程. "Design of Slot Loop Antennas Using Split-Ring Resonators." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/27018627685674808354.

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碩士<br>國立臺灣大學<br>電信工程學研究所<br>97<br>Many literatures about split-ring resonators(SRRs)have been presented for application in recent years. When SRRs are arranged periodically, it could generate the negative permeability which couldn’t find in nature. It is also called the metamaterial. SRRs are applied in transmission lines and antennas extensively. The analysis of SRR is almost complete, for instance, its electromagnetic characteristics, effective permeability which is obtained by scattering parameters, and effective inductance or capacitance in equivalent circuit. With the rapid developmen
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19

Kuan-ZhouChen and 陳冠州. "High Sensitive Active Split-Ring Resonators for Measuring Permittivity of Liquid." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/x46b9b.

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碩士<br>國立成功大學<br>電機工程學系<br>104<br>This thesis proposed a high sensitive dual active split ring resonator (DA-SRR) microwave sensors to measure the permittivity and the concentration of the liquid. Due to the external perturbation impacts caused by the materials under test (MUT) on the SRR, the resonator generates a resonant frequency offset, which can be appled to detect the dielectric constant of the MUT or the test liquids. By an active feedback network to compensate the loss of the resonantor, the quality factor (Q-factor) of the traditional passive microwave resonantor can be enlarged. Ther
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20

Chen, Wang-Lin, and 陳旺麟. "Analysis and Design of Split-Ring Resonators for Tunable Negative Permeability." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/12020968506240497984.

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碩士<br>國立成功大學<br>製造工程研究所碩博士班<br>97<br>The periodic split-ring resonator (SRR), magnetic atom, array have negative effect permeability near the resonance frequency when surrounding by external electromagnetic wave. Metamaterial(MTM) which has negative refractive index materials, so called Left-Hand Material (LHM), within negative dielectric permittivity and negative magnetic permeability in some frequency ranges is structured by periodic thin wire and SRR array. However, SRR dominates the negative refractive index frequency of MTM due to the narrow negative permeability frequency ranges rather t
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21

Chen, Chi-Wei, and 陳志偉. "A Compact Size Microstrip Diplexer Design Based On Complementary Split Ring Resonators." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/40090961022392355661.

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碩士<br>國立交通大學<br>電信工程研究所<br>100<br>In this thesis, we proposed miniaturization bandpass filters (BPFs) design based on complementary split ring resonators (CSRRs) with two different operating frequency. The two BPFs are operated at 2.45 GHz and 1.85 GHz, respectively. The complementary split ring resonator, which is one kind of the meta-material, since it has unique electromagnetic characteristics, therefore there are many academic literatures about CSRRs which are applied on miniaturization of antennas and microwave circuits. In the first part of this thesis, a BPF is implemented by utilizing
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22

Hsiao, Chih-Ting, and 蕭至廷. "Fabrication of three dimensional split ring resonators by metal stress-driven assembly method." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/90544112456106874098.

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碩士<br>國立臺灣大學<br>物理研究所<br>100<br>This paper demonstrates a self-assembly strategy for fabricating three dimensional (3D) metamaterials. This strategy represents the desired 3D curving prongs of the split ring resonators (SRRs) erected by metal stress force with appropriate thin film parameters. Transmittance spectra and field patterns corresponding to each resonance modes are calculated by finite element method (FEM). The eigen-modes of the SRRs can be excited by normal illumination with polarization state parallel to the erected SRRs, which are unlike for the cases of planar SRRs. This method
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23

Silalahi, Vanna Chrismas, and 樊聖誕. "Microwave propagation guided by one dimensional array of strongly coupled split ring resonators." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/77051641295588939874.

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碩士<br>國立中興大學<br>物理學系所<br>105<br>Abstract We experimentally study microwave transmission guided by one dimensional (1D) array of coupled double split ring resonators (DSRR) and complementary split ring resonators (CSRR). Dimer of double split ring resonators (DSRR) and complementary split ring resonator (CSRR) are used as the building blocks of the 1D system. DSRRs and CSRRs are respectively fabricated on the front- and back-sides of a printed circuit board by using standard photolithography. The resonator array is coupled to two microstrips at each end for S-parameter measurement. Results are
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24

Albishi, Ali. "Detection of Sub-Millimeter Surface Cracks using Complementary Split-Ring Resonator." Thesis, 2012. http://hdl.handle.net/10012/6827.

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Many interesting ideas have emerged from research on electromagnetic eld interactions with di erent materials. Analyzing such interactions has extracted some essential proper- ties of the materials. For example, extracting constitutive parameters such as permittivity, permeability, and conductivity, clari es a material's behavior. In general, the electromag- netic eld interacts with materials either in the far- eld or near- eld of a source. This study focuses on the principle of near- eld microwave microscopy for detection purposes. Many studies have focused on the use of an electrically sma
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25

Jhang, Syuan-Wai, and 張軒維. "Accurate Parameters Extraction of Complementary Split-Ring Resonators and Its Applications for Designing Microstrip Filters." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/75556925740249605876.

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碩士<br>大葉大學<br>電機工程學系<br>99<br>This paper presents an accurate design technique for a low-pass filter with complementary split-ring resonators (CSRR).We extract the complementary split-ring resonators (CSRR) equivalent circuit component values for designing filter.The CSRR not only can significantly increase the characteristic impendance of microstrip line,but also improve stopband performance by rejecting the higher order passband.For increasing efficiency and reducing the area of circuits, we usually utilize the defected ground structure, but the conventional design did not consider the paras
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26

Chang, Ming-Hsuan, and 張明軒. "Intracellular Imaging of Living Cells by Split Ring Resonators Microscopy in Near-Infrared (NIR) Region." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/92903265257628820971.

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27

Leon and 李喆龍. "The technique to suppress the second harmonic of microstrip bandpass filter with Split Ring Resonators." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/97026361874382457090.

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碩士<br>樹德科技大學<br>電腦與通訊研究所<br>94<br>In the RF communicative world, the quality of wireless signals is key factor. The filters are a kind of important component application in the RF field. In this thesis, we used the physics technique “Split Ring Resonators (SRRs)” which is based on the “Dual –Mode Ring Resonator” structure application of RF filters, and suppressed the second harmonic successfully. Using the technique of Split Ring Resonators had many advantages. In this research we found the Split Ring Resonators were designed easily in many structures and didn’t change the major structure. The
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28

Wu, Cheng-Zhou, and 吳承洲. "Development of Perturbation-Injection-Locked Vital-Sign Sensors Based on Self-Oscillating Complementary Split-Ring Resonators." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/mzbpza.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>107<br>This thesis proposes a non-contact vital-sign sensor based on the principle of injection-locking, which is applied to detect respiration and wrist/finger pulse. Since the proposed sensor is developed based on both the injection-locked principle and perturbation theory, it is named as “perturbation-injection-locked (PIL) sensor” in this thesis. The PIL sensor uses a complementary split ring resonator (CSRR) as the frequency selective element and sensing component. As it is operated in the near-field region, it has the advantages of low radiation power and high
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29

Chen, Wei-Jei, and 陳暐傑. "UWB Antenna Using Slot-Type Split Ring Resonators and L Slot Notch Dual Band a Study." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/15409959498346481581.

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碩士<br>龍華科技大學<br>電子工程系碩士班<br>104<br>The new configuration of ultra-wideband (UWB) monopole antennas design for ultra wideband (UWB) applications is proposed. These antennas are designed on PCB FR4 substrate with relative permittivity εr=4.4, loss tangent tanδ=0.0245, and thickness h=1.6mm. By adjusting the different parameters, simulated and experimental results of the antenna are suitable for UWB operations. With adjusting the size and the position of two slot-type SRRs on the ground plane and two L-shaped slots on conducting patches, the UWB antennas produce two band-notched filters and dec
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30

Ahn, Chi Hyung. "Microwave Metamaterial Applications using Complementary Split Ring Resonators and High Gain Rectifying Reflectarray for Wireless Power Transmission." Thesis, 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8575.

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In the past decade, artificial materials have attracted considerable attention as potential solutions to meet the demands of modern microwave technology for simultaneously achieving component minimization and higher performance in mobile communications, medical, and optoelectronics applications. To realize this potential, more research on metamaterials is needed. In this dissertation, new bandpass filter and diplexer as microwave metamaterial applications have been developed. Unlike the conventional complementary split ring (CSRR) filters, coupled lines are used to provide larger coupling capa
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31

Yang, Sui-Chin, and 楊仕勤. "Design of Multilayered Bandpass Filters and Using Complementary Split-Ring Resonators to Realize Wide Stopband Lowpass Filters." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/65847539239851680375.

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碩士<br>國立中正大學<br>電機工程所<br>96<br>This thesis included two parts. The first part is the wide stopband lowpass filters. Three different structures of lowpass filters are proposed. Using complementary split-ring resonators in the design of lowpass filters can generate different transmission zeros, and thus connect four rings to realize a wide sotpband lowpass filters. The second part is using LTCC technology to realize multilayered bandpass filters with transmission zeros. Moreover, two different equivalent circuits are proposed, and the detailed design procedures of two proposed circuits are also
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32

Yao, Hai-Ying, and Le-Wei Li. "Performance Analysis of Metamaterials With Two-dimensional Isotropy." 2003. http://hdl.handle.net/1721.1/3889.

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A two-dimensional isotropic metamaterials formed by crossed split-ring resonators (CSRRs) are studied in this paper. The effective characteristic parameters of this media are determined by quasi-static Lorentz theory. The induced current distributions of a single CSRR at the resonant frequency are presented. Moreover, the dependence of the resonant frequency on the dimensions of single CSRR and the spaces of the array are also discussed.<br>Singapore-MIT Alliance (SMA)
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Kabiri, Ali. "Artificial Magnetic Materials: Limitations, Synthesis and Possibilities." Thesis, 2010. http://hdl.handle.net/10012/5579.

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Artificial magnetic materials (AMMs) are a type of metamaterials which are engineered to exhibit desirable magnetic properties not found in nature. AMMs are realized by embedding electrically small metallic resonators aligned in parallel planes in a host dielectric medium. In the presence of a magnetic field, an electric current is induced on the inclusions leading to the emergence of an enhanced magnetic response inside the medium at the resonance frequency of the inclusions. AMMs with negative permeability are used to develop single negative, or double negative metamaterials. AMMs with enhan
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