bluuebunny/crossref_metadata_2025_split huggingface dataset:
Compact coplanar waveguide‐fed monopole antenna with a folded ground strip for 5‐GHz wireless applications
Authors: Sim Chow‐Yen‐Desmond , Ho Chung‐Hsien , Chien Yu‐Lun 
Published: October 2015

AbstractThe design of a compact coplanar waveguide‐fed monopole antenna partially surrounded and coupled by a folded ground strip is presented. By properly tuning the gap between the monopole antenna and the ground strip, it is able to operate in the 5‐GHz band for wireless application. From the experimental results, a resonant mode excited at around 5.5 GHz is observed with 10‐dB bandwidth measured from 4.88 to 6.3 GHz. Good radiation patterns with near omnidirectional pattern in the azimuth plane are also observed. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26330
Highly integrated three‐dimensional synthetic transmission line design on silicon substrate
Authors: Chiang Meng‐Ju 
Published: October 2015

AbstractThis letter presents a highly integrated three‐dimensional synthetic quasi‐TEM transmission line (TL) design with high slow‐wave factor (SWF).By following the summarized design guidelines, the prototype provides a high flexibility to adjust the structural parameters of the TL for synthesizing the desired guiding properties. Two typical examples of the 35‐ and 70‐Ω synthetic TLs based on the standard 0.18‐μm 1P6M CMOS technology reveal that the SWFs achieve 2.90 and 2.78 at 20.0 GHz, respectively, indicating the increases of 45.0 and 39.0% over than theoretical limit of the quasi‐TEM TL. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2604–2607, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26337
Fabrication and characteristics of phase‐shifted beat gratings induced by CO2 laser
Authors: Fan Yan‐en , Zhu Tao , Shi Leilei , Rao Yun‐Jiang 
Published: October 2015

AbstractWe propose and investigate a phase‐shifted long‐period fiber grating (LPFG) written by CO2 laser in twisted single‐mode fibers (SMFs).For the beating effect, two peaks of LPFG derived from phase‐shift further split into two peaks, respectively. The evolution and characterization of the transmission spectra were investigated. The channel spacing of the phase‐shifted LPFGs written in twisted Er‐doped fiber could be much narrower than that of which written in twisted normal SMF. Polarization dependent loss of the phase‐shifted beat‐gratings is less than 0.6 dB. This type of gratings provides potential applications in optical communication systems, such as course wavelength division multiplexing devices. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2526–2530, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26340
Liquid foam dielectrics for high frequency integratable antennas
Authors: Elmezughi Abdurrezagh S. , Rowe Wayne S. T. 
Published: October 2015

AbstractAn innovative fabrication technique to create nominal height liquid foam substrate layer for integratable antennas is introduced.The liquid foam layer is intended to replace a Rohacell foam or air substrate, especially at millimeter‐wave frequencies, where antenna designs require substrate layers less than a millimeter thick. The performance of hi‐lo stacked patch antenna with 0.5‐mm‐thick layer of ECCOSTOCK FPH is presented. The 10‐dB return loss bandwidth of the antenna is 18.2%, and the radiation patterns and gain are also presented and discussed. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2453–2456, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26345
Novel MMIC architectures of wideband microwave active filters for frequency tuning and bandwidth multiplexing
Authors: Bergeras François , Duême Philippe , Plaze Jean‐Philippe , Darcel Laurence , Jarry Bernard , Campovecchio Michel 
Published: October 2015

AbstractThis article reports on novel architectures for designing tunable microwave active bandpass filters in monolithic microwave integrated circuit (MMIC) technology.The first two MMICs illustrate a specific synthesis method of microwave active bandpass filters and its extension to the frequency tunability, both were designed using the UMS PH25 process (UMS foundry; 0.25 μm GaAs p‐type high electron mobility transistor (pHEMT)). The third MMIC chip, designed using the OMMIC ED02AH process (OMMIC foundry; 0.2 μm GaAs pHEMT), illustrates a new application of the previous synthesis method, and concerns the design of an active filter allowing bandwidth multiplexing. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2680–2689, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26347
Dual‐band bandpass filter using dual‐mode resonators
Authors: Lee Jahyeon , Lim Yeongseog 
Published: October 2015

AbstractA compact microstrip dual‐band bandpass filter (DBBPF) with controllable bandwidth for each passband is proposed. Each passband is independently designed using two different dual‐mode resonators. The proposed DBBPF has three transmission zeros. Two transmission zeros are generated by each dual‐mode resonator. An additional transmission zero is generated by input/output port coupling. The DBBPF application is designed for 2.4/5.7 GHz WLAN. Experimental measurements are presented to validate the theory. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2515–2517, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26355
Flicker noise reduction in RF CMOS mixer using differential active inductor
Authors: Abdelghany M. A. , Pokharel R. K. , Kanaya H. , Yoshida K. 
Published: October 2015

AbstractThis article presents a low flicker noise (1/f), double‐balanced Gilbert‐cell mixer. As the down converted base‐band signal is strongly affected by the low‐frequency flicker noise, resulting in mixer signal‐noise ratio (SNR) degradation, a dynamic current injection technique has been used to reduce the flicker noise corner frequency. Differential active inductor has been used to tune the tail capacitance at the node between the local oscillator (LO) switches and the radio frequency (RF) transconductance stages, resulting in reduction of RF leakage. RF and LO leakage has been minimized by adding an on‐chip low‐pass filter to the mixer output. The mixer has been designed and fabricated using Taiwan Semiconductor Manufacture Company (TSMC) 0.18‐μm 1P6M complementary metal‐oxide‐semiconductor FET (CMOS) process. The performance of the fully integrated mixer is given. With RF of 2.4 GHz, intermediate frequency of 10 MHz and LO power of −5 dBm, conversion gain of 12 dB, input third order intercept point (IIP3) of −5.5 dBm, and single‐side band noise (SSB‐NF) figure of 15 dB with flicker noise corner frequency of 300 KHz had been measured. The mixer consumes 19.8 mW from 1.8 V supply. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2553–2556, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26366
A 180° Tunable Analog Phase Shifter Based on a Single All‐Pass Unit Cell
Authors: Khoder K. , Pérennec A. , Le Roy M. 
Published: October 2015

ABSTRACTThis article describes an analog phase shifter able to provide a continuously tunable phase shift up to 180° by using a single all‐pass unit cell. The proposed topology is compact and easy to implement, and brings an interesting compromise between phase variation, insertion and return losses. Indeed, for a 7.5:1 tuning ratio of varactor capacitance, a phase shift variation of more than 186° is obtained from 6 to 7 GHz with a maximum insertion loss of 1.8 dB. The 105°/dB resulting Figure‐of‐Merit is thus among the best in distributed approaches with varactors. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2915–2918, 2013
A Novel Design of 5.5/7.5 ghz Dual Band‐Notched Ultrawideband Antenna
Authors: Ojaroudi Nasser , Ojaroudi Hamed , Ojaroudi Mohammad , Ghadimi Noradin 
Published: October 2015

ABSTRACTThis article presents a new design of ultrawideband (UWB) monopole antenna with the characteristics of dual band rejection .The antenna consists of a square radiating patch with U‐shaped slot and a pair of Γ‐shaped slits, and a ground plane with an open‐circuit slit which provides a wide usable fractional bandwidth of more than 120%. By applying the open‐circuit slit in the ground plane, a new resonance at 12.1 GHz is excited and much wider impedance bandwidth can be produced. The band notching of wireless local area network (5–6 GHz), is achieved by inserting a U‐shaped slot, and a band‐notching for downlink of X‐band satellite communication systems (7.25–7.75 GHz) is obtained by embedding two Γ‐shaped slits at square radiating patch. The simulated and measured results show that the antenna design exhibits an operating bandwidth (VSWR<2) from 2.86 to 12.92 GHz excluding the rejected bands. The proposed antenna configuration is simple, easy to fabricate and can be integrated into any UWB system. The proposed antenna has a symmetrical structure which improves the antenna radiation pattern characteristics. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2910–2915, 2013
Performance of a Reconfigurable Reflector Antenna with Scanning Capability Using Low Cost Plasma Elements
Authors: Jusoh M. T. , Lafond O. , Colombel F. , Himdi M. 
Published: October 2015

ABSTRACTA reflector antenna with rounded shape is designed to collimate beam radiated by a quarter wave antenna operating at 2.4 GHz by implementing low cost plasma elements. The measured gain is 9 dBi, cross‐polarization remains below −10 dB and operating bandwidth of the antenna is almost 46 percent. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2869–2874, 2013
CPW‐fed Zeroth‐order Resonator Antenna Using Shorted CRLH Transmission Line
Authors: Dinesh R. , Vinod V. K. T. , Deepak U. , Vinesh P. V. , Mohanan P. 
Published: October 2015

ABSTRACTA novel composite right/left‐handed (CRLH) coplanar waveguide (CPW)‐fed zeroth‐order resonator antenna is proposed. The shorted CRLH transmission line exhibits zeroth‐order resonance at 2 GHz and operates with narrow bandwidth. The dispersion analysis is also carried out and presented in this article. The proposed antenna has been fabricated and tested. Omnidirectional radiation pattern with a gain 3.5 dBi has been obtained. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2844–2847, 2013
Enhanced Tunable Nonreciprocal Effect in CRLH Coplanar Transmission Line on YIG Without Series Capacitive Loading
Authors: Zhou Tao , Le Berre Martine , Vest Gwenaelle , Calmon Francis , Boukchiche Faris , Payet‐Gervy Béatrice , Vincent Didier , Grégoire Joëlle , Ayadi Khaled , Sabac Andrei 
Published: October 2015

ABSTRACTThis work brings the experimental evidence of an enhanced nonreciprocal effect on a composite right/left‐handed coplanar transmission line on yttrium iron garnet without series capacitive loading. The measured isolation ratio is increased to 20 dB and can be tuned. Experimental results are confirmed by full wave simulation results. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2929–2931, 2013
Free Space Permittivity Determination Technique
Authors: Seyfried Daniel , Menschikow Dmitrij , Schoebel Joerg 
Published: October 2015

ABSTRACTA new approach for free space determination of the complex valued permittivity of soil and other materials is presented. The method is tailored for ground penetrating radar purposes where an averaged value of the permittivity for a certain bandwidth is desired. Coming with less demands on calibration and specimen configuration, our approach represents a robust algorithm with good accuracy and capability for in situ measurements. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2888–2892, 2013
Low Profile UWB Log‐Periodic Dipole Antenna for Wireless Communication with Notched Band
Authors: Khandelwal M. K. , Kanaujia Binod Kr , Gautam A. K. 
Published: October 2015

ABSTRACTA low profile Log‐Periodic dipole microstrip antenna is proposed for ultrawideband (UWB) applications. Logarithmically scaled dipoles with defected ground plane are fabricated on both of the sides of the dielectric substrate. The triangular taper transition is used for providing better matching. The proposed antenna shows an impedance bandwidth of 3.3–20.7 GHz, which covers the entire C, X, and Ku bands and partially S and K bands. The antenna shows stable radiation characteristics with a good front‐to‐back ratio for entire operating band. Further, a U‐shaped slot is integrated with the UWB antenna to provide a rejection function at narrowband wireless communication system such as IEEE 802.11a in USA (5.150–5.350 GHz and 5.725–5.825 GHz). The notched band is created at 5.8 GHz. The measured results reveal that the proposed antenna offers a very wide bandwidth with notched band at 5.8 GHZ. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2901–2906, 2013
Broadband Compact Quasi‐Yagi Antenna for Indoor Digital Tv
Authors: Lee Jong‐Ig , Yeo Junho , Cho Young‐Ki 
Published: October 2015

ABSTRACTIn this article, a design method for a broadband three‐element quasi‐Yagi antenna for indoor digital television (DTV) is presented. The antenna consists of a dipole fed by a coplanar strip (CPS) line, a rectangular patch‐type director, and a ground reflector. The transition between a microstrip (MS) feed line and the CPS line is implemented on the CPS to match the input impedance of the antenna with a 75‐Ω MS feed line. The impedance bandwidth is improved by appending a wide strip‐type patch director at a location close to the dipole driver. The antenna size is reduced by using a half bow‐tie‐shaped dipole and reflector. The antenna is designed and optimized for operation in the terrestrial DTV band (470–806 MHz) and is fabricated on an FR4 substrate. Although, the antenna size (240 mm by 200 mm) corresponds only to 0.36λ0 by 0.30λ0 (λ0; free space wavelength at 450 MHz), the experiment results show that the antenna has good performance, such as a wide impedance band of 450–848 MHz for a voltage standing wave ratio < 2, a moderate gain of 3.5–4.6 dBi, and a high front‐to‐back ratio > 10.4 dB. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2859–2863, 2013
The Healthy Brains and Behavior Study: objectives, design, recruitment, and population coverage
Authors: Liu Jianghong , Richmond Therese S. , Raine Adrian , Cheney Rose , Brodkin Edward S. , Gur Ruben C. , Gur Raquel E. 
Published: October 2015

AbstractViolence is increasingly viewed as a public health issue that may be ameliorated by health‐based interventions. The Healthy Brains and Behavior Study (HBBS) aims to identify environmental and biological risk factors for aggression in late childhood and to reduce aggression through psychological and nutritional treatments. Utilizing a cross‐disciplinary collaborative research approach, the HBBS has both human and animal components. The human component has two stages consisting of risk assessment followed by treatment. The risk assessment is based on 451 community‐residing children aged 11–12 years and their caregivers, during which genetic, brain imaging, neuroendocrine, psychophysiology, environment toxicology, neurocognitive, nutrition, psychological, social and demographic risk variables are collected. Children who met criteria (N = 219) for problematic aggressive behaviors were assigned to one of four treatment groups: cognitive‐behavior therapy (CBT) alone, nutritional supplements alone, both CBT and nutrition, or treatment‐as‐usual. Treatment duration was 12 weeks and all children whether in treatment or not were followed‐up at three, six, and 12 months. The animal component assessed the effects of dietary omega‐3 fatty acids on the development of aggression. This study contributes knowledge on how biological factors interact with social factors in shaping proactive and reactive aggression and assesses the efficacy of treatment approaches to reduce childhood aggression. Copyright © 2013 John Wiley & Sons, Ltd.
The NIMH Child Emotional Faces Picture Set (NIMH‐ChEFS): a new set of children's facial emotion stimuli
Authors: Egger Helen Link , Pine Daniel S. , Nelson Eric , Leibenluft Ellen , Ernst Monique , Towbin Kenneth E. , Angold Adrian 
Published: October 2015

AbstractWith the emergence of new technologies, there has been an explosion of basic and clinical research on the affective and cognitive neuroscience of face processing and emotion perception. Adult emotional face stimuli are commonly used in these studies. For developmental research, there is a need for a validated set of child emotional faces. This paper describes the development of the National Institute of Mental Health Child Emotional Faces Picture Set (NIMH‐ChEFS), a relatively large stimulus set with high quality, color images of the emotional faces of children. The set includes 482 photographs of fearful, angry, happy, sad and neutral child faces with two gaze conditions: direct and averted gaze. In this paper we describe the development of the NIMH‐ChEFS and data on the set's validity based on ratings by 20 healthy adult raters. Agreement between the a priori emotion designation and the raters' labels was high and comparable with values reported for commonly used adult picture sets. Intensity, representativeness, and composite “goodness” ratings are also presented to guide researchers in their choice of specific stimuli for their studies. These data should give researchers confidence in the NIMH‐ChEFS's validity for use in affective and social neuroscience research. Copyright © 2011 John Wiley & Sons, Ltd.
Identification of the molecular sex‐differentiation period in the siberian sturgeon
Authors: Vizziano‐Cantonnet Denise , Di Landro Santiago , Lasalle André , Martínez Anabel , Mazzoni Talita Sarah , Quagio‐Grassiotto Irani 
Published: October 2015

SUMMARYSexual development prior to gonadal sex differentiation is regulated by various molecular mechanisms. In fish, a “molecular sex‐differentiation period” has been identified in species for which sex can be ascertained prior to gonadal sex differentiation. The present study was designed to identify such a period in a species for which no genetic sex markers or monosex populations are available. Siberian sturgeons undergo a slow sex‐differentiation process over several months, so gonad morphology and gene expression was tracked in fish from ages 3–27 months to identify the sex‐differentiation period. The genes amh, sox9, and dmrt1 were selected as male gonad markers; cyp19a1a and foxl2a as female gonad markers; and cyp17a1 and ar as markers of steroid synthesis and steroid receptivity. Sex differentiation occurred at 8 months, and was preceded by a molecular sex‐differentiation period at 3–4 months, at which time all of the genes except ar showed clear expression peaks. amh and sox9 expression seemed to be involved in male sexual development whereas dmrt1, a gene involved in testis development in metazoans, unexpectedly showed a pattern similar to those of the genes known to be involved in female gonadal sex differentiation (cyp19a1 and foxl2a). In conclusion, the timing of and gene candidates involved with molecular sex differentiation in the Siberian sturgeon were identified. Mol. Reprod. Dev. 83: 19–36, 2016. © 2015 Wiley Periodicals, Inc.
DNA und Proteine schneiden — so geht es mit Metallkomplexen
Authors: Hormann Jan , Perera Chrischani , Kulak Nora 
Published: October 2015

AbstractSpezialisierte Enzyme spalten im Körper Nukleinsäuren und Proteine. Doch im Labor gelingt dies auch kleinen Metallkomplexen — beispielsweise Verbindungen mit dem makrocyclischen Liganden Cyclen. Solche DNA‐ und Protein‐Scheren könnten etwa in der Molekularbiologie und für therapeutische Zwecke nützlich sein.
Biosprit aus Algen?
Authors: Groß Michael 
Published: October 2015

AbstractAlgen zu fermentieren, um Biokraftstoffe herzustellen, gilt als eine zukunftsträchtige Strategie. Damit lassen sich die Nachteile des bisher verfügbaren Biosprits vermeiden, aber der perfekte Produktionsweg zum wirtschaftlich konkurrenzfähigen Algenbenzin ist noch nicht gefunden.
Nonincremental proper generalized decomposition solution of parametric uncoupled models defined in evolving domains
Authors: Ammar Amine , Cueto Elías , Chinesta Francisco 
Published: October 2015

SUMMARYThis work addresses the recurrent issue related to the existence of reduced bases related to the solution of parametric models defined in evolving domains. In this first part of the work, we address the case of decoupled kinematics, that is, models whose solution does not affect the domain in which they are defined. The chosen framework considers an updated Lagrangian description of the kinematics, solved by using natural neighbor Galerkin methods within a nonincremental space–time framework that can be generalized for addressing parametric models. Examples showing the performance and potentialities of the proposed methodology are included.Copyright © 2012 John Wiley & Sons, Ltd.
Symptoms and Symptom Clusters Identified by Adolescents and Young Adults With Cancer Using a Symptom Heuristics App
Authors: Ameringer Suzanne , Erickson Jeanne M. , Macpherson Catherine Fiona , Stegenga Kristin , Linder Lauri A. 
Published: October 2015

AbstractAdolescents and young adults (AYAs) with cancer experience multiple distressing symptoms during treatment. Because the typical approach to symptom assessment does not easily reflect the symptom experience of individuals, alternative approaches to enhancing communication between the patient and provider are needed. We developed an iPad‐based application that uses a heuristic approach to explore AYAs' cancer symptom experiences. In this mixed‐methods descriptive study, 72 AYAs (13–29 years old) with cancer receiving myelosuppressive chemotherapy used the Computerized Symptom Capture Tool (C‐SCAT) to create images of the symptoms and symptom clusters they experienced from a list of 30 symptoms. They answered open‐ended questions within the C‐SCAT about the causes of their symptoms and symptom clusters. The images generated through the C‐SCAT and accompanying free‐text data were analyzed using descriptive, content, and visual analyses. Most participants (n = 70) reported multiple symptoms (M = 8.14). The most frequently reported symptoms were nausea (65.3%), feeling drowsy (55.6%), lack of appetite (55.6%), and lack of energy (55.6%). Forty‐six grouped their symptoms into one or more clusters. The most common symptom cluster was nausea/eating problems/appetite problems. Nausea was most frequently named as the priority symptom in a cluster and as a cause of other symptoms. Although common threads were present in the symptoms experienced by AYAs, the graphic images revealed unique perspectives and a range of complexity of symptom relationships, clusters, and causes. Results highlight the need for a tailored approach to symptom management based on how the AYA with cancer perceives his or her symptom experience. © 2015 Wiley Periodicals, Inc.
Gold‐Catalyzed Intramolecular Cyclizations of Cyclopropenes with Propargylic Esters
Authors: Zhu Peng‐Long , Tang Xiang‐Ying , Shi Min 
Published: October 2015

AbstractHomogeneous gold catalysts are interesting as they can act as potent carbophilic Lewis acids to activate the π bonds of alkynes, allenes, and alkenes. Many impressive applications for the formation of C−C or C−heteroatom bonds have been found due to the excellent functional group compatibility of these catalysts and the air and moisture tolerance of their reactions. Here, we have developed gold‐catalyzed novel intramolecular cycloisomerizations of nitrogen or oxygen‐tethered cyclopropenes with propargylic esters. The reaction proceeded through different pathways according to different substituent styles, affording 5‐azaspiro[2.5]oct‐7‐enes and bicyclo[4.1.0]heptanes.