bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dual‐band H‐shaped slot antenna for 2.4 and 5 GHz wireless communication
Authors: Liu Yun , Niu Zhenyi , Wang Xiaojun 
Published: February 2010

AbstractA simple and compact dual‐band H‐shaped slot antenna for wireless local area network applications is proposed.The proposed antenna is composed of an H‐shaped slot on the ground plane with size of 23 mm by 32 mm. The substrate material is foam. The antenna is fed by microstrip at its top. The impedance bandwidth, radiation pattern, and gain of the antenna were simulated. The results show that the antenna just covers the WLAN bands (2.4–2.485, 5.15–5.35, and 5.725–5.825 GHz), with the gain remaining steady. The measurement of impedance bandwidth was carried out with a network analyzer. A good agreement between measurement and simulation can be observed. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:957–959, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25042
Visible light wireless transmission based on optical access network using white light‐emitting diode and electroabsorption transceiver
Authors: Son Yong‐Hwan , An Sung‐Chan , Kim Hyun‐Seung , Won Yong‐Yuk , Han Sang‐Kook 
Published: February 2010

AbstractWe propose the visible light communication (VLC) system based on optical access network using light‐emitting diode (LED) and electroabsorption transceiver (EAT).The EAT based on electroabsorption modulator is used as an optical network unit in order to be connected with VLC link based on white LED and photodiode (PD). The proposed architecture is demonstrated experimentally, and its performance is verified through the experimental investigation of quality factor and eye pattern of 5 Mbps baseband data. The variation of performance is shown depending on both the existence of the ambient light and the distance between the LED array and PD. A total of 5 Mbps downlink and uplink transmission is verified through 23.2‐km single‐mode fiber and wireless channel experimentally. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:790–793, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25045
Design of a dual‐band π‐shaped microstrip patch antenna with a shorting pin for 5.2/5.8 GHz WLAN systems
Authors: Choi Sun‐Ho , Kwak Daehan , Lee Hwa‐Choon , Kwak Kyung‐Sup 
Published: February 2010

AbstractThis article describes the design, fabrication, and measurement of a novel π‐shaped dual‐band antenna with a shorting pin for 5.2/5.8 GHz wireless local area network (WLAN) systems.To obtain sufficient bandwidth when return loss (RL) < −10 dB, a shorting pin is inserted in the patch and a coaxial probe source is used. The measured result of the fabricated antenna provides 211 MHz bandwidth from 5.147 to 5.358 GHz and 114 MHz bandwidth from 5.712 to 5.826 GHz (RL < −10 dB) with the gain ranging from 5.73 to 6.52 dBi. Also, a good radiation pattern is achieved within the WLAN band (5.150–5.350 GHz and 5.725–5.825 GHz) range. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:825–827, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25049
Shorted square‐ring slot antennas with a rectangular slot coupled by a microstrip line for GPS and 3G communication applications
Authors: Tsai Ching‐Long , Deng Sheng‐Ming , Tseng Ching‐Hung , Bor Sheau‐Shong 
Published: February 2010

AbstractShorted square‐ring slot antennas with a rectangular slot are presented for the global positioning system (GPS) and third‐generation communication (3G) operations.The shorted square‐ring slot antenna is used as the basic configuration for circular polarization in the GPS band. Then, an added rectangular slot inside the square‐ring slot will radiate linearly polarized wave in the 3G band. Because the added slot has little influence in the GPS band's characteristics, the design rule is very simple. The experimental impedance and axial‐ratio bandwidths for the GPS band are 19.8 and 4.5%, respectively. Also, the impedance bandwidth and the antenna gain for the 3G band are 14.9% and 2.5 dBi, respectively. The antenna characteristics such as bandwidths and gain satisfy the dual‐band's antenna requirements. Especially, the antenna radiation patterns are very suitable to apply in the GPS and 3G systems. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:855–857, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25051
A compact tri‐band PIFA antenna for WLAN and WiMAX applications
Authors: Zuo Shaoli , Yin Yingzeng , Zhang Zhiya , Wu Weijun 
Published: February 2010

AbstractA tri‐band planar inverted‐F antenna (PIFA) for WLAN and WiMAX applications is proposed.By combining F‐T‐shaped slots in the radiating structure and using a trapezoidal feeding plate, three resonant modes are generated and impedance bandwidth of the antenna is enhanced. The fabricated radiation patch has a compact size of 25 × 11 × 8 mm3 with a rectangular ground plate of 26 × 40 mm2. For S11 less than −10 dB, the antenna operates at 2.45 GHz with a bandwidth of 170 MHz, and at 5.2 GHz with a bandwidth of 750 MHz for WLAN application, and at 5.75 GHz with a bandwidth of 540 MHz for WiMAX application. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:919–922, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25052
Compact coaxial‐line‐fed printed mobile‐unit antenna for GSM850/900/1800/1900/UMTS WWAN operation
Authors: Su Saou‐Wen 
Published: February 2010

AbstractA novel, compact, coaxial‐line‐fed mobile‐unit antenna for wireless wide area network operation in the GSM850/900/1800/1900/UMTS bands is presented.The antenna consists mainly of one slit‐embedded ground plane and two radiating strips, all printed in a coplanar configuration on a small FR4 substrate with the overall dimensions 35 mm × 45 mm, which corresponds to 0.10λ × 0.13λ with respect to free‐space wavelength λ at the central frequency, 859 MHz, of the GSM850 band. In addition to compactness, the antenna is easily fed by minicoaxial cable, which allows it to be flexibly deployed inside wireless communications devices as an internal antenna. Experimental prototypes of the design are constructed, tested, and studied in detail in this article. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:961–966, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25053
A novel key‐shaped CPW‐fed monopole UWB antenna
Authors: Lin Rui‐Jin , Ming Y.E. , Lu Xiao‐Zheng 
Published: February 2010

AbstractA novel key‐shaped CPW‐fed monopole UWB antenna is proposed in this article. A high frequency structure simulator is used to analyze the proposed antenna in the design process. The proposed antenna has an extremely wide frequency band range, the impedance bandwidth of which is measured as 2.87–40 GHz (1:13.9) for return loss <−10 dB. Simulated and measured results are presented for the proposed antenna. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:886–889, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25054
Characterization of uni‐traveling carrier photodiodes for high‐linearity and high‐SNR applications
Authors: Wiberg Andreas O. J. , Vukusic Josip , Sunnerud Henrik , Stake Jan , Andrekson Peter A. 
Published: February 2010

AbstractA typical uni‐traveling carrier photodiode (UTC‐PD) and a commercial PIN‐PD are compared in the context of the analog performance at 10 GHz in a realistic noise environment.The behavior of the carrier‐to‐noise ratio (CNR), the linearity, represented by the third‐order output intercept point (OIP3), and the spurious free dynamic range are studied as a function of photocurrent. We have found that the increment of the CNR is only minor because of excess noise of the amplifier, as an optical amplifier is used to reach high optical power. However, the OIP3 of the UTC‐PD is substantially higher and increases with photocurrent, in contrast to the PIN‐PD. Thus, even though the responsivity is lower, it is beneficial to use a UTC‐PD to have superior dynamic range. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:984–987, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25055
Static capacitance and resonance frequencies of an edge‐fed disk over a grounded dielectric slab
Authors: Faria J. A. Brandão 
Published: February 2010

AbstractA multiconductor transmission‐line modal analysis technique is used to determine the frequency‐dependent input admittance of an edge‐fed disk resting over a grounded dielectric slab, fringing field effects being accounted for. The innovative analysis presented here considers the disk structure as the limit case of a ring device, whose internal radius is made negligibly small. By considering very‐low frequency regimes, a static approximation of the static disk capacitance is obtained and shown to agree with previous literature on the topic. For very‐high frequency regimes where the edge‐fed disk behaves as a resonator device, resonance frequencies are determined and compared against results concerning center‐fed disks; radiation effects are ignored in both cases. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:966–971, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25059
A compact printed monopole antenna for WLAN and WiMAX applications
Authors: Zhang Zhiya , Fu Guang , Zuo Shaoli 
Published: February 2010

AbstractA compact printed monopole antenna for WLAN and WiMAX applications is proposed. By combining symmetrical G‐shaped strips and a coupling‐fed plate, fed by a 50 Ω microstrip transmission line, wide impedance bandwidths covering WLAN/2.4/5.2 and WiMAX/5.75 are achieved. The omnidirectional pattern and good gain over the operating bands have been obtained by the fabricated antenna with a compact size of 20 × 34.5 mm2, which is suitable for wireless communication applications. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:857–861, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25060
Design of a compact, wide stopband microstrip band‐pass filter
Authors: Peng Lin , Ruan Cheng‐li , Ding Chao‐yuan , Yang Mao‐hui 
Published: February 2010

AbstractWe proposed a compact microstrip band‐pass filter with wide stopband in this article.Microstrip gap and interdigital capacitor combine with stub inductors shorted to the ground plane by via were used to take advantage of different aspects of left‐handed behavior to achieve compact size and wide stopband characteristics. The designed filter has a compact structure with overall dimensions of 20 mm by 17.05 mm, a 3‐dB bandwidth of 25.2% at 1.19 GHz, insertion loss of −3 dB, attenuation greater that 60 dB in the lower stopband and greater that 27 dB up to 5.2 times the centre frequency. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:830–833, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25061
Study of a two‐layer dichroic for quasioptical network
Authors: Yu Junsheng , Liu Shaohua , Xu Liang , Su Hansheng , Liu Xiaoming , Wei Qingang , Mai Yuan , Chen Xiaodong , Miao Jungang , Bai Ming 
Published: February 2010

AbstractDichroics are key components in the design of quasioptical networks.However, there are many practical issues in designing and fabricating these components. This article presents the design and uncertainty analysis of a dichroic being operated in a two‐channel multireflector quasioptical network. The dichroic is designed to work as a frequency filter, which transmits at 54 GHz and reflects at 89 GHz. A low insertion loss is achieved both in simulation and in measurement. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:900–904, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25075
A band‐rejection type RF switch based on a dual‐mode microstrip ring resonator
Authors: Lee Wu Seong , Ryu Jae Jong , Moon Yeon Kwan , Lee Ju Gab , Kim Ha Chul , Choi Hyun Chul 
Published: February 2010

AbstractA band‐rejection type RF switch, which has very high off‐state isolation, low on‐state insertion loss, and adjustable bandwidth, is proposed using a dual‐mode ring resonator and two PIN diodes. To enable sharp band stop and dual‐mode transmission, the ring resonator is directly fed using nonorthogonal feeding. Two PIN diodes are mounted in shunt after a quarter‐wavelength transmission line from each feeding point, to turn the switch on and off and to reduce the size of the ring resonator. To estimate the practicable transmission characteristics of the proposed switch in relation to the angle of feeding and the wire‐bonded PIN diodes, a lossy transmission‐line equivalent circuit model is proposed, and even–odd mode analysis is carried out. The calculated frequency response shows good agreement with the measurement. The fabricated switch exhibits off‐state isolation of 43.08 dB, and on‐state insertion loss of 0.74 dB, within the range of 2.298–2.401 GHz. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:947–950, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25080
Wide passband optical interleaver based on double‐ring‐assisted Mach–Zehnder interferometer
Authors: Chang Shih‐Jung 
Published: February 2010

AbstractWe presented an optical microring‐assisted Mach–Zehnder interferometer interleaver. With the microrings‐assisted, the optical interleaver exhibits a near‐square passband shape. The fabricated device behaves as a 1 × 2 100–200 GHz interleaver operating at 1.55 mm region. The insertion loss (fiber‐to‐fiber loss) is 1.72 dB, and the stopband extinction ratio is about 20 dB. Design and simulation results are also discussed for further improvement of its performance. The good performance makes this interleaver very attractive for future optical communication systems. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:954–956, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25089
Dorsal caudal tail and sciatic motor nerve conduction studies in adult mice: Technical aspects and normative data
Authors: Xia Robin H. , Yosef Nejla , Ubogu Eroboghene E. 
Published: February 2010

AbstractMice provide an important tool to investigate human neuromuscular disorders. The variability of electrophysiological techniques limits direct comparison between studies. The purpose of this study was to establish normative motor nerve conduction data in adult mice. The dorsal caudal tail nerve and sciatic nerve motor conduction studies were performed bilaterally on restrained anesthetized adult mice. The means and standard deviations for each electrophysiological parameter were determined in normal mice. Data were compared with inflammatory demyelinating polyneuropathy mice to determine whether these parameters discriminate between normal and abnormal peripheral nerves. Normal adult mice had a distal latency of 0.89 (±0.17) ms and 0.75 (±0.09) ms, distal compound motor unit action potential amplitude of 13.2 (±5.9) mV and 28.1 (±8.3) mV, and conduction velocity of 74.6 (±9.0) m/s and 76.5 (±8.3) m/s, respectively. These data were validated by the finding of statistically significant differences in several electrophysiological parameters that compared normal and polyneuropathy‐affected mice. A standardized method for motor nerve conduction studies and associated normative data in mice should facilitate comparisons of disease severity and response to treatment between studies that use similar models. This would assist in the process of translational therapeutic drug design in neuromuscular disorders. Muscle Nerve, 2010
Urodynamic standardization in a large‐scale, multicenter clinical trial examining the effects of daily tadalafil in men with lower urinary tract symptoms with or without benign prostatic obstruction
Authors: Kraus Stephen R. , Dmochowski Roger , Albo Michael E. , Xu Lei , Klise Suzanne R. , Roehrborn Claus G. 
Published: February 2010

AbstractAimsTo present the methodology, standardization techniques, and results from post hoc test–retest reproducibility analyses for a large, placebo‐controlled, multicenter trial, employing urodynamic studies (UDS) to assess the impact of daily tadalafil on men with lower urinary tract symptoms (LUTS) with or without benign prostatic obstruction (BPO).MethodsUDS implemented International Continence Society (ICS) Good Urodynamic Practice guidelines and standardized urodynamic and LUTS terminology. Further standardization procedures included: equipment calibration; a detailed procedure manual and centralized training; and implementation of a central reader. Measures included: monitoring of invalid studies, comparison of actual versus expected standard deviation (SD) for primary outcome (detrusor pressure at maximum urinary flow rate [pdetQmax]), and test–retest reproducibility of the placebo arm at baseline and endpoint.ResultsTwo hundred men with moderate to severe LUTS (baseline IPSS ≥13) at 20 sites were randomized to receive either tadalafil 20 mg or placebo. All men underwent non‐invasive uroflow and pressure‐flow studies. Numbers of invalid studies at baseline and endpoint were 9.3% and 0.6%, respectively. Variability of pdetQmax was lower than anticipated based on actual versus expected SD of 15 and 30, respectively. Correlation coefficients were very good for pressure‐flow parameters including pdetQmax (r = .83).ConclusionsMulticenter clinical trials using urodynamic outcomes require additional standardized procedures to limit inter‐site variability. By implementing centralized training with a detailed procedure manual and use of a central reader, we were able to limit common difficulties arising in multicenter clinical trials, as well as demonstrate good test–retest reproducibility of pressure flow measures. Neurourol. Urodynam. 29:741–747, 2010. © 2010 Wiley‐Liss, Inc.
Reactions of [ReOX3(PPh3)2] Complexes (X = Cl, Br) with Phenylacetylene and the Structures of the Products
Authors: Oehlke Elisabeth , Schweighöfer Philip V. , Abram Ulrich 
Published: February 2010

AbstractOxorhenium(V) complexes [ReOX3(PPh3)2] (X = Cl, Br) react with phenylacetylene under formation of complexes with ylide‐type ligands. Compounds of the compositions [ReOCl3(PPh3){C(Ph)C(H)(PPh3)}] (1), [ReOBr3(OPPh3){C(Ph)C(H)(PPh3)}] (2), and [ReOBr3(OPPh3){C(H)C(Ph)(PPh3)}] (3) were isolated and characterized by X‐ray diffraction. They contain a ligand, which was formed by a nucleophilic attack of released PPh3 at coordinated phenylacetylene. The structures of the products show that there is no preferable position for this attack. Cleavage of the Re–C bond in 3 and dimerization of the organic ligand resulted in the formation of the [{(PPh3)(H)CC(Ph)}2]2+ cation, which crystallized as its [(ReOBr4)(OReO3)]2– salt.
New Ternary Boride Carbides RE10B9+xC10–x (RE = Gd, Tb; x ≈︁ 0.2): Infinite Boron Carbon Branched Chains
Authors: Babizhetskyy Volodymyr , Hiebl Kurt , Mattausch Hansjürgen , Simon Arndt 
Published: February 2010

AbstractNew ternary rare earth metal boride carbides with compositions close to RE10B9C10 (RE = Gd, Tb) were prepared from the elements by melting around 1800 K followed by annealing in silica tubes at 1270 K for one month. The crystal structure of the terbium compound was solved by single‐crystal X‐ray diffraction. It crystallizes in a new structure type in the monoclinic space group P21/c, a = 7.937(1), b = 23.786(2), c = 11.172(1) Å, β = 133.74(1)°, Z = 4, R1 = 0.045 (wR2 = 0.11) for 5713 reflections with Io > 2σ(Io). In the structure BC2 units and single carbon atoms are attached to a zigzag boron chain forming the unprecedented B18C18 branching unit with a B–B distance of 2.42(2) Å between these units. In addition isolated carbon atoms occupy the centres of elongated octahedra formed by rare earth metal atoms. Disorder in the terbium position together with anomalous displacement ellipsoids for carbon atoms except of those in the BC2 fragments can be rationalized in terms of a slight deviation in stoichiometry, Tb10B9+xC10–x (x ≈︁ 0.2). The terbium compound is ferromagnetic below TC ≈︁ 45 K. Due to the presence of moderately narrow domain walls the magneto‐crystalline energy is small.
Synthesis and Characterization of a Novel Energetic Complex [Cd(DAT)6](NO3)2 (DAT = 1,5‐diamino‐tetrazole) with High Nitrogen Content
Authors: Zhang Jian‐Guo , Li Jing‐Yu , Zang Yan , Shu Yuan‐Jie , Zhang Tong‐Lai , Yang Li , Power Philip P. 
Published: February 2010

AbstractThe novel high nitrogen‐containing energetic complex [Cd(DAT)6](NO3)2 was synthesized by reaction of Cd(NO3)2·6H2O with 1,5‐diamino‐tetrazole (DAT). It was characterized by elemental analysis, FT‐IR spectroscopy and single‐crystal X‐ray diffraction analysis. The central Cd2+ ion is coordinated by six nitrogen atoms from six DAT ligand molecules to form a hexacoordinate distorted octahedral compound. The [Cd(DAT)6](NO3)2 molecules are linked together through two types of hydrogen bonds thus forming a stable three‐dimensional net structure. The thermal decomposition mechanism of [Cd(DAT)6](NO3)2 was investigated by DSC and TG/DTG analyses and FT‐IR spectroscopy. The kinetic parameters of the exothermic process were studied by using Kissinger’s and Ozawa–Doyle’s methods.
A New Chain Polymer via Thermolysis: [Hg(μ‐Br)2(3,5‐Br2py)]∞
Authors: Merkens Carina , Kalf Irmgard , Englert Ulli 
Published: February 2010

AbstractThe new ligand‐deficient chain polymer [Hg(μ‐Br)2(3,5‐Br2py)]∞ has been obtained in form of single crystals by thermolysis of the ligand‐rich [Hg(μ‐Br)2(3,5‐Br2py)2]∞ at 180 °C at ambient pressure. From this reaction, high quality crystals of the product are directly accessible. The title compound features HgII cations in a distorted square‐pyramidal coordination; their metal centers aggregate via edge‐sharing with asymmetric halide bridges to chains in which all apical N donor ligands are oriented to the same side of the [Hg(μ‐Br)2]∞ backbone. The new polymer cannot be prepared by stoichiometric reaction in solution.
« Au commencement était l’œuf d’or.» L’enfant et l’origine du langage: leur étude croisée chez Taine et Max Müller
Authors: Ottavi Dominique 
Published: February 2010

Hippolyte Taine a rédigé, en 1870, au moment où son oeuvre changea d’orientation, une monographie relatant l’observation du développement du langage chez son propre enfant. Ce texte, connu de Darwin, est l’une des premières tentatives d’observer le développement, l’évolution, de l’enfant.
Le but n’en est pas tant de décrire l’enfant pour lui-même que de polémiquer avec le linguiste Max Müller au sujet de l’origine du langage. L’observation de Taine veut montrer expérimentalement que la théorie évolutionniste rend compte de la genèse du langage chez l’individu et dans l’espèce humaine. Mais l’enjeu réel est de nier qu’il existe une rupture entre l’intelligence de l’homme et celle de l’animal. Max Müller s’en tenait à appliquer la théorie de l’évolution au changement des langues. Taine, lui, veut affirmer la continuité du développement psychologique dans la nature: ce ne sont pas les langues qui évoluent mais l’intelligence ellemême.