bluuebunny/crossref_metadata_2025_split huggingface dataset:
Novel composite nanoparticles based on glycidyl methacrylate‐derivatized dextrans and gelatin as new bone morphogenetic protein carrier
Authors: Chen Fa‐Ming , Zhao Yi‐Min , Zhang Rong , Jin Fang , Wu Zhi‐Fen , Jin Yan 
Published: November 2007

AbstractThis article has been retracted because the authors and editors of the Journal of Biomedical Materials Research, Part A have agreed there is overlap with another article by the same group in the Journal of Controlled Release, 2006; 114(2):209–222.
Decision process support for participatory democracy
Authors: Danielson Mats , Ekenberg Love , Ekengren Anders , Hökby Torsten , Lidén Jan 
Published: November 2007

AbstractThis paper presents a project and case study integrating decision methods into democratic processes. The case discussed is a set of three complicated decisions in a municipality in Sweden. The decisions had been postponed on several occasions prior to bringing in the method described in the paper. The method employed consists of two main parts. The interaction part contains the communication channels directed to the stakeholders. The decision‐process part consists of a three‐layered working process model. As a part of the method, the project was highly visible on the web. Citizens were encouraged to submit material to the project. All intermediate results of the process were continuously published, enhancing transparency. For each decision, the analysis consisted of comparing all alternatives, taking the respective criteria into account as weighted or ranked by the participants. A method for recording compromises analytically was also used. The purpose was not to replace the political process but to support it in a structured way. Copyright © 2007 John Wiley & Sons, Ltd.
A survey on stochastic multicriteria acceptability analysis methods
Authors: Tervonen Tommi , Figueira José Rui 
Published: November 2007

AbstractStochastic multicriteria acceptability analysis (SMAA) comprises a family of multiple criteria decision‐aiding (MCDA) methods for problems including incomplete, imprecise, and uncertain information. Methods of the family allow solving MCDA problems of various types. Even though the methods have been applied in the past in various real‐life decision‐making situations, the structure of a unified SMAA framework has not been studied. In this paper we describe the methods of the family and define a unified SMAA framework. We also point out the key points in the methodology for future research. Copyright © 2007 John Wiley & Sons, Ltd.
Internal hybrid antenna for multiband operation in the mobile phone
Authors: Lin Chun‐I , Wong Kin‐Lu 
Published: November 2007

AbstractA new internal hybrid antenna formed by a printed open‐ended slot (monopole slot) and a T‐shaped metal‐strip monopole (monopole T‐strip) for multiband operation in the mobile phone is presented. The monopole slot is printed near the top edge of the system circuit board of the mobile phone and can generate a quarter‐ wavelength resonant mode at about 900 MHz for GSM850/900 operation. The monopole T‐strip is bent and mounted above the monopole slot and is used to excite a quarter‐wavelength resonant mode at about 1900 MHz to cover DCS/PCS operation. The monopole slot and monopole T‐strip are integrated to occupy a compact volume and can be fed using a simple 50 Ω microstrip line printed on the system circuit board. Obtained results indicate that it is promising to integrate two different types of antennas into an internal hybrid antenna for multiband operation in the mobile phone, and good performances of the hybrid antenna over the operating band can be achieved. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 38–42, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22980
Hexa‐band internal printed slot antenna for mobile phone application
Authors: Wu Chih‐Hsien , Wong Kin‐Lu 
Published: November 2007

AbstractA promising internal printed slot antenna for hexa‐band operation in the mobile phone is presented. The antenna comprises a C‐shaped slot and an open‐ended monopole slot, and both are integrated into a compact configuration to occupy a small area of 21 × 45 mm2 in the top portion of the system circuit board. The integrated C‐shaped slot and monopole slot are fed in series using a 50‐Ω microstrip feedline. The antenna can provide two wide operating bands centered at about 900 and 2200 MHz to cover the GSM850/900/DCS/PCS/UMTS mobile communication and the 2.4‐GHz WLAN operation. Good radiation performances of the proposed antenna over the operating bands are also obtained. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 35–38, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22981
Polarization‐dependent gain and state of polarization effects on linewidth of semiconductor fiber ring lasers
Authors: Awad Hazem , Atieh Ahmad , Hall Trevor J. 
Published: November 2007

AbstractLinewidth measurements of a tuneable, high power, narrow linewidth semiconductor fiber ring laser are presented. The laser had a typical output power of 9.72 dBm with a corresponding 170 kHz FWHM and 311 kHz 20‐dB linewidth. We demonstrate experimentally the dependence of laser's linewidth on SOP of the lasing light and polarization‐dependent gain of semiconductor gain medium. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 31–34, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22984
Characterization of parasitics from scattering parameters of laser diode
Authors: Zhang Shangjian , Zhu Ninghua , Liu Yong , Liu Yongzhi 
Published: November 2007

AbstractA novel method for characterizing the parasitics of parasitic network is proposed based on the relations between the scattering parameters of a semiconductor laser chip and laser diode. Experiments are designed and performed using our method. The analysis results are in good agreement with the measurements. Furthermore, how the parasitics change with the parasitic element values are investigated. The method only needs reflection coefficient of laser diode to be measured, which is simple because of the developed electrical‐domain measurement techniques. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1–4, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22987
An angular offset launching technique for bandwidth enhancement in multimode fiber links
Authors: Oh C. W. , Moon S. , Veetil Suhas P. , Kim D. Y. 
Published: November 2007

AbstractWe propose an angular offset technique for launching optical signals into multimode fibers (MMFs) used in short distance optical fiber links. The signal is launched onto the angled facet of an MMF. The presented method shows better bandwidth enhancement in comparison with the conventional lateral offset launching method with a little power penalty. This method is simple and can be easily adopted in transmitters for high‐speed MMF links. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 165–168, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22988
Closed‐form physical optics expressions for the radar cross section of perfectly conducting plane angular sectors
Authors: Vallecchi Andrea 
Published: November 2007

AbstractClosed‐form expressions for the physical optics (PO) field scattered in the far zone by perfectly electrically conducting (PEC) plane angular sectors with a conical‐section boundary are derived in terms of incomplete cylindrical functions (ICFs). The developed representations are very efficient from a computational point of view and constitute a useful tool to analytically predict the radar cross section (RCS) of metal plates with both convex and concave curved edges. The correctness of the proposed scattered field formulas is demonstrated through comparisons with the results obtained by an accurate completely numerical PO approach. A sample analysis of the scattering from a more elaborate geometry, which can be seen as a juxtaposition of angular sectors, is also presented. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 160–165, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22989
Applications of resonant‐type metamaterial transmission lines to the design of enhanced bandwidth components with compact dimensions
Authors: Sisó G. , Gil M. , Bonache J. , Martín F. 
Published: November 2007

AbstractIn this article, it is demonstrated that metamaterial transmission lines implemented by means of complementary split rings resonators are useful for the design of planar microwave components with small dimensions and broad operational bandwidths. These characteristics are achieved thanks to the small electrical size of complementary split rings resonators and to the controllability of the dispersion diagram in such artificial lines. The technique is illustrated by means of the design of a rat‐race hybrid coupler. The performance and size of this metamaterial‐based component is compared with those characteristics and dimensions of the classical (distributed) implementation. It is clearly demonstrated that by replacing the conventional transmission lines in the design with metamaterial transmission lines conveniently engineered, the functionality of the device is preserved over broader bandwidths and, additionally, significant size reduction is achieved. These characteristics and the absence of lumped elements in the design are of interest for applications in which cost and compatibility with fully planar technology are fundamental aspects. The most relevant contribution of the article is the demonstration of the compatibility between the resonant artificial lines and the design of broad band and high performance microwave components. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 127–134, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22990
An over 40 channel multi‐wavelength laser source
Authors: Lu Z.G. , Liu J.R. , Zhang X.P. 
Published: November 2007

AbstractWe have demonstrated an over 40‐channel multi‐wavelength laser comb source with the 50‐GHz equal frequency spacing between the adjacent channels over the C‐band wavelength range. The output spectra could be described by using the simplified stimulated four‐wave nonlinear coupled equations taking into account the third‐order nonlinear optical interaction in the single‐mode dispersion‐shifted fibers. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 92–94, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22993
Radiation properties of an omnidirectional planar microstrip antenna
Authors: Bancroft Randy 
Published: November 2007

AbstractThe pattern and directivity of an ideal omnidirectional antenna, collinear coaxial, and omnidirectiontal microstrip antenna (OMA) are compared. The radiation of an OMA originates from the arraying of two radiating edges along each element. The width of the (OMA) elements determines omni‐plane pattern variation. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 55–58, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22995
Comparison of dual‐band printed dipoles for WLAN mobile communication devices
Authors: Nepa P. , Manara G. , Mugnaini S. , Tribellini G. , Cioci S. , Albasini G. , Sacchi E. 
Published: November 2007

AbstractA research activity is described in this article, which is devoted to the design and characterization of dual‐band printed dipoles working in the wireless local area network (WLAN) frequency bands at 2.415–2.485 GHz and 5.15–5.35 GHz. In particular, four different prototypes have been designed and compared to check the effectiveness of the design procedure through comparisons between simulations and measurements. Attention is focused on the performance of the different printed dipoles for their application in WLAN mobile terminals. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 81–87, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23000
Microstrip‐CPW bandpass filter for antenna application
Authors: Balalem Atallah , Machac Jan , Omar Abbas 
Published: November 2007

AbstractThis article presents a quasi‐lumped bandpass filter with CPW‐microstrip ports. The structure serves as CPW‐microstrip transmission in addition to its filtering function. The filter was integrated with a microstrip patch antenna. To enable the filter design, the characteristic impedance of the slotted microstrip line and the coupling strength of microstrip to microstrip, CPW to CPW and microstrip to CPW transitions were calculated. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 51–55, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23001
Electromagnetically coupled notch filters and effect of resonator geometries
Authors: Harikrishna J. V. S. , Karekar R. N. , Aiyer R. C. 
Published: November 2007

AbstractElectromagnetically coupled notch filters is a relatively recent innovation. Resonators with three ring geometries (square, triangular, and circular) and L (half wave) are fabricated (all 2.4 GHz) on TMM4 (εr = 4.5, h = 0.762 mm) substrates (without ground plane) and coupled electromagnetically to a 50‐Ω microstrip feed line (on separate TMM4 substrate with ground plane) under it. The comparisons show that square is found to give best notch effect (−37.2 dB) followed by triangular, L, and circular. These notch filters not only offer improved matching performance over their in‐plane coupled counterparts but also provide other flexibilities like easy resonator replacement, multi frequency operation. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 48–51, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23002
A 3.5 GHz low‐power and phase noise differential CMOS VCO
Authors: Jang Sheng‐Lyang , Wu Y.‐J. , Lee Chien‐Feng 
Published: November 2007

AbstractA novel low‐power differential Colpitts voltage‐controlled oscillator (VCO) is proposed and implemented in a 0.18‐μm CMOS 1P6M process. The proposed circuit topology consists of two single‐ended Colpitts LC‐tank VCOs, and the differential VCO is obtained by using a cross‐coupled nMOS pair. At the supply voltage of 1.8 V, the output phase noise of the VCO is −120.56 dBc/Hz at 1 MHz offset frequency from the carrier frequency of 3.64 GHz, and the figure of merit is −185.9 dBc/Hz. Total power consumption is 3.8 mW. Tuning range is about 487 MHz, from 3.64 to 3.15 GHz, while the control voltage was tuned from 0 to 1.8 V. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 153–156, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23003
Multipreconditioned GMRES method for electromagnetic wave scattering problems
Authors: Rui P. L. , Yong H. , Chen R. S. 
Published: November 2007

AbstractA new multipreconditioned generalized minimal residual method (GMRES) combined with the multilevel fast multipole method (MLFMM) is proposed for efficiently solving large dense complex linear systems that arise in electromagnetic wave scattering problems. The MLFMM is used to accelerate the matrix‐vector product operations, and the multipreconditioning technique is employed to speed up the convergence rate of the GMRES iterations. Unlike traditional preconditioning techniques, which usually work alone, the multipreconditioned GMRES algorithm has the capability to combine different preconditioning techniques all together. Numerical results show that the convergence rate of the GMRES method can be significantly improved by automatically taking advantages of all available preconditioners. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 150–152, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23004
Hyper‐wide band TEM horn array design for multi band ground‐penetrating impulse radar
Authors: Turk Ahmet Serdar , Nazli Hakkı 
Published: November 2007

AbstractThe array configuration of the partially dielectric‐loaded TEM (PDTEM) horn structure that can maintain very broadband antenna characteristics over a bandwidth ratio greater than 50:1 is proposed to obtain an efficient impulse signal radiation for ultra‐wide band radar and communication systems. It is shown that proper array combinations of TEM horn antennas can remarkably improve the impulse radiation performance yielding high gain and low input reflection levels over the hyper‐wide operational band. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 76–81, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23007
Compact circular polarized patch antenna with harmonic rejection
Authors: Yo Tzong‐Chee , Lee Chien‐Ming , Luo Ching‐Hsing 
Published: November 2007

AbstractDesign of circularly polarized antenna using circular patch with single feed is proposed. The circular polarization (CP) property with second harmonic rejection can be achieved by embedding two circular slots in the patch resonator. By changing the size and position of the slots, two orthogonal modes with equal amplitude and 90° out of phase are simultaneously excited. In the meanwhile, the embedded slots blocking the second harmonic signal is especially suitable for the circuits with nonlinear elements, such as rectify antenna (rectenna). Furthermore, the patch is simple and compact with 12% of the antenna area reduction. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 45–48, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23009
Design of the tree‐shaped UWB antenna using fractal concept
Authors: Park Jong K. , An Hee S. , Lee Jung N. 
Published: November 2007

AbstractIn this article, we have proposed a novel tree‐shaped ultra‐wideband antenna for UWB applications. We have used the partial ground plane technique and the fractal concept to achieve an ultra‐wideband impedance matching. It is found that as the number of iteration increases, the lower‐edge of the impedance bandwidth is moved to the low frequency and the level of the impedance matching over the operating frequency band (3.1–4.8 GHz) is improved. Prototypes of the proposed antennas have been successfully implemented and good radiation characteristics in the operating frequency bands have been achieved. The effect of the angle between upper and lower trapezoids on the return loss was also studied. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 144–150, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23010
Improved circuit model for coplanar‐waveguide to microstrip‐line transition on silicon substrate
Authors: Hua Qi , Yin Wen‐Yan , Zhou Liang , Mao Jun‐Fa , Kang Kai , Zhu Lei 
Published: November 2007

AbstractAn improved equivalent circuit model is proposed to accurately characterize a metal via transition, between a finite ground coplanar waveguide (FGCPW) and a finite ground thin film microstrip line (FGTFML), which was fabricated using standard CMOS technology. This circuit model with only a few lumped‐circuit elements is established and optimized to achieve a wide frequency range of operation, i.e., 1.0–30.0 GHz. A via transition circuit is fabricated and the measured results have evidently validated the predicted results derived from our proposed circuit model. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 141–144, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23011
Ladder‐type filter based on bulk acoustic wave resonators with improved out‐of‐band rejection
Authors: Verdú J. , Menéndez O. , de Paco P. 
Published: November 2007

AbstractFilters based on bulk acoustic wave (BAW) resonators are called to replace actual surface acoustic wave filters. The transmission response of BAW‐based ladder‐type filters presents a steep rejection near the passband, but a poor out‐of‐band (OoB) rejection. This article describes how modifying the basic configuration of this type of filters, its OoB rejection can be improved. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 103–107, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23015
Long‐period gratings ARC‐induced in B/Ge codoped fibers: Thermal behavior and uniform exposure to UV‐radiation
Authors: Rego Gaspar 
Published: November 2007

AbstractThe thermal behavior of long‐period gratings arc‐induced in B/Ge codoped fibers is presented. We also demonstrated the possibility to erase gratings written in Ge‐doped and B/Ge codoped fibers through uniform exposure to UV‐laser radiation. The gratings spectra were afterward recovered by thermal annealing. Permanent thermally induced refractive index changes were found. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 68–71, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23014
A dual‐band and wideband planar inverted‐F antenna for WLAN applications
Authors: Janapsatya J. , Esselle K. P. , Bird T. S. 
Published: November 2007

AbstractA dual‐band planar inverted‐F antenna (PIFA), presented here, covers both 2.4‐ and 5‐GHz bands used in all IEEE 802.11 WLAN standards. Computed and measured return loss and radiation patterns of the antenna are presented and are in reasonable agreement. Experimental results indicate a very wide 32.5% operational bandwidth in the 5‐GHz band. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 138–141, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23016
General analysis of single‐mode fiber Fabry–Perot cavity with birefringence
Authors: Chen Haiyan 
Published: November 2007

AbstractIn this letter, a general analysis on the output performance of single‐mode fiber Fabry–Perot (SMF F‐P) cavity with birefringence is carried out and demonstrated experimentally. The effect of magnitude of birefringence on the output characteristics of SMF F‐P cavity is discussed. Numerical results are consistent with experiment. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 101–103, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23018
Design of a band‐selective filter for UWB applications and its characteristic when combined with band‐notched antennas
Authors: Chung Kyungho , Choi Jaehoon 
Published: November 2007

AbstractA compact microstrip band‐selective filter for ultra‐wideband (3.1–10.6 GHz) radio system is proposed. The filter combines an optimum pseudo‐bandpass filter and a coupled resonator bandstop filter on both sides of the meandered 50‐Ω microstrip line. Three coupled resonators are modified to have S‐shape to miniaturize the filter. The measured results show that the filter has wide passband of 146.7% (2.1–10.15 GHz) with low insertion loss and the stop‐band of 7.42% (5.29–5.85 GHz) for 3‐dB bandwidth. The measured group delay variation is less than 0.7 ns within the passband except the stop band. Finally, the filter is combined with band‐notched antennas and then received power levels of the antennas with and without the filter are also examined at the notch frequency. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 98–101, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23019