bluuebunny/crossref_metadata_2025_split huggingface dataset:
A common and functional gene variant in the vascular endothelial growth factor a predicts clinical outcome in early‐stage breast cancer
Authors: Absenger Gudrun , Szkandera Joanna , Stotz Michael , Pichler Martin , Winder Thomas , Langsenlehner Tanja , Langsenlehner Uwe , Samonigg Hellmut , Renner Wilfried , Gerger Armin 
Published: April 2013

AbstractAngiogenesis and cell cycle control play critical roles in breast cancer susceptibility and clinical outcome and are mainly controlled by vascular endothelial growth factor (VEGF) and cyclin‐dependent kinases, respectively. Functional germline polymorphisms in these genes alter the function, thereby causing inter‐individual differences in breast cancer risk and clinical outcome. In this study, we investigated the influence of the functional polymorphisms VEGF‐A rs3025039 C > T and CCND1 rs9344 G > A on risk and clinical outcome in early‐stage breast cancer. DNA of 539 female patients with histologically confirmed early‐stage breast cancer and 804 control subjects was genotyped for these polymorphisms. Genotypes were tested for associations with breast cancer risk and clinical outcome. There was no significant association between the polymorphisms and breast cancer risk. However, the minor allele of VEGF‐A rs3025039 C > T was significantly associated with decreased recurrence‐free survival (HR 1.845; 95% confidence interval [CI] 1.035–3.290; P = 0.038) and remained significant in multivariate analysis (HR 1.880; 95% CI 1.020–3.465; P = 0.043). Patients carrying at least one A‐allele in CCND1 rs9344 G > A showed a trend towards decreased recurrence‐free survival in univariate analysis (HR 2.379; 95% CI 0.841–6.728; P = 0.068). This study provides evidence that the functional VEGF‐A rs3025039 C > T polymorphism influences recurrence‐free survival in early‐stage breast cancer. © 2013 Wiley Periodicals, Inc.
Role of PTEN in basal cell derived lung carcinogenesis
Authors: Malkoski Stephen P. , Cleaver Timothy G. , Thompson Joshua J. , Sutton Whitney P. , Haeger Sarah M. , Rodriguez Karen J. , Lu Shi‐Long , Merrick Daniel , Wang Xiao‐Jing 
Published: April 2013

AbstractLung adenocarcinoma (AdC) and lung squamous cell carcinoma (SCC) are the most common non‐small cell lung cancer (NSCLC) subtypes, however, most genetic mouse models of lung cancer produce predominantly, if not exclusively, AdC. Whether this is secondary to targeting mutations to the distal airway cells or to the use of activating Kras mutations that drive AdC formation is unknown. We previously showed that targeting KrasG12D activation and transforming growth factor β receptor type II (TGFβRII) deletion to airway basal cells via a keratin promoter induced formation of both lung AdC and SCC. In this study we assessed if targeting phosphatase and tensin homologue (PTEN) deletion to airway basal cells could initiate lung tumor formation or increase lung SCC formation. We found that PTEN deletion is capable of initiating both lung AdC and SCC formation when targeted to basal cells and although PTEN deletion is a weaker tumor initiator than KrasG12D with low tumor multiplicity and long latency, tumors initiated by PTEN deletion were larger and displayed more malignant conversion than KrasG12D initiated tumors. That PTEN deletion did not increase lung SCC formation compared to KrasG12D activation, suggests that the initiating genetic event does not dictate tumor histology when genetic alterations are targeted to a specific cell. These studies also confirm that basal cells of the conducting airway are capable of giving rise to multiple NSCLC tumor types. © 2013 Wiley Periodicals, Inc.
A novel variable power divider with continuous power division
Authors: Bulja Senad , Grebennikov Andrei 
Published: April 2013

AbstractIn this article, a novel variable power divider based on varactor diodes is introduced and described in detail.Its main components are 3‐dB couplers, varactor diodes, and lumped elements. The proposed power divider is initially studied using the even‐ and odd‐mode techniques. Then, based on the derived equations and as an experimental verification, the proposed varactor‐based power divider operating at the center frequency of 2.5 GHz is fabricated and its performance is measured. It is shown that the power divider offers a maximum insertion loss of about 1.8 dB with a minimum dynamic range of over 6 dB in the frequency range from 2.3 to 2.7 GHz. The results are discussed. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1684–1686, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27603
Optical generation of millimeter‐wave and sub‐terahertz carrier through frequency 18‐tupling
Authors: Han Seung Heon , Park Chang‐Soo 
Published: April 2013

AbstractWe propose and experimentally demonstrate an optical millimeter‐wave and sub‐terahertz signal generation method based on frequency 18‐tupling using a power amplifier, an optical modulator, and a semiconductor optical amplifier (SOA). The power amplifier is operated in the nonlinear region and generates a third‐order harmonic frequency. Next, frequency doubling by optical carrier suppression using the optical modulator is performed. Four‐wave mixing of the SOA and optical filtering produce two‐tone waves whose frequency spacing corresponds to 18‐tupling of the input RF frequency. The experimental results show that two idlers could be obtained at 1549.98 and 1550.85 nm in the wavelength domain corresponding to the beat frequency of 108 GHz from the 6 GHz RF signal. Because of the bandwidth limitations of our available photodetectors, the phase noise of the beat signal is measured at a lower frequency of 60 GHz for the input of 3.3 GHz and is −74.60 dBc/Hz at an offset of 100 kHz. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1677–1680, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27605
Dual band‐notched annular monopole antenna with tunable structure for UWB application
Authors: Jeng Bo‐Ming , Luo Ching‐Hsing 
Published: April 2013

AbstractA novel annular monopole antenna with a dual‐band rejection characteristic for ultra‐wideband (UWB) applications is proposed.This antenna comprises an annular‐shape radiating element with a tuning stub and a backside elliptical radiating element that is connected to it by a shorting pin, to create dual‐notched bands at 3.2–4.4 GHz and 4.8–5.9 GHz across the UWB frequency band from 2.5 to 14.5 GHz, to filter the WIMAX and WLAN signals. Measurements demonstrate that the proposed antenna provides a very large bandwidth from 2.5 to 14.5 GHz (141%, voltage standing wave ratio 2). A good monopole‐like radiation pattern except the notched bands is obtained. Details of the proposed antenna design and the simulated results are presented and discussed. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1546–1549, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27609
Card‐type slot antenna for UHF RFID tag close to the chest of a human body
Authors: Chiu Chien‐Wen , Ou Chen‐An , Wang Hwang‐Cheng , Chuang Yu‐Chou 
Published: April 2013

AbstractThis article presents a UHF radio frequency identification tag antenna used in proximity to the chest of a human body for student ID card identification.The proposed tag antenna is a rectangular slot‐type patch structure printed on a PVC card. For near‐body applications, stratified square plates with physical parameters are used as a human model. The radiation properties of the slotted tag antenna placed near the model and the absorption effects due to human body are investigated. The research used the HFSS simulator to optimally design the antenna and employed the FEKO simulator to verify the simulated results. The designed tag was constructed for testing the reading range. The measured reading range achieved is around 4.2 m as the tag is put close to the chest. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1626–1631, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27610
Design and fabrication of EBG and CWP antennas using inkjet printing technology
Authors: Kanso Ahmad , Arnaud E. , Chreim Hassan , Monédière Thierry , Thévenot Marc , Beaudrouet Eloi , Dossou‐yovo Christelle , Noguéra Remi 
Published: April 2013

AbstractThis article presents a solution to bypass the cost and flatness problems for low‐cost electronic devices which is the inkjet printing. This process allows the use of flexible substrate materials, such as paper or plastics, suitable for a real‐to‐real process. More precisely, the procedure to design an electromagnetic band gap antenna using frequency selective surfaces and coplanar wire‐patch antenna for 2.5‐GHz applications is detailed. This kind of antenna has been designed before, but the used substrate is expensive and thin. These antennas were fabricated using inkjet printing technology on a flexible, low‐cost paper substrate using a simple, fast, and cheap process compared to the photolithography technology. The design characteristics of the antennas were verified and the experimental measurements were successfully compared to the simulated ones. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1520–1526, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27613
Scattered field FETD modeling of oblique plane wave incidence from a circular PEC cylinder: TMz polarization
Authors: Bavelis Konstantinos , Mias Christos 
Published: April 2013

AbstractOblique TMz polarized plane wave scattering from a perfectly electrically conducting cylinder of circular cross‐section is modeled using a finite‐element time‐domain formulation in terms of the scattered electric field using a modal nonreflecting boundary condition and both nonperiodic and periodic formulations.© 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1516–1520, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27614
Chaotic ultra‐wideband over fiber link based on optical feedback laser diode
Authors: Zhang Mingjiang , Zheng Jianyu , Wang Anbang , Wang Yuncai , Jiang Junfeng , Liu Tiegen 
Published: April 2013

AbstractA chaotic ultra‐wideband (UWB) over fiber link based on optical feedback laser diode which generates the chaotic laser signals is proposed and demonstrated. Flexible generation of up to 1.44 Gb/s on‐off keying chaotic‐UWB signals is successfully achieved. Without utilizing any dispersion compensation module, the signals with bit rate of 1.44 Gb/s were detected using a digital signal processing receiver after 20‐km optical fiber and 0.6‐m wireless channel transmission. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1504–1507, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27615
Compact and weightlight electromagnetic band gap superestrate antenna for C‐band TT&C applications
Authors: Tellechea Amagoia , Iriarte Juan Carlos , Ederra Iñigo , Gonzalo Ramón , Monjas Fernando , Arenas Silvia , Manrique Rodrigo , Montesano Antonio 
Published: April 2013

AbstractThis article proposes the design of a 2 (2 array electromagnetic band gap superstrate antenna capable to fulfill the specific radiofrequency (RF) requirements of a C‐band (3.7 GHz) TT&C telecommunication system from geostationary orbits. Design efforts are focused on overall volume reduction while complying with RF performances over the required frequency bandwidth, trying to provide an advantageous alternative to the bulky horn antennas usually used for TT&C operations in current satellites. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1457–1461, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27616
Frequency‐tunability of a miniaturized waveguide filter loaded with a split‐ring‐resonator
Authors: Park Wook‐Ki , Han Seong‐Tae , Oh Soon‐Soo 
Published: April 2013

AbstractIn this article, we describe a frequency‐tunability procedure for a waveguide single‐pole bandpass filter adopting a split‐ring resonator (SRR). The tuning procedure is, in this article, achieved by inserting a metal or ferrite tuning screw, depending on the desired tuning direction. The screw plays a role in the adjustment of the magnetic field passing through the center of the SRR. The discrepancy between the proposed waveguide filter and the evanescent‐mode filter has been included. The aperture size of the waveguide filter is decreased by about 70% in comparison with conventional waveguides. The wide tuning bandwidths and lower insertion losses obtained by both simulation and measurement confirm the validity of the proposed technique. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1649–1653, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27618
Performance evaluation of an all‐fiber ratiometric wavelength monitor system using edge filters based on sms fiber structures
Authors: Hatta Agus M. , Semenova Y. , Farrell G. 
Published: April 2013

AbstractThis article presents performance evaluation of the use of one or two edge filter(s) based on singlemode‐multimode‐singlemode (SMS) fiber structure on an all‐fiber ratiometric wavelength monitor system.Several aspects of noise, polarization‐dependent loss (PDL), and temperature‐dependent loss (TDL) that can influence the system's performance were investigated. It was demonstrated that the use of two SMS edge filters can improve the system's resolution and wavelength error when compared with the use of one edge filter. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1645–1649, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27619
Design of a multi‐input multi‐output antenna with improved isolation using RF choke for long‐term evolution mobile application
Authors: Ga Deukhyeon , Lee Youngki , Choi Jaehoon 
Published: April 2013

AbstractA multi‐input multi‐output (MIMO) antenna with improved isolation using radio frequency choke (RFC) is proposed.The proposed MIMO antenna consists of two radiating elements and an RFC that is located in between the two radiating elements. To improve the isolation between the two radiating elements of the MIMO antenna, the RF signal is suppressed at the desired frequency band by utilizing an RFC. The isolation is improved by ∼20 dB at the center frequency. The fabricated antenna satisfies the 6 dB return loss in long‐term evolution band 13 from 746 to 787 MHz. The measured average efficiency and gain of the MIMO antenna are about 30.5% and −1.5 dBi, respectively. The measured envelope correlation coefficient is less than 0.4 over the frequency band of interest. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1569–1574, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27623
A low phase noise differential dual‐resonance complementary colpitts VCO
Authors: Jain Sanjeev , Jang Sheng‐Lyang , Juang Miin‐Horng 
Published: April 2013

AbstractA dual‐resonance complementary Colpitts voltage‐controlled oscillator (VCO) is proposed to serve as a dual‐band oscillator operated at 4.3 and 11.7 GHz.The VCO consists of two single‐ended dual‐resonance LC‐tank complementary Colpitts oscillators sharing a common varactor‐switching LC resonator. The proposed VCO has been implemented with the TSMC 0.18 μm 1P6M CMOS technology and the core power consumption is 3.60/3.96 mW at the supply voltage of 1.2 V. The VCO has figure of merit −192.7/−189.4 dBc/Hz at high/low band, respectively. The die area of the dual‐band VCO is 0.822 × 0.628 mm2. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1494–1497, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27626
Microwave bandpass filters with tunable center frequencies and reconfigurable transmission zeros
Authors: Zhou Rongguo , Mandal Iman , Zhang Hualiang 
Published: April 2013

AbstractThis article presents the design of a microwave bandpass filter with tunable center frequencies and reconfigurable transmission zeros. The tuning of the center frequencies is realized by loading varactors at the ends of the λ/2 resonator. The reconfiguration of transmission zero is implemented through varactors in combination with tapped λ/4 stubs. The equivalent circuit models of the tunable filters are provided. The transmission zeros can be set to be at the lower side, the upper side, or both sides of the passband. The design concept is demonstrated by measurement results for both one transmission zero case and two transmission zeros case. The tuning frequency ranges are 680–890 MHz and 680–1020 MHz for one zero case and two zeros case, respectively. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1526–1531, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27628
Isolation improvement of a TRx stacked microstrip patch antenna using double spur‐line band rejection filters
Authors: Batgerel Ariunzaya , Eom Soon‐Young 
Published: April 2013

AbstractIn this article, we present a TRx stacked microstrip patch antenna with improved isolation using double spur‐line band rejection filters (DSL‐BRFs).The typical TRx stacked microstrip patch antenna designed to operate at Ku‐band with downlink frequency band of 12.25–12.75 GHz and uplink frequency band of 14.0–14.5 GHz had inherent isolation of 16 dB within TRx‐band. The isolation performance of the antenna was improved by at least 23.45 dB in Rx‐band and 17.82 dB in Tx‐band after introducing the DSL‐BRFs into Tx‐ and Rx‐feed networks, respectively. Because the DSL‐BRFs are compatible to be embedded in 50‐Ω transmission lines, the TRx antenna with the filters are remained in as same size as the antenna without filters. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1444–1448, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27632
Miniaturization of asymmetric coplanar strip‐fed staircase ultrawideband antenna with reconfigurable notch band
Authors: Li Yingsong , Li Wenxing , Ye Qiubo 
Published: April 2013

AbstractA compact asymmetric coplanar strip‐fed staircase ultrawideband (UWB) antenna with notch band reconfigurable characteristic is proposed and investigated numerically and experimentally.The reconfigurable notch bands are realized by using a spur‐slot and an ideal switch. By controlling the switch at OFF and ON states, the notch bands of the proposed UWB antenna can work at 3.5 and 8.2 GHz, respectively. Numerical and experimental results show that the proposed antenna is capable of working for entire UWB application and providing the reconfigurable notch bands. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1467–1470, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27634
Broadband bandpass filter using parallel‐coupled microstrip line and coupled open stub resonator
Authors: Marimuthu Jayaseelan , Abbosh Amin , Henin Bassem 
Published: April 2013

AbstractA novel broadband bandpass filter with multiple resonant modes based on parallel‐coupled microstrip line is proposed. The required cutoff frequency and out‐of‐band performance are achieved by placing L‐shaped capacitive cross‐coupling open stubs at the middle resonator with appropriate dimensions. A compact broadband bandpass filter of dimensions 18 × 29 mm2 is fabricated and tested for performance confirmation. The proposed filter demonstrates a wide bandwidth (from 3 to 7 GHz), as well as excellent out‐of‐band performance with more than 25‐dB rejection up to more than 12 GHz and sharp upper cutoff frequency due to the proper location of two transmission zeros. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1640–1644, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27637
Capacitive‐coupled resonator‐based bandpass filter with controllable multiple transmission zeros at stopband
Authors: Huang Hui‐Hsiang , Horng Tzyy‐Sheng 
Published: April 2013

AbstractThis letter proposes novel design for a compact LTCC bandpass filter with high rejection over a wide stopband operating in the 3.4–3.6‐GHz worldwide interoperability for microwave access band. The presented bandpass filter has feedback paths for the grounding inductor and the coupled capacitor to provide controllable multiple transmission zeros at 2.4/5‐GHz wireless local area network band, which enhances the desired stopband rejection. The presented design derives simple formulas for synthesizing a bandpass filter to meet the specification requirement in the passband insertion loss and passband return loss as well as the stopband attenuation. The bandpass filter is designed and implemented using LTCC process and has an area of 2.0 × 1.25 mm2. Experiments results are very agreement with the full‐wave simulation results. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1563–1565, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27643
Conical antenna design for the excitation of RTL chamber for cell experiments
Authors: Kim Tae‐Hong , Lee Hyeonjin 
Published: April 2013

AbstractIn this article, a conical antenna fed by coaxial line fed for the excitation of the radial transmission line (RTL) chamber is designed and fabricated. This antenna is analyzed by the finite‐difference time‐domain (FDTD) method and the input impedance is simulated. An RTL chamber was used by the device for in vitro experiments. The designed antenna has advantages, such as ultra‐broadband characteristic and omnidirectional radiation. The bandwidth of fabricated antenna has 630–2590 MHz at voltage standing wave ratio ≤ 2. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1558–1560, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27646
Compact reconfigurable dual frequency microstrip patch antenna for 3G and 4G mobile communication technologies
Authors: Bekali Younes Karfa , Essaaidi Mohamed 
Published: April 2013

AbstractWe propose in this article, a novel compact reconfigurable patch antenna with frequency diversity. This antenna can be tuned by changing the switching mode of two PIN diodes from the ON–ON state to OFF–OFF state to switch it over two different mobile communication technologies, namely 3G and 4G. The antenna has a simple geometry and a small structure, its dimensions are 45 × 38 × 1.5 mm3 and it is printed on an FR4 substrate with a thickness of 1.5 mm. The prototype of this antenna has been fabricated and tested. The measurement results confirmed the simulation predictions in terms of frequency diversity performances. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1622–1626, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27649
A study of wideband pulse shape distortion due to presence of obstacles
Authors: Mei Zicong , Sarkar Tapan K. , Salazar‐Palma Magdalena 
Published: April 2013

AbstractIt is observed that some antennas can transmit a signal conforming to the applied voltage to the far field without any distortion in the time domain, whereas other antennas can receive a signal from the far field which will induce a current on the antenna conforming to the shape of the incident field.With a pair of transmit/receive antennas chosen from this class, one can construct a communication system that will transmit a time‐domain wideband signal and receive it without any distortion of the pulse shape. In this article, we study the effects of the presence of obstacles along the path between the transmit and receive antennas, and we demonstrate that in some cases even when the signal is scattered by the obstacles, the shape of the received scattered pulse may not get distorted. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1618–1622, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27650