bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hereditary paraganglioma‐pheochromocytoma syndromes associated with SDHD and RET mutations
Authors: Choi Joseph Do Woong , Tucker Katherine M. , Lee Tack Tsiew , Chong Guan C. 
Published: December 2013

AbstractBackgroundHereditary paraganglioma‐pheochromocytoma syndromes (PGL/PCC) are rare tumors arising from neuroendocrine cells.Methods and ResultsThe proband, a 59‐year‐old white man and his 42‐year‐old elder son had a medical history of bilateral carotid body PGL and both presented for treatment of abdominal PGLs. His 36‐year‐old daughter had excision of recurrent malignant carotid body PGL and vertebral metastasis. His 33‐year‐old youngest son presented for excision of a unilateral carotid body PGL. All 4 members had succinate dehydrogenase subunit D (SDHD) mutations, whereas the proband and youngest son also had concurrent rearranged during transfection (RET) mutation.ConclusionThis is the first report of PGL/PCC with SDHD and RET mutations. The role of the RET gene as a modifier remains speculative. Additionally, the family pedigree suggests maternal inheritance of disease from the probands' paternal grandmother. Clinicians should refer PGL/PCC families for mutation analysis as well as being alert to changes in the classification of mutations. © 2014 Wiley Periodicals, Inc. Head Neck, 36: E99–E102, 2014
Facilitation of pain sensitization in knee osteoarthritis and persistent post‐operative pain: A cross‐sectional study
Authors: Skou S.T. , Graven‐Nielsen T. , Rasmussen S. , Simonsen O.H. , Laursen M.B. , Arendt‐Nielsen L. 
Published: December 2013

AbstractBackgroundAround 20% of patients with osteoarthritis (OA) have chronic post‐operative pain after total knee arthroplasty (TKA) and often undergo revision surgery with unfavourable pain outcome. This study compared sensitization in pain patients with kneeOAand after revisionTKA(re‐TKA).MethodsMedian pressure pain thresholds (PPTs) assessed from the most affected knee (localized sensitization) were used to subgroup 53 patients withOApain and 20 patients with pain after re‐TKA: group 1:OAand high‐kneePPT; group 2:OAand low‐kneePPT; group 3: re‐TKAand high‐kneePPT; group 4: re‐TKAand low‐kneePPT. Clinical pain intensity was assessed using a visual analogue scale (VAS). BilateralPPTswere measured from the lower leg and forearm (spreading sensitization). Furthermore, the pain intensities evoked by 10 repeated pressure pain stimuli (temporal summation) at the knee and lower leg were assessed on an electronicVAS.ResultsThe mean clinical pain intensity was not significantly different between groups. ThePPTsfrom both lower leg and forearm were significantly lower in group 4 compared to groups 1, 2, and 3 and in groups 2 and 3 compared to group 1 (p < 0.05). Temporal summations from the knee and lower leg were significantly facilitated in groups 3 and 4 compared to groups 1 and 2 (p < 0.05).ConclusionsDespite similar pain intensities, facilitated temporal summation is worse in re‐TKAthan inOAand patients with high local knee hyperalgesia show more prominent spreading sensitization. The study suggests that sensitization should be considered in kneeOAespecially before re‐TKA.
An Examination of Successful Soldier Postdeployment Transition From Combat to Garrison Life
Authors: Fink David S. , Gallaway M. Shayne , Millikan Amy M. 
Published: December 2013

AbstractPrevious studies have shown that combat exposures and deployment‐related stressors have negative implications on soldiers’ postdeployment health and well‐being. The current study aimed to examine the individual and combined effects of organizational and social support on the success of soldiers’ postdeployment reintegration. In this study, 2,922 U.S. soldiers were surveyed from a brigade combat team at 90–120 days postdeployment, measuring soldiers’ perceptions of postdeployment transition home, occupational and social support, stigma and barriers associated with accessing behavioral health care, and previous behavioral health care. Logistic regression analysis indicated that soldiers reporting a positive postdeployment transition home (n = 1,776; 61%) was significantly associated with leadership perceptions, adjusted odds ratio (AOR) = 1.19, 95% confidence interval (CI) [1.02, 1.39], unit cohesion, AOR = 1.29, 95% CI [1.09, 1.53], personal support, AOR = 1.37, 95% CI [1.23, 1.52], perceived levels of stigma, AOR = 0.73, 95% CI [0.65, 0.82] barriers to accessing care, AOR = 0.86, 95% CI [0.76, 0.97], and previously accessing behavioral health care, AOR = 0.34, 95% CI [0.28, 0.43]. These findings suggest redeploying soldiers may benefit from programs aimed at improving self‐efficacy and coping through fostering occupational and social support, with special concern taken to reduce stigma and barriers to care across the Army.
A review of lasers and light for the treatment of onychomycosis
Authors: Ortiz Arisa E. , Avram Mathew M. , Wanner Molly A. 
Published: December 2013

Background and ObjectiveOnychomycosis is a common fungal infection that affects many individuals. Systemic therapies are effective, but are limited by their side effects and potential for hepatotoxicity. Topical therapies have less serious side effects, yet provide only limited efficacy due to their inability to penetrate the nail plate. These limitations have led to the investigation of laser and light‐based modalities as alternative treatment options for onychomycosis. This article will provide an overview and critical assessment of the field of laser and other energy‐based treatments for onychomycosis.Study Design/Materials and MethodsA literature search was conducted on laser and light‐based treatments for onychomycosis.ResultsEarly data are promising, however, many of these studies are small or poorly designed.ConclusionFurther evaluation and larger studies are needed to determine the optimal light source, pulse duration, and treatment schedule for long‐term success. Lasers Surg. Med. 46:117–124, 2014. © 2013 Wiley Periodicals, Inc.
Miniaturized Wilkinson power divider with two capacitors
Authors: Wang Xiaolong , Sakagami Iwata , Mase Atsusni 
Published: December 2013

ABSTRACTMiniaturized Wilkinson power divider with two capacitors is presented. One capacitor is shunted to ground at the input port and the other is connected to two output ports. Compared with two previous reports which using capacitors to miniature a transmission line in Wilkinson power divider design, the proposed power divider provides shorter electrical length and wider bandwidth under the same value of characteristic impedance. Experimental results showed good agreement with theoretical simulations. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:301–304, 2014
Design of compact ultrawideband bandpass filter with notch band
Authors: Sung Youngje 
Published: December 2013

ABSTRACTA novel ultrawideband (UWB) bandpass filter (BPF) with triple notched bands is presented. By embedding a modified H‐shaped resonator with an additional outer line into a conventional UWB BPF, band‐rejected filtering properties around the 3.5‐GHz WiMAX band, the 5.2/5.8‐GHz WLAN band, and the X‐band satellite communication band are generated. The notched frequencies can be adjusted according to specification by altering the modified H‐shaped resonator. Sharp rejections occur at 3.6, 5.3, 7.7, and 7.95 GHz. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:323–326, 2014
Design and analysis of a novel open ended T‐shaped slot loaded compact multifrequency microstrip patch antenna
Authors: Das Sudipta , Karmakar Abshishek , Sarkar Partha P. , Chowdhury Santosh K. 
Published: December 2013

ABSTRACTThis article is aimed at proposing a single layer, single feed, compact microstrip patch antenna for multifrequency operation. An open ended T‐shaped slot is introduced at the right‐side radiating edge of the patch to reduce the size of the antenna and also to obtain multiple resonant frequencies. The measured result shows that the size of the antenna has been reduced by 61% with an increased frequency ratio (the ratio of second or higher resonant frequency to the first resonant frequency).The proposed antenna is designed and fabricated for operating at 3.6, 5.2, 6.1, and 7.3 GHz. Good agreement is achieved between the simulated and measured results. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:316–322, 2014
Very broadband PIFA antenna for mobile communications and ultrawideband services
Authors: Gomez‐Villanueva R. , Linares‐y‐Miranda R. , Tirado‐Mēndez J. A. , Jardon‐Aguilar H. 
Published: December 2013

ABSTRACTThis article describes a very wideband planar inverted‐F antenna antenna that covers the frequencies from 1.73 to 10.25 GHz with S11 < ‐10 dB. This wideband encompasses the operating bands of mobile services such as DCS, PCS, LTE, WiMAX, WiFi, Bluetooth, and the major part of the ultrawideband spectrum. This new antenna has adequate radiation characteristics and dimensions of 4 × 2 × 1 cm3 that are suitable to be integrated in mobile terminals. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:313–316, 2014
Multiband meandered miniaturized patch antenna loaded with split ring resonator and thin wire arrays
Authors: Patel Shobhit K. , Kosta Yogeshwar 
Published: December 2013

ABSTRACTArtificial materials have attracted considerable attention as potential solutions to meet the demands of modern microwave technology for simultaneously achieving component minimization and higher performance in wireless communications, mobile communications, and satellite communication applications. So in this letter, we have investigated a multiband meandered miniaturized patch antenna with the use of split ring resonator (SRR) and thin wire arrays. SRR are promising building blocks for negative permeability metamaterials and thin wire arrays for negative permittivity. By combining SRR arrays and wire arrays together, we observed a transmission band where both permittivity and permeability are simultaneously negative. Simulated results for the S11 and electric field of an antenna are presented. The result shows multibands centered at 1.89, 2.04, 2.13, and 2.31 GHz. Design results are obtained by a high frequency structure simulator which is used for simulating microwave passive components. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:306–310, 2014
Design of a new bandpass filter using S‐CRLH SIRs
Authors: Tang Zongxi , Cao Xin , Wang Fei , Wu Yunqiu , Wei Yao , Zhang Biao 
Published: December 2013

ABSTRACTA new quad‐band bandpass filter using simplified composite right/left handed (S‐CRLH) stepped impedance resonators (SIR) is proposed in this article. The filter uses the zeroth and first‐order resonance of the two S‐CRLH SIRs and achieves insertion loss of 0.93, 0.79, 1.14, 0.64 dB at 5.9, 6.6, 9.3, and 9.7 GHz, respectively. It has the advantages of low in‐band insertion loss, good out‐band rejection, and compact size. Good agreement has been achieved between simulation and measurement results. It has been demonstrated by the results for the first time that the zeroth‐order resonance mode of S‐CRLH transmission lines can also be ultilized in the multipassband (over three passbands, not just mono‐ or dual‐passband) filter application to achieve good performance. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:265–268, 2014
Up to 112 Gbit/s single wavelength channel transmission in the 1310 nm wavelength domain
Authors: Mazurek Paweł , Czyżak Paweł , de Waardt Huug , Turkiewicz Jarosław Piotr 
Published: December 2013

ABSTRACTIn this article, we present up to 112 Gbit/s single wavelength channel on‐off keying transmission in the 1310‐nm wavelength domain utilizing polarization multiplexing over distances 25–38 km of standard single mode fiber. Excellent operation of the system is demonstrated. The proposed solution can be successfully utilized in data communications transmission. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:263–265, 2014
Dual‐stopband filter using metamaterial hexagonal mushroom resonator
Authors: Awasthi Seema , Biswas Animesh , Akhtar Mohammed Jaleel 
Published: December 2013

ABSTRACTIn this article, dual‐stopband filter based on metamaterial hexagonal mushroom resonator is presented first time. Here, hexagonal mushroom resonators are used to synthesize planar microwave filter using the coupling coefficient approach based on frequency transformation. There are different approaches to implement dual‐band filters among which frequency transformation technique is advantageous than other methods in terms of complexity to find the transfer functions. So it is applied here to generate the coupling matrix of direct coupled dual‐stopband filter. For easy tuning, filter has been synthesized in cul‐de‐sac topology that is suitable for band stop filter realization and eliminates the need for diagonal couplings. Finally, a six‐pole direct‐coupled dual‐stopband filter in cul‐de‐sac configuration has been fabricated using hexagonal metamaterial mushroom resonator. Excellent agreement between simulation and experimental result has been achieved. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:326–329, 2014
Optical single sideband modulation using fiber nonlinearity and injection locked technology in radio‐on‐fiber systems
Authors: Tsai W. S. , Chen Y. L. , Lin G. C. 
Published: December 2013

ABSTRACTWe propose a transmission system based on stimulated Brillouin scattering (SBS) effect and injection locked distributed‐feedback (DFB) laser to achieve optical single sideband (OSSB) modulation. These two kinds of technologies fall on frequency band approximately nearby 10.8 GHz to enhance OSSB signal. The first step drives radio frequency signal into modulator and uses SBS effect to enhance right sideband. The second step based on injection locked DFB laser achieves OSSB modulation. After 25‐km single mode fiber transmission, we can observe the sideband power ratio > 15.81 dB and performances for bit error rate analysis with power penalty about 5.2 dB at 10−8. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:274–278, 2014
A compact CPW‐fed circular slot antenna with reconfigurable dual band‐notch characteristics for UWB communication applications
Authors: Li Yingsong , Li Wenxing , Mittra Raj 
Published: December 2013

ABSTRACTA CPW‐fed ultrawideband (UWB) antenna with dual band‐notch characteristic and reconfigurable function is proposed and its performance is verified experimentally. The dual band‐notch function is realized by using a pair of open‐ended T‐shaped stubs (OET‐S), inserted into the circular ring radiating patch, and by using an inverted‐F stub‐loaded rectangular resonator (IFSLRR) etching on the CPW‐fed transmission line. The reconfigurable characteristic is realized by integrating two switches into the proposed OET‐S and the IFSLRR. The proposed antenna is designed, simulated, optimized, and fabricated. The simulated and measured results show that the proposed antenna has a wide impedance bandwidth, omnidirectional patterns, dual band‐notch characteristics, and reconfigurable function, making it suitable for UWB communication applications. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:465–468, 2014
An iterative full‐wave method for designing bandstop frequency selective surfaces on textile substrates
Authors: Cavalcante Gustavo A. , D'Assunção Adaildo G. , D'Assunção Adaildo G. 
Published: December 2013

ABSTRACTThis work presents an investigation of frequency selective surfaces (FSSs), with cross dipole, square loop, and triangular patch elements printed on textile substrates which exhibit some advantages over typical dielectric substrates used in FSS structures, such as high flexibility, low weight, low cost, and ease fabrication. Among these advantages, flexibility is certainly the most important one, allowing the FSS geometry to be used in many microwave circuit applications. Simulated results are obtained using both an implementation of the wave concept iterative procedure and Ansoft Designer commercial software for comparison purpose. Furthermore, textile FSS prototypes are built and measured to validate the simulated results. Good agreement is reported between simulated and measured results. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:383–388, 2014
Elimination of scan blindness of microstrip array by using I‐shaped λ/2 resonator
Authors: Ghosh Chandan Kumar , Parui Susanta Kumar 
Published: December 2013

ABSTRACTA compact I‐shaped λ/2 resonator is introduced in order to reduce the mutual coupling between antenna elements and eliminate the scan blindness in a microstrip array. The proposed λ/2 resonator is inserted between the adjacent E‐shaped microstrip antenna elements separated by 0.45 λ, as a technique to suppress the occurrence of radiation in the horizontal direction. Simulated and measured results show that a reduction in mutual coupling of 35 dB is obtained between elements at the operation frequency of 3.94 GHz of the array. The scan properties of microstrip array with and without resonator have been studied and the result indicates that the scan blindness of the array can be well eliminated because of the effect of the resonator. We have developed experimental models that have proved this concept of scan blindness elimination. Finally, the influence of other antenna parameters at the presence of resonator in the array system has been studied. Prototype antennas of two‐element and four‐element array with and without resonator have been fabricated, measured, and the idea has been verified. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:334–338, 2014
Design of compact broadband phase shifter with constant loss variation
Authors: Lee Han Lim , Moon Seong‐Mo , Lee Moon‐Que , Yu Jong‐Won 
Published: December 2013

ABSTRACTTwo types of compact broadband phase shifter MMICs (monolithic microwave integrated circuits) with constant insertion loss variations are presented. Both phase shifters are reflection‐type phase shifters using a Lange coupler as a 3‐dB coupler and LC resonance terminations. The first type phase shifter uses a single diode with reverse biasing as a varactor and adopts a miniaturized Lange coupler to maximize compactness and to minimize parasitic loss. The second type adopts back‐to‐back connected diodes with reverse biasing as a varactor for wider tunable phase range and parallel resistors for constant insertion loss variation. For both types, MMIC's are fabricated in GaAs 0.15‐μm low noise pHEMT (p‐high electron mobility transition) process and required indcutances are implemented by microstrip lines. The implemented MMIC phase shifter of the first type shows the measured relative phase shift range of 80° and measured insertion loss of 2.1 ± 0.2 dB at 20 GHz. The measured relative phase shift range of 72 ± 9° and the measured insertion loss variation of ±0.2 dB are obtained from 15 to 25 GHz. Similarly, the second type phase shifter shows the measured relative phase shift range of 104° and measured insertion loss of 2.4 ± 0.1 dB at 21 GHz. Also, the broadband characteristic of the second type is verified by the measured relative phase shift range of 96 ± 8° with the constant insertion loss variation of ±0.2 dB from 17 to 25 GHz. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:394–400, 2014
Ultrawideband slotted semicircular patch antenna
Authors: Telsang Trupti M. , Kakade A. B. 
Published: December 2013

ABSTRACTA compact ultrawideband microstrip patch antenna fed by a coplanar waveguide (CPW) and a microstrip line is presented in this article. The performance between these two feeds on the return loss bandwidth is compared. The radiation pattern stability of the antenna is also investigated. The measured impedance bandwidth of CPW fed and microstrip line fed patch antennas is from 3 to 18 GHz and 2 to 13 GHz (146.67%), respectively. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:362–369, 2014
15% bandwidth 7 GHz GaN‐MMIC Doherty amplifier with enhanced auxiliary chain
Authors: Piazzon Luca , Colantonio Paolo , Giannini Franco , Giofré Rocco 
Published: December 2013

ABSTRACTThis contribution presents the development and characterization of a GaN Doherty power amplifier for backhaul microwave links in the 6.35–7.35 GHz frequency range. To minimize the AM/AM distortion, a driver stage is integrated in the auxiliary branch. Such feature also allows to obtain a higher overall gain than the standard approach. Moreover, to enlarge the bandwidth a coupled lines directional coupler is adopted at the input to split the power to the two branches. Experimental characterization showed 10.5 dB Gain, 38.1 dBm saturated output power, 42% efficiency at 7 dB output back‐off, and 15% bandwidth at 1 dB gain ripple. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:502–504, 2014
Bandwidth improvement of reflectarrays using single‐layered double concentric circular ring elements on a subwavelength grid
Authors: Guo Lu , Tan Peng‐Khiang , Chio Tan‐Huat 
Published: December 2013

ABSTRACTThis article proposes the use of double concentric circular ring elements arranged in a subwavelength grid on a single layer of substrate, in an effort to increase the bandwidth of reflectarrays. Compared to the traditional λ/2 grid arrangements, radiating elements arranged in subwavelength grids achieves a more similar behavior over wider frequency bands when radiating elements' parameters are varied; albeit with a smaller reflected phase range. Furthermore, in contrast to conventional subwavelength single‐patch designs that have only one variable parameter of the phasing element, the double concentric circular ring elements also allow additional degrees‐of‐freedom to improve the bandwidth. Based on the concentric ring element, two offset‐fed 0.43 × 0.43 m2 reflectarrays, one with λ/2 grid and another with λ/3 grid, centered at 10 GHz are designed and developed. The measured results show that the 2‐dB gain bandwidth of the one with λ/2 grid spacing is 13.6%, whereas the one with λ/3 grid spacing is 24.4%. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:418–421, 2014
A compact substrate integrated coaxial line bandpass filter with extended rejection bandwidth
Authors: Zhang Yan , Song Zhe 
Published: December 2013

ABSTRACTIn this article, a compact bandpass filter is proposed using substrate integrated coaxial line technology. An extended rejection bandwidth performance is achieved by introducing partially coupled λ/4‐stepped impedance resonators. Based on the multilayer PCB process, a prototype has been fabricated in a 5.8 × 20 × 1.13 mm3 planar module, which is about 0.045 λ0 × 0.16 λ0 × 0.009 λ0. Measurements confirm that the proposed filter centered at 2.35 GHz is realized with a very low insertion loss of 0.96 dB, and a 27‐dB rejection bandwidth up to 5.82f0. The filter features compact size, low crosstalk, low loss, and high density integration ability. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:415–418, 2014
Electromagnetic bandgap resonators synthesized using ceramic injection molding
Authors: Henderson Rashaunda , Tang Zhizhong , Liu Shaojun , Petras Michael , Aberle James P. , Newman Nathan 
Published: December 2013

AbstractA temperature‐compensated high‐performance BaZn1/3Ta2/3O3 microwave substrate has been inductively loaded with metallic posts to realize an electromagnetic bandgap device with a 5‐GHz bandgap. Capacitive gaps inserted in the device create resonances in the bandgap that are 1/20 the size of standard distributed designs. Simulation and measurement of the bandgap structures agree to 20 GHz. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:371–375, 2014
Vivaldi antenna with printed lens in aperture
Authors: Avdushin A. S. , Ashikhmin A. V. , Negrobov V. V. , Pasternak Yu G. , Fedorov S. M. 
Published: December 2013

ABSTRACTIn article was researched, the possibility of improving the characteristics of Vivaldi antenna by use of printed lens located in aperture. It is shown that use of lens leads to increase in gain and reduce level of side lobes. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:369–371, 2014