bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design of dielectric immersed tapered slotline antenna for radar‐based microwave breast imaging
Authors: Shenouda Maged H. , Fear Elise C. 
Published: January 2009

AbstractAn ultra‐wideband, dielectric‐immersed antenna has been developed for a breast tumor detection system. The antenna is a tapered slotline that operates in a low permittivity dielectric. The sensor is fed by an ultra‐wideband microstrip‐to‐slotline balun. Simulations of the balun and the tapered profile demonstrate that reflection coefficient bandwidth of each structure spans 2–12 GHz. The antenna and balun are implemented with a photolithography process, and good agreement is obtained between simulated and measured results for the entire structure. To evaluate the suitability of the antenna for the intended application, measurements are performed with a variety of objects placed in a homogeneous background. Detection and location of the objects are explored. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 633–638, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24112
A miniaturized dual‐mode zeroth‐order ring bandpass filter with one left‐handed unit and a capacitive stub
Authors: Wu Lin‐Sheng , Zhou Xi‐Lang , Yin Wen‐Yan , Niu Jia‐Xiao 
Published: January 2009

AbstractA novel miniaturized dual‐mode ring bandpass filter is presented. By using only one resonant‐type left‐handed unit with complementary split ring resonator to combine with a microstrip line, the ring configuration provides two orthogonal zeroth‐order resonance modes and its occupied area can be reduced by 82% when compared with the conventional one. A capacitive stub is also introduced to control the transmission zero frequencies. The spurious suppression characteristics is also improved. The filter performances are demonstrated by our measured results, with good agreement when compared with the simulated ones. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 603–607, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24113
Right‐ and left‐handed transmission line resonators and filters for dual‐band applications
Authors: Kapitanova Polina , Kholodnyak Dmitry , Humbla Stefan , Perrone Ruben , Mueller Jens , Hein Matthias A. , Vendik Irina 
Published: January 2009

AbstractThe combination of right‐handed and left‐handed transmission line sections enables a novel design strategy for miniature dual‐band resonators and filters in the GHz‐range with a wide stopband at higher frequencies. The design procedure is described, and experimental results for five ceramic multilayer samples of two different designs are presented. All measured data agree well with the results of the electromagnetic simulations and display a high reproducibility of the low‐cost technology used for the implementation of the devices. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 629–633, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24117
60‐GHz bandpass filter with ACMRC resonator fabricated using 0.18‐μm CMOS technology
Authors: Liu Chia‐Hsieh , Hsu Cheng‐Ying , Chen Chu‐Yu , Chuang Huey‐Ru 
Published: January 2009

AbstractThis article presents design and implementation of a 60‐GHz millimeter‐ wave on‐chip bandpass filter using a 0.18‐μm standard CMOS process. The asymmetric compact microstrip resonator cell structure is used to design the filter with two transmission zeros. The input and output capacitors using multilayer coupling are added to create the passband. The die size of the chip is 0.85 × 0.64 mm2. The filter has a 3‐dB bandwidth of about 15 GHz at the center frequency of 64 GHz. The measured insertion loss of the center‐frequency is about 3.9 dB and the return loss is better than 10 dB within passband. The designed on‐chip filter is useful for the integrated design of the 60‐GHz CMOS single‐chip RF transceiver. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 597–600, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24119
Analysis of symmetrically notch loaded stacked disk patch antenna for wideband application
Authors: Ansari J. A. , Singh Prabhakar , Dubey Satya Kesh , Khan R. U. , Vishvakarma Babau R. 
Published: January 2009

AbstractIn this article, the analysis of a symmetrically notch loaded stacked circular disk patch antenna is carried out. It is found that the bandwidth of notch loaded disk antenna depends directly on the notch dimensions. Bandwidth of the notch loaded patch is found to be 27.89%. Stacking of the patch with parasitic element further improves the bandwidth to 43.56%. Theoretical results are compared with simulated results using IE3D, which are in close agreement. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 653–659, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24122
Three channels optical transmission based on polarization multiplexing technique
Authors: Perlicki K. 
Published: January 2009

AbstractA method of multiplexing and demultiplexing three polarization optical channels to triple the capacity in the optical fiber links is proposed and experimentally implemented. Presented transmission system allows to receive each polarization channel at any receiver arm by a simple alignment of the polarization analyzer. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 626–627, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24123
Wide‐band CPW‐fed multilayered LTCC antenna
Authors: Shen Yu‐Long , Ooi B. L. , Xu Dao‐Xian , Ma Jian‐feng 
Published: January 2009

AbstractIn this article, a novel wide‐band CPW‐fed antenna is proposed with low temperature co‐fired ceramic (LTCC) technique. Compared with the conventional coplanar antennas, the compact antenna has two different layers embedded in the LTCC substrate. The principal advantage of the design is that the size of the antenna is significantly reduced meanwhile the wide‐band characteristics can be achieved. Experimental result for the return loss of the antenna is presented to validate the design. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 648–650, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24128
An X‐band 185° CMOS phase shifter MMIC for multiple‐antenna systems
Authors: Lin Chien‐San , Hsiao Wen‐Chun , Chang Sheng‐Fuh 
Published: January 2009

AbstractThe design and implementation of an X‐band phase shifter MMIC using the standard 0.18‐μm CMOS process is presented. A transformed doublet varactor load is analyzed and applied to a 3‐dB quadrature coupler to exhibit large phase shift tuning range and low insertion loss with minimal variation. By using the derived design equations, the implemented CMOS reflection‐type phase shifter demonstrates a continuous phase shift tuning range greater than 185°, an average insertion loss of 5.2 dB with ±0.4 dB variation, and return losses better than 13 dB in 9–11 GHz. The total chip size including I/O pads is 0.76 × 0.79 mm2. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 645–648, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24131
Humidity estimation using neural network and optical fiber sensor
Authors: Sreenivasan Kirthi L. , Khijwania Sunil K. , Philip Thomas , Singh Jagdish P. 
Published: January 2009

AbstractAn optical fiber (OF) sensor with enhanced dynamic range and high sensitivity is realized to detect varying range of relative humidity (RH). For precise and independent estimation/prediction of RH from its nonlinear response, feed forward artificial neural network (ANN) model is developed. Preprocessed stable sensor outputs and corresponding commercial sensor outputs were used to train ANN. Results show that ANN has been effective in successfully predicting RH from the response of OF sensor. Overall, neural network approach showed better performance in comparison to alternative calibration method. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 641–645, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24132
Compact dual‐band multilayer antenna element for nonlinear junction detector application
Authors: Wincza Krzysztof , Gruszczynski Slawomir , Borgosz Jan 
Published: January 2009

AbstractA compact dual‐band antenna element for application in a nonlinear junction detector is proposed. To achieve broadband characteristics in two separate frequency ranges a stratified structure is proposed in which two driven and two parasitic patches are properly placed. For transmitting, a circularly polarized antenna is used in which stacked square ring resonators are applied to achieve simultaneously broadband operation and compact size. For receiving, a dual‐polarized antenna is proposed in which a square patch is loaded by a square ring resonator to provide wide band and to allow for integration with the transmitting antenna. Theoretical calculations confirmed by measurement results are presented. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 696–699, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24136
Realization of left handedness through CSRRs and SRRs in microstrip line
Authors: Zhang Qiaoli , Khan Salman Naeem , He Sailing 
Published: January 2009

AbstractA new technique to realize left‐handedness in microstrip transmission line is proposed by periodically loading combination of split‐ring resonators (SRRs) and complementary split‐ring resonators (CSRRs). Because of the negative permeability offered by SRRs and the negative permittivity of the CSRRs in the designed frequency (5 GHz), a pass‐band is achieved. The design is compact in size, low profile and independent of substrate permittivity. It is also 50% smaller comparing with EBG structure. These features are valuable for future microwave devices like couplers, filters, etc. Comparisons between the simulated and measured results are discussed in details. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 757–760, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24141
Bandwidth enhancement and size reduction of an implantable PIFA antenna for biotelemetry devices
Authors: Liu Wen‐Chung , Chen Ssu‐Hung , Wu Chao‐Ming 
Published: January 2009

AbstractBy means of embedding hook‐shaped slots at the edges of the radiating patches for a stacked planar inverted‐F antenna (PIFA), functions of bandwidth enhancement and size reduction can be achieved for suitable use in implantable biotelemetry devices. The designed antenna with overall size of only 8 × 8 × 1.9 mm3 provides a monopole‐like radiation pattern, a radiation efficiency of 0.55%, and a wide −10 dB impedance bandwidth of 122 MHz covering the 402–405 MHz medical‐implant‐communication‐service (MICS) frequency band. Comparing with the reported most compact antennas, the proposed design obtains not only 144% wider bandwidth but also 36% more compact structure size. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 755–757, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24142
A 77‐GHz six‐port FMCW collision avoidance radar sensor with baseband analytical calibration
Authors: Boukari Bouraima , Moldovan Emilia , Cojocaru Razvan I. , Affes Sofiene , Wu Ke , Bosisio Renato G. , Tatu Serioja Ovidiu 
Published: January 2009

AbstractA 77‐GHz six‐port frequency modulated continuous wave collision avoidance radar sensor is proposed. Velocity and range are determined from the slope of the instantaneous phase of radar beat signals. Digital signal processing techniques are developed to overcome DC offset and amplitude imbalance problems. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 720–725, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24144
Compact multiband printed antenna for wireless applications
Authors: Song Yue , Jiao Yong Chang , Zhang Tian Ling , Weng Zi Bin , Zhang Fu Shun 
Published: January 2009

AbstractA compact printed monopole antenna having small dimensions (22 × 9.5 × 1.6 mm3) for the WLAN bands is presented. With the use of a plated‐through via connecting a rectangular patch with a meandered strip on the both sides, the impedance matching in multiband operation covering 2.4, 5.2, and 5.8 GHz bands is obtained. A theoretical and experimental investigation of the antenna is given. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 669–671, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24149
Improving impedance characteristics for small monopole antennas
Authors: Jung Jinwoo , Lee Hyeonjin , Lim Yeongseog 
Published: January 2009

AbstractSmall monopole antennas like meander‐line antennas and normal‐mode helical antennas are used for handsets in personal communication systems. Because the radiation resistance of small monopole antennas is low, the impedance characteristics are a problem. In this article, we analyzed the relation of monopole antennas and their ground planes to current distribution, and we proposed methods to improve the impedance characteristics of small monopole antennas with low radiation resistance. The impedance characteristics of monopole antennas vary according to the feeding point and the width of the ground plane. Our analysis indicates that varying these impedance characteristics can be used to improve the impedance characteristics of small monopole antennas. The printed meander‐line monopole antenna and the stacked helix monopole antenna were used for experimentation. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 836–842, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24151
Design of seven‐pole LPF with high suppression of harmonics using DGS
Authors: Mohamed Hesham A. , Taher H. , Abdallah Esmat A. , EI‐Henawy Hadia S. 
Published: January 2009

AbstractThe LPF is designed with defected ground structure (DGS) and broadened transmission line elements with very low impedance. A seven pole DGS‐LPF for GSM applications is found to gives deeper attenuation than provided by the previous published work. The length of DGS‐LPF is reduced to 41.5% compared with conventional LPF. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 760–763, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24155
Low cost efficient high gain antenna using array of parasitic patches on a superstrate layer
Authors: Gupta R. K. , Mukherjee J. 
Published: January 2009

AbstractThis article proposes a low cost efficient high gain antenna using array of parasitic patches for wireless applications. The antenna structure consists of a microstrip antenna which feeds an array of square parasitic patches fabricated on a low cost FR4 superstrate. The patches on superstrate are suspended in air at λ0/2. The structure with 5 × 5 array of square parasitic patches is designed, fabricated, and tested. The measured voltage standing wave ratio (VSWR) is <2 over 5.725–5.875 GHz frequency band. The antenna with a single square patch provides a gain of 12.6 dB, whereas the antenna with 5 × 5 array of square parasitic patches provides a gain of 18.0 dB with 92% efficiency, SLL of −18.4 dB and front to back lobe ratio of more than 20 dB. The proposed structure can be packaged inside an application platform. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 733–739, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24156
Compact broadband 90° twist based on square waveguide section with two stepped corner ridges
Authors: Rud Leonid , Kulik Dmitriy , Kirilenko Anatoliy 
Published: January 2009

AbstractCompact rectangular waveguide 90° twist is studied. The twist transformer region is a square waveguide section with two stepped corner ridges. The twist can provide the 40‐dB return‐loss level over the rectangular waveguide operating band if the wide and narrow waveguide wall dimensions are in the ratio of 2:1. The twist lengths are less than the rectangular waveguide half‐wavelength at the central frequency of the chosen operating band. The design results are confirmed by the results of real device measurements. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 851–854, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24161
Design of an ultra‐wideband antenna with a novel dual band‐notched structure
Authors: Ma J. , Yin Y.‐Z. , Deng J.‐Y. , Ma Q. 
Published: January 2009

AbstractA novel dual band‐notched monopole ultra‐wideband antenna is proposed, in which the parasitic strip creates one band‐notch at 5.5 GHz and the tuning stub produces another band‐notch at 3.5 GHz. The experimental results show that the proposed antenna, with a compact size of 20 × 31.5 mm2, has a bandwidth of 3.1–10.6 GHz with voltage standing wave ratio (VSWR) less than 2, except the bandwidths of 3.3–3.7 GHz for WIMAX and 5.15–5.825 GHz for WLAN. By changing the lengths of the parasitic strip and the tuning stub, the central frequencies of the dual notched bands can be adjusted easily. In addition, there is a little influence on a band‐notched characteristic when another is changed. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 814–817, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24163
Parabolic edge planar monopole antenna
Authors: Chang Tae‐Soon , Hur Jung 
Published: January 2009

AbstractIn this article, a parabolic edge planar monopole antenna for UWB communication is presented. The antenna has a broadband property, and it is structured through the planar monopole and ground with a parabolic edge. The design resembles a self‐complementary structure that changes the curvature along the edge of the monopole and ground. The return loss is greater than 10 dB in the frequency range of 3.1–10.6 GHz. The radiation pattern is about the same as that of the dipole antenna at all frequencies. The results show a maximum gain of 1.37–6.02 dBi at the E‐plane. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 675–681, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24170
CPW‐fed circularly polarized antenna for 3.5 GHz WiMAX band
Authors: Chang The Nan 
Published: January 2009

AbstractThis article presents a new configuration of the common part of two unusually coupled open loops fed by a coplanar waveguide (CPW). For each open loop, the common part is in cooperation with one extended ground line of the CPW. The two loops are coupled to yield a wideband circularly polarized antenna for 3.5 GHz WiMAX band. Gain is enhanced through use of an outside ring. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 849–851, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24172
Multiband internal monopole antenna for mobile phones
Authors: Bhatti Rashid Ahmad , Im Yun‐Taek , Anh Nguyen Ngoc , Park Seong‐Ook 
Published: January 2009

AbstractA low‐profile internal monopole antenna has been proposed for multistandard mobile phones. The proposed antenna operates at GSM (880–960 MHz), DCS (1710–1880 MHz), PCS (1850–1990 MHz), UMTS (1920–2170 MHz), WiBro (2300–2390 MHz), Bluetooth (2.42–2.48 GHz), S‐DMB (2.630–2.655 GHz), and WLAN (5.1–5.37, 5.75–5.9 GHz) frequency bands. Multiple resonators have been connected in parallel in a compact configuration to realize a miniaturized internal antenna for modern multistandard handsets. The proposed monopole antenna has been designed within a volume of 0.43 cm3 (20 mm × 14 mm × 1.5 mm) that makes it suitable for ultra‐thin mobile terminals. Two prototype antennas have been fabricated and characterized for return losses and radiation performances which are quite reasonable at all the targeted frequency bands. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 739–742, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24178
Printed ultra‐wideband elliptical antenna with a frequency‐band notch function
Authors: Alshehri Abdallah A. , Sebak A. R. , Denidni T. A. 
Published: January 2009

AbstractTwo printed ultra‐wideband (UWB) elliptical antennas are proposed. The first antenna is a printed elliptical antenna with notch cut fed by a microstrip line. It is designed and fabricated for UWB applications under the band (3.1–10.6 GHz). To obtain sufficient matching bandwidth, a partial ground plane, feed gap, and notch cut are used. The antenna is then modified to obtain frequency band notch function of 5.2/5.8 GHz by inserting a U‐shaped slot beneath the notch cut in the elliptical patch. A parametric study is carried out to optimize the proposed structures. The measured bandwidth for the designed antenna without U‐shaped slot is 8.35 GHz. For the antenna with U‐shaped slot, the measured bandwidth is from 3.08 to 11.00 GHz with band rejection from 4.70 to 5.84 GHz. Good radiation patterns and antenna gains, except in the notched frequency band, have also been obtained. Details of the proposed antenna designs and the measured results are presented and discussed. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 860–864, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24183
Slot line FED dipole antenna for wide band applications
Authors: Deepu V. , Mridula S. , Sujith R. , Mohanan P. 
Published: January 2009

AbstractA slot line fed planar dipole antenna with a parasitic strip for wide band applications is presented. The presented antenna offers a 2:1 VSWR bandwidth from 1.66 to 2.71 GHz covering the DCS/PCS/UMTS and IEEE 802.11b/g bands with a gain better than 6.5 dBi. The uniplanar design, simple feeding, and high gain make it a versatile antenna for wireless applications. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 826–830, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24184
Mode group diversity multiplexing with couplers/splitters as (DE)multiplexers
Authors: Maksymiuk Lukasz , Siuzdak Jerzy , Stepniak Grzegorz 
Published: January 2009

AbstractA system that uses two‐channel mode group multiplexing in step index MM fiber is described. Mode selective couplers/splitters were used as both multiplexers and demultiplexers. Its hardware realization is also described. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 782–784, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24187
Bandwidth enhancement of planar inverted‐F antenna for implantable biotelemetry
Authors: Lee Chien‐Ming , Yo Tzong‐Chee , Huang Fu‐Jhuan , Luo Ching‐Hsing 
Published: January 2009

AbstractA compact planar inverted‐F antenna (PIFA) consisted of two meandered strips with bandwidth enhancement technique is proposed for implantable biotelemetry in MICS band. The antenna occupies a volume of only 791 mm3 (22.5 mm by 18.5 mm by 1.9 mm) operating at 402 MHz. PIFA with two meandered strips can excite dual‐resonate frequencies that control the resonant frequencies at 380 and 440 MHz, respectively, to obtain the broad bandwidth of 120 MHz (353–473 MHz) at a return loss of 10 dB. To verify the performance of implantable antenna, the test tissue is adopted as implanting environment by grinding the pork of front‐leg. Furthermore, the property of this antenna can remain consistency against the varying and complex human tissue. Thus, this letter provides a miniature, broadband implantable PIFA for biotelemetry of medical devices. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 749–752, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24189