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Design of a Microstrip Square-Ring Slot Antenna Filled by an H-Shape Slot for UWB Applications
Saeed Sadat;M. Houshmand;Mehdi Roshandel
PIER , 2007, DOI: 10.2528/PIER07012002
Abstract: A novel microstrip slot antenna for UWB (Ultra Wideband) applications is proposed. A square ring slot antenna is filledb y an H shape slot as a parasitic element. This structure is fed by a single microstrip line with a fork like-tuning stub. Experiments are carriedout to investigate its return loss, its radiation andits time domain behavior, which exhibit good radiation pattern and impedance bandwidth over the entire band of frequency. Time domain consideration also exhibits that this antenna can be used with short pulses. Extended from the proposed antenna, one advanced bandnotched( 5.5-7 GHz) design is also presentedas a desirable feature for UWB applications.
A Monopole Microstrip Antenna with Enhanced Dual Band Rejection for UWB Applications
Pramendra Tilanthe;Pramod Chandra Sharma;T. K. Bandopadhyay
PIER B , 2012, DOI: 10.2528/PIERB11122404
Abstract: In this paper, a compact, planar ultrawideband (UWB) monopole microstrip antenna is proposed which offers dual band notch characteristics with enhanced rejection at frequency bands centered at 3.4 GHz and 5.5 GHz. To realize enhanced band notched characteristics at 3.4 GHz, a pair of filters is incorporated which includes an inverted `L' shaped slot and a twisted `J' shaped slot in the patch element. Another pair of filters comprises of a spur line filter in the feed line and `U' shaped slot in the patch are used to get a strong frequency band rejection centered at 5.5 GHz. Step by step development of the antenna with its analysis in frequency and time domain is presented. The prototype is fabricated and the measured results are presented which are in close similarity to the simulated results.
UWB Printed Slot Antenna with Improved Performance in Time and Frequency Domains
Mithilesh Kumar;Ananjan Basu;Shiban Kishen Koul
PIER C , 2011, DOI: 10.2528/PIERC10090904
Abstract: A microstrip-fed slot antenna is proposed for short-range UWB communication. First, the characteristics of a circular monopole UWB antenna, as a representative of a class of UWB antennas seen in the literature, are examined in time (pulse-shape) and frequency (reflection and transmission coefficients) domains. From these measurements, certain limitations of this class of antennas are brought out, which are not widely recognized. We then demonstrate that with proper optimization the traditional microstrip-fed slot antenna overcomes these defects and is an excellent candidate for UWB communication systems. This claim is justified with measurements in time domain and frequency domain.
Design and Analysis of UWB Microstrip Patch Antenna  [PDF]
Akash Verma , Abhishek Yaduvanshi , Leena Varshney
International Journal of Advanced Computer Research , 2012,
Abstract: In this project we have proposed a CPW-Fed Microstrip patch antenna which is specially designed for UWB applications. Antenna rectangular slot is considered for this design. CPW is the feeding comprising of a side-plane conductor as ground and a center strip carrying the signal. This slot works as a radiator. The bandwidth of proposed antenna resides in the band of UWB specified by FCC for commercial use range from 3.1 GHz to 10.6 GHz. But we have excluded a small range of bandwidth approximately 5.1-6 GHz which is the bandwidth for WLAN signals so that this antenna works fluently in the ultra wide band gap without any interference in WLAN frequencies. First, a conventional rectangular slot antenna is designed and then the rectangular shape is modified by a selfinverted configuration to achieve higher bandwidth. To improve the gain and efficiency, modification has been done. Primary aim throughout this project tenure was to achieve maximum S - parameter frequencies below -10 db in order to get best efficiency. The antenna was designed and simulated using Zeland IE3D for the results of return loss, gain, efficiency, radiation pattern (2D & 3D),current view in the antenna, total field and s - parameter. All the modifications of the design were also done on the same software.
Study of a Miniaturized Quasi-Self-Complementary UWB Antenna in Frequency and Time Domain
L. Guo,X. Chen,C. Parini
Radioengineering , 2009,
Abstract: A compact antenna for UWB communication systems has been realized by employing a quasi-selfcomplementary structure together with a triangular notch on microstrip feed line in this paper. The optimal design of this type of antenna can offer an ultra wide return loss bandwidth with reasonable radiation properties. It features a quite small physical dimension of 16 mm x 25 mm, corresponding to an electrically size of 0.24 λ. A good agreement is achieved between the simulated and the measured antenna characteristics. The major parameters that influence the performance of the antenna are investigated numerically to gain an insight into the antenna operation. Time domain performance of the antenna is also examined in order to assess its suitability for impulse radio applications.
A Compact Microstrip Square-Ring Slot Antenna for UWB Applications
Saeed Sadat;Masum Fardis;Fatemeh Geran Gharakhili;Gholamreza R. Dadashzadeh
PIER , 2007, DOI: 10.2528/PIER06082901
Abstract: A microstrip square-ring slot antenna (MSRSA) for UWB (Ultra Wideband) antenna applications is proposed and improved by compaction. This structure is fed by a single microstrip line with a fork like-tuning stub. By splitting the square-ring slot antenna (SRSA) and optimization ofthe feeding network, the required impedance bandwidth is achieved over the UWB frequency range (3.1 to 10.6 GHz). The experimental and simulation results exhibit good agreement together. Parametric study is applied to compaction of structure. This compaction provides a good radiation pattern and a relatively constant gain over the entire band off requency.
International Journal of Pure and Applied Research in Engineering and Technology , 2012,
Abstract: This paper presents a Microstrip Antenna for Ultra Wide Band frequency for cover a large bandwidth of 3.1 GHz and 13.1GHz for the resonance frequency of 6.5 and its wide application like WLAN, Wi-MAX, Medical Application, radar imaging technology, PC Peripherals, Wireless USB. The gain and directivity of the proposed antenna are presented at different UWB band frequencies. For HFSS is used to design and simulation of antenna.
A Compact Band-Notched UWB Planar Monopole Antenna with Parasitic Elements
Mohammad Yazdi;Nader Komjani
PIER Letters , 2011, DOI: 10.2528/PIERL11043002
Abstract: In this paper, a planar microstrip UWB monopole antenna with a good band-rejection is presented. By using a pair of arc shaped parasitic elements around the patch, an excellent notched frequency band for rejecting the WLAN band (5--6\,GHz) can be obtained. The arc shaped strips are parametrically studied and the effects of them on the radiation patterns and time domain behaviour of the UWB antenna are investigated.
Low Profile Slot Loaded Rectangular Unipolar Microstrip Antenna With Three Band-Notched Property And Uwb Operation  [PDF]
International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering , 2013,
Abstract: A low profile slot loaded rectangular unipolar microstrip antenna is proposed for three band-notched property to eliminate GPS and WLAN interference signals in UWB operation. The antenna has a simple structure consisting of a wide rectangular slot loaded on the centre axis of the radiating patch to obtain triple band notched property in the frequency range of 1.30 to 4.69, 4.76 to 7.15 and 10.09 to 10.33 GHz which cover Global Position System (GPS) and Wireless Local Area Network (WLAN) interference in UWB operation. The proposed antenna is simple in structure and use low cost substrate material. The antenna operates between 1 to 16 GHz and gives ominidirectional radiation characteristics with peak gain of 8.62 dB and maximum virtual size reduction of 57.66 %. The proposed antenna may find application in microwave communication systems.
A Time-Domain Approach to the Synthesis of UWB Antenna Systems
Leonardo Lizzi;Giacomo Oliveri;Andrea Massa
PIER , 2012, DOI: 10.2528/PIER11103003
Abstract: In this paper, an approach for the synthesis of Ultra-Wideband (UWB) antenna systems in the time domain is proposed. Starting from the definition of suitable time-domain performance indexes, the design process is based on a spline representation of the antenna shape and a Particle Swarm Optimization (PSO) aimed at matching optimal radiation and electrical conditions. The effectiveness of the proposed time-domain technique is assessed by means of both numerical and experimental results.
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