Results 241 to 250 of about 59,565 (296)
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2021
Wideband operation is often desired for modern wireless systems, applications include, data hungry multi-standard wireless communication systems, ultrahigh-resolution radars desired for connected and autonomous driving applications, imaging systems for healthcare or security applications.
Naeem, Umair, Fusco, Vincent
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Wideband operation is often desired for modern wireless systems, applications include, data hungry multi-standard wireless communication systems, ultrahigh-resolution radars desired for connected and autonomous driving applications, imaging systems for healthcare or security applications.
Naeem, Umair, Fusco, Vincent
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2011 International Workshop on Antenna Technology (iWAT), 2011
A conventional curl antenna is modified into a staircase curl antenna to realize a wideband axial ratio characteristic. It is found that the staircase curl has a dramatically wide bandwidth of approximately 50% for a 3 dB axial ratio criterion. It is also found that the VSWR exhibits values of less than 2 within this axial ratio bandwidth.
H. Nakano, R. Satake, J. Yamauchi
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A conventional curl antenna is modified into a staircase curl antenna to realize a wideband axial ratio characteristic. It is found that the staircase curl has a dramatically wide bandwidth of approximately 50% for a 3 dB axial ratio criterion. It is also found that the VSWR exhibits values of less than 2 within this axial ratio bandwidth.
H. Nakano, R. Satake, J. Yamauchi
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IEEE Communications Magazine, 2004
Ultra wideband antennas are specifically designed to transmit and/or receive very short time durations of electromagnetic energy. It is well known that UWB antenna design remains the major factor in the progress of UWB technology. This article describes a study of conventional antennas and why they are not suitable for a UWB system.
K.Y. Yazdandoost, R. Kohno
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Ultra wideband antennas are specifically designed to transmit and/or receive very short time durations of electromagnetic energy. It is well known that UWB antenna design remains the major factor in the progress of UWB technology. This article describes a study of conventional antennas and why they are not suitable for a UWB system.
K.Y. Yazdandoost, R. Kohno
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Ultra-wideband sources and antennas
Ultra- Wideband Short-Pulse Electromagnetics 4 (IEEE Cat. No.98EX112), 2002Ultra-Wideband (UWB) sources and antennas are of interest for a variety of potential applications that range from transient radar systems to communications systems. In this paper, we discuss the research issues and progress being made in gas, oil and solid state switching, UWB sources, and antennas.
William D. Prather +10 more
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Wideband substrate‐integrated monopole antenna
Microwave and Optical Technology Letters, 2016ABSTRACTA coaxial probe fed wideband low‐profile electric monopole cavity antenna with measured impedance bandwidth of 56% at a central operating frequency of 8 GHz is proposed. The antenna, based on a modified shorted square patch, effectively forms a substrate‐integrated cavity with four curved radiating slots at its periphery.
Lawrence, N.P., Fumeaux, C., Abbott, D.
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Wideband semielliptical monopole antenna
2011 - MILCOM 2011 Military Communications Conference, 2011A printed semi-elliptical monopole fed by a grounded coplanar waveguide is investigated as a low-profile, light-weight, wideband radiator. Two methods of improving the impedance match at higher frequencies without increasing the occupied volume are reported.
Rajesh C Paryani, Rod Waterhouse
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Wideband Metamaterial Antenna Design
2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP), 2018This paper presents the design of composite right/left handed transmission line (CRLH TL) wideband metamaterial antenna. The bandwidth enhancement was achieved by replacing horizontal ohm's shape slot with series horizontal slot. A comprehensive parametric analysis using Computer Simulation Technology CST software is carried out by varying the position
Adamu Y Iliyasu +6 more
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Wideband columnar slot antenna
Microwave and Optical Technology Letters, 2016ABSTRACTA wideband columnar antenna featuring a radiating slot cut around the outside circumference of a rectangular waveguide is presented. The antenna operates effectively in the frequency band of 1.51–4.75 GHz. The antenna also exhibits a reasonably good omnidirectional pattern in the horizontal plane, with predominantly vertical polarization.
Lev Pazin, Yehuda Leviatan
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Wideband triangular patch antenna
IEE Proceedings - Microwaves, Antennas and Propagation, 1999A wideband single layer triangular patch antenna fed by an L-shaped probe is proposed. It achieves 42% impedance bandwidth (SWR/spl les/2) and a maximum gain of 6 dBi. A foam layer of thickness /spl sim/10% of the operating wavelength is used as the supporting substrate. The radiation pattern is stable across the passband.
C.L. Mak, K.M. Luk, K.F. Lee
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IEE National Conference on Antennas and Propagation, 1999
This paper describes the development of a wideband radiating element suitable for use in a planar array. The design is a more compact form of the fan dipole reported by Bailey (1984). An experimental array of such dipoles was constructed in order to evaluate the mutual coupling between the elements and the embedded radiation patterns.
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This paper describes the development of a wideband radiating element suitable for use in a planar array. The design is a more compact form of the fan dipole reported by Bailey (1984). An experimental array of such dipoles was constructed in order to evaluate the mutual coupling between the elements and the embedded radiation patterns.
openaire +1 more source