Results 251 to 260 of about 61,993 (309)
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Frontiers in Optics 2012/Laser Science XXVIII, 2012
We discuss progress in the development of slot antennas based on resonant apertures. We show that simultaneous field enhancement and beaming can be produced.
X. M. Goh +6 more
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We discuss progress in the development of slot antennas based on resonant apertures. We show that simultaneous field enhancement and beaming can be produced.
X. M. Goh +6 more
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IEEE Antennas and Propagation Magazine, 2001
When compared to printed cavity-backed spirals, slot spiral antennas offer the possibility of designs that are conformal and very thin. We discuss the physical characteristics of a cavity-backed slot spiral, as well as the associated infinite balun and termination designs.
J.L. Volakis +2 more
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When compared to printed cavity-backed spirals, slot spiral antennas offer the possibility of designs that are conformal and very thin. We discuss the physical characteristics of a cavity-backed slot spiral, as well as the associated infinite balun and termination designs.
J.L. Volakis +2 more
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2010 IEEE Antennas and Propagation Society International Symposium, 2010
The impedance of an open slot antenna at its second resonance has a wider bandwidth than at the ubiquitous first resonance (half wavelength) configurations [1]-[4]. When the supporting groundplane size is small (less than a square wavelength), the wideband nature can be retained [4], but the pattern changes owing to the diffractions from the edges of ...
J X Yun, R G Vaughan
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The impedance of an open slot antenna at its second resonance has a wider bandwidth than at the ubiquitous first resonance (half wavelength) configurations [1]-[4]. When the supporting groundplane size is small (less than a square wavelength), the wideband nature can be retained [4], but the pattern changes owing to the diffractions from the edges of ...
J X Yun, R G Vaughan
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Dualband DRA-slot hybrid slot antenna
2007 IEEE Antennas and Propagation Society International Symposium, 2007A dielectric resonator antenna (DRA) is placed on top of a slotted cavity to form a hybrid antenna. An L-probe is placed inside the cavity to feed the zonal slot, cut onto the cavity, and the DRA simultaneously. Ansoft HFSS was used to analyze the proposed hybrid antenna, which provides a dual-band operation.
Y. Ding, K. W. Leung, Y.C. Or
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Stacked slot-coupled printed antenna
IEEE Microwave and Guided Wave Letters, 1991". IEEE Microw. Guided Wave Lett., vol.1, no.10, p.288-290, 1991.
Croq, F., Papiernik, A.
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IRE Transactions on Antennas and Propagation, 1955
The conditions for endfire radiation from a traveling-wave slot are discussed. These are that the phase velocity of the traveling wave be equal to or less than the velocity of light in free space and that the aperture be excited with a strong longitudinal component of electric field.
B. Stephenson, C. Walter
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The conditions for endfire radiation from a traveling-wave slot are discussed. These are that the phase velocity of the traveling wave be equal to or less than the velocity of light in free space and that the aperture be excited with a strong longitudinal component of electric field.
B. Stephenson, C. Walter
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Planar Triorthogonal Diversity Slot Antenna
IEEE Transactions on Antennas and Propagation, 2017This communication proposes an easily manufacturable multifunction multiport planar slot antenna with triorthogonal pattern diversity. Distinct radiation patterns are emitted via a common square radiative slot by exploiting three orthogonal modes. These slot modes consist of a magnetic current loop mode with an omnidirectional linearly polarized (OLP ...
Nicholas P. Lawrence +2 more
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33rd European Microwave Conference, 2003, 2003
A cavity-backed slot antenna is proposed. The antenna is theoretically and experimentally studied. The antenna consists of a slot cut in a ground plane and backed by shorting strips, forming a backing cavity. Experimental studies of the antenna show a 2:1 VSWR input impedance bandwidth of more than 20%.
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A cavity-backed slot antenna is proposed. The antenna is theoretically and experimentally studied. The antenna consists of a slot cut in a ground plane and backed by shorting strips, forming a backing cavity. Experimental studies of the antenna show a 2:1 VSWR input impedance bandwidth of more than 20%.
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Annular slot windshield antenna
IEEE Transactions on Vehicular Technology, 1998This paper discusses the development of a conformal automobile antenna for the AM/FM band. It is implemented by using a heat reduction metal film imbedded in the windshield to create an annular gap or slot at the circumference. Impedance characteristics and gain patterns are shown. The antenna system is effective, inexpensive and invisible.
E. Walton, R. Abou-Jaoude, M. Pekar
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ICMMT 4th International Conference on, Proceedings Microwave and Millimeter Wave Technology, 2004., 2005
The tapered microstrip transition with an overlapped coplanar stripline (CPS) as a feeding structure that effectively excited tapered slot antenna (TSA) geometry is proposed. This designed antenna has the merits such as wideband, simple balun feeding network, low profile compact size with fairly good antenna performances (VSWR, gain and radiation ...
null Jwo-Shiun Sun, null Guan-Yu Chen
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The tapered microstrip transition with an overlapped coplanar stripline (CPS) as a feeding structure that effectively excited tapered slot antenna (TSA) geometry is proposed. This designed antenna has the merits such as wideband, simple balun feeding network, low profile compact size with fairly good antenna performances (VSWR, gain and radiation ...
null Jwo-Shiun Sun, null Guan-Yu Chen
openaire +1 more source