Results 241 to 250 of about 55,869 (299)
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Broadband UHF flexible vivaldi antenna
2013 Loughborough Antennas & Propagation Conference (LAPC), 2013A novel Vivaldi flexible antenna with a -6 dB bandwidth from 150 MHz up to 900 MHz is presented. The whole antenna is realized on a 600 × 600 mm2 silicone foam substrate. In this paper we describe the design, the realization and the performances of this high gain and directive antenna.
Presse, Anthony +3 more
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Compact broadband stacked microstrip antennas
Microwave and Optical Technology Letters, 2005Various stacked broadband microstrip antennas using compact variations of the rectangular microstrip antenna, such as C-shaped, H-shaped, square-ring and S-shaped antennas, are proposed. The effects of using combinations of these compact antennas as a fed or stacked element on the bandwidth, gain, and radiation pattern of the antenna are discussed ...
DESHMUKH, AA, KUMAR, G
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A broadband microstrip antenna: SGMFP antenna
Microwave and Optical Technology Letters, 2003AbstractA novel structure of broadband microstrip antennas, termed the SGMFP antenna, is proposed. It is consisted of a slot in the ground plane, a microstrip feedline supported on a substrate, a foam layer, and a patch. It can achieve broad bandwidth and high polarisation purity.
S. Gao +3 more
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1975
Abstract : The subject material may be classified in three separate topics. These are: the analysis of dielectric slab-covered waveguide arrays on large cylinders (extended array coverage), scattering from dielectric-covered periodic screens of small rectangular apertures (broadband antenna/radome technology), and the analysis of a stripline fed notch ...
Jerome Pozgay, Lawrence R. Lewis
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Abstract : The subject material may be classified in three separate topics. These are: the analysis of dielectric slab-covered waveguide arrays on large cylinders (extended array coverage), scattering from dielectric-covered periodic screens of small rectangular apertures (broadband antenna/radome technology), and the analysis of a stripline fed notch ...
Jerome Pozgay, Lawrence R. Lewis
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IRE Transactions on Antennas and Propagation, 1959
A multislot antenna was built, of which the VSWR is smaller than two in the band of 100 to 1000 mc. The principle of this antenna is analogous to the one of pass band filters in which few modes of resonance are possible, appearing one after the other when frequency varies in the band.
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A multislot antenna was built, of which the VSWR is smaller than two in the band of 100 to 1000 mc. The principle of this antenna is analogous to the one of pass band filters in which few modes of resonance are possible, appearing one after the other when frequency varies in the band.
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Broadband fragmented cylindrical antennas
2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015A new type of fragmented cylindrical antenna geometry is introduced that can be applied to common monopole and dipole antennas. Metallic regions of a cylindrical conductor are selectively removed in order to generate alternate current paths that can allow for increased operating bandwidth.
Micah D. Gregory +3 more
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Novel broadband antenna arrays
2012 Loughborough Antennas & Propagation Conference (LAPC), 2012This paper considers the design of high performance dual polarized compact aperture array antennas. A recently developed Octagonal Ring Antenna array, forming a planar structure, demonstrates desirable characteristics in large scale applications and represents a novel technology for array antenna designs. The main electromagnetic performance parameters
A. K. Brown, Y. Zhang
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Miniature broadband wire antenna
2008 Asia-Pacific Microwave Conference, 2008A novel antenna composed of three monopoles is investigated first in this paper. In the frequency range 775 - 1910 MHz, the return loss is lower than -10 dB. Meanwhile the radiation patterns are omnidirectional. On this basis, bending top, fractal, coplanar, and loaded structures are applied to realize the miniaturization.
null Jing-Hui Qiu +3 more
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Broadband quasi-microstrip antenna
IEEE Transactions on Antennas and Propagation, 1995A new printed microwave antenna is presented. The antenna is a hybrid between a wire antenna array and a microstrip patch antenna. Although the size, cost, and efficiency are comparable to the microstrip patch, the voltage standing wave ratio 2:1 bandwidth of the antenna presented here is above 20%.
B.D. Popovic +2 more
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1982 Antennas and Propagation Society International Symposium, 2005
Investigations are reported of an electrically short, asymmetrically fed broadband antenna employing a base isolation choke, The base isolation choke minimizes excitation of the mounting platform and improves radiation patterns. The asymmetrical feed optimizes the antenna current distribution over the 30 to 90 MHz frequency range resulting in improved ...
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Investigations are reported of an electrically short, asymmetrically fed broadband antenna employing a base isolation choke, The base isolation choke minimizes excitation of the mounting platform and improves radiation patterns. The asymmetrical feed optimizes the antenna current distribution over the 30 to 90 MHz frequency range resulting in improved ...
openaire +1 more source