Results 241 to 250 of about 57,568 (302)
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Subpicosecond photoconducting dipole antennas
IEEE Journal of Quantum Electronics, 1988Photoconducting antennas have been demonstrated which are capable of generating and coherently detecting subpicosecond electrical pulses. These antennas, when illuminated with femtosecond optical pulses, radiate electrical pulses which have frequency spectra that extend from 2 THz.
P.R. Smith, D.H. Auston, M.C. Nuss
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Printed Dipole Antenna with Stepped-Width Dipoles
2020 1st International Conference Problems of Informatics, Electronics, and Radio Engineering (PIERE), 2020The new printed dipole antenna is presented in the paper. The main advantage of the antenna in comparison with classic printed dipole antenna is a small length of dipoles due to their stepped configuration. The antenna works at two central frequencies simultaneously and can be used both as a standalone antenna and as a part of antenna arrays.
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Reconfigurable metamaterial dipole antenna
2014 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2014In this paper a reconfigurable dipole antenna at the frequency of 3.33 GHz is presented. This antenna offers a gain enhancement of about 3 dB over a conventional dipole and also provides a reconfigurable pattern in the E-plane. To produce these features, the antenna uses a new reconfigurable metamaterial unit-cell.
Behnam Zarghooni +2 more
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2015 International Conference on Antenna Theory and Techniques (ICATT), 2015
Advantages of the diamond dipole antenna as an active antenna are presented. Such an antenna is like an inverted bow-tie antenna, but the former has some advantages over the ordinary bow-tie antenna. It is shown that the diamond dipole antenna may be an effective element of a new antenna array for low-frequency radio astronomy as well as a ...
I.N. Bubnov +4 more
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Advantages of the diamond dipole antenna as an active antenna are presented. Such an antenna is like an inverted bow-tie antenna, but the former has some advantages over the ordinary bow-tie antenna. It is shown that the diamond dipole antenna may be an effective element of a new antenna array for low-frequency radio astronomy as well as a ...
I.N. Bubnov +4 more
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Orthogonal infrared dipole antenna
Infrared Physics & Technology, 2008A dual-dipole structure is demonstrated at 10.6 μm, which facilitates electronic cancellation of the non-antenna-coupled thermal response of an infrared antenna-coupled bolometer. Structures of this type may also find utility in high-spatial-resolution measurement of Stokes parameters of a beam of radiation.
Krenz, Peter +2 more
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Parabolically Bent Dipole Antenna
TELSIKS 2005 - 2005 uth International Conference on Telecommunication in ModernSatellite, Cable and Broadcasting Services, 2006The aim of this paper is to present the usage of integral equation for current distribution at curvilinear dipole antennas, which is originally developed by the first author, on the example of parabolically bend dipole. Without details, such as describing the procedures for isolation of quasi-singularity, numerical integration, etc, which can be found ...
D.M. Petkovic, D.D. Krstic
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Radio Science, 1967
A 12‐element log‐periodic dipole antenna is investigated with the three‐term theory described and verified experimentally in a companion paper (Cheong and King, 1967). The general frequency‐independent behaviour for the distributions of current, the driving‐point admittances, and the power for all elements over a wide range of frequencies.
Weng‐Meng Cheong, Ronold W. P. King
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A 12‐element log‐periodic dipole antenna is investigated with the three‐term theory described and verified experimentally in a companion paper (Cheong and King, 1967). The general frequency‐independent behaviour for the distributions of current, the driving‐point admittances, and the power for all elements over a wide range of frequencies.
Weng‐Meng Cheong, Ronold W. P. King
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Modified folded dipole antenna
Proceedings of the International Conference & Workshop on Emerging Trends in Technology - ICWET '11, 2011This paper describes experimentally how a folded dipole antenna is better in performance than a simple dipole antenna and also describes an alternate way to design folded dipole antenna compatible with loop antenna to generate circular polarized wave.
N. G. Sharma +3 more
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2012 IEEE 11th International Conference on Actual Problems of Electronics Instrument Engineering (APEIE), 2012
New dipole type antenna fed from waveguide is designed using method of moments and induced electromotive forces. Numeric and experimental results are presented. In order to drive arm of antenna with waveguide WR-430 two equal magnitude anti-phase signals are used.
Anatolii P. Gorbachev +1 more
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New dipole type antenna fed from waveguide is designed using method of moments and induced electromotive forces. Numeric and experimental results are presented. In order to drive arm of antenna with waveguide WR-430 two equal magnitude anti-phase signals are used.
Anatolii P. Gorbachev +1 more
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1980 Antennas and Propagation Society International Symposium, 1980
As electromagnetic energy passes through a planar array of linear dipoles, it undergoes a phase shift which is a function of the operating frequency and the array parameters. This property has been used to design and construct a lightweight zoned microwave lens antenna which has possible spacecraft applications.
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As electromagnetic energy passes through a planar array of linear dipoles, it undergoes a phase shift which is a function of the operating frequency and the array parameters. This property has been used to design and construct a lightweight zoned microwave lens antenna which has possible spacecraft applications.
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