Results 251 to 260 of about 57,568 (302)

Broadband hybrid dipole antenna

2016 IEEE International Symposium on Antennas and Propagation (APSURSI), 2016
A compact hybrid dipole antenna is presented with enhanced bandwidth. The antenna consists of a half-wavelength driven dipole and a one-wavelength parasitic folded dipole. By properly engineering the resonant frequencies of the driven dipole and the parasitic folded dipole, wide bandwidth with S 11 ≤ −10 is achieved from 1.82 GHz to 2.27 GHz (450 MHz,
Changjiang Deng, Yue Li, Zhijun Zhang, Zhenghe Feng   +3 more
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Wideband patch dipole antenna

2005 IEEE Antennas and Propagation Society International Symposium, 2005
A novel wideband patch dipole antenna is proposed and simulated by Ansoft HFSS. Calculated results show that the relative bandwidth can reach 66.7% with VSWR less than 2. A model antenna is fabricated with microstrip structure. Good agreement is achieved between experimental and simulated results.
null Yu-Mei Guo, null Ying-Zeng Yin, null Jing-Li Guo, null Jin-Ping Ma, null Hui-Li Zheng   +4 more
openaire   +1 more source

Plasma receiving dipole antenna

Bulletin of the Lebedev Physics Institute, 2010
The possibility of signal reception (in a frequency range of 30–50 MHz) by the plasma dipole antenna excited by transmitter self-radiation in the same frequency range was experimentally shown.
N. G. Gusein-zade, I. M. Minaev, K. Z. Rukhadze   +2 more
openaire   +1 more source

Broadband Dipole Antennas

2014
In this chapter we will study some simple dipole type configurations that can provide a broader bandwidth: the cylindrical dipole and biconical antenna. In addition, the chapter introduces the folded dipole antenna, which can provide better matching characteristics than that of the single dipole.
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Quadrupole radiation from terahertz dipole antennas

Optics Letters, 2000
We report what is to our knowledge the first detailed investigation of the polarization state of radiation from lens-coupled terahertz dipole antennas. The radiation exhibits a weak but measurable component that is polarized orthogonally to the orientation of the emitter dipole.
J V, Rudd, J L, Johnson, D M, Mittleman
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Antenna factors of dipole and monopole antennas

Proceedings of 20th Biennial Conference on Precision Electromagnetic Measurements, 2002
Antenna factors of dipole antennas in the frequency range 20 MHz to 600 MHz have been determined to an uncertainty of /spl plusmn/0.1 dB (95%CL) and of monopole antennas in the range 10 MHz to 100 MHz to an uncertainty of /spl plusmn/0.15 dB. This leads to an advance in the precision with which electric field strength of free-space signals can be ...
M.J. Alexander, M.J. Salter
openaire   +1 more source

Tunable loop-loaded printed dipole antenna design

2010 IEEE Antennas and Propagation Society International Symposium, 2010
Compact multi-function antennas play a major role in today's communication systems where size, weight, power consumption and cost are the main limiting factors in designing integrated transmitter/receiver circuitry. In this view, electronically reconfigurable printed antennas were previously considered to achieve multi-band applications [1–4].
ERDEMLİ, YUNUS EMRE, SONDAŞ, ADNAN, UÇAR, MUSTAFA HİKMET BİLGEHAN   +2 more
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A generalized crossed dipole antenna, the Fourtear antenna

IEEE Antennas and Propagation Society Symposium, 2004., 2004
A generalized form of a crossed dipole antenna, the Fourtear antenna, has been designed and tested. The Fourtear antenna is a promising dual-polarized broadband antenna element. The antenna consists of four identical teardrop elements, but the horizontal elements are positioned perpendicular to the vertical elements. The radiating element is printed on
null Seong-Youp Suh, W. Stutzman, W. Davis, A. Waltho, J. Schiffer   +4 more
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Experiments with dipole antennas

European Journal of Physics, 2009
Employment of a data-acquisition system for data collection and calculations makes experiments with antennas more convenient and less time consuming. The determined directional patterns of the dipole antennas of different lengths are in reasonable agreement with theory.
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High‐gain printed dipole antenna

Microwave and Optical Technology Letters, 2005
AbstractA printed dipole antenna showing high gain (about 6.8 dBi) radiation in the azimuthal plane is presented. The dipole antenna has a narrow width of 10 mm and a total length of about 202 mm (with 1.64 wavelengths of the frequency at 2442 MHz, the center frequency of the 2.4‐GHz WLAN band).
Yung‐Tao Liu, Ting‐Chih Tseng, Kin‐Lu Wong   +2 more
openaire   +1 more source