Active Antennas Beyond the Standard Impedance Matching Technique: Concepts and Applications
IEEE Open Journal of Antennas and PropagationThis paper presents a new design concept for improving active antennas’ performances beyond the standard impedance matching technique. The proposed approach expands the mismatch at the antenna-amplifier interface to create a voltage excess ...
Constant M. A. Niamien
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Serial Patch Array Antenna for an FMCW Radar Housed in a White Cane
International Journal of Antennas and Propagation, 2016 The design, realization, and test of the transmitting and receiving antennas for an FMCW radar operating between 24 and 24.25 GHz (ISM band), to be housed in a white cane for improving mobility of visually impaired subjects, have been performed.
Stefano Pisa +2 more
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Research of independent DC electric field sensor with wireless power supply circuit
The Journal of Engineering, 2019 The DC electric field strength is an important electromagnetic environment parameter of the high-voltage direct current (HVDC) transmission line. Measurement results of the space electric field are dramatically affected by the size and the potential of ...
Jianzhong When +5 more
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IEEE Open Journal of Antennas and Propagation, 2023 In classical antenna theory, the Thévenin equivalent circuit is a commonly used tool to analyze the characteristics of receiving antennas. However, when dealing with a lossy antenna that is near a large load impedance, this circuit has limitations
Junming Diao, Lu Liu
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Circularly Polarized Receiving Antenna Incorporating Two Helices to Achieve Low Backscattering [PDF]
, 2012 We propose to use an antenna composed of two orthogonal helices as a low-scattering sensor. The vector effective length is derived for the antenna using the small dipole approximation for the helices.
Karilainen, Antti O. +1 more
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Simulation-based configurations study of active millimetre-wave imaging system for personal security
The Journal of Engineering, 2019 Active millimetre-wave (mm-wave) imaging techniques and systems have been widely investigated and developed, due to their ability to detect personal carried concealed weapons and other contraband, at airports and other secure locations.
Yan You, LingBo Qiao, ZiRan Zhao
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An investigation into the Gustafsson limit for small planar antennas using optimisation [PDF]
, 2013 The fundamental limit for small antennas provides a guide to the effectiveness of designs. Gustafsson et al, Yaghjian et al, and Mohammadpour-Aghdam et al independently deduced a variation of the Chu-Harrington limit for planar antennas in different ...
Lewis, Andrew +2 more
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Simulation of interaction of antennas in the near zone
Вісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електронікаRelevance. Obtaining the minimization or maximization of the interaction between the radiating and receiving antennas (or the receiving antenna with fields reflected from some obstacle) due to the orientation and location of the antennas at a certain ...
М. Legenkiy, V. Khrychov
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Analysis of RF Front-End Performance of Reconfigurable Antennas with RF Switches in the Far Field
International Journal of Antennas and Propagation, 2014 The RF front-end performances in the far-field condition of reconfigurable antennas employing two commonly used RF switching devices (PIN diodes and RF-MEMS switches) were compared.
Insu Yeom +4 more
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Efficient full-wave modeling of radiative near-field interactions in semi-anechoic conditions [PDF]
, 2015 In this paper, a full-wave method to efficiently compute the electromagnetic interaction between two devices placed in semi-anechoic conditions is proposed.
Rogier, Hendrik +2 more
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