Results 301 to 310 of about 139,401 (323)
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Non-Foster impedance matching of an electrically small loop antenna for biomedical telemetry
2017 IEEE Asia Pacific Microwave Conference (APMC), 2017The demand for miniaturized antennas in biomedical telemetry has been steadily increasing. In biomedical telemetry, electrically small antennas are integrated into exterior portable devices owing to their size in respect of the wavelength to process the received sensing information and power battery-less implantable medical devices (IMDs).
Mohamed Manoufali, Amin Abbosh
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, 2020
As worldwide forest fire frequently causes a serious threat to forest resources and global climate change, novel early forest fire monitoring and detection technologies are urgently required to explore.
Wenquan Liu +6 more
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As worldwide forest fire frequently causes a serious threat to forest resources and global climate change, novel early forest fire monitoring and detection technologies are urgently required to explore.
Wenquan Liu +6 more
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A discussion on the quality factor of impedance matched electrically small wire antennas
IEEE Transactions on Antennas and Propagation, 2005The quality factors of several impedance matched, electrically small wire antennas are compared as a function of matching technique and antenna geometry. The antennas considered have the same height and wire diameter, and they are designed to be self-resonant at approximately the same frequency.
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Applied Physics Letters
An impedance analysis for optically induced dielectrophoresis is presented. A circuit model is developed for this purpose. The model parameters are fully defined in terms of the geometrical and material properties of the system. It is shown that trapping
M. Zaman +3 more
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An impedance analysis for optically induced dielectrophoresis is presented. A circuit model is developed for this purpose. The model parameters are fully defined in terms of the geometrical and material properties of the system. It is shown that trapping
M. Zaman +3 more
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Wideband matching of an electrically small antenna using a negative impedance converter technique
Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation, 2012This paper presents an analysis and design of a negative impedance converter (NIC) circuit for wideband matching of an electrically small antenna operating in the receive mode, and that stability work condition is also given. Experimental results presented demonstrate that the active receiving antenna exhibits good voltage gain and signal-to-noise ...
WenXing Li +4 more
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Research on Acoustic Impedance Matching Method of CMUT Sensor Based on PDMS/BN Particles
IEEE Sensors JournalIn this article, we propose an improved bandwidth matching layer using boron nitride/polydimethy- lsiloxane (BN/PDMS) 0–3 composites to achieve superior electrical insulation and transmission performance for underwater capacitive micromachined ultrasonic
Licheng Jia +9 more
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Study of power efficiency of non-foster impedance matching for electrically small antenna
2014 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium), 2014Electrically small antenna has attracted much attention because of its potential application in compact wireless communication and sensing systems. Matching is needed before any practical application for an electrically small antenna (ka < 1, k — wavelength number, a — radius of the smallest sphere that can surround the antenna) because it has an input
Xiaoju Yu, Qi Tang, Min Liang, Hao Xin
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Impedance Matching and Electric Field Penetration in Metal Vapour Lasers
1996In metal vapour lasers (MVL), the lasing atoms are excited by collision with free electrons. The electrons gain their energy from the electric field (EF) within the plasma. High electron energy (in copper vapour laser, about 10 e V) is required in order to create maximal population inversion.
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Analysis of Electrical Impedance Matching Effect of Phased Array Ultrasonic Transducers
JOURNAL OF THE KOREAN SOCIETY FOR NONDESTRUCTIVE TESTING, 2023Jaewon Jang +3 more
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Electromechanical film (EMFi)-based air-coupled ultrasonic transducers are recognized for their significant potential in non-destructive testing (NDT) applications, primarily due to their large piezoelectric sensitivity and ultra-low acoustic impedance.
Donglin Li +11 more
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Donglin Li +11 more
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