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Wideband, Non-Foster Impedance Matching of Electrically Small Transmitting Antennas
IEEE Transactions on Antennas and Propagation, 2018Electrically small antennas (ESAs) can be passively matched only over very narrow bandwidths and the resulting antennas have low gains. These are the major limiting factors for ESAs used in transmit applications, especially at high-frequency (HF) and lower Very HF frequency bands.
Ting-Yen Shih, Nader Behdad
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Design of a non-Foster impedance matching network for electrically small antennas
2013 13th Mediterranean Microwave Symposium (MMS), 2013As an antenna becomes smaller, its input reactance increases to greater than its input resistance, resulting in a significant increase of it radiation quality factor and drastic decrease of its bandwidth. Therefore, there is a need for a matching network at the antenna terminals, which may be devised by negative impedance converters (NIC).
Homayoon Oraizi, Seyyed Hamzeh Hashemi
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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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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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Measurement: Journal of the International Measurement Confederation, 2023
Wenchang Huang +2 more
exaly
Wenchang Huang +2 more
exaly
, 2022 Correction to “Wideband, Non-Foster Impedance Matching of Electrically Small Transmitting Antennas”
IEEE Transactions on Antennas and Propagation, 2023Ting-Yen Shih, Nader Behdad
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