Results 21 to 30 of about 87,553 (311)
Impedance Matching of Electrically Small Antenna with Ni-Zn Ferrite Film
Journal of Magnetics, 2013 We demonstrate that a partial loading of Ni 0.5 Zn 0.5 Fe₂O₄ (Ni-Zn ferrite) film remarkably improves impedance matching of electrically small Ba₃Co₂Fe 24 O 41 (Co₂Z) hexaferrite antenna. A 3 μm thick Ni-Zn ferrite film was deposited on a silicon wafer by the electrophoresis deposition process and post-annealed at 400 ℃.
Jaejin Lee +3 more
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Journal of Engineering Science and Technology Review, 2014 A new method that is based on genetic algorithm (GA) is developed to design electrical impedance matching network for broadband piezoelectric ultrasound transducer. The new method can both optimize the topology of the matching network and perform optimization on the components at the same time.
Jianfei An, Shuangxi Zhang
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Non-Foster Impedance Wideband Matching Technique for Electrically Small Active Antenna [PDF]
International Journal of Antennas and Propagation, 2013 This paper investigates a non-Foster wideband circuit matching technique for an electrically small antenna (ESA). By introducing a negative impedance convertor into an active network, the active network can obtain an equivalent input gain at input port to improve gain, sensitivity and output ratio of signal to noise.
Wenxing Li +3 more
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Advances in Crosstalk Reduction Techniques for Ultrasonic Transducer Arrays [PDF]
SensorsCrosstalk between elements in ultrasonic transducer arrays significantly degrades image quality in medical ultrasound systems by introducing noise and reducing spatial resolution.
Anouar Boujenoui +4 more
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Strain-dependent modeling of a mechano-electrochemical energy harvester based on carbon nanotube yarn [PDF]
Scientific ReportsThis paper introduces the electrochemical equivalent circuit model for a carbon nanotube (CNT) coiled yarn subjected to external mechanical deformation. The mechanically coiled CNT yarn electrode, with average coil diameters of 83 μm and 112 μm, operates
Yongjoo Ahn +4 more
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Theoretical and Empirical Verification of Electrical Impedance Matching Method for High-Power Transducers [PDF]
Electronics (Switzerland), 2022 Jungwoo Lee, Jinhyuk Kim
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Design Theory of Equal Split Dual- Band Power Divider without Reactive Elements
Advanced Electromagnetics, 2022 In this paper, a design approach for getting dual-band working in a Wilkinson-based power divider (WPD) without adding any reactive elements or open- or short-circuited stubs is presented.
Natarajamani S, Rekha G. Nair
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Sensors, 2023 Improving the operational efficiency and optimizing the design of sound navigation and ranging (sonar) systems require accurate electrical equivalent models within the operating frequency range.
Jejin Jang +3 more
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Compact Load Network Having a Controlled Electrical Length for Doherty Power Amplifier
IEEE Access, 2022 The load network of the carrier amplifier for the conventional Doherty power amplifier (DPA) consists of an impedance matching circuit, an offset line, and a $\lambda $ /4 transmission line (TL), so that the overall electrical length of the network can ...
Kuhyeon Kwon +12 more
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GHz operation of a quantum point contact using stub-impedance matching circuit
Physics Open, 2023 Quantum point contacts (QPC) are the building blocks of quantum dot qubits and semiconducting quantum electrical metrology circuits. QPCs also make highly sensitive electrical amplifiers with the potential to operate in the quantum-limited regime. Though
Anusha Shanmugam +5 more
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