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Metamaterial Inspired Varactor-Tuned Antenna with Frequency Reconfigurability and Pattern Diversity. [PDF]
Sensors (Basel)Zhang J +4 more
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Nonlinear metamaterials enhanced surface coil array for parallel magnetic resonance imaging. [PDF]
Nat CommunLi B +8 more
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Design and experimental validation of highly miniaturized microfluidically frequency reconfigurable self-triplexing antenna with high isolation. [PDF]
Sci RepBarik RK +5 more
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Digital coding metamaterials with multi-modulation schemes and beam steering for intra-chip millimeter-wave connectivity. [PDF]
Sci RepShen Z, Taravati S, Yan J.
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Carbon nanotube network varactor
Nanotechnology, 2015Microelectromechanical system (MEMS) varactors based on a freestanding layer of single-walled carbon nanotube (SWCNT) films were designed, fabricated and tested. The freestanding SWCNT film was employed as a movable upper patch in the parallel plate capacitor of the MEMS.
A A, Generalov +6 more
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1966 International Electron Devices Meeting, 1966
A low-loss, low-noise plasma varactor has been developed. This is a variable microwave reactance produced by means of a low pressure, highly efficient gas discharge. This device compares favorably with ferrite or semiconductor devices as far as rf losses and average rf power handling capability are concerned. A low-loss phase shifter has been developed
J.Y. Wada, R.C. Knechtli, B.J. Forman
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A low-loss, low-noise plasma varactor has been developed. This is a variable microwave reactance produced by means of a low pressure, highly efficient gas discharge. This device compares favorably with ferrite or semiconductor devices as far as rf losses and average rf power handling capability are concerned. A low-loss phase shifter has been developed
J.Y. Wada, R.C. Knechtli, B.J. Forman
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Novel heterojunction varactors
Proceedings of the IEEE, 1992Several varactor structures that have been proposed for millimeter- and submillimeter-wave receiver systems are described, and their performance in a harmonic multiplier is compared. The performance is calculated using a nonlinear large-signal analysis program. >
M.A. Frerking, J.R. East
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Radio and Electronic Engineer, 1966
A comparison has been made of the ‘relative impedance’ and ‘transmission’ techniques of measuring the small-signal parameters of varactor diodes. Relative-impedance measurements have been made at u.h.f. and X-band and transmission measurements at X-band.
F.J. Hyde, S. Deval, C. Toker
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A comparison has been made of the ‘relative impedance’ and ‘transmission’ techniques of measuring the small-signal parameters of varactor diodes. Relative-impedance measurements have been made at u.h.f. and X-band and transmission measurements at X-band.
F.J. Hyde, S. Deval, C. Toker
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Optically controlled varactor diode
Journal of Applied Physics, 1991We describe the design and operating characteristics of an optically controlled varactor diode. Applications include optically controlled microwave elements and detection of optical signals in lightwave receivers. The structure consists of a p-n junction formed in an epitaxial layer of InP grown by metalorganic chemical vapor deposition on a semi ...
Chaochieh Tsai +2 more
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