Results 81 to 90 of about 4,662 (208)
Elastance coefficients of varactor diodes
Electronics Letters, 1965 The elastance coefficients of a diode are derived for inclusion in standard varactor theory.
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An investigation of a varactor-diode modulator Technical report no. 3 [PDF]
Low frequency modulator design using single varactor diode as switching ...
Summer, H. M.
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Method and apparatus for measuring distance [PDF]
, 1988 The invention employs a continuous wave radar technique and apparatus which can be used as a distance measuring system in the presence of background clutter by utilizing small passive transponders.
Kobayashi, Herbert S. +2 more
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A varactor-tuned RF coil for nuclear quadrupole double resonance with Fast Field-Cycling MRI [PDF]
, 2014 Non peer reviewedPublisher ...
Broche, Lionel +3 more
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Varactor-Based Tunable Sensor for Dielectric Measurements of Solid and Liquid Materials
Journal of Sensor and Actuator NetworksIn this article, a tunable RF sensor is presented for the measurement of dielectric materials (liquids and solids) based on a metamaterial resonator. The proposed novel configuration sensor has a microstrip line-loaded metamaterial resonator with tunable
Waseem Shahzad +4 more
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Slotted Printed Monopole UWB Antennas with Tunable Rejection Bands for WLAN/WiMAX and X-Band Coexistence [PDF]
Radioengineering, 2018 Four versions of the compact hexagonal-shaped monopole printed antennas for UWB applications are presented. The first proposed antenna has an impedance bandwidth of 127.48 % (3.1 GHz to 14 GHz), which satisfies the bandwidth for ultra-wideband ...
I. Elfergani +4 more
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Maser cavity servo-tuning system [PDF]
, 1985 Two collocated, weakly coupled probes, one loop and one dipole, detect the magnetic and electric fields inside a maser cavity. Signals from the probes are compared in phase, and the signal output from the phase detector is applied to a varactor, the ...
Sydnor, R. L.
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Photoresponse of area-variable varactor diode
Electronics Letters, 1996 Photoresponses and microwave characteristics of an area-variable varactor diode are investigated in the frequency range up to 7 GHz. It is demonstrated that the on/off ratio of its capacitance corresponds to 18.5 at 1 GHz. The capacitance is also significantly altered by photoillumination, and a maximum on/off ratio of 450% is achieved at 1 GHz with ...
null Kim, null Kwon, null Hong
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Design and analysis of reconfigurable filters employing varactor and PIN diodes [PDF]
Engineering and Technology JournalThis work presents a comprehensive and comparative study on reconfigurable/tunable microstrip filters, aiming to analyze and understand the impact of varactors, PIN diodes, lumped capacitors, and inductors on the overall filter performance.
Salah Mahdi +2 more
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Progress on single barrier varactors for submillimeter wave power generation [PDF]
Theoretical work on Single Barrier Varactor (SBV) diodes, indicate that the efficiency for a multiplier has a maximum for a considerably smaller capacitance variation than previously thought. The theoretical calculations are performed, both with a simple
Groenqvist, Hans +4 more
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