Results 61 to 70 of about 547 (185)
Frequency multipliers on semiconductor diode structures
Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2018 Obvious advantages of the millimeter wave technology including a large information capacity, high directivity of radiation, diagnostics and spectroscopy capabilities of different environments, including the methods of electron paramagnetic resonance and ...
M. F. Karushkin
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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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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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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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Low-distortion downconvertor using varactor diodes
Electronics Letters, 1978 A balanced varactor downconvertor for a 6.8 GHz input signal is described. Measured intermodulation and conversion performance are given. Compared to Schottky-diode mixers this downconvertor has a considerably higher 3rd-order intercept point.
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A New Two-Port MIMO Filtenna With Tunable Bandwidth and Center Frequency
IEEE AccessA new two-port MIMO filtenna with center frequency and bandwidth tunability is introduced by integrating a tunable filter into the feeding section of a monopole antenna.
Alper Turkeli +3 more
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A Wideband Subharmonic Image-Reject Mixer With a Fixed IF Using Schottky Diodes
IEEE Journal of MicrowavesThis work presents a Schottky anti-parallel diode pair (APDP)-based wideband subharmonic image-rejecting mixer (SH-IRM) with high image rejection and port-to-port isolation.
Rijubrata Pal, Mrinal Kanti Mandal
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Comparison of Antennas Electrical Tuning Methods for Mobile Applications
Известия высших учебных заведений России: Радиоэлектроника, 2017 The various methods of antenna electrical tuning for mobile handsets working in several LTE frequency bands are described. The PIFA-type antenna containing high and low frequency branches is proposed.
A. D. Grigoriev, B. Djalilov
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