Results 101 to 110 of about 1,302 (222)

Analysis of Carrier Transport in a Heterostructure Barrier Varactor Diode Tripler

, 1997
We report the time evolution and the spatial variation of the conduction band, the electric field, and the carrier density for a GaAs/Al0.7GaAs Heterostructure Barrier Varactor diode operating in a 3x90 GHz frequency tripler.
Jones, J. Robert, Dillner, Lars, Jones, Stephen H., Stake, Jan   +3 more
core   +1 more source

A design of inverse class-J power amplifier using varactor diode for 4G communication systems

, 2019
© 2018 IEEE. A Class-J Power Amplifier is designed with a varactor diode on its input matching network to improve its efficiency. To enhance the efficiency of the designed power amplifier, it is operated in inverse mode.
Dura, KDJ, Dutkiewicz, E, Nabua, CMB, Hora, JA, Xi, Z, Gerasta, OJ, Nericua, RT   +6 more
core   +1 more source

Frequency tuning varactor-loaded reconfigurable antenna for m-WiMAX and WLAN applications

, 2019
A design approach for a microstrip patch antenna to achieve the reconfigurable dual-band operation with a tunable device is presented in this work. The approach uses a BB833 varactor diode in the middle of a slotted patch antenna which which is able to ...
Z. Abidin, Z., Seman, F. C., C. Seman, F., Abidin, Z. Z., Hamzah, S. A., Hamdan, K., Katiran, N., Shah, S. M., Zubir, F.   +8 more
core   +1 more source

Varactor Device with Reduced Temperature Dependence

, 2009
he invention discloses a varactor device (100) for improved temperature stability, comprising a first varactor (160) connected to a decoupling network (150). The device further comprises a voltage stabilizer (110), said stabilizer comprising a capacitor (
Gevorgian, Spartak,, Lewin, Thomas, Jacobsson, Harald,   +2 more
core   +1 more source

Experimental Characterization of a New Active Huygens’ Metasurface-Based Element for Beam Steerable Lens at Ka-Band

IEEE Access
In this paper, a novel reconfigurable linearly polarized ultrathin unit cell design for lens applications at Ka-band frequencies (26-28.75 GHz) is presented.
Zohre Pourgholamhossein, Tayeb A. Denidni   +1 more
doaj   +1 more source

Design Considerations for Heavily-Doped Cryogenic Schottky Diode Varactor Multipliers

, 2001
Diode modeling for Schottky varactor frequency multipliers above 500 GHz is presented with special emphasis placed on simple models and fitted equations for rapid circuit design.
Schlecht, E., Martin, S., Chattopadhyay, G., Mehdi, I., Maiwald, F.   +4 more
core  

Scan Performance of Infinite Arrays of Microstrip Patch Elements Loaded with Varactor Diodes

, 1993
In this paper the analysis and scanning characteristics of an infinite array of rectangular microstrip patches each loaded with a varactor diode is presented. The analysis is based on full-wave moment method theory and uses attachment modes to accurately
Shuley N.V., Waterhouse R.B.
core   +1 more source

Varactor device with reduced temperature dependence

, 2010
he invention discloses a varactor device (100) for improved temperature stability, comprising a first varactor (160) connected to a decoupling network (150). The device further comprises a voltage stabilizer (110), said stabilizer comprising a capacitor (
Gevorgian, Spartak,, Lewin, Thomas, Jacobsson, Harald,   +2 more
core  

Varactor diodes for millimeter and submillimeter wavelengths

, 1992
Whisker-contacted GaAs Schottky barrier varactor diodes are the most common high-frequency multiplier element in use today. They are inherently simple devices that have very high frequency response and have been used to supply local oscillator power for ...
Dossal, Hasan, Crowe, Thomas W., Hesler, Jeffrey L., Rizzi, Brian J.   +3 more
core