Results 71 to 80 of about 152,070 (212)

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
doaj   +1 more source

AlGaN/GaN varactor diode for integration in HEMTcircuits

Electronics Letters, 2001
The fabrication and characterisation of metal-semiconductor-metal (MSM) diodes above an AlGaN/GaN HEMT layer system for varactor applications are reported. Device fabrication uses standard HEMT processing steps, allowing integration in HEMT circuits without the need of sophisticated growth or etching techniques. Capacitance-voltage measurements exhibit
MARSO, Michel, Wolter, M., Javorka, P., Fox, A., Kordoš, P.   +4 more
openaire   +2 more sources

Metasurface‐Enabled Active‐Like Passive Radar

Advanced Science, Volume 13, Issue 44, 7 August 2026.
A programmable space‐time‐coding metasurface embeds distinct spatiotemporal tags into ambient wireless signals, allowing passive radar to operate in an active‐like manner. By enabling code‐correlated reconstruction under interference, the approach supports robust real‐time UAV tracking in complex environments and points to intelligent, low‐power ...
Mingyi Li, Jiawen Xu, Hanting Zhao, Xu Zhao, Yanjin Chen, Tie Jun Cui, Vincenzo Galdi, Lianlin Li   +7 more
wiley   +1 more source

Heterostructure Barrier Varactor Multipliers

, 1998
We describe the Heterostructure Barrier Varactor (HBV) diode and its application in frequency multipliers. Different varactor models are presented that easily can be used in large signal simulations.
Stake, Jan,, Dillner, Lars,, Kollberg, Erik,   +2 more
core   +1 more source

Progress in Heterostructure Barrier Varactor Frequency Multipliers

, 2000
The Heterostructure Barrier Varactor diode and its performance as a varactor frequency multiplier is ...
Dillner, Lars, Stake, Jan, Kollberg, Erik, Kollberg, Erik L., Ingvarson, Mattias   +4 more
core  

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, J. Rodriguez, I. Otung, W. Mshwat, R. Abd-Alhameed   +4 more
doaj  

High-efficiency powerful millimeter wave varactor multiplier [PDF]

, 1996
The paper describes development and investigation of varactor doubler from input frequency 36 GHz to output 72 GHz. To increase the output power two diode balance multiplier circuit was used. The multiplier was developed for output power no less than 100
Vald-Perlov, V.M., Kosov, A.S., Zotov, V.A.   +2 more
core   +1 more source

Varactor-Based Tunable Sensor for Dielectric Measurements of Solid and Liquid Materials

Journal of Sensor and Actuator Networks
In 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, Weidong Hu, Qasim Ali, Ali Raza Barket, Gulab Shah   +4 more
doaj   +1 more source

Elastance coefficients of varactor diodes

Electronics Letters, 1965
The elastance coefficients of a diode are derived for inclusion in standard varactor theory.
openaire   +1 more source

Planar Inverted-F Antennas (PIFA) for multiband wireless applications [PDF]

, 2010
This is a post-print version of the article - Copyright @ 2010 IEEEA compact reconfigurable four bands Planar Inverted-F Antenna (PIFA) is presented for Digital Video Broadcasting – Handheld (DVB-H), Universal Mobile Telecommunications System (UMTS ...
AbuTarboush, HF, Nilavalan, R, Peter, T
core   +2 more sources