Results 51 to 60 of about 925 (148)

Parametric Amplification/Mixing Using the Varactor Diode

Active and Passive Electronic Components, 1996
This paper deals with the large-signal analysis of parametric amplification/mixing using reverse biased p-n junction varactor diodes. Expressions are obtained for the current components of the parametric amplification/mixing.
Muhammad Taher Abuelma'atti
doaj   +1 more source

A Reconfigurable MIMO/UWB MIMO Antenna for Cognitive Radio Applications

IEEE Access, 2019
A novel multi-mode frequency reconfigurable MIMO and an ultrawideband (UWB) MIMO antenna design for cognitive radio applications is proposed in this paper.
Xiongwen Zhao, Sharjeel Riaz, Suiyan Geng   +2 more
doaj   +1 more source

Strong Nonlinear Capacitive Behavior of a GaN/AlN Varactor Based on Dual-Schottky Junctions With a Cutoff Frequency of 1.5 THz

IEEE Access
In this work, a novel GaN/AlN dual-Schottky junction varactor based on the recess electrode structure of a metal-2DEG-metal contact is prepared, and the capacitance and series resistance are significantly reduced due to the removal of the barrier between
Yuhuan Jiang, Tao Guo, Kai Wang, Jielong Liu, Chengcheng Li, Qi He, Qichao Ding, Chang Wu   +7 more
doaj   +1 more source

Wideband reconfigurable entire Ku‐band metasurface beam‐steerable reflector for satellite communications

IET Microwaves, Antennas & Propagation, 2019
A novel reconfigurable metasurface beam‐steerable reflector for satellite communication which covers the entire Ku‐band, and supports 300 MHz bandwidth, is suggested in this work. The reflector is based on a new type of electromagnetic bandgap.
David Rotshild, Amir Abramovich
doaj   +1 more source

A D-Band Phased-Array Chain Based on a Tunable Branchline Coupler and a Digitally Controlled Vector Modulator

IEEE Journal of Microwaves
Wireless communication and sensing applications seek higher frequencies to enable higher data rates or more precise localization using a wider modulation bandwidth. Particularly, 6G and autonomous driving research projects focus on the D-band.
Jonathan Bott, Florian Vogelsang, Nils Pohl   +2 more
doaj   +1 more source

X-Shaped Dual-Band Slot Antenna with Simultaneous Pattern Diversity and Frequency Tuning. [PDF]

Sensors (Basel)
Cho Y, Sung Y.
europepmc   +1 more source

A scalable UWB-to-reconfigurable MIMO filtenna with single-varactor tuning and enhanced isolation for adaptive 5G and cognitive radio systems. [PDF]

Sci Rep
Fouda HS, Hamoud AS, Attia MA.
europepmc   +1 more source

Miniaturized RF reconfigurable bandpass filter with dynamic wideband frequency and constant bandwidth tuning capability. [PDF]

Sci Rep
Sazid M, Agrawal N, Gautam AK, Nagar MR.
europepmc   +1 more source

A Compact L-Band Reconfigurable Dual-Mode Patch Filter. [PDF]

Micromachines (Basel)
Sheta AF, Alkanhal MAS, Elshafiey I.
europepmc   +1 more source

Topology Design of Reconfigurable Intelligent Metasurfaces Based on Equivalent Circuit Model. [PDF]

Micromachines (Basel)
Xu J, Zhu C, Pan Y, Zhang H, Wu C, Li H.
europepmc   +1 more source