Results 11 to 20 of about 4,766 (228)
Multifunctional Programmable Transmissive Metasurface with Phase and Amplitude Manipulation Capability. [PDF]
Adv Sci (Weinh)This work provides a multifunctional programmable transmissive metasurface with phase and amplitude manipulation capability in the sub‐6G band. By applying different coding strategies, the proposed metasurface can realize vortex beam generation, holographic imaging under phase coding mode, and multi‐beam forming in phase‐amplitude joint coding mode ...
Shi HT +8 more
europepmc +2 more sources
Design of Pattern Reconfigurable Patch Antenna Array Based on Reflective Phase-Shifter
International Journal of Antennas and Propagation, 2022 A circularly polarized (CP) broadside antenna array with a continuously adjustable beam is proposed and implemented. First, a reflection phase shifter with varactor diodes loaded on two output terminals of a branch directional coupler is realized.
Yuqiu Shang +4 more
doaj +1 more source
Crystals, 2022 Lately, metasurface has become an essential and promising component in implementing Intelligent Reflecting Surface (IRS) for 5G and 6G. A novel method that simplifies the ability to reconfigure the metasurface is presented in this paper.
David Rotshild +6 more
doaj +1 more source
Distortion mechanisms in varactor diode-tuned microwave filters [PDF]
, 2006 This paper examines the broadband distortion behavior in flexible filters employing varactor-diode tuning elements. Series- and parallel-resonant varactor-loaded transmission-lines, both commonly used in bandpass and bandstop microwave filters, are ...
Carey-Smith, BE, Warr, PA
core +2 more sources
Nanophotonics, 2021 We propose an ultrathin reconfigurable Mach–Zehnder interferometer (MZI) for realizing dynamic frequency and amplitude modulations of spoof surface plasmon (SSP) signal.
Cui Wen Yi +3 more
doaj +1 more source
IEEE Access, 2020 Recently, much attention has been paid to beams carrying orbital angular momentum (OAM) for radio communication, which faces a great challenge of dynamic generation of OAM with different topological charges.
Kai Guo +3 more
doaj +1 more source
An Electronically-Tunable, Flexible, and Transparent Antenna With Unidirectional Radiation Pattern
IEEE Access, 2021 In this paper, a frequency reconfigurable, conformal, durable, optically transparent, and unidirectional antenna design is demonstrated for the first time.
Abu Sadat Md. Sayem +4 more
doaj +1 more source
Microstrip Tunable Bandpass Filter with the Colinear Resonators
International Journal of Antennas and Propagation, 2013 This paper presents the lumped element circuit and transmission line equivalent circuit for a varactor-tuned bandpass filter. The filter consists of transmission lines, fixed capacitors, and a varactor diode.
Z. P. Wang +3 more
doaj +1 more source
Advanced Electromagnetics, 2018 This paper presents compact UWB cylindrical dielectric resonator antenna with reconfigurable band notch capability using single varactor diode. Theoretical results are achieved for the design with the range of frequencies 4-10.6 GHz.
A. S. Elkorany, S. A. Saad, D. A. Saleeb
doaj +1 more source
XOR-Logic Phase Coding Programmable Metasurface for Low Power-Consumption Systems. [PDF]
Adv Sci (Weinh)By leveraging XOR logic, the biasing‐network complexity of 2D programmable metasurfaces is reduced from m×n to m+n through efficient row‐column control. This enables versatile functions including beam deflection and beamforming, facilitating applications in wireless communications and beyond.
Zhu R +10 more
europepmc +2 more sources