Results 71 to 80 of about 4,662 (208)
Tunable transmission and harmonic generation in nonlinear metamaterials
, 2008 We study the properties of a tunable nonlinear metamaterial operating at microwave frequencies. We fabricate the nonlinear metamaterial composed of double split-ring resonators and wires where a varactor diode is introduced into each resonator so that ...
Alexander B. Kozyrev +4 more
core +1 more source
Programmable Chiral Radiation via Spin‐Decoupled Metasurface with Integrated Compound Phases
Advanced Science, Volume 13, Issue 1, 5 January 2026.A programmable spin‐decoupled metasurface integrating propagation and geometric phases enables high‐purity chiral radiation with reconfigurable emission direction. Spin‐selective radiators combined with a compound phase decoupling strategy suppress undesired components, while embedded PIN diodes allow real‐time directional control.
Lu Song +8 more
wiley +1 more source
A Scalable and Integrated Reconfigurable Intelligent Surface
Advanced Electronic Materials, Volume 12, Issue 1, 7 January 2026.A scalable X‐band reconfigurable intelligent surface is presented using one‐bit phase‐tunable unit cells with integrated FPGA control. The RIS supports fast, high‐speed reconfiguration through WiFi, LAN, and USB interfaces and can be scaled to multiple tiles. The design achieves over 20 dBi broadside gain and reliable 2D beam steering in both elevation
Zaid Akram +6 more
wiley +1 more source
Integrated-circuit balanced parametric amplifier [PDF]
, 1975 Amplifier, fabricated on single dielectric substrate, has pair of Schottky barrier varactor diodes mounted on single semiconductor chip. Circuit includes microstrip transmission line and slot line section to conduct signals.
Dickens, L. E.
core +1 more source
A 2.5 mW D‐Band Broadband Simultaneous Noise‐ and Input‐Matched InP LNA
Electronics Letters, Volume 62, Issue 1, January/December 2026.This work presents a D‐band, ultra‐low‐power, broadband two‐stage low‐noise amplifier (LNA) implemented in a 250‐nm InP DHBT process. Using a simultaneous noise and input matching technique with a gain‐boosted feedback network, the LNA achieves 6.2 dB noise figure and 27 dB gain from 130 to 155 GHz while consuming only 2.5 mW.
Sehoon Park +5 more
wiley +1 more source
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
Efficient millimeter wave 1140 GHz/ diode for harmonic power generation [PDF]
, 1967 Epitaxial gallium arsenide diode junction formed in a crossed waveguide structure operates as a variable reactance harmonic generator.
core +1 more source
IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.The study presents the design and development of a plasma‐based antenna array system for the UHF band. The system features an omnidirectional plasma antenna as its active radiator, a novel approach that has not been previously explored. Surrounding plasma reflectors form a reconfigurable array around the monopole plasma antenna for beam shaping and ...
Manisha Jha +5 more
wiley +1 more source
Millimeter-wave monolithic diode-grid frequency multiplier [PDF]
, 1990 A semiconductor diode structure useful for harmonic generation of millimeter or submillimeter wave radiation from a fundamental input wave is fabricated on a GaAs substrate.
Maserjian, Joseph
core +1 more source
Widely tunable multiband reconfigurable patch antenna for wireless applications [PDF]
, 2010 The official published version can be obtained from the link below - Copyright @ EuCAP 2010A design of a low profile reconfigurable microstrip patch antenna is presented. The antenna consists of four suppatches connected to one feed line, each sub-patch
AbuTarboush, HF +4 more
core