Results 11 to 20 of about 726,451 (313)
Probing Live PN Junctions with Terahertz Waves
, 2023 It is known that the reflectivity of semiconductor materials at terahertz frequencies is sensitive to changes in free carriers. This phenomenon has been rigorously studied with semiconductor wafers and offline semiconductor devices.
Lees, H. +3 more
core +1 more source
Active odd-mode-metachannel for single-conductor systems
Opto-Electronic Advances, 2022 Although tremendous efforts have been devoted to investigating planar single-conductor circuits, it remains challenging to provide tight confinement of electromagnetic field and compatibility with active semi-conductor components such as amplifier ...
Pei Hang He +7 more
doaj +1 more source
Design of high-performance millimeter wave and sub-millimeter wave quasi-optical isolators and circulators [PDF]
, 2007 Faraday rotators using permanently magnetized ferrite materials are used to make quasi-optical isolators and circulators at millimeter wave and sub-millimeter wave frequencies that have far higher performance than their waveguide equivalents.
Goy, P +7 more
core +2 more sources
Ultra-Broadband Directional Couplers Using Microstrip with Dielectric Overlay in Millimeter-Wave Band [PDF]
, 2011 Nowadays, millimeter-wave systems are being a key factor to develop wide band applications. In this paper, a directional coupler in millimeter-wave band using dielectric overlay is presented.
Alonso Montes, José I. +4 more
core +1 more source
Millimeter-wave achromatic half-wave plate [PDF]
Applied Optics, 2005 In print - Applied Optics, 14 pages, 7 ...
Hanany, S. +5 more
openaire +3 more sources
Two-Dimensional Beam Steering Based on Compact Programmable Coding Metasurface
Applied Sciences, 2022 A programmable coding metasurface provides unprecedented flexibility to manipulate electromagnetic waves dynamically. By controlling the peculiarity of subwavelength artificial atoms, devices with metasurfaces perform various functionalities.
Fei Yang +6 more
doaj +1 more source
Dark matter emission from high-power millimeter waves and potential detection by coherent system
, 2021 The dark photon, one of the candidates of dark matter, can be generated from high-power millimeter waves. This paper points out possible emission of dark photons from waveguide structures in high-power microwave infrastructure and suggests potential ...
A. Miyazaki, Miyazaki, Akira,
core +1 more source
Broadband and efficient terahertz beam scanning using a 3D-printed Risley prism
, 2022 We present a Risley prism beam-scanning system for terahertz waves. The scanning system consists of two 3Dprinted prisms made of cyclic olefin copolymer (COC), which is a low loss material at terahertz frequencies.
Lees, H. +3 more
core +1 more source
Absorptive Microstrip-Fed Slot Antenna With Wide Reflectionless Band by Loading Bandstop Filter
IEEE Open Journal of Antennas and Propagation, 2021 This paper presents an absorptive microstrip-fed slot antenna with a wide reflectionless band and high radiation efficiency. The proposed antenna consists of a microstrip-fed slot antenna, a quarter-wavelength coupled-line bandstop filter (BSF), and ...
Yanqun Liu +4 more
doaj +1 more source
Nature Communications, 2023 Metasurfaces have promising potential to revolutionize a variety of photonic and electronic device technologies. However, metasurfaces that can simultaneously and independently control all electromagnetics (EM) waves’ properties, including amplitude ...
Geng-Bo Wu +6 more
doaj +1 more source