Results 61 to 70 of about 105,969 (299)
Electrically Tunable On‐Chip Topological Photonics with Integrated Carbon Nanotubes
Advanced Functional Materials, EarlyView.This work demonstrates electrically tunable on‐chip topological THz devices by integrating 2D carbon nanotube (CNT) sheets with valley‐Hall photonic crystals, enabling broadband transmission modulation (71% modulation depth) and tunable narrowband filtering (0.54 GHz shift) through electrically induced thermal tuning. This advancement paves the way for
Jifan Yin +7 more
wiley +1 more source
Tunable metamaterial bandstop filter based on ferromagnetic resonance
AIP Advances, 2015 Tunable wideband microwave bandstop filters have been investigated by experiments and simulations. The negative permeability is realized around the ferromagnetic resonance frequency which can be influenced by the demagnetization factor of the ferrite ...
Qingmin Wang +3 more
doaj +1 more source
Genetic Algorithm Applied to Discrete Optimization of Band-Pass Microwave Filter
Telfor Journal, 2021 We propose a design approach for band-pass microwave filters based on optimization of discrete-valued parameters of filters using an implementation of (1 + (λ, λ)) genetic algorithm.
D. Ninković, D. Olćan
doaj +1 more source
BICEP3: a 95 GHz refracting telescope for degree-scale CMB polarization [PDF]
, 2014 BICEP3 is a 550 mm-aperture refracting telescope for polarimetry of radiation in the cosmic microwave background at 95 GHz. It adopts the methodology of BICEP1, BICEP2 and the Keck Array experiments - it possesses sufficient resolution to search for ...
Ahmed, Z. +31 more
core +1 more source
Novel microwave integrated lowpass filters
Electronics Letters, 1979 The procedure is described for synthesising Cauer Chebyshev lowpass filters of the third order as rectangular microwave integrated structures. The synthesis procedure is based on a two-mode approximation and leads to structures with very small dimensions compared with the usual realisations of such type of filters.
D'INZEO, Guglielmo +2 more
openaire +2 more sources
Multiband Switchable Microwave Absorbing Metamaterials Based on Reconfigurable Kirigami–Origami
Advanced Functional Materials, EarlyView.A reconfigurable metamaterial featuring tunable microwave‐absorbing and load‐bearing performance is proposed. Stretchable kirigami and bistable origami configurations are integrated as actuating components, and the synergistic deformation mechanisms are systematically analyzed.
Weimin Ding +7 more
wiley +1 more source
International Journal of Information and Communication Technology Research, 2014 In this paper, microwave filters were designed using dielectric layers, which were transversely located inside a partial H-plane waveguide. The proposed structure can be used to design microwave filters with arbitrary frequency response including band ...
Ali Ghajar, Habib Ghorbaninejad Foumani
doaj
Thermal Frequency Drift of 3D Printed Microwave Components
Metals, 2020 Fabrication of microwave slot array antennas and waveguide bandpass and notch filters using 3D printing has significant advantages in terms of speed and cost even for parts with high mechanical complexity.
Gregory Peter Le Sage
doaj +1 more source
Future Developments in Low Temperature Detectors for CMB and Submm Astronomy [PDF]
, 2009 We summarize the wide range of current and upcoming developments in low temperature detectors for CMB and submillimeter astronomy. We discuss work in sensor development, photon coupling and filtering architectures, and polarimetry and how these tie to ...
Aaron Miller +3 more
core +1 more source
Advanced Functional Materials, EarlyView.Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey +5 more
wiley +1 more source