Results 61 to 70 of about 38,067 (289)
Photonic‐assisted one‐third microwave frequency divider
Electronics Letters, 2022 A microwave photonic frequency divider to produce a frequency‐divided microwave signal with its frequency that is one‐third the frequency of the input microwave signal is proposed and experimentally demonstrated.
Yu Zhang +6 more
doaj +1 more source
Impulse Radio Systems with Multiple Types of Ultra-Wideband Pulses [PDF]
, 2005 Spectral properties and performance of multi-pulse impulse radio ultra-wideband systems with pulse-based polarity randomization are analyzed. Instead of a single type of pulse transmitted in each frame, multiple types of pulses are considered, which is ...
Gezici, Sinan +3 more
core
Ultra-wideband system design, signals and coding
IET Communications, 2012 Ultra-wideband wireless technology has held much promise as a means of delivering very high speed data over short ranges; delivering a plethora of data from dense wireless sensor networks; and exploited signals for location information, amongst a number of other applications.
Allen, Ben +2 more
openaire +1 more source
Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics
Advanced Materials, EarlyView.The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades +7 more
wiley +1 more source
IEEE Access, 2020 Radio frequency (RF) channelization receiver is one of the most effective methods for processing ultra-wideband RF signals. In this paper, an ultra-wideband microwave photonic channelizer based on coherent optical frequency combs (OFCs) and image-reject ...
Bo Chen +3 more
doaj +1 more source
Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials
Advanced Materials, EarlyView.A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella +3 more
wiley +1 more source
Advanced Materials, EarlyView.Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley +1 more source
Ultra-Wideband Radio-Over-Optical Fiber Concepts, Technologies and Applications
IEEE Photonics Journal, 2010 We have developed novel ultra-wideband (UWB) radio-over-optical-fiber (UROOF) concepts and technologies for a number of important in-house applications characterized by a high data rate.
M. Ran, B. I. Lembrikov, Y. Ben Ezra
doaj +1 more source
Advanced Materials, EarlyView.A green, freeform manufacturing approach that utilizes robust aqueous two‐phase systems to create intricate and scalable photonic structures and non‐planar mechanochromic hydrogel actuators from plant‐based hydroxypropyl cellulose. This approach broadens the structural possibilities of sustainable photonic devices and mechanochromic systems, offering ...
Xiao Song +14 more
wiley +1 more source
Hierarchical Multi-Grid OMP for Ultra-Resolution Channel Estimation in THz UM-MIMO Systems
IEEE AccessIn this paper, we propose an ultra-resolution channel estimation scheme for ultra massive multiple input multiple output (UM-MIMO) systems operating in the Terahertz (THz) band.
Akram Najjar +2 more
doaj +1 more source