Results 41 to 50 of about 71,451 (303)

RF Performance of Layer-Structured Broadband Passive Millimeter-Wave Imaging System

International Journal of Antennas and Propagation, 2016
Low profile and simple configuration are advantageous for RF module in passive millimeter-wave imaging system. High sensitivity over broad operation bandwidth is also necessary to detect right information from weak signal.
Kunio Sakakibara, Kunihiko Ohkawa, Yutaka Aoki, Nobuyoshi Kikuma   +3 more
doaj   +1 more source

Hybrid Plasmonic Waveguide Fed Broadband Nano-antenna for Nanophotonic Applications

, 2014
In this paper, we propose a novel hybrid plasmonic waveguide fed broadband optical patch nano-antenna for nanophotonic applications. Through full wave electromagnetic simulation, we demonstrated our proposed antenna to radiate and receive signal at all ...
Chowdhury, Arshad M., Khalil, Md Ibrahim, Rahman, Atiqur, Saad-Bin-Alam, Md   +3 more
core   +1 more source

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

Advanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong, William D. J. Tremlett, Lucy Hart, Beier Hu, Zhuoran Qiao, Patipan Sukpoonprom, Sarah Fearn, Edoardo Angela, Matilde Brunetta, Demosthenes C. Koutsogeorgis, Nikolaos Kalfagiannis, Davide Nodari, Martyn A. McLachlan, Piers R. F. Barnes, Artem A. Bakulin, Nicholas J. Long, Nicola Gasparini   +16 more
wiley   +1 more source

The next generation textile antennas based on substrate integrated waveguide technology [PDF]

, 2014
Textile antennas for body-worn applications have some very specific requirements and needs. From an electrical engineer's point of view, good radiation characteristics and impedance matching to the active electronics are important.
Agneessens, Sam, Bozzi, Maurizio, Lemey, Sam, Moro, Riccardo, Rogier, Hendrik   +4 more
core   +2 more sources

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

A low-profile broadband crossed-dipole antenna with fractal structure and inverted-L plates

Scientific Reports, 2022
A low-profile broadband circularly polarized (CP) crossed-dipole antenna is proposed. In this antenna, the dipole uses a fractal-based structure with multiple similar patches for obtaining broadband CP radiation and impedance matching.
Guirong Feng, Tianyi Qi, Mingming Li, Jiachen Li, Xin-wei Wang, Hai-long Yang   +5 more
doaj   +1 more source

Design and Development of Ultrabroadband, High-Gain, and High-Isolation THz MIMO Antenna with a Complementary Split-Ring Resonator Metamaterial

Micromachines, 2023
The need for high-speed communication has created a way to design THz antennas that operate at high frequencies, speeds, and data rates. In this manuscript, a THz MIMO antenna is designed using a metamaterial.
Ammar Armghan, Khaled Aliqab, Meshari Alsharari, Osamah Alsalman, Juveriya Parmar, Shobhit K. Patel   +5 more
doaj   +1 more source

Broadband modified turnstile antenna Patent [PDF]

, 1970
Broadband modified turnstile antenna for use in space tracking and ...
Lemson, P. H.
core   +1 more source

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

Advanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song, Stefan Rettinger, Chengzhang Xu, Ulrich Mansfeld, Markus Retsch   +4 more
wiley   +1 more source

UHF SATCOM broadband CP antenna: moxon type bent-dipoles over a ground plane [PDF]

, 2011
In this paper, we investigate and compare two different antenna types for UHF SATCOM applications; proposed Moxon type (bent dipole) and conventional egg beater (loop) antennas in terms of antenna performance and physical size. Bent dipole and egg beater
Niver, Edip, Tekin, İbrahim, Tekin, Ibrahim   +2 more
core