Results 1 to 10 of about 213,927 (300)

Dual band fss with fractal elements [PDF]

Electronics Letters, 1999
Experimental and computed results of a frequency selective surface (FSS) based on a certain type of fractal element are presented. The fractal element is a two iteration Sierpinski gasket dipole.
Rahmat-Samii, Y, Romeu Robert, Jordi
core   +4 more sources

Dual-Band Infrared PbS Colloidal Quantum Dot Focal Plane Array [PDF]

Nature Communications
Near-infrared and short-wave infrared dual-band detection has emerged as a pivotal enabling technology in across diverse applications spanning material identification, biological diagnostics, and machine vision.
Yunxiang Di, Kun Ba, Lingfeng Ye, Qianru Zhao, Xingyu Qi, Weiyi Tang, Hanting Wang, Yi Long, Yan Chen, Xudong Wang, Zhangcheng Huang, Shenyang Huang, Yun Tang, Tie Lin, Hong Shen, Xiangjian Meng, Hugen Yan, Qi Liu, Jianlu Wang, Junhao Chu, Ming Liu   +20 more
doaj   +2 more sources

Dual‐band electrochromic materials for energy‐saving smart windows

Carbon Neutralization, 2023
Smart windows refer to those which can dynamically modulate the transmitted light by changing their colors. Dual‐band electrochromic materials (ECMs) refer to materials that can change their colors and regulate light transmission in both visible (VIS ...
Siming Zhao, Baoshun Wang, Na Zhu, Ya Huang, Fei Wang, Run Li, Yanlong Zhao, Qinyuan Jiang, Xueke Wu, Rufan Zhang   +9 more
doaj   +2 more sources

High Efficiency Dual-Band Dual-Circularly Polarized Transmitarray Antenna [PDF]

Micromachines
A dual-band dual-circularly polarized transmitarray antenna (TA) operating in the 28/39 GHz millimeter-wave band is proposed in this article. The TA unit consists of two parts: a broadband linearly polarized (LP) receiving part and a dual-band dual ...
Tianling Zhang, Boxiang Yang, Jiayin Guo, Yuanjun Shen, Liangqin Luo, Lei Chen   +5 more
doaj   +2 more sources

Photonic Generation and Transmission of Dual-Band Dual-Chirp Microwave Waveforms at C-Band and X-Band With Elimination of Power Fading

IEEE Photonics Journal, 2021
We propose a photonic method to generate and transmit dual-band dual-chirp microwave waveforms based on a dual-polarization dual-parallel Mach-Zehnder modulator (DP-DPMZM).
Lu Wang, Tengfei Hao, Guangyi Li, Wenhui Sun, Ming Li, Ninghua Zhu, Wei Li   +6 more
doaj   +1 more source

Photonic Generation of Switchable Dual-Band Dual-Chirp Microwave Waveforms

IEEE Photonics Journal, 2022
In this article, a photonic scheme based on dual-drive dual-parallel Mach-Zehnder modulator (DD-DPMZM) to generate switchable dual-band dual-chirp microwave waveforms is proposed and experimentally demonstrated.
Shuaiquan Yu, Shuna Yang, Bo Yang, Hao Chi   +3 more
doaj   +1 more source

Dual-band single-pixel telescope [PDF]

Optics Express, 2020
Single-pixel imaging systems can obtain images from a wide range of wavelengths at low-cost compared to those using conventional multi-pixel, focal-plane array sensors, especially at wavelengths outside the visible spectrum. The ability to sense short-wave infrared radiation with single-pixel techniques extends imaging capability to adverse weather ...
Zhang, Yiwei, Gibson, Graham M., Edgar, Matthew P., Hammond, Giles, Padgett, Miles   +4 more
openaire   +2 more sources

Fingerprint Positioning Method for Dual-Band Wi-Fi Based on Gaussian Process Regression and K-Nearest Neighbor

ISPRS International Journal of Geo-Information, 2021
Since many Wi-Fi routers can currently transmit two-band signals, we aimed to study dual-band Wi-Fi to achieve better positioning results. Thus, this paper proposes a fingerprint positioning method for dual-band Wi-Fi based on Gaussian process regression
Hongji Cao, Yunjia Wang, Jingxue Bi, Meng Sun, Hongxia Qi, Shenglei Xu   +5 more
doaj   +1 more source

A Novel Dual Band Branch Line Coupler and its Application to Design a Dual Band 4 × 4 Butler Matrix

IEEE Access, 2020
A novel dual band branch line coupler (BLC) has been proposed, designed, implemented, and analyzed in this paper. A dual band 4 $\times 4$ Butler matrix (BM) has also been developed by employing the proposed BLC.
Aijaz M. Zaidi, Mirza Tariq Beg, Binod K. Kanaujia, Jugul Kishor, Karumudi Rambabu   +4 more
doaj   +1 more source

Dual-Band RFID Tag Antenna Based on the Hilbert-Curve Fractal for HF and UHF Applications [PDF]

, 2016
A novel single-radiator card-type tag is proposed which is constructed using a series Hilbert-curve loop and matched stub for high frequency (HF)/ultra high frequency (UHF) dual-band radio frequency identification (RFID) positioning applications.
Alibakhshikenari, Mohammad, Limiti, Ernesto, Naser-Moghadasi, Mohammad, Sadeghzadeh, Ramazan Ali, Virdee, Bal Singh   +4 more
core   +1 more source