Results 121 to 130 of about 36,933 (358)

RF photonics technology for phased array antenna applications [PDF]

, 2008
One of the key research topics of the Telecommunication Engineering (TE) Group at the University of Twente (UT) is RF Photonics. The aim of this field is to develop schemes that utilize the advantages of optical technology for performing RF functions in ...
Etten, W.C. van, Heideman, R.G., Hoekman, M., Leinse, A., Marpaung, D.A.I., Meijerink, A., Roeloffzen, C.G.H., Zhuang, L.   +7 more
core   +1 more source

Improving GNSS-R Sea Surface Altimetry Precision Based on the Novel Dual Circularly Polarized Phased Array Antenna Model [PDF]

, 2021
Zhen Cui, Wei Zheng, Fan Wu, Xiaoping Li, Cheng Zhu, Zongqiang Liu, Xiaofei Ma   +6 more
openalex   +1 more source

High‐Spatiotemporal‐Resolution Transparent Thermoelectric Temperature Sensor Arrays Reveal Temperature‐Dependent Windows for Reversible Photothermal Neuromodulation

Advanced Functional Materials, EarlyView.
Thermoelectric temperature sensors are developed that directly measure heat changes during optical‐based neural stimulation with millisecond precision. The sensors reveal the temperature windows for safe reversible neural modulation: 1.4–4.5 °C enables reversible neural inhibition, while temperatures above 6.1 °C cause permanent thermal damage.
Junhee Lee, Dongjo Yoon, Jungha Lee, Duhee Kim, Eunui Kim, Jong‐Hyeok Yoon, Hyuk‐Jun Kwon, Seungjun Chung, Yoonkey Nam, Hongki Kang   +9 more
wiley   +1 more source

An Efficient Beam Steerable Antenna Array Concept for Airborne Applications [PDF]

, 2014
Deployment of a satellite borne, steerable antenna array with higher directivity and gain in Low Earth Orbit makes sense to reduce ground station complexity and cost, while still maintaining a reasonable link budget.
Aliakbarian, H., Van der Westhuizen, E., Vandenbosch, G. A. E., Volskiy, V., Wiid, R., Wolhuter, R.   +5 more
core   +1 more source

Harmonizing the Pyrene and Ether Groups in Covalent Triazine Polymers for Highly Effective H2O2 Photosynthesis via One‐Step Two‐Electron Oxygen Reduction

Advanced Functional Materials, EarlyView.
The pyrene and ether groups are incorporated into the covalent triazine polymer (CTP) structure. The synergistic effect of the two functional groups endows CTP with better electron transfer, light absorption, and oxygen activation properties. An impressive apparent quantum yield (13.2% @420 nm) and a remarkable solar‐to‐chemical conversion efficiency ...
Chong Wang, Jinliang Lv, Yichun Lu, Hanfeng Ye, Xuan Zhang, Leonardo Cancellara, Nadezda Tarakina, Jiande Lin, Xin Gao, Oleksandr Savateev, Jiajia Cheng   +10 more
wiley   +1 more source

Two‐Dimensional Materials as a Multiproperty Sensing Platform

Advanced Functional Materials, EarlyView.
Various sensing modalities enabled and/or enhanced by two‐dimensional (2D) materials are reviewed. The domains considered for sensing include: 1) optoelectronics, 2) quantum defects, 3) scanning probe microscopy, 4) nanomechanics, and 5) bio‐ and chemosensing.
Dipankar Jana, Shubhrasish Mukherjee, Dmitrii Litvinov, Magdalena Grzeszczyk, Sergey Grebenchuk, Makars Šiškins, Virgil Gavriliuc, Yihang Ouyang, Changyi Chen, Yuxuan Ye, Meng Yiming, Maciej Koperski   +11 more
wiley   +1 more source

A dual frequency microstrip antenna for Ka band [PDF]

For fixed satellite communication systems at Ka band with downlink at 17.7 to 20.2 GHz and uplink at 27.5 to 30.0 GHz, the focused optics and the unfocused optics configurations with monolithic phased array feeds have often been used to provide multiple ...
Baddour, M. F., Lee, R. Q.
core   +1 more source

A Heterogeneously Integrated 256-Element 5G Phased Array: Design, Assembly, Test

IEEE Journal of Microwaves
In this paper, we present the design, assembly, and test of a heterogeneously integrated dual-polarized 256-element 5G phased array covering 24$-$ 30 GHz.
Bodhisatwa Sadhu, Arun Paidimarri, Atom O. Watanabe, Duixian Liu, Xiaoxiong Gu, Christian W. Baks, Yujiro Tojo, Yoshiharu Fujisaku, Isabel De Sousa, Yo Yamaguichi, Ning Guan, Alberto Valdes-Garcia   +11 more
doaj   +1 more source

PHASE-ONLY ADAPTIVE NULLING WITH TAGUCHIâS METHOD FOR ANTENNA ARRAY SYNTHESIS [PDF]

, 2012
Р Р Кадыров
openalex   +1 more source

An Integrated, Phase-Controlled Power Divider for Metasurface Array Antennas [PDF]

, 2022
Deepayan Banerjee, Aaron V. Diebold, David R. Smith, Michael Boyarsky   +3 more
openalex   +1 more source