Results 31 to 40 of about 8,504 (267)

A Small UWB Antenna with Dual Band-Notched Characteristics

International Journal of Antennas and Propagation, 2012
A small novel ultrawideband (UWB) antenna with dual band-notched functions is proposed. The dual band rejection is achieved by etching two C-shaped slots on the radiation patch with limited area.
J. Xu, D.-Y. Shen, G.-T. Wang, X.-H. Zhang, X.-P. Zhang, K. Wu   +5 more
doaj   +1 more source

Synthesis of flat‐top beampatterns based on simple polynomial transforms of Gaussian excitations

IET Microwaves, Antennas & Propagation, 2023
In the design of antenna arrays which require fast and robust flat‐top beam synthesis, computationally efficient methods are preferred. This feature is usually met by analytical techniques or simple optimisation procedures. On the other hand, in the flat‐
Goran Molnar, Dorian Ljubenko, Mile Šakić   +2 more
doaj   +1 more source

Design of a Metal 3D Printed Double-Ridged Horn Antenna With Stable Gain and Symmetric Radiation Pattern Over a Wide Frequency Range

IEEE Access, 2023
In this paper, we propose a metal 3D printed double-ridged horn antenna with a truncated cone feeding structure, curve-shaped cavity, and mode suppressor for a feeder of a reflector antenna.
Namkang Lee, Changhyeon Im, Seulgi Park, Hosung Choo   +3 more
doaj   +1 more source

Hyperactive ice‐binding proteins stabilize cell membranes and improve resistance to dehydration stress in Caenorhabditis elegans

FEBS Open Bio, EarlyView.
TisIBP8, a fungal‐derived hyperactive ice‐binding protein, helps Caenorhabditis elegans survive dehydration. It localizes near cell membranes, reduces cell damage, and helps maintain membrane structure during drying. These results suggest that ice‐binding proteins can protect cells from dehydration stress as well as freezing stress.
Daiki Shimose, Kotaro Ozaki, Ryohei Kuriyama, Yuka Ikemoto, Kazuhiro Mio, Yuji C. Sasaki, Tatsuya Arai, Sakae Tsuda, Yoichi Shinkai, Masahiro Kuramochi   +9 more
wiley   +1 more source

Optimal radiation pattern synthesis of mutually coupled antenna array using an efficient compensation method

IET Microwaves, Antennas & Propagation, 2021
An efficient compensation method is proposed for the reduction of mutual coupling among the elements of an antenna array using the optimum current amplitude excitation weights.
Avishek Das, Durbadal Mandal, Rajib Kar
doaj   +1 more source

Monopole Antenna with Enhanced Bandwidth and Stable Radiation Patterns Using Metasurface and Cross-Ground Structure

Sensors, 2022
In this paper, a printed monopole antenna with stable omnidirectional radiation patterns is presented for applications in ocean buoy and the marine Internet of Things (IoT).
Patrick Danuor, Kyei Anim, Young-Bae Jung   +2 more
doaj   +1 more source

Effect of terahertz irradiation on DNA damage repair in living cells

FEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno, Shota Yamazaki, Hiromichi Hoshina, Masahiko Harata   +3 more
wiley   +1 more source

Reconfigurable Radiation Pattern Antennas in mm-Waves

, 2010
Far-field radiation pattern control has strong potential in smart antennas, wireless communications and radar. Typical planned applications include multipath fading and interference mitigation, data rate and coverage enhancement, etc. For implementing these functionalities, either switch beam or reconfigurable Half-Power Beam-Width (HPBW) antennas are ...
Lafond, Olivier, Caillet, Mathieu, Fuchs, Benjamin, Himdi, Mohamed   +3 more
openaire   +3 more sources

Risk Prediction Models for Recurrence After Curative Treatment of Early‐Stage or Locally Advanced Lung Cancer: A Systematic Review

Aging and Cancer, EarlyView.
This systematic review synthesizes prognostic models for survival and recurrence in resected non‐small cell lung cancer. While many models demonstrate moderate to good discrimination, few are externally validated and reporting quality is variable, limiting clinical applicability and highlighting the need for robust, transparent model development ...
Evangeline Samuel, S. Tissera, E. Paul, J. Zalcberg, R. G. Stirling   +4 more
wiley   +1 more source

Radiation from a Millimeter-Wave Rectangular Waveguide Slot Array Antenna Enclosed by a Von Karman Radome [PDF]

Journal of the Korean Institute of Electromagnetic Engineering and Science, 2018
In this paper, electromagnetic radiation from a slot array antenna enclosed by a Von Karman radome is analyzed by using the ray tracing method and Huygens’s principle. We consider the rectangular slot array antenna and the Von Karman radome.
Jihyung Kim, Sung Chan Song, Hokeun Shin, Yong Bae Park   +3 more
doaj   +1 more source