Results 91 to 100 of about 68,328 (338)

The LWA1 Radio Telescope

open access: yes, 2013
LWA1 is a new radio telescope operating in the frequency range 10-88 MHz, located in central New Mexico. The telescope consists of 258 pairs of dipole-type antennas whose outputs are individually digitized and formed into beams.
Clarke, T. E.   +12 more
core   +1 more source

Can Ti‐Based MXenes Serve as Solid Lubricants for Brake Applications? A Tribological Study

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores the first implementation of Ti‐based MXenes materials in brake pad friction composite material. The resulting composite material exhibits a 48% reduction in the wear rate; alongside significant improvements are observed for thermal and mechanical properties.
Eslam Mahmoud   +7 more
wiley   +1 more source

Filtering antenna with radiation and filtering functions for wireless applications

open access: yesJournal of Electrical Systems and Information Technology, 2017
This manuscript presents, a new 5th order Chebyshev band pass filter with 2.45 GHz center frequency and 0.1 dB equal-ripple filtering antenna are proposed.
Jagadish Baburao Jadhav   +1 more
doaj   +1 more source

Screen‐Printed Flexible Piezoelectric Force Sensor Array with Electromagnetic Interference Shielding

open access: yesAdvanced Engineering Materials, EarlyView.
This article introduces a flexible screen‐printed piezoelectric sensor array designed for low‐frequency healthcare applications such as tactile sensing and cardiovascular monitoring. The device integrates interface electronics enabling the simultaneous acquisition of up to 128 signals, along with flexible EMI shielding that significantly reduces noise ...
Joseph Faudou   +6 more
wiley   +1 more source

3-D GPR survey with a modular system: reducing positioning inaccuracies and linear noise [PDF]

open access: yes, 2011
Recently, the use of ground-penetrating radar (GPR) arrays with a large number of antenna elements in a fixed configuration has become more common. The investment needed for these systems is significant.
Verdonck, Lieven, Vermeulen, Frank
core  

Adaptive channel selection for DOA estimation in MIMO radar

open access: yes, 2017
We present adaptive strategies for antenna selection for Direction of Arrival (DoA) estimation of a far-field source using TDM MIMO radar with linear arrays. Our treatment is formulated within a general adaptive sensing framework that uses one-step ahead
Brüggenwirth, Stefan   +3 more
core   +1 more source

A Compact Planar Quasi-Yagi Antenna With Bandpass Filtering Response

open access: yesIEEE Access, 2019
A planar quasi-Yagi antenna with bandpass filtering response is presented. The quasi-Yagi antenna consists of a double-sided printed driven dipole, an offset double-sided parallel-strip line (DSPSL) director, a DSPSL reflector, and an offset DSPSL ...
Gui Liu   +3 more
doaj   +1 more source

Bimetallic (NiFe) and Trimetallic (NiFeCr) Nanoalloys from Metal Oxides Using a Microwave Hydrogen Plasma

open access: yesAdvanced Engineering Materials, EarlyView.
Bimetallic (NiFe) and trimetallic (NiFeCr) nanoalloys (NAs) are synthesized using corresponding oxide mixtures using microwave hydrogen plasma within a few milliseconds. The process simultaneously 1) reduces metal oxides to metals; 2) downsizes the particles from micrometers to nanometers; and 3) blends the metals to form NAs.
Sachin Kumar   +5 more
wiley   +1 more source

Wideband Omnidirectional Slotted Patch Antenna With Filtering Response

open access: yesIEEE Access, 2017
A wideband omnidirectional patch antenna with filtering response is investigated in this paper. The circular patch antenna is centrally fed by a probe, with its TM01, TM02, and TM03 modes simultaneously excited. Two ring slots are meticulously introduced
Tian Li Wu, Yong Mei Pan, Peng Fei Hu
doaj   +1 more source

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