Results 31 to 40 of about 174,659 (53)

Three-Dimensional Reciprocal Invisibility Cloak with Multilayered Structure

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications
We investigate a three-dimensional (3D) reciprocal invisibility cloak with a multilayered structure based on coordinate transformation theory and complementary media. There has been considerable research on invisibility cloaks such as the external cloak,
Yanglu Xuan, Xinhe Xu
doaj   +1 more source

Diagnosis of Bearing Outer Race Faults Using a Low-Cost Non-Contact Method with Advanced Wavelet Transforms

open access: yesElektronika ir Elektrotechnika, 2019
This study analyses the vibration of Squirrel Cage Induction Motor (SCIM) with bearing faults using high-frequency signal (Handheld UWB radar) and Software Phase Locked Loop algorithm (SPLL).
Madhusudhana Reddy Barusu   +2 more
doaj   +1 more source

A passive-matched 22 GHz 2.6-dB-NF CMOS front-end with a 70-800 ps delay block

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications
This paper presents a power-efficient RF differential receiver front-end supporting transmitted-reference (TR) communication in a 90 nm CMOS technology. Particularly, it addresses the issues of designing the frontend amplifier with low-noise and passive ...
Apratim Roy
doaj   +1 more source

A New Heuristic Approach for Treating Missing Value: ABCimp

open access: yesElektronika ir Elektrotechnika, 2019
Missing values in datasets present an important problem for traditional and modern statistical methods. Many statistical methods have been developed to analyze the complete datasets.
Pinar Cihan, Zeynep Banu Ozger
doaj   +1 more source

PERFORMANSI WLAN KANTOR PUSAT PEMERINTAH KABUPATEN BADUNFG

open access: yesMajalah Ilmiah Teknologi Elektro, 2015
WLAN has been implemented widely, including in public area and government office. Badung Regency office has got benefit from the technology in applying its e- government services. However the WLAN performance in term of its QoS has not been evaluated
Linawati Linawati   +2 more
doaj  

Dual-Port Dual-Wideband Annular Slot Antenna with Stable Unidirectional Pattern

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications
This article describes the design of a dual-wideband annular slot antenna. The proposed structure has been optimized to operate in the typical bands of mobile communication systems (0.824-0.960 GHz and 1.710-2.165 GHz).
R. L. Farias   +4 more
doaj   +1 more source

Research on Ground of Penetrating Radar in the Coal Mine Detecting: A Case Study of Application in Huaibei Coal Mine

open access: yesElektronika ir Elektrotechnika, 2019
Although many geophysical techniques have been used to detect the disaster geological anomalous body in the Huaibei coal mine company, there are still many mining disasters happening. The main reason is that the coal seam is rich of water in Huaibei coal
Yongsheng Ma   +4 more
doaj   +1 more source

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