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Small-Diameter Tube Wall Damage-Detection Method Based on TE01 Mode Microwave

open access: yesSensors, 2022
Accidents occur frequently in urban gas pipelines, and pipeline damage detection is an important means of ensuring pipeline safety. Aiming at the problem that the small diameter pipeline is difficult to detect, this paper proposes a detection method for ...
Meng Shi   +3 more
doaj   +1 more source

Graphene based microstrip patch antenna on photonic crystal substrate for 5G application

open access: yesFrontiers in Materials, 2022
One of the strongest and thinnest substances known to exist is graphene. It can be efficiently used for antenna fabrication and significant benefits can be analyzed such as size miniaturization, gain and return loss enhancement, flexibility and increase ...
Chandan Kumar   +3 more
doaj   +1 more source

Design of a 470 MHz band IoT antenna for a handheld terminal

open access: yesDianzi Jishu Yingyong, 2021
Many handheld terminal devices require a light and compact receiving and transmitting antenna. FPC antennas are popular among designers because of their light weight and thin thickness. In order to obtain an antenna with suitable size, bandwidth and gain,
Sun Nan   +6 more
doaj   +1 more source

Online Detection of Vacuum Level of Circuit Breaker Based on Terahertz Wave Return Loss

open access: yesJournal of Harbin University of Science and Technology, 2022
For the online detection of vacuum degree in circuit breaker interrupter chamber, based on the principle of terahertz detection technology, the method of online detection of vacuum degree in circuit breaker using terahertz wave return loss is adopted ...
LUO Hong-hong   +3 more
doaj   +1 more source

Design, Fabrication and Measurement of Radio Frequency Micro-Electro-Mechanical Systems

open access: yesIEEE Open Journal of Nanotechnology, 2023
This article describes the fabrication and experimental results of a novel step structure Radio Frequency Microelectromechanical system (RF MEMS) switch integrated with a circular patch antenna.
Girija Sravani Kondavitee   +5 more
doaj   +1 more source

Broadband Three-Section Branch-Line Coupler Realized by Ridge Gap Waveguide Technology From 12 to 20 GHz

open access: yesIEEE Access, 2023
The novel ridge-gap waveguide (RGW) technology which uses an entire metal structure has various advantages at high frequencies, such as broad bandwidth, low loss, low sensitivity to manufacturing errors, and uncomplicated integration with passive and ...
Parisa Mahdavi   +2 more
doaj   +1 more source

A Study of a Microstrip Patch Antenna With a Drilled Through-Holes Array Structure Based on the Line Source Analysis Method

open access: yesFrontiers in Physics, 2020
A novel periodic photonic crystal structure with through-holes drilled by a 4 × 7 array based on the line source analysis method was proposed in this paper to improve the gain and radiation of the microstrip antenna.
Zhendong Ding, Dan Zhang, Chunyu Ma
doaj   +1 more source

Empirical analysis of microstrip patch antenna for different substrate materials and shapes using aperture coupled technique

open access: yesРадіоелектронні і комп'ютерні системи, 2022
The dielectric material used as a substrate and the shapes of the patches play an important role in the performance of bandwidth, return loss, and gain of the microstrip patch antenna.
Prapti R. Pandya   +2 more
doaj   +1 more source

Design of 400 Gbit/s QSFP-DD SR8 Optical Transceiver Module

open access: yesGuangtongxin yanjiu, 2022
With the full deployment of 5th generation mobile communication network, the optical communication industry has entered the stage of comprehensive and rapid development.
Jia-hui PENG   +5 more
doaj   +1 more source

Manganese and Zinc Spinel Ferrites Blended with Multi-Walled Carbon Nanotubes as Microwave Absorbing Materials

open access: yesAerospace, 2017
Magnetic and dielectric materials can be blended to enhance absorption properties at microwave frequencies, although the materials may have relatively weak attenuation capabilities by themselves.
Ahmet Teber   +7 more
doaj   +1 more source

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