5G‐NR Radio Interface – Operations on the Frequency Bands

This paper discusses the use of Maximum Correlation kurtosis deconvolution (MCKD) method as a pre-processor in fast spectral kurtosis (FSK) method in order to find the compound fault characteristics of the bearing, by enhancing the vibration signals. FSK only extracts the resonance bands which have maximum kurtosis value, but sometimes it might possible that faults occur in the resonance bands which has low kurtosis value, also the faulty signals missed due to noise interference. In order to overcome these limitations FSK used with MCKD, MCKD extracts various faults present in different resonance frequency bands; also detect the weak impact component, as MCKD also dealt with strong background noise. By obtaining the MCKD parameters like, filter length & deconvolution period, we can extract the compound fault feature characteristics.

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Dual Band Paper Substrate CPW Antenna for Wireless Applications

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.i3121.0789s319 ◽

2019 ◽

Vol 8 (9S3) ◽

pp. 605-608

Keyword(s):

Reflection Coefficient ◽

Mobile Communication ◽

Coplanar Waveguide ◽

Dual Band ◽

Antenna Feed ◽

Paper Substrate ◽

Frequency Bands ◽

Wireless Applications

In this paper, a 15* 80 sized antenna is designed over a paper substrate to test its flexible properties. The proposed antenna feed by a grounded coplanar waveguide(GCPW) is stimulated and the measured results show the operating Dual Band of the antenna cover(3.34-3.62 GHz) and (5.92-6.24 GHz) with the reflection coefficient |S11|< -15dB.These frequency bands operate over SHF bands and hence supports Fixed Mobile Communication and WLAN applications.

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DTM-9000 Adaptive Digital Modem AN/TRC-170 Radio Interface Tests. Revision 1

10.21236/ada179986 ◽

1987 ◽

Author(s):

Ram R. Voruganti ◽

Jacob Cohen

Keyword(s):

Radio Interface ◽

Digital Modem

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Subject-Independent Classification of Japanese Spoken Sentences by Multiple Frequency Bands Phase Pattern of EEG Response During Speech Perception

10.21437/interspeech.2017-854 ◽

2017 ◽

Cited By ~ 1

Author(s):

Hiroki Watanabe ◽

Hiroki Tanaka ◽

Sakriani Sakti ◽

Satoshi Nakamura

Keyword(s):

Speech Perception ◽

Multiple Frequency ◽

Phase Pattern ◽

Frequency Bands

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Terahertz Radiators Based on Si~3C-SiC MQW IMPATT Diodes

Nanoscience &Nanotechnology-Asia ◽

10.2174/2210681209666190807154014 ◽

2020 ◽

Vol 10 (4) ◽

pp. 501-506

Author(s):

Monisha Ghosh ◽

Arindam Biswas ◽

Aritra Acharyya

Keyword(s):

High Frequency ◽

Multiple Quantum Well ◽

Multiple Quantum ◽

Noise Performance ◽

Rf Power ◽

Drift Diffusion ◽

Frequency Bands ◽

Atmospheric Window ◽

Lower Noise ◽

Impatt Diodes

Aims:: The potentiality of Multiple Quantum Well (MQW) Impacts Avalanche Transit Time (IMPATT) diodes based on Si~3C-SiC heterostructures as possible terahertz radiators have been explored in this paper. Objective:: The static, high frequency and noise performance of MQW devices operating at 94, 140, and 220 GHz atmospheric window frequencies, as well as 0.30 and 0.50 THz frequency bands, have been studied in this paper. Methods: The simulation methods based on a Self-Consistent Quantum Drift-Diffusion (SCQDD) model developed by the authors have been used for the above-mentioned studies. Results: Thus the noise performance of MQW DDRs will be obviously better as compared to the flat Si DDRs operating at different mm-wave and THz frequencies. Conclusion:: Simulation results show that Si~3C-SiC MQW IMPATT sources are capable of providing considerably higher RF power output with the significantly lower noise level at both millimeter-wave (mm-wave) and terahertz (THz) frequency bands as compared to conventional flat Si IMPATT sources.

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Simple design of efficient broadband multifunctional polarization converter for X-band applications

Scientific Reports ◽

10.1038/s41598-021-81586-w ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Thi Kim Thu Nguyen ◽

Thi Minh Nguyen ◽

Hong Quang Nguyen ◽

Thanh Nghia Cao ◽

Dac Tuyen Le ◽

...

Keyword(s):

Circular Polarization ◽

Incident Angle ◽

Polarization Conversion ◽

Simple Design ◽

Cross Polarization ◽

Polarization Converter ◽

Frequency Bands ◽

X Band ◽

Cost Efficient ◽

Patch Resonators

AbstractA simple design of a broadband multifunctional polarization converter using an anisotropic metasurface for X-band application is proposed. The proposed polarization converter consists of a periodic array of the two-corner-cut square patch resonators based on the FR-4 substrate that achieves both cross-polarization and linear-to-circular polarization conversions. The simulated results show that the polarization converter displays the linear cross-polarization conversion in the frequency range from 8 to 12 GHz with the polarization conversion efficiency above 90%. The efficiency is kept higher than 80% with wide incident angle up to 45°. Moreover, the proposed design achieves the linear-to-circular polarization conversion at two frequency bands of 7.42–7.6 GHz and 13–13.56 GHz. A prototype of the proposed polarization converter is fabricated and measured, showing a good agreement between the measured and simulated results. The proposed polarization converter exhibits excellent performances such as simple structure, multifunctional property, and large cost-efficient bandwidth and wide incident angle insensitivity in the linear cross polarization conversion, which can be useful for X-band applications. Furthermore, this structure can be extended to design broadband polarization converters in other frequency bands.

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