scholarly journals High-Speed Distance Relaying of the Entire Length of Transmission Lines Without Signaling

2020 ◽  
Vol 35 (4) ◽  
pp. 1949-1959
Author(s):  
Sadegh Azizi ◽  
Mingyu Sun ◽  
Gaoyuan Liu ◽  
Marjan Popov ◽  
Vladimir Terzija
Keyword(s):  
Transmission Lines ◽  
High Speed ◽  
Entire Length ◽  
Distance Relaying

scholarly journals Issues on High Speed Relaying in High Voltage Transmission lines using Full Cycle Discrete Fourier Transform and Phaselet Transform

2019 ◽  
Vol 9 (2) ◽  
pp. 4953-4958
Keyword(s):  
Fourier Transform ◽  
Discrete Fourier Transform ◽  
High Voltage ◽  
Transmission Lines ◽  
High Speed ◽  
Response Times ◽  
Test System ◽  
Test Cases ◽  
Distance Relaying ◽  
Operational Issues

Now-a-days Phaselet Transform based distance relaying scheme is being proposed in the literature for high speed relaying in high voltage lines to obtain response times less than one quarter cycle. Phaselets are gaining importance due to their better transient response compared to Full Cycle Discrete Fourier Transform (FCDFT) during dynamic situations. But there are few operational issues with phaselets that have to be observed closely. In this paper, a single end feed test system with phaselet/FCDFT was simulated in MATLAB platform with various test cases. Then the performance of phaselet based distance relaying scheme is compared with the conventional Full Cycle Discrete Fourier Transform. Results are reported in this paper.

Towards a PCB production floor metric for go/no go testing of lossy high speed transmission lines

Circuit World ◽  
2008 ◽  
Vol 34 (4) ◽  
pp. 38-47 ◽  
Author(s):  
Brandon Gore ◽  
Richard Mellitz ◽  
Jeff Loyer ◽  
Martyn Gaudion ◽  
Jean Burnikell ◽  
...  
Keyword(s):  
Transmission Lines ◽  
High Speed

High-power InAlAs/InGaAs Schottky barrier photodiodes for analog microwave signal transmission

2022 ◽  
Vol 43 (1) ◽  
pp. 012302
Author(s):  
K. S. Zhuravlev ◽  
A. L. Chizh ◽  
K. B. Mikitchuk ◽  
A. M. Gilinsky ◽  
I. B. Chistokhin ◽  
...  
Keyword(s):  
Schottky Barrier ◽  
Transmission Lines ◽  
High Power ◽  
High Speed ◽  
Signal Transmission ◽  
Mesa Structure ◽  
Microwave Characterization ◽  
Absorbing Layer ◽  
Analog Transmission

Abstract The design, manufacturing and DC and microwave characterization of high-power Schottky barrier InAlAs/InGaAs back-illuminated mesa structure photodiodes are presented. The photodiodes with 10 and 15 μm mesa diameters operate at ≥40 and 28 GHz, respectively, have the output RF power as high as 58 mW at a frequency of 20 GHz, the DC responsivity of up to 1.08 A/W depending on the absorbing layer thickness, and a photodiode dark current as low as 0.04 nA. We show that these photodiodes provide an advantage in the amplitude-to-phase conversion factor which makes them suitable for use in high-speed analog transmission lines with stringent requirements for phase noise.

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