A simple method to measure phase difference between sinusoidal signals

Bertotti, Fábio Luiz; Hara, Marcos Santos; Abatti, Paulo José

doi:10.1063/1.3498897

Cited by 23 publications

(15 citation statements)

References 14 publications

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“…1,2 Attention has been recently paid in phase measurement techniques for multiple use, 3,4 as well as in specific methods for measuring phase distortion in high frequency amplifiers. 5,6 The distortion introduced by amplifiers is usually characterized in terms of amplitude to amplitude modulation (AM-AM) and amplitude to phase modulation (AM-PM).…”

Section: Introductionmentioning

confidence: 99%

A simple and reliable technique to characterize amplitude to phase modulation distortion for high-frequency amplifiers and nonlinear devices

Jauregui

Portilla

Reynoso-Hernández

et al. 2013

Review of Scientific Instruments

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This paper presents a simple and reliable measurement system for characterizing the amplitude to phase modulation (AM-PM) characteristics of high frequency amplifiers and nonlinear devices. The AM-PM measurement system is based on a null detector implemented with a double balanced mixer, and requires a voltmeter and a calibrated phase shifter. A 12 W class A radio frequency power amplifier has been designed using a GaN transistor, and the AM-PM has been measured using both the method proposed in this work and the classical method with a calibrated vector network analyzer. A good correlation between both methods is observed, which validates the proposed method.

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Section: Introductionmentioning

confidence: 99%

A simple and reliable technique to characterize amplitude to phase modulation distortion for high-frequency amplifiers and nonlinear devices

Jauregui

Portilla

Reynoso-Hernández

et al. 2013

Review of Scientific Instruments

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“…The component values used in the simulation are as follows. (11,(15)(16) Zero phase: R 0 = 0.23 Ω/km, L 0 = 5.478 mH/km, C 0 = 0.008 μF/km Positive phase: R 1 = 0.17 Ω/km, L 1 = 1.21 mH/km, C 1 = 0.00969 μF/km In Fig. 6, more details for communication models are shown, and they are combined with the distribution system for the simulation that models the synchronization between the client and the server.…”

Section: Simulation Modelmentioning

confidence: 99%

Novel and Live Tracing Methodology for Power Cables and Transformers Based on Power Line Carrier Signals

Byun¹,

Shon²,

Yang³

2018

Sensors and Materials

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The three-phase, four-cable type of power distribution lines branch into multiple circuits from local pole-or pad-mounted transformers, which makes the topology of lines complicated. A challenging issue is how to trace cables and transformers in a complicated distribution system. The proposed idea is based on a power line carrier signal, which has certain propagation characteristics along the distribution system. This novel and live tracing methodology, called the synchronized client and server method, is introduced, designed, and implemented to trace cables and transformers in the distribution system. The most difficult part of cable tracing is to isolate the signals needed for tracking from a mixture of signals routed through transformers or loads and signals transmitted directly along a test line. The algorithms needed to isolate the signals have been developed and a zero crossing sensor module is designed to ensure that the remote client and server are in phase. Simulations have been carried out to verify the proposed system using a Simulink simulator. Experiments have been conducted to verify the theoretical concepts in a test bed and a commercial building. Finally, the theory has been proved at a resolution of 0.5 ms from comparisons between the simulations and the experiments.

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“…For the distribution lines, parameters are represented as symmetric (zero, positive, negative) components [9,12,13]. Figure 9 shows architecture of cable identification systems, which is comprised of a server and a client.…”

Section: Figure 8 Sample Of Simulink Distribution System Modelmentioning

confidence: 99%