Search Results - "frequency modulation"

Frequency modulation in EEG signals by Vijayakumar, V., Yusoff, Rahimi, Eswaranr, C.

“…When the Lommel functions are allowed to time-evolve and analysed using the method of instantaneous frequency, we obtain a frequency modulated harmonic spectrum. This perspective allows new insights in interpreting the nonlinear behavior of EEG signals such as chaos. …”
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Frequency modulation (FM) transmitter and receiver by Goh, Han Shin

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Differential evolution algorithm for linear frequency modulation radar signal denoising by Al-Dabbagh, Mohanad Dawood Hasan, Raja Abdullah, Raja Syamsul Azmir, Al-Dabbagh, Rawaa Dawoud Hassan, Hashim, Fazirulhisyam

“…This paper looks at the feasibility of using the differential evolution algorithm to estimate the linear frequency modulation received signal parameters for radar signal denoising. …”
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A Linear Frequency Modulated bistatic radar for on-the-ground object detection by Mohammadpoor, Mojtaba, Raja Abdullah, Raja Syamsul Azmir, Ismail, Alyani, Abas, Ahmad Fauzi

“…The system transmits wideband Linear Frequency Modulated pulses from ground-based transmitter. …”
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A bistatic linear frequency modulated radar for on-the-ground object detection by Mohammadpoor, Mojtaba, Raja Abdullah, Raja Syamsul Azmir, Salah, Asem A., Al-Dabbagh, Mohanad Dawood

“…The transmitter sends broadband linear frequency modulated chirp pulses. The reflected pulses are collected simultaneously by at least two ground-based receivers installed in different positions. …”
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Frequency modulated continuous wave radar systems for detection and tracking: a review by Ibrahimy, Abdullah Faruq Ibn, Ismail, Ahmad Fadzil, Ibrahimy, Muhammad Ibn

“…This paper proposes a method for reducing nonlinearities in the beat signal for improving range detection capability of a frequency modulated continuous wave radar system.…”
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Optimized differential evolution algorithm for linear frequency modulation radar signal denoising by Al-Dabbagh, Mohanad Dawood Hasan

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Input current interharmonics in adjustable speed drives caused by fixed-frequency modulation techniques by Soltani, H., Davari, P., Loh, P., Blaabjerg, F., Zare, Firuz

“…This paper investigates the ASD s input current interharmonic sources caused by applying symmetrical regularly sampled fixed-frequency modulation techniques on the inverter. The interharmonics generation process is precisely formulated and comparative results of different fixed-frequency modulation techniques are presented to evaluate the drive input current interharmonic components. …”
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Frequency modulation response due to the intensity modulation of fiber-grating Fabry–Perot lasers by Hisham, Hisham Kadhum, Mahdiraji, Ghafour Amouzad, Abas, Ahmad Fauzi, Mahdi, Mohd Adzir, Adikan, Faisal Rafiq Mahamd

“…A comprehensive study on the small-signal frequency modulation (FM) characteristics of a fiber-grating Fabry–Perot (FGFP) laser is numerically conducted. …”
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Configuration design and performance analysis of a fast frequency modulation optical CDMA communication system by Ahmad Hamarsheh, Mohammad Mahmoud Naji, Abdullah, Mohamad Khazani, Khatun, Sabira, Shalaby, Hossam M. H.

“…A fast frequency modulation optical code division multiple access (CDMA) communication system is proposed. …”
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Frequency modulation optimization of nonlinear optical Z-scan by high repetition rate femtosecond laser by Zainal Abidin, Mohd Shahnan, Muhammad Noor, Ahmad Shukri, Mahdi, Mohd Adzir, Abdul Rashid, Suraya

“…Nonlinear optical properties of 2- (2-hydroxyethyl)-6-(morpholin-4-yl) -1H-benzo[de]isoquinoline- 1,3(2H)- dione pigment material is investigated with frequency modulation of 250 MHz femtosecond high repetition rate (HRR) laser by an optical chopper. …”
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Frequency dependent digital compensation in DSP based FM modulators. by Tuthill, John D.

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Understanding 2D atomic resolution imaging of the calcite surface in water by frequency modulation atomic force microscopy by Tracey, J., Miyazawa, K., Spijker, P., Miyata, K., Reischl, Bernhard, Federici Canova, F., Rohl, Andrew, Fukuma, T., Foster, A.

“…Frequency modulation atomic force microscopy (FM-AFM) experiments were performed on the calcite (1014) surface in pure water, and a detailed analysis was made of the 2D images at a variety of frequency setpoints. …”
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A new modified differential evolution algorithm scheme-based linear frequency modulation radar signal de-noising by Al-Dabbagh, Mohanad Dawood, Al-Dabbagh, Rawaa Dawoud, Raja Abdullah, Raja Syamsul Azmir, Hashim, Fazirulhisyam

“…The main intention of this study was to investigate the development of a new optimization technique based on the differential evolution (DE) algorithm, for the purpose of linear frequency modulation radar signal de-noising. As the standard DE algorithm is a fixed length optimizer, it is not suitable for solving signal de-noising problems that call for variability. …”
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Realization of pratuokng (bamboo tube zither) repertoire among the Bidayuh of Annah Rais through frequency modulation synthesis sound modeling by Musib, Ahmad Faudzi

“…The 'Audio Modulation' method, especially by means of frequency modulation, empowers summing sine wave to be a structure at different amplitudes. …”
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Data-informed fuzzy measures for fuzzy integration of intervals and fuzzy numbers by Havens, Timothy C., Anderson, Derek T., Wagner, Christian

Subjects: “…Frequency modulation…”
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High-frequency modulated secondary-side self-powered isolated gate driver for full range PWM operation of SiC power MOSFETs by Garcia, Jorge, Gurpinar, Emre, Castellazzi, Alberto

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On low frequency conducted EMI: interference mitigation with focus on the DC switching harmonic in the time and frequency domains by Pena Quintal, Angel Eduardo

Subjects: “…Electromagnetic fields; Smart grids; Electromagnetic interference; Frequency modulation; Coupling effects; Electromagnetic compatibility…”
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Combined optimal pulse width modulation and pulse frequency modulation strategy for controlling switched mode DC-DC converters over a wide range of loads by Ling, B., Bingham, C., Iu, H., Teo, Kok Lay

“…This paper develops a combined optimal pulse width modulation (PWM) and pulse frequency modulation (PFM) strategy for controlling switched mode DC–DC converters. …”
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The Development of a No-Clean Solder for Radio Frequency Power Module by Sns Bukhari, Mohabattul Zaman

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