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Detection of frequency modulation at large modulation frequencies [PDF]
The Journal of the Acoustical Society of America, 1978 Several studies have been made of the minimum frequency excursions Δf required for detection of frequency modulation, with modulation frequency fm. [E. Zwicker, Acustica, 2, 125–133 (1952) R. H. Kay and D. R. Matthews, J. Physiol. 225, 657–677 (1972)]. The graph of minimum Δf vs fm has a pronounced peak at large values of fm.
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Nonquantized frequency-modulated altimeter
Journal of Research of the National Bureau of Standards, 1953 A new principle that makes possible nonquantized altitude information so that the accurate range of altimeters can be extended to include low-level operation is described. A frequency shifter is inserted between the local oscillator and the mixer in order to remove the inherent error in conventional altimeters that makes them objectionable for low ...
H. P. Kalmus +2 more
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ACOUSTO-OPTIC FREQUENCY MODULATOR
2012 Solid-State, Actuators, and Microsystems Workshop Technical Digest, 2012 Frequency modulation of a continuous wave laser source enables generation of photons at multiple frequencies from a single pump laser. Such multiple closely spaced laser lines are important for high data rate QAM in dense-WDM networks. In this paper we present a monolithic silicon acousto-optic frequency modulator (AOFM) operating at 1.09GHz.
Tallur, Siddharth, Bhave, Sunil A.
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EnergiesIn order to reduce the negative influence of wind speed randomness and prediction error on frequency modulation, the reliability of the wind storage system was assessed effectively. In the wind storage frequency modulation system, a state of charge (SOC)
Changqing Chen, Lixiong Li
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FREQUENCY MODULATION APPROACH BASED ON SPLIT-RING RESONATOR LOADED BY VARACTOR DIODE
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2020 In the paper, an approach to frequency modulation is presented using a split-ring resonator (SRR) loaded by a varactor diode. The modulation occurs due to the continuous time variation of capacitance of the varactor diode via changing of its bias voltage
Dmytro Vovchuk +3 more
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Range-resolved interferometric signal processing using sinusoidal optical frequency modulation.
Optics Express, 2015 A novel signal processing technique using sinusoidal optical frequency modulation of an inexpensive continuous-wave laser diode source is proposed that allows highly linear interferometric phase measurements in a simple, self-referencing setup. Here, the
T. Kissinger, T. Charrett, R. Tatam
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THE PHASE REACTOR INDUCTANCE SELECTION TECHNIQUE FOR POWER ACTIVE FILTER
Electrical engineering & Electromechanics, 2016 Purpose. The goal is to develop technique of the phase inductance power reactors selection for parallel active filter based on the account both low-frequency and high-frequency components of the electromagnetic processes in a power circuit.
D. V. Tugay
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Sustainable Energy ResearchThe continuous promotion of low-carbon energy has made power electronic power systems a hot research topic at present. To help keep the grid running stable, a primary frequency modulation control model involving multiple types of power electronic power ...
Chunlin Li
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IEEE AccessThis paper presents a new software-defined vehicular radio communication system based on the DS-CDMA technology using orthogonal Walsh-Hadamard codes. The proposed radio communication system can simultaneously receive an audio stereo signal and a data ...
Radu Gabriel Bozomitu +2 more
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Amplitude modulation detection with concurrent frequency modulation [PDF]
The Journal of the Acoustical Society of America, 2016 Human speech consists of concomitant temporal modulations in amplitude and frequency that are crucial for speech perception. In this study, amplitude modulation (AM) detection thresholds were measured for 550 and 5000 Hz carriers with and without concurrent frequency modulation (FM), at AM rates crucial for speech perception.
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