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Spectrum analyzer

About: Spectrum analyzer is a research topic. Over the lifetime, 12217 publications have been published within this topic receiving 101851 citations.


Papers
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Patent
13 Nov 1978
TL;DR: In this paper, a MICR waveform analyzer for reading E-13B magnetic ink characters including a digital phase lock loop to locate the character, a Normalizer to compress data and equalize ink strength dynamic range, and a waveform amplitude analyzer to identify the magnetically read character is described.
Abstract: A MICR waveform analyzer for reading E-13B magnetic ink characters including a digital phase lock loop to locate the character, a Normalizer to compress data and equalize ink strength dynamic range, and a waveform amplitude analyzer to identify the magnetically read character is described.

31 citations

Journal ArticleDOI
TL;DR: In this article, an ellipsometer was constructed for use in film growth studies which require a resolution of 0.01° and a nulling time on the order of 1 sec. The polarizer and analyzer are driven by stepping motors which may be stepped in either direction by pulses sent from the control system to the motor translator.

31 citations

Book
01 Jun 1986
TL;DR: In this paper, the role of Analyzers in process control systems is discussed and the Role of Analyzer in Process Control Systems Index is presented. But, the authors do not discuss the performance evaluation of these systems.
Abstract: Chromatography Viscosity Measurement Boiling Point Measurement Flash Point Measurement Pour Point, Cloud Point and Associated Measurements Vapor Pressure Measurement Oxygen Measurement Hydrogen Sulfide and Total Sulfur Measurement Spectrometric Measurements Moisture Measurement Air Quality Monitoring Water Quality Monitoring Measurement Measurement of Octane Number Thermal Conductivity Measurement Measurement of Refractive Index Combustion Efficiency Monitoring and Control Analyzer Data Systems Sample Handling Systems Design and Installation of Analyzer Systems Calibration and Correlation Maintenance and Performance Evaluation The Role of Analyzers in Process Control Systems Index.

31 citations

Proceedings ArticleDOI
07 Aug 2002
TL;DR: An on-chip spectrum analyzer using switched-capacitor techniques is described, used for built-in testing analog circuits and its inherent synchronization facilitates the testing task saving time, power and silicon area.
Abstract: An on-chip spectrum analyzer using switched-capacitor techniques is described. This system is used for built-in testing analog circuits. The main property of the proposed architecture is its inherent synchronization, which facilitates the testing task saving time, power and silicon area. Simulations and breadboard results are presented in order to verify the main principles. The resolution of the on-chip spectrum analyzer is limited to 8 bits.

31 citations

Patent
22 Jan 1991
TL;DR: In this article, a zone marker is used to indicate the position or width of the zone marker in accordance with the movement of the center frequency or band width of a displayed narrow-band spectrum.
Abstract: Display section (2) displays, on a screen, a zone marker for indicating, on a wide-band spectrum display area, that part of a wide-band spectrum which corresponds to a selected narrow-band spectrum to be displayed, and the wide-band spectrum, as well as said narrow-band spectrum which has been enlarged. First setting section (14) changes a center frequency or a band width of said displayed narrow-band spectrum, in accordance with the change of the position or width of the zone marker. Second setting section (15) cooperating with the first setting section (14) changes the position or width of the zone marker in accordance with the movement of the center frequency or band width of the displayed narrow-band spectrum. Control section (7h) for controlling a measurement resolution and a sweep time in accordance with the magnitude of the displayed spectrum, so as to satisfy the formula: sweep time ≧ band width/(measurement resolution)².K where K = a constant.

31 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20241
2023256
2022568
2021155
2020287
2019361