GB1517583A - Frequency spectrum analysis - Google Patents

Frequency spectrum analysis

Info

Publication number
GB1517583A
GB1517583A GB26866/75A GB2686675A GB1517583A GB 1517583 A GB1517583 A GB 1517583A GB 26866/75 A GB26866/75 A GB 26866/75A GB 2686675 A GB2686675 A GB 2686675A GB 1517583 A GB1517583 A GB 1517583A
Authority
GB
United Kingdom
Prior art keywords
sine
cos
signal
signals
values
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB26866/75A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB1517583A publication Critical patent/GB1517583A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16—Spectrum analysis; Fourier analysis

Landscapes

  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Complex Calculations (AREA)
GB26866/75A 1974-06-27 1975-06-25 Frequency spectrum analysis Expired GB1517583A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US483899A US3903401A (en) 1974-06-27 1974-06-27 Spectrum analyzer using delta modulation encoding

Publications (1)

Publication Number Publication Date
GB1517583A true GB1517583A (en) 1978-07-12

Family

ID=23921952

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26866/75A Expired GB1517583A (en) 1974-06-27 1975-06-25 Frequency spectrum analysis

Country Status (6)

Country Link
US (1) US3903401A (https=)
JP (1) JPS5118581A (https=)
CA (1) CA1020278A (https=)
DE (1) DE2528591A1 (https=)
FR (1) FR2276735A1 (https=)
GB (1) GB1517583A (https=)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4486850A (en) * 1974-11-11 1984-12-04 Hyatt Gilbert P Incremental digital filter
US4551816A (en) * 1970-12-28 1985-11-05 Hyatt Gilbert P Filter display system
US4553213A (en) * 1970-12-28 1985-11-12 Hyatt Gilbert P Communication system
US5459846A (en) * 1988-12-02 1995-10-17 Hyatt; Gilbert P. Computer architecture system having an imporved memory
US4686655A (en) * 1970-12-28 1987-08-11 Hyatt Gilbert P Filtering system for processing signature signals
US4744042A (en) * 1970-12-28 1988-05-10 Hyatt Gilbert P Transform processor system having post processing
US4553221A (en) * 1970-12-28 1985-11-12 Hyatt Gilbert P Digital filtering system
US4581715A (en) * 1970-12-28 1986-04-08 Hyatt Gilbert P Fourier transform processor
US4944036A (en) * 1970-12-28 1990-07-24 Hyatt Gilbert P Signature filter system
US5053983A (en) * 1971-04-19 1991-10-01 Hyatt Gilbert P Filter system having an adaptive control for updating filter samples
GB1545784A (en) * 1975-05-14 1979-05-16 Emi Ltd Measuring arrangements for electrical currents
DE2737812C3 (de) * 1977-08-22 1985-11-21 Horst-Artur Prof. Dr.-Ing. 5860 Iserlohn Crostack Verfahren zur Frequenzanalyse von transienten (einmaligen) Schallimpulsen
FR2424669A1 (fr) * 1978-04-27 1979-11-23 Materiel Telephonique Dispositifs analyseurs numeriques de spectres
US4296374A (en) * 1979-10-11 1981-10-20 Bell Telephone Laboratories, Incorporated Wideband digital spectrometer
US4430611A (en) 1981-07-29 1984-02-07 The United States Of America As Represented By The United States Department Of Energy Frequency spectrum analyzer with phase-lock
BE892241A (fr) * 1982-02-23 1982-06-16 Dev Et D Industrialisation Des Circuit de calcul rapide de la transformee de fourier discrete d'un signal, destine notamment a un appareil de controle par courants de foucault.
JPS60105979A (ja) * 1983-11-11 1985-06-11 Hirai Akira 信号処理装置
US4730257A (en) * 1985-01-25 1988-03-08 Szeto Lai Wan M Apparatus for analyzing signals, to obtain parameters of constituents
US4901244A (en) * 1985-01-25 1990-02-13 Szeto Lai Wan M Apparatus for, and method of, analyzing signals
US5122731A (en) * 1991-02-25 1992-06-16 The United States Of America As Represented By The Administrator, National Aeronautics And Space Adnministration Method and apparatus for frequency spectrum analysis
US5668545A (en) * 1995-06-26 1997-09-16 Industrial Technology Research Institute Simplified encoding apparatus and method for pilot tone modulation in automatic-track-following
US5793323A (en) * 1996-11-25 1998-08-11 The United States Of America As Represented By The Secretary Of The Air Force Two signal monobit electronic warfare receiver
US20120071108A1 (en) * 2010-09-20 2012-03-22 Mediatek Inc. Radio Frequency Signal Control Module and Radio Frequency Signal Controlling Method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3544894A (en) * 1967-07-10 1970-12-01 Bell Telephone Labor Inc Apparatus for performing complex wave analysis
US3581199A (en) * 1967-09-01 1971-05-25 Industrial Nucleonics Corp Spectrum analyzer including sampling and scaling means
FR2116224B1 (https=) * 1970-10-29 1974-10-31 Ibm France
US3703688A (en) * 1971-04-07 1972-11-21 Bell Telephone Labor Inc Digital adaptive-to-linear delta modulated signal converter

Also Published As

Publication number Publication date
CA1020278A (en) 1977-11-01
DE2528591A1 (de) 1976-01-15
US3903401A (en) 1975-09-02
JPS5118581A (https=) 1976-02-14
FR2276735A1 (fr) 1976-01-23
FR2276735B1 (https=) 1979-02-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee