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1. (WO1991008614) DEVICE GENERATING A FREQUENCY MODULATED SIGNAL OF THE 'RAMP SIGNAL' TYPE USING A SURFACE WAVE DISPERSIVE FILTER GENERATION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/008614 International Application No.: PCT/FR1990/000868
Publication Date: 13.06.1991 International Filing Date: 30.11.1990
Chapter 2 Demand Filed: 20.06.1991
IPC:
G01R 23/173 (2006.01) ,G01S 13/26 (2006.01) ,H03B 23/00 (2006.01) ,H03C 3/09 (2006.01)
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
23
Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
16
Spectrum analysis; Fourier analysis
173
Wobbulating devices similar to swept panoramic receivers
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13
Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
02
Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
06
Systems determining position data of a target
08
Systems for measuring distance only
10
using transmission of interrupted pulse modulated waves
26
wherein the transmitted pulses use a frequency- or phase-modulated carrier wave
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
B
GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
23
Generation of oscillations periodically swept over a predetermined frequency range
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
C
MODULATION
3
Angle modulation
02
Details
09
Modifications of modulator for regulating the mean frequency
Applicants:
THOMSON-CSF [FR/FR]; 51, esplanade du Général-de-Gaulle F-92800 Puteaux, FR (AllExceptUS)
CHOMIKI, Michel [FR/FR]; FR (UsOnly)
Inventors:
CHOMIKI, Michel; FR
Agent:
DESPERRIER, Jean-Louis; Thomson-CSF SCPI F-92045 Paris-La Défense Cédex 67, FR
Priority Data:
89/1588801.12.1989FR
Title (EN) DEVICE GENERATING A FREQUENCY MODULATED SIGNAL OF THE 'RAMP SIGNAL' TYPE USING A SURFACE WAVE DISPERSIVE FILTER GENERATION
(FR) DISPOSITIF GENERATEUR D'UN SIGNAL MODULE EN FREQUENCE DU GENRE ''SIGNAL DE RAMPE'' UTILISANT UNE GENERATION PAR FILTRE DISPERSIF A ONDES DE SURFACE
Abstract:
(EN) Generator producing a frequency modulated signal of the 'ramp signal' type (20) by means of SAW dispersive filter generation (19). The phase error inherent in the SAW component is corrected by a phase lock loop (22) which receives a prepositioning voltage (31) modulated by the inverse curve of this phase error. This prepositioning voltage is preloaded into a PROM memory (37).
(FR) Générateur de signal modulé en fréquence, du genre ''signal de rampe'' (20) utilisant une génération (19) par filtre dispersif SAW. L'erreur de phase inhérente au composant SAW est corrigée par une boucle à verrouillage de phase (22) qui reçoit une tension de prépositionnement (31) modulée par la courbe inverse de cette erreur de phase. Cette tension de prépositionnement est chargée à l'avance dans une mémoire PROM (37).
Designated States: JP, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: French (FR)
Filing Language: French (FR)