EP 0902895 A4 20000816 - INTERFEROMETRIC SIGNAL PROCESSING APPARATUS
Title (en)
INTERFEROMETRIC SIGNAL PROCESSING APPARATUS
Title (de)
INTERFEROMETRISCHE SIGNALVERARBEITUNGSVORRICHTUNG
Title (fr)
APPAREIL DE TRAITEMENT INTERFEROMETRIQUE DU SIGNAL
Publication
Application
Priority
- AU 9700345 W 19970530
- AU PO024296 A 19960531
Abstract (en)
[origin: WO9746890A1] An interferometric signal processing apparatus (10) producing an output signal from a first input signal (34) and a second input signal (34), said input signals (34) having substantially equal carrier frequencies, comprising: a bridge (12) having a first arm (26) and a second arm (28), each arm having a first end (30) and a second end (32), the first and second input signals (34) being input to the first end (30) of the first and second arms (26, 28), respectively; a device-under-test (36) provided the first arm (26); a carrier suppression means (14) connected to the second ends (32) of the first and second arms (26, 28) to produce a carrier-suppressed signal at its output (A); an amplifier (16) arranged to amplify said carrier-suppressed signal; and a mixing means (22, 24) responsive to the amplified carrier-suppressed signal and a carrier-dominated signal to produce the output signal; wherein the differential group delay between: the first end (30) of the first arm (26) and the output (A) of the carrier suppression means (14); and the first end (30) of the second arm (28) and the output (A) of the carrier suppression means (14) is less than or equal to 1000/fo seconds, where fo is the time-averaged mean value of the carrier frequencies of the input signals (34).
IPC 1-7
IPC 8 full level
G01B 9/02 (2006.01); G01R 27/28 (2006.01); H03D 9/04 (2006.01)
CPC (source: EP)
G01R 27/28 (2013.01); H03D 9/04 (2013.01)
Citation (search report)
- [A] DE 4300949 C1 19940526 - MAX PLANCK GESELLSCHAFT [DE]
- [A] US 4780667 A 19881025 - REESE JR ELIAS [US], et al
- [A] US 4758776 A 19880719 - GRIFFIN ERIC J [GB]
- [A] US 3622896 A 19711123 - PIRCHER GEORGE
- [A] EP 0016674 A1 19801001 - THOMSON CSF [FR]
- [A] GB 2209221 A 19890504 - LITTON SYSTEMS INC [US]
- See references of WO 9746890A1
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9746890 A1 19971211; AU 2944297 A 19980105; AU 736234 B2 20010726; AU PO024296 A0 19960627; CA 2256717 A1 19971211; EP 0902895 A1 19990324; EP 0902895 A4 20000816; JP 2000512010 A 20000912
DOCDB simple family (application)
AU 9700345 W 19970530; AU 2944297 A 19970530; AU PO024296 A 19960531; CA 2256717 A 19970530; EP 97923665 A 19970530; JP 50001298 A 19970530