US 12,000,889 B2
Signal generation device, measurement device, and method
Benjamin Schneider, Chemnitz (DE); and Mario Guenther, Glauchau (DE)
Assigned to ROHDE & SCHWARZ GMBH CO. KG, Munich (DE)
Filed by Rohde & Schwarz GmbH & Co. KG, Munich (DE)
Filed on Jul. 5, 2022, as Appl. No. 17/857,260.
Prior Publication US 2024/0012049 A1, Jan. 11, 2024
Int. Cl. G01R 31/317 (2006.01)
CPC G01R 31/31727 (2013.01) 16 Claims
OG exemplary drawing
 
1. A signal generation device, comprising:
at least two signal generators; and
a clock source that is coupled to the at least two signal generators and that is configured to generate a clock signal and provide the clock signal to the at least two signal generators;
wherein the signal paths between the clock source and each one of the at least two signal generators are matched at least regarding the signal runtime; and
wherein the at least two signal generators are each configured to generate an output signal based on the clock signal,
wherein the signal generation device comprises:
a first signal measurement sensor for each one of the at least two signal generators, and
a first signal comparator that is coupled on the input side to each one of the first signal measurement sensors and on the output side to at least all of the at least two signal generators but one of the at least two signal generators,
wherein each one of the first signal measurement sensors is configured to measure the output signal of the respective one of the at least two signal generators,
wherein the first signal comparator is configured to compare the amplitudes of the output signals and provide a respective amplitude correction factor to each one of the at least two signal generators to which the first signal comparator is coupled to,
wherein each one of the at least two signal generators to which the first signal comparator is coupled to comprises an amplitude controller configured to control the amplitude of the respective output signal based on the amplitude correction factor; or
the signal generation device comprises:
a second signal measurement sensor for each one of the at least two signal generators, and
a second signal comparator that is coupled on the input side to each one of the second signal measurement sensors and on the output side to at least all of the at least two signal generators but one of the at least two signal generators,
wherein each one of the second signal measurement sensors is configured to measure the output signal of the respective one of the at least two signal generators,
wherein the second signal comparator is configured to compare the phases of the output signals and provide a respective phase correction factor to each one of the at least two signal generators to which the second signal comparator is coupled to,
wherein each one of the at least two signal generators to which the second signal comparator is coupled to comprises a phase controller configured to control the phase of the respective output signal based on the phase correction factor.