US 12,078,665 B2
Measuring assembly for detecting intermodulations
Thomas Haunberger, Bad Reichenhall (DE); and Christian Steininger, Tuntenhausen (DE)
Assigned to Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
Appl. No. 17/432,471
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Feb. 20, 2020, PCT No. PCT/EP2020/054453
§ 371(c)(1), (2) Date Aug. 19, 2021,
PCT Pub. No. WO2020/169718, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 102019104322.0 (DE), filed on Feb. 20, 2019.
Prior Publication US 2022/0146559 A1, May 12, 2022
Int. Cl. G01R 23/20 (2006.01); H04B 1/40 (2015.01); H04B 17/00 (2015.01)
CPC G01R 23/20 (2013.01) [H04B 1/40 (2013.01); H04B 17/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A measuring assembly for detecting intermodulations, the measuring assembly comprising:
a first measuring device with an output connection, wherein the first measuring device comprises a signal generation device and a signal measuring device, wherein the signal generation device of the first measuring device is designed to generate test signals and to output these at the output connection, and wherein the signal measuring device of the first measuring device is designed to measure signals that are applied at the output connection;
a second measuring device with an input connection and a signal measuring device, wherein the signal measuring device of the second measuring device is designed to measure signals that are applied at the input connection;
a directional coupler that comprises at least one first, one second, and one third connection; and
a control device,
wherein:
the output connection of the first measuring device is connected to the first connection of the directional coupler,
the second connection of the directional coupler is connected to a device under test,
the input connection of the second measuring device is connected to the third connection of the directional coupler,
the directional coupler is designed to transmit signals from the first connection to the second connection and to output them at the third connection, thereby being attenuated with a first attenuation factor, and
the directional coupler is designed to transmit signals from the second connection to the first connection and to output them at the third connection, thereby being attenuated with a second attenuation factor, wherein a value of the first attenuation factor and a value of the second attenuation factor is different, and wherein a location of an interference point, that causes the intermodulations, is detected by the control device based on the value of the first attenuation factor being different from the value of the second attenuation factor, and based on measurement values of the signal measuring device of the first measuring device and measurement values of the signal measuring device of the second measuring device.