Over-the-air test module and test system

Patent metadata

Field	Value
Publication number	US-11664908-B2
Application number	US-202117531344-A
Country	US
Kind code	B2
Filing date	Nov 19, 2021
Priority date	Jan 5, 2021
Publication date	May 30, 2023
Grant date	May 30, 2023

Abstract

The present disclosure relates to an over-the-air test apparatus for testing a device under test over-the-air. The test apparatus includes an antenna that is connected with a radio frequency circuit having at least three ports. A first port of the radio frequency circuit is connected with a first path that includes a connector configured to connect a signal analyzer and/or a signal generator with the over-the-air test circuit. A second port of the radio frequency circuit is connected with a second path that encompasses a detector. The second path includes an interface configured to be connected with a power meter, a signal analyzer or a feedback interface of a signal generator. Further, a test system is described.

First claim

The invention claimed is:

1. An over-the-air test apparatus for testing a device under test over-the-air, comprising: an antenna that is connected with a radio frequency module having at least three ports, wherein a first port of the radio frequency module is connected with a first path that comprises a connector configured to connect a signal analyzer and/or a signal generator with the over-the-air test apparatus, wherein a second port of the radio frequency module is connected with a second path that encompasses a detector, and wherein the second path comprises an interface configured to be connected with a power meter, a signal analyzer or a feedback interface of a signal generator.

2. The over-the-air test apparatus according to claim 1 , wherein the test apparatus is an integrated module having a housing that encompasses the radio frequency module, the first path, the second path and the detector.

3. The over-the-air test apparatus according to claim 2 , wherein the housing also encompasses the antenna.

4. The over-the-air test apparatus according to claim 1 , wherein the connector is a radio frequency connector and/or wherein the interface is a radio frequency interface.

5. The over-the-air test apparatus according to claim 4 , wherein the radio frequency connector and/or the radio frequency interface are/is established by a coaxial port.

6. The over-the-air test apparatus according to claim 1 , wherein the connector and/or the interface are/is reconnectable.

7. The over-the-air test apparatus according to claim 1 , wherein the radio frequency module includes a coupler, a splitter, a divider or a combiner.

8. The over-the-air test apparatus according to claim 1 , wherein the first path and/or the second path are/is a bidirectional path that ensures signal processing in both directions.

9. A test system for testing a device under test over-the-air, wherein the test system comprises the over-the-air test apparatus according to claim 1 and a power meter, a signal analyzer and/or a signal generator.

10. The test system according to claim 9 , wherein the test system has a first operational setting, in which a signal received via the antenna is forwarded via the radio frequency module to the first path and the second path.

11. The test system according to claim 9 , wherein the test system has a first operation mode in which the power meter is connected with the interface and the signal analyzer is connected with the connector.

12. The test system according to claim 9 , wherein the test system has a second operation mode in which the power meter is connected with the interface and the signal generator is connected with the connector.

13. The test system according to claim 9 , wherein the test system has a third operation mode in which the feedback interface of the signal generator is connected with the interface and the signal generator is connected with the connector.

14. The test system according to claim 9 , wherein the test system has a fourth operation mode in which the signal analyzer is connected with the interface and the signal generator is connected with the connector.

15. The test system according to claim 9 , wherein the test system comprises a combined signal generator and analyzer.

16. The test system according to claim 15 , wherein the interface and the connector are connected with the combined signal generator and analyzer.

17. The test system according to claim 9 , wherein the test system has a second operational setting, in which a signal to be transmitted via the antenna is combined via the radio frequency module that receives two signals via the first path and the second path.

18. The test system according to claim 9 , wherein the signal analyzer and/or the signal generator have/has a display and a processing circuit, wherein the processing circuit is configured to calculate a field strength based on information received from the test apparatus, and wherein the display is configured to indicate the calculated field strength.

Assignees

• Rohde & Schwarz

Inventors

• Gallhauser Markus
• Voss Nino
• Perndl Werner

Classifications

• H04B17/191

  Over-the-air testing · CPC title

• G01R29/10 Primary

  Radiation diagrams of antennas · CPC title

• H04B17/23

  Indication means, e.g. displays, alarms, audible means · CPC title

• H04B1/0466

  Fault detection or indication (H04B1/0483 takes precedence) · CPC title

• H04B17/11 Primary

  for calibration · CPC title