Apparatus for measuring radio frequency power as well as method of analyzing a radio frequency signal

Patent metadata

Field	Value
Publication number	US-10873868-B2
Application number	US-201815999069-A
Country	US
Kind code	B2
Filing date	Aug 16, 2018
Priority date	Aug 16, 2018
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

An apparatus for measuring radio frequency power is described that comprises at least one measurement path for small bandwidth and at least one measurement path for wide bandwidth. Further, the apparatus has an analysis and measurement unit connected with the at least two measurement paths. The analysis and measurement unit is configured to process the at least one small bandwidth signal and the at least one wide bandwidth signal. Further, a method of analyzing a radio frequency signal is described.

First claim

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. An apparatus for measuring radio frequency power, comprising:
a housing;
at least two measurement paths, said at least two measurement paths having at least one measurement path for small bandwidth via which at least one small bandwidth signal is processed and at least one measurement path for wide bandwidth via which at least one wide bandwidth signal is processed, said at least two measurements paths processing different signals with regard to the bandwidth; and
an analysis and measurement unit connected with said at least two measurement paths, said analysis and measurement unit being configured to measure the power of said at least one small bandwidth signal and said at least one wide bandwidth signal,
wherein said housing houses said at least two different measurement paths, and
wherein said analysis and measurement unit is configured to indicate at least one of a too high power, a wrong attenuator setting or a wrong frequency range for said at least one measurement path for small bandwidth by comparing at least one predefined threshold value with an absolute power of said at least one small bandwidth signal and/or said at least one wide bandwidth signal.

2. The apparatus according to claim 1 , wherein said analysis and measurement unit is further configured to compare at least one predefined threshold value with a difference in power of said small bandwidth signal and said at least one wide bandwidth signal.

3. The apparatus according to claim 2 , wherein said analysis and measurement unit is configured to indicate whether or not said at least one threshold value is at least one of reached or exceeded.

4. The apparatus according to claim 1 , wherein the frequency range of said at least one measurement path for small bandwidth is tunable.

5. The apparatus according to claim 1 , wherein at least one of said at least two measurement paths is assigned to a down-converter.

6. The apparatus according to claim 1 , wherein at least one sampler is provided that is assigned to said analysis and measurement unit.

7. The apparatus according to claim 1 , wherein said analysis and measurement unit is configured to measure the signals in said at least two measurement paths in parallel or sequentially.

8. The apparatus according to claim 1 , wherein said analysis and measurement unit has at least two operation modes, the first operation mode corresponding to measuring the signals in said at least two measurement paths sequentially, the second operation mode corresponding to measuring the signals in said at least two measurement paths in parallel.

9. The apparatus according to claim 1 , wherein an adjustable attenuator is provided, said adjustable attenuator being connected with said analysis and measurement unit.

10. The apparatus according to claim 9 , wherein said adjustable attenuator is positioned in front of said at least two measurement paths.

11. The apparatus according to claim 1 , wherein said analysis and measurement unit is configured to at least one of average the power of said wide bandwidth signal and to determine the peak value of the power of said wide bandwidth signal.

12. The apparatus according to claim 1 , wherein an internal splitter is provided that is assigned to an input of the apparatus, said splitter splitting a radio frequency signal received via said input, said splitter forwarding the split signals to said at least two measurement paths.

13. The apparatus according to claim 1 , wherein a display is provided that is connected with said analysis and measurement unit so that measurement and analysis results are displayed on said display.

14. A method of analyzing a radio frequency signal, with the following steps:
receiving a radio frequency signal via a single apparatus having a housing that houses two different measurement paths;
processing said radio frequency signal received via the single apparatus so as to obtain at least one small bandwidth signal and at least one wide bandwidth signal since said at least two measurements paths process different signals with regard to the bandwidth; and
measuring the power of at least one of said at least one small bandwidth signal and said at least one wide bandwidth signal by using the single apparatus,
wherein at least one of a too high power, a wrong attenuator setting or a wrong frequency range for said at least one measurement path for small bandwidth is indicated by comparing at least one predefined threshold value with an absolute power of said at least one small bandwidth signal and/or said at least one wide bandwidth signal.

15. The method according to claim 14 , wherein at least one predefined threshold value is compared with a difference in power of said at least one small bandwidth signal and said at least one wide bandwidth signal.

16. The method according to claim 14 , wherein said radio frequency signal received is at least one of attenuated and split.

17. The method according to claim 14 , wherein said radio frequency signal received is down-converted so as to obtain said at least one small bandwidth signal.

18. The method according to claim 14 , wherein the power of said wide bandwidth signal is averaged or the peak value of the power of said high bandwidth signal is taken into account.

Assignees

• Rohde & Schwarz

Inventors

• Thraenhardt Marcel
• Braunstorfinger Thomas
• Schnattinger Georg

Classifications

• G01R23/163

  adapted for measuring in circuits having distributed constants · CPC title

• G01R21/01 Primary

  in circuits having distributed constants (G01R21/04, G01R21/07, G01R21/09, G01R21/12 take precedence) · CPC title

• H04W24/08 Primary

  Testing, {supervising or monitoring} using real traffic · CPC title