Antenna radiation pattern compressive sensing

Patent metadata

Field	Value
Publication number	US-12095515-B2
Application number	US-202217592603-A
Country	US
Kind code	B2
Filing date	Feb 4, 2022
Priority date	Feb 4, 2022
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A method and apparatus for measuring antenna radiation patterns comprising an array of test antennas coupled to at least one transmitter and an antenna under test located proximate to the array of test antennas. A compressive sensing processor is coupled to the antenna under test and the array of test antennas to control signals emitted and received by the antenna under test and the array of test antennas. The received signals comprise either amplitude only signals or amplitude and phase signals. The compressive sensing processor processes the received signals using compressive sensing to produce an antenna radiation pattern.

First claim

The invention claimed is:

1. Apparatus for measuring antenna radiation patterns comprising:
an array of test antennas;
an antenna under test located proximate to the array of test antennas;
a compressive sensing processor coupled to the antenna under test and the array of test antennas to control signals emitted and received by the antenna under test and the array of test antennas, processing the received signals using compressive sensing and producing an antenna radiation pattern for the antenna under test, where the received signals comprises either amplitude only signals or amplitude and phase signals
wherein the array of test antennas is a spherical array.

2. The apparatus of claim 1 , wherein the array of test antennas is a sparse spherical array.

3. The apparatus of claim 1 , wherein, for received signals comprising amplitude and phase signals, the array of test antennas comprises a circular array and, for received signals comprising amplitude only signals, the array of test antennas comprises a circular array having an additional offset antenna located out of the plane of the circular array.

4. The apparatus of claim 1 , wherein, for received signals comprising amplitude and phase signals, the array of test antennas comprises a sparse circular array and, for received signals comprising amplitude only signals, the array of test antennas comprises a sparse circular array having an additional offset antenna located out of the plane of the sparse circular array.

5. The apparatus of claim 1 , wherein the antenna under test is a transmitting antenna and the array of test antennas are receiving antennas, or the antenna under test is a receiving antenna and the array of test antennas are transmitting antennas.

6. The apparatus of claim 1 , wherein the received signal has sparse data content.

7. The apparatus of claim 1 wherein the processing using compressive sensing is optimized by reducing coherence of a sensing matrix.

8. A method for measuring antenna radiation patterns comprising:
a) positioning an antenna under test proximate to an array of test antennas;
b) controlling signals emitted and received by the antenna under test and the array of test antennas, where the received signals comprise either amplitude only signals or amplitude and phase signals;
c) processing the received signals using compressive sensing; and
d) producing an antenna radiation pattern for the antenna under test from the processed received signals
wherein the array of test antennas is a spherical array.

9. The method of claim 8 , wherein the array of test antennas is a sparse spherical array and the method further comprises rotating the antenna under test after d) and repeating b), c) and d).

10. The method of claim 8 , wherein, for received signals having amplitude and phase signals, the array of test antennas is a circular array and, for received signals having amplitude only signals, the array of test antennas is a circular array having an additional offset antenna located out of the plane of the circular array, and the method further comprises rotating the antenna under test after d) and repeating b), c) and d).

11. The method of claim 8 , wherein, for received signals having amplitude and phase signals, the array of test antennas is a sparse circular array and, for received signals having amplitude only signals, the array of test antennas is a sparse circular array having an additional offset antenna located out of the plane of the circular array, and the method further comprises rotating the antenna under test after d) and repeating b), c) and d).

12. The method of claim 8 , wherein the antenna under test is a transmitting antenna and the array of test antennas are receiving antennas, or the antenna under test is a receiving antenna and the array of test antennas are transmitting antennas.

13. The method of claim 8 , wherein the received signal has sparse data content.

14. The method of claim 8 , wherein processing using compressive sensing further comprises optimizing the processing by reducing coherence of a sensing matrix.

15. Apparatus for measuring antenna radiation patterns comprising:
an array of test antennas, where the array of test antennas comprises a spherical array, a sparse spherical array, a circular array having an additional offset antenna located out of the plane of the circular array or a sparse circular array having an additional offset antenna located out of the plane of the sparse circular array;
an antenna under test located proximate to the array of test antennas;
a compressive sensing processor coupled to the antenna under test and the array of test antennas to control signals emitted and received by the antenna under test and the array of test antennas, where the received signals comprise amplitude only signals, processing the received signals using compressive sensing and producing an antenna radiation pattern for the antenna under test.

16. The apparatus of claim 15 where the antenna under test is a transmitting antenna and the array of test antennas are receiving antennas, or the antenna under test is a receiving antenna and the array of test antennas are transmitting antennas.

17. The apparatus of claim 15 where the received signal has sparse data content.

18. The apparatus of claim 15 wherein the processing using compressive sensing is optimized by reducing coherence of a sensing matrix.

Assignees

• Ccdc Army Res Laboratory
• Us Army

Inventors

• Don Michael L
• Arce Gonzalo R

Classifications

• H04B17/102 Primary

  Power radiated at antenna · CPC title

• H04B17/12

  of transmit antennas, e.g. of the amplitude or phase · CPC title

• H04B17/391

  Modelling the propagation channel · CPC title

• G01R29/0814

  Field measurements related to measuring influence on or from apparatus, components or humans (EMC, EMI and similar testing in general G01R31/001), e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning · CPC title

• G01R29/10

  Radiation diagrams of antennas · CPC title