# US 2018/0027434 A1 · System and method for over-the-air testing of milli-meter wave and other beamforming technologies

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- Number: US 2018/0027434 A1
- Document ID: US20180027434A1
- Status: Published application
- Kind: A1
- Application number: 15/452,115
- Filed: 2017-03-07
- Published: 2018-01-25
- Earliest claimed: 2016-07-22
- Assignees: ETS-Lindgren, Inc.
- Applicants: ETS-Lindgren Inc.
- Inventors: Michael FOEGELLE
- Web page: https://patentgrep.com/patent/US20180027434A1

## CPC

- H04W 24/06: Testing, {supervising or monitoring} using simulated traffic
- G01R 29/0814: {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}
- G01R 29/0878: {Sensors; antennas; probes; detectors (wave guide measuring sections G01R1/24)}
- G01R 29/105: {using anechoic chambers; Chambers or open field sites used therefor (test sites used for measuring on other objects than aerials G01R29/0828; wave absorbing devices H01Q17/00)}
- H04B 7/0617: {for beam forming}
- H04B 7/10: Polarisation diversity; Directional diversity
- H04B 7/0404: the mobile station comprising multiple antennas, e.g. to provide uplink diversity
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12)
- H04B: TRANSMISSION

## Abstract

A method and system for measurement of a device under test (DUT) are provided. According to one aspect, a system includes a first positioner having a first antenna and a second positioner having a second antenna. The system also includes circuitry configured to cause the first antenna to radiate a test signal to the DUT and to implement one of a probing mode and an interference mode. The probing mode causes, for each of at least one position of the first antenna, the second antenna to receive a signal from the DUT at each of the second set of positions of the second antenna. The interfering mode causes, for each of at least one position of the first antenna, the second antenna to transmit an interfering signal to the DUT at each of the second set of positions of the second antenna.

## Claims

### Claim 1

A system configured to test a device under test (DUT) via one of a plurality of testing modes, the system comprising:
a first positioner having a first antenna;
a second positioner having a second antenna;
circuitry configured to:
cause the first antenna to radiate a signal to the DUT; and
implement one of a plurality of testing modes, the plurality of testing modes including:
a probing mode which causes, for each of at least one position of the first antenna, the second antenna to receive a signal from the DUT at each of a second set of positions of the second antenna; and
an interfering mode which causes, for each of at least one position of the first antenna, the second antenna to transmit an interfering signal to the DUT at each of the second set of positions of the second antenna.

### Claim 2 (depends on 1)

The system of claim 1, wherein the circuitry further comprises at least one of receive circuitry and transmit circuitry mounted on the second positioner and configured to at least one of receive a signal from the DUT in the probing mode and transmit an interfering signal to the DUT in the interfering mode.

### Claim 3 (depends on 1)

The system of claim 1, wherein the circuitry is further configured to process information received from the DUT during one of the probing mode and the interfering mode.

### Claim 4 (depends on 1)

The system of claim 1, further comprising a third positioner having a third antenna, and wherein the circuitry is further configured to implement a second interfering mode which causes, for each of at least one position of the first antenna, the third antenna to transmit a second interfering signal to the DUT at each of a third set of positions of the third antenna.

### Claim 5 (depends on 1)

The system of claim 1, wherein the plurality of testing modes further includes a third mode which causes, for each of at least one position of the first antenna, the first antenna to transmit a first communication signal to the DUT and causes, for each of at least one position of the second antenna, the second antenna to transmit a second communication signal to the DUT in order to test a performance of the DUT.

### Claim 6 (depends on 1)

The system of claim 1, wherein, the tested DUT performance is one of beamforming ability, adjacent channel interference, and desensitization of the DUT.

### Claim 7

Equipment for testing a device under test, DUT, in one of a plurality of modes, the equipment comprising:
a first antenna;
a first positioner configured to position the first antenna about the DUT;
a first communication endpoint in electrical communication with the first antenna and configured to transmit signals to the DUT and receive signals from the DUT;
a second antenna;
second positioner configured to position the second antenna about the DUT; and
a second communication endpoint in electrical communication with the second antenna and configured to operate in one of a plurality of testing modes, the testing modes including at least one of a probing mode and an interfering mode, the second communication endpoint configured to receive in the probing mode and to transmit in the interfering mode.

### Claim 8 (depends on 7)

The equipment of claim 7, wherein:
the second positioner is a robotic arm having a plurality of joints configured to provide multiple degrees of freedom to enable variation of position of an end of the robotic arm about the DUT; and
the second antenna is mounted at an end of the second positioner.

### Claim 9 (depends on 8)

The equipment of claim 8, wherein the degrees of freedom include a distance between the end of the first positioner and the DUT.

### Claim 10 (depends on 8)

The equipment of claim 8, wherein at least one joint is configured to accommodate a cable to conduct a signal to the second antenna.

### Claim 11 (depends on 10)

The equipment of claim 10, wherein a link forming the robotic arm has a through-bore to allow routing of the cable.

### Claim 12 (depends on 7)

The equipment of claim 7, wherein the second communication endpoint is mounted on the second positioner.

### Claim 13 (depends on 7)

The equipment of claim 7, wherein a position of the first positioner is controlled by a computer.

### Claim 14 (depends on 7)

The equipment of claim 7, wherein the plurality of testing modes includes a third mode wherein the first communication endpoint is configured to transmit first communication signals to the DUT, and the second communication endpoint is configured to transmit second communication signals to the DUT in order to test performance of the DUT.

### Claim 15 (depends on 7)

The equipment of claim 7, further comprising:
a third antenna;
a third positioner configured to position the third antenna about the DUT; and
a third communication endpoint configured to at least one of transmit to the DUT and receive from the DUT.

### Claim 16

A non-transitory computer program storage medium having instructions that when executed by a processor, configure the processor to:
generate commands that cause a first positioner to move a first antenna to a determined first set of at least one position about a device under test, DUT; and
generate commands that cause a second positioner to move a second antenna to a determined second set of at least one position.

### Claim 17 (depends on 16)

The computer program storage medium of claim 16, further comprising instructions, that when executed by the processor, configure the processor to generate a command to cause a receiver to receive a signal from the DUT, via the first antenna, for each position of the first set of at least one position.

### Claim 18 (depends on 16)

The computer program storage medium of claim 16, further comprising instructions, that when executed by the processor, configure the processor to generate a command to cause a transmitter to transmit a signal to the DUT, via the first antenna, for each position of the first set of at least one position.

### Claim 19 (depends on 16)

The computer program storage medium of claim 16, further comprising instructions that when executed by the processor, configure the processor to select between modes in response to user input received by the processor:
a first mode comprising receiving a signal via the second antenna from the DUT; and
a second mode comprising transmitting an interference signal via the second antenna to the DUT.

### Claim 20 (depends on 16)

The computer program storage medium of claim 16, further comprising instructions that when executed by the processor, configure the processor to:
generate commands to cause the first positioner to position the first antenna at a first position;
generate a command to cause a transmitter to transmit via the first antenna a communication signal to the device under test, DUT; and
generate commands to cause a second positioner to position a second antenna at a plurality of positions about the DUT to probe a radiation pattern of the DUT at each of the plurality of positions of the second antenna.

### Claim 21 (depends on 16)

The computer program storage medium of claim 16, further comprising instructions that when executed by the processor, configure the processor to:
generate commands to cause the first positioner to position the first antenna at a first position;
cause a transmitter to transmit via the first antenna a communication signal to a device under test, DUT; and
cause a second positioner to position a second antenna at a plurality of positions about the DUT to radiate an interference signal to the DUT at each of the plurality of positions of the second antenna.

### Claim 22

A method for testing a device under test, DUT, in one of a plurality of modes, the method comprising:
generating commands that cause a first positioner to move a first antenna to a determined first set of at least one position about a device under test, DUT; and
generating commands that cause a second positioner to move a second antenna to a determined second set of at least one position.

### Claim 23 (depends on 22)

The method of claim 22, further comprising generating a command to cause a receiver to receive a signal from the DUT, via the first antenna, for each position of the first set of at least one position.

### Claim 24 (depends on 22)

The method of claim 22, further comprising generating a command to cause a transmitter to transmit a signal to the DUT, via the first antenna, for each position of the first set of at least one position.

### Claim 25 (depends on 22)

The method of claim 22, further comprising selecting between modes in response to user input:
a first mode comprising receiving a signal via the second antenna from the DUT; and
a second mode comprising transmitting an interference signal via the second antenna to the DUT.

### Claim 26 (depends on 22)

The method of claim 22, further comprising:
generating commands to cause the first positioner to position the first antenna at a first position;
generating a command to cause a transmitter to transmit via the first antenna a communication signal to the device under test, DUT; and
generating commands to cause a second positioner to position a second antenna at a plurality of positions about the DUT to probe a radiation pattern of the DUT at each of the plurality of positions of the second antenna.

### Claim 27 (depends on 22)

The method of claim 22, further comprising:
generating commands to cause the first positioner to position the first antenna at a first position;
causing a transmitter to transmit via the first antenna a communication signal to a device under test, DUT; and
causing a second positioner to position a second antenna at a plurality of positions about the DUT to radiate an interference signal to the DUT at each of the plurality of positions of the second antenna.