UWB antenna and BLE antenna performance test system

Patent metadata

Field	Value
Publication number	US-12487263-B2
Application number	US-202218293029-A
Country	US
Kind code	B2
Filing date	Jul 14, 2022
Priority date	Jul 27, 2021
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

Disclosed is an antenna performance test system for testing the performance of UWB and BLE antennas by reflecting a loss of a cable without changing test conditions. The disclosed antenna performance test system comprises a tester, which: responds to a first test mode setting signal so as to output, to a first antenna, a first test signal (a UWB band signal), and then generate a UWB communication performance measurement value based on a first response signal received from the first antenna and a second antenna with respect to the first test signal; and responds to a second test mode setting signal so as to output, to the first antenna, a second test signal(a BLE band signal), and then generate a BLE communication performance measurement value based on a second response signal received from the first antenna with respect to the second test signal.

First claim

The invention claimed is:

1 . An antenna performance test system, comprising:
a first antenna disposed within a shield box in which a test target terminal is disposed and configured to receive a response signal output by the test target terminal; a second antenna disposed to be spaced apart from the first antenna within the shield box and configured to receive the response signal output by the test target terminal; and a tester configured to generate a UWB communication performance measurement value of the test target terminal based on first response signals for a first test signal, which are received from the first antenna and the second antenna, after outputting the first test signal that is a UWB band signal to the first antenna in response to an input of a first test mode setting signal and to generates a BLE communication performance measurement value of the test target terminal based on a second response signal for a second test signal, which is received from the first antenna, after outputting the second test signal that is a BLE band signal to the first antenna in response to an input of a second test mode setting signal.

2 . The antenna performance test system of claim 1 , wherein the tester comprises:
a first RF port connected to the first antenna by a first RF cable; a second RF port connected to the second antenna by a second RF cable; a first signal processing module configured to output the first test signal to the first RF port in response to the input of the first test signal and then generate the UWB communication performance measurement value of the test target terminal based on the first response signal corresponding to the first test signal that is received from the first antenna and the first response signal corresponding to the first test signal that is received from the second antenna; a second signal processing module configured to output the second test signal to the first RF port in response to the input of the second test mode setting signal and then generate the BLE communication performance measurement value of the test target terminal based on the second response signal corresponding to the second test signal that is received from the first antenna; a first RF switch configured to have a first end switched to one of the first signal processing module and the second signal processing module, switch the first end to the first signal processing module in response to an input of a first switching signal, and switch the first end to the second signal processing module in response to an input of a second switching signal; and a micro controller configured to output the first test signal to the first signal processing module after outputting the first switching signal to the first RF switch in response to the input of the first test mode setting signal and to output the second test signal to the second signal processing module after outputting the second switching signal to the first RF switch in response to the input of the second test mode setting signal.

3 . The antenna performance test system of claim 2 , wherein the first signal processing module comprises:
a first signal processing element configured to output the first test signal to an output stage thereof after outputting the first switching signal in response to the input of the first test signal and to generate the UWB performance measurement value of the test target terminal based on the first response signals corresponding to the first test signal, which are input to a first input stage and a second input stage thereof, after outputting the second switching signal in response to the output of the first test signal; and a first switch configured to have a first end connected to one of the output stage and the first input stage, to form a transmission line connected to the first RF switch by switching to the output stage in response to the first switching signal of the first signal processing element, and to form a first reception line connected to the first RF switch by switching to the first input stage in response to the second switching signal of the first signal processing element, wherein the first signal processing element is configured to form a second reception line that is connected to the second input stage and the second RF port.

4 . The antenna performance test system of claim 3 , wherein the first signal processing module further comprises:
a first filter connected to a second end of the first switch and configured to output the first test signal to the first RF port through the first RF switch in response to the input of the first test signal through the first switch, to receive the first response signal corresponding to the first test signal from the first RF port through the first RF switch, and to output the first response signal to the first input stage through the first switch; and a second filter configured to receive the first response signal corresponding to the first test signal from the second RF port and to output the first response signal to the second input stage.

5 . The antenna performance test system of claim 4 , wherein the first signal processing module further comprises:
a first attenuator disposed between the first input stage of the first signal processing element and the first switch and configured to output the first response signal input through the first switch to the first input stage by attenuating the first response signal; and a second attenuator disposed between the second input stage of the first signal processing element and the second filter and configured to output the first response signal input through the second filter to the second input stage by attenuating the first response signal.

6 . The antenna performance test system of claim 4 , further comprising a third antenna disposed to be spaced apart from the first antenna and the second antenna within the shield box and configured to receive the response signal output by the test target terminal,
wherein the tester further comprises: a third RF port connected to the third antenna through a third RF cable; a third filter configured to receive the first response signal corresponding to the first test signal from the third RF port; and a second switch configured to have a first end connected to the second input stage and configured to form a first reception line configured to receive the first response signal input to the second RF port by switching to the second filter when receiving the first switching signal of the first signal processing element and to form a second reception line that receives the first response signal input to the third RF port by switching to the third filter when receiving the second switching signal of the first signal processing element.

7 . The antenna performance test system of claim 6 , wherein the first signal processing element is configured to output the first switching signal to the second switch in response to the output of the first test signal and to output the second switching signal to the second switch after receiving the first response signal received from the second antenna.

8 . The antenna performance test system of claim 6 , wherein the first signal processing module further comprises:
a first attenuator disposed between the first input stage of the first signal processing element and the first switch and configured to output the first response signal input through the first switch to the first input stage by attenuating the first response signal; and a second attenuator disposed between the second input stage of the first signal processing element and the second switch and configured to output the first response signal input through one of the second filter and the third filter to the second input sta

Assignees

• Amosense Co Ltd

Inventors

• Kim Jungryul
• Baek Hyungil
• Lee Seho
• Park Jaeil
• Park Hyunjoo
• Yi Seungyeob
• Heo Jeonggeun

Classifications

• H04B17/29

  Performance testing · CPC title

• G01R29/10

  Radiation diagrams of antennas · CPC title

• G01R29/0892

  Details related to signal analysis or treatment; presenting results, e.g. displays; measuring specific signal features other than field strength, e.g. polarisation, field modes, phase, envelope, maximum value · CPC title

• G01R29/0878

  Sensors; antennas; probes; detectors (wave guide measuring sections G01R1/24) · CPC title

• H04B17/19

  Self-testing arrangements · CPC title