System and method for testing wireless devices

• US 20060012388A1
• Filed: 07/08/2005
• Published: 01/19/2006
• Est. Priority Date: 07/13/2004
• Status: Active Grant

• Current Assignee: Arcadyan Technology Corporation (Compal Electronics Incorporated)
• Original Assignee: Arcadyan Technology Corporation (Compal Electronics Incorporated)
• Inventors: Liu, I-Ru, Wang, Po-Kang, Lin, Ching-Lang
• Granted Patent: US 7,206,549 B2
• Time in Patent Office: Days
• US Class Current: 324/754.80
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements

Abstract

The present invention disclose a system and method for testing wireless devices, by which two wireless device-under-test (DUTs) is enabled to transmit and receive signal from each other such that the two DUTs can be test simultaneously for achieving the objects of reducing time consumed for testing a batch of DUTs and also reducing the amount of procedures required for cabling the DUTs to the test equipments of the test system.

Claims

1. A test system of wireless devices, comprising:

a first wireless device-under-test, for providing a first transmitting signal;

a channel emulator, coupled to the first wireless device-under-test, for receiving the first transmitting signal and thus generating a first testing signal with respect to the first transmitting signal;

a second wireless device-under-test, coupled to the channel emulator, for receiving the first testing signal; and

a signal monitor, coupled to the first wireless device-under-test and the second wireless device-under-test, for monitoring the first transmitting signal and the first testing signal.

2. The test system of claim 1, further comprising:

a first passage device, at least having a first port coupled to the first wireless device-under-test, a second port coupled to the channel emulator, and a third port coupled to the signal monitor;

and

a second passage device, at least having a first port coupled to the second wireless device-under-test, a second port coupled to the channel emulator, and a third port coupled to the signal monitor;

3. The test system of claim 2, wherein the third port of the first passage device is coupled to the first port of the second passage device.

4. The test system of claim 1, wherein the second wireless device-under-test is capable of providing a second transmitting signal to the channel emulator for enabling the same to generate a second testing signal corresponding to the second transmitting signal and transmit the second testing signal to the first wireless device-under-test.

5. The test system of claim 4, further comprising:

a control device, coupled to the first wireless device-under-test, the second wireless device-under-test and the signal monitor, for controlling the generating of the first and the second transmitting signals and for monitoring and measuring the first and the second testing signals.

6. The test system of claim 1, wherein the channel emulator is an attenuator.

7. The test system of claim 2, wherein both the first and the second passage devices are power dividers

8. The test system of claim 2, wherein both the first and the second passage devices are couplers.

9. The test system of claim 1, wherein the signal monitor comprises a power meter.

10. The test system of claim 9, wherein the signal monitor further comprises a spectrum analyzer.

11. The test system of claim 2, wherein an attenuator is disposed between the first wireless device-under-test and the first passage device while another attenuator is disposed between the second wireless device-under-test and the second passage device.

12. A test method of wireless devices, comprising the steps of:

providing at least two wireless device-under-tests, a channel emulator and a signal monitor, whereas the channel emulator is coupled between the two wireless device-under-tests and the signal monitor is coupled to the two wireless device-under-tests;

providing a first transmitting signal to the channel emulator by one of the two wireless device-under-tests addressed as DUT #1 for enabling the channel emulator to generate a first testing signal with respect to the first transmitting signal;

transmitting the first testing signal to be received by another wireless device-under-test addressed as DUT #2;

analyzing the first transmitting signal and the first testing signal by the signal monitor;

providing a second transmitting signal to the channel emulator by the DUT #2 for enabling the channel emulator to generate a second testing signal with respect to the second transmitting signal;

transmitting the second testing signal to be received by the DUT #1; and

analyzing the second transmitting signal and the second testing signal by the signal monitor.

13. The test method of claim 12, wherein the analyzing of the first transmitting signal and the first testing signal further comprises the step of:

measuring and analyzing the maximal output power of the DUT #1.

14. The test method of claim 13, wherein the analyzing of the first transmitting signal and the first testing signal further comprises the step of:

measuring and analyzing the minimal input power and Packet Error Rate of the DUT #2.

15. The test method of claim 12, wherein the analyzing of the second transmitting signal and the second testing signal further comprises the step of:

measuring and analyzing the maximal output power of the DUT #2.

16. The test method of claim 15, wherein the analyzing of the second transmitting signal and the second testing signal further comprises the step of:

measuring and analyzing the minimal input power and Packet Error Rate of the DUT #1.

17. The test method of claim 12, wherein the providing of the first transmitting single and the generating of the first testing signal further comprises the step of:

measuring and analyzing the throughput of the DUT #1.

18. The test method of claim 17, wherein the providing of the second transmitting single and the generating of the second testing signal further comprises the step of:

measuring and analyzing the throughput of the DUT #2.

19. The test method of claim 12, wherein the analyzing of the first transmitting signal and the first testing signal further comprises the step of:

measuring and analyzing the center frequency of the first transmitting signal.

20. The test method of claim 19, wherein the analyzing of the first transmitting signal and the first testing signal further comprises the step of:

measuring and analyzing the power mask of the first transmitting signal.

21. The test method of claim 12, wherein the analyzing of the second transmitting signal and the second testing signal further comprises the step of:

measuring and analyzing the center frequency of the second transmitting signal.

22. The test method of claim 21, wherein the analyzing of the second transmitting signal and the second testing signal further comprises the step of:

measuring and analyzing the power mask of the second transmitting signal.

23. The test method of claim 20, wherein the analyzing of the first transmitting signal and the first testing signal is performed by using a spectrum analyzer to analyze the center frequency and power mask of the first transmitting signal.

24. The test method of claim 22, wherein the analyzing of the second transmitting signal and the second testing signal is performed by using a spectrum analyzer to analyze the center frequency and power mask of the second transmitting signal.