Flexible shielded antenna array for radiated wireless test
View Patent ↗Systems and methods are disclosed herein to provide shielding and radio frequency (RF) antenna coupling for communication test systems for the testing of wireless data communication devices and systems, including Multiple Input Multiple Output (MIMO) devices and systems. In accordance with one or more embodiments, a shielding and coupling system containing an array of RF antennas is disclosed that includes a flexible jacket integrated with RF shielding material that simultaneously isolates a device under test (DUT) and couples signals from the antennas of the DUT. Such a system may offer improved capabilities such as a faster and more efficient method of isolating the DUT from external interference, a more repeatable and simplified method of transmitting and receiving MIMO RF signals from DUTs having built-in antennas, and a more portable and lower cost RF test setup.
1. A combined shielding and coupling system for isolating and coupling to a wireless device under test (DUT) including at least one antenna, the system comprising:
a flat flexible jacket including a radio-frequency shielding layer for enclosing the at least one antenna of the DUT and electromagnetically shielding the DUT, the flat flexible jacket being foldable to cover the at least one antenna of the device under test;
an antenna mounted in or on the jacket for residing within an enclosure formed by the jacket and coupling with the at least one antenna of the DUT; and
a connector for connecting the antenna mounted in or on the jacket with a test system.
2. The system of claim 1 , wherein the jacket is foldable along at least one axis to enclose at least a portion of the DUT.
3. The system of claim 1 , wherein the jacket forms a pocket for receiving the DUT.
4. The system of claim 1 , further comprising a plurality of antennas mounted in or on the jacket for multiple input multiple output (MIMO) communication with the DUT.
5. The system of claim 1 , wherein the jacket includes a plurality of antennas that are combined into a single signal path.
6. The system of claim 1 , wherein the jacket includes a plurality of antennas divided into a plurality of groups, all antennas in one group being combined into a single signal path.
7. The system of claim 1 , wherein the radio-frequency shielding layer includes flaps extending from sides of a first half of the flexible jacket.
8. The system of claim 7 , wherein said flaps are foldable over sides of a second half of the flexible jacket when the flexible jacket is folded such that the first half is adjacent to the second half.
9. The system of claim 1 , wherein the jacket includes DUT power supply provisions.
10. The system of claim 1 , wherein the jacket includes thermal cooling provisions.
11. A method for shielding and testing a wireless device under test including at least one antenna, the method comprising:
connecting a test system to a connector on a flat flexible jacket including a radio frequency shielding layer and an antenna mounted in or on the jacket;
enclosing the at least one antenna of the device under test within the jacket, wherein enclosing the at least one antenna in the jacket including folding the flat flexible jacket to cover the at least one antenna of the device under test; and
wirelessly transmitting data from the antenna mounted in or on the jacket to the at least one antenna device under test.
12. The method of claim 11 , wherein enclosing at least a portion of the device under test within the jacket includes folding the jacket to enclose the device under test.
13. The method of claim 11 , wherein enclosing at least a portion of the device under test with the jacket includes placing the device under test in a pocket formed by the jacket.
14. The method of claim 11 , wherein the jacket includes a plurality of antennas mounted in or on the jacket for multiple input multiple output (MIMO) communication, and wherein wirelessly transmitting data to and receiving data from the device under test includes transmitting and receiving the data using MIMO communications.
15. The method of claim 11 , wherein the jacket includes a plurality of antennas mounted in or on the jacket, and the antennas are combined into a single signal path.
16. The method of claim 11 , wherein the jacket includes a plurality of antennas mounted in or on the jacket and that are divided into a plurality of groups, all antennas in one group being combined to form a single signal path.
17. The method of claim 11 , wherein the radio-frequency shielding layer includes flaps extending from sides of a first half of the flexible jacket.
18. The method of claim 17 , wherein said flaps are foldable over sides of a second half of the flexible jacket when the flexible jacket is folded such that the first half is adjacent to the second half.
19. The method of claim 11 , further including powering said device under test using a power supply connection accessible by the device under test through the jacket.
20. The method of claim 11 , further comprising thermally cooling the device under test using features in the jacket.