Shielded enclosure for testing wireless communication devices
US6657214B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2000 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Sep 28, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/29
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A test system having a shielded enclosure and common air interface for testing the transmit and receive functionality of wireless communication devices such as mobile phones. A test system according to the present invention provides improved fault coverage by permitting robust testing of the entire signal path of a wireless device, including the antenna structure. In one embodiment of the invention, an RF-shielded enclosure having a test chamber is provided. The structure of the shielded enclosure blocks ambient RF energy from entering the test chamber and interfering with testing operations. The shielded enclosure may be lined with an RF absorbing material to improve test repeatability. A novel test antenna structure is disposed in the test chamber for wirelessly communicating test signals to a device under test. The test antenna is designed to maximize coupling with the antenna(s) of one or more types of wireless devices, while also minimizing variations in test measurements that might result from the particularized location of batteries or processing circuitry within such devices. The test antenna is coupled to an RF connector that provides a connection point for an external tes…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.