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Wireless test systems integrate wider signal capabilities

Posted: 14 Jul 2008 ?? ?Print Version ?Bookmark and Share

Keywords:wireless test systems? Wi-Fi? WiMAX? UWB?

LitePoint Corp. has launched three new systemsthe IQnxnplus, IQultra and IQnayfor testing four wireless standards. The IQnxnplus system offers true multistream signal capabilities for Wi-Fi and WiMAX MIMO development. IQultra, believed as the industry's first UWB error vector magnitude test systemcovers both development and manufacturing testing of UWB devices. The IQnav test system is aimed at high-volume manufacturing test of embedded GPS-equipped devices.

The IQnxnplus test systems for Wi-Fi and WiMAX MIMO development feature a modular approach to MIMO R&D testing. Each module contains its own vector signal analyzer (VSA) and vector signal generator (VSG). The system also includes a synchronizer subsystem to ensure that the modules work in lockstep. Developers can test programs on this system and then port them to a single IQmax tester for production testing.

The IQnxnplus systems are offered from 1x1 (e.g. one module and a synchronizer subsystem) to 4x4 (e.g. four modules and a synchronizer subsystem) configurations. The modules support Wi-Fi and WiMAX frequency ranges from 2.15GHz to 2.7GHz; 3.3GHz to 3.8GHz; and 4.9GHz to 6.0GHz. The included GUIsIQsignal for Wi-Fi and IQsignal for WiMAXprovide analysis and display capabilities for single, multistream and beam-forming adaptive-antenna functionality testing.

The IQultra WiMedia test system features a special-purpose VSA combined with an attenuator for UWB receive testing. The system can capture and analyze all WiMedia band groups (1 to 6) and time frequency codes (TFCs; 1-10). The new systems come with LitePoint's IQsignal for WiMedia GUI that controls the unit and supports signal analysis. The IQultra C++ software API enables users to easily create automated test programs. Available in two versionsthe IQultra-300 for triple-band capture and IQultra-100 for single-band capture, both support 3.1GHz to 10.6GHz and MB-OFDM PHY layer specification ver 1.2.

Aimed at manufacturing test of GPS-equipped devices, the multichannel IQnav enables both C/No measurements and location-fix tests to be performed in a single connection to the DUT. This saves time (up to 50 percent) compared to sequential test approaches, according to LitePoint. The IQnav is available in 1-channel and 6-channel models, both supporting L1 GPS frequencies (1575.42MHz) over a power range of -60dBm to -145dBm. The test system also features specialized trigger capabilities that support testing of assisted GPS (A-GPS), commonly used in CDMA-One and CDMA-2000 handsets.

- Gina Roos

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