Microwave Engineering Europe - November 2007 - (Page 40)

40 PRODUCT FEATURE — MIMO TEST SYSTEM RF test solution supports emerging 4x4 MIMO as well as multiple commercial standards and features leading signal analysis software Keithley Instruments has released a 4X4 MIMO (multiple-input, multipleoutput) RF test system for R&D and production testing of next generation RF communications equipment and devices. The company’s MIMO RF test system consists of its Model 2920 Vector Signal Generator (VSG) and Model 2820 Vector Signal Analyzer (VSA), Model 2895 MIMO Synchronization Unit, and powerful MIMO Signal Analysis Software. Key attributes of the system include support for 4x4 MIMO applications, support for a multitude of commercial standards, including cellular, WiMAX, and WLAN, ±1 nanosecond signal sampler synchronization, less then 1 nanosecond peak-to-peak signal sampler jitter, and less than 1 degree of peak-to-peak RF-carrier phase jitter. By allowing for tight multi-unit synchronization with these high performance measurement specifications, the system can support MIMO measurements on demanding signals such as 802.11n 40MHz WLAN MIMO and 802.16e Wave 2 Mobile WiMAX. Future product development is guaranteed through the ability to test the most complex signal structures, including WiMAX Wave 2 and 4G LTE (long term evolution) and UMB (ultra mobile broadband), with a simple software upgrade. Repeatable measurements to 6 GHz The Model 2920 VSG is available in two configurations with maximum frequencies of 4 GHz or 6 GHz and can generate signals as low as 10 MHz. An optional 80 MHz arbitrary waveform generator bandwidth with 100 MSamples of waveform memory gives users the capability of testing a vast array of commercial communications signals, including GSM, EDGE, WCDMA, cdma2000, SISO WLAN, and the industry’s most demanding 802.11n 40 MHz WLAN MIMO signal. The Model 2820 VSA comes with 40 MHz of bandwidth as standard in either a 4 GHz or 6 GHz configuration. It can test a range of signals, including GSM, EDGE, W-CDMA (uplink/downlink), and cdma2000, along with a multitude of WLAN signals, including the 802.11n 40 MHz WLAN MIMO signal in both MIMO and SISO configurations. The tight synchronization of signals and low sampler and RF carrier phase jitter featured in the MIMO RF test solution allow for highly accurate and repeatable measurements that ensure high product quality and high production yields. In addition, the Model 2820 and Model 2920 can be set up in 2-, 3-, or 4-channel configurations. These dualpurpose instruments can be used either as standalone instruments or as part of a 4X4 MIMO test system, so users don’t need to dedicate individual signal analyzer or signal generator units to a task. Precise stable alignment The Model 2895 MIMO Synchronization Unit provides highly synchronized signals to the system instruments, which allows for up to 4X4 MIMO test synchronization. This gives the system a highly precise and stable alignment between up to four signal analyzers and generators. The unit distributes common signals such as a local oscillator and common clock and precise trigger to all the instruments connected to the system and allows accurate and repeatable measurements of OFDM (orthogonal frequency-division multiplexing) MIMO signals. Signal analysis tools Keithley’s Model 280111 WLAN 802.11n MIMO Signal Analysis Software is a leading PC-based analysis tool for either single-channel or multichannel analysis of 802.11x signals. This fast and powerful software tool features an extensive measurement suite for analyzing all 802.11x signals and is also capable of supporting 4X4 MIMO channel configurations. The software user interface is easy to set up and comes with a SCPI command set to quickly and easily interface with test systems. The company’s 4X4 MIMO RF test systems are ideal for research and development engineers and scientists at WLAN and WiMAX design centers and research and development centers. In addition, test engineers involved with 3GPP cell phone production and RF power amplifier manufacturing, as well as W-CDMA base stations and other wireless connectivity solutions in defense and aerospace applications, can also take advantage of the speed, accuracy, and flexibility that these powerful test systems offer. The RF test instruments offer a future-proof alternative and are built on a nextgeneration instrument platform that uses state-ofthe-art RF and high-speed DSP technology to reduce the cost of test and shorten time to market. They provide the measurement accuracy needed to ensure high product quality and production yields and high test speed and low equipment cost needed to reduce the cost of test. www.keithley.com Microwave Engineering Europe ● November 2007 ● www.mwee.com 040_MWEE.indd 40 26/10/07 17:13:14 http://www.keithley.com http://www.mwee.com

Table of Contents Feed for the Digital Edition of Microwave Engineering Europe - November 2007

Microwave Engineering Europe - November 2007 Contents News Comment Metamaterials: Metamaterials Tackle Communications Wavelengths Microwave Components — EM tools: Microwave Component Design Easier With New EM and EDA Tools Cover Feature: RF Testing for OFDMA in LTE Base-Stations Startup Eyes Battery-Free Wireless Sensor Nets High-speed ADC Technology Paves the Way for Software Defined Radios Planning a WiMAX network: Maximising the ROI by Using Advanced Optimisation Tools Transporting Video Over Wireless Networks Ultrawideband Under the Gun Specifying the Proper SAW Filter Products Product Feature: RF Test Solution Supports Emerging 4x4 MIMO as Well as Multiple Commercial Standards Calendar

Microwave Engineering Europe - November 2007

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