6/10/2004 - Agilent Technologies Inc. (NYSE: A) introduced two optional enhancements that broaden bandwidth and analysis capabilities of its PSA Series high-performance spectrum analyzers for designers of WLAN, satellite communications and radar systems, as well as amplifiers for 3G wireless systems. The enhancements include a digitizer that enables signals up to 80 MHz bandwidth to be captured and digitized with unmatched precision. Internal software enables flexible, detailed evaluation of digitally modulated signals to be performed within Agilent's PSA spectrum analyzers for the first time.
80 MHz Bandwidth Digitizer
The 80 MHz bandwidth digitizer (option 122) increases the digitized bandwidth of the Agilent E4440A 26.5 GHz spectrum analyzer from 10 MHz up to 80 MHz to meet the increasing bandwidth needs of communications and radar systems. For example, WLANs currently require a measurement bandwidth of at least 20 MHz, and commercial satellite communications systems often operate in 72 MHz bandwidths. In addition, when performing ACPR (adjacent channel power ratio) testing on four W-CDMA channels, bandwidth of at least 60 MHz is required.
In addition to providing wide bandwidth capability at frequencies up to 26.5 GHz, the E4440A with option 122 provides a higher level of performance over 80 MHz than any other wideband digitizer available, with the industry's broadest dynamic range, excellent amplitude and phase response, and low phase noise and instrument noise floor. This results in an error vector magnitude (EVM) measurement capability lower than any wideband digitizer Agilent has ever offered. EVM is a key specification for modulation quality of WLAN and W-CDMA systems.
The digitizer performs a wide array of digital signal processing (DSP) functions that provide powerful, real-time analysis capabilities such as built-in calibration with real-time corrections of the I/Q data, frame trigger with fast hardware averaging, deep capture memory and arbitrary resampling with decimation. Captured signal data can then be analyzed with the Agilent 89601A VSA (vector signal analysis) software so engineers can determine the cause of even the most difficult wideband modulation problems.
Flexible Digital Modulation Analysis
The flexible digital modulation analysis measurement personality (option 241) integrates demodulation software into Agilent's PSA Series of high-performance analyzers that support a wide variety of communication formats. The flexible digital modulation analysis tool helps engineers design, troubleshoot and verify wired and wireless digital modulation schemes from non-standard, non-cellular and next-generation communication systems to the most popular cellular communication formats such as W-CDMA or GSM.
Option 241 for the PSA Series combines spectrum and digital modulation analysis capabilities up to frequencies of 50 GHz in a single box, eliminating the need for additional equipment and improving measurement accuracy by utilizing the PSA's precision RF front-end and all digital IF. In addition, option 241 provides a simple-to-use interface. For example, the summary demodulation screen displays all setup parameters in one place so users can easily change parameters for flexible modulation analysis.
Modulation analysis offered with option 241 is applicable to most digital modulation formats and can be modified to accommodate changes in digital format, filter, symbol rate and measurement interval. Engineers can also measure EVM metrics, including I/Q (magnitude, phase, frequency and offset) and amplitude droop. Display options include I/Q eye diagrams, polar vector and constellation, magnitude error versus symbol, phase error versus symbol, and EVM versus symbol.
More technical and application information about the 80 MHz bandwidth digitizer and flexible digital modulation analysis options for the PSA Series spectrum analyzers is available at www.agilent.com/find/psa. Images of the PSA enhancements are available at www.agilent.com/find/enhancedpsa_images.
U.S. Pricing and Availability
The 80 MHz bandwidth digitizer (option 122) is priced at $29,000, and the flexible digital modulation analysis measurement personality (option 241) is priced at $8,500. Both are expected to be available July 1, 2004.
About Agilent Technologies
Agilent Technologies Inc. (NYSE: A) is a global technology leader in communications, electronics, life sciences and chemical analysis. The company's 28,000 employees serve customers in more than 110 countries. Agilent had net revenue of $6.1 billion in fiscal year 2003. Information about Agilent is available on the Web at www.agilent.com.
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