Aeroflex launches new digital signal generators, vector signal analyzers

by K C Krishnadas, TechOnline India - December 19, 2011

The new additions to benchtop touch-screen RF instrument family offer high performance digital capability at a mid-range price point, the company said.

Aeroflex is adding two new S-Series digital signal generators—the SGD in both 3 GHz and 6 GHz models—and launching two new vector signal analyzers—the SVA, available in a 6 GHz and a 13 GHz model. The S-Series uses Aeroflex’s market-leading PXI technology.

The S-Series was first introduced a year ago with the launch of the SGA analog RF signal generators. 

“With these additions, the S-Series has matured into a truly integrated benchtop measurement system, with the facility to link different instruments both electronically and mechanically using Aerolock. Using the instruments together with the embedded software tools gives the user the capability to accurately generate and analyze complex wideband modulated signals to test systems and components for a wide range of applications, including mobile communications, defense, and aerospace. The SGD and SVA support generic modulation and demodulation capabilities respectively, which also makes them ideal for general purpose RF test applications,” said Hiren Joshi, product manager, Aeroflex Test Systems.

The SGD-3 and SGD-6 both feature +13 dBm output power, with a +20 dBm option and have an IQ modulator with 300 MHz RF bandwidth, which can generate wide bandwidth modulated signals. A dual channel arbitrary waveform generator (AWG) operating at up to 250 MS/s, with memory options up to 4 GB, offers faster waveform generation and the ability to store multiple signals. The embedded IQCreator waveform generation tool enables the user to set up a modulation scheme and create an AWG file using modulation templates.

The SGD has low single sideband (SSB) phase noise of -135 dBc/Hz at 1 GHz offset, and a fast frequency settling time of 100 μs, enabling accurate receiver testing with a significant reduction in measurement time and cost. The high dynamic range of the IQ modulators provides for an Adjacent Channel Leakage Ratio (ACLR) of -71 dBc on WCDMA signals, enabling the user to design and test amplifier performance to higher specifications.

 

SVA Vector Signal Analyzer features

The extended frequency range—up to 13 GHz for the SVA-13—allows the instrument to be used for analyzing second harmonic performance of signals in popular communications bands. A wide maximum instantaneous bandwidth up to 90 MHz makes it suitable for measuring and analyzing both narrow- and wide-bandwidth communication systems.

Peak signal power levels up +30 dBm can be input directly to the instrument and with a maximum sensitivity of -148 dBm/Hz, very low level signals can easily be discriminated from noise when measuring transmitter spurious outputs.

A wide range of measurement suite options are available for wireless communications test, including most 2G, 3G, 4G, WMAN, WPAN, WLAN and LTE standards, providing measurement of power, modulation quality, and spectrum parameters to the relevant standards for mobile terminal testing both in the laboratory and in production. The noise floor at 2 GHz is -138 dBc/Hz at 10 MHz offset, and, frequency settling can be achieved in 250 µs at frequencies up to 6 GHz, which makes the SVA ideal for high productivity RFIC testing.

The SVA can be synchronized and used in conjunction with either the SGD signal generator or other S-Series modules, thus reducing test setup space and offering the user a simple, integrated measurement technique.

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