5G millimetre test system runs from 2Hz to 110GHz

May 13, 2021 // By Nick Flaherty
5G millimetre test system runs from 2Hz to 110GHz
Keysight's N9042B UXA X-Series runs from 2Hz to 50Ghz, with an extender and calibrator to 110GHz for 5G testing

Keysight Technologies has launched a signal analyser and frequency extender for 5G millimetre wave testing.

The N9042B UXA X-Series signal analyser operates up to 56GHz and to 110GHz with a dedicated antenna extender. This also puts the signal calibration next to the device under test, including all the cables and switches outside the analyser.

At mmWave frequencies, signals are more susceptible to impairments that affect the signal quality, such as IQ modulation errors, phase noise, distortion, signal-to-noise ratio, amplitude, and phase linearity. The N9042B UXA X-Series provides wide analysis bandwidth and deep dynamic range to help customers solve their most difficult mmWave challenges including tight design margins and timelines, complex modulation and stringent standards.

“It’s more than an analyser, it provides 11GHz of analysis bandwidth with the frequency extender to 110Ghz of carrier frequency, and even higher with more mixing and other extenders. Because the set up at higher frequencies can be very complex we have a calibrator with a very clean source   that allows the user to understand their setup up back to the instrument itself,” said  Joe Rickert, vice president and general manager of high frequency measurement R&D for Keysight’s communications solutions group.

“The base box goes up to 50GHz but with the extenders you can go seamlessly from 2Hz to 110GHz. Beyond that we have options with a Virginia Diodes external converter to 1500GHz,” said Sean Lee, business development for RF products. “The frequency extender is more than just a mixer. It has a built in filter to help with image rejection in a small factor with a USB-powered remote head to extend the measurement of the DUT."

The performance is achieved with a new amplifier structure in the hardware. The preamplifier operates at 3 to 50GHz but a low noise amplifier (LNA) is added to drive down noise. This reduces the noise distortion with a much lower noise floor.

“The receiver calibrator improves the


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