Test & Measurement

Signal generator covers 9kHz to 43.5GHz frequency range

16th November 2021
Mick Elliott

Signal purity and frequency stability even at high output power levels across a broad frequency range of 9 kHz to 43.5 GHz are features of Anritsu’s Rubidium signal generator family.

Coupled with built-in, easy-to-use, at-location frequency and power calibration capability, Anritsu says that the Rubidium offers exceptional overall utility and long-term value in a broad range of commercial and military/aerospace measurement applications.

Signal purity is critical to a wide range of measurement applications ranging from radar testing to testing of ADCs and DACs.

The instrument offers a groundbreaking low single sideband (SSB) phase noise of -136 dBc/Hz (typical) and -140 dBc/Hz (measured) at 10 GHz and 10 kHz offset that,claims Anritsu, is unmatched in the industry.

Added to best-in-class harmonic and spurious performance, the Rubidium signal generator enables customers to make measurements with better accuracy.

The Rubidium offers an order of magnitude with better frequency stability compared to other signal generators that use an OCXO based reference.

This frequency stability is achieved either by an optional internal Rubidium reference or by locking the signal generator’s time base to a 1 PPS reference from an optional internal GNSS/GPS atomic clock receiver.  

The Rubidiumsignal generator features built-in, on-site frequency, and level calibration that is easily accessible with the touch of a button on the GUI interface. This feature ensures customer level, accurate frequency desired, timesaving, enhancing convenience, and increasing instrument availability.

An Anritsu CW USB power sensor is required for onsite level calibration. An internal GNSS/GPS atomic clock receiver or ultra-stability rubidium time base option is required for onsite frequency calibration.

The Rubidium’s AM, FM/PM, and pulse modulation capabilities enables a wide range of complex analogue modulated signals.

An internal low frequency generator can generate seven different waveform types to modulate the carrier.

Additionally, simultaneous modulation of AM/FM, AM/PM, or FM/Pulse is possible to generate complex modulation waveforms such as chirps. Broad signal simulation capabilities are built into the signal generator for pulsed radar testing.

The Rubidium is housed in a 3U chassis with a 7-inch touch screen on the front panel with a traditional keypad/dial interface.

A wide range of options are offered to achieve optimum cost-to-function and measurement flexibility.

Applications are varied. The signal generator can be used where low phase noise is required, such as testing radar subsystems, up/down converters, or high-speed ADCs/DACs.

It is well suited for conducting nonlinear measurements without additional filters because of the exceptionally low harmonic, subharmonic, and non-harmonic performance at standard and high output power levels.

The instrument can be used for a variety of interference measurements, as a signal source to test devices and systems, and as a frequency reference in calibration and metrology labs.

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