Signal generator uses rubidium source for stability

November 16, 2021 // By Nick Flaherty
Signal generator uses rubidium source for stability
Anritsu's Rubidium family of signal generators operates up to 43.5GHz for radar testing 

Anritsu has launched a signal generator with an emphasis on signal purity for military and high end commercial applications.

The Rubidium signal generator family operates from 9 kHz to 43.5 GHz with low single sideband (SSB) phase noise of -136 dBc/Hz (typical) and -140 dBc/Hz (measured) at 10 GHz and 10 kHz offset.

The signal generator is aimed at a wide range of measurement applications ranging from radar testing to up/down converters and testing of ADCs and DACs, as well as conducting nonlinear measurements without additional filters.

It can use 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 to achieve an order of magnitude increase in frequency stability over crystal oscillators.

As a result the family 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 and the AM, FM/PM, and pulse modulation capabilities provide a wide range of complex analog 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 family also has on-site frequency and power calibration capability 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 is housed in a 3U chassis with a 7-inch touch screen on the front panel with a traditional keypad/dial interface.

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