The new microwave signal generator offers four frequency ranges and good output power, spectral purity, low close-in phase noise, and minimal wideband noise for superior analog signal generation.
Rohde & Schwarz has released the R&S SMB100B Microwave Signal Generator, capable of analog signal generation up to 40 GHz. This device is tailored for applications that require clean analog signals and high output power across a range from 8 kHz to 40 GHz. It is ideally suited for the testing of radar receivers, semiconductor components, and various signal converters and amplifiers.
The signal generator is distinguished by its ability to produce signals with very low single sideband (SSB) phase noise, superior non-harmonic suppression, and minimal wideband noise across all carrier frequencies. For those needing improved phase noise and frequency stability, an enhanced version with a high-performance reference oscillator is available, which also reduces temperature-related performance variations. Users can opt for reference frequencies ranging from 1 MHz to 1 GHz, and the device offers optional high output power, up to 25 dBm at 20 GHz and 19.5 dBm at 40 GHz, which can be enabled at any time through a keycode.
Key features include:
- Lightweight design: 10.7 kg
- Compact size: Fits into a 19” rack, occupies only two rack units in height
- High output level accuracy
Due to its high output level accuracy which is crucial as the signal frequency increases and the precision required for input levels to devices becomes more challenging. It includes features to adjust for path losses and signal variations that may occur in complex setups involving additional test fixtures, cables, or amplifiers. It also supports a user correction function (UCOR) to adjust for known frequency responses, and closed-loop power control, which measures the input level to the device under test (DUT) continuously, adjusting the output power accordingly.
It enhances user experience by allowing the creation of customised menus and the automation of measurements. It includes a SCPI macro recorder and a code generator to export instructions for automated setups in languages such as MATLAB. Additionally, using the company’s Legacy Pro, the device can emulate other instruments, including older models or those from competitors, facilitating its integration into existing setups.
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