Phase noise analyzer and VCO tester features high sensitivity

October 12, 2021 // By Jean-Pierre Joosting
 Phase noise analyzer and VCO tester features high sensitivity
For high speed, real-time phase noise measurements using sources that require high stability in demanding applications, the FSPN phase noise analyzer has superb sensitivity, accuracy and reliability.

Rohde & Schwarz has designed its FSPN phase noise analyzer and VCO tester for production and design engineers who characterize sources such as synthesizers, VCOs, OCXOs, and DROs. Providing very high sensitivity and measurement speed, the FSPN is ideal for demanding phase noise and VCO analysis in development and production.

The FSPN comes in two models: one covers the frequency range from 1 MHz to 8 GHz and the other from1 MHz to 26.5 GHz, addressing radar and satellite applications in the C band, X band, Ku band, and the complete K band. Catering to the unique measurement challenges in these fields, the FSPN expands the Rohde & Schwarz phase noise product portfolio which already contains the successful, market-leading ultra-high-performance FSWP phase noise, spectrum and signal analyzer. The FSPN shares tried-and-tested FSWP features such as low noise internal local oscillators coupled with real-time cross correlation engines for increased measurement sensitivity.

Cross-correlation sensitivity gains can be viewed in real-time in result traces, allowing users to adjust the trade-off between measurement speed and sensitivity to meet their application requirements. Users in production need just a few correlations to measure high-quality oscillators, synthesizers or VCOs with high throughput. By increasing the number of correlations, users in R&D can characterize the most sensitive commercially available synthesizers and oscillators. Simultaneous device frequency and phase settling times can be measured with up to 8 GHz of real-time analysis bandwidth. To investigate oscillator long-term frequency stability, the FSPN calculates the Allan variance in the time domain at fixed intervals and uses phase noise measurements to apply cross-correlations and suppress spurs.

The FSPN phase noise analyzer and VCO tester provides very high sensitivity and measurement speed.

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