How to Identify Spurious Signals in Oscillator Designs

Get Quote
Phase Noise Analyzers
+ Phase Noise Analyzers
Phase Noise Analyzers
+ Phase Noise Analyzers

Find and Eliminate Spurious Signals

Spurious signals are a major source of spectral degradation in oscillator and phase locked loop designs, often arising from reference leakage, fractional modulation effects, power supply coupling, and digital interference. These discrete tones can appear at predictable or unexpected offset frequencies and significantly impact RF system performance by increasing interference, violating spectral masks, and degrading signal quality. In applications such as wireless communications, radar, and high-frequency systems, uncontrolled spurs can reduce dynamic range, increase error rates, and lead to compliance failures.

Engineers identify and analyze spurious signals by examining both phase noise profiles and discrete spectral components across offset frequencies. By correlating spur location and amplitude with system parameters such as reference frequency, loop bandwidth, and modulation schemes, they can determine root causes and isolate design issues. This detailed analysis enables optimization of loop design, filtering, grounding, and layout, ensuring improved spectral purity and robust system performance in complex RF environments.

Spurious Signal Detection and Troubleshooting Solution

This solution enables precise detection and analysis of spurious signals in oscillator and phase locked loop designs using a high-performance phase noise analyzer combined with dedicated measurement and analysis software. The phase noise analyzer provides ultra-low noise floor performance and high dynamic range, enabling accurate phase noise measurements while resolving low-level spurious components across a wide range of offset frequencies. Its integrated measurement engine supports fine resolution bandwidth control and simultaneous noise and spur analysis, ensuring reliable detection of discrete spectral artifacts that can impact system performance. The accompanying software extends these capabilities by providing automated spur detection, marker-based frequency tracking, and advanced data visualization tools that allow engineers to efficiently analyze spectral behavior. Correlation and analysis features help link spurious signals to specific design elements such as reference sources, loop dynamics, or power supply noise. Engineers can quantify spur amplitude, evaluate compliance with spectral requirements, and optimize design parameters to mitigate unwanted emissions. By combining high-performance hardware measurement with powerful software-driven analysis and automation, this solution improves oscillator performance, enhances spectral purity, and supports reliable RF system operation.
Get Quote

Explore Products for Our Spurious Signal Troubleshooting Solution

Related Use Cases

How to Make 6G D-Band Noise Figure Measurements

Early 6G research requires exploring the D-band (110-170 GHz) for prototyping and system performance validation. Learn how to measure and characterize the whole system's performance using noise figure measurements.

Learn More

How to Perform Smart Spectrum Monitoring

Smart spectrum monitoring for mission-critical communications requires emulating real-world RF conditions. Learn how to simulate signal activity, interference, and geolocation to enhance detection, tracking, and response across complex, dynamic RF environments.

Learn More

How to Measure Wideband RF Spectrum

Measure wideband RF signals with high accuracy using advanced spectrum analysis techniques and optimized measurement settings.

Learn More

contact us logo

Get in Touch with One of Our Experts

Need help finding the right solution for you?

Contact Us