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Precision Signal Generation in a Compact Design

Keysight affordable compact signal generators feature low phase noise and fast switching speeds, ideal for single- and multi-channel phase coherent RF local oscillators for radar, 5G/6G, and RF component test. Designed to support engineering workflows from early design through validation, these compact signal generators help reduce measurement uncertainty, improve correlation, and deliver repeatable results — without sacrificing bench space.

Find the Signal Generator That's Right for You

RF Insights and Demos: New Compact Solutions

Watch our webinar to see experts demo compact RF signal generators and analyzers — covering features, use cases, and tips to streamline testing.

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Explore Use Cases and Demos

Advanced Battery Testing with the High Power ATE System Power Supplies NPI

Generate Phase-Coherent Tones

Increasing intermodulation testing accuracy with a pure signal generator and ensure stable signals for precise measurements.

How to Perform Intermodulation Testing

Phase-Coherence Signal Confidence

Achieve reliable, synchronized signal generation with precise phase coherence, boosting productivity and reducing errors.

Watch Phase Coherence Demo

Locate the Signal

Real-Time Spectrum Insight

Explore real-time spectrum analysis to identify and eliminate unwanted emitters and interference, ensuring accurate testing.

How to Perform RF Amplifier Gain Testing

Speed Up RF Validation

Enable high-volume amplifier testing with fast frequency changes and wide dynamic range for accurate gain analysis.

Watch Fast Switching Demo

Pure Signals. Reliable Results.

When every dB counts, the spectral purity of your signal generator becomes critical. This application note breaks down the fundamentals of phase noise, spurious performance, and distortion, helping you understand how each affects measurement accuracy.

With clear guidance and practical examples, you’ll be able to choose the right signal source and optimize test setups for consistent, dependable results.

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Pure Signals. Reliable Results.

Featured Resources

Application Notes 2025.04.02

Fast RF Device Testing with Analog Sources

Signal generators, also known as signal sources, provide a stable and reliable signal for testing and evaluating electronic circuits and devices. Portable, general-purpose analog signal generators with a wide output power range, low phase noise, and fast frequency and amplitude switching speed have many applications in R&D, manufacturing test, and field test. This application note discusses several common applications of Keysight’s compact RF and microwave analog signal generators, AP5001A and AP5002A.

2025.04.02

Application Notes 2026.02.28

Understanding Phase Noise Needs and Choices in Signal Generation

This application note first discusses the fundamentals of phase noise before moving on to a closer look at architectural choices and the effects of various functionality alternatives. The discussion then moves on to an overview of Keysight Technologies, Inc. signal generators and the built-in capabilities they offer to enhance or selectively degrade phase noise performance.

2026.02.28

White Papers 2026.02.28

The Essential Signal Generator Guide Building a Solid Foundation in RF – Part 1

Choosing the right signal generator is essential for obtaining trustworthy test results and accelerating time-to-market. This paper covers the basic functionalities, types, and key specifications of signal generators in detail. Signal generators are crucial in eliminating uncertainties in test results for engineers working on consumer electronics, wireless communications, or radar devices. They provide precise and stable test signals necessary for characterizing devices, even in bandwidth-limited and interference-heavy environments. By allowing engineers to apply impairments, signal generators help test designs within and beyond their limits, ensuring reliability and robustness. RF signal generators, including analog and vector types, create necessary waveforms for testing RF applications. Engineers use them to generate repeated or non-repeated waveforms for designing, testing, and manufacturing systems and components. Signal generators simulate real-world signals, enabling comprehensive evaluation of electronic systems’ performance and behavior.

2026.02.28

White Papers 2024.09.06

The Essential Signal Generator Guide Building a solid foundation in RF — Part 2

Navigating the numerous specifications and features of signal generators can be challenging. This white paper series helps by explaining various modulation schemes, the importance of spectral purity, and the impact of distortion. Additionally, it explores how application software can enhance productivity. Signal generators are essential for meeting customer requirements for robust and reliable high-speed wireless connections, which are crucial for business success. To address market demands, selecting the right signal generator is vital. Complex modulation schemes, necessary for increasing spectral efficiency and achieving higher data rates, rely on accurate and stable signal generators. Signal generators can be either digital (vector) or analog. Vector signal generators produce complex, digitally modulated signals, while analog signal generators produce continuous wave signals with basic modulation. The choice depends on the specific application and testing requirements. Generating an RF signal requires a metrology-grade signal generator with excellent distortion and spurious characteristics to ensure high spectral purity. The frequency accuracy of a signal generator depends on the stability of the reference oscillator and the time since the last calibration. Overall, signal generators are indispensable for evaluating applications that rely on radio frequencies, such as GNSS, 5G, avionics, and radar, ensuring reliable and efficient performance.

2024.09.06

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