RF Signal Generators

RF signal generators produce high-frequency signals in the radio frequency spectrum, which may range from a few kilohertz (kHz) to high power outputs of several gigahertz (GHz). They are waveform generators used for testing and measuring equipment in electronic testing, telecommunications, audio and video, as well as automotive applications.

Key Features of RF Signal Generators and How They Work

RF signal generators create precise radio frequency signals by generating waveforms at specific frequencies and amplitudes. Their core components include:

• Oscillator: Generates the fundamental RF signal at the desired frequency.
• Modulator: Adjusts the RF signal according to user specifications, supporting modulation types such as amplitude modulation (AM), frequency modulation (FM), phase modulation (PM), or complex digital modulations to simulate real-world signals.
• Power Amplifier: Calibrates and amplifies the modulated signal to ensure it meets testing power requirements.
• Output Stage: Delivers the final RF signal to the device under test (DUT) with controlled amplitude and frequency stability.

Modern RF signal generators often incorporate digital signal processing (DSP) to generate arbitrary waveforms and complex modulation formats, enabling realistic simulation of wireless communication signals.

Benefits of Using RF Signal Generators

• Accurate Testing: Provide precise and stable RF signals for reliable testing of components and systems.
• Versatility: Capable of generating a wide range of waveforms and modulation types, suitable for diverse applications.
• Improved Product Development: Facilitate the design, debugging, and validation of RF circuits and wireless devices.
• Compliance Testing: RF signal generators are essential for electromagnetic compatibility (EMC) and regulatory compliance testing.
• Cost and Time Efficiency: A radio frequency generator helps to reduce development time and costs by enabling exhaustive pre-compliance and functional testing in-house.
• Portability: Compact models with USB functionality offer flexibility for field work and data transfer applications.

Types of RF Signal Generators

Basic RF Signal Generators

Also known as function or wave generators, these basic RF signal generators produce simple, repetitive waveforms. Both professionals and students utilise these generators for basic troubleshooting of electronic devices.

Low-Frequency to Mid-Range RF Signal Generators

Arbitrary Waveform Generators (AWGs) and Function Generators are both capable of generating standard to intricate waveforms. Thanks to their ability to simulate complex 5G signals, Arbitrary Waveform Generators play an important role in the testing and development of modern 5G networks.

High-Frequency RF Signal Generators

High-frequency RF Signal Generators and RF Vector Signal Generators represent the gold standard for RF testing. Vector Signal Generators, in particular, are able to add complex modulations to waveforms it generates, which allows for more realistic mobile device or radar systems testing.

Wideband USB-Controlled RF Signal Generators

USB or computer-controlled signal generators are used to generate high frequency signals over a broad frequency spectrum. They are commonly used for testing Wi-Fi, GPS, satellite communications, and other wireless systems requiring flexible, portable solutions.

Industrial applications of RF Signal Generators

Integrated Electronic Testing

The deployment of RF signal generators are critical for integrated electronics testing, like that of RF integrated circuits (RFICs) and modules. Signal generators are also used to calibrate the RF front-end module of smartphones, so that a high degree of Wi-Fi, Bluetooth, and mobile communication functionality can be accounted for.

Embedded Systems

Many modern embedded systems, from Internet of Things (IoT) devices to automotive electronics, incorporate RF transceivers.

RF signal generators are needed to test for receiver sensitivity, verify data transmission and reception, measure antenna performance, and debug wireless protocols.

Digital Circuits

RF signal generators are used to measure the performance of digital circuits which incorporate RF interfaces and those that operate at high speeds. For instance, the ability of RF signal generators to produce high-frequency data streams is utilised for the testing of Serialiser/Deserialiser (SerDes) interfaces.

Analogue Signal Processing

The development and testing of analogue signal processing circuits and systems wouldn't be possible without RF signal generators. They are used for characterising filters, testing amplifiers, evaluating mixers and frequency converters, as well as assessing modulators and demodulators.

Laboratories Testing

RF signal generators are ubiquitous across research and development labs of various scientific and engineering disciplines. For example, they can be used for electromagnetic compatibility testing, to generate controlled interference signals to determine a device's suitability for pre-compliance testing.

How to Choose the Right RF Signal Generator

When selecting an RF signal generator, consider the following factors to ensure it meets your testing requirements:

• Frequency Range: Choose a generator that covers the frequency spectrum relevant to your application, from kHz ranges for basic testing to multi-GHz for advanced wireless systems.
• Modulation Capabilities: Ensure support for the modulation types needed, such as AM, FM, PM, pulse modulation, or complex digital modulations like QAM and OFDM.
• Output Power and Accuracy: Verify the maximum output power and signal stability to match your device under test specifications.
• Waveform Generation: The ability of Arbitrary waveform generators to create complex waveforms with high precision make them suited for complex testing.
• Interface and Control: Consider USB or LAN connectivity for your RF frequency generator in order to have remote or automated control, especially for integration into test systems.
• Portability: For field testing, compact or USB-controlled RF generator models provide greater flexibility.

Leading Distributor of RF Signal Generators in Singapore

Make RS your go-to source for RF signal generators you can rely on. We stock an extensive range from trusted brands like Aim-TTi, Keysight Technologies, and Pico Technology. Our selection includes various types of RF signal generators with maximum frequency ranges from 300 kHz to 12 GHz, which are available at competitive prices.

We also carry other essential testing and measurement peripherals, such as oscilloscopes and insulation testers, for accurate and reliable results. Find the high-powered RF signal generator and pulse generator you need with RS. For more details on our ordering process, delivery services, and delivery fees, please refer to our delivery page.