340 Signal Generators
from
58 Manufacturers
340 Products
from
58 Manufacturers
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What is an RF Signal Generator?
An RF Signal Generator is an electronic instrument that produces controlled, high-frequency RF and microwave signals for testing, validating, and calibrating wireless systems. It allows users to set parameters such as frequency, output power, modulation type, bandwidth, and waveform characteristics, making it essential for evaluating how devices perform under precise and repeatable signal conditions.
RF signal generators are widely used in the development and testing of radios, wireless communication systems, radar equipment, satellite links, GNSS receivers, RF components, and test benches across labs, production lines, and R&D facilities. They are available in various frequency ranges, power levels, and modulation capabilities - ranging from basic generators for simple continuous-wave (CW) testing to advanced vector signal generators for complex digital and multicarrier waveforms.
In addition to R&D, RF signal generators are used in manufacturing and automated test environments. Their ability to produce stable, repeatable signals ensures that large volumes of RF products - from chipsets and modules to complete radios - can be tested consistently. Engineers typically choose a generator based on required frequency range, modulation support, output power, phase noise, and budget. With numerous models available across performance tiers, our database helps streamline the selection process and ensures you can easily identify the right signal generator for your specific application.
When looking for a Signal Generator, the following are the key parameters that you must consider:
Type: Analog Signal Generator or Vector Signal Generator.
- Analog Signal Generators (often called signal sources or frequency synthesizers) produce continuous-wave (CW) or analog-modulated signals whose amplitude or frequency can be varied. They are ideal for basic RF testing such as measuring receiver sensitivity, checking linearity, evaluating noise performance, or generating simple AM/FM/PM signals. Because they do not manipulate phase and I/Q data streams, analog generators are typically more economical and are widely used in production testing, component characterization, and legacy system evaluation.
- Vector Signal Generators (VSGs) produce signals whose amplitude and phase vary with time. They generate complex digital modulation formats such as QPSK, QAM, OFDM, and custom I/Q waveforms used in 4G/5G, Wi-Fi, Bluetooth, GNSS, satellite communication, and advanced radar systems. VSGs contain internal I/Q modulators and often support wide instantaneous bandwidths, allowing engineers to emulate real-world communication channels, interference scenarios, and multi-carrier waveforms. Because of their ability to reproduce modern digital standards with high accuracy, VSGs are essential for R&D, compliance testing, and validating advanced wireless chipsets and receivers.
Frequency: The frequency specification indicates the frequency range over which the signal generator can operate. RF signal generators can generate signals from a few kilohertz to tens of GHz. The usable frequency range determines which wireless standards, radar bands, or RF components you can test. Higher-frequency generators are needed for mmWave applications such as 5G-FR2, automotive radar at 76-81 GHz, and satellite links.
Frequency Resolution: Frequency resolution defines the smallest step size by which the output frequency can be adjusted. The Resolution allows precise tuning and is essential for applications like LO substitution, narrowband receiver testing, Doppler emulation, and accurate frequency sweeps. Better resolution improves the accuracy with which the signal is generated.
Power Range: The power range defines the minimum and maximum RF output levels the signal generator can generate. A wide power range allows users to test receiver sensitivity at very low levels and measure linearity or overload behavior at higher levels. Some generators provide built-in attenuators and amplifiers to extend this range. The available power level is an important factor in component testing, system calibration, and emulating real-world signal environments.
Phase Noise: Phase noise describes the short-term frequency stability of the signal generator and represents noise sidebands that appear close to the carrier. Low phase noise is critical for evaluating high-performance receivers, radar systems, oscillators, and communication links, as it directly influences sensitivity, error vector magnitude (EVM), and overall system performance. High-quality signal generators provide ultra-low phase noise to ensure clean, stable test signals.
Channels: The channels specification indicates how many independent RF outputs a generator offers. Single-channel units are sufficient for basic testing, while multi-channel generators allow synchronized outputs for MIMO, beamforming, carrier aggregation, dual-LO generation, or multi-signal interference testing. Multi-channel capability improves test flexibility and reduces the need for multiple standalone instruments.
Interface: Defines the mechanical or modular format of the RF signal generator, determining its integration method, deployment environment, and compatibility with existing test infrastructure. Interface selection influences scalability, portability, automation capability, and how the instrument is physically incorporated into benchtop, field, or rack-mounted setups.
- Benchtop: Suited for laboratory environments where full-featured controls and front-panel operation are required.
- Portable / Handheld: Supports field deployment where mobility and reduced power consumption are prioritized.
- Rack Mount: Integrates into fixed test stations and automated test systems with standardized mounting and space efficiency.
- PXI: Provides modular instrumentation for high-density, synchronized, and automated test platforms leveraging backplane timing and control.
- USB: A USB Interface enables simple plug-and-play PC connectivity for controlling and programming the signal generator.
Largest Database of RF Signal Generator
everything RF has listed RF Signal Generator from the leading manufacturers and made them searchable by specification. You can enter the key parameters and the search tool will scan catalogs from the leading manufacturers to identify products that meet your spec. Once you find RF Signal Generator that meet your requirement, you can view product information, download datasheets or request quotations. Quotation requests will be routed to the manufacturer of the product who will get back to you directly. The quotation will also be routed to distributors of the product in your region.
