What is an RF Signal Generator?

A Radio Frequency (RF) signal generator is a device that behaves as a stable local oscillator signal, generating different types of modulated signals. There are various factors to consider before reaching a final decision on the right RF signal generator, such as: 

• Accuracy of Amplitude

• Signal Output Frequency Range

• Required Power Size

• Modulation Type, & Much More

Generators approach these factors differently from one another, covering a range of applications, requirements and specifications. We will discuss several solutions, from BNC, in more detail below:

Model 845

The 845 is an RF Signal Generator with a small form factor, covering the 100 kHz – up to 26.5 GHz range. Its low power usage and conservative form make it a suitable unit for field applications. 

Model 865

The 865 is a higher-performance RF Signal Generator that can cover the 100 kHz – up to 42 kHz range. As well, the 865 boasts a unique 100 kHz – 6 kHz model, the capability to reach a -120 dBm to +18 dBm power range with modifications and has reduced phase noise compared to the Model 845. It is a powerful instrument for benchtop setups and applications demanding high precision. 

Model 855

Outstanding phase coherence can be achieved using the Model 855 signal source. The individual channels can be programmed with sub mHz frequency resolution and individually tuned in phase, owing to its capacity for phase-coherent switching. This is essential for applications such as the development and advancement of phased-array antenna systems for radar, mobile communications and satellite broadcasting. 

Applications of RF Signal Generators

The applications of RF signal generators fall into two broad categories: testing and instrumentation. Keep these two categories in mind as we review some specific sectors that employ RF Equipment: 

• Warfare and Law Enforcement

Electronic warfare and law enforcement agencies rely on signal generators for their ability to sweep modulations.

• Automated Test Equipment

RF Product manufacturers see a demand for high-speed automated test setups, to ensure the correct manufacturing of their devices on the largest scales. The manufacturing process requires RF signal generators and power detectors in such setups.

• Antenna Beam Steering

RF signal generators can also be used to accurately ascertain the functionality of phased array antennas and beam steering. Specifically, signal generators designed by BNC consist of dual independent channels that enable separate control of frequency, phase, and amplitude on each channel.