Direct conversion

What is direct conversion?

Direct conversion is an innovative technology in the field of signal processing.

Unlike traditional conversion methods, direct conversion enables radio frequency (RF) signals to be converted directly into digital signals, eliminating intermediate steps.

This simplification of the architecture offers several major advantages, including a significant reduction in latency and system complexity, which improves overall system performance. In addition, this method makes it possible to design more compact and energy-efficient systems, meeting the growing demands of modern applications.

Direct conversion operating principles

Direct conversion is based on a simplified architecture in which radio-frequency (RF) signals are converted directly into digital signals using a broadband analog-to-digital converter (ADC). Unlike traditional architectures, which require several intermediate steps, such as down-conversion to an intermediate frequency (IF) and filtering, direct conversion eliminates these processes by directly capturing the RF signal in its original band. This approach relies on high-performance components, capable of handling wide bandwidths while maintaining low distortion and a high signal-to-noise ratio.

In this context, direct sampling plays a central role, enabling the direct digitization of high-frequency RF signals thanks to advanced sampling rates. This method further eliminates the need for complex analog processing, simplifying the architecture while offering greater precision and enhanced performance in demanding applications.

Another major advantage of direct conversion is its flexibility and scalability. Digital processing can evolve thanks to reprogramming, enabling the system to be adapted to new needs without changing the hardware. This flexibility facilitates the addition of new functions and extends the life of the equipment.

Direct conversion applications

Electronic warfare and radar systems

Direct conversion has a crucial application in electronic warfare and military radar. It enables immediate detection and rapid analysis of signals, which is essential for surveillance operations and real-time countermeasures. By eliminating intermediate conversion steps, this technology reduces latency, improving reactivity and efficiency in managing threats in the field.

High-speed communications

In the field of broadband communications, direct conversion significantly improves the performance of 5G networks and satellite communication systems. It enables direct RF conversion, simplifying equipment architecture while optimizing data transmission. This translates into higher transmission speeds, reduced power consumption and better management of data flows in high-demand environments.

Measurement and monitoring

Direct conversion is also used in measurement and monitoring systems, where speed and accuracy are essential. It enables instant, reliable data acquisition, essential for critical infrastructure monitoring, environmental monitoring or quality control systems. Thanks to its ability to handle large bandwidths and minimize errors, it improves measurement accuracy while simplifying the architecture of monitoring systems.

reflex ces and apissys’ solutions

reflex ces and apissys, key players in the embedded field, offer state-of-the-art solutions for demanding signal processing applications.

The AV153 card, aligned with the SOSA™ standard, is a high-performance VPX solution, suitable for military and embedded applications, where robustness and flexibility are essential.

These ultra-broadband boards are specially designed to deliver outstanding performance in bandwidth-critical environments, while being perfectly suited to measurement systems, surveillance, as well as communication and electronic warfare solutions. They combine simplified architecture with advanced RF and digital signal processing capabilities.

Our products stand out for their reliability and ability to handle intense workloads while guaranteeing ultra-low latency. These features make them the preferred choice for mission-critical applications.