A Channelized 2-18 GHz Microwave Receiver Block Diagram

High-performance Aerospace & Defense systems require wideband, high-fidelity signal detection—often across the 2–18 GHz range, used in applications like fire control radar. Traditional receivers use switched filter banks to isolate frequency bands, but these introduce latency and blind spots. Marki’s channelized receiver architecture solves this by using a multiplexer to simultaneously split the full spectrum into multiple bands, each monitored by its own ADC, ensuring real-time, gapless coverage.

At the 2025 International Microwave Symposium (IMS), Marki showcased a compact 2–18 GHz channelized receiver built entirely from its ultra-miniature surface-mount components. Key innovations include CSP-packaged limiters, switches, amplifiers, filters, and power dividers—enabling up to 75% size reduction versus traditional designs. The system architecture includes a front-end limiter to protect against high-power threats, configurable amplifier paths for signal conditioning, and a multiplexer-based signal-routing scheme. Additional stages use equalizers to flatten frequency response and gain block amplifiers to maintain signal strength. Final-stage filters eliminate residual noise before digitization.

Marki’s MMIC technology supports low insertion loss, high linearity, and broad bandwidth in the smallest possible footprints, making it ideal for dense, high-frequency receiver modules. The IMS demo demonstrates how these modular components can be assembled into a fully integrated, scalable solution for wideband signal detection.

Engineers can adapt this architecture to suit specific performance, size, and power requirements. Marki offers technical support for custom configurations, making it easier to build channelized receivers tailored to the needs of modern RF systems.