Elevation Switching Module Case study
Delivered ultra-fast, synchronized RF switching for mission-critical defence radar systems
Industry: Defence Communication Systems
Why Clients Choose GD:
Our PSU selected General Datum for this mission-critical project for our ability to deliver end-to-end embedded solutions under tight timelines. We brought together circuit design, high-speed multi-layer PCB layout, deterministic firmware, and custom GUI development within a single, cohesive team.
Our simulation-first approach, deep understanding of defence-grade requirements, and strong track record of first-pass success ensured the system met strict synchronization and reliability demands. Most importantly, we combined technical precision with rapid execution, making us a trusted partner for complex embedded systems.
Challenge:
Our client needed a highly reliable 32-channel RF switching control system capable of synchronizing 128 RF cards across multiple boards with deterministic timing under 200 microseconds — a critical requirement for real-time radar and communication platforms.
The RF cards incorporate multiple complex ICs: MAPS-010165 (MACOM phase shifter), HMC8038 (Analog Devices switch, 0.1–6 GHz), QPA9127 (Qorvo high-gain amplifier), and CMD308P4 (Qorvo LNA). Coordinating these devices with precise synchronization posed significant design and timing challenges.
Solution :
General Datum delivered a complete embedded hardware–firmware solution with four 8-layer circular control boards interconnected via an Ethernet hub, covering circuit design, high-speed PCB layout, firmware (SPI/UDP), and a custom GUI.
Using RF ICs (MACOM MAPS-010165 phase shifter, Analog Devices HMC8038 switch, Qorvo QPA9127 amplifier, and CMD308P4 LNA), we implemented a daisy-chain SPI topology where commands propagate sequentially across 128 RF cards. Each card receives, processes, and forwards data, achieving deterministic switching within 200 µs.
This approach reduced wiring complexity, enabled scalable expansion, improved signal integrity, and ensured precise, synchronized control—critical for real-time radar performance
Key Results:
Achieved synchronized 32-channel switching in ~200 microseconds
Delivered full system (design + firmware + GUI + validation) in just 4 months
Successfully met Class-2 performance standards for defence applications
Ensured reliable operation through robust SPI control, TTL signalling, and EEPROM management
This project strengthened client’s radar and communication platforms with scalable, high-precision embedded control technology.