Cost-Effective Design Solution for GAIM Shooting Trigger PCB & Improving the Power Distribution Network

Sammanfattning: Virtual Reality (VR) shooting simulators have gained popularity as effective training and entertainment tools. GAIM is a Swedish company specializing in VR shooting simulators, offering VR headsets with physical dummy guns and rifles. These dummy weapons contain complex electronics that are prone to compilations, especially because the Printed Circuit Board (PCB) is fitted in very compact spaces inside the weapons. Small PCB size constraints will affect various aspects such as design complexity, Radio Frequency (RF) performance, Power Integrity (PI), cost etc. This report investigates the process of replacing an RF module (ANNA-B112) with an RF chipset (nRF52832) & discrete components (crystals, chip antenna, decoupling components etc), on the already existing PCBs inside the guns/rifles, with the basis of maintaining optimal RF performance, and significantly decrease the cost (depending on the production quantity). Power integrity analysis and simulations will be conducted for both the old and new design, with a focus on enhancing the impedance characteristics of the power distribution network (PDN). To achieve this, various processes will be tackled. Starting with the design process, which consists of symbol/footprint creation, schematic and PCB layout design. Simulations of the PCB to optimize the power integrity (PI) with PDN impedance analysis. Once the design process is finished we move on to the manufacturing and assembly process. After the assembly we have a finished PCB with mounted components, which will be ready for RF/antenna measurements and functionality verification.