Optimization of RF Wireless Charger PCBs

Project Title:
Miniaturization and Optimization of Wireless Power Transfer System (Transmitter & Receiver PCBs)

Description:
I have developed and patented a wireless power transfer system that allows devices to charge over-the-air at distances up to 5 meters. The system currently uses a combination of beamforming antennas and omnidirectional antennas to direct and distribute energy efficiently. The PCB designs are fully functional, but for productization, I need both size and thickness reduction — especially on the receiver side — and to replace the current antennas with smaller components.

I am looking for an experienced RF & PCB engineer to:
– Redesign both transmitter and receiver PCBs to reduce overall dimensions (especially receiver)
– Replace the current beamforming and omnidirectional antennas with compact chip antennas capable of >30 meters omnidirectional range, while maintaining high energy transfer efficiency
– Ensure all current safety and compliance features remain intact: overvoltage, overcurrent, overtemperature protection, battery management IC, fuses, thermal vias, and readiness for FCC/CE compliance
– Deliver updated Gerber files, BOM, schematic, and PCB stackup ready for manufacturing

Current system features:
– Output voltage: 9V
– Charging range: 5 meters
– Advanced EM shielding (copper pours, fence vias, stitching)
– Battery management IC (receiver side)
– Fuses on both boards

Deliverables:
– Optimized PCB files (transmitter & receiver)
– Antenna matching networks updated (for new chip antennas)
– Documentation of all modifications (schematics, BOM, stackup, design notes)

Preferred Skills:
– RF PCB Design (multi-layer boards)
– Chip antenna design & integration (including matching network)
– Wireless power transfer system design
– Power electronics safety integration (battery ICs, fuses, protection circuits)
– Experience preparing Gerber files, BOM, stackup for manufacturing
– Clear communication & documentation skills

Additional Notes:
The final goal is to achieve smaller, thinner transmitter and receiver modules with omnidirectional energy release, using chip antennas capable of maintaining or extending the current range. Prior experience with RF miniaturization and long-range wireless systems is highly valued.