I will design rf pcb antenna impedance matching and wireless circuit layout

If your device has WiFi, Bluetooth, LoRa, or GPS and the range is worse than it should be, there's a good chance it's not the radio chip it's the RF side of the board. I fix and design that part: 50-ohm trace routing, antenna matching networks, ground plane layout around the antenna, and general RF PCB layout for wireless boards.

A lot of the time this comes up on a board that's already built and just underperforming maybe the antenna trace wasn't matched properly, the ground plane has a gap where it shouldn't, or the matching network components were guessed at instead of calculated. I can review an existing board like that, tell you what's actually wrong, and fix the layout or matching network.

I also do this from scratch on new designs if you're adding WiFi, BLE, LoRa, or GPS to a product and want the RF section done properly the first time instead of debugging range problems after the fact.

Send me your current board files or schematic (if you have an existing design), the wireless protocol/frequency involved, and a description of the issue if there is one, and I'll confirm scope before you order.