Learn how to calculate and design a simple PCB patch antenna for WiFi and Bluetooth using KiCad in this comprehensive tutorial. Explore the fundamentals of microstrip PCB patch antennas, including effective permittivity calculations, antenna length and width determinations, and feed design. Utilize online calculators to determine antenna dimensions, understand quarter-wave transformer calculations, and examine ground plane considerations. Follow along as the instructor demonstrates the complete design process, from schematic creation to PCB antenna footprint implementation, providing practical insights for integrating the antenna into your own board designs.