Microstrip patch antennas and their arrays may be rare but are the most widely used antenna form. They have a simple structure and can be formed by a dielectric, a metal conductor patch on the dielectric layer, and a ground plane. Even the dielectric in the middle can be an air structure. A typical microstrip patch antenna is made on a printed circuit board (PCB), and a fine line structure is etched on the conductive metal layer using a photocopying method
Power Electronics: Another benefit of a flexible printed circuit board is that it can be coupled with highly flexible, thin layers of copper, which means the board can handle heavier power currents. This is especially important in devices that will require more power to operate at full capacity, like those found in the power electronics industry.
High-frequency PCB design requires special considerations to ensure optimal performance of the board. These include rules that consider material selection, stackup, routing, and impedance control. By following these guidelines and taking the necessary steps, designers can create a high-frequency board that produces reliable results.