Microwave PCBs are circuit boards developed for microwave applications, typically in the frequency range of 1 GHz and above. They often consist of materials with a low dielectric constant like Rogers or PTFE, ensuring minimal signal attenuation and high precision in signal transmission. These PCBs are crucial for applications like radar, satellite communication, microwave instruments, and 5G technology, as they enable precise impedance control and minimal losses at high frequencies. The selection of the correct material is particularly important as the dielectric constant and signal routing greatly influence overall performance.