What is RF filters?

RF filters are electronic circuits designed to selectively allow radio frequency (RF) signals within a specific frequency range to pass through while attenuating or blocking signals outside that range. They are crucial components in wireless communication systems, radio receivers, transmitters, and other RF devices to eliminate unwanted noise, interference, and spurious signals, ensuring that only the desired signals are processed. Common types include bandpass, low-pass, high-pass, and band-stop filters, each tailored to different frequency selection requirements. They are commonly used to improve signal quality, prevent receiver saturation, and meet regulatory requirements for emissions.