Bandpass Filters
Jaime Ramirez‐Angulo · Encyclopedia of RF and Microwave Engineering · 2005
Abstract Bandpass filters are common building blocks of many electronic systems. They find applications in diverse fields such as communications, audio, instrumentation, and biomedicine. Bandpass filters are used on the receiver side in order to select or “filter out” only one of the signals transmitted in the channel. A process called demodulation is used to shift the spectrum of the selected signal back to baseband (to a zero center frequency).