What Is Frequency Modulation?
Frequency modulation (FM) is a method of transmitting information by varying the frequency of a carrier wave in response to the amplitude of an information signal. This technique ensures that as the information signal’s amplitude changes, the carrier wave’s frequency adjusts accordingly, enabling the signal’s recovery at the receiver.
FM is pivotal in sectors like broadcasting, telecommunications, and healthcare, supporting the need for high-quality signal transmission. Its advantages include noise resistance, superior audio quality, and extensive frequency bandwidth. Nonetheless, these benefits come with the trade-offs of increased power requirements and sophisticated circuit designs. FM is categorized into narrowband FM, which is energy-efficient and conserves bandwidth, and wideband FM, known for its exceptional audio transmission quality.