What are inductors (coils) when used for high frequency compensation called?

Inductors used for high-frequency compensation are referred to as peaking coils. These coils are specifically designed to enhance or "peak" the response of a circuit at certain frequencies. Their primary function is to compensate for losses or to improve transient response in high-frequency applications. By introducing a peaking coil into the circuit, engineers can create a resonance at a desired frequency, allowing for better performance and signal integrity.

In high-frequency applications, it is vital to manage resistive losses and maintain the quality of signal transmission. Peaking coils can help achieve this by providing a boost in the amplitude of specific frequency signals, ensuring that they are transmitted with minimal distortion or loss. This is particularly important in communication systems where signal clarity and strength are crucial.

The other types of coils mentioned, such as coupling coils, filtering coils, and block coils, serve different purposes. Coupling coils are primarily used to transfer energy from one circuit to another, filtering coils are utilized to remove unwanted frequency components from a signal, and block coils are designed to stop or "block" certain frequencies from passing through. Each serves its unique function, but peaking coils play a distinct role in optimizing high-frequency performance.