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Showing Results For: Variable Capacitance (Varicaps, Varactors)
Variable capacitance diodes, commonly known as varicaps or varactors, are specialised semiconductor devices that exploit the relationship between capacitance and voltage in reverse-biased p-n junctions. They are typically made using silicon, although other materials like gallium arsenide (GaAs) can be used for specific high-frequency applications. These diodes provide variable capacitance based on the applied voltage, allowing them to act as tunable capacitors in electronic circuits. Each type offers distinct performance characteristics, and they are available in different types, such as abrupt and hyperabrupt junction varactors. Varicaps are characterised by their low cost, compact size, and high tuning range, making them an essential component in modern RF circuits.
