RF Diodes are a semiconductor device with two terminals that allows the flow of electricity in one direction and restricts the flow in the other. The devices in this family are used in radio frequency matching circuits for electronic tuning. The diode types are pin, Schottky, and standard, with reverse voltages ranging from 1 to 15,000 volts and current values ranging from 10 mA to 20 A.

What is an RF diode and what does it do?

An RF diode is a specialized semiconductor device that permits electric current to flow in one direction while blocking it in the opposite direction. This characteristic makes RF diodes particularly useful in radio frequency matching circuits for electronic tuning, enabling rapid switching between various frequencies and gain settings.

The advantages of RF diodes include their low cost, broad bandwidth, and fast switching capabilities. They can also manage high power levels and offer effective isolation between the RF source and output. However, a key disadvantage is their restricted operating temperature range.

How do RF diodes work?

RF diodes function by regulating the voltage and current that pass through them. When forward biased, current flows in one direction, and voltage is applied across the diode. Conversely, when reverse biased, the voltage is insufficient for current to flow. By managing these voltage and current levels, RF diodes can effectively tune radio frequencies and gain settings in electronic tuning circuits.

What are the types and brands of RF Diodes?

There are several types of RF Diodes, including RF PIN diodes, Schottky diodes, and varactor diodes. Among the popular brands of RF Diodes are NXP, Vishay, and ON Semiconductor.