Abstract
Diode control devices (switches, attenuators, and limiters) utilize PIN diodes. A PIN diode is a semiconductor device that operates as a variable resistor at RF and microwave frequencies. Equivalent circuits of a PIN diode for reverse and forward biases are presented in this chapter. With reverse bias, the PIN diode exhibits very high resistance, but when forward bias is applied across the PIN diode, resistance is very low. It makes the PIN diode attractive for switches and attenuators. The maximum RF power that a PIN diode can handle is limited by two factors. The first is the power dissipation capability that is determined by the maximum junction temperature (at which the device can operate with full reliability),and the thermal resistance of the diode and packaging. The second factor is the breakdown voltage that the device can be subjected to without causing damage to the junction. The amount of maximum RF power is usually much larger than the power dissipation in the diode because PIN diodes are usually operated in a reflective mode. The breakdown voltage of PIN diodes must exceed the value of reverse bias plus twice the peak RF voltage to prevent nonlinear loss.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
