SPDT Shunt PIN Diode Switch

Design of various microwave circuits using semiconductor devices can be carried out utilizing WIPL-D Microwave. Many types of diodes, such as PIN and Schottky diodes, or transistors operating in a linear regime, can be simulated by inserting into a schematic a suitable equivalent circuit usually provided by a manufacturer. Other schematic elements from the libraries available, including ideal, microstrip, co-planar or coaxial elements, can be subsequently added to the schematic to complete the design of complex microwave circuits such as switches, detectors, amplifiers, oscillators etc.

The application note illustrates the PIN diode through the design of single pole double throw (SPDT) switch utilizing two PIN diodes. The diodes are represented in a form of an equivalent circuit.  Due to the operating principle of the switch, both ON and OFF equivalent circuits are used in the same circuit.

An illustrative example of a SPDT PIN diode switch simulation using WIPL-D Microwave demonstrates that besides main strengths in EM related problems, the WIPL-D suite provides a complete environment for design of complex microwave circuits including those utilizing semiconductor devices.

Section: Microwave Circuits

For full version of the document, please check the following pdf.