X-band Three-stub Filter Embedded SPDT Switch Using Packaged PIN Diodes and Novel Resonators

Abstract

A Single pole double throw (SPDT) switch using the packaged PIN diodes for X-band application is proposed. The SPDT switch is embedded in two Chebyshev three-stub filters where one of the three stubs is substituted by the PIN diode and peripheral circuits. The high value of parasitic inductance in the package is absorbed by the filter with a proposed novel resonator structure. The simulated and measured results are matched well.