X-band Three-stub Filter Embedded SPDT/SP4T Switches Using Packaged PIN Diodes and Novel Resonators

• Main Authors: Tsai, Guo-Ding, 蔡國鼎
• Other Authors: Chang, Chi-Yang
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/jdk45j

碩士 === 國立交通大學 === 電信工程研究所 === 103 === A single pole double throw (SPDT) and single pole four throw (SP4T) switch using the packaged PIN diodes for X-band application is proposed. At first, the S domain synthesis method is applied to design a Chebyshev three-stub filter. Next, the center stub of the filter is substituted by a PIN diode incorporation with the peripheral circuits to implement a single pole single throw (SPST) switch. Finally, two of the SPST switches can be merged as a SPDT switch. The SPDT switch is embedded in two Chebyshev three-stub filters where the center 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. As result, the designing procedures of SP4T switch are similar to that of the SPDT switch.