A Low-Loss High-Isolation Absorptive GaAs SPDT PIN Switch——ieee论文: A Low-Loss High-Isolation Absorptive GaAs SPDT PIN.PDF

Abstract  - Design  of  a  low-loss  high-isolation
absorptive GaAs  SPDT  PIN  diode  switch  at  24  GHz  is
presented. The  switch  incorporates a  total  of  6  PIN  diodes,
i.e.,  3  diodes  in  each  arm.  Two  of  the  diodes  are  for  high
isolation purposes and  the third  diode provides the matched
load  to  the  isolated  port.  The  measured  insertion  loss  and
isolation are better than 1.4  dB and 47 dB, respectively, in the
frequency band  22  to 26 GHI. The input and output return
losses are better than 12 dB in the same  frequency bund.

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