GaAs PIN Diode Based 220 GHz Switch Design Using Flip Chip Technique

  • Xiaolin Hao
  • , Ao Zhang*
  • , Guodong Gu
  • , Shixiong Liang
  • , Xubo Song
  • , Lisen Zhang
  • , Peng Xu
  • , Jianjun Gao
  • , Zhihong Feng*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

GaAs PIN diode based single-pole single-throw (SPST) and single-pole double-throw (SPDT) switches with low insertion loss have been designed and fabricated up to 220 GHz. The on-state and off-state small-signal models of GaAs PIN diodes have been developed, and the parameter extraction procedure is explained in more detail. GaAs PIN diodes have been mounted on the quartz substrate using the flip chip technique to achieve integrated subterahertz switches. The developed SPST switch has 3.2 dB insertion loss and 29 dB isolation in the frequency range of 220 to 230 GHz. The measurement of the SPDT switch reveals an isolation of >20 dB and an insertion loss of <3.3 dB in the frequency range of 213 to 225 GHz. This switch boasts the highest operating frequency reported based on GaAs PIN diodes.

Original languageEnglish
Pages (from-to)100-106
Number of pages7
JournalIEEE Transactions on Terahertz Science and Technology
Volume15
Issue number1
DOIs
StatePublished - 2025

Keywords

  • Equivalent circuit model
  • GaAs PIN diode
  • parameter extraction
  • subterahertz switch

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