A compact V-band star mixer using compensated overlay capacitors in dual baluns

Tsung Yu Yang, Wan Ru Lien, Chia Chun Yang, Hwann Kaeo Chiou

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

A compact V-band star monolithic microwave integrated circuit mixer has been designed using compensated overlay capacitors in dual baluns for the input of local oscillator and radio frequency ports. The reduced-size balun can be simply realized by shunting overlay capacitor in either input or end of balun. The proposed V-band star mixer achieved a conversion loss of 8.6 dB, the port-to-port isolations better than 18 dB, and an input 1-dB compression point higher than 7.7 dBm at 60 GHz. Moreover, better than 50% length reduction of dual balun was achieved, and chip size of star mixer including pads was less than 0.68 × 0.59 mm 2.

Original languageEnglish
Article number4266858
Pages (from-to)537-539
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Volume17
Issue number7
DOIs
StatePublished - Jul 2007

Keywords

  • Dual balun
  • Overlay capacitor
  • PHEMT
  • Reduced-size
  • Star mixer
  • Star quad diode

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