Wideband microstrip-fed tapered slot antennas and phased array

Wen Hua Tu, Sang Gyu Kim, Kai Chang

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Two wideband tapered slot antennas are designed, fabricated, and tested. The first antenna, which is fabricated on a high dielectric constant substrate (εr = 10.2), shows a measured return loss of better than 10 dB from 1.6 to 12.4 GHz (7.7:1 bandwidth), and an antenna gain varying from 3.6 to 7.8 dBi. The second antenna is built on a low dielectric constant substrate (εr = 2.2), and demonstrates return loss of better than 10 dB from 1.8 to 15.2 GHz (8.4:1 bandwidth). The second antenna also has improved antenna gain, from 5 to 15.6 dBi, and is used to build a wideband 1 × 4 H-plane phased array with a total gain of 9-17 dBi and a beam steering angle of ±15° from 3 to 12 GHz.

Original languageEnglish
Pages (from-to)233-242
Number of pages10
JournalInternational Journal of RF and Microwave Computer-Aided Engineering
Issue number2
StatePublished - Mar 2007


  • Phased array
  • Tapered slot antenna
  • Ultra-wideband antenna


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