Linearly tapered slot antenna with defected sides for gain improvement

Seongmin Pyo, Dae Myoung In, In Chul Shin, Young Sik Kim

Research output: Contribution to journalLetterpeer-review


A new linearly tapered slot antenna (LTSA) with defected sides is proposed in this letter. Both sides are defected with half-dumbbell shape slots that may alter the surface current intensities on both sides. As the half-dumbbell size is increased, the 3-dB beamwidth of the proposed antenna is 4° and 6° lower in the E/H-plane, respectively, than these of the LTSA without defects. Accordingly, the measured gain is improved by up to 3.75 dB and the first side lobe level is lowered by about -10.8 dB and -5.8 dB in the E/H-planes, respectively.

Original languageEnglish
Pages (from-to)2655-2657
Number of pages3
JournalIEICE Transactions on Communications
Issue number10
Publication statusPublished - 2010 Oct


  • Antenna gain
  • Defected side
  • Linearly tapered slot antenna (LTSA)
  • Radiation pattern
  • Side lobe level
  • Tapered slot antenna (TSA)

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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