Constant gain modified antipodal vivaldi antenna with rake-like wires operating over 3.1-10.6 GHz

KÜÇÜKSARI Ö., ÇİMEN S., ÇAKIR G.

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, cilt.60, sa.5, ss.1205-1211, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 60 Sayı: 5
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1002/mop.31134
  • Dergi Adı: MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1205-1211
  • Anahtar Kelimeler: antipodal vivaldi antenna, constant gain antenna, flat gain antenna, ultra-wideband antenna, SLOT ANTENNA, DESIGN, PATTERN
  • Kocaeli Üniversitesi Adresli: Evet

Özet

The main aim of this study is to design an Ultra-Wide Band antenna with an almost constant level of gain over 3.1-10.6 GHz. A modified antipodal Vivaldi antenna with rake-like wires (called MAVARW-III), is designed for this goal. The MAVARW-III has two flared metal arms with rake-like wires printed on a dielectric substrate. Rake-like wires are primarily associated with balancing the gain over the operating bandwidth of the antenna. The proposed MAVARW-III has 7.90 dB minimum gain level over the bandwidth in simulations. The difference between the minimum and maximum value of the gain is <1.55 dB over whole frequency range in simulations. The proposed MAVARW-III is characterized both numerically and experimentally with a good agreement. The given design approach can be extended to relatively larger or smaller MAVARWIIIs to achieve almost constant gain level over desired other frequency bands.