A miniaturized quasi-Yagi antenna using defected ground structure and double dog-bone driver

Turan G., ODABAŞI H.

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, vol.64, no.2, pp.358-362, 2022 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 64 Issue: 2
  • Publication Date: 2022
  • Doi Number: 10.1002/mop.33096
  • Journal Name: MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, DIALNET, Civil Engineering Abstracts
  • Page Numbers: pp.358-362
  • Karadeniz Technical University Affiliated: No

Abstract

A miniaturized quasi-Yagi antenna is presented using a defected ground structure and double dog-bone driver. The antenna has a simplified feeding structure. With the help of the dog-bone driver and slotted ground structure antenna's resonance frequency is lowered. Thus, the miniaturization is achieved. Additional angled dog-bone driver and circular patches in the ground improve impedance matching and bandwidth characteristics. The overall size of the proposed miniaturized quasi-Yagi antenna is 0.29 lambda Lx0.3 lambda L, where lambda L is the wavelength at the lowest operating frequency( divide S11 divide <=-10 dB). The antenna achieves divide S11 divide <=-10 dB between 2.35 and 2.65 GHz in the simulation, 2.36 and 2.63 GHz in the measurement. The antenna has a gain of 3.8-5.4 dBi, over 81% total efficiency, and stable end-fire radiation characteristics in the frequency range of operation. The proposed antenna is a good candidate for compact portable wireless communication systems.