Broadband and low-profile Yagi–Uda antenna composed of inverted-F and inverted-L shaped elements

✍ Scribed by Yujiro Taguchi; Qiang Chen; Kunio Sawaya

• Book ID: 102159220
• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: English
• Weight: 133 KB
• Volume: 85
• Category: Article
• ISSN: 8756-6621
• DOI: 10.1002/ecja.1066

✦ Synopsis

Abstract

A broadband Yagi–Uda antenna composed of an excited inverted‐F element and two parasitic inverter‐L elements, which is used for the antennas of the SSR (secondary surveillance radar) and equipped on an airplane, is proposed. By locating a director close to the excited inverted‐F element, such as about 0.05λ~0~ for the array space between these elements, an antenna having a performance of the bandwidth of 18.8% and unidirectional pattern in this bandwidth is obtained with a total dimension of about 0.1λ~0~ (height) × 0.4λ~0~ (length). The validity of the calculated values is experimentally confirmed. © 2001 Scripta Technica, Electron Comm Jpn Pt 1, 85(1): 43–48, 2002