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A simple design of broadband tapered leaky‐wave antenna
Author(s) -
Losito Onofrio
Publication year - 2007
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.22860
Subject(s) - leaky wave antenna , broadband , microwave , standing wave ratio , engineering , microstrip antenna , antenna (radio) , simple (philosophy) , bandwidth (computing) , acoustics , electronic engineering , optics , physics , telecommunications , philosophy , epistemology
Abstract A new layout of leaky‐wave antennas based on tapered design has been proposed and investigated. The new curve tapered leaky‐wave antenna (LWA) was designed running a simple procedure which use an FDTD code, and using a physical grounding structure along the length of the antenna, which allows to use only half of the structure, the adoption of a simple feeding, and the reduction of sidelobes. The good performance of this new tapered microstrip LWA are mainly wider band of 33% for VSWR <2, higher gain (12 dBi) and higher efficiency (up to 85%). Moreover if the relative dielectric constant of the substrate approaches 1 (ϵ r =ϵ 0 ), the leaky wave antenna bandwidth becomes much wider improving its performance. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2833–2838, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22860

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