✦ LIBER ✦

Low-profile frequency agile directive antenna based on an active metasurface

✍ Scribed by Shah Nawaz Burokur; Jean-Pierre Daniel; Philippe Ratajczak; André de Lustrac

Publisher: John Wiley and Sons
Year: 2011
Tongue: English
Weight: 968 KB
Volume: 53
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.26290

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The modeling and characterization of a broadband frequency agile metamaterial‐based cavity antenna around 2 GHz is reported in this article.An electronically active metasurface composed of simultaneously a capacitive and an inductive grid is used as a partially reflecting surface (PRS), and the cavity is excited by an array of four wideband L‐strip fed printed microstrip patch antennas. The incorporation of variable capacitance in the metasurface helps to tune the resonance frequency and the phase characteristics. Measurements performed on a fabricated prototype present a reconfigurable resonance frequency between 1.9 and 2.31 GHz and a directivity of 18 dBi for a low profile cavity thickness of λ/10 at 2 GHz. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2291–2295, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26290

📜 SIMILAR VOLUMES

Low-profile resonant cavity antenna base

Low-profile resonant cavity antenna based on an in-phase metamaterial surface

✍ Yuehe Ge; Karu P. Esselle 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 170 KB

## Abstract A partially reflective metamaterial surface is designed to have in‐phase reflection property for the purpose of reducing the height of resonant cavity antennas. Since the reflection phase of the in‐phase is close to 0° at the operating band, the cavity height, that is, the distance betw

An inexpensive low frequency impedance a

An inexpensive low frequency impedance analyzer based on direct sampling

✍ E. Skou 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 311 KB

Ahatraet-An impedance analyzer is described which used direct sampling of the stimulating and response signals into a laboratory data acquisition system. The analyzer uses subsampling in order to extend the range to frequencies higher than the sampling frequency. An algorithm which computes the opti