New Compact antenna based on simplified CRLH‐TL for UWB wireless communication systems. Issue 3 (11th January 2016)

• Record Type: Journal Article
• Authors: Alibakhshi‐Kenari, Mohammad; Naser‐Moghadasi, Mohammad; Ali Sadeghzadeh, Ramazan; Singh Virdee, Bal; Limiti, Ernesto
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 26:Issue 3(2016)
• Page Start: 217
• Page End: 225
• Publication Date: 2016-01-11
• Subjects: patch antenna -- ultra‐wideband antenna -- simplified composite right/left‐handed transmission line (SCRLH) -- wireless communication systems -- coplanar waveguide (CPW); Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.20956
• Languages: English
• ISSNs: 1096-4290

Abstract

ABSTRACT: This letter presents the experimental results of a novel planar antenna design which is synthesized using simplified composite left/right‐handed transmission‐line (SCRLH‐TL), which is a version of a conventional composite left/right handed‐transmission‐lines (CRLH‐TL), however, with the omission of shunt‐inductance in the unit‐cell. SCRLH‐TL exhibits a right‐handed response with nonlinear dispersion properties and a smooth Bloch‐impedance distribution. Arranged within the inner slot of the antenna are three smaller rectangular patch radiators. Each patch radiator is embedded with an E‐shaped notch, and located in the antenna conductor is a larger E‐shaped notch next to the 50‐Ω termination. The E‐shaped notches constitute SCRLH‐TL property. The gap in the slot between the smaller patches and the conductor next to the larger E‐shaped notch determines the impedance bandwidth of the antenna. The dimensions of the smaller patches determine the radiation characteristics of the antenna. The antenna is excited using a conductor‐backed coplanar waveguide transmission‐line. The antenna covers a bandwidth of 7.3 GHz between 0.7 GHz and 8GHz, which corresponds to 167.81%. In this band, the antenna resonates at 4.75 GHz and 7 GHz; the gain and radiation efficiency at these frequencies are 4 dBi—80% and 3.6 dBi—73%, respectively. The antenna's performance was validated through measurement. The antenna has dimensions of 0.0504 λ 0 × 0.0462 λ 0 × 0.0018 λ 0, where λ 0 is free‐space wavelength at 700 MHz. © 2016 Wiley Periodicals, Inc. Int J RF and Microwave CAE 26:217–225, 2016.