Gain enhanced pattern reconfigurable planar Yagi‐Uda antenna on coplanar structure. Issue 25 (1st December 2013)

• Record Type: Journal Article
• Authors: Raman, S.; Timmons, N.; Morrison, J.
• Is Part Of: Electronics letters. Volume 49:Issue 25(2013)
• Page Start: 1593
• Page End: 1595
• Publication Date: 2013-12-01
• Subjects: antenna radiation patterns -- planar antenna arrays -- Yagi antenna arrays -- omnidirectional antennas; gain‐enhanced pattern reconfigurable planar yagi‐uda antenna -- coplanar structure -- omnidirectional pattern -- high‐gain directive pattern -- orthogonal plane -- reflector element -- CST Microwave Studio -- dielectric constant -- R&S ZVB8 network analyser -- gain variation -- reflector parameter -- director parameter; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2013.3177
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A gain enhanced planar Yagi‐Uda antenna with pattern reconfiguration is presented. The prototype provides an omnidirectional pattern as well as a high‐gain directive pattern, which can be reconfigured on two orthogonal planes. For the first time, the principle of a Yagi‐Uda antenna combined with pattern reconfiguration is implemented without complexity on a planar prototype. The pattern reconfiguration is achieved by alternately switching the driven and reflector elements of the Yagi‐Uda antenna. The prototype concept was simulated using CST Microwave Studio, fabricated on a substrate of dielectric constant 4.4 and tested using an R&S ZVB8 network analyser. The gain variation with the reflector and director parameters is also analysed and presented.