Low‐profile circularly polarised loop antenna assisted with an effective PMC bandwidth. Issue 16 (1st August 2013)

• Record Type: Journal Article
• Authors: Li, H.; Xu, K.W.; Wang, X.B.; Kanan, R.; Ran, L.X.
• Is Part Of: Electronics letters. Volume 49:Issue 16(2013)
• Page Start: 978
• Page End: 979
• Publication Date: 2013-08-01
• Subjects: loop antennas -- photonic band gap -- polarisation; ultra‐low‐profile circularly polarised loop antenna -- electromagnetic band gap -- EBG surface reflector -- perfect magnetic conductor -- PMC -- axial ratio -- voltage standing wave ratio -- VSWR; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2013.1601
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : Proposed is an ultra‐low‐profile loop antenna backed by an electromagnetic bandgap (EBG) surface reflector, where the EBG surface can effectively exhibit the property of a perfect magnetic conductor (PMC) inside a deliberately designed bandwidth. It is shown that, assisted by the effective PMC bandwidth, while the proposed antenna is with a 0.07‐ λ spacing between the loops and the EBG reflector, its axial ratio (AR) and voltage standing wave ratio (VSWR) performances are significantly improved. Experimental measurements show that the prototype antenna has a 3 dB AR bandwidth of 17% with an input VSWR less than 1.6. The proposed approach can find a wide range of low‐profile circularly polarised (CP) antenna applications.