Tunable dual band antenna with multipattern reconfiguration for vehicular applications. Issue 12 (11th October 2019)

• Record Type: Journal Article
• Authors: Ashvanth, Balu; Partibane, Bactavatchalame; Nabi Alsath, Mohammed Gulam; Kalidoss, Rajakani
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 29:Issue 12(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-10-11
• Subjects: multibeam antenna -- reconfigurable antenna -- tunable dual band antenna; Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.21973
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract: This article presents the design of a pattern switchable patch antenna for vehicular applications. The proposed antenna has a square patch that is divided into four triangular regions using diagonal rows of vias. The triangular regions are separately excited using a coaxial feed to achieve frequency and pattern reconfiguration. Each triangular section of the antenna has "U" shaped and inner rectangular strips to obtain two resonant frequencies of 2.4 and 3.5 GHz, respectively to cover the part of WLAN, WiMax, and car‐to‐car communication ranging from 3.4 to 3.8 GHz. In order to cover the maximum bandwidth of WLAN and WiMax standards, frequency tuning is done using a varactor diode. Upon exciting any one of the port, the antenna generates a tilted beam with a peak gain of 6.8 and 5.8 dBi at 2.45 and 3.5 GHz, respectively. A full azimuth beam coverage can be achieved by exciting the ports sequentially. The antenna is also capable of generating eight other beams using multiple feed excitations with the maximum gain of 8.4 and 9.4 dBi for the axial beam at 2.45 and 3.5 GHz, respectively.