Millimeter‐wave wide beamwidth aperture–coupled antenna designed by mode synthesis

Authors:
Publisher website
Google Scholar
Abstract
In this letter, a wide beamwidth aperture–coupled antenna is designed by mode synthesis at the millimeter‐wave frequency. To obtain the wide beamwidth, a TM010 mode and a zeroth‐order resonance mode of a metamaterial antenna are combined. A theoretical equation of synthesized radiation pattern is derived to find the conditions to obtain the widest E‐plane half power beamwidth (HPBW). By utilizing the equation, the optimal phase difference and injected power ratio to two antennas are found. The results are verified by a derived equivalent circuit and a full wave simulator. In addition, an aperture‐coupled feed that has an advantage to minimize the interference between a feed and an antenna has been used. Finally, the antenna with wide beamwidth is designed and fabricated at 35 GHz. The radiation efficiency and E‐plane HPBW of the designed antenna are simulated as 86.7% and 138°, respectively, which roughly agree with the measured results. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1255–1259, 2015
Funding Information
  • National Research Foundation of Korea (NRF-2013R1A2A2A05005640)

This publication has 8 references indexed in Scilit: