Two‐dimensional standing‐wave microstrip array antenna. Issue 4 (April 2017)

• Record Type: Journal Article
• Authors: Lee, Choon Sae; Brown, James E.; Ezzat, Mohamed; Jeong, Seongheon
• Is Part Of: Microwave and optical technology letters. Volume 59:Issue 4(2017:Apr.)
• Page Start: 927
• Page End: 930
• Publication Date: 2017-04
• Subjects: standing‐wave antenna -- antenna feed -- microstrip array antenna; Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.30422
• Languages: English
• ISSNs: 0895-2477

Abstract

ABSTRACT: The concept of standing‐wave array antennas is presented. In this new array structure, a high‐order standing wave is excited to produce a focused beam. To verify the concept in a simple manner, a five‐patch microstrip array is considered. A cavity model is used to illustrate the principle of antenna operation. Measured radiation patterns and input impedances agree relatively well with the theoretical values to confirm the concept of a standing wave in the antenna cavity. The bandwidths of the array antenna are about the same as those of a comparable single‐patch antenna. The impedance bandwidth of the array structure is 0.9% while the 3‐dB gain bandwidth is 2.7%. The aperture efficiency is about 79% assuming the aperture area includes the ground plane. © 2017 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:927–930, 2017