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Two‐dimensional standing‐wave microstrip array antenna
Author(s) -
Lee Choon Sae,
Brown James E.,
Ezzat Mohamed,
Jeong Seongheon
Publication year - 2017
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.30422
Subject(s) - microstrip antenna , patch antenna , optics , acoustics , antenna measurement , antenna aperture , physics , antenna array , ground plane , radiation pattern , microstrip , dipole antenna , bandwidth (computing) , array gain , antenna (radio) , engineering , electrical engineering , telecommunications
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