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Gain and bandwidth enhancements of sequential‐fed circularly polarized patch antenna array using multiple parasitic elements
Author(s) -
Tran Huy Hung,
Park Hyun Chang
Publication year - 2020
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22319
Subject(s) - broadside , array gain , antenna array , wideband , high gain antenna , bandwidth (computing) , microstrip antenna , patch antenna , antenna gain , parasitic element , physics , optics , antenna (radio) , computer science , electronic engineering , engineering , antenna factor , optoelectronics , telecommunications
This paper presents a circularly polarized (CP) antenna array with wideband operation and high gain characteristics. The single array element is composed of a slotted CP patch and parasitic elements. It has been found that besides improving the operating bandwidth (BW), properly choosing a number of parasitic elements can also contribute to a significant increase in the antenna gain over the entire operating band. For further boost in the performance, multiple array elements are arranged in 2 × 2 configuration and fed by a sequential‐phase feeding network. In comparison with the related works in the literature, the proposed design shows approximately 3‐dB higher gain. The design concept has been validated by experiments. The fabricated array has a measured operating BW of 28% (4.6‐6.1 GHz) and a peak broadside gain of 15.8 dBic.