Premium
Isolation enhancement in Chinese character antenna array using simple defect ground structure
Author(s) -
Niu Zicheng,
Zhang Hou
Publication year - 2019
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.21927
Subject(s) - optics , decoupling (probability) , enhanced data rates for gsm evolution , antenna (radio) , character (mathematics) , isolation (microbiology) , computer science , acoustics , physics , engineering , mathematics , geometry , telecommunications , control engineering , microbiology and biotechnology , biology
This article presents the Gui‐shaped Chinese character array antenna (GCCAA), which is loaded with the L‐shaped defect ground structure (LDGS) to improve isolation between the antennas. The GCCAA is obtained by arranging two Tu‐shaped antennas up and down. By etching a pair of LDGS on the ground, the direction of the coupling current is changed on the ground. Most importantly, the LDGS is not etched in the middle of the antenna elements, but loaded along the outer edge of the GCCAA, which not to destroy the appearance of the GCCAA and maintain the compact nature of the Chinese character. The measured results show that LDGS improves isolation from 15.4 to 37.4 dB when the antennas are placed with a 0.065 λ 0 edge‐to‐edge distance. Meanwhile, it has little influence on reflection coefficient and radiation patterns. The decoupling technique is simple and straightforward which can be easy applied in Chinese character array antenna.