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Annular CPW‐FED directivity‐variable array antenna loaded with Schottky diodes
Author(s) -
Yang DaeGeun,
Kim KyungSoo,
Kim DongJu,
Jang EunSeok,
Kim CheYoung
Publication year - 2018
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.31263
Subject(s) - directivity , optoelectronics , schottky diode , antenna (radio) , materials science , varicap , dipole antenna , radiation pattern , optics , variable capacitor , coplanar waveguide , coaxial antenna , antenna measurement , diode , electrical engineering , physics , telecommunications , engineering , voltage , capacitance , capacitor , electrode , quantum mechanics , microwave
A novel high‐speed directivity‐variable array antenna is designed, fabricated and characterized. The passive LC elements and varactor/PIN diodes used in conventional antennas are replaced with an annular coplanar waveguide (CPW) and Schottky diodes, in order to overcome the problem of out‐of‐band radiation. The proposed antenna consists of 3 dipole antennas on the upper side of the substrate, and a CPW with 4 Schottky diodes on the bottom side of the substrate. The antenna was designed and characterized at 2.45 GHz. Measurement results demonstrate that the proposed antenna exhibits beam steering and mirror‐image pattern pairs capability.