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A modified composite right/left‐handed unit cell for multiband applications
Author(s) -
Mazani Zahra,
Abdipour Abdolali,
Afrooz Kambiz
Publication year - 2021
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.32938
Subject(s) - insertion loss , power dividers and directional couplers , electrical engineering , planar , return loss , transformer , composite number , ground plane , materials science , engineering , electrical impedance , optoelectronics , voltage , computer science , computer graphics (images) , antenna (radio) , composite material
A new planar 3‐band composite right/left‐handed (CRLH) unit cell is presented using an interdigital capacitor, two grounded stubs and etching a defected ground structure on the ground plane. A 3‐band filter is designed using this CRLH unit cell. In addition, with nonlinear dispersion relation of the 3‐band unit cell, it can be used as a hexa‐band quarter wave impedance transformer. Using this functionality, a planar hexa‐band power splitter is designed with relatively good performance. A fabricated prototype of the power divider is measured and the experimental results indicate that the power divider achieved better than 10 dB of return loss and the insertion loss is better than 6 dB over six‐frequency bands.