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Dual‐frequency operation of a coplanar waveguide‐fed dual‐slot loop antenna
Author(s) -
Chen WenShan,
Wong KinLu
Publication year - 2001
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.1213
Subject(s) - coplanar waveguide , slot antenna , multi band device , microwave , electrical impedance , impedance matching , optics , frequency band , slotted waveguide , physics , loop (graph theory) , antenna (radio) , materials science , electrical engineering , antenna measurement , engineering , telecommunications , mathematics , combinatorics
This paper proposes a novel dual‐frequency coplanar waveguide‐fed dual‐slot loop antenna. The two operating frequencies have the same polarization planes, and can easily be controlled by the perimeters of outer and inner rectangular‐slot loops in the proposed antenna. The two rectangular‐slot loops are both capacitively fed by a 50 Ω coplanar waveguide, and good impedance matching for the two operating frequencies with a frequency ratio ranging from about 1.33 to 1.54 can be achieved. Also, wide operating bandwidths (13.6–17.8% for the lower band and about 7% for the higher band) for the two frequencies are obtained. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 30: 38–40, 2001.