Design of a Multiband Quasi-Yagi-Type Antenna With CPW-to-CPS Transition

A novel coplanar waveguide-fed planar quasi-Yagi antenna for multiband operation is presented in this letter. The antenna consists of a basic quasi-Yagi element and a coplanar-waveguide-to-coplanar-strip (CPW-to-CPS) transition, which can excite the odd-mode electric fields at the CPS line though th...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2011, Vol.10, p.1120-1123
Main Authors: Yang Ding, Jiao, Y. C., Fei, P., Li, B., Zhang, Q. T.
Format: Article
Language:English
Subjects:
Antenna measurements
Antenna radiation patterns
Antennas
Approximation
Bands
Circuits
Coplanar waveguides
Coplanar-waveguide-to-coplanar-strip (CPW-to-CPS) transition
Dipole antennas
multiband antenna
Noise levels
Planar structures
quasi-Yagi antenna
Reflection coefficient
Resonant frequency
Simulation
Transmission line measurements
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Summary:A novel coplanar waveguide-fed planar quasi-Yagi antenna for multiband operation is presented in this letter. The antenna consists of a basic quasi-Yagi element and a coplanar-waveguide-to-coplanar-strip (CPW-to-CPS) transition, which can excite the odd-mode electric fields at the CPS line though the CPW feed line. The proposed antenna can be used in multiband operation with directional radiation patterns whose front-to-back ratios approximate to 10 dB for desired bands. Its impedance bandwidth, determined by -10-dB reflection coefficient, covers numbers of present wireless communication systems, and the antenna can be simply integrated with other circuit components for its planar structure. Experimental data obtained from a laboratory prototype are also presented. The experimental results confirm the good performances observed by the electromagnetic simulations.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2011.2170950