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A Design of 90° Hybrid Coupler with Low Pass Filter Attenuation  

Lee, Su-Yeol (Division of Information Technology Engineering, Soonchunhyang Univ.)
Kang, Jung-Hoon (Division of Information Technology Engineering, Soonchunhyang Univ.)
Park, Kyu-Ho (Korea Electronics Technology Institute Wireless Communication Research Center)
Ahn, Dal (Division of Information Technology Engineering, Soonchunhyang Univ.)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.15, no.2, 2004 , pp. 178-182 More about this Journal
Abstract
In this paper, a 90$^{\circ}$ hybrid coupler with both power division and harmonic rejection characteristics is presented by applying a LPF characteristic to a conventional 90$^{\circ}$ hybrid. Since a conventional 90$^{\circ}$ hybrid coupler operates as a power divider/combiner using phase difference, it does not suppress higher order harmonics when it is incorporated with nonlinear amplifier. This requires an additional filter to take into account of the harmonics. The proposed 90$^{\circ}$hybrid coupler power provides the division capability and proper phase difference, as well as harmonic suppression characteristic by integrating LPF characteristic.
Keywords
90$^{\circ}$ Hybrid Coupler; Low Pass Filter;
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  • Reference
1 /
[ Robert E.Collin ] / Foundations for Microwave Engineering
2 A Power Amplifier with Efficiency Improved Using Defected Ground Structure /
[ Jong-Sik Lim;Ho-Sup Kim;Jun-Seok Park;Dal Ahn;Sangwook Nam ] / IEEE Microwave and Wireless Components Lett   DOI
3 /
[ G.L.Matthaei;L.Young;E.M.T.Jones ] / Microwave Filters, Impedance-matching Networks, and Coupling Structures
4 /
[ J.A.G.Malherbe ] / Microwave Transmission Line Couplers
5 /
[ David M.Pozar ] / Microwave Engineering