Size reduction and harmonic suppression of rat-race hybrid coupler using defected ground structure

In this letter, a defected ground structure (DGS) is applied to design a compact microstrip rat-race hybrid coupler. The proposed structure can achieve both a significant reduction of size and harmonic signal. By embedding the DGS section, it is observed that the resonant frequency of the hybrid cou...

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Veröffentlicht in:	IEEE microwave and wireless components letters 2004-01, Vol.14 (1), p.7-9
Hauptverfasser:	Sung, Y.J., Ahn, C.S., Kim, Y.-S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Antenna measurements Applied sciences Circuit properties Coupling circuits Electric, optical and optoelectronic circuits Electronics Etching Exact sciences and technology Grounds Harmonics Harmonics suppression Impedance Insertion loss Joining Loss measurement Microstrip Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits Microwave devices Microwaves Noise levels Resonant frequencies Resonant frequency Size reduction
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