Miniaturization of Microstrip Branch-Line Coupler With Dual Transmission Lines

The dual transmission lines are proposed to replace conventional quarter-wavelength transmission lines for a compact microstrip branch-line coupler in this study. The developed coupler can be easily fabricated on the printed circuit board without lumped element; moreover, its size is greatly reduced...

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Veröffentlicht in:	IEEE microwave and wireless components letters 2008-03, Vol.18 (3), p.185-187
Hauptverfasser:	TANG, Ching-Wen, CHEN, Ming-Guang, TSAI, Chih-Hung
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Branch-line coupler Circuit boards Circuit properties Circuit simulation Coupling circuits Distributed parameter circuits Electric, optical and optoelectronic circuits Electronic equipment and fabrication. Passive components, printed wiring boards, connectics Electronics Exact sciences and technology Impedance Joining Microstrip Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits Microwaves Miniaturization Planar transmission lines Power transmission lines Printed circuits Simulation Transmission line measurements Transmission lines
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Beschreibung
Zusammenfassung:	The dual transmission lines are proposed to replace conventional quarter-wavelength transmission lines for a compact microstrip branch-line coupler in this study. The developed coupler can be easily fabricated on the printed circuit board without lumped element; moreover, its size is greatly reduced compared to the conventional branch-line coupler. Furthermore, simulated and measured frequency responses match well to validate the proposed coupler with dual transmission lines.
ISSN:	1531-1309 2771-957X 1558-1764 2771-9588
DOI:	10.1109/LMWC.2008.916798