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A PCB Integrated Multi-layered Strip Line Tandem Coupler Using Compensating Ground Through-Hole Elements
Takeshi YUASA Yukihiro TAHARA Tetsu OWADA Naofumi YONEDA Yoshihiko KONISHI Moriyasu MIYAZAKI
IEICE TRANSACTIONS on Electronics
Publication Date: 2014/10/01
Online ISSN: 1745-1353
Type of Manuscript: PAPER
Category: Microwaves, Millimeter-Waves
printed circuit board, multi-layered substrate, coupled line, ground through-hole, compensating element,
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This paper presents a printed circuit board (PCB) integrated multi-layered strip line tandem coupler, which used simple compensating ground through-hole (GTH) elements. The GTH elements on one end of the coupled line can generate additional capacitance between the signal line and the ground, which effectively compensates for the parasitic capacitance around the crossed signal lines on the opposite end of the coupled line. It has been experimentally demonstrated that the proposed coupler fabricated for the X-band is effective to improve both the reflection and the isolation characteristics.