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

doi:10.1587/transele.E97.C.1014

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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

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Keywords: printed circuit board, multi-layered substrate, coupled line, ground through-hole, compensating element

JOURNAL RESTRICTED ACCESS

2014 Volume E97.C Issue 10 Pages 1014-1020

DOI https://doi.org/10.1587/transele.E97.C.1014

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Abstract

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.

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