Parallel via to improve the impedance match for embedded common mode filter design

• Main Authors: Chen Chung-Hao Joseph, Zhu Jianfang Olena, Yepes Ana M
• Format: Patent
• Language: English
• Published: 14.02.2017
• Subjects: BASIC ELECTRIC ELEMENTS; BASIC ELECTRONIC CIRCUITRY; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; PRINTED CIRCUITS; RESONATORS; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE; WAVEGUIDES

A parallel via design is disclosed to improve the impedance match for embedded common mode choke filter designs. Particularly suited to such designs on four-layer printed circuit boards, the parallel via design effectively suppresses the reflection of the differential pair. By connecting the vias in...