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Vertically Integrated Combline Filters in Multilayer PCB

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posted on 10.08.2021, 07:40 by Tinus StanderTinus Stander
Vertical stacking of planar line resonators in multilayer media is an effective footprint reduction technique for high order filters, but strong broadside line coupling often negates the possibility of narrowband filters. It is shown that vertically stacking combline resonators with rotated centerlines leads to moderate bandwidth filters. Four variations of a 5th order filter are demonstrated, achieving 1.92 – 3.3 dB IL over 10% FBW around 10 GHz while occupying between 6.62 – 22.47 mm2 surface area on a 7 layer PCB.

History

Email Address of Submitting Author

tinus.stander@up.ac.za

ORCID of Submitting Author

0000-0003-1600-6135

Submitting Author's Institution

University of Pretoria

Submitting Author's Country

South Africa

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