Multilayer lowpass filter with single point ground plane configu

Details Multilayer lowpass filter with single point ground plane configu Multilayer lowpass filter with single point ground plane configu

1997-01-31

1998-10-06

Ham, Sgungsook

Wave transmission lines and networks

Long line elements and components

Switch

333204, H01P 120, H03H 701

Patent

active

058183132

ABSTRACT:
A laminated lowpass filter (100) is disclosed. The filter (100) has: a stack of dielectric substrates (301-312) having a ground via (118); a pi network coupled between an input (202) and an output (202'); a first leg comprising a first transmission line (608) and a first capacitance (C1) connected to a top ground plane (GP1); a second leg comprising a second transmission line (608') and a second capacitance (C2) connected to a bottom ground plane (GP2); a middle leg including a transmission line (606) is between the first and second leg; the single point ground plane configuration prevents ground loops and minimizes the passage of stray signals through the laminated lowpass filter (100).

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