Patent ID: 11916530
Assignee: RF360 SINGAPORE PTE. LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 20:
21. A filter circuit comprising:
a first filter stage comprising:
a first capacitor coupled in a series path between a first port of the filter circuit and a second port of the filter circuit;
a first inductor-capacitor (LC) tank circuit;
a second capacitor coupled between a first terminal of the first capacitor and the first LC tank circuit, the first LC tank circuit being coupled between the first capacitor and a reference potential node; and
a third capacitor coupled between a second terminal of the first capacitor and the first LC tank circuit; and

one or more other filter stages coupled to the first filter stage, wherein the one or more other filter stages comprise a second filter stage having:
a fourth capacitor in the series path between the first port and the second port of the filter circuit; and
a second LC tank circuit coupled in the series path between the first port and the second port of the filter circuit.