Transmission line type noise filter with small size and...

Details Transmission line type noise filter with small size and... Transmission line type noise filter with small size and...

2005-06-28

2005-06-28

Ham, Seungsook (Department: 2817)

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

C333S184000, C333S185000

Reexamination Certificate

active

06911880

ABSTRACT:
A noise filter (1) has a first impedance element (2) having an impedance value Z1, a second impedance element (3) having an impedance value Z2, a third impedance element (4) having an impedance value Z3, a first anode terminal (5), a second anode terminal (6), and a cathode terminal (7). Z1<Z2and Z1<Z3are satisfied. Both ends of a central conductor (2a) of the first impedance element (2) are connected to a first node (8) and a second node (9), respectively. Both ends of the second impedance element (3) are connected to the first node (8) and the first anode terminal (5), respectively. Both ends of the third impedance element (4) are connected to the second anode terminal (6) and the second node (9), respectively. The central conductor (2a) and a cathode conductor (2b) of the first impedance element (2) form a transmission line structure having the impedance value Z1. The cathode conductor (2b) is connected to the cathode terminal (7).

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