Miniaturized multi-layer coplanar wave guide low pass filter

Details Miniaturized multi-layer coplanar wave guide low pass filter Miniaturized multi-layer coplanar wave guide low pass filter

2005-01-25

2005-01-25

Callahan, Timothy P. (Department: 2816)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S161000, C438S205000, C438S622000

Reexamination Certificate

active

06847273

ABSTRACT:
The present invention discloses a miniaturized multi-layer coplanar wave guide low pass filter including: a substrate; a first dielectric layer formed on and enclosing said substrate; a first metallic pattern layer formed on said first dielectric layer; a second dielectric layer formed on said first metallic pattern layer; wherein several via holes being formed on said second dielectric layer; a second metallic pattern layer formed on said second dielectric layer, wherein said via holes formed on said second dielectric layer are filled up with the metal thereof; a third dielectric layer formed on said second metallic pattern layer, wherein several via holes being formed on said third dielectric layer; and a third metallic pattern layer formed on said third dielectric layer, wherein said via holes formed on said third dielectric layer are filled with the metal thereof.

REFERENCES:
patent: 5387888 (1995-02-01), Eda et al.
patent: 5706022 (1998-01-01), Hato
patent: 6170154 (2001-01-01), Swarup
patent: 6174803 (2001-01-01), Harvey
patent: 6465297 (2002-10-01), Henry et al.
patent: 6660618 (2003-12-01), Chen et al.

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