Spiral couplers manufactured by etching and fusion bonding

Metal working – Method of mechanical manufacture – Electrical device making

Reexamination Certificate

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C333S116000

Reexamination Certificate

active

07127808

ABSTRACT:
A microwave circuit utilizes a spiral-like coupler configuration to achieve the functionality of a traditional coupler with higher density and lower volume. A plurality of substrate layers having metal layers disposed on them are bonded to form the package. A plurality of groundplanes may be used to isolate the spiral-like shape from lines extending out to contact pads or other circuitry.

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