Waveguide in multilayer structures
AssigneeNokia Corporation
InventorsOlli Salmela, Ilpo Kokkonen
Life of this patent
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Abstract
The idea of the invention is to fabricate a multilayer coaxial transmission line into a printed circuit. The outermost conductor is fabricated by conductive conduit strips in different layers, using conductive via posts in isolation layers connecting the strips. The innermost conductor can be a single conductive strip or multiple strips in different layers connected together through conductive via posts.
Claims18
A circuit board transmission line, characterized in that the transmission line includes (a) a first conductor comprising several line strips placed lengthwise on different layers of the circuit board, which several line strips are connected by conductive via posts so that they form a conductive pipe, and (b) a second conductor comprising a line strip placed lengthwise essentially into the center of the first conductor.
A resonator, characterized in that the resonator includes (a) a first conductor comprising several line strips placed lengthwise on different layers of the circuit board, which several line strips are connected by conductive via posts so that they form a conductive pipe, and (b) a second conductor placed lengthwise essentially into the center of the first conductor.
Dependencies are inferred from the claim text.