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US 6,847,274 B2Granted
Multilayer coaxial structures and resonator formed therefrom
AssigneeNokia Corporation
InventorsOlli Salmela, Ilpo Kokkonen
Life of this patent
Estimating the term…
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.
Claims23
A resonator comprising:
- a first conductor including a plurality of line strips disposed along a lengthwise direction on different layers of the circuit board, said plurality of line strips being connected by conductive via posts to provide a conductive pipe having a round cross-section,
- a second conductor disposed along the lengthwise direction into a center of the first conductor;
- and
- conductive elements between the first conductor and the second conductor.
1 more element
A method of manufacturing a coaxial structure, the method comprising the steps of:
- providing a plurality of first line strips arranged in successive layers on a circuit board to form a hollow member by arranging said plurality of first line strips in a shape of a circle;
- connecting the plurality of first line strips to each other by via posts;
- inserting at least one second line strip in a center of the plurality of first line strips;
- and
- mounting the at least one second line strip to the plurality of first line strips by at least one conductive connecting member.
2 more elements
A circuit board transmission line, comprising:
- a first conductor including a plurality of first line strips disposed along a lengthwise direction on different layers of a circuit board, said plurality of first line strips being connected by conductive via posts to provide a conductive pipe having a round cross-section, and
- a second conductor including at least one second line strip disposed along the lengthwise direction into a center of the first conductor;
- and
- conductive elements connecting the first conductor to the second conductor.
1 more element
A coaxial structure comprising:
- a plurality of first conducting means for conducting a current arranged in successive layers on a circuit board to provide a hollow member comprising a circular cross section;
- connecting means for connecting the plurality of first conducting means to each other
- second conducting means for conducting a current disposed in a hollow center of the plurality of the first conducting means;
- and
- conductive mounting means for mounting the second conducting means to the first conducting means.
2 more elements
Dependencies are inferred from the claim text.