The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 2003
Filed:
Oct. 21, 1998
Markku Lipponen, Tampere, FI;
Nokia Mobile Phones Limited, Espoo, FI;
Abstract
The invention relates to a coaxial conductor having an inner conductor (S), an outer conductor (U) encasing the inner conductor (S) at least partly, and a dielectric (E) placed between the two. The coaxial conductor (K) is formed in a multi-layer circuit board (M) primarily by means of vias ( ) and strip conductors ( ). According to an embodiment of the coaxial conductor of the invention, the inner conductor (S) is formed substantially parallel to the board layers ( ) of the multi-layer circuit board (M), the inner conductor (S) is formed of at least one strip conductor ( ) or at least one electroconductive via ( ) or a combination of the same, and the outer conductor (U) is formed of at least four electroconductive vias ( ) and at least two strip conductors ( ). The dielectric (E) is at least partly formed of the material of the board layers ( ). The invention relates also to a method for manufacturing this coaxial conductor. The invention relates further to a wireless communication device having at least one multi-layer circuit board (M) and at least one of these coaxial conductors.