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:
Jul. 10, 2000
Göran Snygg, Partille, SE;
Sune Johansson, Växjö, SE;
Bengt Svensson, Mölndal, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
The invention relates to a method for producing a microwave filter ( ), comprising making at least one through-cutout ( ) in a first electrically conductive plate ( ) shaped as a rectangle, with a short side and a long side, inserting the first plate ( ) between a second ( ) and a third ( ) electrically conductive plate ( ), the first plate being arranged parallel to the second and the third plate, making electrical connections ( ) between said three plates for interconnecting those edge surfaces on the plates which coincide with the direction of propagation of the electrical signals, as a result of which a space comprising one or more cavities is formed. The first plate ( ) is arranged so that the extent of its short side coincides with the E-field of the microwave signals when they propagate in the filter ( ), and the extent of its long side coincides with the direction of propagation of the electrical signals.