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:
Sep. 05, 2017
Filed:
Mar. 19, 2013
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Ola Tageman, Göteborg, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
A frequency demultiplexer comprising an input part () with an input port (), a low pass filter () and a band-pass filter () with output ports (). The input part (), the low-pass filter () and the band-pass filter () comprise open waveguide sections, and the band-pass filter () comprises gap-coupled resonators (). The input part () and the low-pass filter () connect to the same resonator (), the connection () of the low-pass filter () being at a first maximum distance (L) from a center point (N) of the resonator and the connection () of the output port () being at a second maximum distance (L) from said center point (N) of the resonator. The center point (N) corresponds to a wave node of a wavelength λ, where λ=2d/M, M is a positive integer value and d is the shortest end-to-end distance along the resonator.