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:
May. 08, 2018
Filed:
Jul. 23, 2014
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Chunyun Jian, Ottawa, CA;
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm, SE;
Abstract
A multi-band RF multiplexer for routing transmit and receive signals in a radio RF front end. According to one aspect, the disclosure provides a multiplexer for routing transmit signals to an antenna and routing receive signals to a receiver. The multiplexer provides a first hybrid coupler having a first frequency response and a second hybrid coupler having a second frequency response. The second hybrid coupler is coupled to the first hybrid coupler by a plurality of splitters. The second frequency response complements the first frequency response to increase cancellation of two signals arriving at an output port of the second hybrid coupler from two different paths through the first and second hybrid couplers.