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:
Jun. 24, 2014
Filed:
Apr. 25, 2013
Space Systems/loral, Llc, Palo Alto, CA (US);
Stephen D. Berry, San Ramon, CA (US);
George Fiedziuszko, San Jose, CA (US);
Jonathan Chang, Palo Alto, CA (US);
Space Systems/Loral, LLC, Palo Alto, CA (US);
Abstract
A multiplexer includes a filter channelizer having at least two output filters, each output filter being coupled with a respective hybrid coupler. The multiplexer channelizes an input radio frequency (RF) band of electromagnetic energy into a set of output ports. Each hybrid coupler includes an input port (port 1), two output ports and an isolated port (port 4). Each output filter is coupled to a first one of the two output ports of a respective hybrid coupler, a second one of the two output ports being connected to an open stub microstrip transmission line. The respective hybrid coupler is coupled in a daisy chain, by way of port 1 and port 4, with one or more of the input of the multiplexer, and at least one other hybrid coupler. Advantageously, each output channel may include no more than one filter and no more than one hybrid coupler.