Compact microstrip hybrid coupled input multiplexer
US8761026B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2013 |
| Grant date | Jun 24, 2014 |
| Priority date | — |
| Expiry date | Apr 25, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/184
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.