Multichannel transmitter combiners employing cavities having low output impedance
US5440281A · kind A · utility
30Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1993 |
| Grant date | Aug 8, 1995 |
| Priority date | — |
| Expiry date | Sep 7, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/2138
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multichannel combiner includes a plurality of input ports for connection to associated transmitters, narrow bandpass filters associated with each port, and an output port for connection to an antenna system. The output impedance of the filters is selected to be substantially lower than that used in conventional combiners, such that undesired reactance produced in the combiner over its operating range is much reduced. The combiner further includes an impedance transformer to match the low output impedance of the filters to the design impedance of the antenna system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.