System for eight-phase 45° polyphase filter with amplitude matching
US6388543B1 · kind B1 · utility
9Cited by
10References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2000 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Sep 18, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/21
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system for an eight-phase 45° polyphase filter with amplitude matching, where a full eight-phase 45° split may be achieved by tying together the inputs of two offset four-phase 90° phase splitters. Amplitude matching may be achieved by obtaining those inputs from an additional single four-phase 90° phase splitter. The additional phase splitter can distribute power evenly among the inputs of the two offset phase splitters so as to cancel out the occurrence of any uneven power distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.