Poly-phase network with resonant circuit bandpass shaping
US6836180B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 23, 2003 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Jun 23, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03B27/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An R-C polyphase network that provides bandpass shaping and amplification to maintain the quadrature phase output is provided. In one implementation, a polyphase device comprises two transistors each having a collector, a base and an emitter. Positive and negative components of an input signal are coupled to a respective base of the transistors, the transistors adapted to drive the R-C polyphase network. Inputs of the R-C polyphase network are coupled to the collectors of the transistors. The R-C polyphase network includes an inductor and has first output and a second output offset in phase. The inductor is adapted to provide bandpass filtering of the first output and the second output to reduce harmonics and spurious content in the output, as well as provide amplification of the outputs relative to the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.