Complex bandpass filter having a transfer function with two poles
US9484871B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2015 |
| Grant date | Nov 1, 2016 |
| Priority date | — |
| Expiry date | May 12, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2011/0494
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In some implementations, a filter circuit includes a first signal path that includes a first amplifier and a second signal path that includes a second amplifier. The first signal path is configured to receive a first component of a complex signal and provide a filtered version of the first component of the complex signal. The second signal path is configured to receive a second component of the complex signal and provide a filtered version of the second component of the complex signal. The first signal path before the first amplifier is coupled to the second signal path before the second amplifier. The first signal path after the first amplifier is coupled to the second signal path before the second amplifier. The second signal path after the second amplifier is coupled to the first signal path before the first amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.