Legacy converter filter with extended frequency range
US9445160B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 12, 2015 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Jun 12, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6118
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a converter filter that includes a bandstop frequency range to protect against overloading of the input circuits of legacy converter boxes from the relatively high power upstream return path signal between 5 and 85 MHz. The converter filter also functions to pass the downstream signal path with minimal loss and reflection. The converter filter comprises a circuit including a low pass filter and high pass filter in parallel with each other that operate to substantially pass signals in a first frequency band of approximately 5 to 52 MHz and a second frequency band of approximately 85 MHz to 2 GHz while substantially blocking signals in a third frequency band of approximately 52 MHz to 85 MHz.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.