Dual diplexer combining device and television broadcast transmission system using same
US6188446A · kind A · utility
4Cited by
4References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1998 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Apr 23, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/426
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are provided for allowing two different television signals to be combined and sent to a common propagation device, such as a tower antenna. The apparatus utilizes a number of appropriately loaded hybrids, hybrid waveguide junctions, or other appropriate equivalent devices to combine the signals in such manner that there is a minimum of intersignal interference or distortion. The apparatus utilizes bandpass/reject filters and notch filters in conjunction with the hybrids to achieve the desired results. A television broadcast system using the hybrid combining apparatus is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.