Systems and methods providing wideband tuners controlling spurious signal placement in the capture bandwidth
US8346172B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2009 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Nov 2, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/28
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Systems and methods which place a spurious signal within a capture bandwidth of a tuner. Placement of the spur is preferably controlled to dispose the spur within a spur placement window, such as may be defined between traffic channels of an input signal. A tuner system operating in accordance with embodiments may be controlled to select a particular input frequency band comprising a plurality of traffic channels for frequency conversion and to determine local oscillator frequencies which result in most relevant spurs being placed outside of the tuner capture bandwidth. The local oscillator frequencies may be shifted to place a relevant spur remaining within the capture bandwidth of the tuner between traffic channels of the plurality of traffic channels. Embodiments operate to determine frequency offset between a transmitter and a tuner to determine the midpoint between channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.