By-passing adjacent channel interference removal in receivers
US6999742B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 2002 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Oct 27, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/109
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A heterodyne receiver includes a tuner to select a frequency of a received signal and a converter to change the frequency of the received signal to an intermediate frequency. A single-pole/double throw switch has an input coupled to an output of the converter, a first output connected to a first band-pass filter and a second output connected to an amplifier. A second band-pass filter is coupled to an output of the amplifier, and a demodulator is coupled to an output of the second band-pass filter to produce an output signal and a characteristics signal. A logic circuit is coupled to receive the characteristics signal and for by-passing the first band-pass filter if the characteristics signal is less than a predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.