Radio frequency (RF) receivers and methods to spread spectral energy of spurious outputs
US10128886B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2016 |
| Grant date | Nov 13, 2018 |
| Priority date | — |
| Expiry date | Sep 26, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B15/06
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Radio frequency (RF) receivers and methods to spread spectral energy of spurious responses of mixers over a frequency band are disclosed. For example, a receiver includes first and second mixers, and first and second variable frequency oscillators (VFOs). The first mixer is configured to receive an RF signal and provide an intermediate frequency (IF) signal. The second mixer is coupled with the first mixer and configured to receive the IF signal and provide a baseband signal. The first VFO is coupled with the first mixer and configured to provide a first angle modulated LO signal. The second VFO is coupled with the second mixer and configured to provide a second angle modulated LO signal. The first and second mixers provide a stable frequency downconversion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.