Direct conversion receiver for angle modulated signals
US8958769B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 2012 |
| Grant date | Feb 17, 2015 |
| Priority date | — |
| Expiry date | Aug 31, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/142
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A direct conversion receiver including an input stage, a frequency modulated local oscillator, a mixer stage, an output stage, and a DC blocker stage coupled between the mixer stage and the output stage. The input stage is receptive to a frequency modulated transmission having a carrier frequency fc and the frequency modulated local oscillator provides a frequency modulated local oscillator signal. In an embodiment, the frequency modulated local oscillator includes a local oscillator having an output with a frequency approximately equal to fc, a modulation source having a modulation signal output, and a frequency modulator coupled to the outputs of the local oscillator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.