Timeline for IQ Sampling and Oversampling Differences? *Confused*
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 4, 2020 at 13:04 | comment | added | Cristobol Polychronopolis | en.wikipedia.org/wiki/In-phase_and_quadrature_components | |
| Mar 4, 2020 at 8:25 | comment | added | Natalie Johnson | Still not sure I fully understand what the actual difference is in the two scenarios.... do you have content on IQ sampling to read? | |
| Feb 28, 2020 at 15:17 | comment | added | Cristobol Polychronopolis | Using a really good sample and hold. But in your first sentence you stated you had two 1GHz ADCs. | |
| Feb 28, 2020 at 14:21 | comment | added | Natalie Johnson | taken simultaneously from two ADCs. How can one ADC taken samples on two data inputs | |
| Feb 27, 2020 at 15:02 | comment | added | Cristobol Polychronopolis | No, I/Q sampling means the samples are taken simultaneously, from the outputs of two mixers which are mixing the signal to baseband with reference signals that are 90 degrees out of phase. | |
| Feb 27, 2020 at 14:52 | comment | added | Natalie Johnson | On point two. If they are 90 degrees out of phase for IQ sampling then ADC1 gets a sample at 0, ADC2 gets a sample at 90, ADC 1 gets a sample at 180, ADC 2 gets a sample 270 and ADC1 gets a sample at 360. This is 2 extra points per frequency, doubling Fs/2 to Fs and then this is the same as my first set of bullet points, and technically we have a pseudo Fs that is 2x the Fs value of any single ADC. | |
| Feb 26, 2020 at 13:29 | history | answered | Cristobol Polychronopolis | CC BY-SA 4.0 |