ESP32 Based SDR Transmitter - Part 2 Tayloe Encoder
In this video I continue the transmitter series and move on to the Tayloe Encoder which mixes the I and Q audio signals together with the LO to produce a sideband signal (either upper or lower)
Previous video:
• ESP32 Based SDR Transmitter - Part 1 Audio...
The code:
https://github.com/thaaraak/SDR-Trans...
Schematic:
https://github.com/thaaraak/ESP32-Tay...
0:00 Intro
0:54 Schematic walkthrough
2:20 I/Q to 0/90/180/270 opamps installed
03:25 0/90/180/270 audio signals tested
04:49 A diversion into some interesting patterns produced with quadrature audio signals
06:50 Tayloe Encoder installed
09:13 Looking at the code to swap upper and lower sideband output
10:15 Testing the output signal on the oscilloscope
13:36 Looking at a single tone SSB signal on the spectrum analyzer
15:31 looking at the effect of adjusting the I/Q balance
17:15 Looking at a two tone SSB signal
18:22 Looking at the out of band harmonics and wrap up