The terms "leading" and "lagging" are the most confusing terms I've ever come across in AC. A waveform on a scope, to the right of another one looks as if its leading it. But it is later in time -
And, once again I managed to find a keyboard shortcut by mistake that sent the message too soon............ I always think only in terms of sin and cos. Real = = Inphase = COS Imag = Quadrature = SI
Am 13.12.2015 um 13:59 schrieb Andy Talbot: The terms "leading" and "lagging" are the most confusing terms I've ever come across in AC. A waveform on a scope, to the right of another one looks as if
If the signal is on the high side of the oscillator, Q should lead I after the mixer, s(t) = sin(wc * t); // Signal, wc = 2 * pi * Fc i(t) = sin(wc * t) * cos( wo * t); // LO, wo = 2 * pi * Fo q(t) =
Looked at like that it makes good sense. On a vector scope plot, with I along the positive X axis and Y vertically upwards, a positive frequency rotates anti-clockwise, from I to Q, ie from right h
Hi Wolf, Am 13.12.2015 14:34, schrieb Wolfgang Büscher: Yes... bare with me, old habits die hard .. but the 'vor- oder nacheilende Phase' (as we called it in german at school) came back to mind. Der
Ok Paul, looks like we need a little adjustment then. I will add the option to save wave-files in SL in the EbNaut / VLF-RX tools compatible mode (details further below). DCF77 recorded with the LO (
RR. Sounds familiar .. Our professor (in 'Grundlagen der Elektrotechnik') tortured us with the stuff because (in 'Mathematik 1') complex numbers were introduced too late. Having started with complex
I'm puzzled by the I/Q inconsistency. Is there no convention on the signs in the complex mixer? Perhaps it is vlfrx-tools and ebnaut which needs to change Q sign? I'd like to thank everyone for givin
Hi Paul, Am 13.12.2015 um 22:01 schrieb Paul Nicholson: I'm puzzled by the I/Q inconsistency. Is there no convention on the signs in the complex mixer? Perhaps it is vlfrx-tools and ebnaut which need
