NBFM simulated

On the first view i was thinking its a pure AM spectrum you created but after a second deeper check im not so sure. Can you mathematical prove your syntesis with three spectral components is a pure FM modulated correct spectrum representation, 1MHz carrier modulated with 100kHz, so like wobbleing 900kHz to 1.1MHz up and down, or is it 0.95-1.05MHz? Anyway, for an nice AM spetrum its clear this methode works but for FM the only diffrence i can see in your circuit is the 180° shifted lower side band. Is this the secret between AM and FM syntesis? I think you just and AM carrier modulates created and the result is demodulated clearly a 100kHz signal but not from an FM discriminated at a filter slope if HP first stage and then applied to the demodulator diode, i think the AM is still present in your sytesis of spectrum, can you clarify, please?

ok, i looked it up the math for myself and indeed the secret is in this 180° phaseshift of the lower sideband which makes it FM in the special case and not AM. Thanks for your support at least for the left circuit part to bring it back to my mind, thank you for that!

Its so close to reonanse. http://everycircuit.com/circuit/4924659418791936