AM Receiver and Envelope Detector

Hi all! I've made an AM receiver and AM envelope detector (simulation) on LTspice. The main aim of the circuit is to first receive the AM wave and then retrieve the message signal from it. I have generated an AM wave of type Double Sideband Supressed Carrier (DSB-SC), i.e. the product of the carrier and the message signal. Then the DSB-SC signal is passed into the circuit. In real life, the signal is received through an antenna. The first step is tuning of AM wave which is being done by the inductor and the capacitor. It provides selectivity, i.e. allows a wave of required frequency only. Then diode is used to detect and rectify the signal, known as RF rectification. Then the C3 capacitor filters the F component, kinda low pass filter. C2 keeps the base bias as it should be, it's a blocking capacitor. It should let the AM signal through but not the DC component, otherwise the base of the transistor would get shorted. The transistor configuration being used is feedback biasing. Feedback biasing provides a much stable bias point. The resistor R3 limits the current through the transistor and keeps the signal being effectively shorted to ground. This capacitor C5 keeps the collector from being improperly shorted out. I have implemented 2 more similar configured amplifier stages for better envelope detection. I've added a buffer voltage follower using op-amp so that the diode is not directly connected to the CE amplifier. Doing so would have given a non-linear apmilfication. Lastly, the diode, the capacitor and the resistor is the circuit for envelope detection.