I was asked to design a local oscillator. To be used in an AM receiver to demodulate the transmitted radio broadcast at 810KHz. The Local Oscillator should oscillate at 1265KHz. The signal should be sinusoidal with an amplitude of 100mV and have no DC offset. The oscillator should be tunable to allow other radio stations to be recieved. This means it should be able to oscillate at frequences from 1000KHz up to 1500KHz. It should be powered by a voltage DC in the range of 3-10V.
I was given this project last week and have realized that it will involve a Bipolar Junction Transistor which will need to be biased. I am also aware that some sort of feedback should be put in place in order to have the input of the sinusoidal signal. Resistors, Capacitors and Inductors could be involved in this feedback process, some sort of noise should be created.
Does anyone on here have an ideas regarding the feedback process which includes the components mentioned? Any comments will be gratefully received.
I was given this project last week and have realized that it will involve a Bipolar Junction Transistor which will need to be biased. I am also aware that some sort of feedback should be put in place in order to have the input of the sinusoidal signal. Resistors, Capacitors and Inductors could be involved in this feedback process, some sort of noise should be created.
Does anyone on here have an ideas regarding the feedback process which includes the components mentioned? Any comments will be gratefully received.