I need help understanding this part of a circuit.
In the diagram I uploaded, you'll see an AM demodulator. After the diode is a resistor and a capacitor as a shunt for getting rid of the carrier, the cap will discharge through the resistor and the resistor affects the time value of the cap. I know that much.
I also calculated the impedance of the capacitor between 3 - 30MHz: 5.3Ω - 0.53Ω respectively. I also understand that the resistance of the resistor will decrease as the frequency increases.
What I don't understand:
1. Do you calculate the time value of the cap & resistor combination as if they're in series?
2. How would I calculate those values to a particular frequency range?
3. Could someone give me a detailed explanation of what's happening?
4. Suggested references: books or web to explain this.
Thank you for any help or comments (such as if I'm completely off on what's going on)
In the diagram I uploaded, you'll see an AM demodulator. After the diode is a resistor and a capacitor as a shunt for getting rid of the carrier, the cap will discharge through the resistor and the resistor affects the time value of the cap. I know that much.
I also calculated the impedance of the capacitor between 3 - 30MHz: 5.3Ω - 0.53Ω respectively. I also understand that the resistance of the resistor will decrease as the frequency increases.
What I don't understand:
1. Do you calculate the time value of the cap & resistor combination as if they're in series?
2. How would I calculate those values to a particular frequency range?
3. Could someone give me a detailed explanation of what's happening?
4. Suggested references: books or web to explain this.
Thank you for any help or comments (such as if I'm completely off on what's going on)
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