Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

rf mixer for 74hct4046 pll question

Status
Not open for further replies.

ckt-boarder

New Member
I am interested in building a simple fm reciever using a 74hct4046 pll as a demodulator. The reciever must have a range between 902 and 905 MHz. I guess my question is do I need to mix the input signal down before demodulation? If so, what would be a good frequency to mix down to?
It's also my understanding that this pll can be an fm demodulator and a mixer, but not both, is this correct?
Any thoughts on mixing circuits would be great too.

thanks.
 
You need to study superheterodyne receivers. To get from 900Mhz to a frequency that a 4046 can demodulate (<1Mhz), you will need at least two and maybe three intermediate frequencies and mixers.
 
Status
Not open for further replies.

Latest threads

New Articles From Microcontroller Tips

Back
Top