Design & Construct FM Radio Receiver 87.5-108MHz

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    Fm Radio Receiver
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Discussion Overview

The discussion revolves around the design and construction of an FM radio receiver capable of tuning into commercial FM radio broadcast channels from 87.5 MHz to 108 MHz. Participants are exploring circuit design, component selection, and guidance on how to approach the assignment.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant requests a simple circuit design and component values for an FM radio receiver.
  • Another participant emphasizes the importance of understanding the design process and suggests breaking the circuit into smaller subcircuits.
  • A participant expresses a lack of knowledge on where to start and seeks guidance, referencing an external link for assistance.
  • Another participant reiterates that the forum does not provide direct solutions but offers guidance, questioning if the solutions are found in textbooks or course materials.
  • One participant suggests using the "divide and conquer" approach to tackle the design, recommending the use of block diagrams and familiar concepts like filters and amplifiers.
  • There is mention of using integrated circuits like the TDA7088, but uncertainty exists regarding the requirement to use discrete components only.
  • A participant expresses confusion about the complexity of the provided resources and questions the appropriateness of using the TDA7088.
  • Another participant indicates they are facing the same problem and is looking for a solution.

Areas of Agreement / Disagreement

Participants generally agree on the need for guidance in designing the FM receiver, but there is no consensus on the specific approach or components to use. Multiple competing views on how to tackle the assignment remain unresolved.

Contextual Notes

Participants express varying levels of familiarity with circuit design, and there are references to external resources that may not align with the assignment's requirements. The discussion reflects uncertainty about the use of specific components and the complexity of the task.

Who May Find This Useful

Students or individuals interested in electronics, particularly those tasked with designing simple radio receivers or seeking guidance on circuit construction.

misz_univerze
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The objective is to "design and construct an FM radio receiver" that is able to tune to commercial FM radio broadcast channels spanning from "87.5 MHz to 108 MHz", and to produce audible demodulated output.
can anybody help me with a simple circuit for this assignment with proper values for the caps n other components...
n wat is the formula i can use to calculate the proper values for this components for the frequency specified above...
 
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Well, if we give you everything, you won't be designing and constructing an FM radio receiver, with emphasis on design, right?
The way your question is structured, it sounds like you have no idea what goes into building such a circuit. Is this true? Can you at least break this circuit into smaller subcircuits?
 
ok... ur very right... i seriously have no idea where to start n where to head... I am in need of serious guidance... i found something from this link I've attached below... but I am not sure how to relate it wit the question i have been given... please help me through this task... http://www.somerset.net/arm/fm_only_one_transistor_radio.html
 
Welcome to PF, Misz.
As Ranger indicated, solutions to problems of an academic nature are not provided here. You will get guidance only. It isn't PF's mandate to solve people's problems, but to help them solve them on their own initiative. The exception to that is when someone with a real-life problem needs assistance to dispell it; then we brainstorm it.
Since this is a sore point with me, I will ask if the solutions are in your textbooks or course material?
This might be due to me being a baby-boomer, but it seems to me that lately a lot of test questions are beyond the scope of what has been taught. I never saw an exam question (or even pop quiz) that dealt with anything that we hadn't already covered in class.
 
misz_univerze said:
ok... ur very right... i seriously have no idea where to start n where to head... I am in need of serious guidance... i found something from this link I've attached below... but I am not sure how to relate it wit the question i have been given... please help me through this task... http://www.somerset.net/arm/fm_only_one_transistor_radio.html

Well an FM receiver is circuit that consists of many of many other major subcircuits. I suggest that you practice the "divide and conquer" rule. Take your FM receiver, break it up into its major parts. The block diagram from wiki should get you started. Surely you've covered the concepts and applications of filters, amplifiers, etc?

Is it a requirement for you to use discrete components only? Using an IC such as the TDA7088 may help you out.

Also, try google images and see if you can find some schematics on FM receivers. You can observe techniques employed from RF filter to the audio output.

http://en.wikipedia.org/wiki/Radio_receiver_design
http://home.hetnet.nl/~a.van.waarde/id21.htm
http://stuff.nekhbet.ro/2006/06/25/how-to-build-a-very-simple-fmam-receiver-using-tda7088.html
http://www.circuits.8m.com/Fm-radio.htm
 
Last edited by a moderator:
ok... the things u gave me... look pretty complicating.. we were to told to build a simply circuit... dats it... so I am not sure if i can use a TDA7088...
 
hi,
i am having same problem and looking for a solution
thanks
 

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