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improving cellphone signal strength

Discussion in 'General Electronics Discussion' started by roltex_rohit123, Feb 23, 2012.

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  1. roltex_rohit123


    Oct 12, 2009
    hi All!!! I am currently in a very remote area and here cellphone signal sucks!! I am thinking of building a small 5-10 watt amplifier for myself for improving the signal. the signal is good outdoors but indoors it is worst. any helps please? i am new to the communication side. i have a fair idea of amplifier classes, basic electronics and microcontrollers.
  2. jackorocko


    Apr 4, 2010
    you know you can buy cell phone amplifiers? If you look you can probably even pick a used one up and save on initial cost.
  3. roltex_rohit123


    Oct 12, 2009
    yes the cellphone amplifiers are available, but i am enthusiastic to build my own circuits and learning telecommunication electronics, this could also serve as my project for the course. moreover the amplifiers are too costly in the indian currency to be bought. can I modify FM dixing circuits for this purpose?
  4. davenn

    davenn Moderator

    Sep 5, 2009
    hmmmm I had a huge reply posted to you its not here

    ohhh i remember I answered you in that other forum. Did you read it ?
    I suspect you really dont have any idea how complex a project like this would be ??

  5. roltex_rohit123


    Oct 12, 2009
    yes Dave yo are Right I absolutely no idea about it, but this is intersting me. I thought I could just synthesize the frequency and amplify it. But I think this wont be enough. can you guide me the basics? if once I get the basics, I can design the circuit and do some programing also. Please give me a start!!!

    Thank you.
  6. twister


    Feb 12, 2012
    Radio frequency circuits are very complex and difficult to build. If you want to learn, you could buy a ARRL Handbook. The first cell phones were built by amateurs. I can remember when hams had 2 meter radios and repeaters, way before cell phones came out.
    American Radio Relay League
  7. roltex_rohit123


    Oct 12, 2009
    Bidirectional Cellular GSM amplifier (cellphone signal booster)

    I am trying to build a cellular repeater. I searched on the internet about this and found out that poweramplifiers are used in it. I saw some products for the purpose and need guidance to complete this project.
    I need to understand that what is a bidirectional repeater? why is it necessary. is there a necessity for some sort of connection (or isolation) between the incoming an outgoing circuit?

    I have searched for a few components
    MAX2057( both these 56 and 57 products for all band amplification)

    New part search are welcome.

    Kindly guide me how can I go on with this project. is there any software to simulate this project?

    Thank you.
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