Breadboard to Antenna

Discussion in 'Wireless & RF Design' started by davidGG, Oct 7, 2013.

  1. davidGG

    Thread Starter Member

    Dec 22, 2012
    51
    0
    Hello.
    I have an AM radio transmitter setup on my breadboard. Currently I am using a basic quarter wavelength monopole antenna. It is literally just a stripped jumper wire.
    My question is, what if I wanted to use a more complex antenna that is fed through a coaxial cable. How would I feed that using a bread board? I searched google, but I was unable to find a breadboard to coax 'converter'.

    Can anyone shed some light on this?
    Thank You.


    Also, many antennas have a 50 Ohms resistance, how can I match the antenna impedance? I just place a resistor before the feed line of the antenna?

    and one last thing, how do I connect antennas that need to be screwed in to a breadboard? :)
     
    Last edited: Oct 7, 2013
  2. sirch2

    Senior Member

    Jan 21, 2013
    1,021
    353
    Just solder some jumpers on to the coax and plug them into you breadboard with the outer connected to ground. However I suggest you look at balanced vs unbalanced loads and a balun depending on what type of antenna you want to connect.

    Re 50 Ohm matching, if your circuit is well designed then it should be desisnged for a 70 or 75 ohm load anyway. If not then youu need somehting like an impedeance matching transformer.
     
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