Warning: Creating default object from empty value in /homepages/11/d132647312/htdocs/Amfone/mkportal/include/SMF/smf_out.php on line 47
Design of Impedance matching networks (howto) for transmitters.

The AM Forum
May 28, 2020, 08:07:46 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
   Home   Help Calendar Links Staff List Gallery Login Register  
Pages: [1]   Go Down
Author Topic: Design of Impedance matching networks (howto) for transmitters.  (Read 3085 times)
0 Members and 1 Guest are viewing this topic.

Offline Offline

Posts: 128

« on: October 03, 2011, 07:57:02 AM »

This is an useful tool from Berkeley:


Only for CLC PI networks, if you wrote zero in the output tube (source) reactance field (because you don't know what it is), subtract the output tube anode capacitance from the input capacitance of the network you just computed in order to find the capacitance of the capacitor you should use there..
The frequency must be entered in Hz:  for 3.8 MHz write 3800000

If you want to know how much of the Smith chart you can cover with your matching network at a given frequency just use this DOS software:
Use Montecarlo simulation and define the nominal value and tolerance of the capacitors in order to obtain the maximum and minimum value of capacitance of your components. The inductor should have 0% tolerance.
For instance 100 pF nominal and 80% tolerance will produce capacitances between 20 pF and 180 pF.


Best Regards.

Pages: [1]   Go Up
Jump to:  

AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
 AMfone 2001-2015
Powered by SMF 1.1.21 | SMF © 2015, Simple Machines
Page created in 0.03 seconds with 18 queries.