neazoi
Advanced Member level 6
Hi I have an mv209 varicap used in tuning a receiver to frequency. The available voltage on the receiver is 0-12v.
I am looking for any tips and tricks for increasing the range of the receiver (varicap tuning) without switching. This means reducing the minimum varicap capacitance, whereas at the same time keeping the max capacitange the same or even greater.
This is quite tricky and from a first look it cannot be done. What I am trying to do is to alter the capacitance/voltage curve without switching.
Maybe a relevant video can be seen here https://www.youtube.com/watch?v=kcdlJvPlJ3o but I do not have a coil, I have a ceramic resonator and a varicap shunted to ground to alter it's frequency.
I am looking for any tips and tricks for increasing the range of the receiver (varicap tuning) without switching. This means reducing the minimum varicap capacitance, whereas at the same time keeping the max capacitange the same or even greater.
This is quite tricky and from a first look it cannot be done. What I am trying to do is to alter the capacitance/voltage curve without switching.
Maybe a relevant video can be seen here https://www.youtube.com/watch?v=kcdlJvPlJ3o but I do not have a coil, I have a ceramic resonator and a varicap shunted to ground to alter it's frequency.