hello
i am trying to simulate an SWR analyser circuit.
it is two peak detectors with amplifiers
the bottom meter shows the forward voltage the top right meter shows reverse voltage
using the formula, forward + reverse / forward - reverse = ?
i get this, 4.9 + 2.8 / 4.9 - 2.9 = 3.6
the load is 150 ohms, with a 50 ohm reference this should give a 3:1 ratio. instead i get 3.6:1
any ideas why?
i dont know, i think it may be because i am only using a resistance instead of using capacitors/inductors. the load is supposed to be an antenna. i thought that if it had a 150 ohm it wouldnt matter much as it is an impedance.
any help would be great!
thanks
simon
i am trying to simulate an SWR analyser circuit.
it is two peak detectors with amplifiers
the bottom meter shows the forward voltage the top right meter shows reverse voltage
using the formula, forward + reverse / forward - reverse = ?
i get this, 4.9 + 2.8 / 4.9 - 2.9 = 3.6
the load is 150 ohms, with a 50 ohm reference this should give a 3:1 ratio. instead i get 3.6:1
any ideas why?
i dont know, i think it may be because i am only using a resistance instead of using capacitors/inductors. the load is supposed to be an antenna. i thought that if it had a 150 ohm it wouldnt matter much as it is an impedance.
any help would be great!
thanks
simon