effective dielectric constant of slotline

[nassim1]

Hi,

Is there someone knows the formula of an effective dielectric constant of slotline?

Thank you in advance,

Nass

 

[Manjunatha_hv]

Hello,

Yes the following article has the equations for effective dielectric constant calculation for Slotline...
"Closed-form Dispersion Models for Propagation Characteristics of Slot-line in Lossy Media with Conductor Thickness"

---manju---

 

[nassim1]

Hello Manjunatha_hv,

Yeah, i found them from Gupta book. Many thanks for the paper title that you provided me, it's good.

Please, could you help me in the following step:

I wanted to compare n (transformer turn ration) with three methods given in literature which are as follows:
1. Using paper of Knorr 'Slotline transistors' : IEEE MTT 1974
2. Using paper of Das 'Generalized multi-port reciprocity analysis of surface to surface transition between ...' IEEE MTT1993
3. Using paper of Antar 'Microstrip-slotline transition analysis using the spectral domain ....' IEEE 1992

With the 1st one, n is easy to calculate it but for the others i found difficult such as for the 2nd method, i didn't find how to determine the J0(.) (zeroth-order bessel function) whereas the 3rd method it is little nit complicated, i.e, the expression of n is not clear...

Please, do have ideas on that or can someone help me?

Thanks you in advance,

Nassim

 

[nassim1]

just to inform you that it's okay for the 2nd method (Das) ...