#### suudlor

##### Newbie level 3

I really need help for my senior project, I'm very clueless.

I'm trying to design a coupled line BPF 0.5 equal-ripple when the order(N)=3, center frequency=2GHz, bandwidth=10%, Zo=50(ohm)

and attenuation at 5 GHz - many of you will find this problem familiar since it's from Pozar's microwave engineering textbook.

here're some calculations.

for N=1; Zoe=70.61 Zoo=39.24

for N=2; Zoe=56.64 Zoo=44.77

for N=3; Zoe=56.64 Zoo=44.77

for N=4; Zoe=70.61 Zoo=39.24

Here's the problem...

I have to use FR-4 substrate with dielectric thickness=1.6mm, dielectric constant=4.5 and conductor thickness=35(micron)

I have to apply all these figures in ADS, I've already used LineCalc functions as I read in some threads here but I'm stuck!

basically, what do I do? which number do I put in which box? and what should be the next required step for me to achieve the final design?

Thank you guys a lot in advance and I'm looking forward to an early reply, since my project depends on this step and I will not be graduated if this is not completed.