wilkinson power divider design

[memox]

i need to design wilkinson power divider. Operation frequency can be between 2-8 ghz.

i need to Ads systematic or pcb file.

 

[DDavid]

Hi,

First of all you have wide BW so you must design the splitter from 3 or 4 stages for good performance.

How to do it? When I did it I start it [in ADS] schematics mode and only after I get good results pass to layuot and make Mometum simulation.

If you need some data material or something else talk to me!!!

Regards
David

 

[VSWR]

This has been requested many times before. I found this topic using the EDAboard search for wilkinson:

 

[DDavid]

Hi,

I also using Eagleware simulation and this simulator have signal control syntesis
him [simulator] could calculate exactly value of the transmision line and resistor value.
If you need that I calculate just give me you details about splitter I mean
and I will send it to you

David

 

[luckyali]

hi david,
for my university project, i want to design a 2 way wilkinson power splitter. suggestions are that most of its work is in ADS but i m a beginner for ADS,
=> I need the splitter for the LO freq = 20 Ghz.

=> can u suggest some kind of tutorial for the design and layout etc. (i mean from step 0 to step end)

one thing also, i searched on the web and found 2 differet version of wilkinson power divider. 1. lumped elements and 2. distributed. so what makes difference b/w these two designs and which one would be much better lumped or distributed for such high frequency.

last thing, i m worried about the schematics. i dont know how to design all these things in ADS..
Please help me out

 

[tony_lth]

for 20G, you should use microstrip to make the wikinson power splitter. It is a hard work, and be careful about the mechanical design.

 

[luckyali]

hey toni,
u mean to say not to apply lumped elements but the distributed component and hence we have to consider T/L length width etc.
my question is what is the reason for selecting microstrip for such a hight frequency, any pros or cons.

Regards

 

[tony_lth]

Because 20G wave length is only 15mm.

 

[DDavid]

Hi

The reason that at u freq u must use microstrip (Planar) and not with lumped devices is that impossible to work with lumped devices
for example inductor have one of the parameters that called SRF, if u working above this freq inductor will behave like capacitor...


David

 

[volker_muehlhaus]

my question is what is the reason for selecting microstrip for such a hight frequency

Why purchase and place discrete components if the circuit function can be implemented with simple layout = no cost?

 

[luckyali]

implementation with simple layout???
how could that be possible.. i am really sorry i did'nt got ur point. can u explain how..

 

[volker_muehlhaus]

i am really sorry i did'nt got ur point.

Let me try again: If you can realize the circuit function with a few transmission lines, why would you use expensive SMD components instead?

 

[luckyali]

Hi,

I also using Eagleware simulation and this simulator have signal control syntesis
him [simulator] could calculate exactly value of the transmision line and resistor value.
If you need that I calculate just give me you details about splitter I mean
and I will send it to you

David

in Eagle i am not able to find any operation to simulate a schematics. isn't it just like paint OR Ms-Visio. can u explain how to claculate transmission lines and resistor values via EAGLE. where can i figure out this calculator and what things do we need for these type of calculations...

however I have also started working in ADS but since i am new to this tool, it will take long to understand many things.
can any one provide me a general schematic picture for a 2 way power divider (just want to take an idea which components should be used and where to place them exactly), i will calculate the parameters by my self for line width and length etc..

Regards

 

[volker_muehlhaus]

Cadsoft Eagle and Eagleware Genesys (now Agilent) are different programs.

2 way power divider (Wilkinson type):
**broken link removed**