Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

problem with the design of a butler matrix 4x4

Status
Not open for further replies.

hydra57

Newbie level 1
Joined
Jul 7, 2016
Messages
1
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
10
hello!

i'm trying to design a nutler matrix at 10GHz using this architecture **broken link removed**

i've designed the 3dB coupler and the crossover, here are the results of the simulations:
for the coupler: (port 4 is the isolated port)
**broken link removed**
for the crossover:
crossover.PNG

my problem is when i gather the components i get weird results and i don't understand why. here is the layout:
layout.png
normally i'm supposed to have -3dB at port 2 and 3 and a good isolation on the ports 5 and 4, instead i get this :
butler.PNG

thank you in andvance.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top