Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic 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.

Register Log in

Questions Regarding Circulators

Status
Not open for further replies.

sdmuashr

Junior Member level 1
Joined
May 11, 2010
Messages
18
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,448
Hi,

I have some questions regarding circulators.

1. What is the formula of directivity in terms of s-parameters for circulator?
2. What are the important factors like insertion loss etc. related to circulators and what are their formulas?
3. If the performance of circulators has to be checked using Network Analyzers which factors need to be measured/considered? And again their mathematical representation in terms of s-parameters?
4. Can anyone share a comprehensive article on circulators?

Thanks
 

G4BCH

Full Member level 5
Joined
May 10, 2006
Messages
296
Helped
108
Reputation
216
Reaction score
80
Trophy points
1,308
Activity points
3,773
Google can be your friend here.
Search for circulator design, directivity, measurements etc
 

biff44

Advanced Member level 5
Joined
Dec 24, 2004
Messages
4,845
Helped
1,354
Reputation
2,704
Reaction score
1,032
Trophy points
1,393
Location
New England, USA
Activity points
36,568
Circulator has 3 ports. So the directivity you will see in a system is easily seen by measuring 3 port S parameters, AND the load impedances at the 2 other ports, and using a linear simulator to tell you the apparent "directivity".
 

Fer.Eng

Newbie level 5
Joined
May 8, 2013
Messages
8
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,283
Location
California
Activity points
1,335
Answer to questions:

1. Google would be your friend.
2. Insertion Loss is base on what connectors if it's a coaxial unit, what type of garnets or ferrite in your design. Frequency and bandwith is also an important factor to consider.
3. S11 is the input, S22 is the output, S12 is insertion loss, and S21 is Isolation.
4. Check out M2 Global website under the Resources tab. It has a lot of tech articles there that will answers your questions.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top