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.

Register Log in

design and simulation of circulator and isolator

Status
Not open for further replies.
T

tshah

Member level 5
Joined
Dec 31, 2007
Messages
80
Helped
7
Reputation
14
Reaction score
2
Trophy points
1,288
Location
USA
Activity points
1,827
do anybody has tutorial for designing and simulating a circulator and isolator?

I also, want to know what is the exact different between circulator and isolator?

it is kind of confusing. can somebody explain me with examples?

also, what is drop-in circulators/ isolators?

Thanks
 

David Pozar has done just what you asked. Look in his book "Microwave Engineering".
 

For a simple answer.

A two port circulator is isolator. If you terminate the third port of a circulator with a good load and use it for reverse isolation it is isolator.

usually circulators comes with N or sma connectors , to be connected with cables. A drop in circulator can be directly soldered to PCB/PWB.no connectors.


Regards
GV
 

hi gvvin,

do N / SMA connector circulator has different design than drop in circulator? Also, did you mean that a circulator can work as an isolator in reverse direction? That means that if I apply power at port 2, the power coming out at port 1 will be less than 20 or 40 dB. That's what I understood. Please clarify my doubt.

Thanks
 

Hi,

No , Only the size will be smaller and leads will be there to directly mount to PCB.Design will be same using magnets and ferrite material .

A Circulator is a 3-port ferrite device used to route microwave signals from one port to another, Port 1-> Port 2, Port 2 -> Port 3, Port 3 -> Port 1.

An Isolator is basically a circulator with port 3 terminated. It becomes a 2 port device which transmits a signal in port 1 and out port 2. Any reflected energy or any signal entering port 2 will be routed to port 3 where it is absorbed. Thus port 1 is "isolated" from port 2.

Hope this clarifies.
You can search for circulators and isolators from websites.
**broken link removed**

Regards
GV
 

    T

    tshah

    Points: 2
    Helpful Answer Positive Rating
Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top