Creating multiple circuit using same nport RF object in MATLAB with different node assignment?

Question

Aakriti Srivastava 2022-7-14

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1760405-creating-multiple-circuit-using-same-nport-rf-object-in-matlab-with-different-node-assignment

回答： Namnendra 2023-4-27

I am trying to create multiple circuit using same RF objects having with different topology but getting an error shown below.

%% code for different topology

ckt = circuit('h1');

for i = 1:total_elements

add(ckt,[nport_node1(i) nport_node2(i)],nport_obj{i});

end

ckt1 = circuit('h2');

for i = 1:total_elements

add(ckt1,[nport_node2(i) nport_node1(i)],nport_obj{i});

end

%The error that I get

Error using rf.internal.circuit.Circuit/add

Cannot add nport 'Sparams' to circuit 'h2': nport 'Sparams' already belongs to a circuit.

Would you please let me know how can I create different topology using same circuit objects?

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Answer 1

Namnendra 2023-4-27

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1760405-creating-multiple-circuit-using-same-nport-rf-object-in-matlab-with-different-node-assignment#answer_1224359

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The error message suggests that you are trying to add the same `nport_obj` (which is an `S-parameters` object) to multiple circuits.

To create different circuits with different topologies, you should create separate `S-parameters` objects for each circuit. You can create the `S-parameters` objects outside the `for` loop and then use them in both circuits. Here's an example:

% create S-parameters object for circuit 1
sparams1 = rfdata.network;
sparams1.S = ... % define your S-parameters here
    
% create circuit 1
ckt1 = circuit('h1');
for i = 1:total_elements
    add(ckt1, [nport_node1(i) nport_node2(i)], sparams1); 
end 
% create S-parameters object for circuit 2
sparams2 = rfdata.network;
sparams2.S = ... % define your S-parameters here
    
% create circuit 2
ckt2 = circuit('h2');
for i = 1:total_elements
    add(ckt2, [nport_node2(i) nport_node1(i)], sparams2); 
end 