I'm studying transmission lines and matching networks, in particular series and shunt stubs.
I have some difficulties with their real implementation, in particular series stubs, in coaxial cable and microstrip.
How are realized series stubs in those technologies?

 

I know it is a silly question but could anyone give me the answer?

 

A little bit here -

https://en.wikipedia.org/wiki/Stub_(electronics)


Regards, Dana.

 

Hello,

There is even an article on stubs on this website:
https://www.allaboutcircuits.com/technical-articles/learn-stub-tuning-with-a-smith-chart/

Bertus

 

A little bit here -

https://en.wikipedia.org/wiki/Stub_(electronics)


Regards, Dana.

Hello,

There is even an article on stubs on this website:
https://www.allaboutcircuits.com/technical-articles/learn-stub-tuning-with-a-smith-chart/

Bertus

Thanks for your answer but it's not what I'm searching for. I perfectly know stubs and transmission lines but I can't realize how series stubs are realized in coaxial technology and in microstrip technology.

 

I'll refresh my question: are series stubs physically realizable?

 

I'll refresh my question: are series stubs physically realizable?

Yes they are.

 

Yes they are.

Could you explain an example of physical realization of them, please? For example in coaxial technology or microstrip technology?

 

Could you explain an example of physical realization of them, please? For example in coaxial technology or microstrip technology?

Simplest example is to break the shield and run two parallel conductors, a fixed distance apart, at right angles to the center conductor. This would be a series stub with an open termination. Is it useful? Depends on the impedance at the frequency of interest.