Difference between Waveguides and Resonators

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Homework Help Overview

The discussion revolves around the relationship between waveguides and resonators, specifically questioning whether waveguides can be classified as resonators based on their ability to produce normal modes of electromagnetic fields.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the definitions of waveguides and resonators, questioning whether resonators must be closed systems and discussing the nature of normal modes in the context of waveguides.

Discussion Status

The discussion is ongoing, with various interpretations being explored. Some participants assert that waveguides do not produce normal modes, while others challenge this by referencing specific modes associated with waveguides. There is a mix of claims and requests for supporting evidence.

Contextual Notes

Participants mention the lack of external references to support claims, relying instead on personal study notes and definitions. The conversation highlights the ambiguity in the definitions of normal modes and the characteristics of resonators.

CGandC
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Homework Statement
Are Waveguides considered to be Resonators?

Also, do resonators have to be closed? or can they have openings?
Relevant Equations
-
I claim that waveguides are resonators because a resonator is defined as a device which can produce you normal modes of some ' mathematical object' you're looking for, which in waveguide's case is Electromagnetic fields ( waveguide can produce normal modes called TE and TM ).

Am I right?
 
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CGandC said:
Problem Statement: Are Waveguides considered to be Resonators?

Also, do resonators have to be closed? or can they have openings?
Relevant Equations: -

Am I right?
how about posting a link to somewhere reliable that supports your claim :smile:
 
davenn said:
how about posting a link to somewhere reliable that supports your claim :smile:

It is from my study notes so there is no link.
 
CGandC said:
Problem Statement: Are Waveguides considered to be Resonators?

Also, do resonators have to be closed? or can they have openings?
Relevant Equations: -

I claim that waveguides are resonators because a resonator is defined as a device which can produce you normal modes of some ' mathematical object' you're looking for, which in waveguide's case is Electromagnetic fields ( waveguide can produce normal modes called TE and TM ).

Am I right?
Waveguides do not produce normal modes, but allow some kinds of EM waves travel through them.
 
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Waveguides are structures that direct electromagnetic energy along a desired path, transmission lines being just one example.
Resonators are usually in the form of shorted segments of shielded transmission lines.
Source from Waveguides and Resonators
 
ehild said:
Waveguides do not produce normal modes, but allow some kinds of EM waves travel through them.

Why waveguides don't produce normal mode?
If waveguides do allow some kinds of EM waves to travel through them, they are identified by discrete numbers therefore they are defined as normal modes.

For example: $$ TE_{10} $$ is a normal mode and $$ TE_{20} $$ is another normal mode.

In other words, what would you define as normal mode?
 

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