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Cavity Resonator

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Cavity Resonator
References

* De Broglie, L. V. Elektromagnitnye volny v volnovodakh i polykh rezonatorakh. Moscow, 1948. (Translated from French.)

* Vainshtein, L. A. Elektromagnitnye volny. Moscow, 1957………….(1)

* http://www.daenotes.com/electronics/microwave-radar/cavity-resonator#axzz28frY00SL…..……(2)

* http://www.dbdcom.co.uk/catalogue/filters/addinfo_cavity_resonators....(3)

Cavity resonators

What is the Cavity Resonator:
(1) A space totally enclosed by a metallic conductor and excited in such a way that it becomes a source of electromagnetic oscillations. Also known as cavity; microwave cavity; microwave resonance cavity; resonant cavity; resonant chamber; resonant element; rhumbatron; tuned cavity; waveguide resonator. an oscillatory system that operates at superhigh frequencies; it is the analog of an oscillatory circuit.

The cavity resonator has the form of a volume filled with a dielectric—air, in most cases. The volume is bounded by a conducting surface or by a space having differing electrical or magnetic properties. Hollow cavity resonators—cavities enclosed by metal walls—are most widely used. Generally speaking, the boundary surface of a cavity resonator can have an arbitrary shape. In practice, however, only a few very simple shapes are used because such shapes simplify the configuration of the electromagnetic field and the design and manufacture of resonators. These shapes include right circular cylinders, rectangular parallelepipeds, toroids, and spheres. It is convenient to regard some types of cavity resonators as sections of hollow or dielectric wave guides limited by two parallel planes.

The solution of the problem of the natural (or normal) modes of oscillation of the electromagnetic field in a cavity resonator reduces to the solution of Maxwell’s equations with appropriate boundary conditions. The process of storing electromagnetic energy in a cavity resonator can be clarified by the following example: if a plane wave



References: * De Broglie, L. V. Elektromagnitnye volny v volnovodakh i polykh rezonatorakh. Moscow, 1948. (Translated from French.) * Vainshtein, L

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