Resonators and Waveguides

Resonators and Waveguides:

Cavity Resonators : A cavity resonators is a piece of waveguide closed off at both ends with metallic planes. Where propagation in the longitudinal direction took place in the waveguide, standing waves …


Circular Waveguide : It should be noted from the outset that in general terms the behavior of waves in circular waveguide is the same as in rectangular guides. Analysis of behavior: The laws governing …


Directional Coupler Waveguide : We already know that a transmission-line Directional Coupler Waveguide. Its applications were indicated at the time as being unidirectional power flow measurement, SWR measurement and unidirectional wave radiation. …


Impedance Matching and Tuning in Waveguide : We know that suitably chosen series or parallel pieces of transmission line had properties which made them useful for providing resistive or reactive impedances. It …


Methods of Exciting Waveguides : In order to launch a particular mode in a Methods of Exciting Waveguides, some arrangement or combination of one of more antennas is generally used. However, it …


Parallel Plane Waveguide : Parallel Plane Waveguide – As we know already in connection with transmission lines, that reflections and standing waves are produced if a line is terminated in a short …


Rectangular Waveguide Derivation : When the top and bottom walls are added to our parallel-plane waveguide, the result is the standard Rectangular Waveguide Derivation used in practice. The two new walls do …


Rectangular Waveguides : Rectangular Waveguides – As we know already that the term skin effect indicated that the majority of the current flow (at very high frequencies) will occur mostly along the …


Reflection of Electromagnetic Waves by a Conducting Surface : In view of the way in which signals propagate in waveguides, it is now necessary to consider what happens to Reflection of Electromagnetic …


Waveguide Coupling : When waveguide pieces or components are joined together, the Waveguide Coupling is generally by means of some sort of flange. The function of such a flange is to ensure …


Waveguide Isolator and Circulators : It often happens at microwave frequencies that coupling must be strictly a one-way affair. This applies for most microwave generators, whose output amplitude and frequency could be …


Waveguide Junctions : When it is required to combine two or more signals (or split a signal into two or more parts) in a waveguide system, some form of multiple junction must …


Waveguide Mixers and Detectors : As we know that ordinary transistor and tube RF amplifiers eventually fail at microwave frequencies, because of greatly increased noise, compared with their low-frequency performance. Unless a …


Waveguide Switch Design : It is often necessary to prevent microwave power from following a particular path, or to force it to follow another path; as at lower frequencies, the component used …