State the advantages of circular waveguide and list its applications.

State the advantages of circular waveguide and list its applications. 
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1 Answer

Answer :

Advantages: 

 The circular waveguide are easier to manufacture than rectangular waveguides and are easier to join.

 The TM01 modes are rotationally symmetrical and hence rotation of polarization can be overcome.

 TE0,1 mode in circular for long distance waveguide transmission as it has the lowest attenuation per unit length.

 Lower attenuation for a given cutoff wavelength

 Greater power – handling capacity

Applications of Circular waveguide: 

 It is used where the transmission or reception is in the range of microwave frequencies.

 It is also used for handling the high power of energy.

 It is mostly used in the airborne radar.

 The circular waveguide is mostly used in the ground radar to transmit or receive the energy from antenna. This revolves in 360 degree bearing continuously.

 The waveguide is also used in communication system.

 It can also use in the devices of navigation aids.

 The circular waveguides are also used with the cavity resonators to carry the input and output signals.
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