Types of waveguides

Waveguide is a kind of transmission device which mainly uses air as medium , The dielectric loss of air is almost negligible , Therefore, the loss of waveguide mainly comes from the loss of conductor itself , Common waveguides are rectangular waveguides 、 Circular waveguide 、 Elliptical waveguide and ridge waveguide, etc , The uniform characteristic of these waveguides is that they belong to regular metal waveguides , Waveguides are mostly used in high frequency bands , such as 10G The band above , Especially in the millimeter wave band , This is mainly because its size is directly proportional to the wavelength of the work , The smaller the wavelength is , The smaller the volume of the waveguide , However, the loss of waveguide is relative to that of microstrip line , The insertion loss is very small , So in some high-power occasions , In addition to the use in the high frequency band , It can also be applied to the frequency of 100 MHz in some products that are not limited by volume , Since the volume of the waveguide depends on the wavelength , Once the design is complete , Is finalized , therefore , In the actual use choice , Standard waveguide products can be selected according to operating frequency and application . For reference only ！