Circular Waveguide

Product Description

A circular waveguide is a type of waveguide, which is a cylindrical waveguide with a circular section. The general properties of circular waveguides are similar to those of rectangular waveguides.

Analysis method of circular waveguide

The analysis method of circular waveguide is similar to that of rectangular waveguide. Firstly, the wave equation of Ez (Hz) of the longitudinal field component is solved, the general solution of the longitudinal field is obtained, and its special solution is obtained according to the boundary conditions. Then the expressions of all field components are obtained by using the relation between transverse field and longitudinal field. Finally, the cutoff property, transmission property and field structure are discussed according to the expression. Because the cross section of waveguide is round, it is convenient to use cylindrical coordinate system for analysis.

Propagation characteristics of circular waveguide

When the waveguide radius a is constant, the order of each mode remains unchanged. There are many propagation modes in circular waveguides. The main mode is TE11 mode, and its single-mode working area is 2.6127 A <λ<3.4126 A. Therefore, the general waveguide radius is a=λ/3.

Circular waveguide has two degeneracy modes, one is E-H degeneracy and the other is polarization degeneracy. E-H degeneracy is the degeneracy of E wave and H baud with the same ending wavelength; For the same TM mode and TE mode, there are two field structures when M ≠0, which correspond to sinm φ and Cosm φ and are independent of each other, called polarization degeneracy. Polarization degeneracy is a special phenomenon in circular waveguide, which can be used to make polarization separator and polarization attenuator.

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Features and Applications

Circular waveguide has the characteristics of low loss and double polarization. It is often used in antenna feeders, as well as long-distance transmission lines, and widely used as microwave resonators.

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Company Profile

Xi'an WinFine Telecom Technology Pte.,Ltd (WinFine Telecom hereinafter) is a leading microwave waveguide components, assemblies and antenna systems manufacturer in China. Established in 2011, WinFine Telecom is continually growing to meet customer's needs. Our highly trained design engineers and manufacturing personnel can handle both standard and custom products to meet your needs.

Our in house design, manufacturing, inspection and quality control capabilities allow fast response to customer requirements. Our standard delivery time is only half of the average western supplier's standard delivery time.

Our microwave measurement capability up to 60GHz makes us the best choice for the design and manufacturing of your components. We implement TQM (Total Quality System) and SOP (Standard Operation Procedure) with ISO 9001:2017 certification, which assures WinFine Telecom's strong commitment to quality standards and customer satisfaction.

We are confident we offer well-engineered, high quality products at globally competitive prices. Our mission is to satisfy our customers by providing timely and cost effective solutions without compromising quality, performance and delivery.

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