Patent
Wideband TM01 -to-TE11 circular waveguide mode convertor
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TLDR
In this paper, the authors employ two intermediate modes, a coaxial TEM and a rectangular waveguide TE 10 mode, in the transition between the TM 01 and TE 11 circular waveguide modes.Abstract:
The mode convertor employs two intermediate modes, a coaxial TEM and a rectangular waveguide TE 10 mode, in the transition between the TM 01 and TE 11 circular waveguide modes. The coaxial line provides isolation while acting as a mode filter between the device input and output ports. The rectangular waveguide provides a wide mode separation ratio between the TE 10 and TM 11 modes. The TE 10 mode then transitions into the TE 11 in the circular output waveguide. The coaxial section keeps the output TE 11 mode from scattering back to the input, and the rectangular section keeps the TM 01 from being excited in the output.read more
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References
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Journal ArticleDOI
Input impedance of a coaxial line probe feeding a circular waveguide in the TM/sub 01/ mode
TL;DR: In this paper, an exact full-wave solution for the case of a coaxial line probe fending a circular waveguide for TM/sub 01/ modal excitation is given by means of the conversion of complex power technique.
Patent
Compact waveguide converter apparatus
TL;DR: In this paper, a quasi-parallel plate mode was proposed to convert a whispering gallery or volume mode to a more useable mode, such as the HE1,1 mode, in a waveguide mode converter.
Patent
Impedance transformers for microwave transmission lines
TL;DR: In this paper, an adjustable screw is provided through a wall of the one waveguide positioned right above the probe to attain impedance matching in an impedance matching transformer for a microwave transmission line where a pair of orthogonal rectangular waveguides are joined by a rotatable coaxial line.
Patent
Short depth hardened waveguide launcher assembly element
TL;DR: In this article, the authors proposed a waveguide launcher for coupling a coaxial transmission line to a WAS array antenna element, which utilizes its short depth to achieve the desired match between the coaxial connector and free space.
Patent
Waveguide mode coupler for use with gyrotron traveling-wave amplifiers
TL;DR: In this paper, a rectangular waveguide to circular waveguide coupler and vice versa is described, and the coupler is equipped with a first and second waveguide sections with cut-off determining dimensions r 1 proportioned to support both the TE 01 and TE 02 circular electric modes in the region of the gap at the frequency of the applied waves.