Generation of High-Order Waveguide Modes with Reduced Symmetric Protection

On the Benefits of Glide Symmetries for Microwave Devices

“…Additionally, the first two modes are also more linear for the glide-symmetric case, which means that its response is less dispersive. The dispersion behaviour of 1-D structures has been reported in the literature for corrugated structures [8], [50], [54], co-planar technology [55], [56], planar bifilar lines [57], acoustic waves [58], and corrugated waveguides [59]. In 1-D waveguides or transmission lines, the ability to modify the propagation constant is not especially interesting.…”

A high-order TE50 mode waveguide with single mode transmission property and its application in slot array antenna

“…For this reason, any fabrication errors may result in the deterioration of these devices' performance. As discussed in [23], a new approach to design the metamaterial-based waveguide devices are introduced. A mode filter that can only support single-mode transmission, is achieved by stimulating the high-order waveguide mode among the bandgap of other-order modes.…”

“…To confirm the above analysis, a centre fed coaxial-to-waveguide converter is proposed as the exciting port. Compared with the TE 10 -to-TE n0 waveguide convertor employed in [23] based on the wave impedance matching technique, our proposed method delivers comparable transmission performance with relatively lower return loss in the working band. For the convenience of simulation, an ideal waveguide port is used as the output to absorb different order waveguide modes and minimize the undesired reflection.…”