A W-band mode generator which converts a TE1,0 rectangular waveguide mode into either a linearly or a circularly polarized TE5,1 circular mode is designed, fabricated, and measured. The generator consists of a mode converter, a waveguide transition, and a polarization converter. The converting...
The amplitudes of the spurious modes due to a small step in an over-moded circular waveguide are computed, assuming that one of the waveguides is fed by a pure H01 mode. It is shown that the amplitude of the H02 mode is the largest of the spurious modes. For the reduction of the co...
Yamato . A design of novel grooved circular waveguide polarizers. IEEE Trans. Microw. Theory Tech. 48, 2446–2452 (2000). Article ADS Google Scholar J. Wang, W. Wu & Z. Shen . Improved polarization converter using symmetrical semi-ring slots. in APSURSI, Memphis, USA, 2052–2053 (...
This paper investigates the microwave breakdown threshold in a circular waveguide excited in the lowest order (TE11) mode, where the electric field strength depends on both the radius and the azimuthal angle. This analysis complements and extends previous investigations of breakdown in cylindrical waveg...
Left side shows the longitudinal cross section of the midband in the compound eye. Right side shows the transverse cross section of the R8 and R1–7 cells along the dashed line in the longitudinal cross section. b Schematics of ommatidium-like double-layer metamaterial (ODLM) design, where ...
A high-power low-loss mode transducer design has been proposed to adapt the output of the X-Band klystron, WR90 rectangular waveguide, to the input of the ... S Tantawi,K Ko,N Kroll - American Institute of Physics 被引量: 20发表: 1993年 Design of a W-Band TE[sub01] Mode Gyrotron...
Numerical design and analysis of a compact TE10 to TE01 mode transducer A high-power low-loss mode transducer design has been proposed to adapt the output of the X-Band klystron, WR90 rectangular waveguide, to the input of the ... S Tantawi,K Ko,N Kroll - American Institute of Physics...
A metasurface unit cell is proposed using a notched circular patch with two metallized vias connected to the bottom-layer coplanar waveguide (CPW) transmission lines. By changing the length of the two transmission lines, different polarization rotation angle may be realized. The proposed metasurface ...
When used with a certain type of antenna that conforms to indoor environments, such as a conventional waveguide and multilayer planar antennas [13,14,15], they can obtain a wide or broad IBW, omnidirectional radiation pattern, high antenna gains and a wide CP band. However, they suffer from...
To improve the transmission characteristics of the terahertz wave, the fiber as one of dielectric waveguides is proposed to replace the metal waveguide, which exhibits good properties for terahertz wave transmission. The loss caused by the absorption of material in the long-distance transmission should...