Periodical slow wave structure for 2-D electromagnetic belt gap plane crossing wave guide
A technology of electromagnetic bandgap and waveguide structure, applied in the field of physical electronics, can solve problems such as high Q value and difficult production process, achieve the effect of reducing longitudinal propagation speed, optimizing coupling impedance characteristics, and improving coupling impedance
Inactive Publication Date: 2010-07-28
SOUTHEAST UNIV
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Problems solved by technology
However, the existing technology generally adopts the EBG defect cavity to construct the slow wave structure, and requires the diameter / period ratio of the metal grid point to be below 0.4 to ensure the single-mode working state of the device, and the smaller diameter / period ratio will bring production Difficulties in process, and its Q value is not as high as that of large diameter / period ratio
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[0023] Figure 1, figure 2 As shown, the two-dimensional electromagnetic bandgap planar crossing waveguide periodical slow wave structure of the present invention comprises a metal electromagnetic bandgap waveguide structure, the electromagnetic bandgap waveguide structure is provided with an input port 1 and an output port 2, and the electromagnetic bandgap waveguide structure includes a cavity body 5, metal partitions 6, electron injection channels 4 and metal pillars 31 are arranged in the cavity 5, and the waveguide shape of the electromagnetic bandgap waveguide structure is S-shaped. The cavity 5 is provided with an electron injection port 41 and an electron injection port 42 of the electron injection channel 4 , and a window 61 and an electromagnetic wave channel 62 are provided on the metal partition 6 .
[0024] When working, the electromagnetic wave enters the plane 1 from the input port 1, transmits along the EBG waveguide electromagnetic wave channel 62, and then ent...
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The present invention discloses a two-dimensional electromagnetic bandgap plane-crossing waveguide period type slow waver structure which comprises a metal electromagnetic bandgap waveguide structure which is arranged with an input port and an output port, the electromagnetic bandgap waveguide structure comprises a cavity which is arranged with a metal partition board, an electronic beam channel and a metal column at the inner part, and the invention is characterized in that the waveguide of the electromagnetic bandgap structure is S-shaped. The invention uses the EBG waveguide structure for realizing the monomode and high coupling impedance operation of the device in large diameter / period ratio. The invention adopts EBG waveguide structure and combines the disk-loaded waveguide to form aslow wave structure, in the same waveband the physical dimension is increased comparing with the original slow wave structure and has better heat radiating character; comparing with the original slowwave structure with same dimension the coupling impedance is evidently increased.
Description
technical field [0001] The invention relates to a two-dimensional electromagnetic bandgap planar crossing waveguide periodic slow wave structure, which belongs to the technical field of physical electronics. Background technique [0002] The electromagnetic bandgap structure (called Photonic Band Gap (Photonic Band Gap) in the field of optical frequency, generally called Electromagnetic Band Gap (EBG) in the field of microwave) is an artificial periodic structure that can Make devices on it and limit the direction of electromagnetic waves in it. The use of metal electromagnetic bandgap structures to realize functional devices such as resonant cavities has very good advantages, and can make devices work in the S-band on a larger size. However, the existing technology generally adopts the EBG defect cavity to construct the slow wave structure, and requires the diameter / period ratio of the metal grid point to be below 0.4 to ensure the single-mode working state of the device, ...
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IPC IPC(8): H01P3/00
CPCH01P1/2005
Inventor 柏宁丰孙小菡
Owner SOUTHEAST UNIV