Microwave and millimeter wave large-frequency-ratio common-caliber antenna with high isolation
A high-isolation, millimeter-wave technology, applied in antennas, antenna coupling, resonant antennas, etc., can solve problems such as increasing difficulty and complexity, reducing port isolation, etc., and achieves low processing costs, high port isolation, and topological structure simple effect
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[0055] Below in conjunction with accompanying drawing, the implementation of technical scheme is further analyzed:
[0056] to combine figure 1 , image 3 , Figure 4 , Figure 5 , Figure 6 (a), Figure 6 (b), the common-aperture antenna with high isolation between microwave and millimeter wave with large frequency ratio is composed of three parts: substrate-integrated waveguide cavity-backed slot antenna array C, substrate-integrated waveguide power distribution and feeding network N, and low-frequency feeding part L.
[0057] The 4×4 substrate-integrated waveguide slot array C includes four 2×2 cavity-backed slot antenna sub-array units, and each cavity-backed slot antenna sub-array unit includes metal patches P1, dielectric A plate S1, a metal patch P2, and a metal column M1 penetrating the dielectric plate S1.
[0058] Each 2×2 cavity-backed slot antenna subarray unit includes four square substrate-integrated waveguide cavities of the same size; each substrate-inte...
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