SSPP-based leaky-wave antenna
A technology of leaky wave antenna and antenna unit, which is applied in the direction of leaky waveguide antenna, antenna grounding switch structure connection, circuit, etc., which can solve the problems of open stop band and inability to realize broadside radiation
Pending Publication Date: 2022-07-29
AIR FORCE UNIV PLA
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Problems solved by technology
However, due to the symmetry of the design structure, the antennas designed by related technologies also have the common open stop band problem of traditional leaky wave antennas, and the inability to achieve broadside radiation is the key to limiting continuous large-angle scanning
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[0044] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be embodied in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
[0045] Furthermore, the drawings are merely schematic illustrations of embodiments of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repeated descriptions will be omitted. Some of the block diagrams shown in the figures are functional entities that do not necessarily necessarily correspond to physically or logically separate entities...
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The embodiment of the invention relates to a leaky-wave antenna based on SSPP. The leaky-wave antenna comprises a dielectric unit which comprises an upper dielectric plate and a lower dielectric plate, and the upper dielectric plate is arranged at the top of the lower dielectric plate; the antenna unit is arranged between the upper dielectric plate and the lower dielectric plate, the antenna unit comprises a coplanar waveguide feed structure, an SSPP transmission line, a first transition section and a second transition section, the first transition section is connected with an antenna port through the coplanar waveguide feed structure, one end of the SSPP transmission line is connected with the first transition section, and the other end of the SSPP transmission line is connected with the second transition section. The other end is connected with the second transition section; and the radiation unit comprises a plurality of upper metal patches and a plurality of lower metal patches, the upper metal patches are arranged at the top of the upper dielectric plate, and the lower metal patches are arranged at the bottom of the lower dielectric plate. According to the embodiment of the invention, the stop-band effect can be suppressed, the scanning range is expanded, and the frequency band of the antenna tends to be close to the cut-off frequency by adjusting the periodic modulation, so that a relatively high scanning rate is shown.
Description
technical field [0001] The embodiments of the present disclosure relate to the field of antenna technologies, and in particular, to an SSPP-based leaky wave antenna. Background technique [0002] Surface plasmon polaritons (SPP) are mixed excited states propagating along the medium-metal interface generated during the interaction of light and metal, which exhibit highly confined surface wave modes in media other than metal. Artificial surface plasmon polaritons (Spoof Surface Plasmon Polaritons, SSPP) is an extension of the SPP concept in the low frequency band. When an electromagnetic wave (Electro-Magnetic, EM) interacts with an artificial electromagnetic medium, a hybrid surface electromagnetic mode will be generated at the interface of the medium. The subwavelength characteristics, local field enhancement and nonlinear dispersion curve characteristics make it have important application value in the design of antennas, such as antennas, filters, transmission lines and so...
Claims
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IPC IPC(8): H01Q1/36H01Q1/50H01Q13/20
CPCH01Q13/20H01Q1/36H01Q1/50
Inventor 曹祥玉蒋欢刘涛吉地辽日李思佳高军
Owner AIR FORCE UNIV PLA