Broadband waveguide flat array antenna
An array antenna and broadband technology, applied in the field of broadband waveguide planar array antenna, can solve the problems of inconsistent antenna beam pointing, inability to widen the frequency band, and limit the application of waveguide slot traveling wave array antenna, so as to improve the bandwidth and gain, and broaden the frequency band. Bring the effect
Pending Publication Date: 2022-05-24
西安三维通信有限责任公司
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Problems solved by technology
[0003] The waveguide slot array antenna is divided into waveguide slot traveling wave array and standing wave array. The waveguide slot antenna has the advantages of no dielectric loss, high efficiency and stable performance. However, the beam direction of the waveguide slot traveling wave array antenna changes with frequency, resulting in The antenna beam is inconsistent in the wide frequency range, which leads to the fact that the waveguide slot traveling wave array can only be applied in a very narrow bandwidth under normal circumstances, and the frequency band cannot be widened, which limits the application of the waveguide slot traveling wave array antenna
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Embodiment 1
[0022] See figure 1 , figure 1 This is a schematic structural diagram of a low-profile waveguide flat panel array antenna based on low mutual coupling effect provided by an embodiment of the present invention. The waveguide panel array antenna includes a radiation layer 10 , a rectangular excitation cavity layer 20 and a feeding network layer 30 , wherein the radiation layer 10 and the feeding network layer 30 are respectively disposed on both sides of the rectangular excitation cavity layer 20 . When the antenna receives or transmits a signal, the rectangular excitation cavity layer 20 provides mode excitation for the electromagnetic wave signal received by the radiation layer 10 , and couples the electromagnetic wave signal to the feeding network layer 30 or couples the electromagnetic wave signal in the feeding network layer 30 to Radiation layer 10 .
[0023] See figure 2 , figure 2 It is a schematic structural diagram of a radiation layer provided by an embodiment o...
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The invention relates to a broadband waveguide flat array antenna, which comprises a radiation layer, a rectangular excitation cavity layer and a feed network layer, and is characterized in that the radiation layer and the feed network layer are respectively arranged at two sides of the rectangular excitation cavity layer; radiation slots, first matching steps and decoupling gates are arranged on the radiation layer, the first matching steps are arranged in the radiation slots and close to the side walls of the radiation slots, and the decoupling gates are arranged in the transverse centers of the adjacent radiation slots; the rectangular excitation cavity layer is provided with a rectangular cavity, a second matching step and a rectangular window, the second matching step is arranged in the rectangular cavity and close to the side wall of the rectangular cavity, the second matching step and the first matching step are arranged correspondingly, and the rectangular window is arranged in the center of the rectangular cavity; the feed network layer comprises a plurality of feed waveguides and an H-T waveguide feed network, one end of each feed waveguide is short-circuited, and the other end of each feed waveguide is connected with the H-T waveguide feed network. According to the antenna, the bandwidth and gain of the antenna are improved, and the frequency band of the waveguide slot array antenna is widened.
Description
technical field [0001] The invention belongs to the technical field of microwave communication, and in particular relates to a broadband waveguide plate array antenna. Background technique [0002] With the rapid development of modern communication technology, the requirements of communication systems for antennas are developing in the direction of miniaturization and high efficiency. The waveguide panel array antenna has the characteristics of small size, high efficiency, low profile and light weight, which is very in line with the development direction of modern communication technology. [0003] The waveguide slot array antenna is divided into two forms: the waveguide slot traveling wave array and the standing wave array. The waveguide slot antenna has the advantages of no dielectric loss, high efficiency and stable performance. However, the beam direction of the waveguide slot traveling wave array antenna changes with frequency, resulting in The antenna beam points are ...
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Login to View More IPC IPC(8): H01Q1/36H01Q1/38H01Q21/00
CPCH01Q1/36H01Q1/38H01Q21/0031Y02D30/70
Inventor 张小磊王孟李创波
Owner 西安三维通信有限责任公司