Single-layer realizable high-aperture efficiency shunt-fed waveguide slot array antenna
A technology of array antenna and waveguide slot, which is applied to antenna arrays, antennas, antenna arrays and other directions that are energized separately, can solve problems such as complex processing, achieve high aperture efficiency, improve aperture efficiency, and avoid the effects of processing technology
Active Publication Date: 2021-07-09
NANJING UNIV OF SCI & TECH
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Problems solved by technology
The gap waveguide does not need to consider the electrical contact between the layers of the traditional waveguide slot array antenna, so the process avoids expensive technologies such as compressed ceramics, but its structure also makes the processing more complicated
Method used
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Embodiment 2
[0054] The effective aperture area of embodiment 2 is 248mm × 224mm, the thickness of the radiation slot 4 on the upper layer of the waveguide radiation unit 3 is 1mm, and the height h of the inner E-plane waveguide and the feeding network 2 is 18mm, which can range from half a wavelength to one Further optimization and adjustment within the wavelength range, E-plane waveguide T-section, E-plane waveguide impedance converter 6 and E-plane transmission waveguide 9 can be optimized to achieve good impedance matching; the array adopts coaxial probe to waveguide feeding, The coaxial probe of the feeding structure 8 is connected to the E-plane waveguide impedance converter 6, the diameter of the probe is 0.6 mm, the diameter of the external medium is 2 mm, and the length of the probe inserted into the E-plane waveguide impedance converter 6 is 3.6 mm.
[0055] Figure 7 The simulation diagram of the reflection coefficient of the example embodiment 1 is given, and it can be seen f...
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The invention discloses a single-layer realizable high-aperture efficiency shunt-fed waveguide slot array antenna, which takes an E-plane waveguide as a main body and adopts a shunt-fed mode to realize that a feed layer and a radiation layer are positioned on the same layer. The antenna comprises an E-plane waveguide shunt-feed feed network wrapped by external metal, a plurality of waveguide radiation units and a radiation slot; the E-plane waveguide parallel feed network comprises an input port and four output ports; each output port is connected with a waveguide radiation unit, and a radiation slot is arranged above each waveguide radiation unit; electromagnetic waves are input into the waveguide radiation unit through the E-plane waveguide shunt-fed feed network and then are radiated outwards through the radiation slots. The antenna can be transversely expanded to meet the multi-unit performance requirement. The antenna has the advantages of realization of a single layer, high aperture efficiency, high gain, low cross polarization, wide band, simple structure and low cost.
Description
technical field [0001] The invention belongs to the field of high caliber efficiency array antennas, in particular to a high caliber efficiency feed waveguide slot array antenna which can be realized by a single layer. Background technique [0002] High-aperture efficiency and high-gain array antennas have broad applications in satellite communications and radar detection. Array antennas with traditional microstrip structures often suffer from low antenna efficiency due to a large number of losses including dielectric loss, radiation loss, and mutual coupling. However, waveguide slot antennas can avoid this problem and become commonly used in the field of large-size and high-gain antennas. Method to realize. [0003] At present, a large part of the waveguide slot array adopts the method of series feed. When realizing a large array, it is necessary to arrange a more complicated feed waveguide structure, and the beam of the series feed array will shift with the change of freq...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01Q21/00H01Q21/06H01Q1/36H01Q5/55
CPCH01Q21/0068H01Q21/064H01Q1/36H01Q5/55
Inventor 张金栋张景怡吴文王子洋陈峤羽蔡嘉琦赵婉清牛哲源魏同飞孟繁宇
Owner NANJING UNIV OF SCI & TECH