A Broadband Double-layer Metal Transmissive Array Antenna with Polarization Rotation

A double-layer metal, polarization rotation technology, applied in antennas, antenna grounding switch structure connections, electrical components, etc., can solve the problems of low stability of transmission array gain, transmission unit phase shift range of less than 360°, and narrow frequency band. Achieve the effect of wide passband range, simple structure and wide frequency range

Active Publication Date: 2021-11-16
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The current transmission array design uses at least three layers of metal structure to ensure that the transmission unit has a sufficient phase shift range; or has a double-layer structure, and the phase shift range of the transmission unit is less than 360°; or requires dielectric support, which is not suitable for more stringent applications. Environment, such as places with large temperature changes
The gain stability of the transmission array of the current double-layer metal structure is low, and the frequency band corresponding to the -1dB gain bandwidth is relatively narrow

Method used

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  • A Broadband Double-layer Metal Transmissive Array Antenna with Polarization Rotation
  • A Broadband Double-layer Metal Transmissive Array Antenna with Polarization Rotation
  • A Broadband Double-layer Metal Transmissive Array Antenna with Polarization Rotation

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Embodiment Construction

[0035] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it is not used as a basis for any limitation on the invention.

[0036] Such as figure 1 As shown, it is a schematic structural view of the broadband double-layer metal transmission array antenna of the present invention. The embodiment of the invention includes a transmission array 1 and a feed antenna 2; the feed antenna 2 adopts a pyramid horn antenna or a conical horn antenna, and is located in the transmission array 1, and the phase center of the feed antenna 2 is located at the focal point of the transmissive array 1. The spherical wave generated by the feed antenna 1 is received by the transmission array 2 and converted into a plane wave by the transmission array 2 to radiate out.

[0037] In one embodiment of the present invention...

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Abstract

The invention discloses a broadband double-layer metal transmission array antenna with polarization rotation characteristics, which comprises a transmission array composed of several transmission units distributed periodically and a feed antenna. The transmission unit includes an upper metal layer, a lower metal layer and a metal column; the upper metal layer with two U-shaped gaps of different lengths and the U-shaped gaps of the lower metal layer are orthogonally distributed; the metal column connects the upper metal layer and the lower layer metal layer. The phase center of the feed antenna is located at the focal point of the transmission array, and the spherical electromagnetic wave emitted to the transmission array; the transmission array converts the spherical electromagnetic wave emitted from the feed antenna into a planar electromagnetic wave. The broadband double-layer metal transmission array antenna with polarization rotation characteristic of the present invention uses few metal layers, is not affected by medium, has large power capacity and high reliability, and is suitable for relatively strict working environments.

Description

technical field [0001] The invention relates to antenna design technology, in particular to a broadband double-layer metal transmission array antenna with polarization rotation characteristics. Background technique [0002] With the rapid development of technologies such as modern satellite communications and radar detection systems, the demand for broadband high-gain antennas is increasing. Traditional antennas with high gain characteristics include lens antennas and microstrip array antennas. The dielectric lens profile in a lens antenna is high. The processing is complex; although the microstrip array antenna has a low profile and is easy to process, it requires a complex feed network and the available bandwidth is narrow. A transmissive array antenna is a discrete planar lens that combines the advantages of a lens antenna and a microstrip array antenna. Transmission arrays have attracted extensive attention due to their planar structures, which do not require complica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/50H01Q19/06H01Q15/02H01Q15/24H01Q3/44
CPCH01Q1/50H01Q3/44H01Q15/02H01Q15/242H01Q19/06
Inventor 胡伟董健身吴昊董名洋陈霑蔡元铭
Owner XIDIAN UNIV
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