High-gain low-profile transmission array antenna
An array antenna, low-profile technology, applied to antennas, waveguide horns, electrical components, etc., can solve the problems of poor array antenna performance, increase the transmission array profile, increase the difficulty of array processing, etc., achieve low cross-polarization, increase Large phase shift range, beneficial to system integration
Active Publication Date: 2020-01-31
NANJING UNIV OF SCI & TECH
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Problems solved by technology
In order to achieve 360° phase compensation, the traditional transmission array antenna uses a multi-layer dielectric plate structure to increase the phase shift. However, the use of multi-layer dielectric plates will increase the cross-section of the transmission array, increase the difficulty of array processing, and complicate structure installation. This will cause certain errors, and the actual performance of the array antenna will deteriorate
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[0020] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0021] In one embodiment, combined with figure 1 , the present invention provides a high-gain low-profile transmission array antenna, including a pyramidal horn antenna 1 and a transmission array 2; the pyramidal horn antenna 1 is used as a feed source, located directly above the center of the transmission array 2, and is used to emit spherical electromagnetic waves to Transmission array 2, since the incident wave is a spherical wave, the path lengths to different transmission units are different, resulting in different phase compensation amounts required for different inc...
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Abstract
The invention discloses a high-gain low-profile planar transmission array antenna. The antenna comprises a pyramid horn antenna and a transmission array; the pyramid horn antenna serves as a feed source, is located just over the transmission array and is used for transmitting spherical electromagnetic waves to the transmission array; the transmission array comprises a plurality of transmission units and is used for converting spherical electromagnetic waves emitted by the pyramid horn antenna into planar electromagnetic waves and radiating the planar electromagnetic waves out, thereby realizing the high gain of the antenna; each transmission unit comprises a dielectric layer, metal layers and metallized through holes, wherein the metal layers are located on the upper surface and lower surface of the dielectric layer, the metallized through holes penetrate through the dielectric layer, are located between the upper metal layer and the lower metal layer and are connected with the upper metal layer and lower metal layer. Compared with a multi-layer transmission array antenna with an air layer, the high-gain low-profile planar transmission array antenna of the invention is only provided with one dielectric layer and two metal layers, and is provided with no air layers, and therefore, the profile height of the array can be effectively reduced, the installation process of the array is simplified, and errors caused by installation precision are avoided. The high-gain low-profile planar transmission array antenna has the advantages of high efficiency, high gain, low cross polarization and the like.
Description
technical field [0001] The invention relates to the technical field of antennas, in particular to a high-gain low-profile transmission array antenna. Background technique [0002] In modern society, with the rapid development of communication technologies such as radar systems and satellite communications, there is an increasing demand for high-gain antennas. Lens antennas and microstrip array antennas are traditional high-gain antennas. The lens antenna is composed of a radiator and a curved dielectric lens. Due to the large thickness of the dielectric, the lens antenna is bulky and cannot meet the requirements of system integration in modern communication applications. Although the microstrip array antenna has low profile, small size and easy integration, its complex feed network leads to high loss, which affects the gain and efficiency of the antenna. [0003] Planar transmission array antenna is a new type of high-gain antenna that combines the advantages of lens anten...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01Q13/02H01Q15/02H01Q19/08
CPCH01Q13/02H01Q15/02H01Q19/08
Inventor 郭璐朱虹冯文杰
Owner NANJING UNIV OF SCI & TECH