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All-dielectric integrated ultra-wideband low-profile multi-morphology conformal phased array antenna

A phased array antenna and ultra-wideband technology, which is applied in antennas, resonant antennas, antenna arrays, etc., can solve problems such as the difficulty of wideband scanning arrays, and achieve the effects of reduced antenna profile, good structural stability, and easy assembly

Active Publication Date: 2022-06-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the traditional continuous current surface antenna array is that its section height often requires a quarter of the wavelength of the center frequency (λ 0 / 4) Above, the main factor limiting its profile is the equivalent inductance from the ground, and in order to achieve unidirectional radiation and high gain, the ground is indispensable
Although capacitive coupling is introduced through the capacitance of the gap between adjacent array elements to offset the ground inductance, the profile can be reduced to a certain extent, but the profile height is lower than λ 0 / 4 wide-angle, broadband scanning array is still very difficult, such as the tightly coupled dipole array in the document "Dual-Polarized Tightly Coupled Array With SubstrateLoading" (IEEE Antennas and Wireless Propagation Letters), although ultra-wide bandwidth angular scanning has been achieved , but even ignoring the height of the feed balun below the ground, the profile of the antenna layer is approximately λ 0 / 2

Method used

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  • All-dielectric integrated ultra-wideband low-profile multi-morphology conformal phased array antenna
  • All-dielectric integrated ultra-wideband low-profile multi-morphology conformal phased array antenna
  • All-dielectric integrated ultra-wideband low-profile multi-morphology conformal phased array antenna

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Embodiment 1

[0023] Example 1: 8×8 Planar Array Design

[0024] In this embodiment, the array element structure is as follows figure 1 , the unit size is 12×12mm 2 , the operating frequency is 6-12GHz, the antenna is a multi-layer structure, and from top to bottom are the wide-angle broadband matching layer (01), the feeding balun layer (02), the radiation patch layer (03), the artificial magnetic surface layer ( 04), dielectric isolation layer (05), floor (06). The relative dielectric constants of the used dielectric substrates are: the first dielectric substrate: 3.0; the second to fifth dielectric substrates: 2.2. The thickness of the first dielectric substrate is: 2.3 mm; the thickness of the second dielectric substrate is: 0.254 mm; the thickness of the third dielectric substrate is: 1 mm, the thickness of the fourth dielectric substrate is: 0.254 mm; the thickness of the fifth dielectric substrate is: 0.787 mm.

[0025] Periodically arranged metamaterial units (011) are arranged o...

Embodiment 2

[0033] Example 2: 3×16 Conformal Array Design

[0034] See the front view of the conformal array in this embodiment figure 2 , the array unit is the same as in Example 1. The E surface is the xoz surface, and the center of the array element is used as the reference. There are 16 sub-arrays arranged on the arc surface with a radius of 250 mm and an angle range of 44 degrees; the internal arrangement direction of the sub-array is the H surface, that is, the yoz surface. A subarray consists of three units.

[0035] The center unit of the conformal array scans the active standing wave from the side-fire to 60 degrees on the E plane. Figure 5 , except that the 60-degree measured result is slightly higher than 2.5 in the narrow band, the simulation and measured results are both lower than 2.5 in the 60-degree scanning range in the band.

[0036] To sum up, the present invention proposes a design method of a low-profile conformal antenna array. The all-dielectric integrated ultra-...

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Abstract

The invention belongs to the technical field of antenna engineering and wireless communication, and relates to an all-dielectric integrated ultra-wideband low-profile multi-form conformal phased array antenna. The antenna is a planar array or a conformal array composed of array elements, and each array element includes a wide-angle broadband matching layer, a feeding balun layer, a radiation antenna layer, an artificial magnetic surface layer, and a dielectric layer stacked from top to bottom. Isolation layer, and floor. The invention replaces the vertical feed balun in the traditional continuous current surface antenna with a horizontal capacitively coupled feed patch above the dipole, and uses an artificial metamaterial wide-angle broadband matching layer and an artificial magnetic surface to ensure The wide-angle and wide-band scanning characteristics of the antenna greatly reduce the antenna profile, and it is suitable for the plane or cylinder conformal of wide-angle and wide-band scanning phased array antennas in high-speed communication systems.

Description

technical field [0001] The invention belongs to the technical field of antenna engineering and wireless communication, and relates to an all-dielectric integrated ultra-wideband low-profile polymorphic conformal phased array antenna, which is suitable for the planar or cylindrical common phased array antenna of wide-angle and wideband scanning phased array antennas in high-speed communication systems. shape. Background technique [0002] Broadband phased array antenna is an important component of modern high-speed communication systems. For example, in an electronic countermeasure system, a broadband phased array antenna can replace multiple sets of narrowband antennas, which can greatly save weight, volume and cost. In recent years, multi-functional integrated phased array antennas such as wide-angle broadband scanning and low profile have become a research hotspot. Compared with planar antenna arrays, conformal antenna arrays have more advantages when assembled on aircraft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/50H01Q1/38H01Q3/34H01Q9/28H01Q21/06
CPCH01Q1/50H01Q1/38H01Q9/285H01Q3/34H01Q21/06H01Q21/062
Inventor 屈世伟侯中友李鹏发于大群闫开杨仕文
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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