An LTCC double-layer single-feed circularly polarized microstrip patch array antenna unit

A microstrip patch and array antenna technology, which is applied to antennas, antenna arrays, antenna grounding devices, etc., can solve problems such as low profile gain, and achieve good circular polarization performance, easy integration, and improved stability and reliability. Effect

Active Publication Date: 2020-07-21
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0004] The purpose of the present invention is to provide a double-layer single-feed circularly polarized microstrip patch array antenna unit based on LTCC technology to solve the problem of the existing circularly polarized microstrip patch array antenna taking into account its low profile, circular polarization, The contradiction of high gain and broadband development

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  • An LTCC double-layer single-feed circularly polarized microstrip patch array antenna unit
  • An LTCC double-layer single-feed circularly polarized microstrip patch array antenna unit
  • An LTCC double-layer single-feed circularly polarized microstrip patch array antenna unit

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Embodiment Construction

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but the embodiments of the present invention are not limited thereto.

[0024] An LTCC double-layer single-feed circularly polarized microstrip patch array antenna unit provided in this embodiment has a structure as follows: figure 1 shown, including:

[0025] Upper LTCC substrate 1, such as figure 2 Shown: The substrate is made of 11 LTCC cast film sheets with a thickness of 0.1mm and a dielectric constant of 5.9. The lateral dimension of the substrate is 15mm and the vertical dimension is 15mm; Radiant metal patch, the radiation metal patch is located in the center of the upper substrate, and the side length is 4.6mm; the corners are cut on the opposite corners of the radiation metal patch to achieve circular polarization, and the cut angle is an isosceles right angle with a side length of 0.61mm Triangle, with a rectangular slit of 0.9mm in ...

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Abstract

The invention belongs to the technical field of antennas, and provides an LTCC double-layer single-feed circularly polarized microstrip patch array antenna unit to solve the problem of the existing circularly polarized microstrip patch array antenna taking into account its low profile, circular polarization, and high The contradiction between gain and broadband development; in the antenna unit of the present invention, the size of the upper radiating metal patch is different from that of the lower radiating metal patch, and the resonance frequency of the lower radiating metal patch is higher than the center frequency of the antenna unit and the resonant frequency of the upper radiating metal patch The point is lower than the center frequency of the antenna unit; the cut angle size of the lower radiation metal patch is larger than the cut angle size of the upper radiation metal patch, and the cut angle dimensions of the upper and lower radiation metal patches make the single-point feed square patch produce Two orthogonal degenerate modes with equal amplitudes form a 90° phase difference; the present invention better takes into account the low profile and circular pole of the microstrip patch antenna by using the upper and lower radiating metal patches with the same shape and different sizes. Optimized performance requirements, while greatly improving the frequency bandwidth of the antenna.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a novel LTCC double-layer single-feed circularly polarized microstrip patch array antenna unit. Background technique [0002] The circularly polarized antenna has the orthogonality of handedness, can receive any polarized wave, and its radiated wave can also be received by any polarized antenna; when the circularly polarized wave is incident on a symmetrical target, the reflected wave will be reversed. Compared with the array radiating antenna unit, the array antenna has higher gain, narrower beam, stronger directivity and spatial beam scanning characteristics. The circularly polarized microstrip patch array antenna not only has the advantages of the above two antennas, but also has the advantages of low profile, simple structure, small size, light weight, easy fabrication, low cost, and compatibility with carriers or aircraft. Conformal, easy to achieve circular po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q15/24H01Q21/00
CPCH01Q1/38H01Q1/48H01Q1/50H01Q15/24H01Q21/0006H01Q21/0075
Inventor 张怀武吴同庆杨青慧笪策黄鑫甘功雯
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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