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Broadband low-section dual polarization microstrip antenna adopting latticed radiation pastes

A technology of radiating patch and microstrip antenna, applied in the direction of separately powered antenna array, antenna, antenna array, etc., can solve the problem of increasing the thickness of the antenna, and achieve the effect of increasing the bandwidth, improving the impedance matching performance, and improving the working bandwidth.

Inactive Publication Date: 2017-11-24
TSINGHUA UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Antennas designed through aperture coupling and stacked structures can also increase the operating bandwidth of microstrip antennas to more than 20%, but at the cost of increased antenna thickness

Method used

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  • Broadband low-section dual polarization microstrip antenna adopting latticed radiation pastes
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  • Broadband low-section dual polarization microstrip antenna adopting latticed radiation pastes

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Embodiment Construction

[0024] In order to make the above objects, features and advantages of the present invention more obvious, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] The invention discloses a wide-band low-profile dual-polarized microstrip antenna adopting a grid-shaped radiation patch. It features dual polarization, low profile and broadband. According to design sketch, provide specific embodiment, illustrate below in conjunction with accompanying drawing:

[0026] refer to figure 1 , the antenna of the invention includes an upper substrate 1 and a lower substrate 2 based on printed circuit board technology. The front of the upper substrate 1 is engraved with a 4×4 grid-like radiation patch 3, including 16 square patches of the same size that are arranged periodically. In unit 4, the same spacing is left between patch units, and three grooves 13 are respectively formed in the x direction an...

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Abstract

The invention provides a broadband low-section dual polarization microstrip antenna adopting latticed radiation pastes. The broadband low-section dual polarization microstrip antenna comprises two layers of substrates which are placed up and down; 4*4 latticed radiation pastes placed on the front face of the upper layer of substrate, and the lattices have the same sizes and are periodically arranged; cross coupling grooves engraved on the metal floor on the front face of the lower layer of substrate are respectively symmetrical relative to the x axis and the y axis and are used for activating two orthogonal polarization on the radiation pastes; two Y-shaped microstrip feeder lines vertically to each other and placed on the back surface of the lower layer of substrate are used for activating the above cross coupling grooves, and in order to avoid the intersection of the two microstrip feeder lines, four symmetrical crossover structures are introduced. In the broadband low-section dual polarization microstrip antenna, the 4*4 latticed radiation pastes used by the microstrip antenna can activate the TM10 mode and the inverted TM 20 mode, the two modes can be coupled together by adjusting the sizes of the pastes so as to improve the working bandwidth; and in addition, the sizes of the Y-shaped microstrip feeder lines and the cross coupling grooves are adjusted to improve the impedance matching performance of the antenna, and the bandwidth is further improved.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to a dual-polarization microstrip antenna, in particular to a wide-band low-profile dual-polarization microstrip antenna using a grid-like radiation patch. Background technique [0002] In modern wireless communication systems, dual-polarized antennas are widely used in wireless communication base station systems due to their planned diversity characteristics, which can effectively expand channel capacity and alleviate the problem of multipath attenuation. At the same time, due to the advantages of low profile, light weight, low cost and easy integration with active devices and circuits, the research and design of dual-polarized microstrip antennas has attracted extensive attention. However, the traditional microstrip antenna has a relatively narrow bandwidth (about 5%) due to its high-Q resonant characteristics, which is greatly limited in practical applications. Therefore, how to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q15/24H01Q21/00H01Q21/06
CPCH01Q1/38H01Q1/50H01Q15/24H01Q21/0075H01Q21/065
Inventor 李越孙旺宇刘培钦张志军冯正和
Owner TSINGHUA UNIV
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