Wide-angle radiation microstrip patch antenna
A technology of microstrip patch antenna and microstrip patch, which is applied in the directions of antenna grounding device, radiation element structure, antenna grounding switch structure connection, etc., which can solve unfavorable antenna, network integrated design, bulky structure and low profile design and other problems, to meet the requirements of wide bandwidth angular circular polarization radiation and the effect of simple antenna structure
Pending Publication Date: 2020-03-13
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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[0004] 2. Circularly polarized microstrip antenna form with external circularly polarized bridge. The axial ratio and standing wave bandwidth of this form of microstrip antenna are generally wider than 3dB. The axial ratio bandwidth is greater than 15%, and the standing wave bandwidth of less than 2 is greater than 20. %, but the external circular polarization bridge takes up a lot of space, the feeder is long, and the difference loss is large, which is not conducive to the integrated design of antenna and network
[0005] 3. The waveguide structure circularly polarized antenna has high radiation efficiency and a bandwidth greater than 15% with an axial ratio of less than 3dB, but the feed network takes up a lot of space and has a bulky structure, which is not conducive to the low profile design of the antenna
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[0026] refer to figure 1 , figure 2 and image 3 , Figure 4 The wide-angle radiation microstrip patch antenna of the present invention consists of an upper dielectric board 1, a lower dielectric board 2, a radio frequency connector 3, and a parasitic radiation rectangular patch 4, and is characterized in that:
[0027] The upper dielectric board 1 is a microwave printed board material FR4, which has a sheet-like structure in the forward direction, with a thickness of 1 mm and a dielectric constant of 4.4. An upper rectangular microstrip patch 5 is engraved on its lower surface, and the side length is a=0.28λ, λ The center frequency point for the antenna works corresponds to the wavelength, and the cut corner is processed, and the cut part is an isosceles triangle structure, and the waist length c=0.04λ 0 , there is no copper clad layer on the upper surface of the upper dielectric board 1;
[0028] The lower dielectric board 2 is arranged directly under the upper dielectr...
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Abstract
The invention discloses a wide-angle radiation microstrip patch antenna, and belongs to the field of antenna surveying and mapping. The antenna comprises a lower dielectric plate and an upper dielectric plate. The upper dielectric plate is located right above the lower dielectric plate, and a communication cavity filled with air is formed between the upper dielectric plate and the lower dielectricplate. A lower rectangular microstrip patch is arranged on the upper surface of the lower dielectric plate, four parasitic radiation rectangular patches extending upwards are evenly distributed on the lower rectangular microstrip patch, and the parasitic radiation rectangular patches are electrically connected with the side edges of the lower rectangular microstrip patch. The antenna provided bythe invention is simple and compact in structure, can meet the broadband wide-angle circularly polarized radiation requirement, meets the requirement of electrically small size, and can be used as a radiation unit of a phased-array antenna.
Description
technical field [0001] The invention relates to a wide-angle radiation patch antenna in the field of antenna measurement and control such as communication, navigation, measurement and control, and radar measurement and control. Background technique [0002] At present, circularly polarized antennas are widely used in communication, navigation, and measurement and control systems. They have the characteristics of anti-interference and suppression of electromagnetic wave multipath effects. Circularly polarized antennas mainly have the following structural forms. Although they have their own characteristics in terms of performance, but There are some deficiencies. [0003] 1. Cutting angle circularly polarized microstrip antenna: This type of antenna has a simple structure and a low profile, but the axial ratio and standing wave bandwidth of the antenna are less than 2%. [0004] 2. Circularly polarized microstrip antenna form with external circularly polarized bridge. The axi...
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IPC IPC(8): H01Q1/36H01Q1/38H01Q1/48H01Q1/50
CPCH01Q1/36H01Q1/38H01Q1/48H01Q1/50
Inventor 董建明
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP