Triple Spring Microstrip Antenna
A microstrip antenna and spring-shaped technology, which is applied in the direction of antenna, antenna grounding device, antenna grounding switch structure connection, etc., can solve the problems of only a few tenths to a few percent of the bandwidth and narrow frequency band, and achieve quality Lightweight, good radiation characteristics, and simple structure
Inactive Publication Date: 2016-01-06
CHINA JILIANG UNIV
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Problems solved by technology
However, the most serious defect of the microstrip antenna is the narrow frequency band. Compared with the logarithmic periodic antenna, waveguide horn antenna, and helical antenna, which generally work at a bandwidth of more than tens of percent, the bandwidth of a typical microstrip antenna is only 100%. a few tenths to a few percent
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Embodiment 1
[0018] A glass fiber epoxy resin material with a dielectric constant of 4.4 is selected to make a microstrip substrate with a thickness of 1.6 mm. The substrate has a length of 22 mm and a width of 50 mm. The rectangular radiating patch has a length of 22 mm and a width of 18 mm. The impedance-matched input transmission line has a length of 22mm and a width of 6.5mm. The size parameters of the upper spring radiation patch, the middle spring radiation patch and the lower spring radiation patch are the same, the total length is 4.5mm, the total height is 7.5mm, and the width is 0.5mm; the length of the large rectangular metal ground plate is uniform. is 22mm, and the width is 21mm. The rectangular small metal ground plate has a length of 6mm and a width of 2mm. The performance indicators of the three-spring microstrip antenna are tested and analyzed by CST software, and the obtained S-parameter curve is as attached image 3 As shown, it can be seen from the figure that the w...
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The invention discloses a three-spring microstrip antenna. It includes substrate, rectangular radiating patch, impedance matching input transmission line, upper spring radiating patch, middle spring radiating patch, lower spring radiating patch, large rectangular metal grounding plate, small metal grounding plate; the upper surface of the substrate has a rectangular Radiation patch, impedance matching input transmission line, upper spring radiation patch, middle spring radiation patch, lower spring radiation patch, the lower surface of the substrate is provided with a large rectangular metal grounding plate and a small metal grounding plate; the right side of the impedance matching input transmission line The side is connected to the upper spring radiation patch, the middle spring radiation patch, and the lower spring radiation patch. The lower end of the impedance matching input transmission line is connected to the bottom end of the substrate, and the bottom ends of the large rectangular metal grounding plate and the small metal grounding plate are respectively connected to the substrate. connected at the bottom. The invention has the advantages of good radiation characteristics, multiple frequency bands, simple structure, small volume, light weight, convenient manufacture and easy integration.
Description
technical field [0001] The invention relates to antennas, in particular to a three-spring microstrip antenna. Background technique [0002] The concept of the microstrip antenna was proposed by Dcschalnps as early as 1953, but it did not attract the attention of the engineering community. There were only some sporadic researches in the 1950s and 1960s, but after 20 years, when a better theoretical model and The actual antennas were not fabricated until the development of photolithographic techniques for copper- or gold-clad dielectric substrates. This kind of substrate has a wide range of dielectric constant values, has heat absorption characteristics, mechanical properties and low loss tangent. The earliest microstrip antennas were developed by Howell and Munsonl in the early 1970s. Since then, the research on microstrip antennas has developed rapidly, and microstrip antennas with new forms and new performances continue to emerge. Researchers in this field A large number ...
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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q5/20H01Q5/307
Inventor 李九生
Owner CHINA JILIANG UNIV