CN204243204U

CN204243204U - Four C-ring Pinwheel Microstrip Antennas

Info

Publication number: CN204243204U
Application number: CN201420778025.XU
Authority: CN
Inventors: 刘娈
Original assignee: China Jiliang University
Current assignee: China Jiliang University
Priority date: 2014-12-11
Filing date: 2014-12-11
Publication date: 2015-04-01
Anticipated expiration: 2024-12-11

Abstract

The utility model discloses a kind of four C shape ring windmill-shape microstrip antennas.It comprises substrate, rectangular patch, left lower C shape ring paster, bottom right anti-C ring paster, upper right anti-C ring paster, upper left C ring paster, convex impedance matching input transmission line, T-shaped metal ground plate; The upper surface of substrate is provided with rectangular patch, C ring paster, anti-C ring paster, convex impedance matching input transmission line, rectangular patch in the geometric center of substrate, left lower C shape ring paster, bottom right anti-C ring paster, upper right anti-C ring paster, upper left C ring paster is connected with four angles of rectangular patch respectively, the top that lower end and the impedance matching of rectangular patch input transmission line is connected, and the impedance matching input other end of transmission line is connected with the bottom of substrate; The lower surface of substrate is provided with T-shaped metal ground plate, and the bottom of T-shaped metal ground plate is connected with the bottom of substrate.It is low that the utility model has loss, and radiation characteristic is good, and cost is low, and size is little, is easy to make, and is convenient to the advantages such as integrated.

Description

Four C shape ring windmill-shape microstrip antennas

Technical field

The utility model relates to antenna, particularly relates to a kind of four C shape ring windmill-shape microstrip antennas.

Background technology

Along with the development of wireless communication technology, the effect of antenna is particularly important.Microstrip antenna adopt have the thin profile not available for conventional aerial, volume little, lightweight, be easy to general character and can with the particular advantages such as solid state device is integrated.And the miniaturization of microstrip antenna size achieves the miniaturization of whole communication system, and the stabilized communication of the special performance guarantee mobile system of the omnidirectional that possesses of the structure of excellence.Therefore, easily processing, microstrip antenna that is miniaturized, the low realistic application of cost cause extensive concern.

The application of microstrip antenna constantly expands in recent years, not simple designs in the past, but for the designing requirement of different communication systems, also more and more higher to the requirement of the property indices such as size, frequency band, gain, antenna pattern, polarization mode characteristic of antenna.Adopt conventional simple microstrip antenna designs method cannot meet system requirements, therefore need the Antenna Construction Design adopting some complexity, and the complicated of structure brings huge challenge to the design of microstrip antenna, machining accuracy and debugging efforts undoubtedly.

Summary of the invention

The utility model provides a kind of four C shape ring windmill-shape microstrip antennas, and technical scheme is as follows:

Four C shape ring windmill-shape microstrip antennas comprise substrate, rectangular patch, left lower C shape ring paster, bottom right anti-C ring paster, upper right anti-C ring paster, upper left C ring paster, convex impedance matching input transmission line, T-shaped metal ground plate; The upper surface of substrate is provided with rectangular patch, C ring paster, anti-C ring paster, convex impedance matching input transmission line, rectangular patch in the geometric center of substrate, left lower C shape ring paster, bottom right anti-C ring paster, upper right anti-C ring paster, upper left C ring paster is connected with four angles of rectangular patch respectively, the top that lower end and the impedance matching of rectangular patch input transmission line is connected, and the impedance matching input bottom of transmission line is connected with the bottom of substrate; The lower surface of substrate is provided with T-shaped metal ground plate, and the bottom of T-shaped metal ground plate is connected with the bottom of substrate.

Described substrate is glass-epoxy material, and the length of substrate is 70mm ~ 72mm, and width is 70mm ~ 72mm.The length of described rectangular patch is 19mm ~ 20mm, and width is 12mm ~ 13mm.Described left lower C shape ring paster outer radius is 10 ~ 12mm, and inside radius is 7 ~ 9mm, and included angle is 30 ° ~ 35 °.Described upper left C ring paster outer radius is 10 ~ 12mm, and inside radius is 7 ~ 9mm, and included angle is 30 ° ~ 35 °.Described bottom right anti-C ring paster outer radius is 10 ~ 12mm, and inside radius is 7 ~ 9mm, and included angle is 30 ° ~ 35 °.Described upper right anti-C ring paster outer radius is 10 ~ 12mm, and inside radius is 7 ~ 9mm, and included angle is 30 ° ~ 35 °.The described longitudinal rectangle transmission line composition of convex impedance matching input transmission line two, wherein the longitudinal rectangle length of transmission line in upper end is 16mm ~ 18mm, and width is 2mm ~ 3mm, and the longitudinal rectangle length of transmission line in lower end is 12mm ~ 14mm, and width is 3mm ~ 4mm.Described T-shaped metal ground plate is made up of a horizontal rectangle metal ground plate and a longitudinal rectangle metal ground plate, wherein horizontal rectangle metal ground plate length is 19mm ~ 21mm, width is 13mm ~ 15mm, and longitudinal rectangle metal ground plate length is 28mm ~ 30mm, and width is 3mm ~ 4mm.

It is low that the utility model has loss, and radiation characteristic is good, and cost is low, and size is little, is easy to make, and is convenient to the advantages such as integrated.

Accompanying drawing illustrates:

Fig. 1 is the Facad structure figure of four C shape ring windmill-shape microstrip antennas;

Fig. 2 is the structure figure of four C shape ring windmill-shape microstrip antennas;

Fig. 3 is the return loss plot of four C shape ring windmill-shape microstrip antennas;

Fig. 4 is the E surface radiation directional diagram when 5.4GHZ and the H surface radiation directional diagram of four C shape ring windmill-shape microstrip antennas;

Fig. 5 is the front face surface current distributing figure when 5.4GHZ of four C shape ring windmill-shape microstrip antennas;

Fig. 6 is the backside surface current distributing figure when 5.4GHZ of four C shape ring windmill-shape microstrip antennas.

Embodiment

As shown in Fig. 1 ~ 2, four C shape ring windmill-shape microstrip antennas, is characterized in that comprising substrate 1, rectangular patch 2, left lower C shape ring paster 3, bottom right anti-C ring paster 4, upper right anti-C ring paster 5, upper left C ring paster 6, convex impedance matching input transmission line 7, T-shaped metal ground plate 8; The upper surface of substrate 1 is provided with rectangular patch 2, left lower C shape ring paster 3, bottom right anti-C ring paster 4, upper right anti-C ring paster 5, upper left C ring paster 6, convex impedance matching input transmission line 7; Rectangular patch 2 is in the geometric center of substrate 1, left lower C shape ring paster 3, bottom right anti-C ring paster 4, upper right anti-C ring paster 5, upper left C ring paster 6 is connected with four angles of rectangular patch 2 respectively, the top that lower end and the impedance matching of rectangular patch 2 input transmission line 7 is connected, and the bottom of impedance matching input transmission line 7 is connected with the bottom of substrate 1; The lower surface of substrate 1 is provided with T-shaped metal ground plate 8, and the bottom of T-shaped metal ground plate 8 is connected with the bottom of substrate 1.

Described substrate 1 is glass-epoxy material, and the length of substrate is 70mm ~ 72mm, and width is 70mm ~ 72mm.The length of described rectangular patch 2 is 19mm ~ 20mm, and width is 12mm ~ 13mm.Described left lower C shape ring paster 3 outer radius is 10 ~ 12mm, and inside radius is 7 ~ 9mm, and included angle is 30 ° ~ 35 °.Described upper left C ring paster 6 outer radius is 10 ~ 12mm, and inside radius is 7 ~ 9mm, and included angle is 30 ° ~ 35 °.Described bottom right anti-C ring paster 4 outer radius is 10 ~ 12mm, and inside radius is 7 ~ 9mm, and included angle is 30 ° ~ 35 °.Described upper right anti-C ring paster 5 outer radius is 10 ~ 12mm, and inside radius is 7 ~ 9mm, and included angle is 30 ° ~ 35 °.The described longitudinal rectangle transmission line composition of convex impedance matching input transmission line 7 two, wherein the longitudinal rectangle length of transmission line in upper end is 16mm ~ 18mm, and width is 2mm ~ 3mm, and the longitudinal rectangle length of transmission line in lower end is 12mm ~ 14mm, and width is 3mm ~ 4mm.Described T-shaped metal ground plate 8 is made up of a horizontal rectangle metal ground plate and a longitudinal rectangle metal ground plate, wherein horizontal rectangle metal ground plate length is 19mm ~ 21mm, width is 13mm ~ 15mm, longitudinal rectangle metal ground plate length is 28mm ~ 30mm, and width is 3mm ~ 4mm.

Embodiment 1

Four C shape ring windmill-shape microstrip antennas:

Select dielectric constant be 4.4 glass-epoxy material make micro-belt substrate, thickness is 1mm.The length of substrate is 70mm, and width is 70mm.The length of rectangular patch is 19mm, and width is 12.9mm.Left lower C shape ring paster outer radius is 10.82mm, and inside radius is 7.72mm, and included angle is 30 °.Upper left C ring paster outer radius is 10.82mm, and inside radius is 7.72mm, and included angle is 30 °.Bottom right anti-C ring paster outer radius is 10.82mm, and inside radius is 7.72mm, and included angle is 30 °.Upper right anti-C ring paster outer radius is 10.82mm, and inside radius is 7.72mm, and included angle is 30 °.The longitudinal rectangle transmission line composition of convex impedance matching input transmission line two, wherein the longitudinal rectangle length of transmission line in upper end is 16mm, and width is 2mm, and the longitudinal rectangle length of transmission line in lower end is 12.5mm, and width is 3mm.T-shaped metal ground plate is made up of a horizontal rectangle metal ground plate and a longitudinal rectangle metal ground plate, and wherein horizontal rectangle metal ground plate length is 19mm, and width is 13mm, and longitudinal rectangle metal ground plate length is 28.5mm, and width is 3mm.The property indices of four C shape ring windmill-shape microstrip antennas adopts CST software to test, and the insertion loss curve of gained as shown in Figure 3.As seen from the figure, the working frequency range of below-10dB is 5.184GHz ~ 5.616GHz.Figure 4 shows that the E face of four C shape ring windmill-shape microstrip antennas when 5.4GHz and H face directional diagram, as seen from the figure, when frequency is 5.4GHz, gain is 4.3dBi, and half power lobe width is 63.4 °.Four fronts of C shape ring windmill-shape microstrip antenna when 5.4GHz, backside surface current distributing figure is respectively shown in Fig. 5, Fig. 6.

Claims

1. a four C-ring pinwheel shape microstrip antenna is characterized in that comprising substrate (1), rectangular patch (2), lower left C-ring patch (3), lower right anti-C-ring patch (4), The upper right reverse C-ring patch (5), the upper left C-ring patch (6), the convex impedance matching input transmission line (7), the T-shaped metal grounding plate (8); the upper surface of the substrate (1) is provided with a rectangular patch (2), lower left C-ring patch (3), lower right reverse C-ring patch (4), upper right reverse C-ring patch (5), upper left C-ring patch (6), convex impedance matching input transmission line ( 7); the rectangular patch (2) is at the geometric center of the substrate (1), the lower left C-ring patch (3), the lower right reversed C-ring patch (4), the upper right reversed C-ring patch (5), and the upper left C The ring patch (6) is respectively connected to the four corners of the rectangular patch (2), the lower end of the rectangular patch (2) is connected to the top end of the impedance matching input transmission line (7), and the bottom end of the impedance matching input transmission line (7) It is connected to the bottom of the substrate (1); the lower surface of the substrate (1) is provided with a T-shaped metal grounding plate (8), and the bottom of the T-shaped metal grounding plate (8) is connected to the bottom of the substrate (1).

2. A kind of four C-ring pinwheel shaped microstrip antennas as claimed in claim 1, is characterized in that described substrate (1) is glass fiber epoxy resin material, and the length of substrate (1) is 70mm～72mm, The width is 70mm ~ 72mm.

3. A four-C-ring windmill-shaped microstrip antenna as claimed in claim 1, characterized in that the length of the rectangular patch (2) is 19 mm to 20 mm, and the width is 12 mm to 13 mm.

4. A kind of four C-shaped ring pinwheel shape microstrip antennas as claimed in claim 1, is characterized in that described left bottom C ring patch (3) and left upper C ring patch (6) shape and size are identical, outer radius 10~12mm, the inner radius is 7~9mm, and the slotting angle is 30°~35°.

5. a kind of four C-shaped ring windmill shape microstrip antennas as claimed in claim 1, it is characterized in that described bottom anti-C ring patch (4) and right upper anti-C ring patch (5) shape and size are identical, The outer radius is 10-12mm, the inner radius is 7-9mm, and the slotting angle is 30°-35°.

6. A kind of four C-shaped ring pinwheel shape microstrip antennas as claimed in claim 1, is characterized in that described convex impedance matching input transmission line (7) is made up of two vertical rectangular transmission lines, wherein the length of vertical rectangular transmission line of upper end The length is 16mm-18mm, the width is 2mm-3mm, the length of the lower longitudinal rectangular transmission line is 12mm-14mm, and the width is 3mm-4mm.

7. A kind of four C-shaped ring pinwheel shaped microstrip antennas as claimed in claim 1, is characterized in that described T-shaped metal grounding plate (8) is made up of a horizontal rectangular metal grounding plate and a vertical rectangular metal grounding plate , wherein the horizontal rectangular metal grounding plate has a length of 19 mm to 21 mm and a width of 13 mm to 15 mm, and a vertical rectangular metal grounding plate has a length of 28 mm to 30 mm and a width of 3 mm to 4 mm.