A locator antenna for container

Abstract

The present invention discloses a locator antenna for a container, wherein the locator antenna is provided with a T-shaped PCB board; the PCB board is composed of a vertical board and a horizontal board; a first microstrip is printed on the right side of the vertical board along the vertical direction; a first microstrip group and a second microstrip with the left end flush are provided on the left side of the horizontal board; a third microstrip integrally formed with the second microstrip is provided at the lower part of the second microstrip; a fourth microstrip is provided at the upper part of the second microstrip; a fifth microstrip and a second microstrip group flush with the left side are provided on the right side of the horizontal board. Through the above scheme, the present invention has the advantages of small size and excellent performance, and has high practical value and promotion value in the field of container positioning technology.

Description

Technical Field

[0001] The invention relates to the technical field of container positioning, in particular to a locator antenna for a container. Background Art

[0002] In the logistics and transportation industry, long-distance transportation of large quantities of materials through containers is one of the common means in the industry. During container transportation, the positioning of the container can provide real-time information about the transportation route and real-time location of the container, and can also ensure the safety of the items in the container. In order to solve problems such as power consumption and disassembly, the applicant has filed a Chinese invention patent with the patent application number "2020214590132" and the name "A container locator". At present, the power consumption of antennas in the prior art is relatively high and cannot meet the needs of container locators. In addition, the antennas in the prior art are relatively large in size and cannot meet the requirements of lightweight.

[0003] Therefore, there is an urgent need to propose a locator antenna for containers with simple structure, small size and excellent performance. Summary of the invention

[0004] In view of the above problems, the object of the present invention is to provide a locator antenna for a container. The technical solution adopted by the present invention is as follows:

[0005] A locator antenna for a container, connected to a coaxial line of a locator, the locator antenna is provided with a T-shaped PCB board; the PCB board is composed of a vertical board and a horizontal board; a first microstrip is printed on the right side of the vertical board along the vertical direction; a first microstrip group and a second microstrip with left ends flush are provided on the left side of the horizontal board; a third microstrip integrally formed with the second microstrip is provided at the lower part of the second microstrip; a fourth microstrip is provided at the upper part of the second microstrip; a fifth microstrip and a second microstrip group flush with the left side are provided on the right side of the horizontal board;

[0006] The first microstrip group includes a sixth microstrip arranged in the vertical direction and having its top flush with the top of the transverse plate, and a seventh microstrip, an eighth microstrip and a ninth microstrip which are connected in sequence to form a U shape and are connected to the lower end of the sixth microstrip;

[0007] The second microstrip group includes a tenth microstrip whose left side is flush with the left side of the fifth microstrip and arranged in parallel with the fifth microstrip, and an eleventh microstrip connected to the tenth microstrip and flush with the top of the tenth microstrip;

[0008] The second microstrip and the fourth microstrip are both connected to the coaxial line of the positioner.

[0009] Further, the length of the first microstrip is 5.5 mm and the width is 3 mm; the length of the first microstrip group is 3.6 mm and the width is 2.1 mm; the length of the second microstrip and the fifth microstrip are 12.4 mm and the width is 0.6 mm; the length of the third microstrip is 0.8 mm and the width is 0.3 mm; the fourth microstrip is a square with a side length of 0.7 mm; the length of the second microstrip group is 13.7 mm and the width is 2 mm;

[0010] The spacing between the first microstrip and the second microstrip is 0.7mm; the distance between the third microstrip and the left side of the second microstrip is 4mm; the spacing between the first microstrip group and the second microstrip is 1mm; the lateral distance between the first microstrip group and the fourth microstrip is 1.5mm; the vertical distance between the first microstrip group and the second microstrip is 0.4mm; the vertical distance between the second microstrip and the second microstrip group is 1mm, and the lateral distance between the second microstrip and the second microstrip group is 0.9mm; the vertical distance between the fifth microstrip and the second microstrip group is 0.5mm.

[0011] Furthermore, the sixth microstrip is a square with a side length of 0.6 mm; the seventh microstrip and the ninth microstrip are 3 mm in length and 0.6 mm in width; and the eighth microstrip is 1.5 mm in length and 0.6 mm in width.

[0012] Furthermore, the length of the tenth microstrip is 5.5 mm and the width is 0.5 mm; the length of the eleventh microstrip is 8.2 mm and the width is 2 mm.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention realizes microstrip integration and reduces the occupied area by printing microstrip components on a PCB board and planning the size and layout of the microstrip; the present invention has good performance through antenna standing wave, efficiency and gain tests. In summary, the present invention has the advantages of small size and excellent performance, and has high practical value and promotion value in the field of container positioning technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope of protection. For those skilled in the art, other related drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 This is the antenna standing wave test diagram of the present invention.

[0018] Figure 3 It is a comparison chart of antenna efficiency and gain test data of the present invention.

[0019] In the above drawings, the component names corresponding to the reference numerals are as follows:

[0020] 1. PCB board; 2. first microstrip; 3. first microstrip group; 4. second microstrip; 5. third microstrip; 6. fourth microstrip; 7. fifth microstrip; 8. second microstrip group; 11. vertical board; 12. horizontal board; 31. sixth microstrip; 32. seventh microstrip; 33. eighth microstrip; 34. ninth microstrip; 81. tenth microstrip; 82. eleventh microstrip. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of this application clearer, the present invention is further described below in conjunction with the accompanying drawings and embodiments, and the embodiments of the present invention include but are not limited to the following embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0022] Example

[0023] like Figure 1 As shown, this embodiment provides a locator antenna for a container, which is connected to the coaxial line of the locator; in this embodiment, the locator antenna is provided with a T-shaped PCB board; the PCB board is composed of a vertical board 11 and a horizontal board 12; a first microstrip 2 is printed on the right side of the vertical board 11 along the vertical direction; a first microstrip group 3 and a second microstrip 4 with the left end flush are provided on the left side of the horizontal board 12; a third microstrip 5 integrally formed with the second microstrip 4 is provided at the lower part of the second microstrip 4; a fourth microstrip 6 is provided at the upper part of the second microstrip 4; a fifth microstrip 7 and a second microstrip group 8 flush with the left side are provided on the right side of the horizontal board 12. The second microstrip 4 and the fourth microstrip 6 are both connected to the coaxial line of the locator. It should be noted that the serial number terms such as "first" and "second" described in this embodiment are only used to distinguish similar components and cannot be understood as a specific limitation on the scope of protection. In addition, the directional terms such as "left side", "right side", "upper part" and "lower part" described in this embodiment are explained based on the accompanying drawings.

[0024] In this embodiment, the first microstrip group 3 includes a sixth microstrip 31 arranged in the vertical direction and having its top flush with the top of the transverse plate 12, and a seventh microstrip 32, an eighth microstrip 33 and a ninth microstrip 34 which are connected in sequence to form a U shape and are connected to the lower end of the sixth microstrip 31. The sixth microstrip 31 is a square with a side length of 0.6 mm; the seventh microstrip 32 and the ninth microstrip 34 are 3 mm long and 0.6 mm wide; the eighth microstrip 33 is 1.5 mm long and 0.6 mm wide.

[0025] In addition, the second microstrip group 8 of the present embodiment includes a tenth microstrip 81 whose left side is flush with the left side of the fifth microstrip 7 and arranged in parallel with the fifth microstrip 7, and an eleventh microstrip 82 connected to the tenth microstrip 81 and flush with the top of the tenth microstrip 81. The tenth microstrip 81 has a length of 5.5 mm and a width of 0.5 mm; the eleventh microstrip 82 has a length of 8.2 mm and a width of 2 mm.

[0026] In this embodiment, the length of the first microstrip 2 is 5.5 mm and the width is 3 mm; the length of the first microstrip group 3 is 3.6 mm and the width is 2.1 mm; the length of the second microstrip 4 and the fifth microstrip 7 is 12.4 mm and the width is 0.6 mm; the length of the third microstrip 5 is 0.8 mm and the width is 0.3 mm; the fourth microstrip 6 is a square with a side length of 0.7 mm; the length of the second microstrip group 8 is 13.7 mm and the width is 2 mm. The spacing between the first microstrip 2 and the second microstrip 4 is 0.7mm; the distance between the third microstrip 5 and the left side of the second microstrip 4 is 4mm; the spacing between the first microstrip group 3 and the second microstrip 4 is 1mm; the lateral distance between the first microstrip group 3 and the fourth microstrip 6 is 1.5mm; the vertical distance between the first microstrip group 3 and the second microstrip 4 is 0.4mm; the vertical distance between the second microstrip 4 and the second microstrip group 8 is 1mm, and the lateral distance between the second microstrip 4 and the second microstrip group 8 is 0.9mm; the vertical distance between the fifth microstrip 7 and the second microstrip group 8 is 0.5mm.

[0027] like Figures 2 to 3 As shown, in this embodiment, through the standing wave, efficiency and gain tests, it can be seen that the antenna has good comprehensive performance. The following is a summary and analysis;

[0028] Figure 2 Frequency-voltage standing wave ratio: the ratio between the peak value and the valley value of the standing wave voltage. Ideally, the standing wave ratio is 1, indicating that the antenna feed line and antenna impedance are perfectly matched and there is no reflection transmission loss. The VSWR of this antenna is less than 5 in the frequency range of 700Mhz--2700Mhz.

[0029] Figure 3The antenna gain reflects the antenna's ability to transmit electromagnetic waves in a directional manner. Antenna gain is usually inversely proportional to the antenna's radiation angle, that is, the antenna's half-power beam width. The greater the antenna gain, the smaller its radiation angle, and vice versa. The smaller the antenna gain, the larger its radiation angle. This antenna is greater than 0dBi in the frequency range of 700Mhz--2700Mhz.

[0030] Antenna efficiency reflects the ratio of the antenna to the total input power. The higher the utilization rate, the less useless work, the higher the antenna efficiency. There are many factors that affect antenna efficiency, the most common ones are: antenna structure, antenna material composition, impedance matching, etc.

[0031] The most ideal antenna efficiency is 100%, at which point the antenna outputs all the energy that goes into the antenna. The antenna has an efficiency of 49.28% in the 700Mhz--2700Mhz frequency range, which is very good performance.

[0032] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any changes that adopt the design principles of the present invention and are made through non-creative labor on this basis should fall within the protection scope of the present invention.

Claims

1. A locator antenna for a container, connected to a coaxial line of the locator, characterized in that: The locator antenna is provided with a T-shaped PCB board; the PCB board is composed of a vertical board (11) and a horizontal board (12); a first microstrip (2) is printed on the right side of the vertical board (11) along the vertical direction; a first microstrip group (3) and a second microstrip (4) whose left ends are flush are provided on the left side of the horizontal board (12); a third microstrip (5) formed integrally with the second microstrip (4) is provided at the lower part of the second microstrip (4); a fourth microstrip (6) is provided at the upper part of the second microstrip (4); a fifth microstrip (7) and a second microstrip group (8) whose left ends are flush are provided on the right side of the horizontal board (12); The first microstrip group (3) comprises a sixth microstrip (31) arranged in the vertical direction and having its top flush with the top of the transverse plate (12), and a seventh microstrip (32), an eighth microstrip (33) and a ninth microstrip (34) which are connected in sequence to form a U shape and are connected to the lower end of the sixth microstrip (31); The second microstrip group (8) comprises a tenth microstrip (81) whose left side is flush with the left side of the fifth microstrip (7) and arranged in parallel with the fifth microstrip (7), and an eleventh microstrip (82) connected to the tenth microstrip (81) and flush with the top of the tenth microstrip (81); The second microstrip (4) and the fourth microstrip (6) are both connected to the coaxial line of the positioner; The sixth microstrip (31) is a square with a side length of 0.6 mm; the seventh microstrip (32) and the ninth microstrip (34) are 3 mm long and 0.6 mm wide; the eighth microstrip (33) is 1.5 mm long and 0.6 mm wide; The tenth microstrip (81) has a length of 5.5 mm and a width of 0.5 mm; the eleventh microstrip (82) has a length of 8.2 mm and a width of 2 mm.

2. A locator antenna for a container according to claim 1, characterized in that: The first microstrip (2) has a length of 5.5 mm and a width of 3 mm; the first microstrip group (3) has a length of 3.6 mm and a width of 2.1 mm; the second microstrip (4) and the fifth microstrip (7) have a length of 12.4 mm and a width of 0.6 mm; the third microstrip (5) has a length of 0.8 mm and a width of 0.3 mm; the fourth microstrip (6) is a square with a side length of 0.7 mm; the second microstrip group (8) has a length of 13.7 mm and a width of 2 mm; The spacing between the first microstrip (2) and the second microstrip (4) is 0.7 mm; the distance between the third microstrip (5) and the left side of the second microstrip (4) is 4 mm; the spacing between the first microstrip group (3) and the second microstrip (4) is 1 mm; the lateral distance between the first microstrip group (3) and the fourth microstrip (6) is 1.5 mm; the vertical distance between the first microstrip group (3) and the second microstrip (4) is 0.4 mm; the vertical distance between the second microstrip (4) and the second microstrip group (8) is 1 mm, and the lateral distance between the second microstrip (4) and the second microstrip group (8) is 0.9 mm; and the vertical distance between the fifth microstrip (7) and the second microstrip group (8) is 0.5 mm.

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