Lightweight patch antenna

Abstract

Disclosed is a lightweight patch antenna having a recess formed in a dielectric, an upper patch, and a lower patch to maintain antenna performance while being lightweight. The disclosed lightweight patch antenna includes a dielectric, an upper patch disposed on the dielectric in a stack, a lower patch disposed below the dielectric in the stack, and a plurality of lightweight recesses formed by removing a portion of the stack from an outside of the stack, wherein the dielectric, the upper patch, and the lower patch are stacked in the stack.

Description

Technical Field

[0001] This disclosure relates to a patch antenna, and more specifically, to a lightweight patch antenna for receiving frequency band signals such as GPS and GNSS. Background Technology

[0002] This disclosure is proposed to solve the above-mentioned conventional problems, and the purpose of this disclosure is to provide a lightweight patch antenna having grooves formed in a dielectric, an upper patch, and a lower patch to maintain antenna performance while being lightweight. Summary of the Invention

[0003] Technical issues

[0004] The purpose of this disclosure is to provide a lightweight patch antenna having grooves formed in a dielectric, an upper patch, and a lower patch to maintain antenna performance while being lightweight.

[0005] Technical solution

[0006] According to the features of this disclosure for achieving this purpose, the disclosure includes a lightweight patch antenna comprising: a dielectric having a plurality of dielectric grooves; an upper patch disposed on the dielectric and having an upper groove formed at a position overlapping with the dielectric grooves; and a lower patch disposed below the dielectric and having a lower groove formed at a position overlapping with the dielectric grooves.

[0007] According to the features of this disclosure for achieving this purpose, the disclosure includes a lightweight patch antenna comprising: a dielectric; an upper patch stacked on the dielectric; a lower patch stacked below the dielectric; and a plurality of lightweight grooves formed by removing a portion of the stack from the outer periphery of the stack, wherein the dielectric, the upper patch, and the lower patch are stacked in the stack. In this case, the lightweight grooves can be formed from the outer periphery of the stack toward the center point of the stack.

[0008] Beneficial effects

[0009] According to this disclosure, a lightweight patch antenna has lightweight grooves in the form of a portion of the antenna being removed by stacking a dielectric, an upper patch, and a lower patch on which multiple grooves are formed. This achieves the same antenna performance as a conventional patch antenna while reducing weight compared to a conventional patch antenna.

[0010] Furthermore, compared to conventional patch antennas, lightweight patch antennas achieve a weight reduction of approximately 20% to 30% by forming four opposing lightweight grooves with the center point located between the four opposing lightweight grooves. Attached Figure Description

[0011] Figure 1 This is a schematic diagram illustrating the construction of a lightweight patch antenna according to an embodiment of the present disclosure;

[0012] Figure 2 It is used for explanation Figure 1 A schematic diagram of the dielectric;

[0013] Figure 3 It is used for explanation Figure 1 A schematic diagram of the patch;

[0014] Figure 4 It is used for explanation Figure 1 A schematic diagram of the lower patch;

[0015] Figure 5 This is a schematic diagram illustrating the structure for reducing the weight of a lightweight patch antenna according to an embodiment of the present disclosure;

[0016] Figure 6 and Figure 7 It is used for explanation Figure 5 A schematic diagram of a lightweight groove;

[0017] Figures 8 to 17 This is a schematic diagram illustrating another structure for reducing the weight of a lightweight patch antenna according to an embodiment of the present disclosure;

[0018] Figure 18 This is a schematic diagram used to illustrate and compare the antenna performance of a lightweight patch antenna according to an embodiment of the present disclosure with that of a conventional patch antenna. Detailed Implementation

[0019] In the following description, in order to enable those skilled in the art to readily practice the technical concepts of this disclosure, the most preferred embodiments of this disclosure will be described with reference to the accompanying drawings. First, it should be noted that when labeling components in each drawing, the same components will be represented by the same reference numerals, even if these components are shown in different drawings. Furthermore, in describing exemplary embodiments of this disclosure, well-known functions or structures will not be described in detail because they may unnecessarily obscure the understanding of this disclosure.

[0020] Reference Figure 1 The lightweight patch antenna according to an embodiment of the present disclosure is configured to include a dielectric (100), an upper patch (200) on the dielectric (100) and a lower patch (300) disposed below the dielectric (100).

[0021] The dielectric (100) is composed of a dielectric material (100) having a dielectric constant or a magnetic material. The dielectric (100) may be composed of a dielectric (100) substrate, which is made of ceramic having properties such as a high dielectric constant and a low coefficient of thermal expansion. The dielectric (100) may be composed of a magnetic material substrate, which is made of a magnetic material such as ferrite.

[0022] Reference Figure 2 The dielectric (100) includes a first feed hole (420), a first dielectric groove (120), a second dielectric groove (140), a third dielectric groove (160), and a fourth dielectric groove (180).

[0023] The first feed hole (420) is formed to penetrate the dielectric (100). The first feed hole (420) is formed to penetrate the dielectric (100) at a position spaced at a predetermined distance from the center point of the dielectric (100).

[0024] The first dielectric groove (120) is formed by removing a portion of the dielectric (100). The first dielectric groove (120) has a shape that is recessed from a first side of the dielectric (100) toward the interior of the dielectric (100) (or toward the center point).

[0025] The second dielectric groove (140) is formed by removing a portion of the dielectric (100). The second dielectric groove (140) has a shape that is recessed from a second side of the dielectric (100) toward the interior of the dielectric (100) (or toward the center point). In this case, the second side is opposite to the first side of the dielectric (100), wherein the center point of the dielectric (100) is located between the second side and the first side, and the second dielectric groove (140) is arranged opposite to the first dielectric groove (120), wherein the center point of the dielectric (100) is located between the second dielectric groove and the first dielectric groove.

[0026] The third dielectric groove (160) is formed by removing a portion of the dielectric (100). The third dielectric groove (160) has a shape that is recessed from the first side of the dielectric (100) toward the interior of the dielectric (100) (or toward the center point).

[0027] The fourth dielectric groove (180) is formed by removing a portion of the dielectric (100). The fourth dielectric groove (180) has a shape that is recessed from the fourth side of the dielectric (100) toward the interior of the dielectric (100) (or toward the center point). In this case, the fourth side is opposite to the third side of the dielectric (100), wherein the center point of the dielectric (100) is located between the fourth side and the third side, and the fourth dielectric groove (180) is arranged opposite to the third dielectric groove (160), wherein the center point of the dielectric (100) is located between the fourth dielectric groove and the third dielectric groove.

[0028] The upper patch (200) is disposed on the dielectric (100). The upper patch (200) is made of a thin plate, which is made of a conductive material with high conductivity (e.g., copper, aluminum, gold or silver).

[0029] The lightweight patch antenna includes a feed hole (400) formed to penetrate a dielectric (100), an upper patch (200), and a lower patch (300). A feed pin (not shown) for feeding the upper patch (200) is inserted into the feed hole (400). The upper patch (200) is fed through the feed pin (not shown), and the upper patch serves as a radiator for receiving GPS signals, GLONASS signals, etc.

[0030] Meanwhile, when the lightweight patch antenna has a structure that does not form a feed hole (400), the upper patch (200) can be fed by electromagnetic coupling with a feed point (not shown) arranged below the dielectric (100), and the upper patch can be used as a radiator.

[0031] Reference Figure 3 The upper patch (200) includes a second power feed hole (440), a first upper groove (220), a second upper groove (240), a third upper groove (260), and a fourth upper groove (280).

[0032] The second power supply hole (440) is formed to penetrate the upper patch (200). The second power supply hole (440) is formed to penetrate the upper patch (200) at a position spaced at a predetermined distance from the center point of the upper patch (200).

[0033] The first upper groove (220) is formed by removing a portion of the upper patch (200). The first upper groove (220) has a shape that is recessed from a first side of the upper patch (200) toward the interior of the upper patch (200) (or toward the center point).

[0034] The second upper groove (240) is formed by removing a portion of the upper patch (200). The second upper groove (240) has a shape that is recessed from a second side of the upper patch (200) toward the interior of the upper patch (200) (or toward the center point). In this case, the second side is opposite to the first side of the upper patch (200), wherein the center point of the upper patch (200) is located between the second side and the first side, and the second upper groove (240) is arranged opposite to the first upper groove (220), wherein the center point of the upper patch (200) is located between the second upper groove and the first upper groove.

[0035] The third upper groove (260) is formed by removing a portion of the upper patch (200). The third upper groove (260) has a shape that is recessed from the first side of the upper patch (200) toward the interior of the upper patch (200) (or toward the center point).

[0036] The fourth upper groove (280) is formed by removing a portion of the upper patch (200). The fourth upper groove (280) has a shape that is recessed from the fourth side of the upper patch (200) toward the interior of the upper patch (200) (or toward the center point). In this case, the fourth side is opposite to the third side of the upper patch (200), wherein the center point of the upper patch (200) is located between the fourth side and the third side, and the fourth upper groove (280) is arranged opposite to the third upper groove (260), wherein the center point of the upper patch (200) is located between the fourth upper groove and the third upper groove.

[0037] The lower patch (300) is disposed below the dielectric (100). That is, the lower patch (300) is made of a thin plate, which is made of a conductive material with high conductivity (e.g., copper, aluminum, gold, or silver). The lower patch (300) is formed to have an area smaller than the area of ​​the lower surface of the dielectric (100), but to have an area larger than the area of ​​the upper patch (200). In this case, because it is necessary to fix a specific area or more areas to form a grounding part, the lower patch (300) can be formed on the entire lower surface of the dielectric (100).

[0038] Reference Figure 4 The lower patch (300) includes a third power supply hole (460), a first lower groove (320), a second lower groove (340), a third lower groove (360), and a fourth lower groove (380).

[0039] The third power supply hole (460) is formed to penetrate the lower patch (300). The third power supply hole (460) is formed to penetrate the lower patch (300) at a position spaced at a predetermined distance from the center point of the lower patch (300).

[0040] The first lower groove (320) is formed by removing a portion of the lower patch (300). The first lower groove (320) has a shape that is recessed from a first side of the lower patch (300) toward the interior of the lower patch (300) (or toward the center point).

[0041] The second lower groove (340) is formed by removing a portion of the lower patch (300). The second lower groove (340) has a shape that is recessed from a second side of the lower patch (300) toward the interior of the lower patch (300) (or toward the center point). In this case, the second side is opposite to the first side of the lower patch (300), wherein the center point of the lower patch (300) is located between the second side and the first side, and the second lower groove (340) is arranged opposite to the first lower groove (320), wherein the center point of the lower patch (300) is located between the second lower groove and the first lower groove.

[0042] The third lower groove (360) is formed by removing a portion of the lower patch (300). The third lower groove (360) has a shape that is recessed from the first side of the lower patch (300) toward the interior of the lower patch (300) (or toward the center point).

[0043] The fourth lower groove (380) is formed by removing a portion of the lower patch (300). The fourth lower groove (380) has a shape that is recessed from the fourth side of the lower patch (300) toward the interior of the lower patch (300) (or toward the center point). In this case, the fourth side is opposite to the third side of the lower patch (300), wherein the center point of the lower patch (300) is located between the fourth side and the third side, and the fourth lower groove (380) is arranged opposite to the third lower groove (360), wherein the center point of the lower patch (300) is located between the fourth lower groove and the third lower groove.

[0044] Here, when the dielectric (100), the upper patch (200) and the lower patch (300) are stacked, the first feed hole (420), the second feed hole (440) and the third feed hole (460) overlap each other to form a feed hole (400) that is penetrated by the feed pin.

[0045] Reference Figure 5 When the dielectric (100), the upper patch (200) and the lower patch (300) are stacked, the lightweight patch antenna includes a first lightweight recess (520), a second lightweight recess (540), a third lightweight recess and a fourth lightweight recess.

[0046] The first lightweight recess (520) is formed by removing a portion of the lightweight patch antenna. In this case, when the dielectric (100), the upper patch (200), and the lower patch (300) are stacked, the first dielectric recess (120), the first upper recess (220), and the first lower recess (320) overlap to form the first lightweight recess (520). The first lightweight recess (520) has a shape that is recessed from a first side of the lightweight patch antenna toward the interior of the lightweight patch antenna (or toward the center point).

[0047] The second lightweight recess (540) is formed by removing a portion of the lightweight patch antenna. In this case, when the dielectric (100), the upper patch (200), and the lower patch (300) are stacked, the second dielectric recess (140), the second upper recess (240), and the second lower recess (340) overlap to form the second lightweight recess (540). The second lightweight recess (540) has a shape that is recessed from the second side of the lightweight patch antenna toward the interior of the lightweight patch antenna (or toward the center point).

[0048] Since the second side is the side opposite to the first side, and the center point of the lightweight patch antenna is located between the second side and the first side, the first lightweight groove (520) and the second lightweight groove (540) are arranged opposite to each other, and the center point of the lightweight patch antenna is located between the first lightweight groove and the second lightweight groove.

[0049] The third lightweight recess (560) is formed by removing a portion of the lightweight patch antenna. In this case, when the dielectric (100), the upper patch (200), and the lower patch (300) are stacked, the third dielectric recess (160), the third upper recess (260), and the third lower recess (360) overlap to form the third lightweight recess (560). The third lightweight recess (560) has a shape that is recessed from the third side of the lightweight patch antenna toward the interior of the lightweight patch antenna (or toward the center point).

[0050] The fourth lightweight recess is formed by removing a portion of the lightweight patch antenna. In this case, when the dielectric (100), the upper patch (200), and the lower patch (300) are stacked, the fourth dielectric recess (180), the fourth upper recess (280), and the fourth lower recess (380) overlap to form the fourth dielectric recess. The fourth lightweight recess has a shape that is recessed from the fourth side of the lightweight patch antenna toward the interior of the lightweight patch antenna (or toward the center point).

[0051] Since the fourth side is the side opposite to the third side, and the center point of the lightweight patch antenna is located between the fourth side and the third side, the third lightweight groove (560) and the fourth lightweight groove (540) are arranged opposite to each other, and the center point of the lightweight patch antenna is located between the third lightweight groove and the fourth lightweight groove.

[0052] Reference Figure 6 The length of one side portion of the dielectric (100) and the length of the major axis (LS) of the lightweight groove are formed to have a ratio of approximately 25:8, and the length of one side portion of the dielectric (100) and the length of the minor axis (SS) of the lightweight groove are formed to have a ratio of approximately 5:1. Therefore, the lightweight groove is formed to have a ratio of approximately 8:5 between the major axis (LS) and the minor axis (SS). In this case, the ratio of the length of the dielectric (100) to the length of the lightweight groove refers to the ratio between the length of the side portion (S1) parallel to the major axis (LS) of the lightweight groove among the plurality of sides constituting the dielectric (100), and also refers to the ratio between the length of the side portion (S2) parallel to the minor axis (SS) of the lightweight groove among the plurality of sides constituting the dielectric (100), and the length of the minor axis of the lightweight groove.

[0053] As an example, refer to Figure 7 When the horizontal and vertical lengths of the dielectric (100) are approximately 25 mm, the long axis (LS) of the first lightweight groove (520) has a length of approximately 8 mm, and the short axis (SS) of the first lightweight groove (520) has a length of approximately 5 mm.

[0054] Thus, the lightweight patch antenna includes a first lightweight recess (520) to a fourth lightweight recess, and the lightweight patch antenna is provided in the form of a portion of the patch antenna being removed by stacking a dielectric (100), an upper patch (200) and a lower patch (300), wherein the recess is formed to reduce the weight by about 20% to 30% compared to a conventional patch antenna.

[0055] An example of forming four lightweight grooves on a lightweight patch antenna to achieve lightweight has been described above, but this disclosure is not limited thereto, and the lightweight patch antenna can be configured to include a pair of lightweight grooves arranged opposite each other, wherein the center point of the lightweight patch antenna is located between the pair of lightweight grooves.

[0056] As an example, refer to Figure 8 and Figure 9 The lightweight patch antenna (540) includes a first lightweight recess (520) and a second lightweight recess (540).

[0057] The first lightweight recess (520) is formed by removing a portion of the lightweight patch antenna. In this case, when the dielectric (100), the upper patch (200), and the lower patch (300) are stacked, the first dielectric recess (120), the first upper recess (220), and the first lower recess (320) overlap to form the first lightweight recess (520). The first lightweight recess (520) has a shape that is recessed from a first side of the lightweight patch antenna toward the interior of the lightweight patch antenna (or toward the center point).

[0058] The second lightweight recess (540) is formed by removing a portion of the lightweight patch antenna. In this case, when the dielectric (100), the upper patch (200), and the lower patch (300) are stacked, the second dielectric recess (140), the second upper recess (240), and the second lower recess (340) overlap to form the second lightweight recess (540). The second lightweight recess (540) has a shape that is recessed from the second side of the lightweight patch antenna toward the interior of the lightweight patch antenna (or toward the center point).

[0059] Since the second side is the side opposite to the first side, and the center point of the lightweight patch antenna is located between the second side and the first side, the first lightweight groove (520) and the second lightweight groove (540) are arranged opposite to each other, and the center point of the lightweight patch antenna is located between the first lightweight groove and the second lightweight groove.

[0060] Here, in Figure 8 and Figure 9 The lightweight patch antenna having a first lightweight groove (520) and a second lightweight groove (540) has been described by way of example, but this disclosure is not limited thereto, and the lightweight patch antenna may include a third lightweight groove (560) and a fourth lightweight groove.

[0061] The lightweight patch antenna can be configured to include three lightweight recesses, including a pair of lightweight recesses arranged opposite each other and another lightweight recess, wherein the center point of the lightweight patch antenna is located between the pair of lightweight recesses.

[0062] As an example, refer to Figure 10 and Figure 11 The lightweight patch antenna includes a first lightweight recess (520), a second lightweight recess (540), and a third lightweight recess (560).

[0063] The first lightweight recess (520) is formed by removing a portion of the lightweight patch antenna. In this case, when the dielectric (100), the upper patch (200), and the lower patch (300) are stacked, the first dielectric recess (120), the first upper recess (220), and the first lower recess (320) overlap to form the first lightweight recess (520). The first lightweight recess (520) has a shape that is recessed from a first side of the lightweight patch antenna toward the interior of the lightweight patch antenna (or toward the center point).

[0064] The second lightweight recess (540) is formed by removing a portion of the lightweight patch antenna. In this case, when the dielectric (100), the upper patch (200), and the lower patch (300) are stacked, the second dielectric recess (140), the second upper recess (240), and the second lower recess (340) overlap to form the second lightweight recess (540). The second lightweight recess (540) has a shape that is recessed from the second side of the lightweight patch antenna toward the interior of the lightweight patch antenna (or toward the center point).

[0065] Since the second side is the side opposite to the first side, and the center point of the lightweight patch antenna is located between the second side and the first side, the first lightweight groove (520) and the second lightweight groove (540) are arranged opposite to each other, and the center point of the lightweight patch antenna is located between the first lightweight groove and the second lightweight groove.

[0066] The third lightweight recess (560) is formed by removing a portion of the lightweight patch antenna. In this case, when the dielectric (100), the upper patch (200), and the lower patch (300) are stacked, the third dielectric recess (160), the third upper recess (260), and the third lower recess (360) overlap to form the third lightweight recess (560). The third lightweight recess (560) has a shape that is recessed from the third side of the lightweight patch antenna toward the interior of the lightweight patch antenna (or toward the center point).

[0067] Here, in Figure 10 and Figure 11 The present disclosure has described by way of example a lightweight patch antenna having a first lightweight groove (520), a second lightweight groove (540) and a third lightweight groove (560), but the present disclosure is not limited thereto, and the lightweight patch antenna may include the first lightweight groove (520), the second lightweight groove (540) and the fourth lightweight groove, including the first lightweight groove (520), the third lightweight groove (560) and the fourth lightweight groove, or including the second lightweight groove (540), the third lightweight groove (560) and the fourth lightweight groove.

[0068] Therefore, the lightweight patch antenna according to an embodiment of the present disclosure includes a pair of lightweight grooves arranged opposite each other, wherein the center point is located in the pair of lightweight grooves, and the lightweight grooves can be additionally formed according to the weight required by the mounted device.

[0069] Lightweight patch antennas can have lightweight recesses of various shapes. In this case, the lightweight recesses can be formed into various shapes, such as rounded rectangles, circles, and ellipses. Here, the shape of the lightweight recess is the shape when the lightweight patch antenna is viewed from the top (or bottom).

[0070] As an example, refer to Figure 12 and Figure 13 The lightweight patch antenna can be formed with a lightweight groove in the shape of a rounded rectangle. The dielectric (100) groove, the upper groove, and the lower groove are formed into a rectangular shape with four vertices. In this case, the dielectric (100) groove, the upper groove, and the lower groove are formed into a rounded rectangle shape, wherein two vertices are arranged in the direction of the center point of the lightweight patch antenna formed into an arc. When the dielectric (100), the upper patch (200), and the lower patch (300) are stacked to form a lightweight patch antenna, the first lightweight groove (520) to the fourth lightweight groove are formed into a rounded rectangle shape.

[0071] As another example, see Figure 14 and Figure 15 The lightweight patch antenna may include elliptical (circular) lightweight recesses. The dielectric (100) recess, the upper recess, and the lower recess are formed into a semi-elliptical (semi-circular) shape, which is approximately half the size of an elliptical (circular) shape. When the dielectric (100), the upper patch (200), and the lower patch (300) are stacked to form the lightweight patch antenna, the first lightweight recess (520) to the fourth lightweight recess are formed into a semi-elliptical or semi-circular shape.

[0072] The corners of a lightweight patch antenna can be formed with lightweight grooves. For example, refer to... Figure 16 and Figure 17 The first dielectric groove (120) is formed by partially removing the corners of the first and fourth sides of the dielectric (100), the second dielectric groove (140) is formed by partially removing the corners of the second and third sides, the third dielectric groove (160) is formed by partially removing the corners of the first and second sides of the dielectric (100), and the fourth dielectric groove (180) is formed by partially removing the corners of the third and fourth sides of the dielectric (100).

[0073] The first upper groove (220) is formed by partially removing the corners of the first and fourth sides of the upper patch (200). The second upper groove (240) is formed by partially removing the corners of the second and third sides of the upper patch (200). The third upper groove (260) is formed by partially removing the corners of the first and second sides of the upper patch (200). The fourth upper groove (280) is formed by partially removing the corners of the third and fourth sides of the upper patch (200).

[0074] The first lower groove (320) is formed by partially removing the corners of the first and fourth sides of the lower patch (300). The second lower groove (340) is formed by partially removing the corners of the second and third sides of the lower patch (300). The third lower groove (360) is formed by partially removing the corners of the first and second sides of the lower patch (300). The fourth lower groove (380) is formed by partially removing the corners of the third and fourth sides of the lower patch (300).

[0075] When the dielectric (100), the upper patch (200) and the lower patch (300) are stacked to form a lightweight patch antenna, the lightweight patch antenna has four corners that are partially removed to form a plus sign shape.

[0076] In this case, assume that the lightweight patch antenna has a first side corresponding to the first side of the dielectric (100), the first side of the upper patch (200), and the first side of the lower patch (300), a second side corresponding to the second side of the dielectric (100), the second side of the upper patch (200), and the second side of the lower patch (300), a third side corresponding to the third side of the dielectric (100), the third side of the upper patch (200), and the third side of the lower patch (300), and a fourth side corresponding to the fourth side of the dielectric (100), the fourth side of the upper patch (200), and the fourth side of the lower patch (300).

[0077] In this configuration, the first lightweight recess (520) is formed by partially removing the corners of the first and fourth sides of the lightweight patch antenna, the second lightweight recess (540) is formed by partially removing the corners of the second and third sides of the lightweight patch antenna, the third lightweight recess (560) is formed by partially removing the corners of the first and second sides of the lightweight patch antenna, and the fourth lightweight recess is formed by partially removing the corners of the third and fourth sides of the lightweight patch antenna.

[0078] Correspondingly, the first lightweight groove (520) and the second lightweight groove (540) are arranged opposite to each other, wherein the center point of the lightweight patch antenna is located between the first lightweight groove and the second lightweight groove, and the third lightweight groove (560) and the fourth lightweight groove (540) are arranged opposite to each other, wherein the center point of the lightweight patch antenna is located between the third lightweight groove and the fourth lightweight groove.

[0079] Thus, the lightweight patch antenna includes a first lightweight recess (520) to a fourth lightweight recess, and the lightweight patch antenna is provided in the form of a portion of the patch antenna being removed by stacking a dielectric (100), an upper patch (200) and a lower patch (300), wherein the recess is formed to reduce the weight by about 20% to 30% compared to a conventional patch antenna.

[0080] Figure 18 Data obtained by measuring the return loss and peak gain (Gain Zenith) of a conventional patch antenna without a lightweight notch and a lightweight patch antenna according to an embodiment of this disclosure are shown. In this case, Figure 18 The return loss and peak gain shown are averages of multiple repeated measurements at 1575MHz and 1602MHz, which are the main frequency bands for GPS and GNSS.

[0081] Regarding return loss, the lightweight patch antenna is approximately 0.16 dB lower than the conventional patch antenna in the 1575 MHz band and approximately 1.56 dB lower in the 1602 MHz band. Typically, when the return loss exceeds 10 dB, further increases in this value have little impact on antenna performance. Therefore, it can be seen that the lightweight patch antenna exhibits return loss characteristics at the same level as the conventional patch antenna.

[0082] In terms of peak gain, the lightweight patch antenna is approximately 1.08 dBic lower than the conventional patch antenna in the 1575 MHz band and approximately 1.12 dBic lower in the 1602 MHz band. Typically, when the peak gain is -3 dBic or greater, the lightweight patch antenna can be used as a GPS or GNSS satellite antenna. Therefore, it can be seen that the lightweight patch antenna has a slightly lower peak gain than the conventional patch antenna, but it is sufficient for use as a satellite antenna.

[0083] Although preferred embodiments according to this disclosure have been described above, modifications can be made in various forms, and it should be understood that those skilled in the art can make various modifications and changes without departing from the scope of the claims of this disclosure.

Claims

1. A lightweight patch antenna, comprising: A dielectric material having a plurality of dielectric grooves; An upper patch is disposed on the dielectric and has an upper groove formed at a position overlapping the groove of the dielectric. as well as A lower patch, wherein the lower patch is disposed below the dielectric and has a lower groove formed at a position overlapping the groove of the dielectric. The lightweight grooves are formed by removing a portion of the stack from the outer periphery of the stack, wherein the dielectric, the upper patch, and the lower patch are stacked in the stack, and wherein the lightweight grooves are formed by overlapping the dielectric groove, the upper groove, and the lower groove, wherein the lightweight grooves are formed from the outer periphery of the stack toward the center point of the stack.

2. The lightweight patch antenna according to claim 1, wherein, The dielectric includes: A first dielectric groove, the first dielectric groove being formed on a first side of the dielectric; and A second dielectric groove is formed on a second side of the dielectric and is arranged opposite to the first dielectric groove, wherein the center point of the dielectric is located between the second dielectric groove and the first dielectric groove.

3. The lightweight patch antenna according to claim 2, wherein, The dielectric also includes a third dielectric groove formed on a third side of the dielectric.

4. The lightweight patch antenna according to claim 3, wherein, The dielectric further includes a fourth dielectric groove formed on a fourth side of the dielectric and arranged opposite to the third dielectric groove, wherein the center point of the dielectric is located between the fourth dielectric groove and the third dielectric groove.

5. The lightweight patch antenna according to claim 1, wherein, The upper patch includes: A first upper groove, the first upper groove being formed on a first side of the upper patch and overlapping with a first dielectric groove formed in the dielectric; and The second upper groove is formed on the second side of the upper patch and is arranged opposite to the first upper groove, wherein the center point of the upper patch is located between the second upper groove and the first upper groove, and the second upper groove overlaps with the second dielectric groove formed in the dielectric.

6. The lightweight patch antenna according to claim 5, wherein, The upper patch also includes a third upper groove, which is formed on a third side of the upper patch and overlaps with a third dielectric groove formed in the dielectric.

7. The lightweight patch antenna according to claim 6, wherein, The upper patch further includes a fourth upper groove formed on a fourth side of the upper patch and arranged opposite to the third upper groove, wherein the center point of the upper patch is located between the fourth upper groove and the third upper groove, and the fourth upper groove overlaps with a fourth dielectric groove formed in the dielectric.

8. The lightweight patch antenna according to claim 1, wherein, The lower patch includes: A first lower groove is formed on a first side of the lower patch and overlaps with a first dielectric groove formed in the dielectric; and A second lower groove is formed on the second side of the lower patch and is arranged opposite to the first lower groove, wherein the center point of the lower patch is located between the second lower groove and the first lower groove, and the second lower groove overlaps with a second dielectric groove formed in the dielectric.

9. The lightweight patch antenna according to claim 8, wherein, The lower patch also includes a third lower groove, which is formed on the third side of the lower patch and overlaps with a third dielectric groove formed in the dielectric.

10. The lightweight patch antenna according to claim 9, wherein, The lower patch further includes a fourth lower groove formed on a fourth side of the lower patch and arranged opposite to a third lower groove, wherein the center point of the lower patch is located between the fourth lower groove and the third lower groove, and the fourth lower groove overlaps with a fourth dielectric groove formed in the dielectric.

11. The lightweight patch antenna according to claim 1, further comprising: A first lightweight groove is formed on a first side of the stacked portion; as well as The second lightweight groove is formed on the second side of the stack opposite to the first side and is arranged opposite to the first lightweight groove.

12. The lightweight patch antenna according to claim 11, further comprising: A third lightweight groove is formed on the third side of the stack, and the two ends of the third side of the stack are respectively connected to the first end of the first side and the first end of the second side.

13. The lightweight patch antenna according to claim 12, further comprising: A fourth lightweight groove is formed on the fourth side of the stack opposite to the third side and is arranged opposite to the third lightweight groove.

14. The lightweight patch antenna according to claim 1, wherein, The ratio of the major axis length to the minor axis length of the lightweight groove is 8:

5.

15. The lightweight patch antenna according to claim 1, wherein, The ratio of the length of the side of the stacked portion parallel to the long axis of the lightweight groove to the length of the long axis of the lightweight groove is 25:8, and the ratio of the length of the side of the stacked portion parallel to the short axis of the lightweight groove to the length of the short axis of the lightweight groove is 5:1.

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