Satellite positioning patch antenna

Abstract

The utility model relates to the technical field of antennas, and discloses a satellite positioning patch antenna, comprising a substrate, the substrate is provided with a first surface and a second surface, the first surface is provided with a plurality of metal pads, the metal pads extend to form a microstrip line, and the second surface is a metal conductive surface; the edge of the metal patch is provided with a metal foot part corresponding to the metal bonding pad, and the metal foot part is correspondingly welded and connected with the metal bonding pad; and a signal feed foot part is arranged on the metal patch. According to the utility model, the miniaturization of the cavity resonance structure is realized, and the weight problem of the ceramic antenna is solved.

Description

Technical Field

[0001] This utility model relates to the field of antenna technology, and in particular to a satellite positioning patch antenna. Background Technology

[0002] Most satellite positioning antennas on the current mobile communication market are based on the cavity resonance principle. By filling the cavity structure with a polymer material with ceramic dielectric, the dielectric properties of the cavity are changed, thereby miniaturizing the cavity and maintaining the original high gain and circular polarization characteristics of the cavity antenna mode.

[0003] However, the ceramic dielectric increases the weight of the cavity structure, and the ceramic sintering process is not only expensive, but also has increasing environmental costs year by year, making it difficult to meet the demand for cost-effectiveness of antennas in the satellite communication market. Therefore, how to provide a new type of satellite positioning patch antenna is an urgent problem to be solved. Utility Model Content

[0004] This invention provides a satellite positioning patch antenna to solve the aforementioned technical problems in the prior art.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A satellite positioning patch antenna, comprising:

[0007] A substrate having a first surface and a second surface, wherein a plurality of metal pads are disposed on the first surface, the metal pads extending microstrip lines, and the second surface is a metal conductive surface.

[0008] The metal patch has metal feet on its edge that correspond to the metal pads, and the metal feet are soldered to the metal pads; and the metal patch also has signal power supply feet.

[0009] Optionally, the metal pads are located at the edge of the first surface.

[0010] Optionally, several of the metal pads are simultaneously disposed on the four diagonals and four sides of the first surface.

[0011] Optionally, the metal pads on the two opposite sides of the first surface are symmetrically arranged.

[0012] Optionally, the number of metal pads is at least eight.

[0013] Optionally, the metal foot is formed by extending from the edge of the metal patch, and the metal foot and the metal patch are integrally formed.

[0014] Optionally, the metal foot includes: a longitudinal support portion, a transverse welding portion, an arc-shaped connecting portion one, and an arc-shaped connecting portion two. The top end of the longitudinal support portion is connected to the edge of the metal patch through the arc-shaped connecting portion one, and the bottom end of the longitudinal support portion is connected to the transverse welding portion through the arc-shaped connecting portion two.

[0015] Optionally, the metal foot is L-shaped, and the opening of the L-shape faces inward toward the antenna.

[0016] Optionally, the metal patch has a slot in the middle, and the signal feed pin is connected to the edge of the slot.

[0017] Optionally, the substrate material is a low dielectric loss material, and the thickness of the substrate is 0.3 to 1 mm.

[0018] Optionally, the metal feet extend from the corners of the metal patch, and two adjacent metal feet are located on different sides of the patch.

[0019] Optionally, the metal feet extend from the corners of the metal patch, with two opposite metal feet located on the diagonal of the patch.

[0020] The technical solution provided by this utility model can include the following beneficial effects:

[0021] This invention modifies the electric field line distribution density of the cavity resonant structure by designing pads on the first surface of the substrate, thereby achieving miniaturization of the cavity resonant structure and solving the weight problem of ceramic dielectric antennas. Furthermore, the insulation treatment between the pads and the metal surface of the second surface of the substrate ensures that the direction of the electric field line distribution is perpendicular to the patch antenna, guaranteeing that the electric field lines generate a reflection effect perpendicular to the patch antenna direction, thus enhancing the antenna's radiation gain.

[0022] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0024] Figure 1 This is a schematic diagram of the structure of a satellite positioning patch antenna according to an exemplary embodiment;

[0025] Figure 2 This is a schematic diagram illustrating the distribution of metal patches and metal feet according to an exemplary embodiment. Figure 1 ;

[0026] Figure 3This is a schematic diagram illustrating the distribution of metal patches and metal feet according to an exemplary embodiment. Figure 2 .

[0027] Figure label:

[0028] 1. Substrate; 101. Metal pad; 2. Metal patch; 201. Metal foot; 2011. Longitudinal support; 2012. Lateral welding; 2013. Arc-shaped connection part one; 2014. Arc-shaped connection part two; 202. Slot; 203. Signal power supply foot. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] According to an embodiment of the present invention, a satellite positioning patch antenna is provided.

[0031] Example 1

[0032] like Figure 1 As shown, the satellite positioning patch antenna according to the embodiment of this utility model includes a substrate 1 and a metal patch 2. The substrate 1 has a first surface and a second surface. Eight metal pads 101 are provided at the edge of the first surface. The eight metal pads 101 are simultaneously provided on the four diagonals and four sides of the first surface, and the metal pads 101 on the two opposite sides of the first surface are symmetrically arranged. The metal pads 101 extend microstrip lines. The second surface is a metal conductive surface. The metal patch 2 is located above the substrate 1, and the edge of the metal patch 2 is provided with eight metal feet 201 corresponding to the metal pads 101. The metal feet 201 are welded to the metal pads 101. The middle part of the metal patch 2 has a slot 202, and the edge of the slot 202 extends to a signal feed foot 203.

[0033] Example 2

[0034] like Figure 2As shown, the satellite positioning patch antenna according to an embodiment of the present invention includes a substrate 1 and a metal patch 2. The substrate 1 has a first surface and a second surface. A metal pad 101 is provided at the edge of the first surface, and a microstrip line extends from the metal pad 101. The second surface is a conductive metal surface. The metal patch 2 is located above the substrate 1, and a metal foot 201 is provided on the metal patch 2. The metal foot 201 extends from the corner of the metal patch 2, and two adjacent metal feet 201 are located on different sides of the patch. The metal feet 201 are correspondingly soldered to the metal pad 101. The center of the metal patch 2 has a slot 202, and a signal feed foot 203 extends from the edge of the slot 202.

[0035] Example 3

[0036] like Figure 3 As shown, the satellite positioning patch antenna according to an embodiment of the present invention includes a substrate 1 and a metal patch 2. The substrate 1 has a first surface and a second surface. A metal pad 101 is provided at the edge of the first surface, and a microstrip line extends from the metal pad 101. The second surface is a conductive metal surface. The metal patch 2 is located above the substrate 1, and a metal foot 201 is provided on the metal patch 2. The metal foot 201 extends from the corner of the metal patch 2, and two opposite metal feet 201 are located on the diagonal of the patch. The metal feet 201 are correspondingly soldered to the metal pad 101. The center of the metal patch 2 has a slot 202, and a signal feed foot 203 extends from the edge of the slot 202.

[0037] In practical applications, the metal foot 201 is formed by extending from the edge of the metal patch 2, and the metal foot 201 and the metal patch 2 are integrally formed. Specifically, the metal foot 201 includes: a longitudinal support portion 2011, a transverse welding portion 2012, an arc-shaped connecting portion one 2013, and an arc-shaped connecting portion two 2014. The top end of the longitudinal support portion 2011 is connected to the edge of the metal patch 2 through the arc-shaped connecting portion one 2013, and the bottom end of the longitudinal support portion 2011 is connected to the transverse welding portion 2012 through the arc-shaped connecting portion two 2014. The metal foot 201 is L-shaped, and the opening of the L-shape faces inward toward the antenna.

[0038] In addition, in practical applications, the substrate 1 is made of a low dielectric loss material, and the thickness of the substrate 1 is 0.3 to 1 mm.

[0039] In practical use, the metal pad 101 extends the microstrip line, changing the electric field line distribution density between the patch antenna and the metal surface of the second surface of the substrate, thus reducing the resonant frequency of the cavity. Eight metal feet 2011 extend from the edge of the patch antenna and are aligned and soldered to the metal pad, forming a parallel connection with the equivalent circuit generating electric field lines between the patch antenna and the metal surface of the second surface of the substrate. This significantly reduces dielectric loss and ensures high-performance radiation efficiency of the antenna. Insulation treatment between the metal pad and the metal surface of the second surface of the substrate ensures that the direction of the electric field line distribution is perpendicular to the patch antenna, guaranteeing that the electric field lines generate a reflection effect perpendicular to the patch antenna, enhancing the antenna's radiation gain. The signal feed foot 203 excites two mutually orthogonal electric field resonant components present on the metal patch 2. Through the design of the microstrip line on the first surface of the substrate 1, a 90° phase difference can be generated between the two resonators, thereby achieving the circular polarization characteristics of the radio wave. In summary, this invention achieves miniaturization of the antenna cavity resonance while ensuring high signal gain and circular polarization characteristics, replacing the method of filling the cavity resonance structure with ceramic dielectric, thus achieving a lightweight antenna effect.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A satellite positioning patch antenna, characterized in that, include: A substrate having a first surface and a second surface, wherein a plurality of metal pads are disposed on the first surface, the metal pads extending microstrip lines, and the second surface is a metal conductive surface. The metal patch has metal feet on its edge that correspond to the metal pads, and the metal feet are soldered to the metal pads; and the metal patch also has signal power supply feet.

2. The satellite positioning patch antenna according to claim 1, characterized in that, The metal pads are located at the edge of the first surface.

3. The satellite positioning patch antenna according to claim 2, characterized in that, Several of the aforementioned metal pads are simultaneously disposed on the four diagonals and four sides of the first surface.

4. The satellite positioning patch antenna according to claim 3, characterized in that, The metal pads on the two opposite sides of the first surface are symmetrically arranged.

5. The satellite positioning patch antenna according to claim 4, characterized in that, The number of metal pads is at least 8.

6. The satellite positioning patch antenna according to claim 1, characterized in that, The metal feet extend from the corners of the metal patch, and two adjacent metal feet are located on different sides of the patch.

7. The satellite positioning patch antenna according to claim 1, characterized in that, The metal feet extend from the corners of the metal patch, with two opposite metal feet located on the diagonal of the patch.

8. The satellite positioning patch antenna according to claim 1, characterized in that, The metal foot is formed by extending from the edge of the metal patch, and the metal foot and the metal patch are integrally formed.

9. The satellite positioning patch antenna according to claim 8, characterized in that, The metal foot includes: a longitudinal support part, a transverse welding part, an arc-shaped connecting part one, and an arc-shaped connecting part two. The top end of the longitudinal support part is connected to the edge of the metal patch through the arc-shaped connecting part one, and the bottom end of the longitudinal support part is connected to the transverse welding part through the arc-shaped connecting part two.

10. The satellite positioning patch antenna according to claim 1, characterized in that, The metal patch has a slot in the middle, and the signal feed pin is connected to the edge of the slot.

Images