GPS omnidirectional chip antenna

Abstract

The utility model discloses a global positioning system (GPS) omnidirectional chip antenna. The GPS omnidirectional chip antenna comprises a stack body, the specification of the stack body is 16 * 8 * 1.7 mm, the stack body is composed of three ceramic chips, one side of the bottom surface of the bottom ceramic chip is provided with a grounding pad, the other side of the bottom surface of the bottom ceramic chip is provided with a feed pad, the bottom surface of the middle ceramic chip is provided with a first radiation unit, and the bottom surface of the middle ceramic chip is provided with a second radiation unit. The first radiation unit is respectively communicated with the feed pad through a first conductive column and a second conductive column, a second radiation unit and a third radiation unit are arranged on the bottom surface of the top ceramic chip, the second radiation unit is connected with the first radiation unit through a third conductive column, and the third radiation unit is connected with the first radiation unit through a fourth conductive column. The utility model solves the problem that the prior art is large in size and can not adapt to complex installation environments.

Description

Technical Field

[0001] The utility model relates to the technical field of navigation communication, in particular to a GPS omnidirectional chip antenna. Background Art

[0002] GPS is the abbreviation of Global Positioning System. GPS is a terminal that receives satellite signals for positioning or navigation, and antennas are necessary to receive signals. The specifications of existing ceramic antennas are generally 25*25*4mm, which is relatively large and cannot adapt to complex installation environments. Utility Model Content

[0003] The utility model aims to provide a GPS omnidirectional chip antenna which is small in size and can adapt to complex installation environments in view of the deficiencies in the prior art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model GPS omnidirectional chip antenna is:

[0005] A GPS omnidirectional chip antenna comprises a stacked body, the specification of the stacked body is 16*8*1.7mm, the stacked body is composed of three ceramic sheets, one side of the bottom surface of the bottom ceramic sheet is provided with a grounding pad, and the other side is provided with a feeding pad, the bottom surface of the middle ceramic sheet is provided with a first radiation unit, the first radiation unit is connected with the feeding pad through a first conductive column and a second conductive column respectively, the bottom surface of the top ceramic sheet is provided with a second radiation unit and a third radiation unit, the second radiation unit is connected with the first radiation unit through a third conductive column, and the third radiation unit is connected with the first radiation unit through a fourth conductive column.

[0006] Preferably, the first radiation unit includes a first horizontal conductive line and a second horizontal conductive line, the first horizontal conductive line is located at one side edge of the ceramic sheet, the second horizontal conductive line is located at the other side edge of the ceramic sheet, one end of the first horizontal conductive line is connected to the first conductive column, and the other end is connected to the third horizontal conductive line through the first longitudinal conductive line, one end of the third horizontal conductive line is connected to the first longitudinal conductive line, and the other end is connected to the fourth horizontal conductive line through the second longitudinal conductive line, one end of the second horizontal conductive line is connected to the second conductive column, and the other end is connected to the fifth horizontal conductive line through the third longitudinal conductive line, one end of the fifth horizontal conductive line is connected to the third longitudinal conductive line, and the other end is connected to the fourth horizontal conductive line through the fourth longitudinal conductive line.

[0007] Preferably, the spacing between the first and third transverse conductive lines is 1.75 mm, the spacing between the second and fifth transverse conductive lines is 1.75 mm, the distance between the second longitudinal conductive line and the wide side of the ceramic sheet is 0.7 mm, and the spacing between the second and fourth longitudinal conductive lines is 1.75 mm.

[0008] Preferably, the second radiation unit includes a sixth horizontal conductive line, one end of the sixth horizontal conductive line is connected to the third conductive column, and the other end is connected to the seventh horizontal conductive line through the fifth longitudinal conductive line, one end of the seventh horizontal conductive line is connected to the fifth longitudinal conductive line, and the other end is connected to the eighth horizontal conductive line through the sixth longitudinal conductive line.

[0009] Preferably, the spacing between the sixth and seventh transverse conductive lines is 1.5 mm, the spacing between the seventh and eighth transverse conductive lines is 1.5 mm, and the length of the eighth transverse conductive line is 10 mm.

[0010] Preferably, the third radiation unit includes a ninth transverse conductive line, one end of the ninth transverse conductive line is connected to the fourth conductive column, the other end is connected to the tenth transverse conductive line through the seventh longitudinal conductive line, and one end of the tenth transverse conductive line is connected to the seventh longitudinal conductive line.

[0011] Preferably, the interval between the ninth and tenth transverse conductive lines is 1.5 mm, and the length of the tenth transverse conductive line is 13 mm.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] A multilayer ceramic antenna structure is provided, a first radiation unit is arranged on the bottom surface of a middle ceramic sheet, and a second and a third radiation unit connected to the first radiation unit are arranged on the bottom surface of a top ceramic sheet. The size of the currently conventionally used antenna is reduced on the basis of meeting the required GPS working frequency band, so as to adapt to complex installation environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a GPS omnidirectional chip antenna;

[0015] Figure 2 It is a schematic diagram of the structure of the radiation line;

[0016] Figure 3 is a schematic structural diagram of a first radiation unit;

[0017] Figure 4 is a schematic diagram of the structure of the second and third radiation units;

[0018] Figure 5 It is the return loss diagram of the utility model;

[0019] Figure 6 It is the Smith parameter diagram of the utility model.

[0020] Among them, 1 is a stack, 11 is a first conductive column, 12 is a second conductive column, 13 is a third conductive column, 14 is a fourth conductive column, 2 is a ground pad, 3 is a feed pad, 4 is a first radiation unit, 41 is a first horizontal conductive line, 42 is a second horizontal conductive line, 43 is a first longitudinal conductive line, 44 is a third horizontal conductive line, 45 is a second longitudinal conductive line, 46 is a fourth horizontal conductive line, 47 is a third longitudinal conductive line, 48 is a fifth horizontal conductive line, 49 is a fourth longitudinal conductive line, 5 is a second radiation unit, 51 is a sixth horizontal conductive line, 52 is a fifth longitudinal conductive line, 53 is a seventh horizontal conductive line, 54 is a sixth longitudinal conductive line, 55 is an eighth horizontal conductive line, 6 is a third radiation unit, 61 is a ninth horizontal conductive line, 62 is a seventh longitudinal conductive line, and 63 is a tenth horizontal conductive line. DETAILED DESCRIPTION

[0021] The present invention is further explained below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that these implementation methods are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0022] like Figure 1-6As shown, a GPS omnidirectional chip antenna includes a stack 1, the specification of the stack is 16*8*1.7mm, the stack is composed of three ceramic sheets, a ground pad 2 is printed on the left side of the bottom surface of the bottom ceramic sheet, and a feed pad 3 is printed on the right side, and a first radiation unit 4 is printed on the bottom surface of the middle ceramic sheet. The first radiation unit includes a first transverse conductive line 41 and a second transverse conductive line 42. The first transverse conductive line is located at the front edge of the middle ceramic sheet, and the second transverse conductive line is located at the rear edge of the middle ceramic sheet. The left end of the first transverse conductive line is connected to the feed pad through the first conductive column 11, and the right end of the first transverse conductive line is connected to the third transverse conductive line 44 through the first longitudinal conductive line 43. The first and second transverse conductive lines are connected to each other through the first conductive column 11. The spacing between the three transverse conductive lines is 1.75 mm, the right end of the third transverse conductive line is connected to the first longitudinal conductive line, the left end of the third transverse conductive line is connected to the fourth transverse conductive line 46 through the second longitudinal conductive line 45, the distance between the second longitudinal conductive line and the wide side of the ceramic sheet is 0.7 mm, the left end of the second transverse conductive line is connected to the feed pad through the second conductive column 12, the right end of the second transverse conductive line is connected to the fifth transverse conductive line 48 through the third longitudinal conductive line 47, the spacing between the second and fifth transverse conductive lines is 1.75 mm, the right end of the fifth transverse conductive line is connected to the third longitudinal conductive line, and the left end of the fifth transverse conductive line is connected to the fourth transverse conductive line through the fourth longitudinal conductive line 49 The second and fourth longitudinal conductive lines are connected, the spacing between them is 1.75 mm, the second radiation unit 5 and the third radiation unit 6 are printed on the bottom surface of the top ceramic sheet, the second radiation unit includes a sixth transverse conductive line 51, the sixth transverse conductive line and the first transverse conductive line completely overlap in vertical projection, the left end of the sixth transverse conductive line is connected to the first transverse conductive line through the third conductive column 13, the first and third conductive columns are coaxial, the right end of the sixth transverse conductive line is connected to the seventh transverse conductive line 53 through the fifth longitudinal conductive line 52, the spacing between the sixth and seventh transverse conductive lines is 1.5 mm, the right end of the seventh transverse conductive line is connected to the fifth longitudinal conductive line, and the left end of the seventh transverse conductive line is connected to the fifth longitudinal conductive line through the sixth longitudinal conductive line. Line 54 is connected to the eighth horizontal conductive line 55, the spacing between the seventh and eighth horizontal conductive lines is 1.5 mm, and the length of the eighth horizontal conductive line is 10 mm. The third radiation unit includes a ninth horizontal conductive line 61, and the ninth horizontal conductive line and the second horizontal conductive line completely overlap in vertical projection. The left end of the ninth horizontal conductive line is connected to the second horizontal conductive line through the fourth conductive column 14, and the second and fourth conductive columns are coaxial. The right end of the ninth horizontal conductive line is connected to the tenth horizontal conductive line 63 through the seventh longitudinal conductive line 62. The spacing between the ninth and tenth horizontal conductive lines is 1.5 mm, the right end of the tenth horizontal conductive line is connected to the seventh longitudinal conductive line, and the length of the tenth horizontal conductive line is 13 mm.

Claims

1. A GPS omnidirectional chip antenna, characterized in that: The stacked body includes a stacked body with a specification of 16*8*1.7mm. The stacked body is composed of three ceramic sheets. A grounding pad is arranged on one side of the bottom surface of the bottom ceramic sheet, and a feeding pad is arranged on the other side. A first radiation unit is arranged on the bottom surface of the middle ceramic sheet, and the first radiation unit is connected to the feeding pad through the first conductive column and the second conductive column respectively. A second radiation unit and a third radiation unit are arranged on the bottom surface of the top ceramic sheet, and the second radiation unit is connected to the first radiation unit through the third conductive column, and the third radiation unit is connected to the first radiation unit through the fourth conductive column.

2. The GPS omnidirectional chip antenna according to claim 1, characterized in that: The first radiation unit includes a first transverse conductive line and a second transverse conductive line, the first transverse conductive line is located at one side edge of the ceramic sheet, and the second transverse conductive line is located at the other side edge of the ceramic sheet, one end of the first transverse conductive line is connected to the first conductive column, and the other end is connected to the third transverse conductive line through the first longitudinal conductive line, one end of the third transverse conductive line is connected to the first longitudinal conductive line, and the other end is connected to the fourth transverse conductive line through the second longitudinal conductive line, one end of the second transverse conductive line is connected to the second conductive column, and the other end is connected to the fifth transverse conductive line through the third longitudinal conductive line, one end of the fifth transverse conductive line is connected to the third longitudinal conductive line, and the other end is connected to the fourth transverse conductive line through the fourth longitudinal conductive line.

3. The GPS omnidirectional chip antenna according to claim 2, characterized in that: The spacing between the first and third transverse conductive lines is 1.75 mm, the spacing between the second and fifth transverse conductive lines is 1.75 mm, the distance between the second longitudinal conductive line and the wide side of the ceramic sheet is 0.7 mm, and the spacing between the second and fourth longitudinal conductive lines is 1.75 mm.

4. The GPS omnidirectional chip antenna according to claim 1, characterized in that: The second radiation unit includes a sixth horizontal conductive line, one end of the sixth horizontal conductive line is connected to the third conductive column, and the other end is connected to the seventh horizontal conductive line through the fifth longitudinal conductive line, one end of the seventh horizontal conductive line is connected to the fifth longitudinal conductive line, and the other end is connected to the eighth horizontal conductive line through the sixth longitudinal conductive line.

5. The GPS omnidirectional chip antenna according to claim 4, characterized in that: The spacing between the sixth and seventh transverse conductive lines is 1.5 mm, the spacing between the seventh and eighth transverse conductive lines is 1.5 mm, and the length of the eighth transverse conductive line is 10 mm.

6. The GPS omnidirectional chip antenna according to claim 1, characterized in that: The third radiation unit includes a ninth transverse conductive line, one end of which is connected to the fourth conductive column, and the other end of which is connected to the tenth transverse conductive line through the seventh longitudinal conductive line, and one end of which is connected to the seventh longitudinal conductive line.

7. The GPS omnidirectional chip antenna according to claim 1, characterized in that: The interval between the ninth and tenth transverse conductive lines is 1.5 mm, and the length of the tenth transverse conductive line is 13 mm.

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