TWM475029U - Flat antenna structure - Google Patents

Description

Flat antenna structure

The present invention relates to an antenna, and more particularly to a planar antenna structure having a dotted line whose frequency variation is adjusted.

It is known that the current ceramic flat panel antenna has a carrier having a radiating metal surface on the surface thereof, the back side of the carrier having a grounded metal surface, the carrier having a signal feeding end passing through the carrier and the radiation The metal surface is electrically connected. After the ceramic panel antenna is completed, the first task is to test the electrical characteristics of the ceramic panel antenna in accordance with the manufacturing specifications. Because the ceramic panel antenna is produced in the same way because of the inconsistent size of the radiation metal sheet, different electrical characteristics are produced. The finished ceramic panel antenna must be tested for electrical characteristics.

When the ceramic panel antenna is detected, the ceramic panel antenna is electrically connected to the connector of the wireless frequency (RF) component test coaxial cable for reading the electrical characteristics of the ceramic panel antenna, and the instrument simultaneously displays the electrical A Smith chart of the characteristics. After the Smith graph is displayed, the examiner will visually see whether the Smith chart displayed by the instrument is the same as the production specification. If it is different, the detector must manually correct the ceramic flat panel antenna. The radiant metal surface is corrected and corrected. The Smith chart displayed on the instrument is corrected to the same specifications as the production specification, and the trimming action is stopped.

Since the electrical characteristics of the ceramic flat panel antenna are corrected and adjusted, any one or both sides of the four sides of the radiating metal surface are cut by a laser engraving machine, which is limited by the laser setting limitation of the laser engraving machine. A finer frequency cut adjustment is performed, so that the adjustment of the frequency variation of the panel antenna is limited.

Therefore, the main purpose of this creation is to solve the part that cannot be finely adjusted in a single cutting amount. Therefore, when laser processing is used, the setting of the switching of the laser engraving machine is controlled to produce the effect of cutting the dotted line and reducing the single cutting. The amount of cut size. It can be seen from the simulation results and the experimental results that the processing method can perform small antenna frequency variation adjustment and does not have an excessive influence on the characteristics of the Smith Chart fed into the impedance.

To achieve the above objectives, the present invention provides a planar antenna structure comprising:

a carrier having a top surface thereon;

a radiating metal surface disposed on a top surface of the carrier;

Wherein, the radiation metal surface has two dotted sides, and the two dotted lines are adjusted by the frequency variation.

The carrier of the planar antenna structure is a ceramic material, and the signal feeding portion having a columnar shape is electrically connected to the radiating metal surface, and the signal feeding portion penetrates the back surface of the carrier, and the signal feeding portion is not connected to the carrier The back has a grounded metal surface that is electrically connected.

Wherein, the radiant metal surface further comprises two diagonal bevels.

Wherein, the radiating metal surface further comprises two straight sides, the two straight sides connecting one oblique side and the two broken side.

The dotted line includes a plurality of cutting segments and a plurality of solid segments connected.

Wherein, the dotted line is provided on the radiant metal surface in equal parts.

Wherein, the two dashed edges are perpendicularly connected to each other or parallel to the radiation metal surface.

Wherein, the cutting depth of the cutting segment is greater than 0.01 mm.

In order to achieve the above purposes, the present invention also provides a planar antenna structure, including:

a carrier having a top surface thereon;

a radiating metal surface disposed on a top surface of the carrier;

Wherein, the radiant metal surface has a four-dotted side, and the four dotted lines are adjusted in frequency variation.

The carrier of the planar antenna structure is a ceramic material, and the signal feeding portion having a columnar shape is electrically connected to the radiating metal surface, and the signal feeding portion penetrates the back surface of the carrier, and the signal feeding portion is not connected to the carrier The back has a grounded metal surface that is electrically connected.

Wherein, the radiant metal surface further comprises two diagonal bevels.

Wherein, the two oblique sides are connected to the four dotted lines.

The dotted line includes a plurality of cutting segments and a plurality of solid segments connected.

Wherein, the dotted line is provided on the radiant metal surface in equal parts.

Wherein, the cutting depth of the cutting segment is greater than 0.01 mm.

100~108‧‧‧Steps

1‧‧‧Tablet antenna

11‧‧‧ Carrier

12‧‧‧radiation metal surface

121‧‧‧Bevel

122‧‧‧ Straight line

122a‧‧‧dotted side

1221a‧‧‧Cutting section

1222a‧‧‧solid line

13‧‧‧Signal Feeding Department

The first figure is a schematic flow chart of the method for correcting the adjustment of the panel antenna of the present invention.

The second figure is a schematic view of the radiant metal surface of the panel antenna of the present invention.

The third figure is a schematic top view of the dotted line of the two straight sides of the radiating metal surface of the panel antenna of the present invention.

The fourth figure is a schematic top view of the dotted line of the four straight sides of the radiating metal surface of the panel antenna of the present invention.

The fifth figure is a schematic diagram of the results of the Smith curve of the trimmed side of the two straight sides of the radiating metal surface of the third figure.

The sixth figure is a schematic diagram showing the results of the Smith curve of the four-sided side of the radiant metal surface of the fourth straight line.

The technical content and detailed description of this creation are as follows:

Please refer to the first, second, third and fourth figures, which is the flow of the method for correcting and adjusting the flat antenna of the present invention, and the radiant metal surface of the panel antenna is not cut and the two straight sides of the radiating metal surface of the panel antenna and the dotted line of the four straight sides Cut the top view. As shown in the figure, the method for correcting the adjustment of the panel antenna of the present invention is as follows. First, as in step 100, a completed panel antenna 1 is provided. The panel antenna 1 has a carrier 11 having a radiating metal surface on the top surface thereof. 12. The radiant metal surface 12 has two oblique sides 121 and four straight sides 122. Further, the signal feeding portion 13 having a columnar shape on the carrier 11 is electrically connected to the radiating metal surface 12, and the signal feeding portion 13 penetrates the carrier and passes through the back surface of the carrier 11 (not shown), and It is electrically connected to a grounded metal surface (not shown) on the back surface of the carrier 11. In the present figure, the carrier 11 is a ceramic material.

Step 102: The detection device sets a parameter value of electrical characteristics (such as center frequency, bandwidth, and return loss) of the panel antenna, and the display on the detecting device displays a Smith chart and an s-parameter graph. In the figure, the detecting device (not to be described in the prior art) includes at least a micro processing unit, a storage unit, an operation interface and a display.

Step 104: Place the panel antenna 1 on a test fixture of an RF (Radio Frequency) component of the detecting device (hereinafter referred to as an RF component test fixture), so that the signal feeding end of the ceramic panel antenna and the RF The component test fixture is electrically connected. In the figure, the RF component test fixture is a radio frequency coaxial cable connector that is electrically coupled to the signal feed end of the ceramic panel antenna.

Step 106: When the panel antenna 1 needs to adjust the frequency variation, the laser engraving machine is driven by the detecting device, and the laser engraving machine is driven by the detecting device to control the opening and closing control mode to make the mine The engraving machine performs the effect of forming the dashed edge 122a on the four straight sides 122 or any two straight sides 122 of the radiating metal surface 12 of the panel antenna 1 to form the dashed edge 122a, and the equal amount is required when cutting the dashed side 122. The cutting is performed to adjust the frequency variation of the panel antenna 1 (as shown in the third and fourth figures).

Step 108: After the frequency change amount of the radiation metal surface of the panel antenna is adjusted, if the detection device detects whether the frequency change amount adjustment meets the requirements, if it is not, then return to the step 106; if the frequency change amount is adjusted If it meets the requirements, the detection and the frequency change adjustment operation of the panel antenna are terminated.

Please refer to the third and fifth figures, which are the schematic diagram of the dashed side cutting of the two straight sides of the radiating metal surface of the flat antenna of the present invention, and the Schematic curve of the trimming of the two straight sides of the radiating metal surface of the third figure. . As shown in the figure: after the panel antenna 1 of the present invention is engraved by a laser engraving machine, the panel antenna 1 has a carrier 11, and the top mask of the carrier 11 has a radiating metal surface 12, and the radiating metal surface 12 has two oblique The oblique side 121 corresponding to the diagonal corner is connected with two straight side edges 122 and two double broken side edges 122a. The two broken side edges 122a are perpendicularly connected to each other or parallel to the other two straight sides 122. The dotted side 122a The method includes a plurality of cutting segments 1221a and a plurality of solid segments 1222a connected. The cutting section 1221a is also cut of metal material by a laser engraving machine to expose the top surface of the carrier 11.

And the cutting depth (or width) D of the cutting segment 1221a will affect the frequency adjustment variation of the panel antenna 1 and the following table illustrates:

Therefore, after the above description, it is understood that the cutting depth D of the laser cutting section 122a of the broken line side 122 of the present creation is larger than 0.01 mm or more.

Please refer to the fourth and sixth figures, which are the top view of the four-line side of the radiant metal surface of the other flat antenna of the present invention, and the swarf side of the fourth line of the radiant metal surface. The result is schematic. As shown in the figure: after the panel antenna 1 of the present invention is engraved by a laser engraving machine, the panel antenna 1 has a carrier 11, and the top mask of the carrier 11 has a radiating metal surface 12, and the radiating metal surface 12 has two oblique Diagonally corresponding oblique sides 121, the two oblique sides 121 are connected to four broken side 122a, and the dotted side 122a comprises a plurality of cutting segments 1221a and a plurality of solid segments 1222a connected.

And the cutting depth (or width) D of the cutting segment 1221a will affect the frequency adjustment variation of the panel antenna 1 and the following table illustrates:

Therefore, after the above description, it is understood that the cutting depth D of the cut portion 122a of the broken line side 122 of the present creation is larger than 0.01 mm or more.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. That is, the equal changes and modifications made by the patent application scope of this creation are covered by the scope of the creation patent.

1‧‧‧Tablet antenna

11‧‧‧ Carrier

12‧‧‧radiation metal surface

121‧‧‧Bevel

122‧‧‧ Straight line

122a‧‧‧dotted side

1221a‧‧‧Cutting section

1222a‧‧‧solid line

13‧‧‧Signal Feeding Department

Claims (15)

A planar antenna structure comprising:
a carrier having a top surface thereon;
a radiating metal surface disposed on a top surface of the carrier;
Wherein, the radiation metal surface has two dotted sides, and the two dotted lines are adjusted by the frequency variation. The planar antenna structure of claim 2, wherein the carrier of the planar antenna structure is a ceramic material, and the signal feeding portion having a columnar shape on the carrier is electrically connected to the radiating metal surface, and the signal feeding The entrance portion extends through the back surface of the carrier, and the signal feeding portion is not electrically connected to the back surface of the carrier. The planar antenna structure of claim 2, wherein the radiating metal surface further comprises two diagonal bevels. The planar antenna structure of claim 3, wherein the radiating metal surface further comprises two straight sides, the two straight sides connecting one oblique side and the two broken side. The planar antenna structure of claim 4, wherein the dashed edge comprises a plurality of cutting segments and a plurality of solid segments are connected. The flat antenna structure according to claim 5, wherein the dotted line is provided on the radiating metal surface in equal parts. The planar antenna structure of claim 6, wherein the two dashed edges are perpendicularly connected to each other or parallel to the radiating metal surface. The planar antenna structure of claim 7, wherein the cutting depth of the cutting segment is greater than 0.01 mm. A planar antenna structure comprising:
a carrier having a top surface thereon;
a radiating metal surface disposed on a top surface of the carrier;
Wherein, the radiant metal surface has a four-dotted side, and the four dotted lines are adjusted in frequency variation. The planar antenna structure of claim 9, wherein the carrier of the planar antenna structure is a ceramic material, and the signal feeding portion having a columnar shape is electrically connected to the radiating metal surface, and the signal feeding The entrance portion extends through the back surface of the carrier, and the signal feeding portion is not electrically connected to the back surface of the carrier. The planar antenna structure of claim 10, wherein the radiating metal surface further comprises two diagonal bevels. The planar antenna structure of claim 11, wherein the two oblique sides connect the four dotted edges. The planar antenna structure of claim 12, wherein the dashed edge comprises a plurality of cutting segments and a plurality of solid segments connected. The flat antenna structure according to claim 13, wherein the dotted line is provided on the radiating metal surface in equal parts. The planar antenna structure of claim 14, wherein the cutting depth of the cutting segment is greater than 0.01 mm.