Antenna structure with periodic pattern

Abstract

The utility model discloses an antenna structure with periodic patterns. The antenna structure at least comprises a chip antenna. The chip antenna comprises a carrier, a first radiation unit, a second radiation unit and a conductor. The first radiation unit adopts the repeated design of two or more periodic pattern layers, so that the bandwidth of the chip antenna is increased, the frequency point of the chip antenna is reduced, and the efficiency of the antenna is improved. A first radiation unit is arranged on the top surface of a carrier to control high-frequency band impedance, resonant frequency and radiation effect, and two or more periodic pattern layers are utilized to generate frequency multiplication of a low-frequency band and control frequency deviation of the high-frequency band. And the second radiation unit on the bottom surface is used for controlling a low-frequency band to achieve preset target impedance, resonant frequency, bandwidth and radiation effect, so that the size of the antenna can be effectively reduced.

Description

Technical Field

[0001] The present application relates to an antenna, and more particularly to a multi-band antenna structure with a periodic pattern. Background Art

[0002] Current 3C electronic products, including desktop computers, notebook computers, video game consoles, tablet computers, and smartphones, are being designed to be thinner and lighter, making them easier for users to carry around. As these products become thinner and shorter, the antennas installed within them, which transmit and receive wireless communication signals, must also be reduced in size or have their structures modified to accommodate internal placement.

[0003] A common multi-band, single-feed chip antenna currently on the market. During production, ceramic material is first formed into a square shape, and a radiation pattern layer for signal transmission or reception is formed on the surface of the square shape through etching technology. After the chip antenna is electrically connected to the antenna substrate and installed in a 3C electronic product, it can transmit wireless signals.

[0004] While the radiating pattern layer on the chip antenna's surface can transmit wireless communication signals, the radiating pattern lacks a periodic pattern. Consequently, the chip antenna's bandwidth cannot be increased or its frequency reduced, hindering its performance. Furthermore, the chip antenna and its substrate cannot be reduced in size to fit in thin, compact, and lightweight consumer electronics.

[0005] Therefore, how to solve the problem of the radiation line design on the surface of the traditional chip antenna so that the chip antenna can increase the antenna bandwidth and reduce the antenna frequency to improve the antenna efficiency is the problem to be solved by this application. Utility Model Content

[0006] The main purpose of this application is to solve the traditional shortcomings. This application uses two to multiple periodic pattern layers to repeatedly design the radiation lines on the surface of the chip antenna to increase the bandwidth of the chip antenna and reduce the frequency of the chip antenna, thereby improving the performance of the antenna.

[0007] Another purpose of the present application is to arrange the radiation units of the high-frequency band and the low-frequency band on the top and bottom surfaces of the carrier respectively, and use the radiation units on the top surface to control the impedance, resonant frequency and radiation effect of the high-frequency band, and use two to more periodic pattern layers to generate frequency doubling of the low-frequency band and control the frequency offset of the high-frequency band, and then use the radiation units on the bottom surface to control the low-frequency band to achieve the predetermined target impedance, resonant frequency, bandwidth and radiation effect, which can effectively reduce the size of the antenna.

[0008] To achieve the above-mentioned purpose, the present application provides an antenna structure with a periodic pattern, which at least includes a chip antenna. The chip antenna includes: a carrier, a first radiation unit, a second radiation unit and a conductor. The carrier is a square body, having a top surface and a bottom surface. The first radiation unit is arranged on the top surface, and the first radiation unit includes: two upper radiation layers, at least two periodic pattern layers and a side radiation layer; the two upper radiation layers are respectively arranged at the two ends of the top surface of the carrier, and the two upper radiation layers are electrically connected to the two symmetrical periodic pattern layers, and the two periodic pattern layers are arranged on the top surface in a coupling relationship; in addition, a side radiation layer is electrically connected on one side between the two upper radiation layers and the two periodic pattern layers. The second radiation unit is arranged on the bottom surface, and the second radiation unit includes: a first lower radiation layer and a second lower radiation layer. The conductor is arranged inside the carrier and passes through the carrier. One end of the conductor is electrically connected to the two upper radiation layers, and the other end is electrically connected to the first lower radiation layer and the second lower radiation layer.

[0009] In one embodiment of the present application, the single periodic pattern layer includes: a first radiation line, a second radiation line, and a third radiation line.

[0010] In one embodiment of the present application, the first radiating line and the second radiating line are both S-shaped, and are disposed on the top surface of the carrier in parallel with each other.

[0011] In one embodiment of the present application, the third radiating line is U-shaped, and the upper U-shaped portion is located between the first radiating line and the second radiating line. A left line segment and a right line segment in the shape of a straight line extend from the left and right sides of the U-shaped portion respectively. The left line segment and the right line segment are electrically connected to the S-shaped bend of the first radiating line and the S-shaped bend of the second radiating line in a perpendicular relationship and are arranged on the top surface of the carrier.

[0012] In one embodiment of the present application, the side radiation layer is a continuous square wave pattern.

[0013] In one embodiment of the present application, an area of ​​the second lower radiation layer is greater than an area of ​​the first lower radiation layer.

[0014] In one embodiment of the present application, the conductor is composed of a plurality of conductive pillars, which are buried in and penetrate the carrier, with one end of each conductive pillar being electrically connected to the two upper radiation layers, and the other end of each conductive pillar being electrically connected to the first lower radiation layer and the second lower radiation layer.

[0015] In one embodiment of the present application, the carrier is made of glass fiber or ceramic material.

[0016] In one embodiment of the present application, the chip antenna is electrically connected to an antenna substrate having a clearance area, the front of the antenna substrate has a first ground layer and a bare portion, the bare portion has an electrode end and a signal feed line, and the first lower radiation layer and the second lower radiation layer of the second radiation unit are electrically connected to the electrode end and one end of the signal feed line respectively.

[0017] In one embodiment of the present application, the signal feeding line includes a first signal feeding line, a second signal feeding line, and a first distance between the first signal feeding line and the second signal feeding line, and a second distance between the first signal feeding line and the first ground layer.

[0018] In one embodiment of the present application, a matching component is electrically connected between the first distance and the second distance to perform impedance and frequency adjustment.

[0019] In one embodiment of the present application, the back surface of the antenna substrate has a second ground layer and the clearance area. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional schematic diagram of the appearance of the chip antenna structure of the present application;

[0021] Figure 2 yes Figure 1 A three-dimensional schematic diagram of the appearance of the other side;

[0022] Figure 3 This is a schematic diagram of the electrical connection between the chip antenna and the antenna substrate of this application.

[0023] Wherein, the reference numerals:

[0024] 10: Chip antenna

[0025] 1: Carrier

[0026] 11: Top surface

[0027] 12: Bottom surface

[0028] 2: First radiation unit

[0029] 21: Upper radiation layer

[0030] 22: Periodic pattern layer

[0031] 221: First Radiation

[0032] 2211:S-shaped bend

[0033] 222: Second Radiation

[0034] 2221:S-shaped bend

[0035] 223: The Third Radial

[0036] 2231: U-shaped part

[0037] 2232: Left segment

[0038] 2233: right segment

[0039] 23: Side radiation layer

[0040] 3: Second radiation unit

[0041] 31: First lower radiation layer

[0042] 32: Second lower radiation layer

[0043] 4: Conductor

[0044] 41: Conductive column

[0045] 20: Antenna substrate

[0046] 201: First ground layer

[0047] 202: Naked Department

[0048] 203: Electrode end

[0049] 204:Signal feed line

[0050] 2041: first signal feed line

[0051] 2042: Second signal feed line

[0052] 2043: First spacing

[0053] 205: Second gap DETAILED DESCRIPTION

[0054] The technical content and detailed description of this application are described as follows with reference to the accompanying drawings:

[0055] See also Figure 1 、 2 The chip antenna of this application has a three-dimensional appearance and Figure 1 Schematic diagram of the other side appearance of the chip antenna. As shown in the figure: The antenna structure with a periodic pattern of the present application includes at least a chip antenna 10, and the chip antenna 10 includes: a carrier 1, a first radiating unit 2, a second radiating unit 3 and a conductor 4.

[0056] The carrier 1 is a square body having a top surface 11 and a bottom surface 12. In the present figure, the carrier 1 is made of glass fiber or ceramic material.

[0057] The first radiating element 2 is disposed on the top surface 11 of the carrier 1 and comprises two upper radiating layers 21, at least two periodic pattern layers 22, and a side radiating layer 23. The two upper radiating layers 21 are disposed on opposite ends of the top surface 11 of the carrier 1. Two symmetrical periodic pattern layers 22 are electrically connected between the two upper radiating layers 21. The two periodic pattern layers 22 are arranged with two or more identical lines in a pattern and coupled on the top surface 11 of the carrier 1 to form one radiating element of the chip antenna 10. The periodic pattern layer 22 comprises a first radiating line 221, a second radiating line 222, and a third radiating line 223. Both the first radiating line 221 and the second radiating line 222 are S-shaped and disposed parallel to each other on the top surface 11 of the carrier 1. The third radiating line 223 is U-shaped, with the U-shaped portion 2231 located between the first radiating line 221 and the second radiating line 222. A left segment 2232 and a right segment 2233 extend from the left and right sides of the U-shaped portion 2231, respectively. The left segment 2232 and the right segment 2233 are electrically connected to the S-shaped bend 2211 of the first radiating line 221 and the S-shaped bend 2221 of the second radiating line 222, respectively, at right angles to each other and are disposed on the top surface 11 of the carrier 1. Furthermore, a side radiating layer 23 is electrically connected between the two upper radiating layers 21 and the two periodic patterned layers 22. This side radiating layer 23 has a continuous square wave pattern.

[0058] It is worth mentioning that the periodic pattern layer 22 design of the chip antenna 10 adopts a repeated design of two or more periodic pattern layers 22 on the carrier 1 of the chip antenna 10, which has the advantage of increasing the bandwidth of the chip antenna 10 and reducing the chip antenna frequency, thereby improving performance.

[0059] The second radiation unit 3 is disposed on the bottom surface 12 of the carrier 1 and includes a first lower radiation layer 31 and a second lower radiation layer 32. The first lower radiation layer 31 and the second lower radiation layer 32 are both square. The area of ​​the second lower radiation layer 32 is larger than that of the first lower radiation layer 31.

[0060] It is worth mentioning that a 2.4 GHz low frequency path of the second radiation unit 3 is added to the bottom surface 12 of the chip antenna 10 to generate a dual-band design of 2.4 GHz in the first frequency band and 5 GHz in the second frequency band or a third frequency band (6 GHz to 7 GHz).

[0061] The conductor 4 is composed of a plurality of conductive pillars 41. The conductive pillars 41 are embedded in and penetrate the carrier 1, so that one end of the conductive pillars 41 is electrically connected to the two upper radiation layers 21, and the other end of the conductive pillars 41 is electrically connected to the first lower radiation layer 31 and the second lower radiation layer 32.

[0062] The chip antenna 10 employs a repetitive design of two or more periodic pattern layers 22 to increase its bandwidth and lower its frequency (reducing the frequency is necessary when the chip antenna 10's frequency is not low enough to meet the required frequency band), thereby improving performance. This allows for a dual-band or triple-band design using the low-frequency path of the second radiating element 3.

[0063] Moreover, the two radiation units, the first radiation unit (high frequency band) 2 and the second radiation unit (low frequency band) 3, are respectively arranged on the top and bottom surfaces of the carrier, so that the first radiation unit 2 controls the impedance, resonant frequency and radiation effect of the high frequency band, and utilizes the structure of two to more periodic pattern layers 22 to generate the frequency doubling of the low frequency band and control the frequency offset of the high frequency band, and uses the second radiation unit 3 to control the low frequency band to achieve the predetermined target impedance, resonant frequency, bandwidth and radiation effect, which can effectively reduce the size of the antenna.

[0064] See also Figure 3 , the schematic diagram of the electrical connection between the chip antenna and the antenna substrate of the present application; at the same time, refer to Figure 1 、 2 As shown in the figure: the present application electrically links the chip antenna 10 to the antenna substrate 20, and the chip antenna 10 is electrically linked to the antenna substrate 20 with a clearance area (not shown in the figure) for illustration.

[0065] The front surface of the antenna substrate 20 has a first ground layer 201 and a bare portion 202. The bare portion 202 has an electrode terminal 203 and a signal feeding line 204. The first lower radiating layer 31 and the second lower radiating layer 32 of the second radiating unit 3 of the chip antenna 10 are electrically connected to one end of the electrode terminal 203 and the signal feeding line 204, respectively.

[0066] The signal feed line 204 includes a first signal feed line 2041, a second signal feed line 2042, and a first gap 2043 between the first and second signal feed lines 2041, 2042. A second gap 205 between the first and second signal feed lines 2041, 2042, and the first ground layer 201 can be electrically connected via a matching component (not shown) for impedance and frequency adjustment. The back surface of the antenna substrate 20 has a second ground layer (not shown) and a clearance area (not shown). In this figure, the matching component is a capacitor or an inductor.

[0067] The above are only preferred embodiments of the present application and are not intended to limit the scope of implementation of the present application. That is, all equivalent changes and modifications made within the scope of the present patent application are covered by the scope of the present patent application.

Claims

1. An antenna structure having a periodic pattern, comprising at least one chip antenna, characterized in that: The chip antenna includes: A carrier, which is a square body and has a top surface and a bottom surface; a first radiation unit disposed on the top surface of the carrier, the first radiation unit comprising: two upper radiation layers, at least two periodic pattern layers, and a side radiation layer; the two upper radiation layers are respectively disposed at two ends of the top surface, the two upper radiation layers are electrically connected to the two symmetrical periodic pattern layers, and the two periodic pattern layers are disposed on the top surface in a coupled relationship; and a side radiation layer is electrically connected to one side between the two upper radiation layers and the two periodic pattern layers; a second radiation unit disposed on the bottom surface of the carrier, wherein the second radiation unit comprises: a first lower radiation layer and a second lower radiation layer; A conductor is disposed inside the carrier and passes through the carrier, with one end electrically connected to the two upper radiation layers and the other end electrically connected to the first lower radiation layer and the second lower radiation layer.

2. The antenna structure having a periodic pattern according to claim 1, wherein: Each periodic pattern layer includes a first radiation line, a second radiation line and a third radiation line.

3. The antenna structure having a periodic pattern according to claim 2, wherein: The first radiating line and the second radiating line are both S-shaped and are arranged on the top surface of the carrier in parallel with each other.

4. The antenna structure having a periodic pattern according to claim 3, wherein: The third radiating line is U-shaped, and its upper U-shaped portion is located between the first radiating line and the second radiating line. A left line segment and a right line segment in the shape of a straight line extend from the left and right sides of the U-shaped portion, and the left line segment and the right line segment are respectively electrically connected to the S-shaped bend of the first radiating line and the S-shaped bend of the second radiating line in a perpendicular relationship to each other and are arranged on the top surface of the carrier.

5. The antenna structure having a periodic pattern according to claim 1, wherein: The side radiation layer is a continuous square wave pattern.

6. The antenna structure with a periodic pattern according to claim 1, wherein: An area of ​​the second lower radiation layer is greater than an area of ​​the first lower radiation layer.

7. The antenna structure with a periodic pattern according to claim 1, wherein: The conductor is composed of a plurality of conductive pillars, which are buried in and penetrate the carrier, with one end of each of the conductive pillars electrically connected to the two upper radiation layers, and the other end of each of the conductive pillars electrically connected to the first lower radiation layer and the second lower radiation layer.

8. The antenna structure with a periodic pattern according to claim 1, wherein: The carrier is made of glass fiber or ceramic material.

9. The antenna structure with a periodic pattern according to claim 1, wherein: The chip antenna is electrically connected to an antenna substrate having a clearance area. The front of the antenna substrate has a first ground layer and a bare portion. The bare portion has an electrode end and a signal feed line. The first lower radiation layer and the second lower radiation layer of the second radiation unit are electrically connected to the electrode end and one end of the signal feed line respectively.

10. The antenna structure with a periodic pattern according to claim 9, wherein: The signal feeding line includes a first signal feeding line, a second signal feeding line, and a first distance between the first signal feeding line and the second signal feeding line. There is a second distance between the first signal feeding line and the second signal feeding line and the first ground layer.

11. The antenna structure having a periodic pattern according to claim 10, wherein: A matching component is electrically connected between the first distance and the second distance to adjust impedance and frequency.

12. The antenna structure with a periodic pattern according to claim 10, wherein: The back surface of the antenna substrate has a second ground layer and the clearance area.

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