TWM561337U - Dual-polarized antenna - Google Patents

Abstract

A dual-polarized antenna includes a substrate, a first antenna, and a second antenna. Therefore, this creation is independent of the low-frequency path and the high-frequency path, and has great convenience in impedance matching adjustment, that is, the mutual influence is extremely small. The low-frequency path has a bent portion, which can reduce the installation area of the antenna, and the high-frequency path is disposed within the overall antenna structure, so that the frequency can be reduced without additionally extending the path to excite the frequency band. Preferably, the matching path is set to adjust the overall matching mechanism to improve impedance matching. And in the second antenna, the depletion region and the first to third trenches are provided, so as to effectively produce the effect of multipath wideband, thereby achieving the effect.

Description

Dual polarized antenna

This creation is a dual-polarized antenna, especially a broadband, dual-polarized antenna that effectively reduces the size of the antenna and meets the requirements for horizontal and vertical polarization.

A dual-polarization antenna is a relatively new type of antenna technology. For example, an antenna with two orthogonal polarization directions of +45° and -45° is combined, and operates in a duplex mode. Of course, with the evolution of communication technology, the design of dual-polarized antennas is better to apply a wide range of practicality and ease of integration. A conventional single-polarized antenna can only receive or transmit signals in a single direction, but cannot receive or transmit signals in other directions, and thus is limited in use. Therefore, in order to make the application of the antenna more extensive, so-called dual-polarized antennas can be used, and antennas with two directions of signals can be received or transmitted. However, such dual-polarized antennas often have problems of poor isolation.

In addition, in recent years, the rapid development of wireless communication technology, Long Term Evolution (LTE) communication technology came into being. Since the LTE 700/2300/2500 covers 704~960MHz and 1710~2690MHz, it covers the five-band operation of the Wireless Wide Area Network (WWAN) compared to the traditional wireless area network (Wireless). Local area network (WLAN) 2.4G, 5G antenna, the LTE antenna covers lower frequency and larger bandwidth. Therefore, how to balance the antenna multi-frequency operation and receiving quality, which is an antenna Need to pay attention to the design.

Therefore, in the dual-polarized antenna, please refer to the first figure and the second figure, which includes a substrate 1 having a first surface and a second surface opposite to the first surface, and on the first surface The upper surface of the first radiator 11 and the second radiator 12 are formed on the first surface, and the first radiator 11 and the second radiator 12 are formed on the first surface to form two symmetrical radiators. 13 and the fourth radiator 14 , the first radiator 11 and the second radiator 12 are directly electrically connected to each other through the first conductive paths 15 on the first surface, the third radiator 13 and the fourth radiation The body 14 is electrically connected to the second surface through the second conductive path 16 and the third conductive path 17. The detailed structure of the dual-polarized antenna radiator is as shown in the first figure and the second figure, and is not Let me repeat.

However, in this technical solution, electronic products having wireless communication functions, such as a notebook computer, a smart phone, a personal digital assistant, etc., transmit or receive radio waves through an antenna to transmit or exchange radios. Signals to access the wireless network. Therefore, in order to make it easier for users to access the wireless communication network, the bandwidth of the ideal antenna should be increased as much as possible within the permissible range, and the size should be minimized to match the trend of shrinking electronic products. In addition, as wireless communication technologies continue to evolve, the number of antennas configured for electronic products may increase. The Long Term Evolution (LTE) wireless communication system can support multi-input multi-output (MIMO) communication technology, that is, related electronic products can synchronously transmit and receive wireless signals through multiple or multiple sets of antennas. In order to improve the spectrum efficiency and transmission rate of the wireless communication system, and to improve the communication quality, it is necessary to improve the system data transmission capacity and transmission distance without affecting the bandwidth or the total transmission power consumption. Question.

Therefore, how to improve the above-mentioned shortcomings, that is, the application for this case The technical difficulties that people want to solve are located.

In view of the lack of practice, this creation aims to solve and improve the problems and defects in the practice.

In order to achieve the above object, the present invention provides a dual-polarized antenna comprising: a substrate; a first antenna is formed on the substrate, the first antenna is provided with two radiating portions, each of the radiation The first feeding end is provided with a first feeding line and a second feeding line respectively, and the first feeding line of each of the radiating portions is a second high-frequency path and a second high-frequency path are respectively extended from the same one side of the second feeding line, and the first feeding line and the second feeding line of each of the radiating parts are the same by the other one a first matching path and a second matching path respectively extending from the side, and the first feeding line of each radiating portion is the same side of the first matching path as the first matching path of the first radiating portion Each of the second feeding lines of each of the radiating portions is respectively extended with a second low frequency path by one side of the second high frequency path and the second matching path. a second antenna, which is formed in the The second antenna is provided with a feeding path, a third radiating portion and a grounding portion, the feeding path is connected to the third radiating portion, and the third radiating portion is provided with a depletion region, the third radiation A first trench and a second trench are respectively extended in the depletion region, and at least one third trench in an open form is disposed on the third radiating portion.

One of the radiating portions is formed on the first surface of the substrate, and the other radiating portion is formed on the substrate having a second surface opposite to the second surface. A surface way to set. And a first bending portion and a second bending portion are respectively disposed on the first low frequency path and the second low frequency path of the one of the radiation portions, and wherein the first bending portion and the second bending portion are respectively disposed A third bent portion and a fourth bent portion are respectively disposed on the first low frequency path and the second low frequency path of the other radiating portion. Preferably, the first low-frequency path and the second low-frequency path of the one of the radiating portions are respectively provided with a first L-shaped line segment and a second L-shaped line segment, and the first low-frequency path and the second of the other radiating portion. A third L-shaped line segment and a fourth L-shaped line segment are respectively disposed on the low frequency path. The feeding path, the third radiating portion and the ground portion are formed on the first surface of the substrate.

In addition, the depletion zone is rectangular. And a first oblique side and a second oblique side are disposed around the third radiating portion. Preferably, a plurality of third oblique sides are disposed around the grounding portion. The shape of the first high frequency path and the second high frequency path of the one of the radiation portions is L-shaped.

Therefore, this creation is independent of the low-frequency path and the high-frequency path, and has great convenience in impedance matching adjustment, that is, the mutual influence is extremely small. The low-frequency path has a bent portion, which can reduce the installation area of the antenna, and the high-frequency path is disposed within the overall antenna structure, so that the frequency can be reduced without additionally extending the path to excite the frequency band. Preferably, the matching path is set to adjust the overall matching mechanism to improve impedance matching. And in the second antenna, the depletion region and the first to third trenches are provided, so as to effectively produce the effect of multipath wideband, thereby achieving the effect.

[Use]

1‧‧‧Substrate

11‧‧‧First radiator

12‧‧‧Second radiator

13‧‧‧ Third radiator

14‧‧‧Fourth radiator

15‧‧‧First conductive path

16‧‧‧Second conductive path

17‧‧‧ Third conductive path

[this creation]

1‧‧‧Substrate

11‧‧‧ first surface

12‧‧‧ second surface

2‧‧‧first antenna

21‧‧‧ Radiation Department

210‧‧‧first feed end

211‧‧‧First feed line

212‧‧‧Second feed line

213‧‧‧First high frequency path

214‧‧‧Second high frequency path

215‧‧‧First matching path

216‧‧‧ second matching path

217‧‧‧First low frequency path

218‧‧‧second low frequency path

22‧‧‧ Radiation Department

221‧‧‧First feed line

222‧‧‧second feed line

223‧‧‧First high frequency path

224‧‧‧second high frequency path

225‧‧‧First matching path

226‧‧‧ second matching path

227‧‧‧First low frequency path

228‧‧‧second low frequency path

3‧‧‧second antenna

31‧‧‧Feed in the path

32‧‧‧ Third Radiation Department

320‧‧ ‧ Vacant Zone

321‧‧‧First groove

322‧‧‧Second trench

323‧‧‧ third trench

324‧‧‧First bevel

325‧‧‧second bevel

33‧‧‧ Grounding Department

331‧‧‧The third hypotenuse

40‧‧‧First bend

41‧‧‧ Third bend

50‧‧‧Second bend

51‧‧‧Fourth bend

60‧‧‧First L-shaped line segment

61‧‧‧ third L-shaped line segment

70‧‧‧Second L-shaped line segment

71‧‧‧4th L-shaped line segment

220‧‧‧first feed end

The first figure is a structure of a conventional dual-polarized antenna and a partial perspective view thereof.

The second figure is a structural view of the second surface of the first figure which is conventionally used.

The third figure is a schematic diagram of the planar (first surface) structure of the dual-polarized antenna and its substrate of the preferred embodiment of the present invention.

The fourth figure is a schematic diagram of the planar (second surface) structure of the dual-polarized antenna and its substrate of the preferred embodiment of the present invention.

The fifth drawing is a plan view (first surface) structure and a perspective view of the dual-polarized antenna and its substrate of the preferred embodiment of the present invention.

The sixth figure is the return loss of the first antenna of the preferred embodiment of the present invention and its frequency diagram.

The sixth A diagram is a comparison of the voltage standing wave ratio (VSWR) of the sixth embodiment with the frequency diagram of the preferred embodiment of the present invention.

The seventh figure is the reflection loss of the second antenna of the preferred embodiment of the present invention and its frequency diagram.

The seventh A diagram is a comparison of the voltage standing wave ratio and the frequency diagram of the seventh embodiment with respect to the preferred embodiment of the present invention.

The eighth figure is the insertion loss and the frequency map between the first antenna and the second antenna of the preferred embodiment of the present invention, and the absolute value of the feed loss may be referred to as isolation.

The ninth figure is a description of the antenna characteristic data of the first antenna resonance in the frequency band of 704 to 960 MHz in the preferred embodiment of the present invention.

The tenth figure shows the antenna characteristic data of the first antenna resonance in the band of 1710~2690MHz in the preferred embodiment of the present invention.

The eleventh figure is a description of the antenna characteristic data of the second antenna resonance in the frequency band of 704 to 960 MHz in the preferred embodiment of the present invention.

The twelfth figure is an antenna characteristic data description of the second antenna resonance of the preferred embodiment of the present invention in the frequency band of 1710~2690 MHz.

In order for your review board to have a clear understanding of the content of this work, please refer to the following examples with diagrams and symbols, please refer to it.

Referring to Figures 3 through 5, this creation provides a dual-polarized antenna. It comprises: a substrate 1, a first antenna 2 and a second antenna 3.

The first antenna 2 is formed on the substrate 1. The first antenna 2 is provided with two radiating portions 21 and 22. Each of the radiating portions 21 and 22 is provided with a first feeding end 210, 220. A first feed line 210, 220 extends from both sides with a first feed line 211, 221 and a second feed line 212, 222, the first feed line of each of the radiation portions 21, 22. 211, 221 and the second feeding lines 212, 222 respectively extend from the same one side to a first high frequency path 213, 223 and a second high frequency path 214, 224, each of the radiating portions 21, 22 The first feeding lines 211, 221 and the second feeding lines 212, 222 respectively extend from the other identical side to a first matching path 215, 225 and a second matching path 216, 226, and each of the The first feeding lines 211 and 221 of the radiating portions 21 and 22 are respectively extended from the same side of the first matching paths 215 and 225 of the first high-frequency paths 213 and 223 of the radiating portions 21 and 22 respectively. The first low frequency path 217, 227, the second feeding line 212, 222 of each of the radiating portions 21, 22 is the second high frequency path 21 of each of the radiating portions 21, 22. A second low frequency path 218, 228 extends from one side of the second matching path 216, 226, respectively.

In this embodiment, the first antenna 2 can form a horizontal polarization. In addition, one of the radiating portions 21 is formed on the first surface 11 of the substrate 1 , and the other radiating portion 22 is formed on the second surface 12 of the substrate 1 , thereby reducing the antenna. The second surface 12 is disposed in such a manner that the opposite surface is opposite to the first surface 11.

The first low-frequency path 217 and the second low-frequency path 218 of the one of the radiating portions 21 are respectively provided with a first bent portion 40 and a second bent portion 50, and the first low frequency of the other of the radiating portions 22 A third bent portion 41 and a fourth bent portion 51 are respectively disposed on the path 227 and the second low frequency path 228. Therefore, in addition to the low frequency path and the high frequency path, the creation is independent of the impedance. There is great convenience in matching adjustments, that is, the mutual influence is minimal. The low-frequency path is provided with a bent portion, which can reduce the installation area of the antenna, and the high-frequency path is disposed within the structure of the whole antenna (first antenna 2), so that the frequency band can be excited without an additional extension path. Reduce the antenna area.

Of course, the first low-frequency path 217 and the second low-frequency path 218 of one of the radiating portions 21 are respectively provided with a first L-shaped line segment 60 and a second L-shaped line segment 70, and the first low-frequency portion of the other radiating portion 22 A third L-shaped line segment 61 and a fourth L-shaped line segment 71 are respectively disposed on the path 227 and the second low frequency path 228. In the same way, this setting method can further reduce the antenna area, which is the characteristic of the creation. Preferably, by setting the first matching paths 215, 225 and the second matching paths 216, 226, the antenna path is increased to adjust the overall matching mechanism, and the impedance matching of the first antenna 2 can be improved.

In addition, the second antenna 3 is formed on the substrate 1. The second antenna 3 is provided with a feeding path 31, a third radiating portion 32 and a grounding portion 33. The feeding path 31 and the third radiation are provided. The third radiating portion 32 is provided with a depletion region 320. The depleting region 320 of the third radiating portion 32 respectively defines a first trench 321 and a second trench 322, and the third radiation The portion 32 is provided with a plurality of third grooves 323 (three in number) in an open form. That is, the individual ends of the third trenches 323 are disposed at the edges of the third radiating portion 32.

In the embodiment, the feeding path 31, the third radiating portion 32 and the grounding portion 33 are formed on the first surface 11 of the substrate 1. Therefore, the second antenna 3 can be formed to be vertically polarized, and is a dipole antenna compared to the first antenna 2, and the second antenna 3 is in the form of a monopole antenna. Therefore, in the second antenna 3, the depletion region 320 and the first trench 321, the second trench 322, and the third trenches 323 are provided, which are effective for manufacturing a multipath wideband, thereby achieving an effect.

Preferably, the depletion region 320 is rectangular, and the effect of the wide frequency is optimal. And a circumference (edge) of the third radiating portion 32 is provided with a first oblique side 324 and a second oblique side 325 to generate an oblique direction. The current, in turn, achieves a stable broadband effect. In addition, a plurality of third oblique sides 331 are provided on the periphery (edge) of the grounding portion 33, and similarly, the matching of the bandwidth is improved. Moreover, the shape of the first high frequency path 223 and the second high frequency path 224 of one of the radiating portions 22 is L-shaped, thereby increasing the path and improving the high-frequency impedance matching, which is a feature of the creation.

In order to explain this creation more clearly and to support the creative features of this creation, further descriptions of antenna characteristics and data are provided. Therefore, please refer to the fifth, sixth and sixth A diagrams, which represent the reflection loss of the first antenna 2 operating in the LTE band and the voltage standing wave ratio waveform of the comparison. Preferably, the reflection loss is -19.879 dB in the high frequency band of 2.7 GHz and the voltage standing wave ratio of the comparison is as low as 1.2257, which is sufficient to prove that the frequency response of the high frequency is significantly improved, which is a feature of the creation.

In addition, please refer to the fifth diagram, the seventh diagram and the seventh diagram A, which represent the reflection loss of the second antenna 3 operating in the LTE frequency band and the voltage standing wave ratio waveform of the comparison. Preferably, the reflection loss is -31.866dB in the high frequency band of 2.5GHz and the voltage standing wave ratio of the comparison is as low as 1.0524, which is close to the ideal value, which is sufficient to prove that the frequency response of the high frequency is significantly improved, and other frequency bands The reflection loss can be less than 10dB, and the voltage standing wave ratio can be no more than 2, which is the characteristic of the creation.

Further, please refer to the fifth and eighth diagrams, wherein the feed loss between the first antenna 2 and the second antenna 3, the absolute value thereof may be referred to as isolation. In this embodiment, the feed loss has a superior performance except for the 960 MHz band. When the first antenna 2 and the second antenna 3 operate with each other, the mutual interference degree is low, that is, the mutual interference is Achieve improved isolation and achieve the goal of broadband isolation.

In addition, as shown in the ninth and tenth figures, it is the day of the first antenna 2 The description of the line characteristic data; and the antenna characteristic data of the second antenna 3 are described in conjunction with the eleventh and twelfth drawings, and will not be described again.

The above discussion is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; therefore, the equivalent shape, structure or combination of changes made in the spirit and scope of the present invention should be It is covered by the patent application scope of this creation.

Claims (9)

A dual-polarized antenna includes: a substrate; a first antenna is formed on the substrate, the first antenna is provided with two radiating portions, and each of the radiating portions is provided with a first feeding end. Each of the first feeding ends is respectively extended with a first feeding line and a second feeding line, and the first feeding line and the second feeding line of each of the radiating parts are respectively one of the same a first high-frequency path and a second high-frequency path are respectively extended on the side, and the first feeding line and the second feeding line of each of the radiating portions are respectively extended from the same other side to have a first matching path And a second matching path, and the first feeding line of each of the radiating portions is respectively provided with a first low frequency path by one side of the first high frequency path and the first matching path of each radiating portion. The second feeding line of each radiating portion is respectively provided with a second low frequency path by one side of the second high frequency path and the second matching path of each radiating portion; a second antenna is formed Provided on the substrate, the second antenna is provided with a feeding path a third radiating portion and a grounding portion, the feeding path is connected to the third radiating portion, the third radiating portion is provided with a depletion region, and the depleting region of the third radiating portion is respectively extended with a first trench And a second trench, and the third radiating portion is provided with at least one third trench in an open form. The dual-polarized antenna according to claim 1, wherein the one of the radiating portions is formed on the first surface of the substrate, and the other radiating portion is formed on the substrate. On the two surfaces, the second surface is disposed in a manner opposite to the first surface. The dual-polarized antenna of claim 1, wherein the first low-frequency path and the second low-frequency path of the one of the radiating portions are respectively provided with a first bent portion and a second bent portion, and the A third bent portion and a fourth bent portion are respectively disposed on the first low frequency path and the second low frequency path of the other radiating portion. The dual-polarized antenna according to claim 3, wherein the first low-frequency path and the second low-frequency path of the one of the radiating portions are respectively provided with a first L-shaped line segment and a second L-shaped line segment, wherein A third L-shaped line segment and a fourth L-shaped line segment are respectively disposed on the first low frequency path and the second low frequency path of the other radiating portion. The dual-polarized antenna of claim 1, wherein the depletion region is rectangular. The dual-polarized antenna of claim 1, wherein a first oblique side and a second oblique side are disposed around the third radiating portion. The dual-polarized antenna according to claim 1, wherein a plurality of third oblique sides are disposed around the ground portion. The dual-polarized antenna according to claim 2, wherein the feeding path, the third radiating portion and the ground portion are formed on the first surface of the substrate. The dual-polarized antenna according to claim 1, wherein the first high-frequency path and the second high-frequency path of the one of the radiating portions have an L-shape.