CN204156084U - Dual polarized antenna - Google Patents
Dual polarized antenna Download PDFInfo
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- CN204156084U CN204156084U CN201420590444.0U CN201420590444U CN204156084U CN 204156084 U CN204156084 U CN 204156084U CN 201420590444 U CN201420590444 U CN 201420590444U CN 204156084 U CN204156084 U CN 204156084U
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Abstract
A kind of dual polarized antenna, it comprises ground connection substrate and the antenna substrate separated from one another with ground connection substrate.Antenna substrate comprises isolation part and at least two and to be arranged on the other antenna element in two opposition sides of isolation part to miss one another relative to isolation part, at least two antenna elements electrical isolation and have different polarised directions each other.Each antenna element at least comprises in polygon and has the Department of Radiation of closed bar shaped fluting, and is arranged at the Department of Radiation wherein other and feeder line district be electrically connected with Department of Radiation, side.Feeder line district comprises signal feed-in point, is electrically connected at the L shape feeder line of signal feed-in point, branched line and radial line, wherein branched line and radial line lay respectively at two opposition sides of L shape feeder line, branched line is connected to a turning point of L shape feeder line, and radial line is connected to L shape feeder line and Department of Radiation.
Description
Technical field
The application has about a kind of dual polarized antenna, and espespecially one can support the dual polarized antenna of Long Term Evolution (Long TermEvolution, LTE) wireless telecommunication system.
Background technology
Portable electronic product is more prevalent along with the prosperity of mobile communication technology in recent years, common portable electronic product such as: the portable electronic devices of hand-held computer, mobile phone, multimedia player and other mixed functions.These portable electronic products are launched through antenna or are received radio wave, to transmit or to exchange radio signal, and then access wireless networking.
Along with mechanics of communication development, Long Term Evolution (Long Term Evolution, LTE) wireless telecommunication system may replace traditional mechanics of communication gradually.Long Term Evolution (Long Term Evolution, LTE) wireless telecommunication system can support multiple-input and multiple-output (Multi-input Multi-output, MIMO) mechanics of communication.That is, application LTE mechanics of communication, related electronic products can pass through multiple (or many groups) antenna synchronous transmitting/receiving wireless signal, with when not increasing frequency range or total transmitting power consume (Transmit PowerExpenditure), the data throughput (Throughput) of increase system and transmitting range, and then effectively promote spectrum efficiency and the transmission rate of wireless telecommunication system, improve communication quality.
But the operational frequency bands that Long Term Evolution wireless telecommunication system adopts is more broad.Therefore, for being applied to the antenna of Long Term Evolution wireless telecommunication system, need to there is larger frequency range, to make the radio signal of the multiple frequency range of transmitting-receiving function process.Accordingly, the design difficulty that be applied to the antenna of LTE communication system is larger than traditional antenna.
Utility model content
The embodiment of the present application is to provide a kind of dual polarized antenna, the structure of its antenna element through particular design, to increase operation frequency range.
The dual polarized antenna that the application provides comprises ground connection substrate and antenna substrate.Antenna substrate has upper surface and the lower surface with upper surface setting opposite each other.The lower surface of antenna substrate in the face of ground connection substrate, and antenna substrate and ground connection substrate separated from one another.Antenna substrate comprises isolation part and at least two and to be arranged on the other antenna element in two opposition sides of isolation part to miss one another relative to isolation part, at least two described antenna elements electrical isolation and there is different polarised directions each other, each antenna element at least comprises Department of Radiation and feeder line district, wherein Department of Radiation is polygon and has a bar shaped fluting closed, and feeder line district is arranged at by the wherein side of Department of Radiation.Feeder line district is equipped with signal feed-in point, is electrically connected at the L shape feeder line of signal feed-in point, branched line and radial line, wherein L shape feeder line is connected to Department of Radiation, and branched line and radial line lay respectively at two opposition sides of L shape feeder line, wherein branched line is connected to the turning point of L shape feeder line, and radial line is connected to L shape feeder line and Department of Radiation.
According to an execution mode of the application, wherein said L shape feeder line comprises: one first line segment, and described signal feed-in point is positioned at a wherein end of described first line segment; And one second line segment, wherein one end of described second line segment is connected to the other end of described first line segment and forms described turning point, and the other end of described second line segment is connected to described Department of Radiation, the bearing of trend of wherein said second line segment is perpendicular to the bearing of trend of described first line segment.
According to another execution mode of the application, wherein said radial line is arranged in the breach that described L shape feeder line and described Department of Radiation define jointly, and form one first gap between described radial line and described L shape feeder line, and form one second gap between described radial line and described Department of Radiation.
According to another execution mode of the application, wherein said first gap has identical opening direction with described second gap, and the opening direction in described first gap is haply perpendicular to the bearing of trend that described bar shaped is slotted.
According to another execution mode of the application, the described bar shaped fluting of wherein said antenna element has with described isolation part the bearing of trend paralleled, and the described bar shaped fluting of antenna element described in another has perpendicular bearing of trend with described isolation part.
According to another execution mode of the application, wherein said branched line has a linkage section and a straightway, and wherein said linkage section is connected between described turning point and described straightway, and described straightway extends towards the direction away from described Department of Radiation.
According to another execution mode of the application, wherein said at least two antenna elements have identical pattern.
According to another execution mode of the application, wherein antenna element described in is relative to antenna element 90-degree rotation described in another.
According to another execution mode of the application, wherein said Department of Radiation comprises a rectangular portion and a right-angled trapezium portion, the upper base in wherein said right-angled trapezium portion is parallel with the bearing of trend that described bar shaped is slotted, and described bar shaped fluting to be positioned in described rectangular portion and to depart from the symmetrical centre of described rectangular portion.
According to another execution mode of the application, the spacing between wherein said antenna substrate and described ground connection substrate is between 6mm to 10mm.
The beneficial effect of the application can be, the dual polarized antenna that the embodiment of the present application provides, and its antenna element has particular design pattern, can increase the operation frequency range of antenna.The dual polarized antenna of the embodiment of the present application is also applicable in Long Term Evolution (Long Term Evolution, LTE) wireless telecommunication system, and operation frequency range scope can by 1.4GHz to 1.9GHz.
For enable feature and the technology contents of further understanding the application, refer to the following detailed description about the application and accompanying drawing, but appended accompanying drawing only provides reference and explanation use, is not used for being limited the application.
Accompanying drawing explanation
Figure 1A is the schematic perspective view of the application's dual polarized antenna.
Figure 1B is the upper schematic diagram of the application's dual polarized antenna.
Fig. 2 A is the curve chart of obtained the at different frequencies reflection loss (Return Loss) of the first antenna element of the application's dual polarized antenna.
Fig. 2 B is the curve chart of obtained the at different frequencies reflection loss of the second antenna element of the application's dual polarized antenna.
The curve chart of the first antenna element that Fig. 2 C is the application's dual polarized antenna and obtained the at different frequencies between the two reflection loss of the second antenna element.
The curve chart of the radiation efficiency that the first antenna element that Fig. 3 A is the application's dual polarized antenna and the second antenna element obtain at frequency 1.41GHz to 1.5GHz respectively.
The curve chart of the radiation efficiency that the first antenna element that Fig. 3 B is the application's dual polarized antenna and the second antenna element obtain at frequency 1.66GHz to 1.80GHz respectively.
The curve chart of the radiation efficiency that the first antenna element that Fig. 3 C is the application's dual polarized antenna and the second antenna element obtain at frequency 1.81GHz to 2.00GHz respectively.
Fig. 4 A be the first antenna unit operations of the application's dual polarized antenna when different frequency at the radiation pattern schematic diagram of X-Z plane.
Fig. 4 B be the first antenna unit operations of the application's dual polarized antenna when different frequency at the radiation pattern schematic diagram of Y-Z plane.
Fig. 4 C be the first antenna unit operations of the application's dual polarized antenna when different frequency at the radiation pattern schematic diagram of X-Y plane.
Fig. 5 A is the second antenna element of the application's dual polarized antenna radiation pattern schematic diagram in X-Z plane when operating in different frequency.
Fig. 5 B is the second antenna element of the application's dual polarized antenna radiation pattern schematic diagram in Y-Z plane when operating in different frequency.
Fig. 5 C is the second antenna element of the application's dual polarized antenna radiation pattern schematic diagram at X-Y plane when operating in different frequency.
The curve chart of the first antenna element that Fig. 6 A is the application's dual polarized antenna and the antenna gain that the second antenna element obtains respectively under frequency 1.4GHz to 1.5GHz (antenna gain).
The curve chart of the first antenna element that Fig. 6 B is the application's dual polarized antenna and the antenna gain that the second antenna element obtains respectively under frequency 1.65GHz to 1.8GHz (antenna gain).
The curve chart of the first antenna element that Fig. 6 C is the application's dual polarized antenna and the antenna gain that the second antenna element obtains respectively under frequency 1.80GHz to 2.0GHz (antenna gain).
[symbol description]
Dual polarized antenna 100
Ground connection substrate 1
Antenna substrate 2
Upper surface 2a
Lower surface 2b
First antenna element 21
First Department of Radiation 210
Right-angled trapezium portion 210a, 220a
Rectangular portion 210b, 220b
First bar shaped fluting 210h
First signal feed-in point 211
One L shape feeder line 212
First line segment 212a, 222a
Second line segment 212b, 222b
Turning point 212c, 222c
First branched line 213
Linkage section 213a, 223a
Straightway 213b, 223b
First radial line 214
First gap 215,225
Second gap 216,226
Second antenna element 22
Second Department of Radiation 220
Second bar shaped fluting 220h
Secondary signal load point 221
2nd L shape feeder line 222
Second branched line 223
Second radial line 224
Isolation part 23
Spacing H
Curve E1, E2, G1, G2, F11, F12, F13, F21,
F22、F23
Reflection loss value A1 ~ A3, B1 ~ B3, C1 ~ C3
Radiation efficiency maximum M1, M2, M3, M4, M5, M6
Maxgain value P1, P2, P3, P4, P5, P6
Embodiment
Be below the execution mode that " dual polarized antenna " disclosed in the application is described by specific instantiation, those skilled in the art can be understood advantage and the effect of the application easily by the content disclosed in this specification.The application is also implemented by other different specific embodiments or is applied, and the every details in this specification also based on different viewpoints and application, can carry out various modification and change under not departing from the spirit of the application.In addition, the accompanying drawing of the application is only simple declaration, not describes according to actual size, that is unreacted goes out be correlated with the actual size of formation, first give chat bright.Following execution mode will further describe the correlation technique content of the application, but disclosed content be not used to the technology category limiting the application.
Please refer to Figure 1A and Figure 1B, Figure 1A is the schematic perspective view of the application's dual polarized antenna, and Figure 1B is the upper schematic diagram of the application's dual polarized antenna.The dual polarized antenna 100 of the embodiment of the present application comprises ground connection substrate 1 and antenna substrate 2, and wherein antenna substrate 2 is positioned on ground connection substrate 1, and antenna substrate 2 is separated from one another and arrange with ground connection substrate 1.That is, maintain a spacing H between antenna substrate 2 and ground connection substrate 1, and be not electrically connected with ground connection substrate 1.Therefore, antenna substrate 2 and ground connection substrate 1 are separate structure.
In the embodiment of the present application, ground connection substrate 1 can be made up of conductor material, in order to the antenna-reflected plate as antenna substrate 2.In other embodiments, ground connection substrate 1 also can be insulator, but forms a conductor layer on the surface towards antenna substrate 1, the antenna reflective face using conductor layer as antenna substrate 2.Ground connection substrate 1 can be coupled to a system ground of communication device, maybe can belong to the some of system ground.Because ground connection substrate 1 can be used as the antenna-reflected plate of antenna substrate 2, therefore antenna energy can be made comparatively to concentrate in the normal direction of antenna substrate 2, namely concentrate on the direction of the Z axis that Figure 1A illustrates, and then make the dual polarized antenna 100 of the embodiment of the present application have higher directive property and antenna gain, and promote the transmission range of wireless signal.In the present embodiment, the spacing between ground connection substrate 1 and antenna substrate 2 is between 6mm to 10mm, and the medium between ground connection substrate 1 and antenna substrate 2 is air.
Antenna substrate 2 has a upper surface 2a and a lower surface 2b with described upper surface 2a setting opposite each other.When antenna substrate 2 is assembled mutually with ground connection substrate 1, be in the face of ground connection substrate 1 with lower surface 2b.In addition, antenna substrate 2 comprises an isolation part 23 and at least two electrical isolation and have the antenna element of different polarised direction each other, and wherein these two antenna elements are relative to isolation part 23, by two opposition sides being arranged on isolation part 23 to miss one another.In certain embodiments, isolation part 23 and two antenna elements can be the metal pattern layer being formed at antenna substrate 2 upper surface 2a, and the material of metal pattern layer is such as copper, silver, iron, aluminium or its alloy.
Specifically, in the embodiment shown in Figure 1A and Figure 1B, the center of two above-mentioned antenna elements can equidistantly or non-equally arrange in a straight line, and forms aerial array.Isolation part 23 between two antenna elements, and has the bearing of trend parallel with Y-axis.In addition, in the embodiment of the present application, the line of centres of two antenna elements and isolation part 23 bearing of trend can shape in an acute angle.In one embodiment, two antenna elements have identical pattern, and wherein an antenna element rotates a predetermined angular relative to another antenna element.
Hereinafter, will for the first antenna element 21 and the second antenna element 22, describe in detail the structure of two antenna elements and two antenna elements relative to isolation part 23 setting.In the embodiment of the present application, the first antenna element 21 and the second antenna element 22 are the left and right sides laying respectively at isolation part 23, and the first antenna element 21 is relative to the second antenna element 22 90-degree rotation.
Specifically, the first antenna element 21 have the first Department of Radiation 210 and and the first feeder line district of being electrically connected of the first Department of Radiation 210, wherein the first feeder line district be arranged at the first Department of Radiation 210 wherein side by.In the embodiment of the present application, the first feeder line district is between the first Department of Radiation 210 and isolation part 23.Similarly, the second feeder line district that the second antenna element 22 has the second Department of Radiation 220 and is electrically connected with the second Department of Radiation 220, and the second feeder line district is also arranged at by the wherein side of the second Department of Radiation 220.With the first antenna element 21 unlike, the second feeder line district of the second antenna element 22 and the second Department of Radiation 220 are jointly arranged in by the side of isolation part 23 along Y direction.
First Department of Radiation 210 and the second Department of Radiation 220 are all in polygon.In the embodiment of the present application, see it by Figure 1B, the first Department of Radiation 210 has an a rectangular portion 210b and right-angled trapezium portion 210a, and wherein the bearing of trend of the upper base of right-angled trapezium portion 210a is parallel to X-axis, namely vertical with the bearing of trend of isolation part 23.In addition, the first Department of Radiation 210 has a first bar shaped fluting 210h closed, and the bearing of trend of the first bar shaped fluting 210h is parallel with the upper base of right-angled trapezium portion 210a, namely perpendicular to the bearing of trend of isolation part 23.In one embodiment, the first bar shaped fluting 210h is positioned on rectangular portion 210b, and departs from the symmetrical centre of rectangular portion 210b away from right-angled trapezium portion 210a.
Similar in appearance to the first Department of Radiation 210, second Department of Radiation 220, also there is rectangular portion 220b and right-angled trapezium portion 220a, but the bearing of trend of the upper base of the right-angled trapezium portion 220a of the second Department of Radiation 220 is parallel to Y-axis, is namely parallel to the bearing of trend of isolation part 23.Have one in second Department of Radiation 220 close and be positioned at the second bar shaped fluting 220h on rectangular portion 220b, and the second bar shaped fluting 220h departs from the symmetrical centre of rectangular portion 220b too away from right-angled trapezium portion 220a.The bearing of trend of the second bar shaped fluting 220h is parallel with the upper base of right-angled trapezium portion 220a, namely perpendicular to the bearing of trend of isolation part 23.That is, in the present embodiment, the slot bearing of trend of 220h of the first bar shaped fluting 210h and the second bar shaped is mutually vertical.
First feeder line district is equipped with the first signal feed-in point 211, is electrically connected at L shape feeder line 212, first branched line 213 and first radial line 214 of the first signal feed-in point 211, wherein a L shape feeder line 212 is connected to the first Department of Radiation 210, and the first branched line 213 and the first radial line 214 lay respectively at two opposition sides of a L shape feeder line 212.
Specifically, a L shape feeder line 212 comprises the first line segment 212a and the second line segment 212b, and the first above-mentioned signal feed-in point 211 is positioned at a wherein end of the first line segment 212a.In addition, wherein one end of the second line segment 212b is connected to the other end of described first line segment 212a and forms described turning point 212c.Further, a L shape feeder line 212 is connected to the first Department of Radiation 210 with the other end of the second line segment 212b, and wherein the bearing of trend of the second line segment 212b is perpendicular to the bearing of trend of described first line segment 212a.
First branched line 213 is connected to the turning point 212c of a described L shape feeder line 212.First branched line 213 has linkage section 213a and straightway 213b, and its middle connecting segment 213a is connected between turning point 212c and straightway 213b, and straightway 213b extends towards the direction away from the first Department of Radiation 210.In the present embodiment, the live width of linkage section 213a is the live width being less than straightway 213b.In addition, in the present embodiment, straightway 213b extends along X-direction towards isolation part 23, but straightway 213b does not contact isolation part 23, but keeps a preset distance with isolation part 23.
First radial line 214 is connected to a described L shape feeder line 212 and described first Department of Radiation 210.Specifically, first radial line 214 is arranged in the breach that a L shape feeder line 212 and the first Department of Radiation 210 define jointly, and form the first gap 215 between the first radial line 214 and a described L shape feeder line 212, and form the second gap 216 between the first radial line 214 and the first Department of Radiation 210.In the present embodiment, the first gap 215 has identical opening direction with the second gap 216, and the opening direction in the first gap 215 is haply perpendicular to the bearing of trend of the first bar shaped fluting 210h.
Second feeder line district and above-mentioned first feeder line district have similar structure, be equipped with secondary signal load point 221 too, be electrically connected at the 2nd L shape feeder line 222, second branched line 223 and the second radial line 224 of secondary signal load point 221, wherein the 2nd L shape feeder line 222 is connected to the second Department of Radiation 220, and the second branched line 223 and the second radial line 224 are two opposition sides laying respectively at the 2nd L shape feeder line 222.
In addition, the structure of the 2nd L shape feeder line 222 and a L shape feeder line 212, with similar relative to the configuration mode of the second Department of Radiation 220, is not repeated at this.What illustrate is, in order to make the first signal feed-in point 211 orthogonal with the signal feed-in direction of secondary signal load point 221, first line segment 222a and the bearing of trend of the first line segment 212a of a L shape feeder line 212 of the 2nd L shape feeder line 222 are mutually vertical, thus make the main electrical current direction of a L shape feeder line 212 mutually vertical with the main electrical current direction of the 2nd L shape feeder line 222.Accordingly, the first antenna element 21 can have orthogonal characteristic with the second antenna element 22 radiation polarization direction in space.
In addition, the structure of the second branched line 223 and the second radial line 224 and relative to the second Department of Radiation 220 configuration mode all respectively with the structure of the first branched line 213 and the first radial line 214 and similar relative to the configuration mode of the first Department of Radiation 210, do not repeated at this.
Illustrate, the straightway 223b of the second branched line 223 is along Y direction, is namely parallel to the bearing of trend of isolation part 23, extends away from the second Department of Radiation 220.But the straightway 223b of the second branched line 223 does not touch the edge of antenna substrate 2, but and the edge of antenna substrate 2 to be separated by a preset distance.
Please refer to Fig. 2 A, Fig. 2 A is the curve chart of obtained the at different frequencies reflection loss (Return Loss) of the first antenna element of the application's dual polarized antenna.As shown in Figure 2 A, the reflected wave of the first antenna element 21 and the ratio of incident wave is shown.The reflection coefficient showed in the frequency range of 1.4GHz to 1.95GHz through the first antenna element 21 and show whether the first antenna element 21 meets industry requirement at the loss value of this frequency range, to prove that antenna can operate in this special frequency channel really.The lower expression antenna-reflected of reflection loss is less, shows its radiant power larger.After the structure defined the dual polarized antenna of the embodiment of the present application is tested, result demonstrates the reflection loss value that the first antenna element 21 obtains respectively under the data of 1.44GHz, 1.70GHz and 1.95GHz tri-Frequency points A1, B1, C1, is about-6.36dB ,-6.72dB ,-11.43dB respectively.
Please refer to Fig. 2 B, it is the curve chart of obtained the at different frequencies reflection loss of the second antenna element of the application's dual polarized antenna.As shown in Figure 2 B, the reflected wave of the second antenna element 22 and the ratio of incident wave is shown.As mentioned above, the reflection coefficient showed in the frequency range of 1.4GHz to 1.95GHz through the second antenna element 22 and show whether the second antenna element 22 meets industry requirement at the loss value of this frequency range, to prove that antenna can operate in this special frequency channel really.After the structure defined the dual polarized antenna of the embodiment of the present application is tested, result demonstrates the reflection loss value that the second antenna element 22 obtains respectively under the data of 1.44GHz, 1.70GHz and 1.95GHz tri-Frequency points A2, B2, C2, is about-10.73dB ,-8.36dB ,-11.16dB respectively.
Fig. 2 C is the curve chart of obtained the at different frequencies reflection loss in the isolation part of the application's all frequency bands antenna.As shown in Figure 2 C, the reflected wave of isolation part 23 and the ratio of incident wave is shown.The reflection coefficient showed in 1.4GHz to 1.95GHz frequency range through isolation part 23 and draw the loss value of isolation part 23 in this frequency range.The structure that all frequency bands antenna of the embodiment of the present application defines is tested, and result demonstrates the reflection loss value that isolation part 23 obtains respectively under the data of 1.44GHz, 1.70GHz and 1.95GHz tri-Frequency points A3, B3, C3, be about-34.27dB ,-28.17dB ,-22.10dB respectively.
The curve chart of the first antenna element 21 that Fig. 3 A is the application's all frequency bands antenna and the radiation efficiency that the second antenna element 22 obtains respectively in 1.41GHz to 1.50GHz band limits.As shown in Figure 3A, the structure that the dual polarized antenna of the embodiment of the present application defines is tested, and result demonstrates the radiation efficiency curve E1 that the first antenna element 21 obtains, maximum radiation efficiency M1 is had at 1.41GHz, and the radiation efficiency curve E2 that the second antenna element 22 obtains, maximum radiation efficiency M2 is had greatly, wherein M1 about 59% about 1.45GHz, and M2 about 54%.
The curve chart of the first antenna element 21 that Fig. 3 B is the application's all frequency bands antenna and the radiation efficiency that the second antenna element 22 obtains respectively in 1.66GHz to 1.80GHz band limits.As shown in Figure 3 B, the structure that the dual polarized antenna of the embodiment of the present application defines is tested, and result demonstrates the radiation efficiency curve E1 that the first antenna element 21 obtains, maximum radiation efficiency M3 is had at 1.75GHz, and the radiation efficiency curve E2 that the second antenna element 22 obtains, also be have maximum radiation efficiency M4 about 1.75GHz greatly, wherein M3 about 78%, and M2 about 79%.
The curve chart of the first antenna element 21 that Fig. 3 C is the application's all frequency bands antenna and the radiation efficiency that the second antenna element 22 obtains respectively in 1.81GHz to 2.00GHz band limits.As shown in Figure 3 C, the structure that the dual polarized antenna of the embodiment of the present application defines is tested, and result demonstrates the radiation efficiency curve E1 that the first antenna element 21 obtains, maximum radiation efficiency M5 is had at 1.95GHz, and the radiation efficiency curve E2 that the second antenna element 22 obtains, also be have maximum radiation efficiency M6 about 1.95GHz greatly, wherein M3 about 76%, and M2 about 77%.
Fig. 4 A to Fig. 4 C be the first antenna element 21 of the application's dual polarized antenna when operating in different frequency respectively at the radiation pattern schematic diagram of X-Z plane, Y-Z plane and X-Y plane.Specifically, Fig. 4 A is the radiation pattern of the first antenna element 21 in X-Z plane, and Fig. 4 B is the radiation pattern of the first antenna element 21 in Y-Z plane, and Fig. 4 C is the radiation pattern of the first antenna element 21 at X-Y plane.Refer to Fig. 4 A to Fig. 4 C, and coordinate shown in Figure 1A and Figure 1B, according to the coordinate direction defined in Figure 1A and Figure 1B, the radiation pattern that Fig. 4 A to Fig. 4 C shows when the first antenna element 21 operates in 1450MHz, 1750MHz and 1950MHz is respectively F11, F12 and F13 at the measurement curve of X-Z plane, Y-Z plane and X-Y plane.Can find out by Fig. 4 A to Fig. 4 C, under the frequency of operation that 1450MHz, 1750MHz and 1950MHz tri-is different, the emittance of the first antenna element 21 is the normal directions (i.e. positive Z-direction) concentrating on antenna substrate 2.
Fig. 5 A to Fig. 5 C be the second antenna element 22 of the application's dual polarized antenna when operating in different frequency respectively at the radiation pattern schematic diagram of X-Z plane, Y-Z plane and X-Y plane.Specifically, Fig. 5 A is the radiation pattern of the second antenna element 22 in X-Z plane, and Fig. 5 B is the radiation pattern of the second antenna element 22 in Y-Z plane, and Fig. 4 C is the radiation pattern of the second antenna element 22 at X-Y plane.Refer to Fig. 5 A to Fig. 5 C, and coordinate shown in Figure 1A and Figure 1B, according to the coordinate direction defined in Figure 1A and Figure 1B, the radiation pattern that Fig. 5 A to Fig. 5 C shows when the second antenna element 22 operates in 1450MHz, 1750MHz and 1950MHz is respectively F21, F22 and F23 at the measurement curve of X-Z plane, Y-Z plane and X-Y plane.Can find out by Fig. 5 A to Fig. 5 C, under the frequency of operation that 1450MHz, 1750MHz and 1950MHz tri-is different, the emittance of the second antenna element 22 is also the normal direction (i.e. positive Z-direction) concentrating on antenna substrate 2.
The curve chart of the antenna gain obtained under the first antenna list 21 that Fig. 6 A is the application's dual polarized antenna and the different frequency of the second antenna element 22 respectively in 1.4GHz to 1.5GHz frequency band.As shown in Figure 6A, the structure that the dual polarized antenna of the embodiment of the present application defines is tested, and result demonstrates antenna gain (antenna gain) the curve G1 that the first antenna element 21 obtains, at 1.40GHz, there is maximum yield value P1.In addition, the antenna gain curve G2 that the second antenna element 22 obtains, has maximum yield value P2 at about 1.45GHz.The about 5.1dBi of maxgain value P1 of the first antenna element 21, and the about 4.9dBi of maxgain value P2 of the second antenna element 22.
The curve chart of the antenna gain obtained under the first antenna list 21 that Fig. 6 B is the application's dual polarized antenna and the different frequency of the second antenna element 22 respectively in 1.65GHz to 1.80GHz frequency band.As shown in Figure 6B, the structure that the dual polarized antenna of the embodiment of the present application defines is tested, and result demonstrates antenna gain (antenna gain) the curve G1 that the first antenna element 21 obtains, at 1.75GHz, there is maximum yield value P3.In addition, the antenna gain curve G2 that the second antenna element 22 obtains, has maximum yield value P4 at about 1.75GHz.The about 7.7dBi of maxgain value P3 of the first antenna element 21, and the about 7.3dBi of maxgain value P4 of the second antenna element 22.
The curve chart of the antenna gain obtained under the first antenna list 21 that Fig. 6 C is the application's dual polarized antenna and the different frequency of the second antenna element 22 respectively in 1.80GHz to 2.0GHz frequency band.As shown in Figure 6 C, the structure that the dual polarized antenna of the embodiment of the present application defines is tested, and result demonstrates antenna gain (antenna gain) the curve G1 that the first antenna element 21 obtains, at 1.95GHz, there is maximum yield value P5.In addition, the antenna gain curve G2 that the second antenna element 22 obtains, has maximum yield value P6 at about 1.95GHz.The about 7.3dBi of maxgain value P5 of the first antenna element 21, and the about 5.1dBi of maxgain value P6 of the second antenna element 22.
In sum, in the embodiment of the present application, two antenna elements have the pattern of particular design, and by making two antenna elements offset one from another in opposition side, isolation part two setting, demand when making the antenna gain of dual polarized antenna and radiation efficiency all can meet application.Therefore, the dual polarized antenna of the embodiment of the present application is applicable in long evolving system or other communication systems, and can operate in the frequency band of 1.4GHz to 1.95GHz.
The foregoing is only the better possible embodiments of the application, non-the scope of the claims therefore limiting to the application, therefore the equivalence techniques change of such as using present specification and accompanying drawing content to do, be all contained in the protection range of the application.
Claims (10)
1. a dual polarized antenna, is characterized in that, described dual polarized antenna comprises:
One ground connection substrate; And
One antenna substrate, there is a upper surface and a lower surface with the setting opposite each other of described upper surface, the described lower surface of described antenna substrate is in the face of described ground connection substrate, described antenna substrate and described ground connection substrate separated from one another, wherein said antenna substrate comprises an isolation part and at least two and to be arranged on the other antenna element in two opposition sides of described isolation part to miss one another relative to described isolation part, at least two described antenna elements electrical isolation and there is different polarised directions each other, described in each, antenna element at least comprises:
One Department of Radiation, described Department of Radiation is polygon, and described Department of Radiation has a bar shaped fluting closed; And
One feeder line district, by the wherein side being arranged at described Department of Radiation, described feeder line district is equipped with a signal feed-in point, and is electrically connected at the L shape feeder line of described signal feed-in point, a branched line and a radial line, wherein said L shape feeder line is connected to described Department of Radiation, and described branched line and described radial line lay respectively at two opposition sides of described L shape feeder line, wherein said branched line is connected to a turning point of described L shape feeder line, and described radial line is connected to described L shape feeder line and described Department of Radiation.
2. dual polarized antenna as claimed in claim 1, wherein said L shape feeder line comprises:
One first line segment, described signal feed-in point is positioned at a wherein end of described first line segment; And
One second line segment, wherein one end of described second line segment is connected to the other end of described first line segment and forms described turning point, and the other end of described second line segment is connected to described Department of Radiation, the bearing of trend of wherein said second line segment is perpendicular to the bearing of trend of described first line segment.
3. dual polarized antenna as claimed in claim 2, wherein said radial line is arranged in the breach that described L shape feeder line and described Department of Radiation define jointly, and form one first gap between described radial line and described L shape feeder line, and form one second gap between described radial line and described Department of Radiation.
4. dual polarized antenna as claimed in claim 3, wherein said first gap has identical opening direction with described second gap, and the opening direction in described first gap is haply perpendicular to the bearing of trend that described bar shaped is slotted.
5. dual polarized antenna as claimed in claim 4, the described bar shaped fluting of wherein said antenna element has with described isolation part the bearing of trend paralleled, and the described bar shaped fluting of antenna element described in another has perpendicular bearing of trend with described isolation part.
6. dual polarized antenna as claimed in claim 1, wherein said branched line has a linkage section and a straightway, and wherein said linkage section is connected between described turning point and described straightway, and described straightway extends towards the direction away from described Department of Radiation.
7. dual polarized antenna as claimed in claim 1, wherein said at least two antenna elements have identical pattern.
8. dual polarized antenna as claimed in claim 1, wherein antenna element described in is relative to antenna element 90-degree rotation described in another.
9. dual polarized antenna as claimed in claim 1, wherein said Department of Radiation comprises a rectangular portion and a right-angled trapezium portion, the upper base in wherein said right-angled trapezium portion is parallel with the bearing of trend that described bar shaped is slotted, and described bar shaped fluting to be positioned in described rectangular portion and to depart from the symmetrical centre of described rectangular portion.
10. dual polarized antenna as claimed in claim 1, the spacing between wherein said antenna substrate and described ground connection substrate is between 6mm to 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420590444.0U CN204156084U (en) | 2014-10-13 | 2014-10-13 | Dual polarized antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420590444.0U CN204156084U (en) | 2014-10-13 | 2014-10-13 | Dual polarized antenna |
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| Publication Number | Publication Date |
|---|---|
| CN204156084U true CN204156084U (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420590444.0U Expired - Fee Related CN204156084U (en) | 2014-10-13 | 2014-10-13 | Dual polarized antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111527646A (en) * | 2017-12-28 | 2020-08-11 | 株式会社村田制作所 | Antenna array and antenna module |
| CN113659328A (en) * | 2021-09-08 | 2021-11-16 | 耀登电通科技（昆山）有限公司 | Dual-polarized antenna structure |
| TWI778889B (en) * | 2021-11-05 | 2022-09-21 | 立積電子股份有限公司 | Radar device |
-
2014
- 2014-10-13 CN CN201420590444.0U patent/CN204156084U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111527646A (en) * | 2017-12-28 | 2020-08-11 | 株式会社村田制作所 | Antenna array and antenna module |
| CN111527646B (en) * | 2017-12-28 | 2021-08-03 | 株式会社村田制作所 | Antenna array and antenna module |
| CN113659328A (en) * | 2021-09-08 | 2021-11-16 | 耀登电通科技（昆山）有限公司 | Dual-polarized antenna structure |
| TWI778889B (en) * | 2021-11-05 | 2022-09-21 | 立積電子股份有限公司 | Radar device |
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