PDS antenna and mobile terminal thereof

Abstract

The utility model provides a PDS antenna and a mobile terminal thereof, the PDS antenna comprises a first PDS antenna and a second PDS antenna, the first PDS antenna is arranged on the inner surface of a shell material, the second PDS antenna is arranged on the outer surface opposite to the inner surface of the shell material, and the first PDS antenna and the second PDS antenna are connected through a through hole of the shell material. The first PDS antenna is provided with a parasitic ground feed, a feed point, a ground feed point, a first gap and a second gap, the parasitic ground feed, the feed point and the ground feed point are used for being connected with a mainboard on the inner surface, the feed point is located between the parasitic ground feed and the ground feed point, the first gap is formed between the feed point and the ground feed point, and the second gap is located between the feed point and the ground feed point. And a second gap is arranged between the parasitic ground feed and the feed point, the second PDS antenna is provided with a third gap, and the lengths of the first gap, the second gap and the third gap are less than 0 and less than 5mm, so that resonance of three different frequency bands such as intermediate frequency, high frequency and ultrahigh frequency can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of antennas, in particular to a PDS antenna and a mobile terminal thereof. BACKGROUND

[0002] With the development of 5G mobile terminals, the demand for the number of antennas increases with the MIMO (Multiple-Input Multiple-Output) technology, while the internal layout of the mobile terminal is compact, and the increased devices squeeze the antenna clearance, and the antenna wiring area is limited. The bandwidth of the traditional PIFA antenna is small in the low frequency range, and it is difficult to meet the bandwidth of the medium frequency + high frequency + ultrahigh frequency, and further leads to poor antenna performance. CONTENT OF THE UTILITY MODEL

[0003] In view of this, the present application provides a PDS antenna and a mobile terminal thereof to solve the above problems.

[0004] The present application provides a PDS antenna, comprising a first PDS antenna and a second PDS antenna, the first PDS antenna is arranged on the inner surface of the shell material, the second PDS antenna is arranged on the outer surface opposite to the inner surface of the shell material, the first PDS antenna and the second PDS antenna are connected through the through hole of the shell material, the first PDS antenna has a parasitic ground feed, a feed point, a ground feed point, a first slot and a second slot, the parasitic ground feed, the feed point and the ground feed point are used to connect with the mainboard on the inner surface, the feed point is located between the parasitic ground feed and the ground feed point, the feed point and the ground feed point are provided with the first slot, the parasitic ground feed and the feed point are provided with the second slot, the second PDS antenna has a third slot, the length of the first slot, the second slot and the third slot is less than 0 and less than 5mm.

[0005] In some embodiments, the slot diameter of the first slot, the second slot and the third slot is greater than or equal to 0.5mm, and / or the height of the PDS antenna is at least greater than 2mm.

[0006] In some embodiments, the first PDS antenna comprises a first antenna section, a second antenna section and a third antenna section arranged in sequence along the length direction of the shell material and connected, a part region between the first antenna section and the second antenna section is provided with the first slit, a part region between the second antenna section and the third antenna section is provided with the second slit, the extension direction of the first antenna section and the second antenna section is perpendicular to the length direction of the shell material, the extension direction of the third antenna section is the same as the length direction of the shell material, and the extension length of the first antenna section and the second antenna section is greater than the extension length of the third antenna section.

[0007] In some embodiments, the second PDS antenna comprises a first sub-section and a second sub-section connected with the first sub-section, and a part region between the first sub-section and the second sub-section is provided with the third slit.

[0008] In some embodiments, the through hole comprises a first via, a second via and a third via arranged in sequence along the length direction of the shell material, the first via is located on a region provided with the first antenna section and the first sub-section, and is used for connecting the first antenna section and the first sub-section, the second via is located on a region provided with the second antenna section and the first sub-section, and is used for connecting the second antenna section and the first sub-section, and the third via is located on a region provided with the third antenna section and the second sub-section, and is used for connecting the third antenna section and the second sub-section.

[0009] In some embodiments, the length of the first PDS antenna and the length of the second PDS antenna are both less than 0 and less than 5 mm, the length of the first PDS antenna is used for controlling 2500-2700 MHz resonance and 3300-4200 MHz resonance, the length of the second PDS antenna is used for controlling 2110-2170 MHz resonance, the length of the first slit is used for controlling 3300-4200 MHz resonance, and the length of the second slit is used for controlling 2110-2170 MHz resonance.

[0010] In some embodiments, the length of the third antenna section and the length of the first sub-section are both less than 0 and less than 5 mm, the length of the third antenna section is used for controlling 2500-2700 MHz resonance, and the length of the first sub-section is used for controlling 3300-4200 MHz resonance.

[0011] In some embodiments, the PDS antenna further comprises a third PDS antenna connected with the second PDS antenna and extending from the outer surface to the side surface of the shell material.

[0012] In some embodiments, the third PDS antenna comprises a first part and a second part connected to the first part, a fourth gap is arranged between the first part and the second part, the fourth gap extends from the outer surface to the side of the shell material, and the fourth gap is in communication with the third gap.

[0013] The application also provides a mobile terminal comprising a shell material and a PDS antenna as described above, the PDS antenna is arranged on the inner surface and the outer surface of the shell material.

[0014] The application provides a PDS antenna and a mobile terminal thereof, the PDS antenna comprises a first PDS antenna and a second PDS antenna, the first PDS antenna is arranged on the inner surface of the shell material, the second PDS antenna is arranged on the outer surface opposite to the inner surface of the shell material, the first PDS antenna and the second PDS antenna are connected through a through hole of the shell material, the first PDS antenna has a parasitic ground feed, a feed point, a ground feed point, a first gap and a second gap, the parasitic ground feed, the feed point and the ground feed point are used to connect with a mainboard on the inner surface, the feed point is located between the parasitic ground feed and the ground feed point, the feed point and the ground feed point are provided with the first gap, the parasitic ground feed and the feed point are provided with the second gap, the second PDS antenna has a third gap, the lengths of the first gap, the second gap and the third gap are less than 0 and less than 5 mm, so that the resonance of three different frequency bands such as medium frequency, high frequency and ultrahigh frequency can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0016] Figure 1 is a first structure schematic diagram of a PDS antenna provided by the application and arranged on the inner surface of a shell material;

[0017] Figure 2 is a structure schematic diagram of a PDS antenna provided by the application and arranged on the outer surface of a shell material;

[0018] Figure 3 is a second structure schematic diagram of a PDS antenna provided by the application and arranged on the inner surface of a shell material;

[0019] Figure 4 is a frequency-return loss schematic diagram of a PDS antenna provided by the application.

[0020] REFERENCE SIGNS:

[0021] 10, PDS antenna; 20, shell material; 21, inner surface; 22, outer surface; 23, side surface; 24, first via hole; 25, second via hole; 26, third via hole; 100, first PDS antenna; 110, ground feed point; 120, feed point; 130, parasitic ground feed; 140, first slot; 150, second slot; 160, first antenna part; 170, second antenna part; 180, third antenna part; 200, second PDS antenna; 210, third slot; 220, first sub-part; 230, second sub-part; 300, third PDS antenna; 310, first part; 320, second part; 330, fourth slot. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application. In the case of no conflict, each of the described embodiments and technical features can be combined with each other.

[0023] In addition, the terms "first", "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly and specifically limited. In the description of the present application, the meaning of "several" is at least one, such as one, two, etc., unless otherwise explicitly and specifically limited.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the term "and / or" includes any and all combinations of one or more of the associated listed items. As used in this description, the terms "connect," "electrically connected," and "electrically connect" include any direct and indirect electrical or structural connection hand means. Therefore, if it is described herein that a first device is coupled / connected / electrically connected to a second device, it means that the first device can be directly electrically / structurally connected to the second device, or indirectly electrically / structurally connected to the second device through other devices or connection means.

[0025] The application provides a PDS antenna, which comprises a first PDS antenna and a second PDS antenna, the first PDS antenna is arranged on the inner surface of a shell material, the second PDS antenna is arranged on the outer surface opposite to the inner surface of the shell material, the first PDS antenna and the second PDS antenna are connected through a through hole of the shell material, the first PDS antenna has a parasitic ground feed, a feed point, a ground feed point, a first gap and a second gap, the parasitic ground feed, the feed point and the ground feed point are used for connecting a mainboard on the inner surface, the feed point is located between the parasitic ground feed and the ground feed point, the feed point and the ground feed point are provided with the first gap, and the parasitic ground feed and the feed point are provided with the second gap, the second PDS antenna has a third gap, the lengths of the first gap, the second gap and the third gap are less than 0 and less than 5 mm.

[0026] In the application, the parasitic ground feed, the feed point and the ground feed point used for connecting the mainboard are arranged on the first PDS antenna, the first gap between the feed point and the ground feed point and the second gap between the parasitic ground feed and the feed point are arranged on the first PDS antenna, meanwhile, the third gap is arranged on the second PDS antenna, and the lengths of the first gap, the second gap and the third gap are set to be less than 0 and less than 5 mm, so that the resonance of three different frequency bands such as medium frequency, high frequency and ultrahigh frequency can be realized by adjusting the lengths of the first gap, the second gap and the third gap, and the performance of the PDS antenna is improved while the cost is reduced.

[0027] Please refer to Figure 1 and Figure 2 , Figure 1 is a first structure schematic view of the PDS antenna arranged on the inner surface of the shell material provided in the application; Figure 2A structure schematic diagram of a PDS antenna provided by the application is arranged on the outer surface of a shell material. The application provides a PDS antenna 10, which comprises a first PDS antenna 100 and a second PDS antenna 200. The first PDS antenna 100 is arranged on the inner surface 21 of a shell material 20, and the second PDS antenna 200 is arranged on the outer surface 22 opposite to the inner surface 21 of the shell material 20. The first PDS antenna 100 and the second PDS antenna 200 are connected through a through hole of the shell material 20. The first PDS antenna 100 has a parasitic ground feed 130, a feed point 120, a ground feed point 110, a first slit 140 and a second slit 150. The parasitic ground feed 130, the feed point 120 and the ground feed point 110 are used to be connected with a mainboard on the inner surface 21. The feed point 120 is located between the parasitic ground feed 130 and the ground feed point 110. The feed point 120 and the ground feed point 110 are provided with the first slit 140. The parasitic ground feed 130 and the feed point 120 are provided with the second slit 150. The second PDS antenna 200 has a third slit 210. The lengths of the first slit 140, the second slit 150 and the third slit 210 are less than 0 and less than 5 mm.Specifically, the shell material 20 includes an inner surface 21, a side surface 23 and an outer surface 22 connected in sequence, the inner surface 21 and the outer surface 22 are oppositely arranged, the shell material 20 has a through hole communicating with the inner surface 21 and the outer surface 22, the shell material 20 has a top and a bottom oppositely arranged with the top, the direction from the top to the bottom is the length direction of the shell material 20, and the direction perpendicular to the length direction of the shell material 20 is the width direction of the shell material 20; the first PDS antenna 100 and the second PDS antenna 200 are arranged near the top of the shell material 20 and near one side of the side surface 23, wherein the first PDS antenna 100 is arranged on the inner surface 21 of the shell material 20, the second PDS antenna 200 is arranged on the outer surface 22, the through hole is located in the region where the first PDS antenna 100 and the second PDS antenna 200 are arranged, and the first PDS antenna 100 and the second PDS antenna 200 are connected through the through hole; the first PDS antenna 100 has a parasitic ground feed 130, a feed point 120, a ground feed point 110, a first slot 140 and a second slot 150, the ground feed point 110, the feed point 120 and the parasitic ground feed 130 are arranged in sequence from the top to the bottom, the parasitic ground feed 130, the feed point 120 and the ground feed point 110 are used to connect with the mainboard on the inner surface 21, the feed point 120 is located between the parasitic ground feed 130 and the ground feed point 110, the feed point 120 and the ground feed point 110 are provided with the first slot 140, the parasitic ground feed 130 and the feed point 120 are provided with the second slot 150, the second PDS antenna 200 has a third slot 210, the planar shape of the first slot 140 and the second slot 150 is similar to I-shaped, the planar shape of the third slot 210 is similar to anti-L-shaped, the length of the first slot 140, the second slot 150 and the third slot 210 is the extension length thereof, the extension direction of the first slot 140 and the second slot 150 is the same as the width direction of the shell material 20, and the length of the first slot 140, the second slot 150 and the third slot 210 can be 0.2mm, 0.6mm, 0.79mm, 1.3mm, 1.64mm, 2.45mm, 3.16mm, 4.56mm or 4.98mm, etc.

[0028] In the present application, by setting the parasitic ground feed 130 for connecting with the main board, the feed point 120 and the ground feed point 110 on the first PDS antenna 100, and setting the first slot 140 between the feed point 120 and the ground feed point 110 and the second slot 150 between the parasitic ground feed 130 and the feed point 120 on the first PDS antenna 100, and at the same time, setting the third slot 210 on the second PDS antenna 200 and setting the length of the first slot 140, the second slot 150 and the third slot 210 to be less than 0 and less than 5 mm, so that the resonance of three different frequency bands of medium frequency, high frequency and ultrahigh frequency can be realized by adjusting the length of the first slot 140, the second slot 150 and the third slot 210, without the need of using a switch to assist in adjusting, so as to improve the performance of the PDS antenna 10 while reducing the cost; By setting the PDS antenna 10 of the present application in this form, the performance requirements of multi-frequency operation can be met without setting a large number of antennas, reducing the occupied space of each functional antenna, so that the antenna is in a relatively free space, ensuring the performance of the antenna; In addition, through this design, the PDS antenna 10 can realize multi-frequency operation in a limited space, and at the same time, one frequency band does not affect the performance of the other frequency band, improving the antenna efficiency.

[0029] In an embodiment, the slot diameter of the first slot 140, the second slot 150 and the third slot 210 is greater than or equal to 0.5 mm, and / or the height of the PDS antenna 10 is at least greater than 2 mm. Specifically, the slot diameter direction of the first slot 140, the second slot 150 and the third slot 210 is perpendicular to the extension length direction of the first slot 140, the second slot 150 and the third slot 210, and the slot diameter of the first slot 140, the second slot 150 and the third slot 210 can be 0.51 mm, 0.57 mm, 0.64 mm, 0.71 mm, 0.86 mm, 0.97 mm, 1.32 mm, 1.56 mm or 2.46 mm, etc., and / or the height of the PDS antenna 10 can be 2 mm, 2.51 mm, 2.57 mm, 2.64 mm, 2.71 mm, 3.86 mm, 3.97 mm, 4.32 mm, 4.56 mm or 4.86 mm, etc. By setting the slot diameter of the first slot 140, the second slot 150 and the third slot 210 within this range, the resonance of the three different frequency bands can be adjusted, the adjustment accuracy is improved, and the antenna efficiency is further improved; By setting the height of the PDS antenna 10 within this range, the bandwidth can be increased, the radiation efficiency can be improved, the matching can be optimized, and the coupling interference can be reduced, so as to ensure the stable performance of the PDS antenna 10 in multiple frequency bands.

[0030] In an embodiment, the first PDS antenna 100 comprises a first antenna section 160, a second antenna section 170 and a third antenna section 180 arranged in sequence along the length direction of the shell material 20 and connected, a first gap 140 is arranged in the partial region between the first antenna section 160 and the second antenna section 170, a second gap 150 is arranged in the partial region between the second antenna section 170 and the third antenna section 180, the extension direction of the first antenna section 160 and the second antenna section 170 is perpendicular to the length direction of the shell material 20, the extension direction of the third antenna section 180 is the same as the length direction of the shell material 20, the extension length of the first antenna section 160 and the second antenna section 170 is greater than the extension length of the third antenna section 180, so that the multi-frequency operation can be realized, the resonances of the three different frequency bands are facilitated to be adjusted, the adjustment accuracy and the antenna efficiency are further improved, and the stable performance of the PDS antenna 10 in the multi-frequency bands is further ensured. Optionally, the first antenna section 160, the second antenna section 170 and the third antenna section 180 are arranged in sequence from the top to the bottom direction. Optionally, one end of the first antenna section 160 close to the inside of the shell material 20 is connected with one end of the second antenna section 170 close to the inside of the shell material 20, the first gap 140 is arranged between the part of the first antenna section 160 close to the side surface 23 of the shell material 20 and the part of the second antenna section 170 close to the side surface 23 of the shell material 20, and the first gap 140 extends to the side surface 23 from the end away from the inside of the shell material 20 and stops, that is, the first gap 140 extends to the junction of the inner surface 21 and the side surface 28. Optionally, the middle region of the second antenna section 170 is connected with the middle region of the third antenna section 180, the edge region of the second antenna section 170 connected on both sides of the middle region of the second antenna section 170 is arranged with the edge region of the third antenna section 180 connected on both sides of the middle region of the third antenna section 180, that is, the second gap 150 is composed of two parts, the second gap 150 is arranged in parallel with the first gap 140, and the end of the part of the second gap 150 away from the inside of the inner surface 21 is located at the junction of the inner surface 21 and the side surface 28, that is, the end of the second gap 150 away from the inside of the shell material 20 extends to the junction of the inner surface 21 and the side surface 28, so that the multi-frequency operation can be realized, the resonances of the three different frequency bands are facilitated to be adjusted, the adjustment accuracy and the antenna efficiency are further improved, and the stable performance of the PDS antenna 10 in the multi-frequency bands is further ensured.

[0031] In an embodiment, the second PDS antenna 200 comprises a first sub-portion 220 and a second sub-portion 230 connected with the first sub-portion 220, and a third gap 210 is arranged between the first sub-portion 220 and the second sub-portion 230, so that the multi-frequency operation can be realized, the resonances of the three different frequency bands are facilitated to be adjusted, the adjustment accuracy and the antenna efficiency are further improved, and the stable performance of the PDS antenna 10 in the multi-frequency bands is further ensured.

[0032] In an embodiment, the through hole comprises a first via 24, a second via 25 and a third via 26 arranged in sequence along the length direction of the shell material 20, the first via 24 is arranged on the region where the first antenna sub-portion 160 and the first sub-portion 220 are arranged, the first via 24 is used to connect the first antenna sub-portion 160 and the first sub-portion 220, the second via 25 is arranged on the region where the second antenna sub-portion 170 and the first sub-portion 220 are arranged, the second via 25 is used to connect the second antenna sub-portion 170 and the first sub-portion 220, the third via 26 is arranged on the region where the third antenna sub-portion 180 and the second sub-portion 230 are arranged, and the third via 26 is used to connect the third antenna sub-portion 180 and the second sub-portion 230, so that the multi-frequency operation can be realized, the resonances of the three different frequency bands are facilitated to be adjusted, the adjustment accuracy and the antenna efficiency are further improved, and the stable performance of the PDS antenna 10 in the multi-frequency bands is further ensured.

[0033] In an embodiment, the length of the first PDS antenna 100 and the length of the second PDS antenna 200 are both less than 0 and less than 5 mm, the length of the first PDS antenna 100 is used to control the 2500-2700 MHz resonance and the 3300-4200 MHz resonance, the length of the second PDS antenna 200 is used to control the 2110-2170 MHz resonance, the length of the first gap 140 is used to control the 3300-4200 MHz resonance, and the length of the second gap 150 is used to control the 2110-2170 MHz resonance, so that the multi-frequency operation can be realized, the resonances of the three different frequency bands are facilitated to be adjusted, the adjustment accuracy and the antenna efficiency are further improved, and the stable performance of the PDS antenna 10 in the multi-frequency bands is further ensured.

[0034] In an embodiment, the length of the third antenna sub-portion 180 and the length of the first sub-portion 220 are both less than 0 and less than 5 mm, the length of the third antenna sub-portion 180 is used to control the 2500-2700 MHz resonance, and the length of the first sub-portion 220 is used to control the 3300-4200 MHz resonance, so that the multi-frequency operation can be realized, the resonances of the three different frequency bands are facilitated to be adjusted, the adjustment accuracy and the antenna efficiency are further improved, and the stable performance of the PDS antenna 10 in the multi-frequency bands is further ensured.

[0035] In an embodiment, the PDS antenna 10 further comprises a third PDS antenna 300 connected with the second PDS antenna 200 and extending from the outer surface 22 to the side surface 23 of the shell material 20, so that the multi-frequency operation can be realized, the resonances of the three different frequency bands are facilitated to be adjusted, the adjustment accuracy and the antenna efficiency are further improved, and the stable performance of the PDS antenna 10 in the multi-frequency bands is further ensured.

[0036] Please refer to Figure 3 , Figure 3 is a second structural schematic diagram of the PDS antenna 10 provided by the present application and arranged on the inner surface 21 of the shell material 20. The third PDS antenna 300 comprises a first part 310 and a second part 320 connected with the first part 310, and a part of the region between the first part 310 and the second part 320 is provided with a fourth slit 330 extending from the outer surface 22 to the side surface 23 of the shell material 20, and the fourth slit 330 is in communication with the third slit 210, so that the multi-frequency operation can be realized, the resonances of the three different frequency bands are facilitated to be adjusted, the adjustment accuracy and the antenna efficiency are further improved, and the stable performance of the PDS antenna 10 in the multi-frequency bands is further ensured. The shape of the fourth slit 330 is L-shaped.

[0037] Please refer to Figure 4 , Figure 4 is a frequency-return loss schematic diagram of the PDS antenna 10 provided by the present application. It should be noted that, Figure 4 is a return loss (S22) curve of the PDS antenna 10, the horizontal axis is frequency (GHz), and the vertical axis is return loss (dB).

[0038] It can be seen from Figure 4 that the PDS antenna 10 provided by the present application works well at multiple frequencies, especially at 2.0 GHz, 3.0 GHz, 4.0 GHz and 5.0 GHz, all of which have a lower return loss, which means that it is a multi-frequency antenna suitable for multiple frequency band applications, and the return loss of the PDS antenna 10 remains at about -10 dB between multiple frequency points, showing certain broadband characteristics, especially between 2-6 GHz, there are multiple frequency points that meet the condition of return loss less than -10 dB. Therefore, the PDS antenna 10 provided by the present application has a good matching of the working frequency near 2.0 GHz, 3.0 GHz, 4.0 GHz and 5.0 GHz, and has good multi-frequency working performance. This means that the antenna can adapt to multiple frequency band applications, such as mobile communication, Wi-Fi and other wireless communication frequency bands.

[0039] Please refer to Table 1, which is the efficiency of the PDS antenna at different frequencies.

[0040] Table 1:

[0041] Frequency (Mhz) Efficiency (dB) Efficiency (%) 2100 -6.4 23％ 2120 -6.5 23％ 2140 -6.8 21％ 2160 -7.5 18％ 2180 -7.6 17％ AVG -6.9 20％ 2500 -8.1 15％ 2520 -7.6 17％ 2540 -7.4 18％ 2560 -7.5 18％ 2580 -7.6 17％ 2600 -7.5 18％ 2620 -7.3 19％ 2640 -7.5 18％ 2660 -7.9 16％ 2680 -8.2 15％ 2700 -8.7 13％ AVG -7.8 17％ 3300 -6.9 20％ 3340 -6.2 24％ 3380 -6.4 23％ 3420 -6.8 21％ 3460 -6.5 22％ 3500 -6.7 22％ 3540 -7.9 16％ 3580 -6.9 21％ 3620 -5.3 29％ 3660 -6.3 24％ 3700 -6.1 24％ 3740 -6.0 25％ 3780 -5.8 26％ 3800 -5.8 27％ AVG -6.4 23％

[0042] The efficiency of the antenna at different frequencies in Table 1 includes the efficiency in dB value and percentage representation. From Table 1, it can be seen that in the 2100-2180MHz (about 2.1GHz) frequency band, the efficiency (dB) is -6.4dB to -7.6dB, the average value is -6.9dB, the efficiency (%) is the highest 23%, the lowest 17%, and the average efficiency is 20%; in the 2500-2700MHz (about 2.5-2.7GHz) frequency band, the efficiency (dB) is -7.3dB to -8.7dB, the average value is -7.8dB, the efficiency (%) is the highest 19%, the lowest 13%, and the average efficiency is 17%; in the 3300-3800MHz (about 3.3-3.8GHz) frequency band, the efficiency (dB) is -6.0dB to -6.9dB, the average value is -6.4dB, the efficiency (%) is the highest 29%, the lowest 16%, and the average efficiency is 23%. It can be seen that the efficiency of the PDS antenna 10 of the present application is relatively high, especially in the 3.3-3.8GHz frequency band, the efficiency is significantly higher than that in the other two frequency bands (2.1GHz and 2.5-2.7GHz frequency bands), and in the vicinity of 3600MHz, the efficiency of the frequency band is the best, and the average efficiency reaches 23%

[0043] The present application also provides a mobile terminal, which comprises a shell material 20 and the PDS antenna 10 provided by the present application, and the PDS antenna 10 is arranged on the inner surface 21 and the outer surface 22 of the shell material 20.

[0044] In the present application, by using the PDS antenna 10 provided in the present application in the mobile terminal, so that by setting the parasitic ground feed 130, the feed point 120 and the ground feed point 110 for connecting with the main board on the first PDS antenna 100, and setting the first slot 140 between the feed point 120 and the ground feed point 110 and the second slot 150 between the parasitic ground feed 130 and the feed point 120 on the first PDS antenna 100, at the same time, setting the third slot 210 on the second PDS antenna 200 and setting the length of the first slot 140, the second slot 150 and the third slot 210 to be less than 0 and less than 5mm, so that the resonance of three different frequency bands such as intermediate frequency, high frequency and ultrahigh frequency can be realized by adjusting the length of the first slot 140, the second slot 150 and the third slot 210, without using the switch to assist the adjustment, so as to improve the performance of the PDS antenna 10 while reducing the cost, thereby improving the performance of the mobile terminal; by setting the PDS antenna 10 of the present application in this form, the performance requirements of multi-frequency operation can be met without setting a large number of antennas, reducing the space occupied by each function of the antenna, so that the antenna is in a relatively free space, ensuring the performance of the antenna and the performance of the mobile terminal; in addition, the PDS antenna 10 through this design can realize multi-frequency operation in limited space, and at the same time, one frequency band works without affecting the performance of another frequency band, improving the antenna efficiency.

[0045] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation made by using the content of the present application specification and drawings, such as the mutual combination of technical features between embodiments, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A PDS antenna, characterized by, The first PDS antenna and the second PDS antenna are provided on the inner surface and the outer surface of the shell material respectively, and are connected through the through hole of the shell material. The first PDS antenna has a parasitic ground feed, a feed point, a ground feed point, a first slot and a second slot. The parasitic ground feed, the feed point and the ground feed point are used to connect with the mainboard on the inner surface. The feed point is located between the parasitic ground feed and the ground feed point. The feed point and the ground feed point are provided with the first slot. The parasitic ground feed and the feed point are provided with the second slot. The second PDS antenna has a third slot. The lengths of the first slot, the second slot and the third slot are less than 0 and less than 5 mm.

2. The PDS antenna of claim 1, wherein, The groove diameters of the first slot, the second slot and the third slot are greater than or equal to 0.5 mm, and / or the height of the PDS antenna is at least greater than 2 mm.

3. The PDS antenna of claim 1, wherein, The first PDS antenna includes a first antenna part, a second antenna part and a third antenna part arranged and connected in sequence along the length direction of the shell material. The first slot is arranged in the partial area between the first antenna part and the second antenna part. The second slot is arranged in the partial area between the second antenna part and the third antenna part. The extension directions of the first antenna part and the second antenna part are perpendicular to the length direction of the shell material. The extension direction of the third antenna part is the same as the length direction of the shell material. The extension lengths of the first antenna part and the second antenna part are greater than the extension length of the third antenna part.

4. The PDS antenna of claim 3, wherein, The second PDS antenna includes a first subpart and a second subpart connected with the first subpart. The third slot is arranged in the partial area between the first subpart and the second subpart.

5. The PDS antenna of claim 4, wherein, The through hole includes a first via hole, a second via hole and a third via hole arranged in sequence along the length direction of the shell material. The first via hole is located on the area where the first antenna part and the first subpart are arranged. The first via hole is used to connect the first antenna part and the first subpart. The second via hole is located on the area where the second antenna part and the first subpart are arranged. The second via hole is used to connect the second antenna part and the first subpart. The third via hole is located on the area where the third antenna part and the second subpart are arranged. The third via hole is used to connect the third antenna part and the second subpart.

6. The PDS antenna of claim 4, wherein, The length of the first PDS antenna and the length of the second PDS antenna are both less than 0 and less than 5 mm, the length of the first PDS antenna is for controlling 2500-2700 MHz resonance and 3300-4200 MHz resonance, the length of the second PDS antenna is for controlling 2110-2170 MHz resonance, the length of the first slot is for controlling 3300-4200 MHz resonance, and the length of the second slot is for controlling 2110-2170 MHz resonance.

7. The PDS antenna of claim 6, wherein, The length of the third antenna section and the length of the first sub-section are both less than 0 and less than 5 mm, the length of the third antenna section is for controlling 2500-2700 MHz resonance, and the length of the first sub-section is for controlling 3300-4200 MHz resonance.

8. The PDS antenna of claim 4, wherein, The PDS antenna further comprises a third PDS antenna connected with the second PDS antenna and extending from the outer surface to the side of the shell material.

9. The PDS antenna of claim 8, wherein, The third PDS antenna comprises a first section and a second section connected with the first section, a partial area between the first section and the second section is provided with a fourth slot, the fourth slot extends from the outer surface to the side of the shell material, and the fourth slot is in communication with the third slot.

10. A mobile terminal, characterized by A shell material and a PDS antenna according to any one of claims 1-9 are provided on the inner surface and the outer surface of the shell material.

Images