CN210074152U - 0mm headroom cell-phone antenna - Google Patents
0mm headroom cell-phone antenna Download PDFInfo
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- CN210074152U CN210074152U CN201921019929.3U CN201921019929U CN210074152U CN 210074152 U CN210074152 U CN 210074152U CN 201921019929 U CN201921019929 U CN 201921019929U CN 210074152 U CN210074152 U CN 210074152U
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- connection point
- headroom
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Abstract
The utility model discloses a 0mm headroom cell-phone antenna, including first irradiator, second irradiator and ground plate, first irradiator and second irradiator are all installed on the ground plate, the effective headroom more than or equal to 0mm of first irradiator and second irradiator in ground plate projection area, the interval of first irradiator and second irradiator is greater than 0 mm; the first radiator is provided with a first electrical connection point and a second electrical connection point, the first electrical connection point is an antenna feed point, and the second electrical connection point is an antenna grounding point or an antenna switch access point; the second radiator is provided with a third electrical connection point and a fourth electrical connection point, and the third electrical connection point and the fourth electrical connection point are antenna grounding points or antenna switch access points. The utility model is used for avoid the influence each other between two independent antennas.
Description
Technical Field
The utility model relates to an antenna technology field, concretely relates to 0mm headroom cell-phone antenna.
Background
With the development of the mobile phone industry, the technologies such as a comprehensive screen, a bang screen, a water drop screen and a curved screen are available, the using space of the antenna is less and less, the traditional single antenna design is difficult to cover the required frequency band, a multi-antenna design scheme is provided, and different antennas are arranged at different positions of the mobile phone to meet the requirements of the low-frequency band and the medium-frequency band of the antenna respectively. Due to the limited size of the mobile phone terminal, the small distance between different antennas, and the mutual influence between different antennas, the performance of the antenna is seriously reduced, and the antenna designer is very worried.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem to not enough in the background art, provide a 0mm headroom cell-phone antenna that can solve.
In order to solve the technical problem, the technical scheme of the utility model is that: a0 mm clearance mobile phone antenna comprises a first radiator, a second radiator and a ground plate, wherein the first radiator and the second radiator are both arranged on the ground plate, the effective clearance of the first radiator and the second radiator in a projection area of the ground plate is more than or equal to 0mm, and the distance between the first radiator and the second radiator is more than 0 mm; the first radiator is provided with a first electrical connection point and a second electrical connection point, the first electrical connection point is an antenna feed point, and the second electrical connection point is an antenna grounding point or an antenna switch access point; the second radiator is provided with a third electrical connection point and a fourth electrical connection point, and the third electrical connection point and the fourth electrical connection point are antenna grounding points or antenna switch access points.
Further, the first radiator is a trace in the form of an IFA or a PIFA, and the second radiator is a trace in the form of an IFA, a PIFA or a monopole.
Further, the effective height of the first radiator and the second radiator is more than 4 mm.
Further, the sum of the lengths of the first radiator and the second radiator is more than 65 mm.
Further, the first radiator is provided with an L-shaped first antenna end, and the second radiator is provided with an L-shaped second antenna end.
Further, the first radiator and the second radiator each include a side structure and a top structure.
Further, the ground plate is a small plate or a whole large plate, and the first radiator and the second radiator are mounted on the ground plate to form an antenna structure.
The utility model discloses the beneficial effect who realizes mainly has following several: the first radiator and the second radiator are arranged on the ground plate to form an antenna structure, the effective clearance of the first radiator and the second radiator in the projection area of the ground plate is more than or equal to 0mm, the distance between the first radiator and the second radiator is more than 0mm, and the normal signal radiation and reception of the antenna under the clearance of 0mm can be realized; the second radiator is used as a coupling path of the first radiator, and because the two radiators of the antenna structure are two parts of one antenna, unlike the structure of the existing two independent antennas, the antenna structure can effectively avoid the interference between the two antennas, the problems of mutual influence and poor isolation when the independent distance of the existing two antennas is close are effectively solved, and even if the clearance distance between the first radiator and the second radiator is extremely small, the problem of isolation does not exist; the radiation function of the two antennas is realized through one antenna; additionally, the utility model discloses an antenna structure can also reduce Cable line or microstrip line's use, can simplify the structure of antenna, reduces the cost of antenna.
Drawings
Fig. 1 is a schematic plan view of a 0mm headroom mobile phone antenna according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a 0mm headroom mobile phone antenna according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a standing wave comparison between a 0mm headroom mobile phone antenna and two independent antenna structures according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating the comparison of the efficiency between the 0mm clearance mobile phone antenna and two sets of independent antenna structures in the first embodiment of the present invention.
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar parts; the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent.
Detailed Description
To facilitate understanding for those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and examples.
Example one
Referring to fig. 1-4, a 0mm headroom mobile phone antenna can be disposed at the bottom of a mobile phone. The 0mm clearance mobile phone antenna comprises a first radiator 1, a second radiator 2 and a ground plate 3, wherein the first radiator 1 and the second radiator 2 are fixed on the ground plate 3, the effective clearance of the first radiator 1 and the second radiator 2 in the projection area of the ground plate 3 is more than or equal to 0mm and can be set to 0mm, namely the first radiator 1 and the second radiator 2 are fully distributed with a metal layer in the projection area of the ground plate 3; a clearance area larger than 0mm may also be set, that is, the first radiator 1 and the second radiator 2 reserve a certain width in the projection area of the ground plate 3, and no metal layer is disposed, for example, a clearance area with a width of 1mm to 2mm is set, which may be specifically selected according to the height of the antenna. The first radiator 1 is provided with a first electrical connection point 11 and a second electrical connection point 12, and the first electrical connection point 11 is an antenna feed point 11 and is connected with a feed source; the second electrical connection point 12 is an antenna ground point or an antenna switch access point, and an antenna switch is used when a plurality of signal channels are provided, and can be directly grounded when only one signal channel is provided, and the antenna switch can be an antenna switch in the prior art. The second radiator 2 is provided with a third electrical connection point 21 and a fourth electrical connection point 22, the third electrical connection point 21 and the fourth electrical connection point 22 are antenna grounding points or antenna switch access points, the types of the third electrical connection point 21 and the fourth electrical connection point 22 can be specifically selected according to the number of signal channels, an antenna switch is adopted when a plurality of signal channels are provided, and direct grounding can be realized when only one signal channel is provided.
The second electrical connection point 12, the third electrical connection point 21, and the fourth electrical connection point 22 may be added with an antenna switch to meet a wider antenna bandwidth according to whether an actual debugging situation is needed, and after the antenna switch is added, the antenna switch may be modified and matched in different paths, so that the antenna resonant frequency offset may be changed, and different switch state combinations may cover the wider antenna bandwidth. The third electrical connection point 21 and the fourth electrical connection point 22 are preferably in the form of one ground and the other antenna switch.
The antenna structure of this embodiment is equivalent to changing two existing independent antenna structures into one antenna, where the first radiator 1 and the second radiator 2 are respectively equivalent to radiators of one independent antenna, but originally, two independent antenna feeds are changed into one feed point feed, and three feed points or antenna switch connection points are set at the same time, so that two parts form one antenna, and the second radiator 2 is used as a coupling path of the first radiator 1; because the two radiators of the antenna structure are two parts of one antenna, and the antenna structure is not similar to the structure of the existing two independent antennas, the problem of interference between the two antennas can be effectively avoided, the problem of poor isolation when the existing two antennas are close to each other is effectively solved, and even if the clearance distance between the first radiator 1 and the second radiator 2 is extremely small, the problem of isolation does not exist.
On the connection structure of the antenna, the ground plate 3 is a small plate or a whole large plate, if the ground plate 3 adopts a PCB small plate, only one Cable (coaxial line) is needed from the first radiator 1 and the second radiator 2 to the connection PA (Power Amplifier), compared with the original double-antenna structure, one Cable and two terminal buckling parts can be saved, and the PA does not need to design an independent shunt circuit; if the grounding plate 3 adopts a PCB whole large plate, the first radiator 1 and the second radiator 2 are connected with the PA and connected by a microstrip line, only one microstrip line needs to be designed for connection, compared with the existing double-antenna, the space of one microstrip line can be reduced or the cost of one shunt is reduced, and the PA does not need to design an independent shunt. Therefore, the structure of the antenna can be simplified, and the cost of the antenna can be reduced.
Referring to fig. 1 and 2, the first radiator 1 is a track in the form of a PIFA (Planar Inverted F-shaped Antenna) or an IFA (Inverted F Antenna), and the second radiator 2 is a track in the form of an IFA or a PIFA, IFA or a monopole. The first radiator 1 and the second radiator 2 both comprise side structures and top structures, the top structures are main radiation parts, the side structures are mainly used for connection, and the top structures are connected to the ground plate 3 through the side structures to achieve electrical and mechanical connection with the ground plate 3. The mobile phone antenna of this embodiment is a 4G antenna, and when the effective clearance of the first radiator 1 and the second radiator 2 in the projection area of the ground plate 3 is 0mm, the effective height of the first radiator 1 and the second radiator 2 may be set to be 4mm or more than 4mm, and the distance from the top structure of the radiator to the ground plate 3 is more than 4mm when the space allows. The sum of the lengths of the first radiator 1 and the second radiator 2 is more than 65mm, the antenna is installed at the bottom of the mobile phone, the width of the mobile phone is more than 65mm, and the side edge of the bottom of the mobile phone cannot be of a metal structure.
The first radiator 1 is used as a main antenna to mainly bear the low-high frequency and partial medium frequency of the antenna, the second radiator 2 is used as a coupling antenna to bear the medium frequency of the antenna, and the secondary resonance of the low frequency of the first radiator 1 falls on the medium frequency of the medium-frequency area combined with the medium frequency of the second radiator 2, so that the wide frequency range of the medium frequency band can be covered. Usually, the top structures of the first radiator 1 and the second radiator 2 are disposed on the same plane, the first radiator 1 has a terminal structure 14, and the first radiator 1 is juxtaposed with the second radiator 2, and the distance between the first radiator 1 and the second radiator 2 is greater than 0mm, and may be set to be 0.4mm to 2 mm. The first radiator 1 and the second radiator 2 may be in a line-shaped structure, or in an L-shaped structure, when the first radiator 1 and the second radiator 2 are in the L-shaped structure, an L-shaped first antenna terminal 13 is disposed on a side of the first radiator 1 away from the adjacent portions of the two radiators, an L-shaped second antenna terminal 23 is disposed on a side of the second radiator 2 away from the adjacent portions of the two radiators, and lengths of the first antenna terminal 13, the second antenna terminal 23, and the terminal structure 14 may be selected according to a radiation frequency band of the antenna; in this embodiment, a change in the length of the first antenna end 13 affects a change in the resonance at the low and medium frequencies, a change in the length of the second antenna end 23 affects a change in the resonance at the medium frequency of the antenna, and a change in the length of the end structure 14 affects a change in the resonance at the high frequency of the antenna, so that the lengths of the first antenna end 13, the second antenna end 23, and the end structure 14 can be adjusted as desired. The first antenna end 13 and the second antenna end 23 are arranged in an L-shaped structure, so that the length of the radiator can be increased, and the occupied space inside the mobile phone can be reduced.
Referring to fig. 3, fig. 3 is a standing wave diagram comparing two independent antenna structures with the antenna structure in this embodiment, the routing forms of the two independent antennas are respectively consistent with the routing of the first radiator 1 and the second radiator 2, the antenna frequency ranges are low frequency 900-1000Mhz, medium frequency 1750-2170Mhz, high frequency 2450-2650Mhz, the coverage frequency of the first independent antenna structure mainly includes low frequency and high frequency, and the coverage frequency of the second independent antenna structure mainly covers medium frequency; the antenna structure of the embodiment covers low, medium and high frequencies, and as can be seen from the standing wave comparison graph, two independent antennas respectively work in the frequency range covering low frequency, medium frequency and high frequency, while the antenna frequency of the embodiment can cover the frequency range of the two independent antennas, and can replace the two independent antenna structures.
Referring to fig. 4, fig. 4 is a comparison of radiation efficiency of two independent antenna structures and the antenna structure in this embodiment, and the routing forms of the two independent antennas are respectively consistent with the routing of the first radiator 1 and the second radiator 2, and it can be seen from the diagram that, in the low frequency and high frequency portions, the antenna in this embodiment is close to the two independent antenna structures in data; in the middle frequency band part, the antenna of the embodiment has obvious advantages, the efficiency of most frequency points is higher than 1dB, and the efficiency of peak frequency points is higher by about 3 dB.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. The utility model provides a 0mm headroom cell-phone antenna which characterized in that: the ground plate radiator comprises a first radiator (1), a second radiator (2) and a ground plate (3), wherein the first radiator (1) and the second radiator (2) are both installed on the ground plate (3), the effective clearance of the first radiator (1) and the second radiator (2) in the projection area of the ground plate (3) is more than or equal to 0mm, and the distance between the first radiator (1) and the second radiator (2) is more than 0 mm; the first radiator (1) is provided with a first electrical connection point (11) and a second electrical connection point (12), the first electrical connection point (11) is an antenna feed point, and the second electrical connection point (12) is an antenna ground point or an antenna switch access point; the second radiator (2) is provided with a third electrical connection point (21) and a fourth electrical connection point (22), and the third electrical connection point (21) and the fourth electrical connection point (22) are antenna grounding points or antenna switch access points.
2. The 0mm headroom handset antenna of claim 1, wherein: the first radiating body (1) is a wiring in an IFA or PIFA form, and the second radiating body (2) is a wiring in an IFA, PIFA or monopole form; the effective height of the first radiator (1) and the second radiator (2) is more than 4 mm.
3. The 0mm headroom handset antenna of claim 2, wherein: the sum of the lengths of the first radiator (1) and the second radiator (2) is more than 65 mm.
4. A 0mm headroom handset antenna according to any of claims 1-3, wherein: the first radiator (1) is provided with an L-shaped first antenna end (13), and the second radiator (2) is provided with an L-shaped second antenna end (23).
5. The 0mm headroom handset antenna of claim 4, wherein: the first radiator (1) and the second radiator (2) both comprise a side structure and a top structure.
6. The 0mm headroom handset antenna of claim 5, wherein: the ground plate (3) is a small plate or a whole large plate, and the first radiator (1) and the second radiator (2) are installed on the ground plate to form an antenna structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921019929.3U CN210074152U (en) | 2019-07-03 | 2019-07-03 | 0mm headroom cell-phone antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921019929.3U CN210074152U (en) | 2019-07-03 | 2019-07-03 | 0mm headroom cell-phone antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210074152U true CN210074152U (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921019929.3U Active CN210074152U (en) | 2019-07-03 | 2019-07-03 | 0mm headroom cell-phone antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210074152U (en) |
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2019
- 2019-07-03 CN CN201921019929.3U patent/CN210074152U/en active Active
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