CN111668588B - Antenna device applied to handheld mobile terminal and switching method - Google Patents
Antenna device applied to handheld mobile terminal and switching method Download PDFInfo
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- CN111668588B CN111668588B CN201910175370.1A CN201910175370A CN111668588B CN 111668588 B CN111668588 B CN 111668588B CN 201910175370 A CN201910175370 A CN 201910175370A CN 111668588 B CN111668588 B CN 111668588B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/328—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors between a radiating element and ground
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/378—Combination of fed elements with parasitic elements
- H01Q5/385—Two or more parasitic elements
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Abstract
The invention discloses an antenna device and a switching method applied to a handheld mobile terminal, which solve the problem that the handheld effect has great influence on the antenna signal of the handheld mobile terminal, and the antenna device comprises: the feed-in antenna is in feed connection with a multi-frequency signal source in the mobile terminal; at least two parasitic antennas, which are located at two end sides of the feed-in antenna and form a coupling gap with the feed-in antenna, wherein the feed-in antenna can be coupled with the parasitic antennas through the coupling gap to generate a resonant signal; each parasitic antenna is connected with a reference ground through a tuning switch, and the tuning switch is used for controlling the feed antenna to be coupled with the parasitic antenna to generate a resonant signal to be fed into the antenna. According to the invention, through the multi-branch switching design of the antenna and the selection of the working parasitic antenna, the position where the hand absorbs the strongest signal is avoided, and the effect of the hand on the antenna performance is minimized under the left-hand and right-hand holding scenes.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an antenna apparatus and a switching method for a handheld mobile terminal.
Background
With the development of the intelligent mobile terminal technology, the mobile phone becomes a main terminal for bearing the interactive information of the consumer, and based on the individual requirements of the consumer and the fierce competition of mobile phone products, the mobile phone with the all-metal appearance and the comprehensive screen design are popular with the consumer due to the unique hand feeling and appearance, and become the trend of the appearance design of the mobile phone.
Because the all-metal shell has stronger shielding performance to the built-in antenna, the existing new antenna technology ensures the high radiation frequency of the antenna by cutting the metal shell and using a part of the metal shell as a radiator of the antenna. Meanwhile, when the problem of antenna radiation is solved, the metal shell part serving as a radiator is inevitably touched under a hand-held scene, a stronger hand-held weakening effect is caused on the basis of the design of the conventional built-in antenna due to the capacitive effect of the hand, and the hand-held influences of the left hand and the right hand are inconsistent.
In order to solve the above problems, in the prior art, an antenna switching diversity ASDIV technology is generally adopted, that is, a chip switches a main antenna to the top of a mobile phone in a handheld condition according to a use scene, so as to partially solve the problem of antenna signals. However, the antenna at the bottom of the mobile phone still plays a role in signal transceiving under the branch scene of the antenna of the MIMO technology or the MIMO technology, and the performance of the antenna is still obviously affected.
Disclosure of Invention
The invention provides an antenna device applied to a handheld mobile terminal and a switching method, and solves the problem that the handheld effect has great influence on the antenna signal of the handheld mobile terminal.
In order to solve the above technical problem, the present invention provides an antenna device and a switching method applied to a handheld mobile terminal, which specifically include:
according to a first aspect of the present invention, there is provided an antenna device for a handheld mobile terminal, the device comprising:
the feed-in antenna is in feed connection with a multi-frequency signal source in the mobile terminal;
at least two parasitic antennas, which are located at two end sides of the feed-in antenna and form a coupling gap with the feed-in antenna, wherein the feed-in antenna can be coupled with the parasitic antennas through the coupling gap for feeding;
each parasitic antenna is connected with a reference ground through a tuning switch, and the tuning switch is used for controlling the feed antenna to be coupled with the parasitic antenna to generate a resonant signal.
According to the antenna device, the antenna at the bottom of the metal frame is divided into the feed-in antenna part in the middle and the parasitic antennas at the left side and the right side, and the working parasitic antennas are selected through the corresponding tuning switches, so that the position where the hand absorbs the strongest signal is avoided, and the effect of the hand on the antenna performance is minimized in the left-hand and right-hand-held scenes.
In one possible embodiment, the parasitic antenna includes a first parasitic antenna and a second parasitic antenna located at both end sides of the feed antenna, and forms a first coupling gap and a second coupling gap with the feed antenna.
In a possible implementation manner, when the tuning switch of the first parasitic antenna receives a left hand/right hand holding signal, the tuning switch controls the on/off of the corresponding tuning switch, so that the feed antenna is not coupled with/generates a resonant signal with the first parasitic antenna; and/or
And when the tuning switch of the second parasitic antenna receives a left hand/right hand holding signal, controlling the on-off of the corresponding tuning switch to enable the feed-in antenna to be coupled with/not coupled with the second parasitic antenna to generate a resonant signal.
In a possible implementation, the first parasitic antenna is multiple, and the second parasitic antenna is multiple;
when the tuning switches of the first parasitic antenna/the second parasitic antenna receive the left-hand holding signal, the corresponding tuning switches are controlled to be switched on and off, so that the feed-in antenna is not coupled with the first parasitic antenna/the second parasitic antenna at the leftmost side to generate a first frequency band resonance signal, is coupled with other first parasitic antennas/other second parasitic antennas to generate a first frequency band resonance signal, and is coupled with the second parasitic antenna/the first parasitic antenna to generate a second frequency band resonance signal;
when the tuning switches of the first parasitic antenna/the second parasitic antenna receive the right-hand holding signal, the on-off of the corresponding tuning switches is controlled, so that the feed-in antenna is not coupled with the rightmost second parasitic antenna/the first parasitic antenna to generate a first frequency band resonance signal, is coupled with other second parasitic antennas/other first parasitic antennas to generate a first frequency band resonance signal, and is coupled with the first parasitic antenna/the second parasitic antenna to generate a second frequency band resonance signal.
In a possible implementation manner, the first frequency band is a high frequency band in a wireless communication protocol standard, and the second frequency band is a low frequency band in the wireless communication protocol standard.
In a possible implementation, the number of the parasitic antennas is 4, wherein 2 first parasitic antennas are distributed on the left side of the feed antenna, and the other 2 second parasitic antennas are distributed on the right side of the feed antenna.
In a possible embodiment, the antenna radiator formed by the feed antenna and the parasitic antenna is in the form of a LOOP, a planar inverted F PIFA, or a monopole.
In one possible embodiment, the parasitic antenna has the metal bezel as a reference ground.
In one possible embodiment, the tuning switch is an active switch or a variable capacitor.
In accordance with a second aspect of the present invention, a handover method for an antenna apparatus applied to a handheld mobile terminal, the method includes:
determining whether a left/right hand-held mobile terminal scenario is present;
and when the scene of the left-hand/right-hand handheld mobile terminal is determined, controlling whether the feed-in antenna is coupled with the parasitic antenna to generate a resonant signal or not by controlling a tuning switch corresponding to the parasitic antenna.
According to the method, the antenna at the bottom of the metal frame is divided into the feed-in antenna part in the middle and the parasitic antennas at the left side and the right side, the working parasitic antenna is selected by controlling the tuning switch corresponding to the parasitic antenna, the position where the hand absorbs the strongest signal is avoided, and the effect of the hand on the antenna performance is minimized in the left-hand and right-hand-held scenes.
In a possible implementation manner, controlling whether a feed antenna is coupled with a parasitic antenna to generate a resonant signal by controlling a tuning switch corresponding to the parasitic antenna includes:
for a left-hand/right-hand handheld mobile terminal scene, controlling a feed-in antenna not to be coupled with/generate a resonant signal by controlling a tuning switch corresponding to a parasitic antenna; and/or
For a left-hand/right-hand mobile terminal scene, the feed-in antenna is controlled to be coupled with the second parasitic antenna/not coupled with the first parasitic antenna to generate a resonant signal by controlling a tuning switch corresponding to the parasitic antenna.
In a possible implementation manner, controlling whether the feed antenna is coupled with the parasitic antenna to generate a resonant signal by controlling a tuning switch corresponding to the parasitic antenna includes:
for a left-hand-held mobile terminal scene, when a tuning switch of the first parasitic antenna/the second parasitic antenna receives a left-hand holding signal, the feed-in antenna is controlled not to be coupled with the leftmost first parasitic antenna/the leftmost second parasitic antenna to generate a first frequency band resonance signal, to be coupled with other first parasitic antennas/other second parasitic antennas to generate a first frequency band resonance signal, and to be coupled with the second parasitic antenna/the first parasitic antenna to generate a second frequency band resonance signal;
for a right-hand-held mobile terminal scene, when the tuning switch of the second parasitic antenna/the first parasitic antenna receives a right-hand-held signal, the feed-in antenna is controlled not to be coupled with the rightmost second parasitic antenna/the first parasitic antenna to generate a first frequency band resonant signal, to be coupled with other second parasitic antennas/other first parasitic antennas to generate a first frequency band resonant signal, and to be coupled with the first parasitic antenna/the second parasitic antenna to generate a second frequency band resonant signal.
Compared with the prior art, the antenna device and the antenna switching method applied to the handheld mobile terminal provided by the invention have the following advantages and beneficial effects:
according to the invention, through the multi-branch switching design of the antenna, the parasitic antenna which works is selected by controlling the tuning switch, and the feed-in antenna and the parasitic antenna generate a resonant signal through coupling to realize the antenna radiation function, so that the position where the hand absorbs the strongest signal is avoided, and the effect of the hand on the antenna performance is minimized in the left-hand and right-hand holding scenes.
Drawings
Fig. 1 is a schematic diagram of an antenna device applied to a handheld mobile terminal according to an embodiment;
FIG. 2 is a schematic diagram of a left-handed handset according to an embodiment;
FIG. 3 is a schematic diagram of a right-handed handheld handset according to an embodiment;
fig. 4 is a schematic diagram of an antenna device applied to a left-handed mobile terminal according to an embodiment;
fig. 5 is a schematic diagram of an antenna apparatus applied to a right-handed handheld mobile terminal according to an embodiment;
fig. 6 is a schematic diagram of an antenna device applied to a mobile phone according to an embodiment;
fig. 7 is a flowchart illustrating a method for switching an antenna device applied to a handheld mobile terminal according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Some of the words that appear in the text are explained below:
1. the term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
2. In the embodiment of the present invention, the term "handheld mobile terminal", or called handheld mobile communication terminal, refers to a computer device that can be used in a handheld manner during movement, and broadly includes a mobile phone.
The application scenario described in the embodiment of the present invention is for more clearly illustrating the technical solution of the embodiment of the present invention, and does not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by a person skilled in the art that with the occurrence of a new application scenario, the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems. In the description of the present invention, the term "plurality" means two or more unless otherwise specified.
At present, the mobile phone is designed by adopting an all-metal shell, and the all-metal shell has stronger shielding performance on the built-in antenna, so that the metal shell part serving as an antenna radiator is inevitably touched under the hand-held scene in the existing novel antenna technology, a stronger hand-held weakening effect is caused on the basis of the design of the traditional built-in antenna, and the hand-held influences of the left hand and the right hand are inconsistent. Human hands have obvious influence on the low frequency band (824-960MHz), but have no obvious influence on the high frequency band (2.3-2.69GHz), and the lengths of different frequency bands required in the design of the mobile phone are different, namely, the human hands have different influences on different frequency bands. For example, when a human hand (e.g., a tiger's hand) touches the antenna location, the effect is greatest. Therefore, the preset antenna branch needs to be selected to work according to different use scenes.
The embodiment of the invention provides an antenna device and a switching method applied to a handheld mobile terminal, through the multi-branch switching design of an antenna, a working parasitic antenna is selected by controlling a tuning switch, and a feed-in antenna and the parasitic antenna generate a resonant signal through coupling to realize an antenna radiation function, so that the position where a hand absorbs the strongest signal is avoided, and the effect of the hand on the antenna performance is minimized in a left-hand and right-hand handheld scene.
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an antenna device applied to a handheld mobile terminal according to an embodiment of the present invention includes:
the feed-in antenna 11 is positioned in the middle of the bottom of the metal frame of the mobile terminal and is in feed connection with a multi-frequency signal source in the mobile terminal;
receiving a multi-frequency signal from a multi-frequency signal source within the mobile terminal and conducting to the parasitic antenna;
the multi-frequency signal source is located on a circuit board inside the mobile terminal, and is used for transmitting a multi-frequency signal and conducting the multi-frequency signal to the feed-in antenna, and a specific internal connection circuit of the multi-frequency signal source is not shown in the embodiment.
And the at least two parasitic antennas 12 are positioned at the bottom of the metal frame of the mobile terminal, are respectively distributed at two end sides of the feed-in antenna, form a coupling gap with the feed-in antenna, and can be coupled with the parasitic antennas for feeding through the coupling gap.
According to the antenna device, the feed-in antenna is used as the main antenna, the parasitic antennas positioned on the left side and the right side of the feed-in antenna are used as the branch antennas, and the parasitic antennas can select whether to work with the feed-in antenna in a matched mode according to the handheld condition of the mobile terminal, so that the positive frequency band signal transmission of the mobile terminal is completed, and the influence of the handheld mobile terminal on antenna signals can be avoided.
As an alternative embodiment, the parasitic antenna includes a first parasitic antenna and a second parasitic antenna located at both end sides of the feeding antenna, and forms a first coupling gap and a second coupling gap with the feeding antenna.
As an optional implementation manner, when the tuning switch of the first parasitic antenna receives a left/right-hand holding signal, the tuning switch of the first parasitic antenna controls the on/off of the corresponding tuning switch, so that the feed antenna is not coupled with/generates a resonant signal with the first parasitic antenna; and/or
And when the tuning switch of the second parasitic antenna receives a left hand/right hand holding signal, controlling the on-off of the corresponding tuning switch to enable the feed-in antenna to be coupled with/not coupled with the second parasitic antenna to generate a resonant signal.
Taking the antenna distributed at the bottom end of the metal frame mobile phone as an example, the left end of the parasitic antenna at the leftmost side and the right end of the parasitic antenna at the rightmost side of the antenna are directly connected with the metal frame to be grounded, and form an antenna radiator in an LOOP form with the feed-in antenna.
As shown in fig. 1, 10 is a metal frame, which is a built-in alloy plate of a mobile phone, the parasitic antenna 12 takes the metal frame 10 as a reference ground, and the metal frame is split into three parts by a slot: the mobile phone comprises a feed-in antenna 11 and two parasitic antennas 12 positioned at two end sides of the feed-in antenna, wherein the feed-in antenna 11 is positioned in the middle of the bottom end of the mobile phone and does not touch in a left-hand/right-hand mobile phone holding scene; a slot with a preset size is formed between the parasitic antenna 12 and the feed-in antenna 11, the feed-in antenna 11 is close to the parasitic antenna 12, and the metal traces have parallel portions to ensure that the multi-frequency signal can be conducted to the parasitic antenna 12 in a mode of generating a resonant signal through coupling, and meanwhile, the end portion of the parasitic antenna 12 is connected with the reference ground 10 to form a metal frame portion with specific grounding.
As shown in fig. 2, the mobile phone is held by a left hand, and at this time, the metal frame 12 is in contact with the tiger of the hand, and has a large influence on low-frequency signals.
As shown in fig. 3, the scene of holding the mobile phone with the right hand is shown, and at this time, the metal frame 11 is in contact with the tiger of the hand, and has a large influence on the low-frequency signal.
As shown in fig. 6, the left end of the left parasitic antenna 62 and the right end of the right parasitic antenna 63 are suspended, and form an antenna radiator in a monopole form with the feeding antenna 61.
In implementation, for a left-handed mobile terminal scenario, the tuning switch 641 corresponding to the first parasitic antenna 62 on the left side of the feed antenna 61 is controlled to be turned on, so that the first parasitic antenna 62 is controlled not to generate a resonant signal by coupling with the feed antenna 61 to realize an antenna radiation function; by controlling the tuning switch 642 corresponding to the second parasitic antenna 63 on the right side of the feed-in antenna 61 to be closed, the second parasitic antenna 63 is controlled to generate a resonant signal through coupling with the feed-in antenna 61, so that the high-frequency radiation function of the antenna is realized.
In implementation, for a right-handed handheld mobile terminal scenario, the tuning switch 642 corresponding to the second parasitic antenna 63 on the right side of the feed antenna 61 is controlled to be turned on, so that the second parasitic antenna 63 is controlled not to generate a resonant signal by coupling with the feed antenna 61 to realize an antenna radiation function; by controlling the tuning switch 641 corresponding to the first parasitic antenna 62 on the left side of the feeding antenna 61 to be closed, the first parasitic antenna 62 is controlled to generate a resonant signal through coupling with the feeding antenna 61 to realize the antenna high-frequency band radiation function.
As another optional implementation, the tuning switches include a first tuning switch near the first coupling gap and a second tuning switch far from the first coupling gap connecting the first parasitic antenna, and a third tuning switch near the second coupling gap and a fourth tuning switch far from the second coupling gap connecting the second parasitic antenna.
Take the example that the first parasitic antenna is located at the left side of the feed-in antenna and the second parasitic antenna is located at the right side of the feed-in antenna.
In implementation, for a left-handed mobile terminal scene, the first parasitic antenna is controlled not to generate a resonant signal through coupling with a feed-in antenna by controlling the first/second tuning switches corresponding to the first parasitic antenna to be turned on, so that an antenna radiation function is realized; and because the influence of human hands on the signals of the high frequency band is not obvious, the third tuning switch corresponding to the second parasitic antenna is controlled to be closed, and the second parasitic antenna is controlled to generate a resonant signal through coupling with the feed-in antenna so as to realize the high frequency band radiation function of the antenna.
In implementation, for a right-hand handheld mobile terminal scene, the second parasitic antenna is controlled not to generate a resonant signal through coupling with a feed-in antenna by controlling the third/fourth tuning switch corresponding to the second parasitic antenna to be turned on, so that an antenna radiation function is realized; because the influence of human hands on the signals of the high frequency band is not obvious, the first parasitic antenna is controlled to generate a resonant signal through coupling with the feed-in antenna by controlling the first tuning switch corresponding to the first parasitic antenna to be closed, so that the high frequency band radiation function of the antenna is realized.
As another optional implementation manner, taking the first parasitic antenna located on the left side of the feed-in antenna and the second parasitic antenna located on the right side of the feed-in antenna as an example, for a left-handed mobile terminal scene, by controlling the second tuning switch to be turned on, controlling the leftmost side of the first parasitic antenna not to generate a resonant signal through coupling with the feed-in antenna to realize the first frequency band radiation function of the antenna, controlling the first parasitic antenna to be turned on, controlling the right side of the first parasitic antenna to generate a resonant signal through coupling with the feed-in antenna to realize the first frequency band radiation function of the antenna, and by controlling the third tuning switch to be turned on and the fourth tuning switch to be turned on, controlling the second parasitic antenna to generate a resonant signal through coupling with the feed-in antenna to realize the second frequency band radiation function of the antenna;
for a right-hand handheld mobile terminal scene, the fourth tuning switch is controlled to be turned on, the rightmost side of the second parasitic antenna is controlled not to generate a resonance signal through coupling with the feed-in antenna to achieve the first frequency band radiation function of the antenna, the third tuning switch is controlled to be turned on, the left side of the second parasitic antenna is controlled to generate a resonance signal through coupling with the feed-in antenna to achieve the first frequency band radiation function of the antenna, and the first parasitic antenna is controlled to generate a resonance signal through coupling with the feed-in antenna to achieve the second frequency band radiation function of the antenna through controlling the first tuning switch to be turned on and the second tuning switch to be turned off.
The first frequency band is a high frequency band in a wireless communication protocol standard, and the second frequency band is a low frequency band in the wireless communication protocol standard.
For the left-handed scenario, as shown in fig. 4, in a specific implementation, the first parasitic antenna is located at the left side of the feeding antenna 41, and is divided into a first parasitic antenna 421 and a first parasitic antenna 422 by the first tuning switch 441 and the second tuning switch 442; the second parasitic antenna is located on the right side of the feeding antenna 41 and is divided into a second parasitic antenna 431 and a first parasitic antenna 432 by a third tuning switch 443 and a fourth tuning switch 444; the first tuning switch 441 and the third tuning switch 443 are not operated when being open-circuited, and the second tuning switch 442 and the fourth tuning switch 444 are respectively used as the high-frequency and low-frequency operation branch switches of the antenna. Wherein the second tuning switch 442 is short-circuited, forming a LOOP antenna branch with a high band f1 (shown by dashed line f 1) having the signal source 450 antenna tuning circuit 451-feed antenna 41-first parasitic antenna 421 partially grounded through the second tuning switch 442; wherein the fourth tuning switch 444 forms, through different matching devices (such as capacitors or inductors), a LOOP antenna branch having the signal source 450, the antenna tuning circuit 451, the feed antenna 41, the second parasitic antenna 432, and the portion grounded through the fourth tuning switch 444 and having the low frequency band f2, and the different matching devices are switched (as indicated by the dashed line f 2) through the fourth tuning switch 444 to achieve compatible coverage of the two frequency band bandwidths. Therefore, under the scene, the feed-in antenna and the first parasitic antenna are far away from the influence of the tiger's mouth of the hand through the high-frequency branch formed by the second tuning switch 442 far away from the lower left corner of the whole machine, and the low-frequency branch formed by the third tuning switch 443 on the lower right corner of the whole machine ensures that the antenna radiator is not at the tail end of the mobile phone frame and is far away from the influence of fingers while the design requirement of the long antenna branch is met, so that the influence of the hand on the antenna design is furthest ensured to be minimum.
For the right-handed scenario, as shown in fig. 5, in a specific implementation, the first parasitic antenna is located at the left side of the feeding antenna 51, and is divided into the first parasitic antenna 521 and the first parasitic antenna 522 by the first tuning switch 541 and the second tuning switch 542; the second parasitic antenna is located on the right side of the feeding antenna 51, and is divided into a second parasitic antenna 531 and a first parasitic antenna 532 by the third tuning switch 543 and the fourth tuning switch 544; the second tuning switch 542 and the fourth tuning switch 544 are not operated when being open-circuited, and the third tuning switch 543 and the first tuning switch 541 are respectively used as the branch switches for high-frequency and low-frequency operation of the antenna. Wherein the third tuning switch 543 is short-circuited to form a LOOP antenna branch (as indicated by the dashed line f 1) with the signal source 550 antenna tuning circuit 551-feed antenna 51-second parasitic antenna 531 part being grounded through the third tuning switch 543 with the high frequency band f 1; wherein the first tuning switch 541 forms a LOOP antenna branch with a signal source 550-an antenna tuning circuit 551-a feed antenna 51-a first parasitic antenna 522 grounded partially through the first tuning switch 541 by different matching devices (such as capacitance or inductance), and having a low band f2, (as indicated by a dashed line f 2) by switching different matching devices through the first tuning switch 541 to achieve compatible coverage of two band bandwidths. Therefore, under the scene, the feed-in antenna and the second parasitic antenna are far away from the influence of the hand tiger's mouth through the high-frequency branch formed by the third tuning switch 543 at the far end from the lower right corner of the whole machine, and the low-frequency branch formed by the first tuning switch 541 at the lower left corner of the whole machine ensures that the antenna radiator is not at the tail end of the mobile phone frame and is far away from the influence of fingers while the design requirement of the longer antenna branch is met, so that the influence of the hand on the antenna design is furthest ensured to be minimum.
The number of the parasitic antennas may be two or more, and the parasitic antennas are respectively located at two sides of the feed-in antenna, where the number of the parasitic antennas and the structure of the formed antenna radiator are not limited, and those skilled in the art can select the number of the parasitic antennas and the structure of the antenna radiator according to actual situations.
As an optional implementation manner, the number of the parasitic antennas is 4, wherein 2 first parasitic antennas are distributed on the left side of the feed antenna, and the other 2 second parasitic antennas are distributed on the right side of the feed antenna.
The number of the parasitic antennas is 4, wherein 2 first parasitic antennas are distributed on the left side of the feed-in antenna, and the other 2 second parasitic antennas are distributed on the right side of the feed-in antenna. For a left-hand-held mobile terminal scene, through a corresponding tuning switch, the leftmost first parasitic antenna is controlled not to generate a resonant signal through coupling with the feed-in antenna to realize the first frequency band radiation function of the antenna, the other at least one first parasitic antenna on the left side is controlled to generate a resonant signal through coupling with the feed-in antenna to realize the first frequency band radiation function of the antenna, and the at least one second parasitic antenna on the right side is controlled to generate a resonant signal through coupling with the feed-in antenna to realize the second frequency band radiation function of the antenna. Optionally, the rightmost second parasitic antenna is controlled to generate a resonant signal by coupling with the feed antenna, so as to implement a second frequency band radiation function of the antenna.
For a right-hand-held mobile terminal scene, through a corresponding tuning switch, the rightmost second parasitic antenna is controlled not to generate a resonant signal through coupling with the feed-in antenna to realize the first frequency band radiation function of the antenna, the other at least one second parasitic antenna on the right side is controlled to generate a resonant signal through coupling with the feed-in antenna to realize the first frequency band radiation function of the antenna, and the at least one first parasitic antenna on the left side is controlled to generate a resonant signal through coupling with the feed-in antenna to realize the second frequency band radiation function of the antenna. Optionally, the leftmost parasitic antenna is controlled to generate a resonant signal by coupling with the feed antenna, so as to implement a second frequency band radiation function of the antenna.
The first frequency band is a high frequency band in a wireless communication protocol standard, and the second frequency band is a low frequency band in the wireless communication protocol standard.
The tuning switch is an active switch or a variable capacitor. The tuning switch is not limited herein.
In the embodiment of the present invention, the antenna device may be applied to, but not limited to, a bottom of a handheld mobile terminal.
In the embodiment of the present invention, the handheld mobile terminal may be, but is not limited to, a mobile phone.
The embodiment also provides a method for switching an antenna device applied to a handheld mobile terminal, and since the method is the method for switching the antenna device in the embodiment of the present invention, and the principle of the method for solving the problem is similar to that of the antenna device, the implementation of the method can refer to the implementation of the antenna, and repeated details are not repeated. As shown in fig. 7, includes:
step 701, determining whether the mobile terminal is in a left-hand/right-hand mobile terminal scene;
for the discrimination of the left-hand and right-hand use scenes, the antenna branches required to work can be selected preferentially according to the design of corresponding sensors or by comparing the signal intensity of different signal branches through a chip coupling device.
Step 702, when it is determined that the mobile terminal is in a left-hand/right-hand mobile terminal scenario, controlling whether the feed-in antenna is coupled with the parasitic antenna to generate a resonant signal by controlling a tuning switch corresponding to the parasitic antenna.
Optionally, for a left-handed/right-handed mobile terminal scenario, the feed-in antenna is controlled not to be coupled with/generate a resonant signal with/with the first parasitic antenna by controlling a tuning switch corresponding to the parasitic antenna; and/or
For a left-hand/right-hand mobile terminal scene, the feed-in antenna and the second parasitic antenna are controlled/not coupled with the first parasitic antenna to generate a resonant signal by controlling a tuning switch corresponding to the parasitic antenna.
Optionally, for a left-handed mobile terminal scenario, when the tuning switch of the first parasitic antenna/the second parasitic antenna receives a left-handed holding signal, the feed antenna is controlled not to be coupled with the leftmost first parasitic antenna/the leftmost second parasitic antenna to generate a first frequency band resonant signal, to be coupled with other first parasitic antennas/other second parasitic antennas to generate a first frequency band resonant signal, and to be coupled with the second parasitic antenna/the first parasitic antenna to generate a second frequency band resonant signal;
for a right-hand-held mobile terminal scene, when the tuning switch of the second parasitic antenna/the first parasitic antenna receives a right-hand-held signal, the feed-in antenna is controlled not to be coupled with the rightmost second parasitic antenna/the first parasitic antenna to generate a first frequency band resonant signal, to be coupled with other second parasitic antennas/other first parasitic antennas to generate a first frequency band resonant signal, and to be coupled with the first parasitic antenna/the second parasitic antenna to generate a second frequency band resonant signal.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. An antenna device for a handheld mobile terminal, comprising:
the feed-in antenna is in feed connection with a multi-frequency signal source in the mobile terminal;
at least two parasitic antennas, which are located at two end sides of the feed-in antenna and form a coupling gap with the feed-in antenna, wherein the feed-in antenna can be coupled with the parasitic antennas through the coupling gap for feeding;
each parasitic antenna is connected with a reference ground through a tuning switch, and the tuning switch is used for controlling the feed antenna to be coupled with the parasitic antenna to generate a resonant signal;
the parasitic antennas comprise a first parasitic antenna and a second parasitic antenna which are positioned at two end sides of the feed-in antenna, and a first coupling gap and a second coupling gap are formed between the parasitic antennas and the feed-in antenna, wherein the number of the first parasitic antennas is multiple, the number of the second parasitic antennas is multiple, the first parasitic antennas are distributed on the left side of the feed-in antenna, and the number of the second parasitic antennas are distributed on the right side of the feed-in antenna;
when the tuning switch of the first parasitic antenna receives the left-hand holding signal, the on-off of the corresponding tuning switch is controlled, so that the feed-in antenna is not coupled with the leftmost first parasitic antenna to generate a first frequency band resonance signal, and is coupled with at least one other first parasitic antenna to generate a first frequency band resonance signal; when the tuning switches of the second parasitic antennas receive the left-hand holding signal, the on-off of the corresponding tuning switches is controlled, so that the feed-in antenna is coupled with at least one second parasitic antenna to generate a second frequency band resonant signal;
when the tuning switch of the second parasitic antenna receives a right-hand holding signal, the on-off of the corresponding tuning switch is controlled, so that the feed-in antenna is not coupled with the rightmost second parasitic antenna to generate a first frequency band resonance signal, and is coupled with at least one other second parasitic antenna to generate a first frequency band resonance signal.
2. The antenna device of claim 1, wherein the first frequency band is a high frequency band in a wireless communication protocol standard, and the second frequency band is a low frequency band in the wireless communication protocol standard.
3. The antenna device as claimed in claim 1, wherein the number of the parasitic antennas is 4, 2 parasitic antennas are distributed on the left side of the feeding antenna, and the other 2 parasitic antennas are distributed on the right side of the feeding antenna.
4. The antenna device as claimed in claim 1, wherein the antenna radiator formed by the feed antenna and the parasitic antenna is in the form of a LOOP, a planar inverted-F PIFA, or a monopole.
5. The antenna device of claim 1, wherein the parasitic antenna is referenced to a metal bezel.
6. The antenna device according to claim 1, wherein the tuning switch is an active switch or a variable capacitor.
7. A switching method of an antenna device applied to a handheld mobile terminal is characterized by comprising the following steps:
determining whether a left/right hand-held mobile terminal scenario is present;
when determining that the scene of the left/right hand-held mobile terminal is present:
for a left-hand-held mobile terminal scene, when a tuning switch of a first parasitic antenna receives a left-hand holding signal, a feed-in antenna is controlled not to be coupled with the leftmost first parasitic antenna to generate a first frequency band resonance signal, and is coupled with at least one other first parasitic antenna to generate a first frequency band resonance signal, and when a tuning switch of a second parasitic antenna receives the left-hand holding signal, the on-off of the corresponding tuning switch is controlled, so that the feed-in antenna is coupled with at least one second parasitic antenna to generate a second frequency band resonance signal;
for a right-hand-held mobile terminal scene, when a tuning switch of the second parasitic antenna receives a right-hand-held signal, the feed-in antenna is controlled not to be coupled with the rightmost second parasitic antenna to generate a first frequency band resonance signal, and is coupled with at least one other second parasitic antenna to generate a first frequency band resonance signal, and when the tuning switch of the first parasitic antenna receives the right-hand-held signal, the on-off of the corresponding tuning switch is controlled, so that the feed-in antenna is coupled with at least one first parasitic antenna to generate a second frequency band resonance signal;
the first parasitic antenna is distributed on the left side of the feed-in antenna, and the second parasitic antenna is distributed on the right side of the feed-in antenna.
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Address after: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee after: Qingdao Hisense Mobile Communication Technology Co.,Ltd. Address before: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee before: HISENSE MOBILE COMMUNICATIONS TECHNOLOGY Co.,Ltd. |