CN108258384B - Electronic device, antenna assembly and method for improving antenna radiation index - Google Patents
Electronic device, antenna assembly and method for improving antenna radiation index Download PDFInfo
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- CN108258384B CN108258384B CN201810051723.2A CN201810051723A CN108258384B CN 108258384 B CN108258384 B CN 108258384B CN 201810051723 A CN201810051723 A CN 201810051723A CN 108258384 B CN108258384 B CN 108258384B
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- 238000010586 diagram Methods 0.000 description 9
- 239000002184 metal Substances 0.000 description 6
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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
- H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
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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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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Abstract
The invention provides a method for improving antenna radiation index, which is applied to an electronic device and comprises the following steps: acquiring the output power of a radio frequency module of the electronic device; and selecting the radio frequency module to be electrically connected with one of a first antenna amplifier and a second antenna amplifier of the electronic device according to the output power of the radio frequency module. The invention also provides an electronic device and an antenna assembly. The electronic device, the antenna assembly and the method for improving the radiation index of the antenna can switch the antenna amplifier connected with the radio frequency module according to the output power of the radio frequency module, thereby well avoiding the radiation stray exceeding standard and improving the radiation index of the antenna under different output powers of the radio frequency module.
Description
Technical Field
The present invention relates to electronic devices, and particularly to an electronic device with an antenna, an antenna assembly and a method for improving antenna radiation index applied to the electronic device.
Background
The radiation stray is taken as a mandatory authentication index of the current electronic equipment, and is a difficult problem which is most complex and difficult to solve in all antenna radiation index authentications. Particularly for the GSM frequency band, under partial working scenes, the power of the GSM frequency band is higher, and strong energy is easily excited instantly, so that the harmonic wave of radiation stray exceeds the standard. In practical use, the third harmonic of GSM900 is easy to exceed the standard, and the second or third harmonic of GSM1800 exceeds the standard.
For rf signals, the transmitted signal will not only include the usable signal (GSM900), but often also the second (1800 GHz)/third harmonic component (2700GHz) will be included, and most of the third harmonic will exceed the standard in practical use. Also for a resonant antenna, the fundamental, second/third order resonance is included. When the third harmonic energy of the rf signal reaches the third resonance of the antenna, the unwanted harmonic energy is radiated away, resulting in spurious signals exceeding the standard.
In addition, GSM is used as a high-power communication connection system, and in most cases, a small power is used, and a transmitted antenna signal is amplified by an amplifier to realize a call, however, GSM is also in a high-power condition in some scenarios, and when GSM is in a high-power condition, the linearity of the amplifier of GSM is rapidly reduced, so that the harmonic component is increased, and the carried harmonic component causes radiation stray exceeding along with the radiation of the antenna.
Disclosure of Invention
The invention aims to provide an electronic device, an antenna assembly and a method for improving the radiation index of an antenna, which can effectively avoid the radiation stray of the antenna from exceeding the standard and improve the radiation index of the antenna when the antenna works under different powers.
In order to solve the above technical problem, an electronic device is provided, where the electronic device includes an antenna assembly and a processor, the antenna assembly includes a radio frequency module, a first antenna amplifier, a second antenna amplifier, an antenna, and a first selection unit, the first selection unit is electrically connected between the radio frequency module and the first antenna amplifier, the first antenna amplifier and the second antenna amplifier are also electrically connected to the antenna, the processor is electrically connected to the radio frequency module and the first selection unit, and the processor is configured to obtain an output power of the radio frequency module and control the first selection unit to correspondingly select one of the radio frequency module and the first antenna amplifier and the second antenna amplifier to be electrically connected according to the output power of the radio frequency module.
In another aspect, an antenna assembly is provided, where the antenna assembly includes a radio frequency module, a first antenna amplifier, a second antenna amplifier, an antenna, and a first selection unit, the first selection unit is electrically connected between the radio frequency module and the first antenna amplifier, the second antenna amplifier is further electrically connected to the antenna, and the first selection unit selects the radio frequency module to be electrically connected to one of the first antenna amplifier and the second antenna amplifier according to an output power of the radio frequency module.
In another aspect, a method for improving antenna radiation index is provided, where the method is applied in an electronic device, and the method includes: acquiring the output power of a radio frequency module of the electronic device; and selecting the radio frequency module to be electrically connected with one of a first antenna amplifier and a second antenna amplifier of the electronic device according to the output power of the radio frequency module.
The electronic device, the antenna assembly and the method for improving the radiation index of the antenna can switch the antenna amplifier connected with the radio frequency module according to the output power of the radio frequency module, thereby well avoiding radiation stray exceeding standard and improving the radiation index of the antenna under different output powers of the radio frequency module, and simultaneously ensuring the performance of the antenna and ensuring the communication quality.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a block diagram of an electronic device according to an embodiment of the invention.
Fig. 2 is a schematic diagram illustrating specific types of a first antenna amplifier and a second antenna amplifier of an electronic device according to an embodiment of the invention.
Fig. 3 is a block diagram of an electronic device according to another embodiment of the invention.
Fig. 4 is a schematic diagram illustrating a specific structure of a selection unit of an electronic device according to an embodiment of the invention.
Fig. 5 is a schematic diagram illustrating a specific structure of a selection unit of an electronic device according to another embodiment of the invention.
Fig. 6 is a flowchart of a method for improving an antenna radiation index according to an embodiment of the invention.
FIG. 7 is a sub-flowchart of step S63 in FIG. 6 in one embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the embodiments of the present invention, it should be understood that the elements described as a whole may include separate elements or may be integrated together when further elements are included.
Please refer to fig. 1, which is a block diagram of an electronic device 100. The electronic device 100 includes an antenna assembly 1 and a processor 2, where the antenna assembly 1 includes a radio frequency module 11, a first antenna amplifier 12, a second antenna amplifier 13, an antenna 14, and a selection unit 15. The selecting unit 15 is electrically connected between the radio frequency module 11 and the first and second antenna amplifiers 12 and 13, and is configured to select one of the radio frequency module 11 and the first and second antenna amplifiers 12 and 13 to be electrically connected, and the first and second antenna amplifiers 12 and 13 are also electrically connected to the antenna 14. The first antenna amplifier 12 and the second antenna amplifier 13 are also electrically connected to the antenna 14. When one of the first antenna amplifier 12 and the second antenna amplifier 13 is selected to be electrically connected to the radio frequency module 11, the antenna radio frequency signal generated by the radio frequency module 11 is amplified by the corresponding electrically connected antenna amplifier and then radiated by the antenna 14.
The processor 2 is electrically connected to the radio frequency module 11 and the selection unit 15, and the processor 2 is configured to obtain an output power of the radio frequency module 11, and control the selection unit 15 to correspondingly select one of the radio frequency module 11 and the first antenna amplifier 12 and the second antenna amplifier 13 to be electrically connected according to the output power of the radio frequency module 11, so that one of the first antenna amplifier 12 and the second antenna amplifier 13 works as an amplifier of the radio frequency module 11. That is, the selecting unit 15 may select the rf module 11 to be electrically connected to one of the first antenna amplifier 12 and the second antenna amplifier 13 according to the output power of the rf module 11, so that the selected first antenna amplifier 12 or the selected second antenna amplifier 13 is used as the amplifier of the rf module 11.
Therefore, in the present application, according to the difference of the output power of the radio frequency module 11, the corresponding antenna amplifier is correspondingly selected to adapt to the output power of the current radio frequency module 11, so that the radio frequency module 11 can be ensured to avoid the spurious radiation exceeding under different output powers, and the radiation index of the spurious radiation antenna is improved.
Specifically, the step of controlling, by the processor 2, the selection unit 15 to select the radio frequency module 11 to be electrically connected to one of the first antenna amplifier 12 and the second antenna amplifier 13 according to the output power of the radio frequency module 11 may include: the processor 2 controls the selecting unit 15 to select the radio frequency module 11 to be electrically connected with the first antenna amplifier 12 when the output power of the radio frequency module 11 is smaller than a preset value, and the processor 2 controls the selecting unit 15 to select the radio frequency module 11 to be electrically connected with the second antenna amplifier 13 when the output power of the radio frequency module 11 exceeds the preset value. That is, the selecting unit 15 selects the radio frequency module 11 to be electrically connected to the first antenna amplifier 12 when the output power of the radio frequency module 11 is smaller than a preset value, and the selecting unit 15 selects the radio frequency module 11 to be electrically connected to the second antenna amplifier 13 when the output power of the radio frequency module 11 exceeds the preset value.
The preset value is a preset critical value for distinguishing the output power of the rf module 11 as high power or low power, and preferably, the preset value is a value that when the output power of the rf module 11 starts to be greater than or equal to the preset value, the first antenna amplifier 12 continues to be used for amplification, which may cause the spurious radiation to exceed the standard.
Referring to fig. 2, in some embodiments, the first antenna amplifier 12 is a GSM (Global System for Mobile Communications) saturation amplifier a1, and the second antenna amplifier 13 is a GSM linear amplifier a 2.
When the output power of the radio frequency module 11 is lower than the preset value and is at a lower output power, the output power is low, the carried harmonic energy is small, and the radiation stray is small, so that the first antenna amplifier 12 which is selected as a GSM saturated amplifier is used for amplification, the radiation performance of the antenna can be effectively improved, the signal intensity is improved, and the communication quality is improved. When the output power of the radio frequency module 11 exceeds the preset value and is at a higher output power, because the output power is high, the carried harmonic energy is larger, at this time, the second antenna amplifier 13 which is selected as a GSM linear amplifier is used for amplification, so that the linearity can be effectively improved, the radiation stray exceeding standard can be avoided, and because the output power is larger, the radiation performance of the antenna can be ensured, the high signal intensity can be ensured, and the communication quality can be ensured. Therefore, the performance of the antenna can be ensured and the radiation stray exceeding can be avoided under the low output power and the high output power of the radio frequency module 11.
Referring to fig. 3, a block diagram of an electronic device 100 according to another embodiment of the invention is shown. In another embodiment, the antenna component 1 further comprises a selection unit 16.
The selection unit 16 is electrically connected between the first antenna amplifier 12, the second antenna amplifier 13, and the antenna 14, and is configured to select connection between one of the first antenna amplifier 12 and the second antenna amplifier 13 and the antenna 14 in accordance with the selection unit 15.
Specifically, the processor 2 is further connected to the selection unit 16, and the processor 2 controls the selection unit 16 to correspondingly select one of the antenna 14 and the first antenna amplifier 12, or the second antenna amplifier 13 to be electrically connected according to the output power of the radio frequency module 11.
When the output power of the radio frequency module 11 is smaller than a preset value, the processor 2 further controls the selection unit 16 to select the antenna 14 to be electrically connected with the first antenna amplifier 12, and when the output power of the radio frequency module 11 exceeds the preset value, the processor 2 further controls the selection unit 16 to select the antenna 14 to be electrically connected with the second antenna amplifier 13. That is, the selecting unit 16 further selects the antenna 14 to be electrically connected to the first antenna amplifier 12 when the output power of the radio frequency module 11 is smaller than a preset value, and the selecting unit 16 further selects the antenna 14 to be electrically connected to the second antenna amplifier 13 when the output power of the radio frequency module 11 exceeds the preset value.
Therefore, when the processor 2 controls the selection unit 15 to select the radio frequency module 11 to be electrically connected with one of the first antenna amplifier 12 and the second antenna amplifier 13 according to the output power of the radio frequency module 11, the selection unit 16 is also simultaneously controlled to select the antenna 14 to be electrically connected with the corresponding one of the first antenna amplifier 12 and the second antenna amplifier 13. Thus, by the selection of the selection units 15, 16, a radio frequency path is formed from the radio frequency module 11 to the selected one of the first antenna amplifier 12 and the second antenna amplifier 13 to the antenna 14.
By adding the selection unit 16, the electrical connection between the antenna 14 and one of the first antenna amplifier 12 and the second antenna amplifier 13 which is not connected to the radio frequency module 11 can be further cut off, so that the interference of the one of the first antenna amplifier 12 and the second antenna amplifier 13 which is not connected to the radio frequency module 11 on the antenna 14 is avoided, and the overall performance of the antenna is improved.
Obviously, when one antenna amplifier is selected to be connected to the rf module 11 and/or the antenna 14, the other unselected antenna amplifier is disconnected from the rf module 11 and/or the antenna 14.
Referring to fig. 4, a schematic diagram of the specific structures of the selection unit 15 and the selection unit 16 of the electronic device 100 according to an embodiment of the invention is shown.
As shown in fig. 4, the selecting unit 15 may be a single-pole double-throw switch S1, the single-pole double-throw switch S1 includes a fixed contact P1 and two moving contacts P2, the fixed contact P1 is electrically connected to the rf module 11, and the two moving contacts P2 are electrically connected to the first antenna amplifier 12 and the second antenna amplifier 13, respectively.
The fixed contact P1 of the single-pole double-throw switch S1 is selectively electrically connected with one of the movable contacts P2 under the control of the processor 2 to selectively electrically connect the radio frequency module 11 with one of the first antenna amplifier 12 and the second antenna amplifier 13. That is, according to the output power of the rf module 11, the stationary contact P1 of the single-pole double-throw switch S1 is selectively electrically connected to one of the movable contacts P2 to selectively electrically connect the rf module 11 to one of the first and second antenna amplifiers 12 and 13.
The selection unit 16 may also be a single-pole double-throw switch S2, the single-pole double-throw switch S2 includes a stationary contact P3 and two movable contacts P4, the stationary contact P3 is electrically connected to the antenna 14, and the two movable contacts P4 are electrically connected to the first and second antenna amplifiers 12 and 13, respectively.
The stationary contact P3 of the single pole double throw switch S2 is selectively electrically connected to one of the movable contacts P4 under the control of the processor 2 to selectively electrically connect the antenna 14 to one of the first and second antenna amplifiers 12 and 13. That is, according to the output power of the rf module 11, the stationary contact P3 of the single-pole double-throw switch S2 is selectively electrically connected to one of the movable contacts P4 to selectively electrically connect the antenna 14 to one of the first and second antenna amplifiers 12 and 13.
Referring to fig. 5, a schematic diagram of the specific structures of the selection unit 15 and the selection unit 16 of the electronic device 100 according to an embodiment of the invention is shown.
As shown in fig. 5, the selection unit 15 may include two MOS switches Q1, drains of the two MOS switches Q1 are electrically connected to the rf module 11, and sources of the two MOS switches Q1 are electrically connected to the first antenna amplifier 12 and the second antenna amplifier 13, respectively. The gates of the two MOS switch transistors Q1 are both electrically connected to the processor 2. The processor 2 controls one of the MOS switch transistors Q1 to be turned on and the other MOS switch transistor Q1 to be turned off according to the output power of the radio frequency module 11, so as to select one of the first antenna amplifier 12 and the second antenna amplifier 13 to be electrically connected to the radio frequency module 11. That is, the two MOS switch transistors Q1 may be in an on state or an off state according to the output power of the rf module 11, and the rf module 11 is selected to be electrically connected to one of the first antenna amplifier 12 and the second antenna amplifier 13.
The selection unit 16 may also include two MOS switches Q2, sources of the two MOS switches Q2 are both electrically connected to the antenna 14, and drains of the two MOS switches Q2 are electrically connected to the first and second antenna amplifiers 12 and 13, respectively. The gates of the two MOS switch transistors Q2 are both electrically connected to the processor 2. The processor 2 synchronously controls one of the MOS switch transistors Q2 to be turned on and the other MOS switch transistor Q2 to be turned off according to the output power of the rf module 11, and selects the antenna 14 to be electrically connected to one of the first antenna amplifier 12 and the second antenna amplifier 13 electrically connected to the rf module 11. That is, the two MOS switch transistors Q2 are turned on or off according to the output power of the rf module 11, and the antenna 14 is selected to be electrically connected to one of the first antenna amplifier 12 and the second antenna amplifier 13 electrically connected to the rf module 11.
Obviously, in some embodiments, the MOS switches Q1 and Q2 may be replaced by electronic switches such as BJT transistors.
In some embodiments, the selection unit 15 may include a single-pole double-throw switch S1, and the selection unit 16 may include two MOS switch transistors Q2. In other embodiments, the selection unit 15 may also include two MOS switch transistors Q1, and the selection unit 16 includes a single-pole double-throw switch S2.
As shown in fig. 1 to 5, the rf module 11 specifically includes an rf transceiver circuit 111 and a matching circuit 112. The radio frequency transceiver circuit 111 is connected to the selection unit 15 through the matching circuit 112. The matching circuit 112 is used for matching the impedance between the radio frequency transceiver circuit 11 and the antenna 3. The processor 2 is specifically electrically connected to the rf transceiver circuit 111 to obtain the output power of the rf transceiver circuit 111 as the output power of the rf module 11.
Therefore, in the application, one antenna amplifier is reasonably selected to amplify according to the output power of the radio frequency module 11, and when the radio frequency module 11 is in different output powers, the whole antenna performance of the antenna module 1 can be considered and the radiation stray is guaranteed not to exceed the standard.
The processor 2 may be a central processing unit, a microcontroller, a microprocessor, a single chip, a digital signal processor, or the like. The electronic device 100 may be a mobile phone, a tablet computer, or other electronic device having the antenna 14.
The antenna 14 may be a metal part disposed on a circuit board of the electronic device 100, a metal back shell or a metal frame of the electronic device 100, or an antenna radiator formed after the metal part disposed on the circuit board of the electronic device 100 is electrically connected to the metal back shell or the metal frame.
Fig. 6 is a flowchart of a method for improving antenna radiation index according to an embodiment of the present invention. The method for improving the antenna radiation index is applied to the electronic device 100, and the method for improving the antenna radiation index includes the following steps.
The output power of the rf module 11 is obtained (S61).
The rf module 11 is electrically connected to one of the first antenna amplifier 12 and the second antenna amplifier 13 according to the output power of the rf module 11 (S63).
As shown in fig. 6, in some embodiments, the method further comprises the steps of:
the antenna 14 is selected to be electrically connected to one of the first antenna amplifier 12 and the second antenna amplifier 13 according to the output power of the rf module 11 (S65).
Please refer to fig. 7, which is a sub-flowchart of step S63 in fig. 6 in an embodiment. As shown in fig. 7, the step S63 specifically includes the following steps.
The output power of the rf module 11 is compared with a predetermined value (S631). The preset value is a preset critical value for distinguishing the output power of the rf module 11 as high power or low power.
When the output power of the rf module 11 is smaller than the preset value, the rf module 11 is selected to be electrically connected to the first antenna amplifier 12 (S633). Wherein the first antenna amplifier 12 is a GSM saturated amplifier a 1.
When the output power of the rf module 11 exceeds the preset value, the rf module 11 is selected to be electrically connected to the second antenna amplifier 13 (S635). Wherein the second antenna amplifier 13 is a GSM linear amplifier a 2.
In some embodiments, the aforementioned step S65 may also include the steps of: when the output power of the radio frequency module 11 is smaller than a preset value, the selection unit 16 is controlled to select the antenna 14 to be electrically connected with the first antenna amplifier 12, and when the output power of the radio frequency module 11 exceeds the preset value, the selection unit 16 is also controlled to select the antenna 14 to be electrically connected with the second antenna amplifier 13. Therefore, when the processor 2 controls the selection unit 15 to select the radio frequency module 11 to be electrically connected with one of the first antenna amplifier 12 and the second antenna amplifier 13 according to the output power of the radio frequency module 11, the selection unit 16 is also simultaneously controlled to select the antenna 14 to be electrically connected with the corresponding one of the first antenna amplifier 12 and the second antenna amplifier 13.
According to the electronic device 100, the antenna assembly 1 and the method for improving the antenna radiation index, the antenna amplifier connected with the radio frequency module 11 can be switched according to the output power of the radio frequency module 11, so that radiation stray exceeding can be well avoided when the output power of the radio frequency module 11 is low or high, and the radiation performance of the antenna is ensured to ensure the communication quality.
The foregoing is illustrative of embodiments of the present invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the embodiments of the present invention and are intended to be within the scope of the present invention.
Claims (13)
1. An electronic device, comprising an antenna assembly and a processor, wherein the antenna assembly includes a radio frequency module, a first antenna amplifier, a second antenna amplifier, an antenna, and a first selection unit, the first selection unit is electrically connected between the radio frequency module and the first antenna amplifier, the first antenna amplifier and the second antenna amplifier are also electrically connected to the antenna, the processor is electrically connected to the radio frequency module and the first selection unit, the processor is configured to obtain an output power of the radio frequency module, and control the first selection unit to correspondingly select one of the radio frequency module and the first antenna amplifier or the second antenna amplifier to be electrically connected according to a current output power of the radio frequency module, so as to ensure that the radio frequency module can avoid spurious radiation under different output powers, and improving the radiation index of the antenna, wherein the processor controls the first selection unit to select the radio frequency module to be electrically connected with the first antenna amplifier when the output power of the radio frequency module is smaller than a preset value, and controls the first selection unit to select the radio frequency module to be electrically connected with the second antenna amplifier when the output power of the radio frequency module exceeds the preset value, wherein the first antenna amplifier is a GSM saturated amplifier, and the second antenna amplifier is a GSM linear amplifier.
2. The electronic device according to claim 1, further comprising a second selection unit, wherein the processor is further connected to the second selection unit, and the processor controls the second selection unit to correspondingly select the antenna to be electrically connected to one of the first antenna amplifier and the second antenna amplifier according to the output power of the radio frequency module.
3. The electronic device according to claim 2, wherein the processor further controls the second selecting unit to select the antenna to be electrically connected to the first antenna amplifier when the output power of the rf module is smaller than a preset value, and the processor further controls the second selecting unit to select the antenna to be electrically connected to the second antenna amplifier when the output power of the rf module exceeds the preset value.
4. The electronic device according to any one of claims 1-3, wherein the first selection unit comprises a first single-pole double-throw switch, the first single-pole double-throw switch comprises a first fixed contact and two first movable contacts, the first fixed contact is electrically connected with the radio frequency module, the two first movable contacts are respectively electrically connected with the first antenna amplifier and the second antenna amplifier, and the first fixed contact of the first single-pole double-throw switch is controlled by the processor to select one of the first movable contacts to be electrically connected so as to selectively electrically connect the radio frequency module with one of the first antenna amplifier and the second antenna amplifier.
5. The electronic device according to any of claims 2-3, wherein the second selection unit comprises a second single-pole double-throw switch, the second single-pole double-throw switch comprising a second stationary contact and two second movable contacts, the second stationary contact being electrically connected to the antenna, the two second movable contacts being electrically connected to the first and second antenna amplifiers, respectively; the second fixed contact of the second single-pole double-throw switch is selectively electrically connected with one of the second movable contacts under the control of the processor to selectively electrically connect the antenna with one of the first antenna amplifier and the second antenna amplifier.
6. An antenna assembly, comprising a radio frequency module, a first antenna amplifier, a second antenna amplifier, an antenna, and a first selection unit, wherein the first selection unit is electrically connected between the radio frequency module and the first antenna amplifier, the first antenna amplifier and the second antenna amplifier are further electrically connected to the antenna, the first selection unit selects the radio frequency module to be electrically connected to one of the first antenna amplifier and the second antenna amplifier according to a current output power of the radio frequency module, so as to ensure that the radio frequency module can avoid spurious emissions exceeding at different output powers and improve radiation indexes of the antenna, wherein the first selection unit selects the radio frequency module to be electrically connected to the first antenna amplifier when the output power of the radio frequency module is smaller than a predetermined value, and when the output power of the radio frequency module exceeds the preset value, selecting the radio frequency module to be electrically connected with the second antenna amplifier, wherein the first antenna amplifier is a GSM saturated amplifier, and the second antenna amplifier is a GSM linear amplifier.
7. The antenna assembly of claim 6, further comprising a second selection unit configured to select the antenna to be electrically connected to one of the first antenna amplifier and the second antenna amplifier in response to the output power of the radio frequency module.
8. The antenna assembly of claim 7, wherein the second selection unit selects the antenna to be electrically connected to a first antenna amplifier when the output power of the radio frequency module is less than a predetermined value, and wherein the second selection unit selects the antenna to be electrically connected to a second antenna amplifier when the output power of the radio frequency module exceeds the predetermined value.
9. The antenna assembly of any one of claims 6-8, wherein the first selection unit comprises a first single pole double throw switch, the first single pole double throw switch comprising a first stationary contact and two first movable contacts, the first stationary contact being electrically connected to the radio frequency module, the two first movable contacts being electrically connected to the first antenna amplifier and the second antenna amplifier, respectively, the first stationary contact of the first single pole double throw switch selectively electrically connecting one of the first movable contacts to selectively electrically connect the radio frequency module to one of the first antenna amplifier and the second antenna amplifier.
10. The antenna assembly of any one of claims 7-8, wherein the second selection unit comprises a second single pole double throw switch, the second single pole double throw switch comprising a second stationary contact and two second movable contacts, the second stationary contact being electrically connected to the antenna, the two second movable contacts being electrically connected to the first and second antenna amplifiers, respectively; the second fixed contact of the second single-pole double-throw switch is selectively electrically connected with one of the second movable contacts to selectively electrically connect the antenna with one of the first antenna amplifier and the second antenna amplifier.
11. A method for improving antenna radiation index is applied to an electronic device, and the method comprises the following steps:
acquiring the output power of a radio frequency module of the electronic device;
selecting one of a radio frequency module and a first antenna amplifier and a second antenna amplifier of an electronic device to be electrically connected according to the current output power of the radio frequency module, so that the radio frequency module can avoid the radiation stray exceeding standard under different output powers, and the radiation index of the antenna of the radiation stray is improved;
wherein, the selecting the radio frequency module according to the current output power of the radio frequency module to be electrically connected with one of a first antenna amplifier and a second antenna amplifier of an electronic device comprises:
when the output power of the radio frequency module is smaller than a preset value, selecting the radio frequency module to be electrically connected with a first antenna amplifier;
when the output power of the radio frequency module exceeds the preset value, the radio frequency module is selected to be electrically connected with a second antenna amplifier;
the first antenna amplifier is a GSM saturated amplifier, and the second antenna amplifier is a GSM linear amplifier.
12. The method of claim 11, further comprising:
and selecting the antenna of the electronic device to be electrically connected with one of the first antenna amplifier and the second antenna amplifier according to the output power of the radio frequency module.
13. The method of claim 12, wherein the selecting the antenna of the electronic device to be electrically connected to one of the first antenna amplifier and the second antenna amplifier according to the output power of the radio frequency module comprises:
when the output power of the radio frequency module is smaller than a preset value, the antenna is selected to be electrically connected with the first antenna amplifier; and
and when the output power of the radio frequency module exceeds the preset value, the selected antenna is electrically connected with the second antenna amplifier.
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| CN201810051723.2A CN108258384B (en) | 2018-01-17 | 2018-01-17 | Electronic device, antenna assembly and method for improving antenna radiation index |
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| CN108258384B true CN108258384B (en) | 2020-05-26 |
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| CN109218476B (en) * | 2018-10-23 | 2021-07-23 | 努比亚技术有限公司 | Method for controlling radiation stray, terminal and computer readable storage medium |
| CN110572178B (en) | 2019-09-06 | 2021-09-24 | 维沃移动通信有限公司 | Network radio frequency structure, radio frequency control method and electronic equipment |
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| JPH0787417B2 (en) * | 1993-06-25 | 1995-09-20 | 日本電気株式会社 | Received power deterioration compensation method |
| US7965987B2 (en) * | 2005-11-03 | 2011-06-21 | Magnolia Broadband Inc. | Amplifying a transmit signal using a fractional power amplifier |
| CN102404021A (en) * | 2011-11-04 | 2012-04-04 | 中兴通讯股份有限公司 | Duplex amplifying module, radio frequency front end module and multi-mode terminal |
| CN104485907A (en) * | 2015-01-03 | 2015-04-01 | 广州钧衡微电子科技有限公司 | High-efficiency multimode radio frequency power amplifier |
| CN106208983B (en) * | 2016-06-30 | 2021-07-16 | 唯捷创芯(天津)电子技术股份有限公司 | Time division multiplexing-oriented multimode power amplifier module, chip and communication terminal |
| CN106301409A (en) * | 2016-08-22 | 2017-01-04 | 维沃移动通信有限公司 | A kind of power amplification circuit, mobile terminal and method |
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