CN109039348B - Antenna control method and antenna control device - Google Patents
Antenna control method and antenna control device Download PDFInfo
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- CN109039348B CN109039348B CN201810595042.2A CN201810595042A CN109039348B CN 109039348 B CN109039348 B CN 109039348B CN 201810595042 A CN201810595042 A CN 201810595042A CN 109039348 B CN109039348 B CN 109039348B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
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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
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
Abstract
The embodiment of the invention discloses an antenna control device which is applied to a terminal. The antenna control device includes: the device comprises a switch module, a plurality of matching networks and a processing module. One ends of the matching networks are electrically connected with the antenna of the terminal through the switch module, and the other ends of the matching networks are grounded. The processing module is used for controlling the switch module to switch the electric connection between the antenna and an initial matching network in the plurality of matching networks into the electric connection between the antenna and a preset matching network in the plurality of matching networks when the peripheral interface of the terminal is detected to be changed from the non-inserted state to the inserted state; the preset matching network is matched with the transmitting frequency band or the receiving frequency band of the antenna acquired through the radio frequency processor of the terminal. The embodiment of the invention also discloses an antenna control method, which can electrically connect the antenna with the optimal matching network when the peripheral interface is changed into an inserted state, thereby improving the radiation efficiency of the antenna.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an antenna control method and an antenna control apparatus.
Background
With the increasing popularization of handheld terminals such as mobile phones and tablet computers, more and more terminals adopt all-metal shells or metal frames to improve the appearance and the texture of products. However, the appearance or texture of the product and the antenna performance of the terminal are often mutually restricted, and in addition to the trend that the current terminal is increasingly thinner and lighter, the design space of the antenna becomes smaller and smaller, and the design of the antenna is developed toward modularization. However, the modular antenna often has a problem of narrow antenna frequency bandwidth, and to solve this problem, an adjustable switching device (for example, including a single-pole multi-throw switch) is often added to the antenna end.
In the prior art, the antenna of the metal rear shell is generally designed by adopting a frame as an antenna radiation body, the antenna is basically positioned at the lower end or the upper end of the mobile phone, external parts such as a USB (universal serial bus), an earphone and the like exist around the lower-end antenna, and when peripheral accessories such as the earphone and the like are inserted, the environment of the antenna is deteriorated, so that the performance is deteriorated.
In the prior art, when the performance of an antenna is deteriorated after a peripheral component is inserted, a software algorithm is used for switching through a Double Pole Double Throw (DBDT) switch, but the switching algorithm is switched only when the frequency of the switching algorithm is lower than a certain threshold value (usually 5dB) in order to prevent frequent switching, and even if a main transceiver is switched to an upper end, an auxiliary receiver is switched to a lower end, so that the influence caused by insertion of an earphone or a USB cannot be eliminated.
Disclosure of Invention
The embodiment of the invention discloses an antenna control device on one hand, which is applied to a terminal, and the antenna control device comprises:
a switch module;
one ends of the matching networks are electrically connected with the antenna of the terminal through the switch module, and the other ends of the matching networks are grounded;
the processing module is used for controlling the switch module to switch the electric connection between the antenna and an initial matching network in the matching networks into the electric connection between the antenna and a preset matching network in the matching networks when the peripheral interface of the terminal is detected to be changed from the non-inserted state to the inserted state; the preset matching network is matched with the transmitting frequency band or the receiving frequency band of the antenna acquired through the radio frequency processor of the terminal.
As a possible implementation, in the antenna control apparatus, the peripheral interface of the terminal includes an earphone interface or a USB interface of the terminal.
As a possible implementation, in the antenna control apparatus, each matching network of the plurality of matching networks includes a capacitor, an inductor, a resistor, or any combination thereof.
As a possible implementation, in the antenna control apparatus, the processing module includes an application processor and a communication processor;
the application processor is used for generating a state change instruction when detecting that the peripheral interface of the terminal is changed from a non-insertion state to an insertion state;
the communication processor is used for acquiring the transmitting frequency band or the receiving frequency band of the antenna detected by the radio frequency processor according to the state change instruction and switching the antenna to be electrically connected with the initial matching network in the plurality of matching networks to be electrically connected with the preset matching network in the plurality of matching networks through the control interface control switch module.
As a possible implementation manner, in the antenna control device, the control Interface is a General Purpose Input/Output Interface (GPIO) or a Mobile Industry Processor Interface (MIPI).
As a possible implementation manner, in the antenna control apparatus, the matching of the preset matching network with the transmission frequency band or the reception frequency band of the antenna acquired by the radio frequency processor of the terminal includes:
and the capacitance value of the preset matching network is matched with the transmitting frequency band or the receiving frequency band of the antenna acquired by the radio frequency processor of the terminal.
The embodiment of the invention also discloses an antenna control method, which is applied to a terminal comprising a switch module, a plurality of matching networks and a processing module; one ends of the matching networks are electrically connected with the antenna of the terminal through the switch module, and the other ends of the matching networks are grounded; the antenna control method comprises the following steps:
judging whether the peripheral interface of the terminal is changed from a non-insertion state to an insertion state through a processing module;
if the antenna is electrically connected with the initial matching network in the plurality of matching networks, the switch module is controlled by the processing module to switch the electrical connection between the antenna and the preset matching network in the plurality of matching networks; the preset matching network is matched with the transmitting frequency band or the receiving frequency band of the antenna acquired through the radio frequency processor of the terminal.
As a possible implementation manner, in the antenna control method, the peripheral interface of the terminal includes an earphone interface or a USB interface of the terminal.
As a possible implementation manner, in the antenna control method, the processing module includes an application processor and a communication processor; the processing module judges whether the peripheral interface of the terminal is changed from a non-insertion state to an insertion state; if the antenna is electrically connected with the initial matching network in the plurality of matching networks, the step of controlling the switch module to switch the antenna to be electrically connected with the preset matching network in the plurality of matching networks through the processing module comprises the following steps:
judging whether the peripheral interface of the terminal is changed from a non-insertion state to an insertion state through an application processor;
if the judgment result is yes, generating a state change instruction through the application processor; and controlling the communication processor to acquire the transmitting frequency band or the receiving frequency band of the antenna detected by the radio frequency processor according to the state change instruction, and enabling the communication processor to control the switch module to switch the antenna to be electrically connected with the initial matching network in the plurality of matching networks into the antenna to be electrically connected with the preset matching network in the plurality of matching networks through the control interface.
As a possible implementation manner, in the antenna control method, the control Interface is a General Purpose Input/Output Interface (GPIO) or a Mobile Industry Processor Interface (MIPI).
According to the technical scheme, the embodiment of the invention has the following advantages:
the embodiment of the invention discloses an antenna control device and an antenna control method, wherein when a peripheral interface of a terminal is detected to be changed from a non-insertion state to an insertion state, a control switch module switches the electric connection between an antenna and an initial matching network in a plurality of matching networks into the electric connection between the antenna and a preset matching network in the plurality of matching networks, so that the antenna can be electrically connected with the optimal matching network, and the radiation efficiency of the antenna is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a structural diagram of an antenna control apparatus according to an embodiment of the present invention.
FIG. 2 is a block diagram of a processing module according to an embodiment of the invention.
Fig. 3 is a flowchart of an antenna control method according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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 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, which is a block diagram of an antenna control apparatus 100 according to an embodiment of the present invention, the antenna control apparatus 100 is applied to a terminal. The terminal in the embodiment of the invention can be an intelligent terminal such as a smart phone, a tablet computer, a Personal Digital Assistant (PDA), a smart watch and the like.
The antenna control apparatus 100 includes a switching module 10, a plurality of matching networks 20, and a processing module 30. In the embodiment of the present invention, the number of the plurality of matching networks 20 shown in fig. 1 is 4. However, in other embodiments of the present invention, the number of the plurality of matching networks 20 may be 2, 3, or 4 or more.
One ends of the plurality of matching networks 20 are electrically connected to the antenna 900 of the terminal through the switch module 10, and the other ends of the plurality of matching networks 20 are grounded.
A processing module 30, configured to control the switch module 10 to switch the antenna 900 to be electrically connected to an initial matching network of the multiple matching networks 20, when detecting that a peripheral interface (not shown) of the terminal is changed from an unplugged state to a plugged state, to switch the antenna 900 to be electrically connected to a preset matching network of the multiple matching networks 20; the preset matching network is matched with the transmitting frequency band or the receiving frequency band of the antenna 900 acquired by a radio frequency processor (not shown) of the terminal.
In a non-limiting embodiment of the present invention, each matching network 20 of the plurality of matching networks 20 comprises a capacitance and/or an inductance. Typically, each matching network 20 of the plurality of matching networks 20 comprises a capacitance.
As a limited embodiment, the matching between the preset matching network and the transmission frequency band or the reception frequency band of the antenna 900 acquired by the radio frequency processor of the terminal includes: the capacitance value of the preset matching network is matched with the transmitting frequency band or the receiving frequency band of the antenna 900 acquired by the radio frequency processor of the terminal.
In a non-limiting embodiment of the present invention, the peripheral interface of the terminal includes an earphone interface or a USB interface of the terminal. It should be noted that, in the prior art, peripheral interfaces such as an earphone interface and/or a USB interface may exist around the antenna 900 (e.g., a lower-end antenna of a terminal), and when a peripheral accessory such as an earphone is inserted into the earphone interface or an external device is inserted into the USB interface through a USB data line, the environment of the antenna may be deteriorated, so that the performance of the antenna may be deteriorated, that is, the radiation efficiency of the antenna may be reduced.
In the embodiment of the present invention, when it is detected that the peripheral interface of the terminal is changed from the unplugged state to the plugged state, the processing module 30 controls the switch module 10 to switch the electrical connection between the antenna 900 and the initial matching network of the multiple matching networks 20 to the electrical connection between the antenna 900 and the preset matching network of the multiple matching networks 20; wherein the predetermined matching network is matched to the transmission frequency band or the reception frequency band of the antenna 900. Accordingly, the antenna 900 is electrically connected to the optimal matching network 20, thereby improving the radiation efficiency of the antenna 900.
Referring to fig. 1 and 2, the processing module 30 includes an application processor 32 and a communication processor 34. The application processor 32 is electrically connected to the communication processor 34, the communication processor 34 is electrically connected to the rf processor 800 of the terminal, and the rf processor 800 is electrically connected to the antenna 900.
The application processor 32 is configured to generate a state change instruction when detecting that the peripheral interface of the terminal is changed from the non-plugged state to the plugged state.
The communication processor 34 is configured to obtain the transmitting frequency band or the receiving frequency band of the antenna detected by the radio frequency processor 800 according to the state change instruction, and control the switch module 10 to electrically connect the antenna with a preset matching network of the plurality of matching networks 20 through the control interface.
As a non-limiting example, the control interface is a general purpose Input Output interface (GPIO) or a Mobile Industry Processor Interface (MIPI).
Please refer to fig. 3, which is a flowchart illustrating an antenna control method 200 according to an embodiment of the present invention. The antenna control method 200 is applied to the antenna control apparatus 100, that is, the antenna control method 200 corresponds to the antenna control apparatus 100. The antenna control method 200 is applied to a terminal including a switch module 10, a plurality of matching networks 20 and a processing module 30, wherein one ends of the matching networks 20 are electrically connected with an antenna 900 of the terminal through the switch module 10, and the other ends of the matching networks 900 are grounded.
The antenna control method 200 includes step 202, step 204, and step 206.
Step 202: the insertion state of the peripheral interface of the terminal is detected by the processing module 30.
Step 204: whether the peripheral interface of the terminal is changed from the non-inserted state to the inserted state is judged by the processing module 30. If yes, go to step 206. If not, the process returns to step 202.
Step 206: the processing module 30 controls the switch module 10 to switch the antenna 900 to be electrically connected with an initial matching network of the plurality of matching networks 20 into the antenna 900 to be electrically connected with a preset matching network of the plurality of matching networks 20; the preset matching network is matched with the transmitting frequency band or the receiving frequency band of the antenna 900 acquired by the radio frequency processor of the terminal.
In a non-limiting embodiment of the present invention, the peripheral interface of the terminal includes an earphone interface or a USB interface of the terminal.
In a non-limiting embodiment of the present invention, in step 204 and step 206, the processing module 30 determines whether the peripheral interface of the terminal is changed from the non-plugged state to the plugged state; if yes, the step of controlling the switch module 10 to switch the antenna 900 to be electrically connected to the initial matching network of the multiple matching networks 20 through the processing module 30 to switch the antenna 900 to be electrically connected to the preset matching network of the multiple matching networks 20 includes: judging whether the peripheral interface of the terminal is changed from the non-insertion state to the insertion state by the application processor 32; if yes, a state change instruction is generated by the application processor 32; and controlling the communication processor 34 to acquire the transmitting frequency band or the receiving frequency band of the antenna 900 detected by the radio frequency processor 800 according to the state change instruction, and enabling the communication processor 34 to control the switch module 10 to switch the electrical connection between the antenna 900 and the initial matching network of the plurality of matching networks 20 into the electrical connection between the antenna 900 and the preset matching network of the plurality of matching networks 20 through the control interface.
As non-limiting examples, the control interface is a general purpose Input Output interface (GPIO) or a Mobile Industry Processor Interface (MIPI).
The embodiment of the invention relates to the technical field of antennas, in particular to an intelligent antenna switching scheme. The antenna switching scheme comprises a traditional antenna feed source and a matching circuit, and also comprises an antenna tunable switching device required for expanding the bandwidth of an antenna frequency band, wherein the tunable switching device comprises an SPST (single-pole single-throw), an SPDT (single-pole double-throw), an SP4T (single-pole four-throw) or a variable capacitor, and the tunable switching device is controlled by GPIO or MIPI (general purpose input/output) and realizes different switch connection states by changing the GPIO or MIPI states.
In a normal working state (i.e. the earphone or the USB is not plugged), the antenna is already well tuned according to the environment where the antenna is located, and the state of the tunable switch device is fixed. When the earphone is inserted, the Application Processor (AP) can know the status, and sends an instruction to the Communication Processor (CP) through software, so that the CP controls the antenna tunable device to change the status.
The mobile phone frame antenna is connected back to the ground through an SP4T switch, for example, a matching network RF1 switch state selected by the antenna in an FDD-LTE B3 starting state, when the AP detects that an earphone is inserted, the antenna performance is deteriorated due to the conversion performance of the external environment, the electronic device (capacitor/inductor/resistor) connected to the matching network RF1 at the moment cannot meet the antenna performance in the earphone insertion state, the AP needs to send a command to the CP, and the CP sends a change command to a control unit (through GPIO or MIPI) of the antenna switch, so that the antenna radiation efficiency is changed to other return paths such as the matching network RF2/RF3/RF4, and the antenna radiation efficiency is higher. For example, matching network RF1 originally connected in series with a capacitance of, for example, 0.5pf, when the external environment of the antenna becomes worse after the earphone is inserted, and the capacitance is not the best matching circuit, the matching network RF2 that makes the performance better is found by testing the antenna active index TRP (total radiated power) and TIS (total radiated sensitivity: total isotropic sensitivity) in the microwave darkroom, for example, 1pf capacitance, and the modem software makes the judgment: when the AP detects that the earphone is inserted, the AP sends a port change instruction of the antenna tuning device to the CP under the working frequency band, so that the antenna performance under the earphone insertion state is improved. As a non-limiting example of the embodiment of the present invention, the initial matching network of the plurality of matching networks is, for example, matching network RF1, and the default matching network of the plurality of matching networks is, for example, matching network RF 2.
Therefore, the back earth path with higher antenna radiation efficiency is changed to other paths such as matching network RF2/RF3/RF4, for example, a capacitor such as 0.5pf originally connected in series with the matching network RF1, when the external environment of the antenna is degraded after the earphone is inserted, so that the capacitance value is not the best matching circuit, and the capacitor such as 1pf on the matching network RF2 can be changed to make the antenna radiation efficiency higher and the performance better.
Not only the earphone insertion can be detected, but also the USB insertion can also be used for detecting and changing the state of a tuning switch device used in an antenna circuit in the mode.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (8)
1. An antenna control apparatus, applied to a terminal, the antenna control apparatus comprising:
a switch module;
one ends of the matching networks are electrically connected with the antenna of the terminal through the switch module, and the other ends of the matching networks are grounded;
the processing module is used for controlling the switch module to switch the electric connection between the antenna and an initial matching network in the matching networks into the electric connection between the antenna and a preset matching network in the matching networks when the peripheral interface of the terminal is detected to be changed from the non-inserted state to the inserted state; the preset matching network is matched with a transmitting frequency band or a receiving frequency band of the antenna acquired through a radio frequency processor of the terminal;
the processing module comprises an application processor and a communication processor;
the application processor is used for generating a state change instruction when detecting that the peripheral interface of the terminal is changed from a non-insertion state to an insertion state;
the communication processor is used for acquiring the transmitting frequency band or the receiving frequency band of the antenna detected by the radio frequency processor according to the state change instruction and switching the antenna to be electrically connected with the initial matching network in the plurality of matching networks to be electrically connected with the preset matching network in the plurality of matching networks through the control interface control switch module.
2. The antenna control apparatus of claim 1, wherein: the peripheral interface of the terminal comprises an earphone interface or a USB interface of the terminal.
3. The antenna control apparatus of claim 1, wherein: each matching network of the plurality of matching networks includes a capacitance and/or an inductance.
4. The antenna control apparatus of claim 1, wherein: the control Interface is a General Purpose Input/Output Interface (GPIO) or a Mobile Industry Processor Interface (MIPI).
5. The antenna control device according to claim 1, wherein the matching of the predetermined matching network with the transmission frequency band or the reception frequency band of the antenna acquired by the rf processor of the terminal includes:
and the capacitance value of the preset matching network is matched with the transmitting frequency band or the receiving frequency band of the antenna acquired by the radio frequency processor of the terminal.
6. The antenna control method is characterized by being applied to a terminal comprising a switch module, a plurality of matching networks and a processing module, wherein one ends of the matching networks are electrically connected with an antenna of the terminal through the switch module, and the other ends of the matching networks are grounded; the antenna control method comprises the following steps:
judging whether the peripheral interface of the terminal is changed from a non-insertion state to an insertion state through a processing module;
if the antenna is electrically connected with the initial matching network in the plurality of matching networks, the switch module is controlled by the processing module to switch the electrical connection between the antenna and the preset matching network in the plurality of matching networks; the preset matching network is matched with a transmitting frequency band or a receiving frequency band of the antenna acquired through a radio frequency processor of the terminal;
the processing module comprises an application processor and a communication processor; the processing module judges whether the peripheral interface of the terminal is changed from a non-insertion state to an insertion state; if the antenna is electrically connected with the initial matching network in the plurality of matching networks, the step of controlling the switch module to switch the antenna to be electrically connected with the preset matching network in the plurality of matching networks through the processing module comprises the following steps:
judging whether the peripheral interface of the terminal is changed from a non-insertion state to an insertion state through an application processor;
if the judgment result is yes, generating a state change instruction through the application processor; and controlling the communication processor to acquire the transmitting frequency band or the receiving frequency band of the antenna detected by the radio frequency processor according to the state change instruction, and enabling the communication processor to control the switch module to switch the antenna to be electrically connected with the initial matching network in the plurality of matching networks into the antenna to be electrically connected with the preset matching network in the plurality of matching networks through the control interface.
7. The antenna control method of claim 6, wherein: the peripheral interface of the terminal comprises an earphone interface or a USB interface of the terminal.
8. The antenna control method of claim 6, wherein: the control Interface is a General Purpose Input/Output Interface (GPIO) or a Mobile Industry Processor Interface (MIPI).
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| CN201810595042.2A CN109039348B (en) | 2018-06-11 | 2018-06-11 | Antenna control method and antenna control device |
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| CN109495119B (en) * | 2018-12-28 | 2021-08-10 | Tcl移动通信科技（宁波）有限公司 | Radio frequency switch control method, device, mobile terminal and storage medium |
| CN112134992B (en) * | 2019-06-25 | 2021-08-24 | 北京小米移动软件有限公司 | Terminal device and control method thereof |
| CN110971762B (en) * | 2019-12-09 | 2021-03-16 | 歌尔科技有限公司 | Communication frequency setting method, earphone, base and cordless communication device |
| CN113099028A (en) * | 2021-03-09 | 2021-07-09 | 惠州Tcl移动通信有限公司 | Mobile phone-based antenna tuner adjusting method and device, terminal equipment and medium |
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| JP2001077719A (en) * | 1999-09-07 | 2001-03-23 | Nec Saitama Ltd | Portable telephone set capable of having antenna impedance variation compensation |
| CN101115317A (en) * | 2006-07-28 | 2008-01-30 | 鸿富锦精密工业（深圳）有限公司 | Earphone impedance adjustable earphone |
| CN104038257A (en) * | 2014-06-18 | 2014-09-10 | 深圳市中兴移动通信有限公司 | Antenna multiplexing method and device of mobile terminal |
| CN106299609A (en) * | 2016-10-10 | 2017-01-04 | 广东欧珀移动通信有限公司 | The method and apparatus realizing antenna tuning |
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