CN209805817U - Tuning circuit and mobile terminal - Google Patents
Tuning circuit and mobile terminal Download PDFInfo
- Publication number
- CN209805817U CN209805817U CN201920523905.5U CN201920523905U CN209805817U CN 209805817 U CN209805817 U CN 209805817U CN 201920523905 U CN201920523905 U CN 201920523905U CN 209805817 U CN209805817 U CN 209805817U
- Authority
- CN
- China
- Prior art keywords
- antenna
- radio frequency
- base station
- capacitor
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Transceivers (AREA)
Abstract
A tuning circuit and a mobile terminal are provided, the tuning circuit comprises: a first antenna and a second antenna for communicating with a base station; the radio frequency switch module is connected with the first antenna and the second antenna and used for switching the first antenna or the second antenna to conduct according to the frequency band of a signal sent by the base station so as to enable the first antenna to be communicated with the base station or the second antenna to be communicated with the base station; the control module is connected with the radio frequency switch module and used for detecting and generating a control signal according to the signal intensity sent by the base station so as to adjust the resonant frequency of the first antenna or the resonant frequency of the second antenna through the radio frequency switch module; the tuning circuit in the embodiment can automatically select the first antenna or the second antenna according to the communication state of the base station, so that the frequency of the antenna can be reasonably distributed in each radiation field; the first antenna and the second antenna can keep the best communication state in each signal frequency band, and the optimization of circuit performance is realized.
Description
Technical Field
the utility model belongs to the technical field of the electronic circuit, especially, relate to a tuned circuit and mobile terminal.
background
With the continuous maturation and high-speed development of the communication technology of the current electronic circuit, the communication quality of the electronic equipment has an important influence on the integrity and safety of the circuit function; the electronic equipment needs to communicate with the external equipment through the antenna so that the electronic equipment can complete corresponding circuit actions according to the actual requirements of technicians, and then the technicians need to reasonably set the positions of the antennas in the electronic equipment so as to ensure that the electronic equipment and the external equipment perform real-time data communication; the antenna on the electronic device will regulate the transmission process and signal integrity of the communication signal so that the electronic device is in different communication states; the electronic device is applicable to various different communication environments and maintains a normal communication state.
However, as electronic devices are more integrated in electronic design, and the circuit functions implemented by the electronic devices are more complex; the radiation space of the antenna in the electronic device is continuously compressed, and the environment of the antenna in the electronic device becomes worse; in addition, in consideration of the design difficulty of an integrated circuit in the electronic device, the traditional technology is also a single invariable and definite mode for the placement of the antenna position in the electronic device, and the mode of solidifying the antenna position can seriously cause that the radiation efficiency of the antenna and the signal bandwidth of the antenna can not meet the actual design requirements of technicians, thereby reducing the communication quality and the communication efficiency of the electronic device, and greatly influencing the use experience of users on the electronic device.
Therefore, the antenna design in the conventional technology cannot meet the space requirement of the electronic equipment, the communication efficiency of the antenna and the external equipment is low, the flexibility is poor, and the information interaction quality between the electronic circuit and the external equipment is reduced.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a tuning circuit and mobile terminal aims at solving the communication quality of antenna among the traditional technical scheme and is lower, and antenna position among the electronic circuit is fixed, and the signal transmission process between antenna and the external equipment can receive external environment factor's interference, leads to the obstructed problem of information interaction process.
A first aspect of the embodiments of the present invention provides a tuning circuit, including:
A first antenna and a second antenna for communicating with a base station;
The radio frequency switch module is connected with the first antenna and the second antenna and used for switching the first antenna or the second antenna to conduct according to the frequency band of a signal sent by the base station so as to enable the first antenna to be communicated with the base station or the second antenna to be communicated with the base station; and
and the control module is connected with the radio frequency switch module and used for detecting and generating a control signal according to the signal strength sent by the base station so as to adjust the resonant frequency of the first antenna or the resonant frequency of the second antenna through the radio frequency switch module.
In one embodiment, the control module comprises a control chip;
The input end and the output end of the control chip are both connected with the radio frequency switch module.
In one embodiment, the rf switch module comprises:
the switch unit is connected with the control module, the first antenna and the second antenna, and is used for switching the first antenna or the second antenna to conduct according to the frequency band of the signal sent by the base station and adjusting the resonant frequency of the first antenna or the resonant frequency of the second antenna according to the control signal;
the first signal processing unit is connected between the switch unit and the first antenna and is used for filtering the communication signal transmitted by the first antenna; and
And the second signal processing unit is connected between the switch unit and the second antenna and is used for filtering the communication signal transmitted by the second antenna.
in one embodiment thereof, the switching unit includes:
the radio frequency processing chip comprises a radio frequency processing chip, a first capacitor and a second capacitor;
A first radio frequency end of the radio frequency processing chip is connected with the first signal processing unit, a second radio frequency end of the radio frequency processing chip is connected with the second signal processing unit, a third radio frequency end of the radio frequency processing chip is connected with the first antenna and the second antenna, and a fourth radio frequency end of the radio frequency processing chip is connected with the first antenna and the second antenna;
The grounding end of the radio frequency processing chip is grounded; the control end of the radio frequency processing chip and the first end of the first capacitor are connected to the control module in common, and the second end of the first capacitor is grounded; the power supply end of the radio frequency processing chip and the first end of the second capacitor are connected to a first direct current power supply in a shared mode, and the second end of the second capacitor is grounded.
In one embodiment thereof, the first signal processing unit includes:
A third capacitor, a first inductor and a second inductor;
The first end of the third capacitor and the first end of the first inductor are connected to the first antenna in common, and the second end of the first inductor is grounded; the second end of the third capacitor and the first end of the second inductor are connected to the switch unit in common, and the second end of the second inductor is grounded.
in one embodiment, the second signal processing unit includes:
The first resistor is connected with the first capacitor;
the first end of the first resistor and the first end of the fourth capacitor are connected to the switch unit in common, and the second end of the fourth capacitor is grounded; the first end of the second resistor and the first end of the fifth capacitor are connected to the second end of the first resistor in common, and the second end of the fifth capacitor is grounded; the second end of the second resistor and the first end of the sixth capacitor are connected to the second antenna in common, and the second end of the sixth capacitor is grounded.
In one embodiment, the radio frequency processing chip has a model number of: SKY 13306.
In one embodiment, the first antenna is a main antenna and the second antenna is a stepped antenna.
A second aspect of the embodiments of the present invention provides a mobile terminal, including:
a tuning circuit as described above; and
a housing for enclosing the tuning circuit.
In one embodiment, the mobile terminal includes any one of a mobile phone, a tablet computer and a notebook computer;
And the first antenna and the second antenna are respectively arranged at preset positions of the mobile terminal.
The tuning circuit automatically switches the working state of the first antenna and the working state of the second antenna according to the frequency band of a signal sent by the base station through the radio frequency switch module, so that the first antenna or the second antenna is in matched communication with the base station, the frequency of the first antenna and the frequency of the second antenna can be reasonably distributed in each space radiation area, and the intelligent tuning function between the antennas and the base station is realized; the control module performs self-adaptive adjustment on the resonant frequency of the first antenna or the resonant frequency of the second antenna according to the strength of the signal sent by the base station, so that the first antenna and the second antenna are positioned at the optimal resonant frequency point, and the communication quality and the communication efficiency of the first antenna and the second antenna are improved; in each signal frequency band, the first antenna or the second antenna and the base station can be in the best communication state, and the tuning circuit can realize more complete and safe circuit function; therefore, the working states of the first antenna and the second antenna can be adaptively adjusted according to the communication performance of the base station, the first antenna, the second antenna and the base station have the optimal information interaction performance, and a more complete circuit function can be realized by combining the tuning circuit and the base station, so that different circuit function requirements of technicians are met; the communication performance of the first antenna and the communication performance of the second antenna have higher flexibility and compatibility.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a tuning circuit according to an embodiment of the present invention;
Fig. 2 is a schematic structural diagram of a radio frequency switch module according to an embodiment of the present invention;
Fig. 3 is a schematic circuit diagram of a switch unit according to an embodiment of the present invention;
Fig. 4 is a schematic circuit diagram of a first signal processing unit according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a second signal processing unit according to an embodiment of the present invention;
Fig. 6 is a schematic structural diagram of a 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 more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a schematic structural diagram of a tuning circuit 10 according to an embodiment of the present invention is that the tuning circuit 10 can adaptively change its frequency band, so that the tuning circuit 10 and a base station are in an optimal communication state; for convenience of explanation, only the parts related to the present embodiment are shown, and detailed as follows:
The tuning circuit 10 includes: a first antenna 101, a second antenna 102, a radio frequency switch module 103, and a control module 104.
Wherein the first antenna 101 and the second antenna 102 communicate with the base station 20.
it should be noted that the base station 20 is used as a switching center for mobile communication, and can implement radio transceiving operation of communication signals; the base station 20 can transfer and transmit various communication signals, so that the communication signals can be transmitted at a remote geographical position, and the base station 20 can keep the original frequency and the original information of the communication signals; the base station 20 greatly secures the security and stability of the communication system.
The antenna is used as a converter, corresponding guided waves can be transmitted through the antenna, and communication information is converted into electromagnetic waves capable of being wirelessly transmitted, or the antenna carries out reverse conversion on the communication information; the antenna can be used as a basic component for transmitting and receiving communication signals; in the present embodiment, the first antenna 101 and the second antenna 102 are in wireless communication with the base station 20, so that a stable signal transmission state can be maintained between the tuning circuit 10 and the base station 20, when the first antenna 101 and the second antenna 102 perform signal interaction with the base station 20, the first antenna 101 and the second antenna 102 can transmit corresponding communication information, and the tuning circuit 10 has extremely high communication compatibility and signal transmission performance.
the radio frequency switch module 103 is connected to the first antenna 101 and the second antenna 102, and configured to switch the first antenna 101 or the second antenna 102 to be conducted according to a frequency band of a signal sent by the base station 20, so that the first antenna 101 communicates with the base station 20 or the second antenna 102 communicates with the base station 20.
The first antenna 101 and the second antenna 102 have respective resonant frequencies, and the first antenna 101 and the second antenna 102 can maintain optimal signal transmission performance in different frequency band environments to realize an optimal communication function; and a first relative position between the first antenna 101 and the base station 20 and a second relative position between the second antenna 102 and the base station 20, there is a large difference between the first relative position and the second relative position, resulting in a large difference between the signal sent by the base station 20 received by the first antenna 101 and the signal sent by the base station 20 received by the second antenna 102; therefore, in this embodiment, the radio frequency switch module 103 may select to switch the first antenna 101 to be conducted and the second antenna 102 to be conducted according to the signal frequency band requirement sent by the base station 20, so that the first antenna 101 or the second antenna 102 enters a communication state; therefore, the first antenna 101 or the second antenna 102 can perform adaptive frequency matching with the base station 20 according to the frequency band of the signal, and the antenna in the tuning circuit 10 and the base station 20 maintain a complete signal communication state; furthermore, in this embodiment, the radio frequency switch module 103 performs reasonable frequency band switching on the first antenna 101 and the second antenna 102, so that the frequency of the first antenna 101 and the frequency of the second antenna 102 are distributed in each radiation area, thereby implementing the function of intelligent antenna tuning.
The control module 104 is connected to the radio frequency switch module 103, and is configured to detect and generate a control signal according to the signal strength sent by the base station 20, so as to adjust the resonant frequency of the first antenna 101 or the resonant frequency of the second antenna 102 through the radio frequency switch module 103.
Optionally, the resonant frequency of the first antenna 101 or the resonant frequency of the second antenna 102 is changed by the radio frequency switch module 103 to adjust the communication quality between the tuning circuit 10 and the base station 20.
The control module 104 has a centralized control performance, so that the radio frequency switch module 103 can change the signal transmission state of the antenna in real time; when the signal strength sent by the base station 20 changes, the control signal output by the control module 104 contains corresponding control information, and the signal transmission state of the first antenna 101 or the second antenna 102 can be indirectly changed through the control signal, so that the first antenna 101 or the second antenna 102 realizes signal communication with the base station 30 in the most suitable frequency band, the information integrity when the antennas communicate with the base station 20 is maintained, and the interference caused by external environment noise to the communication process of the first antenna 101 and the second antenna 102 is prevented; therefore, in this embodiment, the control module 104 changes the working state of the rf switch module 103 in real time according to the actual signal transmission requirement, the antenna and the base station 20 are in the optimal signal transmission state, the first antenna 101 or the second antenna 102 can receive the signal sent by the base station 20 in real time and quickly, and the tuning circuit 10 can implement a more precise circuit function; furthermore, the first antenna 101 and the second antenna 102 in this embodiment have the best signal transmission performance, and the useless antenna resonance points are removed, thereby improving the communication efficiency between the tuning circuit 10 and the base station 20.
Fig. 1 shows a schematic structure of a tuning circuit 10, and in combination with a complete communication function between a first antenna 101 and a second antenna 102 and a base station 20, a radio frequency switch module 103 may enable the first antenna 101 or the second antenna 102 and the base station 20 to maintain an optimal communication state according to a frequency band of a signal transmitted by the base station 20, and the frequency bands of the first antenna 101 and the second antenna 102 may be reasonably distributed at various spatial positions, so as to achieve that the antenna performance of each frequency band is maintained to be optimal, and a signal transmitted by the base station 20 may be adaptively and accurately received through the first antenna 101 or the second antenna 102; the control module 104 can adaptively change the working state of the radio frequency switch module 103 according to the signal strength sent by the base station 20, and the signal frequency band of the first antenna 101 or the second antenna 102 can be changed in time through the radio frequency switch module 103, the first antenna 101 and the second antenna 102 can reach the optimal antenna resonance point, and the communication signal can keep the optimal signal transmission state and signal transmission quality between the radio frequency switch module 103 and the base station 20, so that the tuning circuit 10 and the base station 20 have an excellent communication coupling state, and the communication state of the first antenna 101 and the second antenna 102 is intelligently adjusted according to the signal strength sent by the base station 20, so that the first antenna 101 or the second antenna 102 can completely receive and send signals, and a more complete and effective circuit function can be kept by combining the tuning circuit 10 and the base station 20; therefore, the tuning circuit 10 in this embodiment has a relatively simplified spatial structure, intelligently adjusts the resonant frequency of the first antenna 101 or the resonant frequency of the second antenna 102 according to the state of the signal sent by the base station 20, and selects the first antenna 101 or the second antenna 102 in real time to implement an intelligent communication function with the base station 20, so that the intelligent tuning performance of the first antenna 101 and the second antenna 102 is improved, and the communication quality and the communication efficiency between the tuning circuit 10 and the base station 20 are better; the problems that in the prior art, the flexibility of the communication state of the antenna is low, the communication quality and the communication efficiency are low, the signal transmission state of the antenna is easily interfered by external environment factors, and the user experience is low are effectively solved.
As an alternative embodiment, the control module 104 includes: a control chip; the input end and the output end of the control chip are both connected with the radio frequency switch module 103.
optionally, the model of the control chip is; MT6737, MT6739 or MT 6762; the signal strength information sent by the base station 20 can be obtained in real time through the control chip, and then the working state of the radio frequency switch module 103 is changed in time after the signal strength of the base station 20 is analyzed and processed through the control chip, so that the first antenna 101 or the second antenna 102 can keep the best communication state with the base station 20 in the most suitable frequency band; therefore, the control chip has excellent signal processing and analysis performance, and the internal circuit structure of the tuning circuit 10 is further simplified.
As an alternative implementation, fig. 2 shows a schematic structure of the radio frequency switch module 103 provided in this embodiment, please refer to fig. 2, where the radio frequency switch module 103 includes: a switching unit 1031, a first signal processing unit 1032, and a second signal processing unit 1033.
The switch unit 1031 is connected to the control module 104, the first antenna 101, and the second antenna 102, and is configured to switch the first antenna 101 or the second antenna 102 to conduct according to a frequency band of a signal transmitted by the base station 20, and adjust a resonant frequency of the first antenna 101 or a resonant frequency of the second antenna 102 according to a control signal.
The first antenna 101 or the second antenna 102 is selected according to the frequency band of the signal sent by the base station 20 through the switch unit 1031 to maintain the communication state in the optimum frequency band, the switch unit 1031 has flexible adjustment performance for the working state states of the first antenna 101 and the second antenna 102, and the first antenna 101 and the second antenna 102 have high adaptive adjustment performance; and when the control module 104 transmits the control information to the switch unit 1031, the switch unit 1031 adjusts the resonant frequency of the antenna in time according to the control information, so that the resonant frequency of the antenna is matched with the signal strength sent by the base station 20, the base station 20 and the antenna have better signal transmission performance and higher compatibility, and the problems of larger loss and communication signal distortion in the signal transmission process between the base station 20 and the antenna are prevented.
the first signal processing unit 1032 is connected between the switching unit 1031 and the first antenna 101, and is configured to perform filtering processing on the communication signal transmitted by the first antenna 101.
The second signal processing unit 1033 is connected between the switching unit 1031 and the second antenna 102, and is configured to perform filtering processing on the communication signal transmitted by the second antenna 102.
In the process of information interaction between the first antenna 101 or the second antenna 102 and the base station 20, the communication signal sent by the base station 20 has a large noise component, and the communication signal contains circuit communication information; therefore, in this embodiment, the communication signal transmitted by the first antenna 101 and the communication signal transmitted by the second antenna 102 are respectively filtered to eliminate the noise component in the communication signal, so that the tuning circuit 10 can receive a more complete and efficient communication signal through the first antenna 101 and the second antenna 102; when any one of the first antenna 101 and the second antenna 102 performs signal communication with the base station 20, the tuning circuit 10 and the base station 20 can maintain better communication quality, and can realize a more complete and secure circuit function according to a communication signal sent by the base station 20, and the signal intelligent processing performance of the tuning circuit 10 can be improved by combining the first signal processing unit 1032 and the second signal processing unit 1033, so that the application range is wider.
As an optional implementation manner, fig. 3 shows a schematic circuit structure of the switch unit 1031 provided in this embodiment, please refer to fig. 3, and the switch unit 1031 includes: the radio frequency processing chip U1, a first capacitor C1 and a second capacitor C2.
Wherein, the first rf PORT1 of the rf processing chip U1 is connected to the first signal processing unit 1032, and the first rf PORT1 of the rf processing chip U1 can change the communication state of the first antenna 101, so that the complete and real-time signal communication function between the first antenna 101 and the base station 20 can be maintained; the second rf PORT2 of the rf processing chip U1 is connected to the second signal processing unit 1033, the communication signal transmitted by the second antenna 102 can be accessed through the second rf PORT2 of the rf processing chip U1, and the communication state of the second antenna 102 can be changed by the rf processing chip U1 in real time, so that the optimal signal transmission state is maintained between the second antenna 102 and the base station 20; the third rf PORT3 of the rf processing chip U1 is connected to the first antenna 101 and the second antenna 102, and the fourth rf PORT4 of the rf processing chip U1 is connected to the first antenna 101 and the second antenna 102.
The ground terminal of the rf processing chip U1 is grounded to GND.
the control end CTRL1 of the rf processing chip U1 and the first end of the first capacitor C1 are commonly connected to the control module 104, the control module 104 outputs a control signal to the control end CTRL1 of the rf processing chip U1, and the operating state of the rf processing chip U1 can be changed in real time by the control signal, so that the rf processing chip U1 has extremely high control sensitivity and control response speed; the second terminal of the first capacitor C1 is connected to ground GND.
the power supply terminal VDD of the RF processing chip U1 and the first terminal of the second capacitor C2 are commonly connected to the first DC power supply, and the second terminal of the second capacitor C2 is grounded GND.
Optionally, the first dc power supply is a + 0.1-10V dc power supply, and dc power can be output through the first dc power supply to maintain a safe and stable working state of the rf processing chip U1.
Optionally, the model of the radio frequency processing chip U1 is: SKY 13306.
in the circuit structure of the switch unit 1031 shown in fig. 3, the switch unit 1031 has a simplified circuit structure, the rf processing chip U1 can implement more complete antenna control and communication functions, the rf processing chip U1 can control the frequency states of the first antenna 101 and the second antenna 102 in real time, better signal transmission performance is maintained between the first antenna 101 and the second antenna 102 and the base station 20, the rf processing chip U1 can adjust the distribution of the frequency of the first antenna 101 and the frequency of the second antenna 102 in each radiation area in real time, and the switch unit 1031 has higher control sensitivity.
As an alternative implementation, fig. 4 shows a schematic circuit structure of the first signal processing unit 1032 provided in this embodiment, please refer to fig. 4, where the first signal processing unit 1032 includes: a third capacitor C3, a first inductor L1, and a second inductor L2.
the first end of the third capacitor C3 and the first end of the first inductor L1 are connected to the first antenna 101, and the second end of the first inductor L1 is grounded to GND.
A second terminal of the third capacitor C3 and a first terminal of the second inductor L2 are commonly connected to the switch unit 1031, and a second terminal of the second inductor L2 is grounded to GND.
The electronic components in the first signal processing unit 1032 can perform high-precision filtering on the communication signal transmitted by the first antenna 101, and the first antenna 101 has higher signal transmission precision; moreover, the operating state of the first antenna 101 can be directly changed by the switch unit 1031, which ensures the control accuracy and control precision of the first antenna 101, and further has higher signal transmission performance between the first antenna 101 and the base station 20, and the switch unit 1032 in this embodiment has higher control accuracy and circuit compatibility.
As an alternative implementation, fig. 5 shows a schematic circuit structure of the second signal processing unit 1033 provided in this embodiment, please refer to fig. 5, where the second signal processing unit 1033 includes: a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a first resistor R1 and a second resistor R2.
a first end of the first resistor R1 and a first end of the fourth capacitor R4 are commonly connected to the switch unit 1031, and a second end of the fourth capacitor C4 is grounded to GND.
The first end of the second resistor R2 and the first end of the fifth capacitor C5 are commonly connected to the second end of the first resistor R1, and the second end of the fifth capacitor C5 is grounded GND.
the second terminal of the second resistor R2 and the first terminal of the sixth capacitor C6 are commonly connected to the second antenna 102, and the second terminal of the sixth capacitor C6 is grounded to GND.
When the second antenna 102 communicates with the base station 20, the fourth capacitor C4, the fifth capacitor C5 and the sixth capacitor C6 are combined to implement a signal filtering function, and the switching unit 1031 can change the resonant frequency of the second antenna 102 in time, so that the second antenna 102 can maintain a real-time communication function with the base station 20 in a suitable frequency band; the second signal processing unit 1033 has a relatively simplified circuit structure, maintains a good data communication function with the base station 20 through the second antenna 102, and communication efficiency and communication accuracy between the second antenna 102 and the base station 20 are higher, and control flexibility and control accuracy of the tuning circuit 10 are improved.
fig. 3 to fig. 5 show the circuit structure of the rf switch module 103, when the signal transmission state of the first antenna 101 and the signal transmission state of the second antenna 102 can be changed in real time by the rf communication chip U1, and the first signal processing unit 1032 and the second signal processing unit 1033 can ensure the operation accuracy of the antennas; specifically, when the control signal is transmitted to the control terminal CTRL1 of the rf processing chip U1, the internal signal transmission state of the rf processing chip U1 can be changed in real time by the control signal, and the 4 rf terminals (the first rf terminal PORT1, the second rf terminal PORT2, the third rf terminal PORT3, and the fourth rf terminal PORT4) of the rf processing chip U1 can form different signal conduction paths under the control of the control signal, so as to ensure the control accuracy of the rf processing chip U1; illustratively, the internal signal transmission path of the rf processing chip U1 can be changed in real time through the level state of the control signal, where table 1 shows the corresponding relationship between the on state of each rf terminal of the rf processing chip U1 and the level state of the control signal.
Table 1 correspondence between level state of control signal and connection state of each rf terminal
in table 1, the first level state is a high level state or a low level state, which is not limited to this, for example, when the first level state is a high level state, the second level state is a low level state, so that the internal signal transmission path of the rf processing chip U1 can be changed sensitively by controlling the level state of the signal, and the operating state of the rf processing chip U1 has higher operation sensitivity.
Referring to table 1, the rf processing chip U1 has different low-loss paths inside, and the rf processing chip U1 can control the first antenna 101 and the second antenna 102 to be in different frequency band states, respectively; for example, when the control signal is in the second level state, the first PORT1 is connected to the fourth PORT4 through a low loss path, and a low loss path is also provided between the second PORT2 and the third PORT 3; in contrast, when the control signal is in the first level state, the first PORT1 is connected to the third PORT3 through a low loss path, and there is also a low loss path between the second PORT2 and the fourth PORT 4; the radio frequency ends on the radio frequency processing chip U1 can be isolated to the maximum extent through the control signals, and the coupling among low-loss paths inside the radio frequency processing chip U1 is kept; therefore, the present embodiment can maintain high signal transmission efficiency between the first antenna 101 and the second antenna 102 by controlling the level state of the signal, and different signal transmission paths can be isolated from each other; the first antenna 101 and the second antenna 102 can maintain the best antenna performance in different frequency band environments, and the quality of the communication signal can be maintained at a high level.
as an alternative embodiment, the first antenna 101 is a main antenna, and the second antenna 102 is a stepped antenna.
The tuning circuit 10 in this embodiment changes the working modes of the main antenna and the hierarchical antenna respectively according to the spatial position requirements of the antennas, and the radio frequency switch module 103 can make the main antenna and the hierarchical antenna in the optimal working state in the reasonable frequency band, the frequency of the main antenna and the frequency of the hierarchical antenna can be reasonably distributed in each radiation area, the main antenna and the hierarchical antenna can be in the optimal signal transmission state in each communication frequency environment, the tuning circuit 10 and the base station 20 have extremely high information transmission integrity, the design flexibility of the main antenna and the hierarchical antenna is also higher, and the signal transmission loss between the base station 20 and the antennas is reduced; therefore, the present embodiment combines the main antenna and the hierarchical antenna to achieve the purpose of optimal information transmission.
fig. 6 shows a schematic structure of the mobile terminal 60 provided in this embodiment, and referring to fig. 6, the mobile terminal 60 includes: the tuning circuit 10 and the housing 601 as described above.
The housing 601 is used for encapsulating the tuning circuit 10 to protect the working safety of the tuning circuit 10; illustratively, the housing 601 is a glass cover plate; the housing 601 is arranged outside the first antenna 101 and the second antenna 102, the housing 601 can protect the circuit, and the housing 601 can prevent each circuit module such as the first antenna 101 and the second antenna 102 from being impacted by external physical damage; the first antenna 101 or the second antenna 102 and the base station 20 can maintain a safe and stable data communication function, and signals can maintain a real-time transmission function between the mobile terminal 60 and the base station 20, so that the first antenna 101 and the second antenna 102 have higher communication safety and communication stability. The security of the mobile terminal 60 is prevented from being greatly impacted by external physical damage.
As an alternative embodiment, the mobile terminal 60 includes any one of a mobile phone, a tablet computer, and a notebook computer.
The first antenna 101 and the second antenna 102 are respectively disposed at predetermined positions of the mobile terminal 60.
specifically, the first antenna 101 and the second antenna 102 are distributed at different positions of the mobile terminal 60, so that a complete communication function can be maintained between the mobile terminal 60 and the base station 20, the communication information of the mobile terminal 60 in each spatial domain is distributed more uniformly, and the mobile terminal 60 has better signal adjustment performance and antenna design performance; when the first antenna 101 and the second antenna 102 are distributed at different positions in the mobile terminal 60, the radio frequency switch module 103 may switch the communication state of the first antenna 101 or the second antenna 102 in real time, so that the first antenna 101 or the second antenna 102 and the base station 20 maintain the optimal communication state in each frequency band, the first antenna 101 and the second antenna 102 have more reasonable frequency distribution in the surrounding area of the mobile terminal 60, and the mobile terminal 60 has higher communication quality and communication efficiency.
It should be noted that, each circuit module in the mobile terminal 60 in this embodiment corresponds to each circuit module of the tuning circuit 10 in fig. 1, and therefore, please refer to the embodiment of fig. 1 for a specific implementation of each circuit module in the mobile terminal 60 in this embodiment, which will not be described again here.
in the structural schematic of the mobile terminal 60 shown in fig. 6, the radio frequency switch module 103 can select any one of the first antenna 101 and the second antenna 102 to maintain normal communication with the base station 20 according to the frequency band of the signal sent by the base station 20, so that the first antenna 101 and the second antenna 102 maintain normal communication functions with the base station 20 in an optimal frequency band environment, the communication states of the first antenna 101 and the second antenna 102 have more flexible and accurate adjustable performance, and the communication quality of the mobile terminal 60 is better; the control module 104 can tune the first antenna 101 and the second antenna 102 in corresponding sub-bands in each frequency band, the first antenna 101 and the second antenna 102 can maintain the optimal communication state with the base station 20 in the respective adaptive frequency band, the communication signal strength between the mobile terminal 60 and the base station 20 is improved, the mobile terminal 60 can receive complete communication information through the first antenna 101 and the second antenna 102, the mobile terminal 60 has higher communication compatibility and stability, and better use experience is brought to a user; the problems that in the prior art, the communication quality of the antenna is damaged due to the fact that the position of the antenna of the mobile terminal is fixed, the flexibility of information interaction between the mobile terminal and the base station is poor, the communication information distribution of the mobile terminal is unreasonable, and the user experience is not high are effectively solved.
to sum up, the tuning circuit 10 dynamically selects the first antenna 101 and the second antenna 102 according to the signal frequency of the base station 20, so that the first antenna 101 or the second antenna 102 has an intelligent tuning function with the base station 20, and the frequencies of the antennas can be reasonably distributed in each radiation area; under the centralized control of the control module 104, the radio frequency switch module 103 can respectively adjust the frequency of the first antenna 101 or the frequency of the second antenna 102 according to the strength of the communication signal, so that the first antenna 101 and the second antenna 102 are in an optimal communication state, and the communication quality and the communication efficiency of the antennas are improved; therefore, the tuning circuit 10 of the present invention has a positive promoting effect on the development of antenna communication quality in the field, and will generate an important industrial value.
Various embodiments are described herein for various devices, circuits, apparatuses, systems, and/or methods. Numerous specific details are set forth in order to provide a thorough understanding of the overall structure, function, manufacture, and use of the embodiments as described in the specification and illustrated in the accompanying drawings. However, it will be understood by those skilled in the art that the embodiments may be practiced without such specific details. In other instances, well-known operations, components and elements have been described in detail so as not to obscure the embodiments in the description. It will be appreciated by those of ordinary skill in the art that the embodiments herein and shown are non-limiting examples, and thus, it can be appreciated that the specific structural and functional details disclosed herein may be representative and do not necessarily limit the scope of the embodiments.
Reference throughout the specification to "various embodiments," "in an embodiment," "one embodiment," or "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in various embodiments," "in some embodiments," "in one embodiment," or "in an embodiment," or the like, in places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, a particular feature, structure, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with features, structures, or characteristics of one or more other embodiments without presuming that such combination is not an illogical or functional limitation. Any directional references (e.g., plus, minus, upper, lower, upward, downward, left, right, leftward, rightward, top, bottom, above …, below …, vertical, horizontal, clockwise, and counterclockwise) are used for identification purposes to aid the reader's understanding of the present disclosure, and do not create limitations, particularly as to the position, orientation, or use of the embodiments.
Although certain embodiments have been described above with a certain degree of particularity, those skilled in the art could make numerous alterations to the disclosed embodiments without departing from the scope of this disclosure. Joinder references (e.g., attached, coupled, connected, and the like) are to be construed broadly and may include intermediate members between a connection of elements and relative movement between elements. Thus, connection references do not necessarily imply that two elements are directly connected/coupled and in a fixed relationship to each other. The use of "for example" throughout this specification should be interpreted broadly and used to provide non-limiting examples of embodiments of the disclosure, and the disclosure is not limited to such examples. It is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative only and not limiting. Changes in detail or structure may be made without departing from the disclosure.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A tuning circuit, comprising:
a first antenna and a second antenna for communicating with a base station;
The radio frequency switch module is connected with the first antenna and the second antenna and used for switching the first antenna or the second antenna to conduct according to the frequency band of a signal sent by the base station so as to enable the first antenna to be communicated with the base station or the second antenna to be communicated with the base station; and
And the control module is connected with the radio frequency switch module and used for detecting and generating a control signal according to the signal strength sent by the base station so as to adjust the resonant frequency of the first antenna or the resonant frequency of the second antenna through the radio frequency switch module.
2. the tuning circuit of claim 1, wherein the control module comprises a control chip;
the input end and the output end of the control chip are both connected with the radio frequency switch module.
3. the tuning circuit of claim 1, wherein the radio frequency switch module comprises:
The switch unit is connected with the control module, the first antenna and the second antenna, and is used for switching the first antenna or the second antenna to conduct according to the frequency band of the signal sent by the base station and adjusting the resonant frequency of the first antenna or the resonant frequency of the second antenna according to the control signal;
The first signal processing unit is connected between the switch unit and the first antenna and is used for filtering the communication signal transmitted by the first antenna; and
And the second signal processing unit is connected between the switch unit and the second antenna and is used for filtering the communication signal transmitted by the second antenna.
4. The tuning circuit of claim 3, wherein the switching unit comprises:
The radio frequency processing chip comprises a radio frequency processing chip, a first capacitor and a second capacitor;
a first radio frequency end of the radio frequency processing chip is connected with the first signal processing unit, a second radio frequency end of the radio frequency processing chip is connected with the second signal processing unit, a third radio frequency end of the radio frequency processing chip is connected with the first antenna and the second antenna, and a fourth radio frequency end of the radio frequency processing chip is connected with the first antenna and the second antenna;
the grounding end of the radio frequency processing chip is grounded; the control end of the radio frequency processing chip and the first end of the first capacitor are connected to the control module in common, and the second end of the first capacitor is grounded; the power supply end of the radio frequency processing chip and the first end of the second capacitor are connected to a first direct current power supply in a shared mode, and the second end of the second capacitor is grounded.
5. The tuning circuit of claim 3, wherein the first signal processing unit comprises:
a third capacitor, a first inductor and a second inductor;
the first end of the third capacitor and the first end of the first inductor are connected to the first antenna in common, and the second end of the first inductor is grounded; the second end of the third capacitor and the first end of the second inductor are connected to the switch unit in common, and the second end of the second inductor is grounded.
6. The tuning circuit of claim 3, wherein the second signal processing unit comprises:
The first resistor is connected with the first capacitor;
the first end of the first resistor and the first end of the fourth capacitor are connected to the switch unit in common, and the second end of the fourth capacitor is grounded; the first end of the second resistor and the first end of the fifth capacitor are connected to the second end of the first resistor in common, and the second end of the fifth capacitor is grounded; the second end of the second resistor and the first end of the sixth capacitor are connected to the second antenna in common, and the second end of the sixth capacitor is grounded.
7. The tuning circuit of claim 4, wherein the radio frequency processing chip is of a type: SKY 13306.
8. The tuning circuit of claim 1, wherein the first antenna is a main antenna and the second antenna is a stepped antenna.
9. A mobile terminal, comprising:
A tuning circuit as claimed in any one of claims 1-8; and
A housing for enclosing the tuning circuit.
10. the mobile terminal according to claim 9, wherein the mobile terminal comprises any one of a mobile phone, a tablet computer and a notebook computer;
And the first antenna and the second antenna are respectively arranged at preset positions of the mobile terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920523905.5U CN209805817U (en) | 2019-04-17 | 2019-04-17 | Tuning circuit and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920523905.5U CN209805817U (en) | 2019-04-17 | 2019-04-17 | Tuning circuit and mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209805817U true CN209805817U (en) | 2019-12-17 |
Family
ID=68829949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920523905.5U Active CN209805817U (en) | 2019-04-17 | 2019-04-17 | Tuning circuit and mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209805817U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111682324A (en) * | 2020-06-22 | 2020-09-18 | 华勤通讯技术有限公司 | Circuit and method for reducing SAR of antenna |
| CN112351335A (en) * | 2020-06-17 | 2021-02-09 | 青岛智动精工电子有限公司 | Wireless communication television |
| CN112834831A (en) * | 2021-02-18 | 2021-05-25 | 中国第一汽车股份有限公司 | Antenna state detection circuit |
| CN114513219A (en) * | 2020-11-16 | 2022-05-17 | 深圳市万普拉斯科技有限公司 | Antenna device, mobile terminal and control method thereof |
-
2019
- 2019-04-17 CN CN201920523905.5U patent/CN209805817U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112351335A (en) * | 2020-06-17 | 2021-02-09 | 青岛智动精工电子有限公司 | Wireless communication television |
| CN112351335B (en) * | 2020-06-17 | 2023-05-09 | 青岛智动精工电子有限公司 | Wireless communication television |
| CN111682324A (en) * | 2020-06-22 | 2020-09-18 | 华勤通讯技术有限公司 | Circuit and method for reducing SAR of antenna |
| CN114513219A (en) * | 2020-11-16 | 2022-05-17 | 深圳市万普拉斯科技有限公司 | Antenna device, mobile terminal and control method thereof |
| CN112834831A (en) * | 2021-02-18 | 2021-05-25 | 中国第一汽车股份有限公司 | Antenna state detection circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209805817U (en) | Tuning circuit and mobile terminal | |
| CN105514624B (en) | A kind of mobile terminal antenna system and mobile terminal | |
| CN106299598A (en) | Electronic installation and many feed antennas thereof | |
| CN108429594B (en) | High-performance channel simulator radio frequency transceiver applied to 5G communication | |
| MX2014013713A (en) | Method for intelligently switching on/off mobile terminal antenna and corresponding mobile terminal. | |
| EP1396048A1 (en) | Tunable dual band antenna system | |
| CN103428314A (en) | Method for adjusting radiation direction of mobile terminal, and mobile terminal | |
| KR20020027636A (en) | Antenna arrangement and portable radio communication device | |
| CN104362425B (en) | A kind of mobile terminal of shared NFC antenna | |
| US11095029B2 (en) | Antenna device | |
| US12034498B2 (en) | Wireless power-receiving device with near field communication function | |
| CN201590488U (en) | Antenna self-adaptive matching circuit and mobile communication terminal with same | |
| TW201935767A (en) | Antenna device | |
| CN109560837B (en) | Method and system for operating a communication device communicating through inductive coupling | |
| CN209805818U (en) | Antenna switching circuit and wireless communication system | |
| CN106571526A (en) | Decoupling method and decoupling network of MIMO antenna of mobile communication system terminal | |
| CN103151584A (en) | Cavity filter, radio-frequency zooming-out equipment, signal receiving-transmitting device and tower top amplifier | |
| CN104701625B (en) | Possesses the antenna module of decoupling function, decoupling method conciliates coupled system | |
| US20180309525A1 (en) | System and wireless access device for improving received signal quality | |
| US20150200458A1 (en) | Wireless Communication Device | |
| CN104577357B (en) | A kind of antenna and mobile terminal | |
| CN206878181U (en) | The adjustable antenna of multimode multi-frequency dynamic | |
| CN214337902U (en) | Bluetooth radio frequency circuit and terminal equipment | |
| CN113922082A (en) | Antenna module applied to terminal equipment and terminal equipment | |
| CN105553500A (en) | Antenna matching circuit and electronic device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |