CN209805818U - Antenna switching circuit and wireless communication system - Google Patents
Antenna switching circuit and wireless communication system Download PDFInfo
- Publication number
- CN209805818U CN209805818U CN201920901376.8U CN201920901376U CN209805818U CN 209805818 U CN209805818 U CN 209805818U CN 201920901376 U CN201920901376 U CN 201920901376U CN 209805818 U CN209805818 U CN 209805818U
- Authority
- CN
- China
- Prior art keywords
- signal
- switching
- antenna
- communication
- module
- 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
- Radio Transmission System (AREA)
Abstract
An antenna switching circuit and a wireless communication system, the antenna switching circuit comprising: the first control module is used for outputting a frequency band switching signal; a radio frequency communication module for transmitting the main set signal and the diversity signal; an antenna module connected with the communication device for transmitting the main set signal and the diversity signal; the switching module is connected with the first control module, the radio frequency communication module and the antenna module and used for switching the communication state between the radio frequency communication module and the antenna module to a first communication state or a second communication state according to the frequency band switching signal; the antenna module comprises a first antenna unit and a second antenna unit; in a first communication state, the first antenna unit is used for transmitting a main set signal, and the second antenna unit is used for transmitting a diversity signal; in a second communication state, the first antenna unit is used for transmitting diversity signals, and the second antenna unit is used for transmitting main set signals; the antenna switching circuit flexibly adjusts the wireless transmission state of the main set signal and the diversity signal.
Description
Technical Field
the utility model belongs to the technical field of communication, especially, relate to an antenna switching circuit and wireless communication system.
Background
With the continuous development of electronic communication technology, an antenna communication mode has become a main mode for communication between electronic devices, and the antenna communication mode can convert a guided wave on a wired wire into an electromagnetic wave in a wireless medium, or receive the electromagnetic wave and convert the electromagnetic wave into a power signal in an electronic circuit so as to realize wireless signal interaction between the electronic devices; because the antenna communication mode has the advantages of long distance of wireless transmission, strong radiation efficiency of signals, high anti-interference performance and the like, the antenna communication is widely applied to various technical fields of broadcasting, televisions, navigation, remote sensing and the like, the quality of the antenna communication has extremely important influence on the safety and practical value of related electronic equipment, a plurality of electronic equipment transmit control information according to the antenna communication so as to realize a relatively complex circuit function, the antenna communication mode is also favorable for reducing the signal wireless transmission cost of a circuit system, and the high signal transmission efficiency can be kept among the internal electronic equipment of the circuit system.
However, the circuit functions implemented by the electronic devices become more and more complex, and then the antenna communication mode also shows diversification and high compatibility; for example, the antenna communication mode has gradually evolved from 3G to 4G, even 5G, and thus has higher data interaction performance and data transmission capacity; in order to enable the antenna communication mode to realize signal interaction performance in various severe environments, technicians transmit radio signals in different frequency bands in a frequency-division mode, respectively perform self-adaptive transmission on the radio signals in different frequency bands on various different antennas, and then summarize the signals transmitted on each antenna to obtain complete communication information; the traditional technology fixes the wireless signals of each frequency band on a specific antenna for transmission respectively, although compatible transmission of large-capacity wireless communication information can be realized, the signals of each frequency band and each antenna can only be transmitted in a fixed matching mode, which leads to serious loss of the communication quality of the wireless signals, the communication information contained in the wireless signals can be distorted to a large extent, the signal transmission integrity and compatibility of an antenna communication mode are reduced, and the requirement of high-precision signal transmission between electronic devices is difficult to meet.
In summary, the communication method in the conventional technology can only fix the sub-band signal on a specific antenna to transmit and receive the wireless signal, the flexibility of the wireless signal transmission process is low, the wireless signal has large distortion and frequency loss in the transmission process, and the practical performance of the electronic device is reduced.
SUMMERY OF THE UTILITY MODEL
in view of this, the embodiment of the utility model provides an antenna switching circuit and wireless communication system aims at solving among the traditional technical scheme antenna communication mode and can only fix sub-band signal and carry out transmission on specific antenna, and the flexibility is lower, leads to communication information to appear losing easily at wireless receiving and dispatching in-process, has reduced antenna communication quality's problem.
The utility model discloses a first aspect of the embodiment provides an antenna switching circuit, is connected with communication equipment, antenna switching circuit includes:
The first control module is used for outputting a frequency band switching signal;
a radio frequency communication module for transmitting the main set signal and the diversity signal;
an antenna module coupled to the communication device for transmitting the main and diversity signals; and
A switching module connected to the first control module, the radio frequency communication module, and the antenna module, and configured to switch a communication state between the radio frequency communication module and the antenna module to a first communication state or a second communication state according to the frequency band switching signal;
The antenna module comprises a first antenna unit and a second antenna unit;
in the first communication state, the first antenna unit is configured to transmit the main set signal, and the second antenna unit is configured to transmit the diversity signal;
in the second communication state, the first antenna unit is configured to transmit the diversity signal, and the second antenna unit is configured to transmit the main set signal.
In one embodiment, the radio frequency communication module comprises:
A first radio frequency communication unit for transmitting the main set signal; and
a second radio frequency communication unit for transmitting the diversity signal;
the switching module is specifically configured to:
setting a first signal transmission link between the first radio frequency communication unit and the first antenna unit according to a first frequency band switching signal;
Setting a second signal transmission link between the second radio frequency communication unit and the second antenna unit according to the first frequency band switching signal;
Setting a third signal transmission link between the second radio frequency communication unit and the first antenna unit according to a second frequency band switching signal;
And setting a fourth signal transmission link between the first radio frequency communication unit and the second antenna unit according to the second frequency band switching signal.
in one embodiment, the switching module includes a radio frequency switching chip:
a first radio frequency communication pin of the radio frequency switching chip is connected with the first antenna unit;
A second radio frequency communication pin of the radio frequency switching chip is connected with the second antenna unit;
A third radio frequency communication pin of the radio frequency switching chip is connected with the first radio frequency communication unit;
A fourth radio frequency communication pin of the radio frequency switching chip is connected with the second radio frequency communication unit;
A first switching control pin of the radio frequency switching chip is accessed into the first frequency band switching signal;
and a second switching control pin of the radio frequency switching chip is accessed into the second frequency band switching signal.
In one embodiment thereof, the first control module comprises:
The first switching signal output end, the second switching signal output end, the first capacitor and the second capacitor;
The first switching signal output end is used for outputting the first frequency band switching signal;
The second switching signal output end is used for outputting the second frequency band switching signal;
The first switching signal output end and the first end of the first capacitor are connected to the switching module in common;
The second switching signal output end and the first end of the second capacitor are connected to the switching module in common;
The second end of the first capacitor and the second end of the second capacitor are connected to the ground in common.
in one embodiment, the first antenna unit comprises:
the wireless communication device comprises a first wireless transceiving port, a wireless communication chip and a first resistor;
the grounding pin of the wireless communication chip is grounded;
A first signal transmission pin of the wireless communication chip is connected with the first wireless transceiving port, and the first wireless transceiving port is connected with the communication equipment;
And a second signal transmission pin of the wireless communication chip is connected with the first end of the first resistor, and the second end of the first resistor is connected with the switching module.
In one embodiment, the second antenna unit includes:
the second wireless transceiving port, the second resistor, the third capacitor and the fourth capacitor;
The second wireless transceiving port is connected with the communication device, the first end of the second resistor is connected with the second wireless transceiving port, the first end of the third resistor and the first end of the third capacitor are connected to the second end of the second resistor in a shared mode, the second end of the third resistor and the first end of the fourth capacitor are connected to the switching module in a shared mode, and the second end of the third capacitor and the second end of the fourth capacitor are connected to the ground in a shared mode.
In one embodiment, the antenna switching circuit further comprises:
and the power supply control module is connected with the switching module and used for outputting a power supply signal so as to supply power to the switching module.
in one embodiment, the power control module comprises:
A fifth capacitor and a power transmission terminal;
the power transmission terminal is used for outputting the power signal;
The power transmission end and the first end of the fifth capacitor are connected to the switching module in a shared mode, and the second end of the fifth capacitor is grounded.
in one embodiment, the frequency bands of the main set signal and the diversity signal do not overlap.
A second aspect of the embodiments of the present invention provides a wireless communication system, including:
The antenna switching circuit as described above; and
A communication device; the antenna switching circuit wirelessly communicates with the communication device.
The antenna switching circuit can realize wireless communication with the communication equipment, so that signals of different frequency bands can be transmitted through the first antenna unit and the second antenna unit respectively, the switching module can change the signal transmission states of the first antenna unit and the second antenna unit in real time under the centralized control of the first control module, and the main set signal and the diversity signal can be selected to be transmitted in any one of the first antenna unit and the second antenna unit according to the actual requirement of the communication environment so as to improve the transmission quality of the antenna signals; therefore, the antenna switching circuit can be compatible and suitable for various different communication environments, and the optimal wireless signal transmission effect is realized; the embodiment of the utility model provides an in antenna switching circuit can change the receiving and dispatching state of main signal and diversity signal at different antenna element in a flexible way, the radio signal of different frequency channels does not fix and transmits on specific antenna element, antenna switching circuit can ensure radio signal's transmission integrality and transmission compatibility, antenna switching circuit can in each different communication environment and between the communication equipment can keep high-quality wireless communication function, maneuverability is higher, antenna communication mode's precision and practical value have been improved.
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 an antenna switching circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an antenna switching circuit according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a switching module according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a first control module according to an embodiment of the present invention;
Fig. 5 is a schematic circuit diagram of a first antenna unit according to an embodiment of the present invention;
Fig. 6 is a schematic circuit diagram of a second antenna unit according to an embodiment of the present invention;
Fig. 7 is a schematic structural diagram of an antenna switching circuit according to an embodiment of the present invention;
fig. 8 is a schematic circuit diagram of a power control module according to an embodiment of the present invention;
Fig. 9 is a schematic structural diagram of a wireless communication system 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, in the antenna switching circuit 10 according to the embodiment of the present invention, the antenna switching circuit 10 is connected to the communication device 20, so that a stable wireless signal interaction function is maintained between the antenna switching circuit 10 and the communication device 20, and the transmission state of the sub-band signal can be changed through the antenna switching circuit 10, so that the antenna switching circuit 10 can perform wireless signal transmission in an optimal signal transmission channel, thereby improving the wireless signal transmission quality and transmission efficiency of the antenna switching circuit 10; for convenience of explanation, only the parts related to the present embodiment are shown, and detailed as follows:
the antenna switching circuit 10 includes: a first control module 101, a radio frequency communication module 102, an antenna module 103, and a switching module 104.
The first control module 101 is configured to output a band switching signal.
The frequency band switching signal includes frequency band switching information, so that the first control module 101 realizes a frequency band switching centralized control function in the antenna switching circuit 10, and the first control module 101 can directly operate the working state of the antenna switching circuit 10 through the frequency band switching signal, so that the antenna switching circuit 10 has higher control response rate and accuracy for the antenna communication state; optionally, the first control module 101 generates a frequency band switching signal according to an operation signal of a technician, the antenna switching circuit 10 can perform wireless signal interaction on the communication device 20 in an optimal communication state, and the first control module 101 can perform adaptive adjustment on an antenna communication process according to an operation instruction of the technician, thereby ensuring flexibility and practical value of a wireless signal receiving and transmitting state.
the rf communication module 102 is used to transmit the main set signal and the diversity signal.
the radio frequency communication module 102 has a function of transceiving communication signals, and can divide the communication signals into a main set signal and a diversity signal according to the frequency distribution of the communication signals so as to reduce energy fading of the communication signals in the transmission process; illustratively, the communication signal comprises a signal with continuously changing frequency band, the main set signal comprises a signal with a first frequency band, the diversity signal comprises a signal with a second frequency band, and the main set signal and the diversity signal respectively have different communication information, and complete and safe communication information can be obtained only by combining the main set signal and the diversity signal; according to the transmission characteristics of the signals, the communication signals of each frequency band have signal transmission channels matched with the communication signals, and the communication signals of each frequency band can realize different signal transmission effects in different signal transmission channels; therefore, the main set signal and the diversity signal respectively have the best signal transmission channels matched with the main set signal and the diversity signal, and the original communication information can be obtained through restoration according to the main set signal and the diversity signal; therefore, the radio frequency communication module 102 in this embodiment may divide frequency bands of communication signals, and transmit large-capacity communication information by using the main set signal and the diversity signal, which is beneficial to ensuring the transmission efficiency and transmission accuracy of communication information, and signals of each frequency band may maintain an optimal transmission state in a corresponding signal transmission channel, and the antenna switching circuit 10 has high antenna communication quality.
the antenna module 103 is connected to the communication device 20 for transmitting the main set signal and the diversity signal; the antenna module 103 includes a first antenna element 1031 and a second antenna element 1032.
The antenna module 103 has a wireless signal transceiving function, and wireless information interaction is realized between the antenna module 103 and the communication device 20; the antenna module 103 is wirelessly connected with the communication device 20, specifically, the first antenna unit 1031 is wirelessly connected with the communication device 20, and the second antenna unit 1032 is wirelessly connected with the communication device 20; on the one hand, the antenna module 103 is capable of wirelessly outputting a communication signal to the communication device 20, and on the other hand, the antenna module 103 wirelessly receives the communication signal output by the communication device 20; in addition, the first antenna unit 1031 and the second antenna unit 1032 have different signal transmission states to match the signal transmission requirements of both the main set signal and the diversity signal, so the present embodiment, in combination with the first antenna unit 1031 and the second antenna unit 1032, can implement transmission diversity of the communication signal, the antenna switching circuit 10 can implement an optimal wireless signal transmission function in each different communication environment, the wireless signal transmission state between the antenna switching circuit 10 and the communication device 20 has higher controllability and flexibility, and the signal transceiving mode of the antenna switching circuit 10 has higher expandability.
the switching module 104 is connected to the first control module 101, the radio frequency communication module 102, and the antenna module 103, and configured to switch a communication state between the radio frequency communication module 102 and the antenna module 103 to a first communication state or a second communication state according to the frequency band switching signal.
specifically, the switching module 104 communicates with the first antenna unit 1031 and the second antenna unit 1032, when the first control module 101 outputs the frequency band switching signal to the switching module 104, the switching module 104 can be driven by the frequency band switching signal to change the signal transmission states of the main set signal and the diversity signal in the first antenna unit 1031 and the second antenna unit 1032, so that the communication state between the radio frequency communication module 102 and the antenna module 103 is switched between the first communication state and the second communication state, the flexibility is strong, the signal transceiving function realized by the antenna module 103 can completely match the frequency band requirements of the main set signal and the diversity signal, and the antenna module 103 has higher communication signal transmission quality and higher signal transceiving performance.
Wherein in the first communication state the first antenna element 1031 is used for transmitting primary set signals and the second antenna element 1032 is used for transmitting diversity signals.
in the second communication state, the first antenna element 1031 is used to transmit diversity signals and the second antenna element 1032 is used to transmit main set signals.
Therefore, in the first communication state and the second communication state, the main set signal and the diversity signal have different signal transmission states, and the main set signal and the diversity signal can be adaptively transmitted in the first antenna unit 1031 and the second antenna unit 1032, so as to maintain the optimal transmission performance of the communication information, and greatly improve the transmission stability and reliability of the main set signal and the diversity signal; the best wireless signal transmission function is kept between the communication device 20 and the antenna module 103, and the wireless communication state of the antenna switching circuit 10 has good controllability; in this embodiment, the switching module 104 changes the communication states of the main set signal and the diversity signal under the control of the frequency band switching signal, so that the main set signal and the diversity signal are switched and output between the first antenna unit 1031 and the second antenna unit 1032, the integrity and the anti-interference performance of the communication information in the transmission process are ensured, the signal transmission stability and the application range of the antenna module 103 are improved, and the communication compatibility of the antenna switching circuit 10 is higher; therefore, when the radio frequency communication module 102 transmits communication information in a sub-band manner by using the main set signal and the diversity signal, the signal transmission states of the main set signal and the diversity signal are not fixed in the first antenna unit 1031 and the second antenna unit 1032 for transmission, but the switching module 104 can switch the communication states of the communication signals, so that the main set signal and the diversity signal realize wireless signal transmission in an optimum signal transmission environment, and the communication quality and information interaction integrity between the antenna module 103 and the communication device 20 are greatly improved.
in the structural schematic of the antenna switching circuit 10 shown in fig. 1, the antenna switching circuit 10 has a relatively simplified circuit module structure, and the radio frequency communication module 102 transmits a large capacity of communication information through the main set signal and the diversity signal, so that the communication performance of the antenna switching circuit 10 is improved; the first control module 101 can directly control the operating state of the switching module 104, so that the main set signal and the diversity signal are selected from any one of the first antenna unit 1031 and the second antenna unit 1032 for signal transmission according to the frequency band switching signal, so as to achieve the best wireless signal transmission quality, the highest communication precision can be achieved through the antenna module 103, the communication state of the antenna switching circuit 10 has higher flexibility and compatibility, and the antenna switching circuit can be universally applied to different industrial technical fields, and has an extremely wide application range; therefore, the present embodiment may perform sub-band switching transmission between first antenna unit 1031 and second antenna unit 1032, so that the original frequency is maintained during transmission of the main set signal and the diversity signal on each antenna unit, the accuracy and integrity of the communication information are maintained, and the problem of distortion or loss of the communication information between antenna module 103 and communication device 20 is avoided; the antenna switching circuit 10 has higher control flexibility and operation simplicity for the signal transmission states of the main set signal and the diversity signal, and has higher practical value; the problem that in the traditional technology, an antenna communication mode can only fix signals in different frequency bands on a specific antenna for transmission, signals in each frequency band can only be transmitted by adopting one fixed signal transmission channel, the flexibility is low, the phenomena of interference and signal distortion easily occur in the transmission process of the signals in each frequency band, the antenna communication quality and the wireless signal transmission precision are reduced, and the antenna communication mode cannot be generally applied is effectively solved.
As an alternative implementation, fig. 2 shows another schematic structural diagram of the antenna switching circuit 10 provided in this embodiment, please refer to fig. 2, in which the radio frequency communication module 102 includes: a first radio frequency communication unit 1021 and a second radio frequency communication unit 1022.
The first rf communication unit 1021 is used for transmitting the master set signal.
the second radio frequency communication unit 1022 is used for transmitting diversity signals.
the present embodiment transmits the main set signal and the diversity signal through the first radio frequency communication unit 1021 and the second radio frequency communication unit 1022, respectively, so that the main set signal and the diversity signal have higher signal transmission accuracy and stability in the antenna switching circuit 10; the radio frequency communication module 102 can ensure the integrity and compatibility of communication information, and the main set signal and the diversity signal can keep independent signal transmission performance in the antenna switching circuit 10, so that the phenomenon of mutual crosstalk of signals of different frequency bands is prevented; the radio frequency communication module 102 in this embodiment has higher communication information transmission efficiency and transmission accuracy, and the compatibility of signal transmission is stronger.
the frequency band switching signal includes a first frequency band switching signal and a second frequency band switching signal, wherein the first frequency band switching signal and the second frequency band switching signal have different frequency band switching information, and further the working state of the switching module 104 can be changed in real time through the first frequency band switching signal and the second frequency band switching signal, so that the signal transmission states of the main set signal and the diversity signal can be switched adaptively, the control precision and the control flexibility of the communication state of the antenna switching circuit 10 are ensured, and the first control module 101 has higher control sensitivity and compatibility for the switching module 104.
the switching module 104 is specifically configured to set a first signal transmission link between the first radio frequency communication unit 1021 and the first antenna unit 1031 according to the first frequency band switching signal.
the first signal transmission link is used for transmitting the master set signal, wherein the master set signal comprises communication information of a corresponding frequency band, and the transmission precision and the transmission efficiency of the master set signal can be maintained through the first signal transmission link, so that the master set signal is prevented from being distorted to a large extent in the transmission process.
The switching module 104 is specifically configured to set a second signal transmission link between the second rf communication unit 1022 and the second antenna unit 1032 according to the first frequency band switching signal.
The second signal transmission link is used for transmitting diversity signals, so that the diversity signals can keep the optimal signal transmission state in the second signal transmission link, and the diversity signals are prevented from generating a larger distortion phenomenon in the transmission process; therefore, the switching module 104 switches the communication state between the radio frequency communication module 102 and the antenna module 103 to the first communication state according to the first frequency band switching signal, and the main set signal and the diversity signal are adaptively transmitted in the first signal transmission link and the second signal transmission link respectively, so that the optimal transmission performance and stability of the communication information are ensured, the working state of the switching module 104 can be changed in time through the first frequency band switching signal, and the radio frequency communication module 102 and the antenna module 103 have higher communication stability and control flexibility.
the switching module 104 is specifically configured to set a third signal transmission link between the second radio frequency communication unit 1022 and the first antenna unit 1031 according to the second frequency band switching signal.
The third signal transmission link is used for transmitting diversity signals, the diversity signals contain corresponding communication information, the diversity signals can keep the optimal signal transmission state in the third signal transmission link, the diversity signals can achieve self-adaptive transmission in the optimal signal transmission state, and controllability is high.
The switching module 104 is specifically configured to set a fourth signal transmission link between the first rf communication unit 1021 and the second antenna unit 1032 according to the second frequency band switching signal.
the fourth signal transmission link is used for transmitting a master set signal, corresponding communication information can be transmitted in a self-adaptive manner through the master set signal, and high signal transmission efficiency and high signal transmission precision are achieved between the radio frequency communication module 102 and the antenna module 103; therefore, the communication state between the radio frequency communication module 102 and the antenna module 103 can be switched to the second communication state through the second frequency band switching signal, and the diversity signal and the main set signal are transmitted in the third signal transmission link and the fourth signal transmission link respectively, so as to ensure the integrity and compatibility of the communication information; the stable signal transmission function is realized between the radio frequency communication module 102 and the antenna module 103 in the second communication state, and the main set signal and the diversity signal have higher signal transmission precision.
In this embodiment, the antenna switching circuit 10 may set different signal transmission links between the radio frequency communication module 102 and the antenna module 103 to meet the transmission requirements of signals in different frequency bands, so as to ensure the transmission accuracy and stability of the signals in different frequency bands, when the first control module 101 outputs the first frequency band switching signal and the second frequency band switching signal, the transmission state of the communication signal is changed by the first frequency band switching signal and the second frequency band switching signal, and the main set signal and the diversity signal may be switched and output between the first antenna unit 1031 and the second antenna unit 32 at will, so as to achieve the optimal effect of receiving and transmitting wireless signals, and ensure the transmission quality and compatibility of communication information; the transmission states of the main set signal and the diversity signal between the antenna units have more flexible adjustability and flexibility, the wireless signal transmission state of the antenna switching circuit 10 has more ease of adjustment, and the optimal wireless signal transmission state between the antenna switching circuit 10 and the communication device 20 can be maintained in various communication environments.
As an optional implementation manner, fig. 3 shows a schematic circuit structure of the switching module 104 provided in this embodiment, please refer to fig. 3, in which the switching module 104 includes a radio frequency switching chip U1: the switching output function of the signal transmission states of the main set signal and the diversity signal is realized by the radio frequency switching chip U1.
a first radio frequency communication pin RF1 of the radio frequency switching chip U1 is connected with the first antenna unit 1031; the first radio frequency communication pin RF1 of the radio frequency switching chip U1 and the first antenna unit 1031 may implement a signal interaction function.
The second radio frequency communication pin RF2 of the radio frequency switching chip U1 is connected with the second antenna unit 1032; the second radio frequency communication pin RF2 of the radio frequency switching chip U1 and the second antenna unit 1032 can realize the signal transmission function.
the third RF communication pin RF3 of the RF switch chip U1 is connected to the first RF communication unit 1021; and a good signal transmission function is kept between the third RF communication pin RF3 of the RF switching chip U1 and the first RF communication unit 1021, and the first RF communication unit 1021 outputs the master set signal to the RF switching chip U1.
The fourth RF communication pin RF4 of the RF switching chip U1 is connected to the second RF communication unit 1022; the second RF communication unit 1022 outputs the diversity signal to the fourth RF communication pin RF4 of the RF switch chip U1, so that the diversity signal has high signal transmission compatibility and reliability.
the first switching control pin CTL1 of the rf switching chip U1 receives a first band switching signal.
a second switching control pin CTL2 of the radio frequency switching chip U1 is connected to a second frequency band switching signal; the first switching control pin CTL1 of the rf switching chip U1 and the second switching control pin CTL2 of the rf switching chip U1 are connected to the first control module 101, and then the first control module 101 can rapidly output the frequency band switching signal to the rf switching chip U1 to drive the video switching chip U1 to implement the switching function of the communication state, and the first control module 101 has high control response accuracy and control response speed.
Illustratively, the model of the radio frequency switching chip U1 is: RF _ SWITCH _ SKY 13396; when the radio frequency switching chip U1 accesses different frequency band switching information, a corresponding signal transmission link can be formed inside the radio frequency switching chip U1 to transmit a main set signal or a diversity signal, so that the communication information can realize a rapid transmission function in an optimal communication state, and the integrity and the anti-interference performance of the communication signal in the transmission process are guaranteed; specifically, the third RF communication pin RF3 and the fourth RF communication pin RF4 of the RF switching chip U1 may transmit a main set signal and a diversity signal, respectively, and the first RF communication pin RF1 and the second RF communication pin RF2 of the RF switching chip U1 and the third RF communication pin RF3 and the fourth RF communication pin RF4 of the RF switching chip U1 implement different signal transmission links; illustratively, when the first control module 101 outputs the first frequency band switching signal to the RF switching chip U1, so that the third RF communication pin RF3 of the RF switching chip U1 is conducted with the first RF communication pin RF1 of the RF switching chip U1, the fourth RF communication pin RF4 of the RF switching chip U1 is conducted with the second RF communication pin RF2 of the RF switching chip U1, and the RF communication module 102 and the antenna module 103 are in a first communication state; when the first control module 101 outputs the second band switching signal to the RF switching chip U1, the third RF communication pin RF3 of the RF switching chip U1 is connected to the second RF communication pin RF2 of the RF switching chip U1, the fourth RF communication pin RF4 of the RF switching chip U1 is connected to the first RF communication pin RF1 of the RF switching chip U1, and the RF communication module 102 and the antenna module 103 are in a second communication state; referring to table 1, table 1 shows a connection relationship between the radio frequency communication pins of the radio frequency switching chip U1 when the radio frequency switching chip U1 accesses the first frequency band switching signal or the second frequency band switching signal, as follows:
Table 1 comparison between connection relationships between respective radio frequency communication pins of the radio frequency switching chip U1 and frequency band switching signals
In the above formula table 1, "1" represents that the signal is in an active state, and "0" is in an inactive state, and the circuit module can be driven to realize a normal circuit function only when the signal is in the active state; therefore, according to table 1, when the first band switching signal or the second band switching signal is changed, the signal transmission link of the main set signal and the diversity signal can be flexibly adjusted, so as to implement the fast switching function of the communication state; therefore, the switching module 104 in this embodiment has a simplified circuit structure, so that the main set signal and the diversity signal can be adaptively transmitted between the first antenna unit 1031 and the second antenna unit 1032, and the switching process of the communication information has a higher adaptive adjustment performance.
as an optional implementation manner, fig. 4 shows a schematic circuit structure of the first control module 101 provided in this embodiment, please refer to fig. 4, where the first control module 101 includes: a first switching signal output terminal BUS1, a second switching signal output terminal BUS2, a first capacitor C1 and a second capacitor C2.
the first switching signal output terminal BUS1 is used for outputting a first frequency band switching signal.
The second switching signal output terminal BUS2 is used for outputting a second band switching signal.
Optionally, the first frequency band switching signal and the second frequency band switching signal are generated by a frequency band switching circuit, and the frequency band switching circuit is implemented by a circuit structure in the conventional technology; the first control module 101 in this embodiment has high communication compatibility.
The first switching signal output terminal BUS1 and the first end of the first capacitor C1 are connected to the switching module 104 in common; the first switching signal output port BUS1 transmits the first band switching signal to the switching module 104.
the second switching signal output terminal BUS and the first end of the second capacitor C2 are connected to the switching module 104 in common; the second switching signal output port BUS outputs a second frequency band switching signal to the switching module 104.
the second end of the first capacitor C1 and the second end of the second capacitor C2 are connected to the ground GND in common; the first capacitor C1 and the second capacitor C2 are decoupling capacitors, and when the first control module 101 transmits the first frequency band switching signal and the second frequency band switching signal, the accuracy of the frequency band switching signal can be maintained through the first capacitor C1 and the second capacitor C2, so that the switching module 104 has higher communication state switching accuracy, and the integrity of wireless communication and the signal transmission efficiency are improved.
therefore, the first control module 101 in this embodiment can transmit the switching signal of each frequency band in real time, so as to implement the flexible regulation and control function of the communication states of the main set signal and the diversity signal, and improve the regulation and control response accuracy of the communication state of the antenna switching circuit 10 and the stable and reliable performance of signal transmission.
As an optional implementation manner, fig. 5 shows a schematic circuit structure of the first antenna element 1031 provided in this embodiment, please refer to fig. 5, where the first antenna element 1031 includes: the wireless communication device comprises a first wireless transceiving port INT1, a wireless communication chip U2 and a first resistor R1.
the ground pin of the wireless communication chip U2 is grounded to GND.
The first signal transmission pin IN1 of the wireless communication chip U2 is connected with the first wireless transceiving port INT2, and the first wireless transceiving port INT1 is connected with the communication device 20; the first wireless transceiving port INT1 is wirelessly connected to the communication device 20, so that the first wireless transceiving port INT1 and the communication device 20 implement a wireless information interaction function, the first wireless transceiving port INT1 can implement a wireless signal transceiving function, and the first antenna unit 1031 and the communication device 20 can maintain a signal compatible transmission function in various communication environments, thereby reducing the wireless transmission cost and complexity of communication signals.
the second signal transmission pin IN2 of the wireless communication chip U2 and the first end of the first resistor R1, the second end of the first resistor R2 is connected to the switching module 104; wherein the first resistor R2 can perfectly match the signal transmission power of both the main and diversity signals, so that the first antenna element 1031 has higher communication information transmission quality and interference resistance.
Illustratively, the model of the wireless communication chip U2 is CON-RF-ECT 818000157; furthermore, the first antenna unit 1031 IN this embodiment may implement a forwarding function of communication signals through the wireless communication chip U2, a main set signal or a diversity signal can maintain a real-time transmission function at the first signal transmission pin IN1 and the second signal transmission pin IN2 of the wireless communication chip U2, and a good wireless communication function is maintained between the first wireless transceiving port INT1 and the communication device 20, which is beneficial to ensuring communication stability and security of the first antenna unit 1031.
As an alternative implementation, fig. 6 shows a schematic circuit structure of the second antenna unit 1032 provided in this embodiment, please refer to fig. 6, where the second antenna unit 1032 includes: the wireless transceiver comprises a second wireless transceiver port INT2, a second resistor R2, a third resistor R3, a third capacitor C3 and a fourth capacitor C4.
the second wireless transceiving port INT2 is connected to the communication device 20, wherein the second wireless transceiving port INT2 is wirelessly connected to the communication device 20, so that a good wireless communication function is maintained between the second antenna unit 1032 and the communication device 20, and a wireless transceiving function of signals can be realized through the second wireless transceiving port INT 2; a first end of the second resistor R2 is connected to the second wireless transceiving port INT2, a first end of the third resistor R3 and a first end of the third capacitor C3 are connected to a second end of the second resistor R2, a second end of the third resistor R3 and a first end of the fourth capacitor C4 are connected to the switching module 104, so that the second antenna unit 1032 and the switching module 104 can implement compatible signal transmission functions, and a second end of the third capacitor C3 and a second end of the fourth capacitor C4 are connected to the ground GND.
When each electronic component in the second antenna unit 1032 realizes the transceiving function of the main or diversity signal, the third capacitor C3 and the fourth capacitor C4 can realize the function of signal voltage stabilization to ensure the communication power of the signal; the second resistor R2 and the third resistor R3 can perform a current limiting function on communication signals, so that the physical safety and the application range of signal transmission of the second antenna unit 1032 are guaranteed; the second antenna unit 1032 can perform high-quality signal communication with the communication device 20, the accuracy and compatibility of wireless communication between the second antenna unit 1032 and the communication device 20 are guaranteed, and the second antenna unit 1032 has a more simplified communication signal transmission procedure.
it should be noted that fig. 5 shows the circuit structure of the first antenna element 1031 by way of example only, and the circuit structure of the second antenna element 1032 shown in fig. 6 is by way of example only, and the circuit structure of the first antenna element 1031 and the circuit structure of the second antenna element 1032 in the present embodiment are not limited to the configuration technology.
As an alternative implementation, fig. 7 shows another structural schematic of the antenna switching circuit 10 provided in this embodiment, and compared with the structural schematic of the antenna switching circuit 10 in fig. 1, the antenna switching circuit 10 in fig. 7 further includes a power control module 105.
The power control module 105 is connected to the switching module 104 and configured to output a power signal to power the switching module 104.
When the power control module 105 outputs the power signal to the switching module 104, the switching module 104 can be powered up by the power signal, so that the switching module 104 switches the communication state, and the main set signal and the diversity signal can maintain the optimal signal transmission state between the radio frequency communication module 102 and the antenna module 103; when the power control module 105 does not output the power signal to the switching module 104, the switching module 104 is in a power-off shutdown state, the antenna switching circuit 10 is stopped, the antenna switching circuit 10 cannot perform wireless signal interaction with the communication device 20, and the switching module 104 cannot perform switching operation of the communication state; therefore, the switching module 104 is enabled to operate or stop through the power signal in the embodiment, so that the signal transmission state of the antenna switching circuit 10 has higher adjustability and flexibility, and higher use experience is brought to technicians.
optionally, the power signal is generated by a dc power supply, and for example, the power signal is a 2.8V dc power signal; the power control module 105 is further connected with a direct current power supply, direct current electric energy is output to the switching module 104 through the power control module 105, the switching module 104 can maintain a safe working state, and higher switching sensitivity and safety are achieved between the main set signal and the diversity signal.
As an alternative implementation, fig. 8 shows a schematic circuit structure of the power control module 105 provided in this embodiment, please refer to fig. 8, where the power control module 105 includes: a fifth capacitor C5 and a power transmission terminal PMU.
And the power transmission end PMU is used for outputting a power signal.
The first ends of the power transmission end PMU and the fifth capacitor C5 are commonly connected to the switching module 104, so that the power control module 105 can output a power signal to the switching module 104 to ensure the power transmission compatibility of the power control module 105, and the second end of the fifth capacitor C5 is grounded GND.
In this embodiment, when the power control module 105 transmits the power signal, the fifth capacitor C5 can perform a filtering function, so that the power signal includes electric energy with higher precision, and the problem of unstable power supply of the switching module 104 due to larger error interference in the transmission process of the power signal is avoided; furthermore, the power control module 105 in this embodiment has a relatively simplified circuit structure, and supplies stable direct current power to the switching module 104 through the power signal, so that the switching module 104 maintains a normal circuit function, and the wireless signal transmission efficiency and accuracy of the antenna switching circuit 10 are improved; the main set signal and the diversity signal can always maintain the optimal signal transmission state, and the switching module 104 has higher control response performance for the signal transmission state of both the main set signal and the diversity signal, and has higher communication compatibility and reliability.
as an alternative embodiment, the frequency bands of the main set signal and the diversity signal do not overlap.
The main set signal and the diversity signal respectively contain different communication information, so that a high-precision wireless communication function can be realized between the antenna switching circuit 10 and the communication equipment 20, and the internal signal transmission efficiency and the signal transmission stability of the antenna switching circuit 10 are improved; therefore, the frequencies of the main set signal and the diversity signal in the embodiment are different, and mutual interference between the main set signal and the diversity signal is avoided; therefore, the main set signal and the diversity signal are respectively transmitted in the antenna switching circuit 10 by adopting separate signal transmission channels, the antenna switching circuit 10 can realize higher wireless signal transmission precision and transmission efficiency through the main set signal and the diversity signal, the communication function between the antenna switching circuit 10 and the communication equipment 20 has higher compatibility and practical value, the communication information can always keep high stability and anti-interference performance in the transmission process, the requirement of the wireless communication precision of the communication equipment 20 can be completely met, and the transmission error of the communication information is reduced.
as an alternative embodiment, the communication device 20 is a mobile phone or a tablet computer.
The antenna switching circuit 10 in this embodiment is applicable to various different industrial technologies, and maintains a good wireless communication function with the external communication device 20, so that the circuit function formed between the antenna switching circuit 10 and the communication device 20 can completely meet the actual circuit function requirement of a technician, and brings a good use experience to a user, the communication device 20 can receive or output communication information, and the communication device 20 can implement a corresponding circuit function, so that the communication state of the antenna switching circuit 20 has good controllability.
fig. 9 shows a schematic structure of a wireless communication system 90 provided in this embodiment, please refer to fig. 9, the wireless communication system 90 includes the antenna switching circuit 10 and the communication device 20 as described above, and the antenna switching circuit 10 performs wireless communication with the communication device 20; the wireless switching circuit 10 and the communication device 20 perform information interaction to complete complex circuit functions, and the internal circuit modules of the wireless communication system 90 have a high communication information transmission function, so that the wireless communication system 90 can be compatibly applied to various communication environments, and the internal signal transmission state of the wireless communication system 90 has good control flexibility and high practical value.
With reference to the above embodiments of fig. 1 to fig. 8, the antenna switching circuit 10 has good communication compatibility and stability, and the antenna switching circuit 10 can perform sub-band transmission on communication information through the main set signal and the diversity signal respectively, thereby greatly ensuring the transmission integrity and transmission efficiency of the communication information; the antenna switching circuit 10 sets separate signal transmission links for the main set signal and the diversity signal respectively, and flexibly switches the signal transmission states of the main set signal and the diversity signal, so that the signal transmission quality and the signal transmission compatibility of the main set signal and the diversity signal are guaranteed, the main set signal and the diversity signal can be wirelessly transmitted in various environments, the wireless signal transmission precision between the antenna switching circuit 10 and the communication equipment 20 is higher, the anti-interference performance is stronger, the wireless communication system 90 combines the antenna switching circuit 10 and the communication equipment 20 to realize more accurate circuit functions, and the application range is wider; therefore, the wireless communication system 90 in this embodiment effectively overcomes the problems of the conventional technology, such as poor flexibility of the wireless communication process and low internal communication quality.
To sum up, the embodiment of the utility model provides an antenna switching circuit 10 realizes the switching output function of sub-band signal, and the signal of each kind of frequency channel can keep the transmission function of high accuracy under the most adapted communication state, improves the radio communication quality of signal, and the radio communication process of sub-band signal has comparatively nimble performance of controlling, and this will have positive promotion effect to the quality of antenna frequency division communication in this field, will produce important actual production 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. An antenna switching circuit for connection with a communication device, the antenna switching circuit comprising:
The first control module is used for outputting a frequency band switching signal;
A radio frequency communication module for transmitting the main set signal and the diversity signal;
an antenna module coupled to the communication device for transmitting the main and diversity signals; and
A switching module connected to the first control module, the radio frequency communication module, and the antenna module, and configured to switch a communication state between the radio frequency communication module and the antenna module to a first communication state or a second communication state according to the frequency band switching signal;
The antenna module comprises a first antenna unit and a second antenna unit;
in the first communication state, the first antenna unit is configured to transmit the main set signal, and the second antenna unit is configured to transmit the diversity signal;
In the second communication state, the first antenna unit is configured to transmit the diversity signal, and the second antenna unit is configured to transmit the main set signal.
2. the antenna switching circuit according to claim 1, wherein the radio frequency communication module comprises:
a first radio frequency communication unit for transmitting the main set signal; and
a second radio frequency communication unit for transmitting the diversity signal;
the switching module is specifically configured to:
Setting a first signal transmission link between the first radio frequency communication unit and the first antenna unit according to a first frequency band switching signal;
Setting a second signal transmission link between the second radio frequency communication unit and the second antenna unit according to the first frequency band switching signal;
setting a third signal transmission link between the second radio frequency communication unit and the first antenna unit according to a second frequency band switching signal;
And setting a fourth signal transmission link between the first radio frequency communication unit and the second antenna unit according to the second frequency band switching signal.
3. The antenna switching circuit of claim 2 wherein the switching module comprises a radio frequency switching chip:
a first radio frequency communication pin of the radio frequency switching chip is connected with the first antenna unit;
A second radio frequency communication pin of the radio frequency switching chip is connected with the second antenna unit;
A third radio frequency communication pin of the radio frequency switching chip is connected with the first radio frequency communication unit;
A fourth radio frequency communication pin of the radio frequency switching chip is connected with the second radio frequency communication unit;
a first switching control pin of the radio frequency switching chip is accessed into the first frequency band switching signal;
and a second switching control pin of the radio frequency switching chip is accessed into the second frequency band switching signal.
4. The antenna switching circuit of claim 2, wherein the first control module comprises:
the first switching signal output end, the second switching signal output end, the first capacitor and the second capacitor;
The first switching signal output end is used for outputting the first frequency band switching signal;
the second switching signal output end is used for outputting the second frequency band switching signal;
The first switching signal output end and the first end of the first capacitor are connected to the switching module in common;
The second switching signal output end and the first end of the second capacitor are connected to the switching module in common;
the second end of the first capacitor and the second end of the second capacitor are connected to the ground in common.
5. The antenna switching circuit according to claim 1, wherein the first antenna element comprises:
The wireless communication device comprises a first wireless transceiving port, a wireless communication chip and a first resistor;
the grounding pin of the wireless communication chip is grounded;
A first signal transmission pin of the wireless communication chip is connected with the first wireless transceiving port, and the first wireless transceiving port is connected with the communication equipment;
and a second signal transmission pin of the wireless communication chip is connected with the first end of the first resistor, and the second end of the first resistor is connected with the switching module.
6. the antenna switching circuit according to claim 1, wherein the second antenna unit comprises:
The second wireless transceiving port, the second resistor, the third capacitor and the fourth capacitor;
the second wireless transceiving port is connected with the communication device, the first end of the second resistor is connected with the second wireless transceiving port, the first end of the third resistor and the first end of the third capacitor are connected to the second end of the second resistor in a shared mode, the second end of the third resistor and the first end of the fourth capacitor are connected to the switching module in a shared mode, and the second end of the third capacitor and the second end of the fourth capacitor are connected to the ground in a shared mode.
7. The antenna switching circuit according to claim 1, further comprising:
and the power supply control module is connected with the switching module and used for outputting a power supply signal so as to supply power to the switching module.
8. the antenna switching circuit according to claim 7, wherein the power supply control module comprises:
A fifth capacitor and a power transmission terminal;
the power transmission terminal is used for outputting the power signal;
The power transmission end and the first end of the fifth capacitor are connected to the switching module in a shared mode, and the second end of the fifth capacitor is grounded.
9. The antenna switching circuit of claim 1 wherein the frequency bands of said main and diversity signals do not overlap.
10. a wireless communication system, comprising:
The antenna switching circuit of any of claims 1-9; and
a communication device; the antenna switching circuit wirelessly communicates with the communication device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920901376.8U CN209805818U (en) | 2019-06-13 | 2019-06-13 | Antenna switching circuit and wireless communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920901376.8U CN209805818U (en) | 2019-06-13 | 2019-06-13 | Antenna switching circuit and wireless communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209805818U true CN209805818U (en) | 2019-12-17 |
Family
ID=68833682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920901376.8U Active CN209805818U (en) | 2019-06-13 | 2019-06-13 | Antenna switching circuit and wireless communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209805818U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737605A (en) * | 2020-12-29 | 2021-04-30 | Oppo广东移动通信有限公司 | Antenna switching circuit and method and electronic equipment |
| WO2021136087A1 (en) * | 2019-12-31 | 2021-07-08 | Oppo广东移动通信有限公司 | Radio frequency module, control method, electronic device and storage medium |
| US11664831B2 (en) | 2019-12-31 | 2023-05-30 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Radio frequency assembly and electronic device |
-
2019
- 2019-06-13 CN CN201920901376.8U patent/CN209805818U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021136087A1 (en) * | 2019-12-31 | 2021-07-08 | Oppo广东移动通信有限公司 | Radio frequency module, control method, electronic device and storage medium |
| CN114586288A (en) * | 2019-12-31 | 2022-06-03 | Oppo广东移动通信有限公司 | Radio frequency module, control method, electronic device and storage medium |
| US11664831B2 (en) | 2019-12-31 | 2023-05-30 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Radio frequency assembly and electronic device |
| CN114586288B (en) * | 2019-12-31 | 2024-04-30 | Oppo广东移动通信有限公司 | Radio frequency module, control method, electronic device and storage medium |
| CN112737605A (en) * | 2020-12-29 | 2021-04-30 | Oppo广东移动通信有限公司 | Antenna switching circuit and method and electronic equipment |
| CN112737605B (en) * | 2020-12-29 | 2022-08-16 | Oppo广东移动通信有限公司 | Antenna switching circuit, method and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209805818U (en) | Antenna switching circuit and wireless communication system | |
| CN104247149B (en) | For switching the equipment of antenna | |
| CN102611393B (en) | Radio frequency power amplifier system having waveband switching function | |
| KR20210138733A (en) | Radio Frequency Front End Circuits and Mobile Terminals | |
| CA3134404C (en) | Radio frequency front-end circuit and mobile terminal | |
| CN203590225U (en) | Ultra long distance bluetooth communication module | |
| CN104901025B (en) | A kind of implementation method and device, Anneta module of Anneta module | |
| CN209805817U (en) | Tuning circuit and mobile terminal | |
| CN104362425A (en) | Mobile terminal realizing NFC antenna sharing | |
| CN203660044U (en) | Intelligent terminal capable of multiplexing high and low frequency antennas | |
| CN209787173U (en) | Radio frequency circuit and terminal | |
| US20210075121A1 (en) | Electronic device | |
| CN104577332A (en) | Full-closed loop automatic tuning control device and method for improving stray isolation degree between antennas | |
| US20230027340A1 (en) | Wireless communications system, power supply system, and terminal device | |
| CN202750123U (en) | Layout structure of common antenna, and mobile terminal | |
| US20140111401A1 (en) | Mobile terminal and pendant connected therewith | |
| CN208444011U (en) | The miniature navigational communications module of compatible Integrated Service Digital Network antenna | |
| CN104577357B (en) | A kind of antenna and mobile terminal | |
| CN207603634U (en) | A kind of data-link synthetical baseband plate number passes device | |
| CN204634050U (en) | Light signal access type LTE quorum sensing inhibitor system | |
| CN203883130U (en) | Shipborne double-waveband common antenna device | |
| CN208904993U (en) | A kind of double-channel wireless broadband transmission equipment | |
| CN210137316U (en) | Vehicle-mounted microwave frequency conversion circuit and vehicle-mounted equipment | |
| CN210469375U (en) | Transmitting circuit, chip and electronic equipment supporting ASK modulation | |
| CN203086471U (en) | Network NFC (Near Field Communication) equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |