CN108259046B - Antenna system and mobile terminal - Google Patents
Antenna system and mobile terminal Download PDFInfo
- Publication number
- CN108259046B CN108259046B CN201810015058.1A CN201810015058A CN108259046B CN 108259046 B CN108259046 B CN 108259046B CN 201810015058 A CN201810015058 A CN 201810015058A CN 108259046 B CN108259046 B CN 108259046B
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- antenna
- switch
- radio frequency
- frequency circuit
- frequency band
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/006—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
Abstract
The invention provides an antenna system and a mobile terminal. The antenna system includes: a common antenna for receiving signals of a first predetermined frequency band and for transmitting and receiving signals of a second predetermined frequency band; the first radio frequency circuit is used for processing the signal of the first preset frequency band; the second radio frequency circuit is used for processing the signal of the second preset frequency band; a switching control switch comprising: a diverter switch and a switch controller; the common antenna is connected to the first radio frequency circuit or the second radio frequency circuit through the change-over switch; the switch controller is used for controlling the switch to switch between the first radio frequency circuit and the second radio frequency circuit so as to conduct the shared antenna and the first radio frequency circuit or conduct the shared antenna and the second radio frequency circuit. The invention can reduce the interference among the radio frequency signals of different frequency bands, improve the insertion loss performance of the antenna system and realize the simultaneous work of the radio frequency signals of different frequency bands.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to an antenna system and a mobile terminal.
Background
With the continuous development of the mobile internet, more and more Radio Frequency (RF) technologies are integrated on the mobile terminal (especially, the mobile phone), so that the design of the mobile terminal becomes more and more complex.
Currently, the radio frequency part of a handset comprises at least 2 antennas. The main antenna and the diversity antenna are distributed at the lower end and the upper end of the mobile phone screen respectively. Moreover, most WiFi antennas are also distributed at the upper end of the mobile phone screen, and there is a possibility that the WiFi antennas and the diversity antennas share the same antenna. In addition, the radio frequency part of some mobile phones also supports 4 × 4MIMO (Multiple Input Multiple Output) functions, the MIMO antennas are distributed at four corners of the upper and lower ends of the mobile phone screen, and the mobile phones also support WiFi (Wireless Fidelity) functions. Due to the limited space, there must be a case where the WiFi antenna is co-antenna with the diversity antenna.
When a radio frequency antenna (such as an LTE antenna) and a WiFi antenna share an antenna, the isolation of the antennas is poor, and the problem of mutual interference between frequency bands is likely to occur. The existing scheme of the problem has complex process and high cost.
Disclosure of Invention
The embodiment of the invention provides an antenna system and a mobile terminal, which aim to solve the problem that mutual interference among frequency bands is easy to occur when antennas of the conventional mobile terminal share the antennas.
In order to solve the technical problem, the invention is realized as follows: an antenna system, comprising:
a common antenna for receiving signals of a first predetermined frequency band and for transmitting and receiving signals of a second predetermined frequency band;
the first radio frequency circuit is used for processing the signal of the first preset frequency band;
the second radio frequency circuit is used for processing the signal of the second preset frequency band;
a switching control switch comprising: a diverter switch and a switch controller;
wherein the common antenna is connected to the first radio frequency circuit or the second radio frequency circuit through the switch;
the switch controller is configured to control the switch to switch between the first radio frequency circuit and the second radio frequency circuit to conduct the common antenna and the first radio frequency circuit, or to conduct the common antenna and the second radio frequency circuit.
An embodiment of the present invention further provides a mobile terminal, including:
the antenna system according to the above embodiment;
a processor connected to the switch controller;
the processor outputs a control signal to the switch controller according to a preset time slot ratio, so that the switch controller controls the switch to switch between the first radio frequency circuit and the second radio frequency circuit according to the control signal; the preset time slot ratio represents the time slot allocation of the shared antenna between the signal of the first preset frequency band and the signal of the second preset frequency band.
In the embodiment of the invention, the shared antenna is connected to the first radio frequency circuit or the second radio frequency circuit through the switch, and the switch is controlled by the switch controller to switch between the first radio frequency circuit and the second radio frequency circuit so as to conduct the shared antenna and the first radio frequency circuit or conduct the shared antenna and the second radio frequency circuit. Therefore, the interference among the radio frequency signals of different frequency bands can be reduced, the insertion loss performance of the antenna system is improved, and the simultaneous working of the radio frequency signals of different frequency bands can be realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention 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 that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of an antenna system according to an embodiment of the present invention;
fig. 2 is a diagram illustrating a position distribution of an antenna system on a mobile terminal according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a frame structure corresponding to an uplink and downlink configuration state in the TDD-LTE system.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of an antenna system according to an embodiment of the present invention. Wherein, this antenna system includes: a common antenna 1 for receiving signals of a first preset frequency band and transmitting and receiving signals of a second preset frequency band; a first radio frequency circuit 2 for processing the signal of the first preset frequency band; a second rf circuit 3 for processing the signal of the second predetermined frequency band; the switching control switch 4 includes: a switch 41 and a switch controller 42.
Wherein, the common antenna 1 is connected to the first rf circuit or the second rf circuit 3 through the switch 41; the switch controller 42 is configured to control the switch 41 to switch between the first rf circuit 2 and the second rf circuit 3 to turn on the common antenna 1 and the first rf circuit 2, or turn on the common antenna 1 and the second rf circuit 3.
Preferably, the signal of the first preset frequency band is a reception diversity signal of the LTE system.
Preferably, the first preset frequency band is 2300MHz-2400MHz, or 2570 MHz-2620 MHz.
When the common antenna 1 receives a reception diversity signal of the LTE system, it is used as an LTE diversity antenna.
Preferably, the signal of the second preset frequency band is a WIFI signal.
Preferably, the second preset frequency band includes: 2.4GHz and/or 5 GHz.
Note that, when the shared antenna 1 transmits or receives a WIFI signal, it functions as a WIFI antenna.
Preferably, the switch controller 42 is specifically configured to: and the processor 5 of the receiving mobile terminal outputs a control signal according to a preset time slot ratio, and controls the switch 41 to switch between the first radio frequency circuit 2 and the second radio frequency circuit 3 according to the control signal.
The preset time slot ratio indicates the time slot allocation of the shared antenna 1 between the signal of the first preset frequency band and the signal of the second preset frequency band.
Preferably, the switch 41 is a single pole double throw switch.
Based on the embodiment shown in fig. 1, as a preferred implementation manner, the antenna system of the embodiment of the present invention may further include: a main set of antennas 6 for transmitting and receiving signals of a first predetermined frequency band.
Here, the common antenna 1 corresponds to the primary set antenna 6 when it is an LTE diversity antenna.
Based on the embodiment shown in fig. 1 and the above-mentioned embodiment including the main set antenna, it is preferable that the antenna system of the present invention further includes: a first diversity antenna and a second diversity antenna for transmitting and receiving signals of a first predetermined frequency band.
An embodiment of the present invention further provides a mobile terminal, including: the antenna system according to the above embodiment; a processor 5 connected to the switch controller 42, wherein the processor 5 outputs a control signal to the switch controller 42 according to a preset time slot ratio, so that the switch controller 42 controls the switch 41 to switch between the first radio frequency circuit 2 and the second radio frequency circuit 3 according to the control signal; the preset time slot ratio indicates the time slot allocation of the shared antenna 1 between the signal of the first preset frequency band and the signal of the second preset frequency band.
Fig. 2 shows a position distribution diagram of the antenna system on the mobile terminal.
It should be noted that the common antenna 1 is located at the upper left end of the screen of the mobile terminal; the main set antenna 6 is located at the lower right end of the mobile terminal screen.
Here, taking TDD-LTE B40 as an example, the first preset frequency band is 2300MHz-2400 MHz. As shown in FIG. 3, the frame structure of LTE includes 10 subframes, and the number of the subframes is from 0 to 9. Taking the above downlink configuration 1 state as an example, numbers 0, 4, 5, and 9 are downlink subframes, and are in a receiving state; numbers 2, 3, 7 and 8 are uplink subframes and are in a sending state; numbers 1 and 6 are special subframes.
It should be noted that, in fig. 3, "D" corresponds to a downlink subframe, "U" corresponds to an uplink subframe, and "S" corresponds to a special subframe.
Here, since the shared antenna has only a signal receiving function when it is used as an LTE diversity antenna, it operates only at 0, 4, 5, and 9 subframes, and allocates the time slots corresponding to 0, 4, 5, and 9 subframes to the LTE diversity antenna for use, that is, when the time slots are corresponding to these time slots, the processor 5 of the mobile terminal outputs a high level signal (or a low level signal) to the switch controller 42, and the switch controller 42 controls the switch 41 to switch to the first radio frequency circuit 2 according to the control signal;
when the shared antenna is used as a WIFI antenna, the time slots corresponding to the remaining other subframes are allocated to the WIFI antenna for use, that is, when the time slots correspond to the time slots, the processor 5 of the mobile terminal outputs a low level signal (or a high level signal) to the switch controller 42, and the switch controller 42 controls the switch 41 to switch to the second radio frequency circuit 3 according to the control signal. Therefore, the interference among the radio frequency signals of different frequency bands is reduced, the insertion loss performance of the antenna system is improved, and the simultaneous working of the radio frequency signals of different frequency bands can be realized through the logic control of the processor of the mobile terminal according to the preset time slot ratio.
It may also include for the antenna system: a first diversity antenna and a second diversity antenna for transmitting and receiving signals of a first preset frequency band, where the first diversity antenna and the second diversity antenna are located at an upper right end portion and a lower left end portion of a screen of the mobile terminal, respectively, if the first diversity antenna and the second diversity antenna are placed on the mobile terminal shown in fig. 2.
That is to say, the shared antenna, the first diversity antenna, the second diversity antenna and the main diversity antenna are distributed at four corners of the upper end and the lower end of the mobile phone screen. The shared antenna can be used as a diversity antenna and a WIFI antenna.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (3)
1. An antenna system, comprising:
a common antenna (1) for receiving signals of a first predetermined frequency band and for transmitting and receiving signals of a second predetermined frequency band;
a first radio frequency circuit (2) for processing signals of said first preset frequency band;
a second radio frequency circuit (3) for processing signals of said second preset frequency band;
switching control switch (4) comprising: a changeover switch (41) and a switch controller (42);
wherein the common antenna (1) is connected to the first radio frequency circuit (2) or the second radio frequency circuit (3) through the switch (41), and the switch (41) is a single-pole double-throw switch;
the switch controller (42) is used for controlling the switch (41) to switch between the first radio frequency circuit (2) and the second radio frequency circuit (3) so as to conduct the shared antenna (1) and the first radio frequency circuit (2) or conduct the shared antenna (1) and the second radio frequency circuit (3);
the switch controller (42) is specifically configured to: receiving a control signal output by a processor of the mobile terminal according to a preset time slot ratio, and controlling the switch (41) to switch between the first radio frequency circuit (2) and the second radio frequency circuit (3) according to the control signal; the preset time slot ratio represents the time slot allocation of the shared antenna (1) between the signal of the first preset frequency band and the signal of the second preset frequency band;
the antenna system further comprises:
a main set antenna (6) for transmitting and receiving signals of the first preset frequency band;
the common antenna (1) is positioned at the upper left end part of the screen of the mobile terminal; the main antenna (6) is positioned at the lower right end of the screen of the mobile terminal;
the frame structure of LTE comprises 10 subframes, the number of the subframes is from 0 to 9, wherein the numbers 0, 4, 5 and 9 are downlink subframes and are in a receiving state; numbers 2, 3, 7 and 8 are uplink subframes and are in a sending state; numbers 1 and 6 are special subframes;
when the shared antenna (1) is used as an LTE diversity antenna, receiving a high-level signal output by the processor to the switch controller (42) at time slots corresponding to sub-frames of 0, 4, 5 and 9, wherein the switch controller (42) controls the switch (41) to be switched to the first radio frequency circuit (2) according to the high-level signal;
when the shared antenna (1) is used as a WIFI antenna, receiving a low-level signal output by the processor to the switch controller (42) at a time slot corresponding to the rest of other subframes, and controlling the switch (41) to be switched to the second radio frequency circuit (3) by the switch controller (42) according to the low-level signal;
alternatively, the first and second electrodes may be,
when the shared antenna (1) is used as an LTE diversity antenna, in time slots corresponding to sub-frames of 0, 4, 5 and 9, the receiving processor outputs a low-level signal to the switch controller (42), and the switch controller (42) controls the switch (41) to be switched to the first radio frequency circuit (2) according to the low-level signal;
when the shared antenna (1) is used as a WIFI antenna, receiving a high-level signal output by the processor to the switch controller (42) at a time slot corresponding to the rest of other subframes, and controlling the switch (41) to be switched to the second radio frequency circuit (3) by the switch controller (42) according to the high-level signal.
2. The antenna system of claim 1, further comprising:
and the first diversity antenna and the second diversity antenna are used for receiving the signals of the first preset frequency band.
3. A mobile terminal, comprising:
an antenna system as claimed in any one of claims 1 to 2;
a processor (5) connected to the switch controller (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810015058.1A CN108259046B (en) | 2018-01-08 | 2018-01-08 | Antenna system and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810015058.1A CN108259046B (en) | 2018-01-08 | 2018-01-08 | Antenna system and mobile terminal |
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| Publication Number | Publication Date |
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| CN108259046A CN108259046A (en) | 2018-07-06 |
| CN108259046B true CN108259046B (en) | 2020-02-21 |
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| CN201810015058.1A Active CN108259046B (en) | 2018-01-08 | 2018-01-08 | Antenna system and mobile terminal |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109004376B (en) * | 2018-07-17 | 2024-04-23 | 合肥联宝信息技术有限公司 | Circuit board structure and electronic equipment |
| CN109788125B (en) * | 2018-12-24 | 2020-09-22 | 维沃移动通信有限公司 | Interference processing method and device and mobile terminal |
| CN113300725B (en) * | 2019-06-25 | 2023-01-10 | Oppo广东移动通信有限公司 | Antenna switching method and related equipment |
| CN112448740B (en) * | 2019-08-28 | 2023-02-28 | 北京小米移动软件有限公司 | Mobile terminal |
| CN110971246A (en) * | 2019-11-30 | 2020-04-07 | 惠州Tcl移动通信有限公司 | Radio frequency circuit, control method thereof and mobile terminal |
| CN111641423A (en) * | 2020-06-09 | 2020-09-08 | 展讯通信（上海）有限公司 | Radio frequency interference processing method, electronic device and storage medium |
| CN112910493B (en) * | 2021-02-01 | 2023-03-24 | 维沃移动通信有限公司 | Antenna system and electronic device |
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| CN103648136A (en) * | 2013-12-23 | 2014-03-19 | 展讯通信（上海）有限公司 | Multi-mode wireless terminal and method for quickly returning back after completion of circuit switched fall back thereof |
| CN104469958A (en) * | 2014-12-31 | 2015-03-25 | 华为技术有限公司 | Dual-frequency communication method and WLAN device |
| JP2016100676A (en) * | 2014-11-19 | 2016-05-30 | 住友電気工業株式会社 | Radio communication device and antenna sharing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006129023A (en) * | 2004-10-28 | 2006-05-18 | Alps Electric Co Ltd | High-frequency switching circuit |
| CN202259659U (en) * | 2011-09-22 | 2012-05-30 | 东莞宇龙通信科技有限公司 | Antenna device and handheld equipment with antenna device |
| CN105207709B (en) * | 2015-08-27 | 2018-11-02 | 宇龙计算机通信科技(深圳)有限公司 | Control circuit, control method and the control device and terminal of diversity reception shared antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103648136A (en) * | 2013-12-23 | 2014-03-19 | 展讯通信（上海）有限公司 | Multi-mode wireless terminal and method for quickly returning back after completion of circuit switched fall back thereof |
| JP2016100676A (en) * | 2014-11-19 | 2016-05-30 | 住友電気工業株式会社 | Radio communication device and antenna sharing method |
| CN104469958A (en) * | 2014-12-31 | 2015-03-25 | 华为技术有限公司 | Dual-frequency communication method and WLAN device |
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| CN108259046A (en) | 2018-07-06 |
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