CN108206331B - Antenna device and mobile terminal thereof - Google Patents
Antenna device and mobile terminal thereof Download PDFInfo
- Publication number
- CN108206331B CN108206331B CN201611186204.4A CN201611186204A CN108206331B CN 108206331 B CN108206331 B CN 108206331B CN 201611186204 A CN201611186204 A CN 201611186204A CN 108206331 B CN108206331 B CN 108206331B
- Authority
- CN
- China
- Prior art keywords
- antenna
- frequency
- control unit
- low
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
Abstract
An antenna device comprises a first antenna, a first duplexer, a control unit, a first matching adjustment unit and a first coupling adjustment unit. The first antenna is used for receiving and transmitting signals. And the first duplexer is electrically connected with the first antenna and is used for separating the signal received by the first antenna into a low-frequency signal and a high-frequency signal. The control unit is used for judging the strength of the signal received by the first antenna. The control unit controls the first coupling adjusting unit to adjust the resonance frequency point of the first antenna according to the signal intensity of the low-frequency signal separated by the first duplexer so as to expand the low-frequency bandwidth of the first antenna and change the low-frequency working frequency band. The control unit controls the first matching and adjusting unit to adjust the resonance frequency point of the first antenna according to the signal intensity of the high-frequency signal separated by the first duplexer so as to expand the high-frequency bandwidth and change the high-frequency working frequency, and further expand the low-frequency bandwidth and change the low-frequency working frequency band of the first antenna.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an antenna device and a mobile terminal thereof.
Background
With the development of 4G communication, the frequency range of the radio frequency coverage of the personal terminal product becomes wider and wider, so that the frequency range of the terminal antenna is expanded from 824-960MHZ and 1710-2170MHZ to 698-960MHZ and 1710-2690 MHZ. The smaller the terminal product is required to be made, the thinner the terminal product is made, which results in limited bandwidth and coverage of the terminal product, and poor signal transmission and reception of the terminal product. The bandwidth range is wider and wider, and is limited by the size and mechanism of the antenna, which brings great challenges to the antenna design.
Disclosure of Invention
Accordingly, there is a need for an antenna apparatus to solve the problem of bandwidth limitation, and a mobile terminal.
An antenna device according to an embodiment of the present invention is an antenna device including:
a first antenna for receiving and transmitting signals;
the first duplexer is electrically connected to the first antenna and is used for separating the signal received by the first antenna into a low-frequency signal and a high-frequency signal;
the control unit is electrically connected with the first antenna and used for judging the signal intensity of the low-frequency signal and the high-frequency signal after the first duplexer is separated;
the first coupling adjusting unit is electrically connected to the control unit, and the control unit controls the first coupling adjusting unit to adjust the resonance frequency point of the first antenna according to the signal intensity of the low-frequency signal separated by the first duplexer so as to expand the low-frequency bandwidth of the first antenna and change the low-frequency working frequency band;
the first matching and adjusting unit is electrically connected to the control unit, and the control unit controls the first matching unit to adjust the resonance frequency point of the first antenna according to the signal intensity of the high-frequency signal separated by the first duplexer so as to expand the high-frequency bandwidth and change the high-frequency working frequency band, and further expand the low-frequency bandwidth and change the low-frequency working frequency band of the first antenna.
Preferably, the first coupling adjustment unit includes:
the first change-over switch is electrically connected with the control unit;
one end of the at least one inductor is electrically connected to the first change-over switch, and the other end of the at least one inductor is grounded; wherein
The control unit controls the first switch to select one of the at least one inductor according to the signal intensity of the low-frequency signal so as to adjust the resonance frequency point of the first antenna, expand the low-frequency bandwidth of the first antenna and change the low-frequency working frequency band.
Preferably, the first matching adjustment unit includes:
the second change-over switch is electrically connected with the control unit;
one end of the at least one inductor is electrically connected to the second change-over switch, and the other end of the at least one inductor is electrically connected to the first duplexer; wherein
The control unit controls the second switch to select one of the at least one inductor according to the signal intensity of the high-frequency signal so as to adjust the resonance frequency point of the first antenna, expand the high-frequency bandwidth and change the high-frequency working frequency band, and further expand the low-frequency bandwidth of the first antenna and change the low-frequency working frequency band.
Preferably, the antenna device further includes:
a second antenna for receiving and transmitting signals;
the second duplexer is electrically connected to the second antenna and is used for separating the signal received by the second antenna into a low-frequency signal and a high-frequency signal;
the second coupling adjusting unit is electrically connected to the control unit, and the control unit controls the second coupling adjusting unit to adjust the resonance frequency point of the second antenna according to the signal intensity of the low-frequency signal separated by the second duplexer so as to expand the low-frequency bandwidth of the second antenna and change the low-frequency working frequency band;
and the second matching and adjusting unit is electrically connected with the control unit, and the control unit controls the second matching unit to adjust the resonance frequency point of the second antenna according to the signal intensity of the high-frequency signal separated by the second duplexer so as to expand the high-frequency bandwidth and change the high-frequency working frequency band, and further expand the low-frequency bandwidth and change the low-frequency working frequency band of the second antenna.
Preferably, the second coupling unit includes:
the third change-over switch is electrically connected with the control unit;
one end of the at least one inductor is electrically connected to the third change-over switch, and the other end of the at least one inductor is grounded; wherein
The control unit controls the third switch to select one of the at least one inductor according to the signal strength of the low-frequency signal separated by the second duplexer, so as to adjust the resonance frequency point of the second antenna, expand the low-frequency bandwidth of the second antenna and change the low-frequency working frequency band.
Preferably, the second matching unit includes:
a fourth change-over switch electrically connected to the control unit;
one end of the at least one inductor is electrically connected to the fourth selector switch, and the other end of the at least one inductor is electrically connected to the second duplexer; wherein
The control unit controls the fourth switch to select one of the at least one inductor according to the signal intensity of the high-frequency signal separated by the second duplexer, adjusts the resonance frequency point adjusted by the second antenna so as to expand the high-frequency bandwidth and change the high-frequency working frequency band, and further expands the low-frequency bandwidth of the second antenna and changes the low-frequency working frequency band.
Preferably, the antenna device further includes:
the first sensing unit is electrically connected with the control unit and used for sensing the distance between a human body and the first antenna and the distance between the human body and the second antenna;
the fifth switching unit is electrically connected between the control unit and the first antenna and between the control unit and the second antenna and is used for selecting the first antenna or the second antenna to transmit or receive signals; wherein
The control unit is further configured to output a first control signal when the first sensing unit senses that the distance from the face to the first antenna is smaller than the distance from the face to the second antenna, and control the fifth switching unit to select the second antenna to transmit or receive a signal;
the control unit is further configured to output a second control signal and control the fifth switching unit to select the first antenna to transmit or receive a signal when the first sensing unit senses that the distance from the face to the second antenna is smaller than the distance from the face to the first antenna.
Preferably, the antenna device further includes:
the second sensing unit is electrically connected with the control unit and the first antenna and used for sensing the distance between a human body and the first antenna;
the third sensing unit is electrically connected with the control unit and the second antenna and used for sensing the distance between a human body and the second antenna;
the fifth switching unit is electrically connected between the control unit and the first antenna and between the control unit and the second antenna and is used for selecting the first antenna or the second antenna to transmit or receive signals; wherein
The control unit is further used for outputting a first control signal and controlling the fifth switching unit to select the second antenna to transmit or receive signals when the second sensing unit senses that a human body touches or approaches the first antenna;
the control unit is further used for outputting a second control signal when the third sensing unit senses that a human body touches or approaches the second antenna, and controlling the fifth switching unit to select the first antenna to transmit or receive signals.
The invention also provides a mobile terminal comprising the antenna device.
Compared with the prior art, the antenna device and the mobile terminal thereof provided by the embodiment of the invention control the first matching adjusting unit to adjust the resonance frequency point of the first antenna, expand the low-frequency bandwidth of the first antenna and change the low-frequency working frequency band of the first antenna through the control unit according to the signal intensity received by the first antenna. The control unit controls the first coupling unit to adjust the resonance frequency point of the first antenna according to the signal intensity received by the first antenna, so as to further expand the low-frequency bandwidth of the first antenna and change the low-frequency working frequency band, and simultaneously expand the high-frequency bandwidth of the first antenna and change the high-frequency working frequency band. The first matching and adjusting unit is combined with the first coupling and adjusting unit to strengthen the low-frequency bandwidth expansion and the high-frequency bandwidth expansion, so that the problem that the bandwidth and the coverage range of a terminal product are limited is solved, and the quality of the transmitting and receiving signals of the terminal product is improved.
Drawings
Fig. 1 is a schematic structural diagram of an antenna device and a mobile terminal according to an embodiment of the invention.
Fig. 2 is a circuit diagram of an antenna device and a mobile terminal according to an embodiment of the invention.
Fig. 3 is a circuit diagram of another embodiment of the antenna device and the mobile terminal thereof according to the invention.
Fig. 4 is a circuit diagram of another embodiment of an antenna device and a mobile terminal thereof according to the present invention.
Fig. 5 is a schematic diagram illustrating an adjusting effect of an embodiment of a first coupling adjusting unit in an antenna device and a mobile terminal thereof according to the present invention.
Fig. 6 is a schematic diagram illustrating an adjusting effect of an embodiment of a first matching adjusting unit in an antenna device and a mobile terminal thereof according to the present invention.
Description of the main elements
First coupling adjustment unit 1004
First matching adjustment unit 1005
Second coupling adjustment unit 1008
Second matching adjustment unit 1009
Inductance L1-L16
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
Fig. 1 is a schematic structural diagram of an embodiment of an antenna device 100 and a mobile terminal 200 according to the invention. In the present embodiment, the mobile terminal 200 includes the antenna device 100. The antenna device 100 includes a first antenna 1001, a first duplexer 1002, a control unit 1003, a first coupling adjustment unit 1004, and a first matching adjustment unit 1005. The first antenna 1001 is used for receiving and transmitting signals. The first duplexer 1002 is electrically connected to the first antenna 1001. The first duplexer 1002 includes a low-pass filter and a high-pass filter, and is configured to separate a signal received by the first antenna 1001 into a low-frequency signal and a high-frequency signal. The control unit 1003 is electrically connected to the first duplexer 1002, and is configured to determine signal strengths of the low-frequency signal and the high-frequency signal separated by the first duplexer 1002. The first coupling adjustment unit 1004 is electrically connected to the first duplexer 1002 and the control unit 1003. The control unit 1003 controls the first coupling adjustment unit 1004 to adjust the resonant frequency of the first antenna 1001 according to the signal strength of the low-frequency signal, so as to expand the low-frequency bandwidth of the first antenna 1001 and change the low-frequency working frequency band of the first antenna 1001. In the present embodiment, control section 1003 adjusts first coupling adjustment section 1004 in accordance with the frequency of the low-frequency signal to adjust first antenna 1001 to the resonance frequency point of the corresponding frequency. The first matching adjusting unit 1005 is electrically connected to the control unit 1003 and is configured to receive the low frequency signal and the high frequency signal. The control unit 1003 controls the first coupling unit 1005 to adjust the resonant frequency of the first antenna 1001 according to the signal strength of the high-frequency signal, so as to expand the high-frequency bandwidth of the first antenna 1001 and change the high-frequency operating band, and further expand the low-frequency bandwidth of the first antenna 1001 and change the low-frequency operating band. In the present embodiment, the control unit 1003 adjusts the first coupling adjustment unit 1004 and the first matching adjustment unit 1005 according to the frequencies of the low frequency signal and the high frequency signal to adjust the first antenna 1001 to the corresponding frequency resonance frequency point, specifically how to adjust, which is described below.
In another embodiment of the present invention, the control unit 1003 controls and adjusts the first coupling adjustment unit 1004 and the first matching adjustment unit 1005 according to the rssi (received Signal Strength indication) of the low frequency Signal and the high frequency Signal, so as to adjust the resonant frequency point of the first antenna 1001.
In this embodiment, the mobile terminal 200 may be an electronic device such as a mobile phone or a tablet.
Fig. 2 is a schematic circuit diagram of an embodiment of an antenna device 100 according to the present invention. In this embodiment, the first coupling adjustment unit 1004 is a parallel resonance adjustment, and includes a first switch 1014 and a plurality of inductors L1, L2, L3, and L4 (in this embodiment, only four inductors are used as an example, but not limited to four inductors, and fewer or more than four inductors may be included). In this embodiment, the first switch 1014 is a pair of four rf switches, the first switch 1014 is electrically connected to the control unit 1003, one end of the inductor L1-L4 is electrically connected to the first switch 1014, and the other end is grounded. The control unit 1003 controls the first switch 1014 to select one of the inductors L1-L4 according to the signal frequency of the low frequency signal, and adjusts the resonant frequency of the first antenna 1001, so as to expand the low frequency bandwidth of the first antenna 1001 and change the low frequency operating band. In an embodiment of the present invention, the inductance L1 is 10nH, the inductance L2 is 15nH, the inductance L3 is 20nH, and the inductance L4 is 25nH (for example only, a user may adjust the value range of the inductance mainly). Each inductance value corresponds to a certain frequency range, e.g., in the control unit 1003: when the low frequency range is 700-800MHz, the corresponding inductance value is 25nH, and in this frequency range, the first coupling adjustment unit 1004 selects the inductor connected to the inductance value of 25nH to adjust the first antenna 1001 to the most suitable resonance frequency point. When the low frequency range is set to 800-1000MHz, the corresponding inductance value is 20nH, and in this frequency range, the first coupling adjustment unit 1004 selects the inductor connected to the inductance value of 20nH to adjust the first antenna 1001 to the most suitable resonance frequency point. For example, when the frequency range of the low frequency signal is: when the frequency range is 700 MHZ to 800MHZ, the control unit 1003 controls the first coupling adjustment unit 1004 to be connected to the inductor L4 according to the frequency range, and the value of the inductor L4 is 25 nH. When the frequency range of the low-frequency signal is 800-1000MHz, the control unit 1003 controls the first coupling adjustment unit 1004 to be connected to the inductor L3 according to the frequency range, and the value of the inductor L3 is 20 nH. This is merely an example and is not intended to be a limitation of the present invention. The lower the signal frequency, the larger the inductance value of the inductor connected to the first coupling adjustment unit 1004. The user can set a certain frequency range in the control unit 1003 according to actual requirements to control the first coupling adjustment unit 1004 to select an inductor with a corresponding inductance value. As the set frequency range is smaller, the first coupling adjustment unit 1004 includes more inductance.
In this embodiment, the first matching adjustment unit 1005 is a series resonance adjustment, and includes a second switch 1015 and a plurality of inductors L5, L6, L7, and L8 (in this embodiment, only four inductors are used as an example, but not limited to four inductors, and fewer or more than four inductors may be included). In this embodiment, the second switch 1015 is a pair of four rf switches, the second switch 1015 is electrically connected to the control unit 1003, and one end of the inductors L5-L8 is electrically connected to the second switch 1015, and the other end is electrically connected to the first duplexer 1002. The control unit 1003 controls the second switch 1015 to select one of the inductors L5-L8 according to the signal strength of the high-frequency signal, and adjusts the resonant frequency point of the first antenna 1001, so as to expand the high-frequency bandwidth of the first antenna 1001 and change the high-frequency operating frequency band, and meanwhile, the first matching adjustment unit 1005 may further expand the low-frequency bandwidth of the first antenna 1001 and change the low-frequency operating frequency band. In an embodiment of the present invention, the inductance L5 is 3nH, the inductance L6 is 6nH, the inductance L7 is 9nH, and the inductance L8 is 12nH (for example only, a user may adjust the inductance value according to the main purpose). Each inductance value corresponds to a certain frequency range, e.g., in the control unit 1003: when the high frequency range is 1700-2000MHz, the corresponding inductance value is 6nH, and in this frequency range, the first matching adjustment unit 1005 selects the inductor connected to the inductance value of 6nH to adjust the first antenna 1001 to the most suitable resonance frequency point. When the high frequency range is set to 2000-3000MHz, the corresponding inductance value is 3nH, and in this frequency range, the first coupling adjustment unit 1004 selects the inductor connected to the inductance value of 3nH to adjust the first antenna 1001 to the most suitable resonance frequency point. For example, when the frequency range of the high frequency signal is 1700-. When the frequency range of the high frequency signal is 2000-3000MHz, the control unit 1003 controls the first matching adjustment unit 1004 to be connected to the inductor L5 according to the high frequency range. This is merely an example and is not intended to be a limitation of the present invention. The higher the signal frequency is, the smaller the inductance value of the inductor connected to the first matching adjustment unit 1005 is. The user can set a certain frequency range in the control unit 1003 according to actual requirements to control the first matching adjusting unit 1005 to select an inductor with a corresponding inductance value. As the set frequency range is smaller, the first matching adjusting unit 1005 includes more inductance.
Fig. 3 is a schematic circuit diagram of an embodiment of the antenna device 100a and the mobile terminal 200 according to the invention. In the present embodiment, the mobile terminal 200 includes the antenna device 100a, and the mobile terminal 200 may be an electronic device such as a mobile phone or a tablet. The antenna device 100a includes a first antenna 1001, a first duplexer 1002, a control unit 1003, a first coupling adjustment unit 1004, and a first matching adjustment unit 1005. The first coupling adjusting unit 1004 includes a first switch 1014 and a plurality of inductors L1, L2, L3, and L4, and the first matching adjusting unit 1005 includes a second switch 1015 and a plurality of inductors L5, L6, L7, and L8. The connection relationship and the operation principle of the first antenna 1001, the first duplexer 1002, the control unit 1003, the first coupling adjustment unit 1004 and the first matching adjustment unit 1005 are similar to those described in fig. 1, and therefore, the detailed description thereof is omitted.
In this embodiment, the antenna apparatus 100a further includes a second antenna 1006, a second duplexer 1007, a second matching adjuster 1008, and a second matching adjustment unit 1009. The second antenna 1006 is used for receiving and transmitting signals. The second duplexer 1007 is electrically connected to the second antenna 1006. The second duplexer 1007 includes a low pass filter and a high pass filter, and is configured to separate the signal received by the second antenna 1006 into a low frequency signal and a high frequency signal. The control unit 1003 is electrically connected to the second duplexer 1007, and is configured to determine signal strengths of the low-frequency signal and the high-frequency signal after being separated by the second duplexer 1007. The second coupling adjustment unit 1008 is electrically connected to the control unit 1003, and the control unit 1003 controls the second coupling adjustment unit 1008 to adjust the resonant frequency point of the second antenna 1006 according to the signal strength of the low-frequency signal, so as to expand the low-frequency bandwidth of the second antenna 1006 and change the low-frequency working frequency band of the first antenna 1006. The second matching adjusting unit 1009 is electrically connected to the control unit 1003. The control unit 1003 controls the second coupling unit 1009 to adjust the resonant frequency of the second antenna 1006 according to the signal strength of the high-frequency signal, so as to expand the high-frequency bandwidth of the second antenna 1006 and change the high-frequency operating frequency band, and further expand the low-frequency bandwidth of the second antenna 1006 and change the low-frequency operating frequency band.
In the present embodiment, the second coupling adjustment unit 1008 includes a third switch 1018 and a plurality of inductors L9, L10, L11, and L12 (in the present embodiment, only four inductors are used as an example, but not limited to four inductors, and fewer or more than four inductors may be included). In this embodiment, the third switch 1018 is a pair of four rf switches, the third switch 1018 is electrically connected to the control unit 1003, and one end of the inductors L9-L12 is electrically connected to the third switch 1018, and the other end is grounded. The control unit 1003 controls the third switch 1018 to select one of the inductors L9-L12 according to the signal strength of the low frequency signal, and adjusts the resonant frequency of the second antenna 1006 to expand the low frequency bandwidth of the second antenna 1006 and change the low frequency operating band. In the present embodiment, the second coupling adjustment unit 1008 is adjusted in a manner similar to that of the first coupling adjustment unit 1004, and thus will not be described in detail.
In the present embodiment, the second matching adjusting unit 1009 includes a fourth switch 1019 and a plurality of inductors L13, L14, L15, and L16 (in the present embodiment, four are taken as an example, but not limited to four, and less than or more than four inductors may be included). In this embodiment, the fourth switch 1019 is a pair of four rf switches, the fourth switch 1019 is electrically connected to the control unit 1003, and the inductors L13-L16 have one end electrically connected to the fourth switch 1019 and the other end electrically connected to the second duplexer 1007. The control unit 1003 controls the fourth switch 1019 to select one of the inductors L13-L16 according to the signal strength of the high frequency signal, and adjusts the resonant frequency point of the second antenna 1006 to expand the high frequency bandwidth of the second antenna 1006 and change the high frequency operating band, and further expand the low frequency bandwidth of the second antenna 1006 and change the low frequency operating band. In the present embodiment, the second coupling adjustment unit 1008 is adjusted in a manner similar to that of the first coupling adjustment unit 1004, and thus will not be described in detail.
In this embodiment, the antenna device 100a further includes a first sensing unit 1010 and a fifth switching unit 1011. The first sensing unit 1010 is electrically connected to the control unit 1003, and is used for sensing the distance between the human body and the first antenna 1001 and the second antenna 1006. The fifth switching unit 1011 is electrically connected between the control unit 1003 and the first antenna 1001 and the second antenna 1006, and is configured to select the first antenna 1001 or the second antenna 1006 to transmit or receive signals. The control unit 1003 is further configured to, when the first sensing unit 1010 senses that the distance that a human face approaches the first antenna 1001 is smaller than the distance that the human face approaches the second antenna 1006, output a first control signal by the control unit 1003, and control the fifth switching unit 1011 to select the second antenna 1006 to transmit or receive a signal. When the first sensing unit 1010 senses that the distance that the face approaches the second antenna 1006 is less than the distance of the first antenna 1001, the control unit 1003 outputs a second control signal, and controls the fifth switching unit 1011 to select the first antenna 1001 to transmit or receive signals. Therefore, the influence of the human body to the antenna bandwidth is avoided.
Fig. 4 is a circuit diagram of an embodiment of an antenna device 100a and a mobile terminal 200 according to the invention. In this embodiment, the antenna device 100b includes a first antenna 1001, a first duplexer 1002, a control unit 1003, a first coupling adjustment unit 1004, a first matching adjustment unit 1005, a second antenna 1006, a second duplexer 1007, a second coupling adjustment unit 1008, and a second matching adjustment unit 1009, and the connection relationship and the operation principle thereof are similar to those of the antenna device 100a shown in fig. 3, and therefore, the detailed description thereof is omitted. In this embodiment, the antenna device 100b further includes a second sensing unit 1012, a fifth switching unit 1011, and a third sensing unit 1013. The second sensing unit 1012 is electrically connected to the control unit 1003, and is used for sensing a distance between a human body and the first antenna 1001. The third sensing unit 1013 is electrically connected to the control unit 1003 and is used for sensing the distance between the human body and the second antenna 1006. When the second sensing unit 1012 senses that a human body touches or approaches the first antenna 1001, the control unit 1003 outputs a first control signal, and controls the fifth switching unit 1011 to select the second antenna 1006 to transmit or receive a signal. When the third sensing unit 1013 senses that a human body touches or approaches the second antenna 1006, the control unit 1003 outputs a second control signal and controls the fifth switching unit 1011 to select the first antenna 1001 to transmit or receive a signal. Therefore, the influence of the human body to the antenna bandwidth is avoided.
Referring to fig. 5, a diagram illustrating an adjusting effect of the first coupling adjusting unit 1004 according to an embodiment of the antenna device 100a and the mobile terminal 200 of the invention is shown. In this embodiment, the inductance L1 takes a value of 10nH, the inductance L2 takes a value of 15nH, the inductance L3 takes a value of 20nH, and the inductance L4 takes a value of 25nH (for example only, a user may adjust the value range of the inductance mainly). For the low-frequency band, when the inductor is not accessed, the low-frequency bandwidth coverage is only 250MHz, and when the inductor is accessed, the low-frequency bandwidth is expanded, and the working frequency band is changed. When the frequency range of the low-frequency signal is 700-800MHZ, the first switch 1014 selectively switches to the inductor L4, the low-frequency bandwidth is expanded from 250MHZ to 320MHZ, and the operating band is shifted to the left.
Fig. 6 is a diagram illustrating the adjustment effect of the first matching adjustment unit 1005 in the antenna device 100a and the mobile terminal 200 according to an embodiment of the invention. In this embodiment, the inductance L5 takes a value of 3nH, the inductance L6 takes a value of 6nH, the inductance L7 takes a value of 9nH, and the inductance L8 takes a value of 12nH (for example only, a user may adjust the value range of the inductance according to the main purpose). For the low-frequency band, when no inductor is connected, the bandwidth coverage of the low frequency is only 250 MHz; for the high frequency band, the high frequency bandwidth is only 100MHZ when no inductor is connected. When the inductor is connected, the low-frequency bandwidth is expanded, the working frequency band is changed, and meanwhile, the high-frequency bandwidth is expanded, and the working frequency band is changed. When the frequency range of the high-frequency signal is 1700-2000MHz, the second switch 1015 selectively switches to the inductor L6, the high-frequency bandwidth is expanded from 100MHz to 330MHz, and the low-frequency bandwidth is further expanded to 340MHz, and the operating frequency band is shifted to the left.
Compared with the prior art, according to the antenna device and the mobile terminal thereof provided by the embodiment of the invention, the control unit 1003 controls the first coupling adjustment unit 1004 to adjust the resonant frequency point of the first antenna 1001 according to the signal strength received by the first antenna 1001, so as to expand the low-frequency bandwidth of the first antenna 1001 and change the low-frequency working frequency band of the first antenna 1001. The control unit 1003 controls the first coupling unit 1005 to adjust the resonant frequency point of the first antenna 1001 according to the signal strength received by the first antenna 1001, so as to further expand the low frequency bandwidth of the first antenna 1001 and change the low frequency operating band, and simultaneously expand the high frequency bandwidth of the first antenna 1001 and change the high frequency operating band. The first coupling adjustment unit 1004 combines with the first matching adjustment unit 1005 to expand the high frequency bandwidth and enhance the low frequency bandwidth, thereby solving the problem of limited bandwidth and coverage of the terminal product and improving the quality of the transmission and reception signals of the terminal product.
It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the present invention as claimed in the appended claims, as long as they fall within the true spirit of the present invention.
Claims (9)
1. An antenna device, characterized in that the antenna device comprises:
a first antenna for receiving and transmitting signals;
the first duplexer is electrically connected to the first antenna and is used for separating the signal received by the first antenna into a low-frequency signal and a high-frequency signal;
the control unit is electrically connected with the first duplexer and used for judging the signal intensity of the low-frequency signal and the high-frequency signal after the first duplexer is separated;
the first coupling adjusting unit is electrically connected to the control unit, and the control unit controls the first coupling adjusting unit to adjust the resonance frequency point of the first antenna according to the signal intensity of the low-frequency signal separated by the first duplexer so as to expand the low-frequency bandwidth of the first antenna and change the low-frequency working frequency band;
the first matching and adjusting unit is electrically connected to the control unit, and the control unit controls the first matching unit to adjust the resonance frequency point of the first antenna according to the signal intensity of the high-frequency signal separated by the first duplexer so as to expand the high-frequency bandwidth and change the high-frequency working frequency band, and further expand the low-frequency bandwidth and change the low-frequency working frequency band of the first antenna.
2. The antenna device according to claim 1, wherein the first coupling adjustment unit includes:
the first change-over switch is electrically connected with the control unit;
one end of the at least one inductor is electrically connected to the first change-over switch, and the other end of the at least one inductor is grounded; wherein
The control unit controls the first switch to select one of the at least one inductor according to the signal intensity of the low-frequency signal so as to adjust the resonance frequency point of the first antenna, expand the low-frequency bandwidth of the first antenna and change the low-frequency working frequency band.
3. The antenna device according to claim 1, wherein the first matching adjustment unit includes:
the second change-over switch is electrically connected with the control unit;
one end of the at least one inductor is electrically connected to the second change-over switch, and the other end of the at least one inductor is electrically connected to the first duplexer; wherein
The control unit controls the second switch to select one of the at least one inductor according to the signal intensity of the high-frequency signal so as to adjust the resonance frequency point of the first antenna, expand the high-frequency bandwidth and change the high-frequency working frequency band, and further expand the low-frequency bandwidth of the first antenna and change the low-frequency working frequency band.
4. The antenna device of claim 1, wherein the antenna device further comprises:
a second antenna for receiving and transmitting signals;
the second duplexer is electrically connected to the second antenna and is used for separating the signal received by the second antenna into a low-frequency signal and a high-frequency signal;
the second coupling adjusting unit is electrically connected to the control unit, and the control unit controls the second coupling adjusting unit to adjust the resonance frequency point of the second antenna according to the signal intensity of the low-frequency signal separated by the second duplexer so as to expand the low-frequency bandwidth of the second antenna and change the low-frequency working frequency band;
and the second matching and adjusting unit is electrically connected with the control unit, and the control unit controls the second matching unit to adjust the resonance frequency point of the second antenna according to the signal intensity of the high-frequency signal separated by the second duplexer so as to expand the high-frequency bandwidth and change the high-frequency working frequency band, and further expand the low-frequency bandwidth and change the low-frequency working frequency band of the second antenna.
5. The antenna device according to claim 4, wherein the second coupling adjustment unit includes:
the third change-over switch is electrically connected with the control unit;
one end of the at least one inductor is electrically connected to the third change-over switch, and the other end of the at least one inductor is grounded; wherein
The control unit controls the third switch to select one of the at least one inductor according to the signal strength of the low-frequency signal separated by the second duplexer, so as to adjust the resonance frequency point of the second antenna, expand the low-frequency bandwidth of the second antenna and change the low-frequency working frequency band.
6. The antenna device according to claim 4, wherein the second matching adjustment unit includes:
a fourth change-over switch electrically connected to the control unit;
one end of the at least one inductor is electrically connected to the fourth selector switch, and the other end of the at least one inductor is electrically connected to the second duplexer; wherein
The control unit controls the fourth switch to select one of the at least one inductor according to the signal intensity of the high-frequency signal separated by the second duplexer, adjusts the resonance frequency point adjusted by the second antenna so as to expand the high-frequency bandwidth and change the high-frequency working frequency band, and further expands the low-frequency bandwidth of the second antenna and changes the low-frequency working frequency band.
7. The antenna apparatus of claim 4, further comprising:
the first sensing unit is electrically connected with the control unit and used for sensing the distance between a human body and the first antenna and the distance between the human body and the second antenna;
the fifth switching unit is electrically connected between the control unit and the first antenna and between the control unit and the second antenna and is used for selecting the first antenna or the second antenna to transmit or receive signals; wherein
The control unit is further configured to output a first control signal when the first sensing unit senses that the distance from the face to the first antenna is smaller than the distance from the face to the second antenna, and control the fifth switching unit to select the second antenna to transmit or receive a signal;
the control unit is further configured to output a second control signal and control the fifth switching unit to select the first antenna to transmit or receive a signal when the first sensing unit senses that the distance from the face to the second antenna is smaller than the distance from the face to the first antenna.
8. The antenna apparatus of claim 4, further comprising:
the second sensing unit is electrically connected with the control unit and the first antenna and used for sensing the distance between a human body and the first antenna;
the third sensing unit is electrically connected with the control unit and the second antenna and used for sensing the distance between a human body and the second antenna;
the fifth switching unit is electrically connected between the control unit and the first antenna and between the control unit and the second antenna and is used for selecting the first antenna or the second antenna to transmit or receive signals; wherein
The control unit is further used for outputting a first control signal and controlling the fifth switching unit to select the second antenna to transmit or receive signals when the second sensing unit senses that a human body touches or approaches the first antenna;
the control unit is further used for outputting a second control signal when the third sensing unit senses that a human body touches or approaches the second antenna, and controlling the fifth switching unit to select the first antenna to transmit or receive signals.
9. A mobile terminal comprising an antenna arrangement according to any of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611186204.4A CN108206331B (en) | 2016-12-20 | 2016-12-20 | Antenna device and mobile terminal thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611186204.4A CN108206331B (en) | 2016-12-20 | 2016-12-20 | Antenna device and mobile terminal thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108206331A CN108206331A (en) | 2018-06-26 |
| CN108206331B true CN108206331B (en) | 2020-11-03 |
Family
ID=62603493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611186204.4A Active CN108206331B (en) | 2016-12-20 | 2016-12-20 | Antenna device and mobile terminal thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108206331B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821031B (en) * | 2020-12-29 | 2024-01-02 | Oppo广东移动通信有限公司 | Electronic equipment |
| CN112751212B (en) * | 2020-12-29 | 2023-08-04 | Oppo广东移动通信有限公司 | Antenna system and electronic device |
| CN114924134B (en) * | 2022-05-30 | 2023-12-19 | Oppo广东移动通信有限公司 | Electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102439789A (en) * | 2008-12-24 | 2012-05-02 | 雷斯潘公司 | RF front-end module and antenna systems |
| CN102832960A (en) * | 2011-06-14 | 2012-12-19 | 英业达股份有限公司 | Wireless communication device and method thereof |
| CN106100648A (en) * | 2016-07-29 | 2016-11-09 | 北京慧清科技有限公司 | Two-band double antenna receiving and transmitting front end Circuits System |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3672196B2 (en) * | 2002-10-07 | 2005-07-13 | 松下電器産業株式会社 | Antenna device |
| JP5499735B2 (en) * | 2010-01-28 | 2014-05-21 | 富士通モバイルコミュニケーションズ株式会社 | Mobile device |
| US10177744B2 (en) * | 2014-10-30 | 2019-01-08 | Mediatek Singapore Pte. Ltd. | Wireless communication unit, integrated circuit and method for antenna tuning |
-
2016
- 2016-12-20 CN CN201611186204.4A patent/CN108206331B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102439789A (en) * | 2008-12-24 | 2012-05-02 | 雷斯潘公司 | RF front-end module and antenna systems |
| CN102832960A (en) * | 2011-06-14 | 2012-12-19 | 英业达股份有限公司 | Wireless communication device and method thereof |
| CN106100648A (en) * | 2016-07-29 | 2016-11-09 | 北京慧清科技有限公司 | Two-band double antenna receiving and transmitting front end Circuits System |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108206331A (en) | 2018-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2304843B1 (en) | An apparatus, method and computer program for wireless communication | |
| CN109088151B (en) | Antenna system and mobile terminal | |
| US7348931B2 (en) | Unbalanced power feeding antenna device for making radio communications | |
| US11688930B2 (en) | Antenna apparatus and mobile terminal | |
| US10277287B2 (en) | Antenna system and harmonic suppression element | |
| WO2016154851A1 (en) | Terminal | |
| CN1476681A (en) | Mobile communication system having multi-band antenna | |
| CN108206331B (en) | Antenna device and mobile terminal thereof | |
| TWI540788B (en) | Wireless communication device and method of adjusting antenna matching | |
| TW201530914A (en) | Antenna assembly and wireless communication device having the same | |
| WO2009027182A1 (en) | An apparatus, method and computer program | |
| US20150118984A1 (en) | High frequency circuit module | |
| CN110299618B (en) | Antenna system and terminal | |
| WO2015074251A1 (en) | Adjustable antenna and terminal | |
| CN105720339A (en) | Dual-band adjustable band-pass filter | |
| US11956069B2 (en) | Multiplexer, filter, and communication device | |
| JP2016082562A (en) | Antenna structure and electronic equipment including antenna structure | |
| CN104218306A (en) | Antenna device and method for setting antenna | |
| CN104466361A (en) | Mobile phone and antenna thereof | |
| CN105490025B (en) | Antenna frequency band adjusting device and method thereof | |
| JP2014230276A (en) | Radio frequency matching circuit and wireless communication device | |
| CN210578543U (en) | Radio frequency front-end system of 5G smart phone | |
| CN111276797B (en) | Antenna device and terminal | |
| CN108172973B (en) | Electronic equipment and antenna processing method | |
| CN110677168A (en) | 5G terminal signal transceiving device and method and terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |