EP3190661B1 - Terminal de communication - Google Patents

Terminal de communication Download PDF

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Publication number
EP3190661B1
EP3190661B1 EP14902918.3A EP14902918A EP3190661B1 EP 3190661 B1 EP3190661 B1 EP 3190661B1 EP 14902918 A EP14902918 A EP 14902918A EP 3190661 B1 EP3190661 B1 EP 3190661B1
Authority
EP
European Patent Office
Prior art keywords
antenna
terminal
communications terminal
sub
electrically connected
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
Application number
EP14902918.3A
Other languages
German (de)
English (en)
Other versions
EP3190661A1 (fr
EP3190661A4 (fr
Inventor
Chien-Ming Lee
Hanyang Wang
Jianren Huang
Haowei XU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
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Publication of EP3190661A1 publication Critical patent/EP3190661A1/fr
Publication of EP3190661A4 publication Critical patent/EP3190661A4/fr
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Publication of EP3190661B1 publication Critical patent/EP3190661B1/fr
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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
    • H01Q5/378—Combination of fed elements with parasitic elements
    • H01Q5/385—Two or more parasitic elements
    • 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
    • H01Q1/243—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 with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/04—Multimode antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
    • H01Q3/247—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching by switching different parts of a primary active element
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/06—Details
    • H01Q9/14—Length of element or elements adjustable
    • H01Q9/145—Length of element or elements adjustable by varying the electrical length
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

Definitions

  • the present invention relates to communications technologies, and in particular, to a communications terminal.
  • an inverted F antenna Inverted F Antenna, IFA for short
  • a planar inverted F antenna Plant Inverted F Antenna, PIFA for short
  • impact on the terminal antenna is different when the terminal is approached by a left side of a head or by a left hand and when the terminal is approached by a right side of the head or by a right hand.
  • US 2013/307740 A1 describes an active differential antenna that provides for improved performance for wireless communication systems across a wide set of use cases and environments.
  • a balanced antenna structure along with switch assembly provides the differential mode radiation which results in minimal coupling to the components and items in the near field of the antenna. This results in an efficient antenna that is well isolated from the local environment of the antenna.
  • the switch assembly is configured to switch the feed and ground connections of the differential design when needed to provide similar antenna performance for both "against head left" and "against head right" use cases for a cellular handset application for example.
  • An active component or circuit can be integrated or coupled to the antenna design to provide the capability to dynamically balance the antenna to maintain pattern symmetry and efficiency.
  • WO 2013/005080 A1 discloses an apparatus comprising: a first port configured to couple to a first location on an antenna; a second port configured to couple to a second location on the antenna; a switch configured to switch between a first electrical configuration in which the first port is coupled to radio circuitry, and a second electrical configuration in which the second port is coupled to the radio circuitry; first reactive circuitry configured to impedance match the antenna with the radio circuitry at a first operational resonant frequency band; and second reactive circuitry, different to the first reactive circuitry, and configured to impedance match the antenna with the radio circuitry at a second operational resonant frequency band, different to the first operational resonant frequency band.
  • EP 2 597 724 A1 shows a portable communication device (100) that includes an appearance (110), a substrate (120) and a switchable resonant antenna (130).
  • the substrate is disposed in the appearance, and the substrate has a ground plane (122).
  • the switchable resonant antenna comprises a first connection portion (132), a switching unit (134), a first metal element (136) and a second metal element (138), where the first connection portion is electrically coupled between the ground plane and the switching unit, the switching unit is configured to electrically couple the first connection portion to the first metal element or the second metal element according to a control signal generated corresponding to a detecting result, in order to generate a first resonant mode.
  • US 2013/147672 A1 discloses antenna systems comprising modal antennas for use in diversity and similar schemes include a modal antenna capable of multiple antenna modes wherein a distinct radiation pattern exists for each antenna mode, and a control signal for directing variation of the antenna modes. Methods for designing modal diversity antennas are further disclosed.
  • JP 2012 186562 provides an antenna device comprising a first conductor, a second conductor, a feeding portion, and a switch.
  • the first conductor is planar and includes an opening.
  • the second conductor crosses an extended surface obtained by virtually extending the surface of the first conductor to the opening.
  • the feeding portion supplies the second conductor with electric power.
  • the switch varies orientation of a current flowing through the second conductor. A vector sum of the current flowing through the second conductor and a current induced by the first conductor varies according to switching of the switch.
  • US 2008/266190 A1 provides an antenna device configured to be fed at a feed portion included in a printed board of a radio apparatus.
  • the antenna device has a feed element connected to the feed portion.
  • the antenna device has a first parasitic element at least a portion of which is arranged close and electrically coupled to at least a portion of the feed element.
  • the first parasitic element is loaded with a first frequency shifter.
  • the antenna device has a second parasitic element at least a portion of which is arranged close and electrically coupled to at least a portion of the feed element.
  • the second parasitic element is loaded with a second frequency shifter.
  • the present invention provides a communications terminal, to resolve a problem in the prior art that performance is different when the terminal is approached by a left side of a head or by a left hand and when the terminal is approached by a right side of the head or by a right hand.
  • a communications terminal including:
  • the antenna further includes a first inductor; the first inductor is disposed between the first sub-antenna and the first contact end.
  • the antenna further includes a second inductor; the second inductor is disposed between the second sub-antenna and the second contact end.
  • the embodiments of the present invention provide the communications terminal, including a feed terminal, a ground terminal, an antenna, and a switch part, where the antenna is an asymmetric structure; the feed terminal is electrically connected to a feed circuit in the terminal, and the ground terminal is electrically connected to a ground end in the terminal; the switch part is configured to switch between a first connection manner and a second connection manner; the first connection manner includes electrically connecting the feed terminal to a first end of the antenna, and electrically connecting the ground terminal to a second end of the antenna; and the second connection manner includes electrically connecting the ground terminal to the first end of the antenna, and electrically connecting the feed terminal to the second end of the antenna.
  • the communications terminal includes only one feed terminal and one ground terminal, and therefore a quantity of pads can be reduced.
  • the switch part may be used to switch to a different connection manner, so that the communications terminal may be applicable to different holding manners of the left hand and the right hand, or may be applicable to different head approach postures. This ensures that impact on the communications terminal is similar when the communications terminal is approached by the left side of the head or by the left hand and when the communications terminal is approached by the right side of the head or by the right hand, and further ensures similar performance gains of the communications terminal.
  • FIG. 1a is a schematic structural diagram of a communications terminal 1 according to Embodiment 1 of the present invention.
  • a communications terminal 1 includes: a feed terminal 10, a ground terminal 11, an antenna 12, and a switch part 13.
  • the feed terminal 10 is electrically connected to a feed circuit in the communications terminal, and the ground terminal 11 is electrically connected to a ground end in the communications terminal.
  • the communications terminal herein may be a mobile device, a user terminal, a wireless communications device, and the like.
  • terminal mentioned in a context always refers to the communications terminal.
  • the feed circuit herein is configured to process a transmit signal generated by a transmitter in the terminal and provide the signal to the communications terminal 1, and after the communications terminal 1 receives the signal, process the received signal and send the signal to a receiver in the terminal.
  • the antenna 12 is an asymmetric structure.
  • a ring antenna of an asymmetric structure may be used to implement the foregoing antenna 12.
  • the switch part 13 is configured to switch between a first connection manner and a second connection manner.
  • the first connection manner includes electrically connecting the feed terminal 10 to a first end 120 of the antenna 12, and electrically connecting the ground terminal 11 to a second end 121 of the antenna 12;
  • the second connection manner includes electrically connecting the ground terminal 11 to the first end 120 of the antenna 12, and electrically connecting the feed terminal 10 to the second end 121 of the antenna 12.
  • the foregoing first connection manner and second connection manner respectively correspond to FIG. 1a and FIG. 1b .
  • two ends of the switch part 13 that are respectively connected to the feed terminal 10 and ground terminal 11 serve as fixed ends
  • two ends of the switch part 13 that are respectively connected to the first end 120 and the second end 121 of the antenna 12 serve as contact ends.
  • the two ends of the switch part 13 that are respectively connected to the feed terminal 10 and ground terminal 11 may serve as contact ends
  • the two ends of the switch part 13 that are respectively connected to the first end 120 and the second end 121 of the antenna 12 may serve as fixed ends.
  • Principles of the foregoing two manners are similar. Subsequent embodiments are described in detail mainly by using the first type as an example.
  • the first end 120 of the antenna 12 is electrically connected to one of the two contact ends of the switch part 13, thereby being connected to the feed terminal 10; the second end 121 of the antenna 12 is electrically connected to the other one of the two contact ends of the switch part 13, thereby being connected to the ground terminal 11; in FIG. 1b , the first end 120 of the antenna 12 is electrically connected to one of the two contact ends of the switch part 13, thereby being connected to the ground terminal 11; the second end 121 of the antenna 12 is electrically connected to the other one of the two contact ends of the switch part 13, thereby being connected to the feed terminal 10.
  • Loss and attenuation may occur due to contact with a human head or hand when an area with strong electric field strength distributed of the terminal antenna is approached by the head or hand; impact on the terminal antenna is different because a manner of holding the terminal by a left hand and a manner of holding the terminal by a right hand are different or because head postures of approaching the terminal are different; as a result, performance is different when the terminal is approached by a left side of the head or by the left hand and when the terminal is approached by a right side of the head or by the right hand.
  • a connection between the antenna 12 and the feed terminal 10 and that between the antenna 12 and the ground terminal 11 are different when the switch part 13 is switched between the first connection manner and the second connection manner, that is, different electric field strength distribution is caused on the antenna 12.
  • different holding manners of the left hand and the right hand or different head approach postures can be matched, so that by switching a connection manner, it is ensured that impact on the communications terminal 1 is similar when the communications terminal 1 is approached by the left side of the head or by the left hand and when the communications terminal 1 is approached by the right side of the head or by the right hand, and further ensures similar performance gains of the communications terminal 1.
  • the switch part 13 of the communications terminal 1 may be disposed in a position which enables the area with strong electric field strength distributed of the antenna 12 to be far from the holding position of the left hand or the position in which the communications terminal 1 is approached by the left side of the head, and in this case, performance of the communications terminal 1 is relatively good.
  • the switch part 13 of the communications terminal 1 may be disposed in a position which enables the area with strong electric field strength distributed of the antenna 12 to be far from a holding position of the right hand or a position in which the communications terminal 1 is approached by the right side of the head, and in this case, the performance of the communications terminal 1 is also relatively good. This ensures that impact on the communications terminal 1 is similar when the terminal is approached by the left side of the head or by the left hand and when the terminal is approached by the right side of the head or by the right hand, and further ensures similar performance gains of the communications terminal 1.
  • a change of field strength distribution of the antenna 12 is specifically used below to explain the foregoing process.
  • the switch part 13 is switched to the connection manner shown in FIG. 1a .
  • the switch part 13 is switched to the connection manner shown in FIG. 1b .
  • This ensures same impact on the communications terminal 1 in different holding manners of the left hand and the right hand or caused by different head approach postures, and further ensures similar performance gains of the communications terminal 1.
  • electric field strength distribution may be different for the antenna 12 of different asymmetric structures. Therefore, a shape of the antenna 12 may be determined according to actually required radiation efficiency of the communications terminal 1.
  • This embodiment of the present invention provides the communications terminal, including a feed terminal, a ground terminal, an antenna, and a switch part, where the antenna is an asymmetric structure; the feed terminal is electrically connected to a feed circuit in the terminal, and the ground terminal is electrically connected to a ground end in the terminal; the switch part is configured to switch between a first connection manner and a second connection manner; the first connection manner includes electrically connecting the feed terminal to a first end of the antenna, and electrically connecting the ground terminal to a second end of the antenna; and the second connection manner includes electrically connecting the ground terminal to the first end of the antenna, and electrically connecting the feed terminal to the second end of the antenna.
  • the communications terminal includes only one feed terminal and one ground terminal, and therefore a quantity of pads can be reduced.
  • the switch part may be used to switch to a different connection manner, so that the communications terminal may be applicable to different holding manners of the left hand and the right hand, or may be applicable to different head approach postures. This ensures that impact on the communications terminal is similar when the communications terminal is approached by the left side of the head or by the left hand and when the communications terminal is approached by the right side of the head or by the right hand, and further ensures similar performance gains of the communications terminal.
  • FIG. 2a is a schematic structural diagram of a communications terminal according to Embodiment 2 of the present invention.
  • a communications terminal 2 includes a feed terminal 10, a ground terminal 11, an antenna 20, and a switch part 13, where the antenna 20 includes a ring antenna 21 of a symmetric structure and an inductor 22.
  • the communications terminal 2 further includes a sensor 23 and a controller 24.
  • the feed terminal 10 is electrically connected to a feed circuit in the terminal
  • the ground terminal 11 is electrically connected to a ground end in the terminal.
  • the communications terminal herein may be a mobile device, a user terminal, a wireless communication device, and the like.
  • the feed terminal 10 is electrically connected to a first end 200 of the antenna 20, and the ground terminal 11 is electrically connected to a second end 201 of the antenna 20; the inductor 22 is disposed between the feed terminal 10 and the first end 200 of the antenna 20; one of two fixed ends of the switch part 13 is electrically connected to the feed terminal 10 while the other is electrically connected to the ground terminal 11; one of two contact ends of the switch part 13 is electrically connected to the first end 200 of the antenna 20, that is, a first end of the ring antenna 21 of the symmetric structure while the other is electrically connected to the second end 201 of the antenna 20, that is, a second end of the ring antenna 21 of the symmetric structure.
  • the sensor 23 is configured to detect a left hand status and a right hand status
  • the controller 24 is separately connected to the sensor 23 and the switch part 13, and is configured to control, according to a detection result of the sensor 23, the switch part 13 to switch to a connection manner that matches the detection result.
  • the sensor may be a voltage-sensitive sensor, an accelerometer, a gyroscope, a magnetometer, an optical proximity sensor, and the like.
  • FIG. 2b shows a diagram of electric field strength distribution of the ring antenna 21 of the symmetric structure when an inductor is not added.
  • FIG. 2b has no switch part
  • FIG. 2a has the switch part 13 and is a diagram of electric field strength distribution after the inductor 22 is disposed between the feed terminal 10 and the first end 200 of the antenna 20.
  • a structure in FIG. 2c is similar to that in FIG. 2a , but the switch part 13 in FIG. 2c is switched to a second connection manner, where in this case, the inductor 22 is disposed between the feed terminal 10 and the second end 201 of the antenna 20. It may be learned by comparing FIG. 2a with FIG.
  • the first end 200 of the antenna 20 is electrically connected to one of the two contact ends of the switch part 13, thereby being connected to the feed terminal 10, and the second end 201 is electrically connected to the other one of the two contact ends of the switch part 13, thereby being connected to the ground terminal 11.
  • the first end 200 of the antenna 20 is electrically connected to one of the two contact ends of the switch part 13, thereby being connected to the ground terminal 11, and the second end 201 of the antenna 20 is electrically connected to the other one of the two contact ends of the switch part 13, thereby being connected to the feed terminal 10.
  • the ring antenna 21 is a symmetric structure, because the inductor 22 is further disposed in the communications terminal 2, the inductor 22 can affect electric field strength distribution of the ring antenna 21, so that electric field strength distribution of the antenna 20 becomes uneven on the whole.
  • the switch part 13 when the switch part 13 is switched to the connection manner shown in FIG. 2a , strongest electric field distribution points, of LB, HB1, and HB2, that represent radiation efficiency of the ring antenna 21 are all shown in FIG. 2a by using small blocks.
  • strongest electric field distribution points, of LB, HB1, and HB2 that represent the radiation efficiency of the ring antenna 21 are all shown in FIG. 2c by using small blocks. It may be learned that, electric field strength distribution of the ring antenna 21 is different in these two working states. Therefore, in practice, the sensor 23 can detect the left hand status and the right hand status.
  • the detection result is sent to the controller 24 and the controller 24 may control the switch part 13 according to the detection result, so that the switch part 13 is switched to the connection manner shown in FIG. 2a .
  • the controller 24 controls the switch part 13, so that the switch part 13 is switched to the connection manner shown in FIG. 2c .
  • a value of the inductor 22 is determined by a working frequency of the communications terminal 2.
  • the inductor 22 may be further disposed between the ground terminal 11 and the first end 200 of the antenna 20 or the second terminal 201 of the antenna 20.
  • FIG. 2d and FIG. 2e For a specific connection relationship and field strength distribution thereof, refer to FIG. 2d and FIG. 2e , where working principles thereof are similar with those of FIG. 2c and FIG. 2a , which are not described herein again.
  • This embodiment of the present invention provides the communications terminal, including a feed terminal, a ground terminal, an antenna, and a switch part, where the antenna is an asymmetric structure; the feed terminal is electrically connected to a feed circuit in the terminal, and the ground terminal is electrically connected to a ground end in the terminal; the switch part is configured to switch between a first connection manner and a second connection manner; the first connection manner includes electrically connecting the feed terminal to a first end of the antenna, and electrically connecting the ground terminal to a second end of the antenna; and the second connection manner includes electrically connecting the ground terminal to the first end of the antenna, and electrically connecting the feed terminal to the second end of the antenna.
  • This embodiment of the present invention provides the communications terminal, including a feed terminal, a ground terminal, an antenna, and a switch part, where the antenna is an asymmetric structure; the feed terminal is electrically connected to a feed circuit in the terminal, and the ground terminal is electrically connected to a ground end in the terminal; the switch part is configured to switch between a first connection manner and a second connection manner; the first connection manner includes electrically connecting the feed terminal to a first end of the antenna, and electrically connecting the ground terminal to a second end of the antenna; and the second connection manner includes electrically connecting the ground terminal to the first end of the antenna, and electrically connecting the feed terminal to the second end of the antenna.
  • the communications terminal includes only one feed terminal and one ground terminal, and therefore a quantity of pads can be reduced.
  • the switch part may be used to switch to a different connection manner, so that the communications terminal may be applicable to different holding manners of the left hand and the right hand, or may be applicable to different head approach postures. This ensures that impact on the communications terminal is similar when the communications terminal is approached by the left side of the head or by the left hand and when the communications terminal is approached by the right side of the head or by the right hand, and further ensures similar performance gains of the communications terminal.
  • FIG. 3a is a schematic structural diagram of a communications terminal according to Embodiment 3 of the present invention.
  • a communications terminal 3 includes: a feed terminal 10, a ground terminal 11, an antenna 12, and a single-pole double-throw switch 13.
  • the antenna 12 includes a T-shape part 30, a first sub-antenna 31, and a second sub-antenna 32.
  • the feed terminal 10 is electrically connected to a feed circuit in the communications terminal, and the ground terminal 11 is electrically connected to a ground end in the communications terminal.
  • the communications terminal herein may be a mobile device, a user terminal, a wireless communication device, and the like.
  • the feed circuit herein is configured to process a transmit signal generated by a transmitter in the terminal and provide the signal to the communications terminal 3, and after the communications terminal 3 receives the signal, process the received signal and send the signal to a receiver in the terminal.
  • the inverted T-shape part 30 includes a horizontal bar and a vertical leg.
  • the vertical leg of the inverted T-shape part 30 is electrically connected to the feed terminal 10.
  • the first sub-antenna 31 and the second sub-antenna 32 are respectively disposed on two sides of the vertical leg.
  • a fixed end of the single-pole double-throw switch 13 is electrically connected to the ground terminal 11.
  • a first contact end 130 of the single-pole double-throw switch 13 is electrically connected to the first sub-antenna 31, and a second contact end 131 of the single-pole double-throw switch 13 is electrically connected to the second sub-antenna 32.
  • FIG. 3b is a schematic structural diagram of a communications terminal according to Embodiment 3 of the present invention.
  • the single-pole double-throw switch 13 is in another connection manner.
  • the first sub-antenna 31 and the second sub-antenna 32 are oppositely disposed in relative to the vertical leg of the inverted T-shape part 30. Therefore, when the single-pole double-throw switch 13 is in a state shown in FIG. 3a , the first sub-antenna 31 is connected between the feed terminal 10 and the ground terminal 11.
  • the first sub-antenna 31 is disposed on a left side, in practice, such disposition is more suitable for a behavior that a left hand holds the communications terminal or the communications terminal is approached by a left side of a head, where in this case, the other four fingers except the thumb are on a right side, and therefore impact on the communications terminal 3 is small.
  • the single-pole double-throw switch 13 is in the connection manner shown in FIG. 3b , the second sub-antenna 32 is connected between the feed terminal 10 and the ground terminal 11.
  • the communications terminal 3 can be applicable to different holding manners of the left hand and the right hand or different head approach postures in using different connection manners of the single-pole double-throw switch 13, that is, by switching a manner of a ground leg of the sub-antennas.
  • the first sub-antenna 31 may be a metal conducting line that is disposed for a distance on a direction parallel with the horizontal bar and departing from the second sub-antenna 32 and that is electrically connected to the first contact end 130 of the single-pole double-throw switch 13 after being bent twice;
  • the second sub-antenna 32 may be a metal conducting line that is disposed for a distance on a direction parallel with the horizontal bar and departing from the first sub-antenna 31 and that is electrically connected to the second contact end 131 of the single-pole double-throw switch 13 after being bent twice.
  • the metal conducting line, in the first sub-antenna 31, parallel with the horizontal bar of the inverted T-shape part 30 is in a horizontal relationship with the horizontal bar.
  • This is equivalent to forming a capacitor, and a bent part of the metal conducting line of the first sub-antenna 31 is equivalent to a formed inductor; therefore, the capacitor and the inductor may form resonate, thereby implementing radiation of an electromagnetic wave by the first sub-antenna 31.
  • the second sub-antenna 32 a principle thereof is similar.
  • the first sub-antenna 31 is used as an example.
  • the foregoing vertical distance may be generally determined according to a working frequency of the communications terminal 3.
  • a principle of the second sub-antenna 32 is similar, and a vertical distance from the metal conducting line, of the second sub-antenna 32, parallel with the horizontal bar to the horizontal bar may also be determined according to a working frequency of the communications terminal 3. It should be noted that, in FIG. 3a and FIG. 3b , structures of the first sub-antenna 31 and the second sub-antenna 32 are merely examples.
  • a quantity of bending times of the foregoing metal conducting line, the foregoing vertical distance to the horizontal bar, and the like may all be determined according to the working frequency of the communications terminal 3.
  • the first sub-antenna 31 and the second sub-antenna 32 may be symmetrically or asymmetrically disposed on the two sides of the vertical leg of the inverted T-shape part 30.
  • the communications terminal 3 may further include a first inductor 34, where the first inductor 34 is disposed between the first sub-antenna 31 and the first contact end 130, and a function of the first inductor 34 is similar to an inductor function of the first sub-antenna 31 itself, and an actual value of the first inductor 34 may be determined according to the working frequency of the communications terminal 3.
  • the communications terminal 3 may further include a second inductor 35, where the second inductor 35 is disposed between the second sub-antenna 32 and the second contact end 131, and a function of the second inductor 35 is similar to an inductor function of the second sub-antenna 32 itself, and an actual value of the second inductor 35 may be determined according to the working frequency of the communications terminal 3.
  • the communications terminal 3 may further include a sensor 36 and a controller 37.
  • the sensor 36 is configured to detect a left hand status and a right hand status
  • the controller 37 is separately connected to the sensor 36 and the single-pole double-throw switch 13, and is configured to control, according to a detection result of the sensor 36, the single-pole double-throw switch 13 to switch to a connection manner that matches the detection result.
  • the sensor 36 and the controller 37 are not shown in FIG. 3a and FIG. 3b , and specific connections thereof are similar to those in FIG. 2a , which are not described herein again.
  • FIG. 3c is a schematic diagram of performance when a communications terminal provided in Embodiment 3 of the present invention is used in a left hand
  • FIG. 3d is a schematic diagram of performance when a communications terminal provided in Embodiment 3 of the present invention is used in a right hand.
  • a horizontal axis represents a frequency
  • a vertical axis represents a performance gain of the communications terminal 3
  • a solid line represents a performance gain of the single-pole double-throw switch 13 when it is in the state shown in FIG. 3a
  • a dotted line represents a performance gain of the single-pole double-throw switch 13 when it is in the state shown in FIG. 3b .
  • This embodiment of the present invention provides the communications terminal, including a feed terminal, a ground terminal, an antenna, and a single-pole double-throw switch, where the antenna includes an inverted T-shape part, a first sub-antenna, and a second sub-antenna; the feed terminal is electrically connected to a feed circuit in the communications terminal, and the ground terminal is electrically connected to a ground end in the communications terminal; a vertical leg of the inverted T-shape part is electrically connected to the feed terminal; the first sub-antenna and the second sub-antenna are respectively disposed on two sides of the vertical leg. A fixed end of the single-pole double-throw switch is electrically connected to the ground terminal.
  • a first contact end of the single-pole double-throw switch is electrically connected to the first sub-antenna, and a second contact end of the single-pole double-throw switch is electrically connected to the second sub-antenna.
  • the communications terminal includes only one feed terminal and one ground terminal, and therefore a quantity of pads can be reduced.
  • the communications terminal provided in this embodiment of the present invention may be applicable to different holding manners of the left hand and the right hand, or may be applicable to different head approach postures. This ensures that impact on the communications terminal is similar when the communications terminal is approached by a left side of a head or by the left hand and when the terminal is approached by a right side of the head or by the right hand, and further ensures similar performance gains of the communications terminal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)
  • Telephone Set Structure (AREA)
  • Transceivers (AREA)
  • Telephone Function (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Claims (4)

  1. Terminal de communications, comprenant :
    une borne d'alimentation (10), une borne de masse (11), une antenne (12) et un commutateur unipolaire à double orientation (13), dans lequel l'antenne comprend une partie en forme de T inversé (30), une première sous-antenne (31) et une seconde sous-antenne (32), et la partie en forme de T inversé (30) comprend une barre horizontale et une jambe verticale ;
    la borne d'alimentation (10) est connectée électriquement à un circuit d'alimentation du terminal de communications, et la borne de masse (11) est connectée électriquement à une extrémité de masse du terminal de communications ;
    la jambe verticale de la partie en forme de T inversé (30) est connectée électriquement à la borne d'alimentation (10) ;
    une extrémité fixe du commutateur unipolaire à double orientation (13) est connectée électriquement à la borne de masse (11) ; une première extrémité de contact (130) du commutateur unipolaire à double orientation est connectée électriquement à la première sous-antenne (31), et une seconde extrémité de contact (131) du commutateur unipolaire à double orientation (13) est connectée électriquement à la seconde sous-antenne (32), caractérisé en ce que la première sous-antenne (31) et la seconde sous-antenne (32) sont disposées respectivement sur deux côtés de la jambe verticale de sorte que la première sous-antenne (31) et la seconde sous-antenne (32) sont disposées de manière opposée par rapport à la jambe verticale.
  2. Terminal de communications selon la revendication 1, dans lequel l'antenne (12) comprend en outre une première inductance (34) ; et
    la première inductance (34) est disposée entre la première sous-antenne (31) et la première extrémité de contact (130).
  3. Terminal de communications selon la revendication 1 ou 2, dans lequel l'antenne comprend en outre une seconde inductance (35) ; et
    la seconde inductance (35) est disposée entre la seconde sous-antenne (32) et la seconde extrémité de contact (131).
  4. Terminal de communications selon l'une quelconque des revendications 1 à 3, dans lequel le terminal de communications comprend en outre un capteur (23) et un dispositif de contrôle (24) ;
    le capteur (23) est configuré pour détecter un état gauche et un état droit ; et
    le dispositif de contrôle (24) est connecté séparément au capteur (23) et au commutateur unipolaire à double orientation (13) et est configuré pour commander, en fonction du résultat de la détection du capteur (23), le commutateur unipolaire à double orientation (13) pour passer à un mode de connexion qui correspond au résultat de la détection.
EP14902918.3A 2014-09-30 2014-09-30 Terminal de communication Active EP3190661B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/087943 WO2016049851A1 (fr) 2014-09-30 2014-09-30 Terminal de communication

Publications (3)

Publication Number Publication Date
EP3190661A1 EP3190661A1 (fr) 2017-07-12
EP3190661A4 EP3190661A4 (fr) 2017-08-23
EP3190661B1 true EP3190661B1 (fr) 2019-06-05

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EP14902918.3A Active EP3190661B1 (fr) 2014-09-30 2014-09-30 Terminal de communication

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CN (1) CN105940551B (fr)
WO (1) WO2016049851A1 (fr)

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CN106654572A (zh) * 2016-11-16 2017-05-10 深圳天珑无线科技有限公司 一种降低天线损耗的方法、系统以及天线装置和移动终端
CN106654571A (zh) * 2016-11-17 2017-05-10 深圳天珑无线科技有限公司 一种降低天线损耗的方法和系统以及天线装置和移动终端

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JP2008278219A (ja) * 2007-04-27 2008-11-13 Toshiba Corp アンテナ装置
US9160074B2 (en) * 2008-03-05 2015-10-13 Ethertronics, Inc. Modal antenna with correlation management for diversity applications
JP5422587B2 (ja) * 2011-03-03 2014-02-19 株式会社東芝 アンテナ装置
CN103636061B (zh) * 2011-07-06 2015-12-09 诺基亚公司 用于无线通信的具有天线的装置以及方法
CN102437418B (zh) * 2011-08-24 2013-08-21 清华大学 用于移动终端的宽带平面型可重构天线系统
US9160058B2 (en) * 2011-11-28 2015-10-13 Htc Corporation Portable communication device
US9397399B2 (en) * 2012-04-20 2016-07-19 Ethertronics, Inc. Loop antenna with switchable feeding and grounding points
CN102820540B (zh) * 2012-07-31 2014-06-04 电子科技大学 一种光控方向图可重构微带天线
CN103633451B (zh) * 2012-08-27 2015-12-02 华为终端有限公司 双馈点天线系统及其馈点切换的方法
CN202977704U (zh) * 2012-11-01 2013-06-05 耀登科技股份有限公司 抗金属边框手机的天线结构
CN103715505A (zh) * 2013-12-19 2014-04-09 北京航天科工世纪卫星科技有限公司 半自动便携卫星通信天线
CN103985956B (zh) * 2014-04-29 2016-04-13 中国计量学院 一种环t形多频手机天线
CN104022339A (zh) * 2014-06-13 2014-09-03 哈尔滨工程大学 一种绿色混合可重构手机天线

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Also Published As

Publication number Publication date
CN105940551B (zh) 2020-04-03
CN105940551A (zh) 2016-09-14
EP3190661A1 (fr) 2017-07-12
WO2016049851A1 (fr) 2016-04-07
EP3190661A4 (fr) 2017-08-23

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