WO2021143419A1 - 天线结构及具有该天线结构的电子设备 - Google Patents
天线结构及具有该天线结构的电子设备 Download PDFInfo
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- WO2021143419A1 WO2021143419A1 PCT/CN2020/135927 CN2020135927W WO2021143419A1 WO 2021143419 A1 WO2021143419 A1 WO 2021143419A1 CN 2020135927 W CN2020135927 W CN 2020135927W WO 2021143419 A1 WO2021143419 A1 WO 2021143419A1
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- antenna structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- 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
-
- 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
- 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
- H01Q1/245—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 means for shaping the antenna pattern, e.g. in order to protect user against rf exposure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
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- 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
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- 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
- H01Q5/328—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 between a radiating element and ground
-
- 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
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- 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
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- 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
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
Definitions
- the invention relates to an antenna structure and an electronic device with the antenna structure.
- metal is increasingly applied to the industrial design (ID) of electronic devices, such as metal frames.
- ID industrial design
- designing the metal frame as an antenna has become an antenna design direction.
- the longitudinal component of the side is mainly used, for example, the inverted-F antenna (IFA) mode of the side is used to excite the longitudinal mode of the antenna to achieve low frequency (LB) performance.
- IFA inverted-F antenna
- LB low frequency
- the present application provides an antenna structure of an electronic device.
- the antenna structure includes a frame, a first feeding portion, and a first connecting portion.
- the frame is at least partially made of a metal material, and the frame is at least It includes a first part and a second part, the second part is connected to one end of the first part, the length of the second part is greater than the length of the first part, the first part is provided with a first gap, the The second part is provided with a second gap, the frame between the first gap and the second gap forms a first radiating part, and the first feeding part is disposed on the first radiating part , And located in the first part of the frame, the first feeding portion is electrically connected to a first feeding point to feed a current signal to the first radiating portion, and the first connecting portion is disposed on the first A radiating part is located on the second part of the frame.
- the antenna structure provided in the first aspect adopts low-frequency (LB) bottom feed, which is different from the IFA mode. It has the characteristics of miniaturization and mainly lateral components, so it is less affected by the side curved screen . Furthermore, with the side slits, it can assist in increasing the longitudinal component of the sides, thereby realizing the improvement of the efficiency of the low frequency (LB) FS.
- LB low-frequency
- the antenna structure further includes a first tuning unit, one end of the first tuning unit is electrically connected to the first feeding part, and the other end is grounded, the first tuning unit It includes a first tuning branch, a second tuning branch, and at least one first switch unit.
- the first tuning branch includes a capacitor or an inductor
- the second tuning branch includes a capacitor or an inductor.
- the first tuning unit is used to perform port matching tuning and frequency adjustment on the first radiating part.
- the antenna structure further includes a second tuning unit, one end of the second tuning unit is electrically connected to the first connection part, the other end is grounded, and the second tuning unit It includes a third tuning branch, a fourth tuning branch and at least one second switch unit, the third tuning branch includes a capacitor or an inductor, and the fourth tuning branch includes a capacitor or an inductor.
- the first connecting portion fine-tunes the frequency and longitudinal component of the first radiating portion through the second tuning unit.
- the first part is further provided with a third gap, the third gap is spaced apart from the first gap, and the first gap is larger than the third gap.
- the frame between the first slot and the third slot constitutes a parasitic stub of the first radiating part, so that the antenna structure generates an additional resonance.
- the additional resonance is moved to the effective frequency band of the first radiating part, and the radiation efficiency of the first radiating part is improved.
- the frame body further includes a third part, the third part is disposed opposite to the second part, and is connected to the other end of the first part, the first part A third gap is also opened on the upper part, the third gap is spaced apart from the first gap, and the first gap is closer to the second gap than the third gap, and the third part is provided with Grounding point, the frame between the grounding point and the third slot forms a second radiating portion, the antenna structure further includes a second feeding portion, the second feeding portion is disposed on the second radiating portion And located in the first part of the frame, the second feeding part is electrically connected to a second feeding point, so as to feed a current signal to the second radiating part.
- the frame between the first gap and the first connecting portion constitutes a parasitic branch of the second radiating part, and the parasitic branch of the second radiating part is used for Disperse the current distribution of the second radiation part. In this way, the electromagnetic wave absorption ratio of the second radiation portion can be effectively reduced.
- the antenna structure further includes a second connecting portion disposed on the first radiating portion and located in the second part of the frame, so The distance from the second connecting portion to the second gap is greater than the distance from the first connecting portion to the second gap, and the second connecting portion is grounded through the second tuning unit.
- the parasitic branch of the second radiating part is frequency-tuned by the first tuning unit, the first tuning unit, and the second tuning unit.
- the antenna structure further includes a third connecting portion and a third tuning unit, and the third connecting portion is disposed on the second radiating portion and located at the bottom of the frame.
- the third connecting part is closer to the third part than the second feeding part, one end of the third tuning unit is electrically connected to the third connecting part and the second feeding part, and the other One end is grounded
- the third tuning unit includes a fifth tuning branch, a sixth tuning branch and at least one third switch unit
- the fifth tuning branch includes a capacitor or an inductor
- the sixth tuning branch includes a capacitor Or inductance.
- the third tuning unit is used to perform frequency tuning on the second radiation part.
- the frame is the metal frame of the electronic device, that is, the antenna structure is a metal frame antenna, and the first part is the bottom metal frame of the electronic device.
- the second part is a side metal frame of the electronic device.
- the antenna structure is not limited to a metal frame antenna, and may also be other antenna forms such as an in-mold decoration antenna (MDA).
- MDA in-mold decoration antenna
- the antenna structure when it is an MDA antenna, it uses metal parts in the housing of the electronic device as a radiator to realize the radiation function.
- the casing of the electronic device is made of materials such as plastic, and the metal part is integrated with the casing by in-mold injection molding.
- the present application also provides an electronic device, including the antenna structure provided in the above-mentioned first aspect.
- the electronic device further includes a backplane and a display unit, the backplane is disposed on the edge of the frame, and the display unit is disposed on the frame away from the back One side of the board.
- the back plate is made of metal or other conductive materials.
- the backplane can also be made of insulating materials, such as glass, plastic, and other materials. That is, the antenna structure can be applied to electronic devices with different material backplanes. In addition, the antenna structure can be adapted to electronic devices with large screens such as curved screens and thinner (narrower) side metal frames.
- the present application also provides an electronic device, the electronic device includes an antenna structure, the antenna structure includes a frame, the frame is at least partially made of a metal material, the frame includes at least a first part, The second part and the third part, the second part and the third part are arranged oppositely and connected to both ends of the first part, and the lengths of the second part and the third part are both greater than the length of the The length of the first part, the frame is provided with a first slit, a second slit, and a third slit, the first slit and the third slit are opened on the first part at intervals, and the second slit is opened On the second part, and the first slit is closer to the second slit than the third slit, and the frame between the first slit and the second slit forms a first radiating portion ,
- the third part is provided with a grounding point, the frame between the grounding point and the third gap forms a second radiating part, the first radiating part is provided
- the antenna structure further includes a first tuning unit, one end of the first tuning unit is electrically connected to the first feeding part, and the other end is grounded, the first tuning unit It includes a first tuning branch, a second tuning branch, and at least one first switch unit.
- the first tuning branch includes a capacitor or an inductor
- the second tuning branch includes a capacitor or an inductor.
- the first tuning unit is used to perform port matching tuning and frequency adjustment on the first radiating part.
- the antenna structure further includes a first connecting portion, a second connecting portion, and a second tuning unit, and the first connecting portion and the second connecting portion are spaced apart from each other.
- the second tuning unit includes a third tuning branch, a fourth tuning branch, and at least one second In the switch unit, the third tuning branch includes a capacitor or an inductor, and the fourth tuning branch includes a capacitor or an inductor.
- the frame between the first slot and the third slot constitutes a parasitic stub of the first radiating part, so that the antenna structure generates an additional resonance.
- the additional resonance is moved to the effective frequency band of the first radiating part, and the radiation efficiency of the first radiating part is improved.
- the frame between the first gap and the first connecting portion constitutes a parasitic branch of the second radiating part, and the parasitic branch of the second radiating part is used for Disperse the current distribution of the second radiation part.
- the parasitic stub of the second radiating part is frequency-tuned by the first tuning unit, the first tuning unit, and the second tuning unit.
- the antenna structure further includes a third connecting portion and a third tuning unit, and the third connecting portion is disposed on the second radiating portion and located at the bottom of the frame.
- the third radiating part is closer to the third part than the second feeding part
- one end of the third tuning unit is electrically connected to the third connecting part and the second feeding part, and the other One end is grounded
- the third tuning unit includes a fifth tuning branch, a sixth tuning branch and at least one third switch unit
- the fifth tuning branch includes a capacitor or an inductor
- the sixth tuning branch includes a capacitor Or inductance.
- the third tuning unit is used to perform frequency tuning on the second radiation part.
- the frame is the metal frame of the electronic device, that is, the antenna structure is a metal frame antenna, and the first part is the bottom metal frame of the electronic device.
- the second part and the third part are side metal frames of the electronic device.
- the antenna structure is not limited to a metal frame antenna, and may also be other antenna forms such as an in-mold decoration antenna (MDA).
- MDA in-mold decoration antenna
- the antenna structure when it is an MDA antenna, it uses metal parts in the housing of the electronic device as a radiator to realize the radiation function.
- the casing of the electronic device is made of materials such as plastic, and the metal part is integrated with the casing by in-mold injection molding.
- the antenna structure provided by the third aspect can simultaneously achieve both low SAR and low frequency (LB) radiation performance of medium and high frequency (MHB). That is to say, by designing the slot position and slot width of the antenna, the position of the frame and the coupling current strength of the slot are adjusted, thereby affecting the concentration and dispersion of the current distribution on the antenna frame.
- the antenna structure provided by the third aspect is achieved by increasing the current distribution area of the medium and high frequency (MHB) (for example, adjusting the electrical length of the second radiating part), and at the same time cooperating with the parasitic frame of the medium and high frequency (MHB) to disperse the current.
- MHB medium and high frequency
- the low-frequency (LB) bottom feed is used, which is different from the IFA mode. It has the characteristics of miniaturization and mainly lateral components, so it is affected by the side curved screen. The impact is small. Moreover, with the side slits, it can help increase the longitudinal component of the side. In addition, with the joint adjustment of the switch, the efficiency of the low frequency (LB) FS can be improved, and the parasitic resonance adjustment of the medium and high frequency (MHB) can be taken into account. Guarantee the performance and low SAR characteristics of the medium and high frequency (MHB), and do not need to reduce the power to control the SAR.
- LB low-frequency
- FIG. 1 is a schematic diagram of an antenna structure of a preferred embodiment of the present invention applied to an electronic device.
- FIG. 2 is a schematic diagram of the electronic device shown in FIG. 1 from another angle.
- Fig. 3 is a circuit diagram of the antenna structure shown in Fig. 1.
- 4A to 4C are schematic diagrams of three existing antenna design schemes.
- FIGS 5A to 5C are schematic diagrams of three different MHB design schemes.
- FIG. 6 is a schematic diagram of the structure of the switch unit shown in FIG. 3.
- Fig. 7 is a graph of S parameter (scattering parameter) and radiation efficiency when the antenna structure shown in Fig. 1 works in a low-frequency mode.
- Fig. 8 is a graph of S parameters (scattering parameters) and system efficiency when the antenna structure shown in Fig. 1 works in the LTE B5 frequency band.
- FIG. 9 is a schematic diagram of the current of resonance 1 when the antenna structure shown in FIG. 8 works in the LTE B5 frequency band.
- FIG. 10 is a schematic diagram of the current of resonance 2 when the antenna structure shown in FIG. 8 works in the LTE B5 frequency band.
- FIG. 11 is a graph of S parameters (scattering parameters) of the antenna structure when different on-resistances (Ron) are connected to the first connecting portion shown in FIG. 3.
- FIG. 12 is a graph showing the radiation efficiency of the antenna structure when different on-resistances (Ron) are connected to the first connecting portion shown in FIG. 3.
- FIG. 13 is a graph of S parameters (scattering parameters) of the antenna structure when different on-resistances (Ron) are connected to the second connecting portion shown in FIG. 3.
- FIG. 14 is a graph of radiation efficiency of the antenna structure when different on-resistances (Ron) are connected to the second connecting portion shown in FIG. 3.
- FIG. 15 is a graph of S parameters (scattering parameters) and radiation efficiency when the antenna structure shown in FIG. 1 operates in the LTE B28 frequency band when the second slot is opened on the side and the second slot is not opened.
- FIG. 16 is a graph of S parameters (scattering parameters) and radiation efficiency when the antenna structure shown in FIG. 1 operates in the LTE B5 frequency band when the second slot is opened on the side and the second slot is not opened.
- FIG. 17 is a graph of S parameters (scattering parameters) and radiation efficiency when the antenna structure shown in FIG. 1 operates in the LTE B8 frequency band when the second slot is opened on the side and the second slot is not opened.
- Fig. 18 is a graph of S parameters (scattering parameters) and radiation efficiency when the frame between the first slot and the third slot in the antenna structure shown in Fig. 3 is used as a parasitic stub, and the antenna structure works in the LTE B28 frequency band .
- Antenna structure 100 case 11 frame 111 Backplane 112 first part 115 the second part 116 the third part 117 First gap 120
- Third tuning unit SW3 switch 61, 62, 63 Tuning branch L1, L2, L3 Electronic equipment 200 Display unit 201 First feed point 202 Second feed point 203 First electronic component twenty one Second electronic component twenty two Third electronic component twenty three
- an element when referred to as being “electrically connected” to another element, it can be directly on the other element or a central element may also be present.
- an element when it is considered to be “electrically connected” to another element, it can be a contact connection, for example, it can be a wire connection, or it can be a non-contact connection, for example, it can be a non-contact coupling.
- a preferred embodiment of the present invention provides an antenna structure 100 (refer to FIG. 3), which can be applied to electronic devices 200 such as mobile phones, tablet computers, and personal digital assistants (PDAs). It is used to transmit and receive radio waves to transmit and exchange wireless signals.
- electronic devices 200 such as mobile phones, tablet computers, and personal digital assistants (PDAs). It is used to transmit and receive radio waves to transmit and exchange wireless signals.
- PDAs personal digital assistants
- the electronic device 200 may adopt one or more of the following communication technologies: Bluetooth (BT) communication technology, global positioning system (GPS) communication technology, wireless fidelity (wireless fidelity, Wi-Fi) communication technology. Fi) communication technology, global system for mobile communications (GSM) communication technology, wideband code division multiple access (WCDMA) communication technology, long term evolution (LTE) communication technology, 5G communication technology, SUB-6G communication technology and other future communication technologies, etc.
- Bluetooth Bluetooth
- GPS global positioning system
- Wi-Fi wireless fidelity
- Fi wireless fidelity
- GSM global system for mobile communications
- WCDMA wideband code division multiple access
- LTE long term evolution
- 5G communication technology 5G communication technology
- SUB-6G communication technology SUB-6G communication technology and other future communication technologies, etc.
- the electronic device 200 includes a housing 11 and a display unit 201.
- the housing 11 at least includes a frame 111 and a back plate 112.
- the frame 111 has a substantially ring-shaped structure, which is made of metal or other conductive materials.
- the back plate 112 is disposed on the edge of the frame 111.
- the back plate 112 may be made of metal or other conductive materials.
- the back plate 112 may also be made of insulating materials, such as glass, plastic, and other materials.
- an opening (not labeled in the figure) is provided on the side of the frame 111 opposite to the back plate 112 for accommodating the display unit 201.
- the display unit 201 has a display plane, and the display plane is exposed at the opening.
- the display unit 201 can be combined with a touch sensor to form a touch screen.
- the touch sensor can also be called a touch panel or a touch-sensitive panel.
- the antenna structure 100 at least includes a frame, a first feeding portion 12, a second feeding portion 13, a first connecting portion 15, a second connecting portion 17, and a third connecting portion 18.
- the frame body is at least partially made of metal material.
- the frame body is the frame 111 of the electronic device 200.
- the frame 111 at least includes a first part 115, a second part 116 and a third part 117.
- the first part 115 is the bottom end of the electronic device 200, that is, the first part 115 is the bottom metal frame of the electronic device 200, and the antenna structure 100 constitutes the bottom of the electronic device 200. Lower the antenna.
- the second part 116 and the third part 117 are disposed opposite to each other, and the two are respectively disposed at two ends of the first part 115, preferably vertically.
- the length of the second part 116 or the third part 117 is greater than the length of the first part 115. That is, the second part 116 and the third part 117 are both side metal frames of the electronic device 200.
- At least one gap is also opened on the frame 111.
- the frame 111 is provided with three slits, namely the first slit 120, the second slit 121 and the third slit 122.
- the first slit 120 and the third slit 122 are opened on the first portion 115 at intervals.
- the second gap 121 is disposed on the second portion 116.
- the first slot 120 is located closer to the second portion 116 than the third slot 122
- the third slot 122 is located closer to the third portion 117 relative to the first slot 120.
- the antenna structure 100 further includes a ground point 19.
- the ground point 19 is arranged on the third part 117.
- the first gap 120, the second gap 121, and the third gap 122 all penetrate and partition the frame 111.
- the at least one gap and the ground point 19 jointly divide at least two radiating parts from the frame 111.
- the first slot 120, the second slot 121, the third slot 122, and the ground point 19 jointly divide the first radiating portion F1 and the second radiating portion from the frame 111.
- Department F2. wherein, in this embodiment, the frame 111 between the first gap 120 and the second gap 121 forms the first radiating portion F1.
- the frame 111 between the third gap 122 and the ground point 19 forms the second radiating portion F2.
- the first radiation part F1 is disposed at the lower right corner of the electronic device 200, that is, it is composed of a part of the first part 115 and a part of the second part 116.
- the second radiating part F2 is disposed at the lower left corner of the electronic device 200, that is, it is composed of a part of the first part 115 and a part of the third part 117.
- the electrical length of the first radiating portion F1 is greater than the electrical length of the second radiating portion F2.
- the first gap 120, the second gap 121, and the third gap 122 are all filled with insulating materials, such as plastic, rubber, glass, wood, ceramics, etc., but not This is limited.
- the widths of the first slit 120, the second slit 121, and the third slit 122 are all small, and may be set to be 0.5 millimeters (mm) to 2 mm, for example.
- the widths of the first slit 120, the second slit 121, and the third slit 122 can all be set to 0.8 mm, 1 mm or 1.2 mm.
- the first feeding portion 12 is located in the housing 11.
- the first feeding part 12 is disposed on the first radiating part F1 and located in the first part 115.
- the first feeding part 12 can be electrically connected to a first feeding point 202 by means of elastic sheets, microstrip lines, strip lines, coaxial cables, etc., so as to feed current signals to the first radiating part F1.
- the second feeding portion 13 is disposed in the housing 11.
- the second feeding part 13 is disposed on the second radiating part F2 and located in the first part 115.
- the second feeding part 13 can be electrically connected to a second feeding point 203 by means of elastic sheets, microstrip lines, strip lines, coaxial cables, etc., to feed current signals to the second radiating part F2.
- the first feeding portion 12 and the second feeding portion 13 can be made of iron, metal copper foil, conductors in the laser direct structuring (LDS) process, and other materials. .
- the first connecting portion 15 is disposed on the first radiating portion F1 and located in the second portion 116.
- the second connecting portion 17 is disposed on the first radiating portion F1 and located at the second portion 116. That is, in this embodiment, the first connecting portion 15 and the second connecting portion 17 are spaced apart from the second portion 116, and the distance between the first connecting portion 15 and the second gap 121 is It is smaller than the distance between the second connecting portion 17 and the second gap 121. In other words, the first connecting portion 15 is closer to the second gap 121 than the second connecting portion 17 is.
- the third connecting portion 18 is provided in the housing 11.
- the third connecting portion 18 is disposed on the second radiating portion F2 and is located in the first portion 115.
- the third connecting portion 18 is closer to the third portion 117 than the second feeding portion 13.
- the electrical length L of the first radiating portion F1 (refer to FIG. 3) is adjusted so that the electrical length L is about half of the wavelength corresponding to its resonance frequency.
- the first radiating portion F1 can adopt a half-wave mode to generate resonance.
- the radiation pattern of the antenna structure 100 is a longitudinal pattern.
- the first radiating part F1 may also adopt a composite right/left handed (CRLH) mode to generate resonance.
- the radiation pattern of the antenna structure 100 is a transverse pattern.
- the first radiating part F1 can adopt the CRLH mode and the half-wave mode at the same time, and then excite a first working mode to generate a radiation signal in the first radiation frequency band.
- the first working mode is a low-band (LB) mode.
- the frequency of the first radiation frequency band includes, but is not limited to, LTE B28/B5/B8 and other frequency bands.
- the above longitudinal mode may refer to a radiation mode in which the longitudinal side metal frame (for example, the second part 116) is used as the main radiator to radiate outward.
- the lateral mode may refer to a radiation pattern in which the lateral bottom metal frame (for example, the first part 115) is used as the main radiator to radiate outward.
- the CRLH mode is the main resonant mode, which is different from the inverted F antenna (IFA) mode in that it has miniaturization and uses the lateral component as the main resonance mode.
- the main characteristic so it is less affected by the side radiator or curved screen.
- the antenna structure 100 can assist in increasing the longitudinal component of the side radiator by opening a slit on its side, such as the second portion 116 (ie, the second slit 121), thereby ensuring that the antenna structure 100 Has good LB radiation performance.
- the antenna structure 100 can adopt the CRLH mode and the parasitic mode, and then excite a second working mode to generate a radiation signal in the second radiation frequency band.
- the second working mode is a middle/high band (MHB) mode.
- the frequency of the second radiation frequency band includes, but is not limited to, LTE B1/B3/B4/B7/B38/B39/B40/B41, WCDMA B1/B2, GSM 1800/1900 and other frequency bands.
- the electromagnetic wave absorption rate (Specific Absorption Rate, SAR) is an important indicator of mobile phones, and it is also a content that antenna engineers pay special attention to when designing antennas.
- SAR Specific Absorption Rate
- TRP total radiated power
- the SAR is controlled by reducing the radiated power of the mobile phone under normal circumstances.
- FIG. 4A, FIG. 4B, and FIG. 4C are schematic diagrams of three existing antenna solutions.
- the second radiating part F2 adopts two resonance modes, namely, the CRLH mode and the parasitic mode.
- the CRLH mode is located on one side of the second feeding part 13.
- the parasitic mode of the second radiating part F2 is made to cross the first gap 120 at the same time.
- the third slot 122, and make the frame 111 between the first slot 120 and the first connecting portion 15 constitute a parasitic stub, so as to achieve the purpose of dispersing current distribution, so that the antenna structure 100 can work at medium and high frequencies. It also has the characteristics of lower SAR without reducing its radiation power.
- area 1 constitutes the MHB area of the antenna structure 100. That is, the second radiating portion F2 is mainly in the CRLH mode, and its parasitic mode crosses the first gap 120 and the third gap 122, so that the first gap 120 and the first connecting portion 15 are
- the frame 111 constitutes a parasitic branch.
- the area 2 in the figure constitutes the LB area of the antenna structure 100.
- Fig. 5A, Fig. 5B and Fig. 5C are schematic diagrams of three different MHB design schemes.
- Fig. 5A adopts the long left hand and far parasitic mode
- Fig. 5B adopts the short left hand and far parasitic mode
- Fig. 5C adopts the short left hand and near parasitic mode.
- the long left hand and the short left hand mean that the electrical length of the second radiating portion F2 in FIG. 5A is greater than the electrical length of the second radiating portion F2 in FIG. 5B and FIG. 5C.
- Far parasitic and near parasitic respectively refer to the parasitic branches farther from the second radiating part F2 (for example, the frame 111 between the first gap 120 and the first connecting part 15, see FIGS. 5A and 5B) and distance Parasitic branch nodes near the second radiating portion F2 (for example, the frame 111 between the first gap 120 and the third gap 122, refer to FIG. 5C).
- H field the tangential component of the magnetic field
- the antenna structure 100 further includes a first tuning unit SW1, a second tuning unit SW2, and a third tuning unit SW3.
- One end of the first tuning unit SW1 is electrically connected to the first feeding part 12, and the other end is grounded.
- the first tuning unit SW1 is used to perform port matching tuning and frequency adjustment on the first radiating part F1.
- One end of the second tuning unit SW2 is electrically connected to the first connecting portion 15 and the second connecting portion 17. The other end of the second tuning unit SW2 is grounded.
- the second tuning unit SW2 constitutes a multiplexing switch, that is, the first connecting portion 15 and the second connecting portion 17 share the second tuning unit SW2.
- the first connecting portion 15 can be switched to a different tuning branch through the second tuning unit SW2, so as to realize the adjustment of frequency and longitudinal component.
- the first connecting portion 15 can be switched or adjusted to zero ohmic resistance or 1 nanohenry (nH)/2nH inductance through the second tuning unit SW2, thereby fine-tuning the frequency and longitudinal direction of the first radiating portion F1 Weight.
- the second connecting part 17 adjusts the parasitic resonance frequency of the second radiating part F2 through the second tuning unit SW2.
- the third tuning unit SW3 is electrically connected to the second feeding portion 13 and the third connection portion 18, and the other end is grounded.
- the third tuning unit SW3 is used for frequency tuning the CRLH mode of the second radiation part F2.
- the second radiating part F2 can perform frequency tuning of its spurious mode through the first tuning unit SW1.
- the second radiating part F2 can also perform auxiliary tuning of its parasitic mode through the second tuning unit SW2 on the basis of the first tuning unit SW1.
- the CRLH mode of the second radiating part F2 is mainly tuned by the third tuning unit SW3.
- the parasitic mode of the second radiating part F2 is tuned by the first tuning unit SW1, the first tuning unit SW1, and the second tuning unit SW2.
- the tuning unit may include at least one switch unit, such as three SPST switches, namely a switch 61, a switch 62, and a switch 63. One end of each switch unit is grounded, and the other end can be connected to the corresponding tuning branch.
- the switch 61 is connected to the tuning branch L1
- the switch 62 is connected to the tuning branch L2
- the switch 63 is connected to the tuning branch L3.
- the tuning branches L1, L2, and L3 may all include capacitors or inductors. The tuning unit can selectively turn on different tuning branches to achieve frequency adjustment.
- the tuning unit such as the first tuning unit SW1, the second tuning unit SW2, and the third tuning unit SW3, may also include other types of switch units, which are not limited to the aforementioned SPST switches.
- the antenna structure 100 cooperates with the joint tuning of the tuning unit, such as the first tuning unit SW1, the second tuning unit SW2, and the third tuning unit SW3, to achieve a low-frequency modal free space (free space). space, FS) efficiency improvement.
- the parasitic resonance adjustment of the middle and high frequency modes can be taken into account, thereby ensuring the performance and low SAR characteristics of the middle and high frequency modes.
- the FS efficiency refers to the efficiency of the antenna structure 100 in the low frequency mode when the electronic device 200 is not held by the user.
- FIG. 7 is a graph of S parameters (scattering parameters) and radiation efficiency when the antenna structure 100 works in a low frequency mode.
- the curve S41 is the S11 value when the antenna structure 100 works in the LTE B28 frequency band.
- the curve S42 is the S11 value when the antenna structure 100 works in the LTE B5 frequency band.
- the curve S43 is the S11 value when the antenna structure 100 works in the LTE B8 frequency band.
- the curve S44 is the radiation efficiency when the antenna structure 100 works in the LTE B28 frequency band.
- the curve S45 is the radiation efficiency when the antenna structure 100 works in the LTE B5 frequency band.
- the curve S46 is the radiation efficiency when the antenna structure 100 works in the LTE B8 frequency band.
- the curve S47 is the system efficiency when the antenna structure 100 works in the LTE B28 frequency band.
- the curve S48 is the system efficiency when the antenna structure 100 works in the LTE B5 frequency band.
- the curve S49 is the system efficiency when the antenna structure 100 works in the LTE B8 frequency band.
- FIG. 8 is a graph of S parameters (scattering parameters) and system efficiency when the antenna structure 100 operates in the LTE B5 frequency band.
- the curve S51 is the S11 value when the antenna structure 100 works in the LTE B5 frequency band.
- the curve S52 is the system efficiency when the antenna structure 100 works in the LTE B5 frequency band.
- FIG. 9 is a schematic diagram of the current of resonance 1 when the antenna structure 100 operates in the LTE B5 frequency band.
- FIG. 10 is a schematic diagram of the current of resonance 2 when the antenna structure 100 operates in the LTE B5 frequency band.
- the resonance 1 is mainly in the CRLH mode, that is, mainly in the transverse mode radiation.
- the position where its side is connected to the ground that is, the position of the first connecting portion 15 and the second connecting portion 17, the frame (ie, the first radiating portion F1) will be in the antenna high current area, that is, a maximum current density Jmax is formed.
- the parasitic resistance including the second tuning unit SW2 will have a greater impact on the low frequency efficiency of the antenna structure 100. It can be seen from FIGS. 8 and 10 that when the first radiating part F1 works at resonance 2, resonance 2 is dominated by half-wave mode, that is, dominated by longitudinal mode radiation. At the same time, the current is fed in from the first feeding part 12, flows through the first radiating part F1, and then radiates out through the first slit 120 and the second slit 121 at both ends of the first radiating part F1.
- the on-resistance (Ron) generated by the on-resistance (Ron) affects its antenna performance.
- the curve S81 is the S11 value of the antenna structure 100 when the on-resistance (Ron) is 2 ohms.
- the curve S82 is the S11 value of the antenna structure 100 when the on-resistance (Ron) is 1.5 ohms.
- the curve S83 is the S11 value of the antenna structure 100 when the on-resistance (Ron) is 1 ohm.
- the curve S84 is the S11 value of the antenna structure 100 when the on-resistance (Ron) is 0.5 ohm.
- the curve S85 is the S11 value of the antenna structure 100 when the on-resistance (Ron) is zero ohm.
- the curve S91 is the radiation efficiency of the antenna structure 100 when the on-resistance (Ron) is 2 ohms.
- the curve S92 is the radiation efficiency of the antenna structure 100 when the on-resistance (Ron) is 1.5 ohms.
- the curve S93 is the radiation efficiency of the antenna structure 100 when the on-resistance (Ron) is 1 ohm.
- the curve S94 is the radiation efficiency of the antenna structure 100 when the on-resistance (Ron) is 0.5 ohm.
- the curve S95 is the radiation efficiency of the antenna structure 100 when the on-resistance (Ron) is zero ohm.
- the on-resistance (Ron) when the on-resistance (Ron) is 2 ohms, the influence is about 1.6 dB. When the on-resistance (Ron) is 1 ohm, its influence is about 0.9dB. In other words, the on-resistance (Ron) at the first connecting portion 15 has a greater impact on the antenna efficiency. Therefore, in this embodiment, for the low frequency band (LB), the first connecting portion 15 can be designed to be directly grounded, for example, directly grounded through a zero-ohm resistance, without passing through the on-resistance of the second tuning unit SW2. (Ron).
- the on-resistance (Ron) generated therefrom affects the performance of the antenna.
- the curve S101 is the S11 value of the antenna structure 100 when the on-resistance (Ron) is 2 ohms.
- the curve S102 is the S11 value of the antenna structure 100 when the on-resistance (Ron) is 1 ohm.
- the curve S103 is the S11 value of the antenna structure 100 when the on-resistance (Ron) is zero ohm.
- the curve S111 is the radiation efficiency of the antenna structure 100 when the on-resistance (Ron) is 2 ohms.
- the curve S112 is the radiation efficiency of the antenna structure 100 when the on-resistance (Ron) is 1 ohm.
- the curve S113 is the radiation efficiency of the antenna structure 100 when the on-resistance (Ron) is zero ohm.
- a switch with a small on-resistance such as a 4SPST switch, can be selected to reduce the on-resistance at the second connecting portion 17 when the first tuning unit SW1 is used to perform port tuning on the low frequency band.
- Ron The impact on antenna performance.
- the antenna structure 100 works in the LTE B28 frequency band.
- S parameter scattering parameter
- radiation efficiency graph is the S11 value when the antenna structure 100 operates in the LTE B28 frequency band when the second slot 121 is opened.
- the curve S122 is the radiation efficiency when the antenna structure 100 operates in the LTE B28 frequency band when the second slot 121 is opened.
- the curve S123 is the system efficiency when the antenna structure 100 operates in the LTE B28 frequency band when the second slot 121 is opened.
- the curve S124 is the S11 value when the antenna structure 100 operates in the LTE B28 frequency band when the second slot 121 is not opened.
- the curve S125 is the radiation efficiency when the antenna structure 100 works in the LTE B28 frequency band when the second slot 121 is not opened.
- the curve S126 is the system efficiency when the antenna structure 100 works in the LTE B28 frequency band when the second slot 121 is not opened.
- the antenna structure 100 works in the LTE B5 frequency band ( Scattering parameters) and radiation efficiency graphs.
- the curve S131 is the S11 value when the antenna structure 100 operates in the LTE B5 frequency band when the second slot 121 is opened.
- the curve S132 is the radiation efficiency when the antenna structure 100 operates in the LTE B5 frequency band when the second slot 121 is opened.
- the curve S133 is the system efficiency when the antenna structure 100 operates in the LTE B5 frequency band when the second slot 121 is opened.
- the curve S134 is the S11 value when the antenna structure 100 operates in the LTE B5 frequency band when the second slot 121 is not opened.
- the curve S135 is the radiation efficiency when the antenna structure 100 operates in the LTE B5 frequency band when the second slot 121 is not opened.
- the curve S136 is the system efficiency when the antenna structure 100 works in the LTE B5 frequency band when the second slot 121 is not opened.
- the antenna structure 100 works in the LTE B8 frequency band ( Scattering parameters) and radiation efficiency graphs.
- the curve S141 is the S11 value when the antenna structure 100 operates in the LTE B8 frequency band when the second slot 121 is opened.
- the curve S142 is the radiation efficiency when the antenna structure 100 operates in the LTE B8 frequency band when the second slot 121 is opened.
- the curve S143 is the system efficiency when the antenna structure 100 operates in the LTE B8 frequency band when the second slot 121 is opened.
- the curve S144 is the S11 value when the antenna structure 100 operates in the LTE B8 frequency band when the second slot 121 is not opened.
- the curve S145 is the radiation efficiency when the antenna structure 100 operates in the LTE B8 frequency band when the second slot 121 is not opened.
- the curve S146 is the system efficiency when the antenna structure 100 works in the LTE B8 frequency band when the second slot 121 is not opened.
- the electronic device 200 further includes at least one electronic component.
- the electronic device 200 includes at least three electronic components, namely a first electronic component 21, a second electronic component 22 and a third electronic component 23.
- the first electronic component 21, the second electronic component 22 and the third electronic component 23 are all arranged in the housing 11.
- the first electronic component 21 is a Universal Serial Bus (USB) interface module.
- the first electronic component 21 is located between the first gap 120 and the third gap 122.
- the second electronic component 22 is a sound cavity.
- the second electronic component 22 is disposed between the third gap 122 and the third portion 117.
- the third electronic component 23 is a Subscriber Identity Module (SIM) card socket.
- SIM Subscriber Identity Module
- the frame 111 between the first slot 120 and the third slot 122 in the antenna structure 100 may also constitute a parasitic branch F3 in the low-frequency mode.
- the parasitic branch F3 is spaced apart from the first radiating portion F1 and the second radiating portion F2, that is, suspended.
- FIG. 18 is a graph of S parameters (scattering parameters) and radiation efficiency when the antenna structure 100 operates in the LTE B28 frequency band when the parasitic stub F3 is tuned and not tuned.
- the curve S151 is the S11 value when the antenna structure 100 is operating in the LTE B28 frequency band when the parasitic stub F3 is not tuned.
- the curve S152 is the radiation efficiency when the antenna structure 100 works in the LTE B28 frequency band when the parasitic stub F3 is not tuned.
- the curve S153 is the S11 value when the antenna structure 100 works in the LTE B28 frequency band when the parasitic stub F3 is tuned.
- the curve S154 is the radiation efficiency when the antenna structure 100 works in the LTE B28 frequency band when the parasitic stub F3 is tuned.
- the antenna structure 100 can generate an additional resonance 3.
- the resonance 3 can be moved into the effective frequency band of the first radiating part F1, and the radiation efficiency of the LTE B28 frequency band is significantly improved.
- the first tuning unit SW1 can be used to multiplex the first tuning unit SW1 to further tune the parasitic stub F3 of the low frequency mode.
- a corresponding switch unit may be additionally provided to realize the tuning of the parasitic branch F3 of the low frequency mode.
- the second radiating portion F2 is disposed on the side where the second electronic component 22 is located.
- the position of the second radiating portion F2 can be adjusted as required.
- the second radiating portion F2 may be disposed on the side where the third electronic component 23 is located, and the first radiating portion F1 may be disposed on the side of the second electronic component 22. That is, the positions of the first radiating portion F1 and the second radiating portion F2 can be adjusted as required, for example, they can be replaced with each other.
- the antenna structure 100 adopts a low-frequency and medium-high frequency separate feeding manner, that is, the first feeding part 12 and the second feeding part 13 are fed separately, and the first feeding part 12 and the second feeding part 13 are separately fed.
- the full coverage of LB/MB/HB is effectively realized, and at the same time, it is equipped with medium and high frequency (MHB) low SAR Features and better low frequency (LB) radiation performance.
- MHB medium and high frequency
- the frame of the antenna structure 100 is directly constituted by the frame 111 of the electronic device 200, that is, the housing (frame) of the electronic device 200 is made of metal, and the antenna
- the structure 100 is a metal frame antenna.
- the antenna structure 100 is not limited to a metal frame antenna, and may also be other antenna forms such as an in-mold decoration antenna (MDA).
- MDA in-mold decoration antenna
- the antenna structure 100 uses a metal part in the housing of the electronic device 200 as a frame to realize the radiation function.
- the casing of the electronic device 200 is made of insulating materials such as plastic, and the metal parts are integrated with the casing by in-mold injection molding.
- the antenna structure 100 of the present invention can simultaneously achieve both low SAR and low frequency (LB) radiation performance of the medium and high frequency (MHB). That is to say, by designing the slot position and slot width of the antenna, the position of the frame and the coupling current strength of the slot are adjusted, thereby affecting the concentration and dispersion of the current distribution on the antenna frame.
- the antenna structure 100 increases the current distribution area of the medium and high frequency (MHB) CRLH mode (for example, adjusts the electrical length of the second radiating part F2), and at the same time cooperates with the medium and high frequency (MHB) parasitic frame to disperse the current to achieve low The purpose of SAR.
- MHB medium and high frequency
- a low-frequency (LB) bottom feed is adopted, and the main resonance mode is a CRLH mode.
- the CRLH mode is different from the IFA mode in that it has the characteristics of miniaturization and mainly lateral components, so it is less affected by the side curved screen.
- the side slits it can help increase the longitudinal component of the side.
- the efficiency of the low frequency (LB) FS can be improved, and the parasitic resonance adjustment of the medium and high frequency (MHB) can be taken into account. Guarantee the performance and low SAR characteristics of the medium and high frequency (MHB), and do not need to reduce the power to control the SAR.
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Abstract
Description
天线结构 | 100 |
壳体 | 11 |
边框 | 111 |
背板 | 112 |
第一部分 | 115 |
第二部分 | 116 |
第三部分 | 117 |
第一缝隙 | 120 |
第二缝隙 | 121 |
第三缝隙 | 122 |
第一辐射部 | F1 |
第二辐射部 | F2 |
第一馈入部 | 12 |
第二馈入部 | 13 |
第一连接部 | 15 |
第二连接部 | 17 |
第三连接部 | 18 |
接地点 | 19 |
第一调谐单元 | SW1 |
第二调谐单元 | SW2 |
第三调谐单元 | SW3 |
开关 | 61、62、63 |
调谐支路 | L1、L2、L3 |
电子设备 | 200 |
显示单元 | 201 |
第一馈电点 | 202 |
第二馈电点 | 203 |
第一电子元件 | 21 |
第二电子元件 | 22 |
第三电子元件 | 23 |
Claims (20)
- 一种电子设备的天线结构,其特征在于,所述天线结构包括框体、第一馈入部及第一连接部,所述框体至少部分由金属材料制成,所述框体至少包括第一部分及第二部分,所述第二部分连接至所述第一部分的一端,所述第二部分的长度大于所述第一部分的长度,所述第一部分上开设有第一缝隙,所述第二部分上开设有第二缝隙,所述第一缝隙与所述第二缝隙之间的所述框体形成一第一辐射部,所述第一馈入部设置于所述第一辐射部上,且位于所述框体的第一部分,所述第一馈入部电连接至一第一馈电点,以为所述第一辐射部馈入电流信号,所述第一连接部设置于所述第一辐射部上,且位于所述框体的第二部分。
- 如权利要求1所述的天线结构,其特征在于:所述天线结构还包括第一调谐单元,所述第一调谐单元的一端电连接至所述第一馈入部,另一端接地,所述第一调谐单元包括第一调谐支路、第二调谐支路和至少一个第一开关单元,所述第一调谐支路包括电容或者电感,所述第二调谐支路包括电容或者电感。
- 如权利要求1或2所述的天线结构,其特征在于:所述天线结构还包括第二调谐单元,所述第二调谐单元的一端电连接至所述第一连接部,另一端接地,所述第二调谐单元包括第三调谐支路、第四调谐支路和至少一个第二开关单元,所述第三调谐支路包括电容或者电感,所述第四调谐支路包括电容或者电感。
- 如权利要求1-3中任一项所述的天线结构,其特征在于:所述第一部分上还开设有第三缝隙,所述第三缝隙与所述第一缝隙间隔设置,且所述第一缝隙比所述第三缝隙更靠近所述第二缝隙,所述第一缝隙与所述第三缝隙之间的框体构成所述第一辐射部的寄生枝节,使得所述天线结构产生一额外的谐振。
- 如权利要求3所述的天线结构,其特征在于:所述框体还包括第三部分,所述第三部分与所述第二部分相对设置,且连接至所述第一部分的另一端,所述第一部分上还开设有第三缝隙,所述第三缝隙与所述第一缝隙间隔设置,且所述第一缝隙比所述第三缝隙更靠近所述第二缝隙,所述第三部分上设置有接地点,所述接地点与所述第三缝隙之间的框体形成一第二辐射部,所述天线结构还包括第二馈入部,所述第二馈入部设置于所述第二辐射部上,且位于所述框体的第一部分,所述第二馈入部电连接至一第二馈电点,以为所述第二辐射部馈入电流信号。
- 如权利要求5所述的天线结构,其特征在于:所述第一缝隙与所述第一连接部之间的框体构成所述第二辐射部的寄生枝节,所述第二辐射部的寄生枝节用以分散所述第二辐射部的电流分布。
- 如权利要求5或6所述的天线结构,其特征在于:所述天线结构还包括第二连接部,所述第二连接部设置于所述第一辐射部上,且位于所述框体 的第二部分,所述第二连接部至所述第二缝隙的距离大于所述第一连接部至所述第二缝隙的距离,所述第二连接部通过所述第二调谐单元接地。
- 如权利要求5-7中任一项所述的天线结构,其特征在于:所述天线结构还包括第三连接部及第三调谐单元,所述第三连接部设置于所述第二辐射部上,且位于所述框体的第一部分,所述第三连接部比所述第二馈入部更靠近所述第三部分,所述第三调谐单元的一端电连接至所述第三连接部与所述第二馈入部,另一端接地,所述第三调谐单元包括第五调谐支路、第六调谐支路和至少一个第三开关单元,所述第五调谐支路包括电容或者电感,所述第六调谐支路包括电容或者电感。
- 如权利要求1-8中任一项所述的天线结构,其特征在于:所述框体为所述电子设备的金属边框,所述第一部分为所述电子设备的底部金属边框,所述第二部分为所述电子设备的侧边金属边框。
- 如权利要求1-8中任一项所述的天线结构,其特征在于:所述框体设置于所述电子设备的机壳内,且通过模内注塑的方式和所述机壳做成整体。
- 一种电子设备,其特征在于:所述电子设备包括如权利要求1-10中任一项所述的天线结构。
- 如权利要求11所述的电子设备,其特征在于:所述电子设备还包括背板及显示单元,所述背板设置于所述框体的边缘,所述显示单元设置于所述框体远离所述背板的一侧。
- 一种电子设备,其特征在于,所述电子设备包括天线结构,所述天线结构包括框体,所述框体至少部分由金属材料制成,所述框体至少包括第一部分、第二部分及第三部分,所述第二部分与所述第三部分相对设置,且连接至所述第一部分的两端,所述第二部分及所述第三部分的长度均大于所述第一部分的长度,所述框体上开设有第一缝隙、第二缝隙及第三缝隙,所述第一缝隙及所述第三缝隙间隔开设于所述第一部分上,所述第二缝隙开设于所述第二部分上,且所述第一缝隙比所述第三缝隙更靠近所述第二缝隙,所述第一缝隙与所述第二缝隙之间的框体形成一第一辐射部,所述第三部分上设置有接地点,所述接地点与所述第三缝隙之间的框体形成一第二辐射部,所述第一辐射部上设置有第一馈入部,所述第一馈入部位于所述框体的第一部分,以为所述第一辐射部馈入电流信号,所述第二辐射部上设置有第二馈入部,所述第二馈入部位于所述框体的第一部分,以为所述第二辐射部馈入电流信号。
- 如权利要求13所述的电子设备,其特征在于:所述天线结构还包括第一调谐单元,所述第一调谐单元的一端电连接至所述第一馈入部,另一端接地,所述第一调谐单元包括第一调谐支路、第二调谐支路和至少一个第一开关单元,所述第一调谐支路包括电容或者电感,所述第二调谐支路包括电容或者电感。
- 如权利要求13或14所述的电子设备,其特征在于:所述天线结构还包括第一连接部、第二连接部及第二调谐单元,所述第一连接部与所述第 二连接部间隔设置于所述第一辐射部上,且位于所述框体的第二部分,所述第二连接部至所述第二缝隙的距离大于所述第一连接部至所述第二缝隙的距离,所述第二调谐单元的一端分别电连接至所述第一连接部及所述第二连接部,另一端接地,所述第二调谐单元包括第三调谐支路、第四调谐支路和至少一个第二开关单元,所述第三调谐支路包括电容或者电感,所述第四调谐支路包括电容或者电感。
- 如权利要求13-15中任一项所述的电子设备,其特征在于:所述第一缝隙与所述第三缝隙之间的框体构成所述第一辐射部的寄生枝节,以使得所述天线结构产生一额外的谐振。
- 如权利要求15所述的电子设备,其特征在于:所述第一缝隙与所述第一连接部之间的框体构成所述第二辐射部的寄生枝节,所述第二辐射部的寄生枝节用以分散所述第二辐射部的电流分布。
- 如权利要求13所述的电子设备,其特征在于:所述天线结构还包括第三连接部及第三调谐单元,所述第三连接部设置于所述第二辐射部上,且位于所述框体的第一部分,所述第三辐射部比所述第二馈入部更靠近所述第三部分,所述第三调谐单元的一端电连接至所述第三连接部与所述第二馈入部,另一端接地,所述第三调谐单元包括第五调谐支路、第六调谐支路和至少一个第三开关单元,所述第五调谐支路包括电容或者电感,所述第六调谐支路包括电容或者电感。
- 如权利要求13-18中任一项所述的电子设备,其特征在于:所述框体为所述电子设备的金属边框,所述第一部分为所述电子设备的底部金属边框,所述第二部分及所述第三部分为所述电子设备的侧边金属边框。
- 如权利要求13-18中任一项所述的电子设备,其特征在于:所述电子设备还包括机壳,所述框体设置于所述机壳内,且通过模内注塑的方式和所述机壳做成整体。
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BR112022011923A BR112022011923A2 (pt) | 2020-01-17 | 2020-12-11 | Estrutura de antena e dispositivo eletrônico tendo estrutura de antena |
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EP20913264.6A EP4060811A4 (en) | 2020-01-17 | 2020-12-11 | ANTENNA STRUCTURE AND ELECTRONIC DEVICE WITH THE ANTENNA STRUCTURE |
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AU2020422039B2 (en) | 2023-08-17 |
JP2023510827A (ja) | 2023-03-15 |
BR112022011923A2 (pt) | 2022-09-06 |
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