TWI689133B - Antenna structure and wireless communication device with same - Google Patents

Abstract

The present invention provides an antenna structure including a side frame, a first feeding portion, and a second feeding portion. The side frame includes an end portion, a first side portion, and a second side portion. The side frame further defines a first gap, a second gap, a first slot, and a second slot. The first gap, the second gap, the first slot, and the second slot all pass through and cut across the side frame to divide the side frame into two radiating portions. The two radiating portions are located at two comers of the side frame. The first and second feeding portions are respectively connected to a corresponding radiating portion for feeding current.

Description

Antenna structure and wireless communication device with the antenna structure

The invention relates to an antenna structure and a wireless communication device with the antenna structure.

At present, most electronic devices, such as mobile phones and personal digital assistants, have realized full-screen design. However, how to not compress the antenna clearance area under full-screen design conditions is an important issue currently facing antenna design.

In view of this, it is necessary to provide an antenna structure and a wireless communication device having the antenna structure.

An antenna structure includes a frame, a first feed-in portion, and a second feed-in portion. The frame is made of a metal material. The frame includes an end portion, a first side portion, and a second side portion. The second side portion is oppositely arranged, and is connected to both ends of the end portion respectively, and a first break point, a second break point, a first break groove, and a second break groove are also provided on the frame A break point and the second break point are arranged on the end portion at intervals, the first break groove is provided on the first side portion, and the second break groove is provided on the second side portion, so The first break point, the second break point, the first break groove, and the second break groove all penetrate and block the frame, and then two radiating portions are divided from the frame, and two The radiating parts are respectively arranged at two corners of the frame At this point, the first feeding part and the second feeding part are electrically connected to the corresponding radiating parts, respectively, for feeding current to the corresponding radiating parts, respectively.

A wireless communication device includes the antenna structure described above.

The antenna structure of the present invention and the wireless communication device having the antenna structure are provided by arranging the first radiating portion and the second radiating portion at two corners of the frame, and by appropriately adjusting the first radiating portion And the feeding, grounding and switching circuits of the second radiating part can effectively achieve the characteristics of broadband and good antenna efficiency. Furthermore, the antenna structure can be applied in an environment where the antenna space is limited, and while ensuring the screen integrity of the display unit, it can effectively avoid the shielding effect of electronic components on the antenna structure, which is more beautiful and practical.

100, 100a: antenna structure

11: Shell

110: border

111: backplane

113: accommodating space

115: the end

116: First side

117: Second side

120: first breakpoint

121: Second breakpoint

122: The first break slot

23: Second break slot

A1: First Radiation Department

A2: Second Radiation Department

12: First feed-in

13, 13a: Second feed-in section

14: Matching circuit

141: First matching element

142: Second matching element

143: third matching element

144: Fourth matching element

145: Fifth matching element

146: sixth matching element

15, 15a: connecting part

16: Extension

161: The first extension

162: Second extension

163: The third extension

17: switch circuit

171: Toggle switch

172: First switching unit

173: The first switching element

174: Second switching unit

175: Second switching element

200, 200a: wireless communication device

201: display unit

21: substrate

211: Clearance area

212: The first feed source

213: Second feed source

23: Electronic components

FIG. 1 is a partially exploded schematic view of an antenna structure applied to a wireless communication device according to a first preferred embodiment of the present invention.

FIG. 2 is an assembly diagram of the back of the wireless communication device shown in FIG. 1.

FIG. 3 is an assembly diagram of the front side of the wireless communication device shown in FIG. 1.

4 is a circuit diagram of an antenna structure in the wireless communication device shown in FIG.

FIG. 5 is a circuit diagram of a matching circuit in the antenna structure shown in FIG. 4.

6 is a circuit diagram of a switching circuit in the antenna structure shown in FIG.

7 is a graph of S-parameters (scattering parameters) of the first radiating portion in the antenna structure when the electronic component shown in FIG. 4 is in the off state and the switching circuit is switched to the first switching unit.

FIG. 8 is a graph of S-parameters (scattering parameters) of the first radiating portion in the antenna structure when the electronic component shown in FIG. 4 is turned on and the switching circuit is switched to the first switching unit.

FIG. 9 is a graph of S-parameters (scattering parameters) of the first radiating portion in the antenna structure when the electronic component shown in FIG. 4 is turned on and the switching circuit is switched to the second switching unit.

10 is a graph of the total radiation efficiency of the first radiating portion in the antenna structure when the electronic component shown in FIG. 4 is in a closed state.

FIG. 11 is a graph of the total radiation efficiency of the first radiating portion in the antenna structure when the electronic component shown in FIG. 4 is turned on.

FIG. 12 is a graph of the S parameter (scattering parameter) of the second radiating portion in the antenna structure shown in FIG. 4.

13 is a graph of the total radiation efficiency of the second radiating portion in the antenna structure shown in FIG. 4.

14 is a schematic diagram of an antenna structure applied to a wireless communication device according to a second preferred embodiment of the present invention.

The technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person with ordinary knowledge in the art without making creative work fall within the protection scope of the present invention.

It should be noted that when an element is called "electrically connected" to another element, it may be directly on another element or there may be an element in the middle. When an element is considered to be "electrically connected" to another element, it may be a contact connection, for example, a wire connection, or a non-contact connection, for example, a non-contact coupling method.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those with ordinary knowledge in the field. The specification of the present invention The terminology used in this document is for the purpose of describing specific embodiments and is not intended to limit the present invention.

The following is a detailed description of some embodiments of the present invention with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

Please refer to FIG. 1, FIG. 2 and FIG. 3, the first preferred embodiment of the present invention provides an antenna structure 100, which can be applied to wireless communication devices 200 such as mobile phones, personal digital assistants, etc., for transmitting and receiving radio waves to Transmit and exchange wireless signals.

The antenna structure 100 at least includes a housing 11, a first feeding portion 12, a second feeding portion 13, a matching circuit 14, a connecting portion 15 and an extending portion 16.

The casing 11 may be a casing of the wireless communication device 200. The casing 11 includes at least a frame 110 and a back plate 111. The frame 110 has an approximately ring structure, which is made of metal material. An opening (not shown) is provided on one side of the frame 110 for accommodating the display unit 201 of the wireless communication device 200 (see FIG. 3). Understandably, the display unit 201 includes a complete display plane without gaps. The display plane is exposed at the opening.

The back plate 111 is made of metal material. The back plate 111 is disposed at an edge of the frame 110 away from the display unit 201, and is substantially parallel to the display plane of the display unit 201. It can be understood that, in this embodiment, the back plate 111 is also integrally formed with the frame 110, and together forms a receiving space 113. The accommodating space 113 is used for accommodating electronic components or circuit modules such as substrates and processing units of the wireless communication device 200 therein.

The frame 110 at least includes an end portion 115 (see FIG. 3 ), a first side portion 116 and a second side portion 117. In this embodiment, the end portion 115 may be the top of the wireless communication device 200. The first side portion 116 is disposed opposite to the second side portion 117, and the two are respectively disposed at both ends of the end portion 115, preferably vertically. The tip 115, the first side Both 116 and the second side portion 117 are connected to the back plate 111 and the display unit 201. In addition, in this embodiment, the lengths of the first side portion 116 and the second side portion 117 are larger than the length of the end portion 115.

The frame 110 is also provided with a first break point 120, a second break point 121, a first break groove 122 and a second break groove 123. The first breakpoint 120 and the second breakpoint 121 are disposed on the end portion 115 at intervals. Wherein, the first break point 120 is disposed at a position of the end portion 115 close to the first side portion 116. The second breakpoint 121 is disposed at a position of the end portion 115 close to the second side portion 117. The first break groove 122 is disposed on the first side portion 116 and is spaced apart from the first break point 120. The second break groove 123 is disposed on the second side portion 117 and is spaced apart from the second break point 121.

In this embodiment, the first break point 120, the second break point 121, the first break groove 122, and the second break groove 123 all cut off the frame 110. As such, the first break point 120, the second break point 121, the first break groove 122, and the second break groove 123 together separate the corresponding first radiating portion A1 and the first from the frame 110二radiation department A2. Wherein, the frame 110 between the first break point 120 and the first break groove 122 forms the first radiating portion A1. The frame 110 between the second break point 121 and the second break groove 123 forms the second radiating portion A2. That is to say, in this embodiment, the first radiating portion A1 and the second radiating portion A2 are spaced apart on both sides of the end portion 115, for example, the first radiating portion A1 and the second The radiating parts A2 are respectively disposed at two corners of the frame 110.

Of course, it can be understood that in other embodiments, the positions of the first breakpoint 120 and the second breakpoint 121 can also be adjusted according to specific requirements. For example, the first breakpoint 120 may be set on the first side 116, and the second breakpoint 121 may be set on the second side 117, It only needs to ensure that the first radiating portion A1 and the second radiating portion A2 are spaced apart on both sides of the end portion 115.

It can be understood that in this embodiment, the first break point 120, the second break point 121, the first break groove 122, and the second break groove 123 are filled with insulating materials (such as plastic, rubber, (Glass, wood, ceramic, etc., but not limited to this).

In this embodiment, the size of the wireless communication device 200 is approximately 70 mm*140 mm*8 mm. The wireless communication device 200 further includes a substrate 21 and electronic components 23. The substrate 21 is a printed circuit board (PCB), which can be made of dielectric materials such as epoxy glass fiber (FR4). The substrate 21 is disposed in the accommodating space 113. At least one end of the substrate 21 is spaced apart from the frame 110 to form a corresponding clearance area 211 between the two.

In this embodiment, the electronic component 23 is an optical module. The electronic component 23 is disposed on the substrate 21 and electrically connected to the substrate 21. Understandably, in this embodiment, the optical module may include at least one of a camera module, an auxiliary display screen, an ambient light sensor, and a proximity sensor. Of course, in other embodiments, the electronic component 23 may also be an acoustic module. The acoustic module may include at least one of a speaker, a microphone, and a vibration motor.

It can be understood that, in this embodiment, the wireless communication device 200 may further include a sliding structure (not shown). The sliding structure is connected to the electronic component 23 to control the electronic component 23 to slide relative to the frame 110. When the electronic component 23 slides to the first position, for example, when the electronic component 23 is disposed in the frame 110, the electronic component 23 is in a closed state. When the electronic component 23 slides to the second position, for example, the electronic component 23 slides out of the frame 110 to be exposed from one side of the frame 110 (for example, the end portion 115), The electronic component 23 is in an on state. In this embodiment, the first radiating portion A1 and the second radiating portion A2 are respectively disposed on both sides of the electronic component 23. In this way, the electronic component 23 can be effectively prevented from interfering with the radiation of the first radiation portion A1 and the second radiation portion A2.

Please refer to FIG. 4 together. It can be understood that in this embodiment, the widths of the first break point 120, the second break point 121, the first break groove 122 and the second break groove 123 are all the same For G. The length of the frame 110 between the first break point 120 and the first break groove 122, that is, the first radiating portion A1 is L1. The length of the frame 110 between the second break point 121 and the second break groove 123, that is, the second radiating portion A2 is L2. The width of the clearance area 211 is S. In one embodiment, G is 2 mm, L1 is 34 mm, L2 is 34 mm, and S is 2.5 mm.

It can be understood that, in this embodiment, the first feeding portion 12 is disposed in the accommodating space 113. The first feeding portion 12 may be a connection structure such as a metal dome, a screw, a feeder, a probe and the like. One end of the first feed-in portion 12 is electrically connected to one side of the first radiating portion A1 close to the first break point 120, and the other end is electrically connected to the substrate 21 through the matching circuit 14 One end of the first feeding source 212 is used to feed current to the first radiating portion A1. The other end of the first feed source 212 is grounded.

The second feeding portion 13 is disposed in the accommodating space 113. The second feeding portion 13 may be a connection structure such as a metal dome, a screw, a feeder, a probe and the like. One end of the second feeding portion 13 is electrically connected to the second radiating portion A2, and the other end is electrically connected to one end of the second feeding source 213 provided on the substrate 21, which is then the second radiating portion A2 feeds current. The other end of the second feed source 213 is grounded.

The connecting portion 15 is disposed in the accommodating space 113. The connection part 15 It can be metal shrapnel, screw, feeder, probe and other connection structures. One end of the connecting portion 15 is electrically connected to a position of the first radiating portion A1 near the first breaking groove 122, and the other end is grounded.

The extending portion 16 is disposed in the accommodating space 113 and is located between the second feeding portion 13 and the second side portion 117. The extension 16 includes a first extension 161, a second extension 162, and a third extension 163 connected in sequence.

The first extension 161 is substantially straight. One end of the first extending section 161 is vertically connected to one side of the second feeding portion 13 away from the first side portion 116 and parallel to the end portion 115 and close to the second side portion 117 extend. The second extending section 162 is substantially straight. One end of the second extending section 162 is vertically connected to the end of the first extending section 161 away from the second feeding portion 13 and in a direction parallel to the first side portion 116 and away from the end portion 115 extend. The third extension 163 is substantially straight. One end of the third extension 163 is vertically connected to the end of the second extension 162 away from the first extension 161 and parallel to the first extension 161 and close to the first side 116 The direction extends. The other end of the third extension 163 is grounded.

In this embodiment, the first extension section 161 and the third extension section 163 are disposed at both ends of the second extension section 162, and form a U-shaped structure together with the second extension section 162 . Of course, it can be understood that in other embodiments, the extension portion 16 is not limited to the U-shaped shape described above, and its specific shape and structure can be adjusted according to requirements.

Please refer to FIG. 5 together. In this embodiment, the matching circuit 14 is used to optimize the impedance matching between the first feed source 212 and the first radiating portion A1. The matching circuit 14 includes a first matching element 141, a second matching element 142, a third matching element 143, a fourth matching element 144, a fifth matching element 145, and a sixth matching element 146. Among them, the first match One end of the element 141 is electrically connected to the first feed source 212. The other end of the first matching element 141 is electrically connected to the first feeding portion 12 through a second matching element 142 connected in series, so as to be electrically connected to the first radiating portion A1 through the first feeding portion 12 .

One end of the third matching element 143 is electrically connected between the first matching element 141 and the first feed source 212, and the other end is grounded. One end of the fourth matching element 144 is electrically connected between the first matching element 141 and the second matching element 142, and the other end is grounded. The fifth matching element 145 and the fourth matching element 144 are arranged in parallel. That is, one end of the fifth matching element 145 is electrically connected between the first matching element 141 and the second matching element 142, and the other end is grounded. One end of the sixth matching element 146 is electrically connected between the second matching element 142 and the first feeding portion 12, and the other end is grounded.

In this embodiment, the first matching element 141, the fourth matching element 144, and the sixth matching element 146 are capacitors. The second matching element 142, the third matching element 143, and the fifth matching element 145 are all inductances. The capacitance values of the first matching element 141, the fourth matching element 144, and the sixth matching element 146 are 1 pF, 0.5 pF, and 3 pF, respectively. . The inductance values of the second matching element 142, the third matching element 143 and the fifth matching element 145 are 1.8nH, 12nH and 6.2nH, respectively. Of course, in other embodiments, the first matching element 141, the second matching element 142, the third matching element 143, the fourth matching element 144, the fifth matching element 145, and the sixth matching element 146 are not limited to the above items The said inductance and capacitance can also be other inductances, capacitances or combinations thereof.

It can be understood that after the current is fed from the first feeding source 212, the current is fed to the first radiating portion A1 through the matching circuit 14 and the first feeding portion 12. In this way, the first radiating portion A1 constitutes a first antenna for exciting a first working mode to generate a first radiation frequency The radiation signal of the segment. Meanwhile, after the current is fed from the second feed source 213, the current is fed to the second radiation part A2 through the second feed part 13. In this way, the second radiating portion A2 constitutes a second antenna for exciting a second working mode to generate a radiation signal in a second radiation frequency band.

In this embodiment, the first antenna is a diversity antenna. The second antenna is a global positioning system (Global Positioning System, GPS) antenna. The first working mode is a Long Term Evolution Advanced (LTE-A) low-frequency mode, and the second working mode is a GPS mode. The frequency of the first radiation frequency band is 700-960 MHz. The frequency of the second radiation band is 1575MHz.

It can be understood that, in this embodiment, the antenna structure 100 further includes a switching circuit 17. The switching circuit 17 is disposed in the accommodating space 113. One end of the switching circuit 17 is electrically connected to the connecting portion 15 to be electrically connected to the first radiating portion A1 through the connecting portion 15. The other end of the switching circuit 17 is grounded.

Please refer to FIG. 6 together. The switching circuit 17 includes a switching switch 171, a first switching unit 172 and a second switching unit 174. The changeover switch 171 is electrically connected to the connecting portion 15 to be electrically connected to the first radiating portion A1 through the connecting portion 15. The first switching unit 172 includes a plurality of first switching elements 173. Each of the first switching elements 173 may be an inductor, a capacitor, or a combination of an inductor and a capacitor. The first switching elements 173 are connected in parallel with each other, and one end of the first switching element 173 is electrically connected to the switching switch 171, and the other end is grounded. The second switching unit 174 includes a plurality of second switching elements 175. Each of the second switching elements 175 may be an inductor, a capacitor, or a combination of an inductor and a capacitor. The second switching elements 175 are connected in parallel with each other, and one end of the second switching element 175 is electrically connected to the switching switch 171 and the other end is grounded.

Understandably, by controlling the switching of the switch 171, the first A radiating portion A1 switches to a different first switching element 173 or second switching element 175. Since each of the first switching element 173 and the second switching element 175 has different impedance, the switching of the switching switch 171 can effectively adjust the frequency of the first radiation frequency band, that is, the LTE-A low frequency band.

For example, in this embodiment, the first switching unit 172 in the switching circuit 17 may include four first switching elements 173 having different impedances. When the electronic element 23 is in the off state, by switching the first radiating portion A1 to four different first switching elements 173, for example, to switch to inductance values of 16nH, 10nH, 5.1nH and 3.3nH, respectively The inductor can make the antenna structure 100 work in the 700MHz frequency band, the 800MHz frequency band, the 850MHz frequency band, and the 900MHz frequency band, respectively. In this way, the low frequency in the first working mode of the antenna structure 100 can cover the 700-960 MHz frequency band. When the electronic element 23 is in the on state, by switching the first radiating portion A1 to four different second switching elements 175, for example, the inductance values are 15nH, 9.1nH, 3.9nH and 1.8nH, respectively The inductance can make the antenna structure 100 work in the 700MHz frequency band, the 800MHz frequency band, the 850MHz frequency band, and the 900MHz frequency band, respectively. That is, the low frequency in the first working mode of the antenna structure 100 also covers the 700-960 MHz frequency band. As can be seen from the above description, for each frequency band, the impedance value of the first switching element 173 corresponding to the frequency band is greater than the impedance value of the second switching element 175 corresponding to the frequency band.

FIG. 7 is a graph of S-parameters (scattering parameters) of the first radiating portion A1 when the electronic component 23 is off and the switching circuit 17 is switched to the first switching unit 172. Wherein, the curve S71 is the S11 value when the electronic component 23 is in the off state and the switching circuit 17 is switched to the first switching unit 172, when the first radiating portion A1 is operating in the 700MHz frequency band. Curve S72 is when the electronic component 23 is in the off state and the switching When the circuit 17 is switched to the first switching unit 172, the value of S11 when the first radiating portion A1 is operating in the 800MHz frequency band. The curve S73 is the S11 value when the electronic element 23 is in the off state and the switching circuit 17 is switched to the first switching unit 172, when the first radiating portion A1 is operating in the 850MHz frequency band. The curve S74 is the S11 value when the electronic element 23 is in the off state and the switching circuit 17 is switched to the first switching unit 172, when the first radiating portion A1 is operating in the 900MHz frequency band.

FIG. 8 is a graph of S-parameters (scattering parameters) of the antenna structure 100 when the electronic element 23 is turned on and the switching circuit 17 is switched to the first switching unit 172. Wherein, the curve S81 is the S11 value when the electronic element 23 is in the on state and the switching circuit 17 is switched to the first switching unit 172, when the first radiating portion A1 is operating in the 700MHz frequency band. The curve S82 is the S11 value when the electronic element 23 is in the on state and the switching circuit 17 is switched to the first switching unit 172, when the first radiating portion A1 is operating in the 800MHz frequency band. The curve S83 is the S11 value when the first radiating portion A1 is operating in the 850 MHz frequency band when the electronic component 23 is in the on state and the switching circuit 17 is switched to the first switching unit 172. The curve S84 is the S11 value when the electronic component 23 is turned on and the switching circuit 17 is switched to the first switching unit 172, when the first radiating portion A1 is operating in the 900MHz frequency band.

FIG. 9 is a graph of the S parameter (scattering parameter) of the first radiating portion A1 in the antenna structure 100 when the electronic element 23 is turned on and the switching circuit 17 is switched to the second switching unit 174. Wherein, the curve S91 is the S11 value when the first radiating portion A1 is operating in the 700 MHz frequency band when the electronic component 23 is turned on and the switching circuit 17 is switched to the second switching unit 174. Curve S92 is when the electronic component 23 is in When the switching circuit 17 is switched to the second switching unit 174 in the on state, the S11 value when the first radiating portion A1 is operating in the 800 MHz frequency band. The curve S93 is the S11 value when the first radiating portion A1 is operating in the 850 MHz frequency band when the electronic component 23 is turned on and the switching circuit 17 is switched to the second switching unit 174. The curve S94 is the value of S11 when the electronic element 23 is turned on and the switching circuit 17 is switched to the second switching unit 174 when the first radiating portion A1 is operating in the 900 MHz frequency band.

Obviously, as can be seen from FIGS. 7 to 9, in this embodiment, when the electronic component 23 is in the on state, it will cause the low frequency of the antenna structure 100 to shift. For example, when the electronic component 23 is turned on and the switching circuit 17 is switched to the first switching unit 172, the low-frequency mode of the first radiation portion A1 will shift toward the low frequency by about 80 MHz. In this way, by setting different switching circuits for the off state and the on state of the electronic element 23, it is possible to switch to a different first switching element 173 or second switching element 175, so that whether the electronic element 23 is turned on Whether the state is off or not, the first radiating portion A1 in the antenna structure 100 has better low-frequency characteristics.

It can be understood that in this embodiment, when the electronic component 23 is in the off state, the inductance value corresponding to the frequency band is greater than the inductance value corresponding to the corresponding frequency band when the electronic component 23 is in the on state.

FIG. 10 is a graph of the total radiation efficiency of the first radiating portion A1 in the antenna structure 100 when the electronic component 23 is turned off. Wherein, curve S101 is the total radiation efficiency of the first radiating portion A1 in the antenna structure 100 when the electronic component 23 is in the off state when the first radiating portion A1 is operating in the 700 MHz frequency band. The curve S102 is when the first radiation part A1 in the antenna structure 100 works in the 800 MHz frequency band when the electronic component 23 is off The total radiation efficiency. The curve S103 is the total radiation efficiency of the first radiating portion A1 in the antenna structure 100 when the electronic component 23 is in the off state when operating in the 8500 MHz frequency band. Curve S104 is the total radiation efficiency of the first radiating portion A1 in the antenna structure 100 when the electronic component 23 is in the off state when the first radiating portion A1 is operating in the 900 MHz frequency band.

FIG. 11 is a graph of the total radiation efficiency of the first radiating portion A1 in the antenna structure 100 when the electronic component 23 is turned on. Wherein, curve S111 is the total radiation efficiency of the first radiating portion A1 in the antenna structure 100 when the electronic component 23 is in the on state when the first radiating portion A1 is operating in the 700 MHz frequency band. Curve S112 is the total radiation efficiency of the first radiating portion A1 in the antenna structure 100 when the electronic component 23 is in the on state when the first radiating portion A1 is operating in the 800 MHz frequency band. Curve S113 is the total radiation efficiency of the first radiating portion A1 in the antenna structure 100 when the electronic component 23 is in the on state when the first radiating portion A1 is operating in the 8500 MHz frequency band. Curve S114 is the total radiation efficiency of the first radiating portion A1 in the antenna structure 100 when the electronic component 23 is in the on state when the first radiating portion A1 is operating in the 900 MHz frequency band.

Obviously, as can be seen from FIGS. 10 to 11, regardless of whether the electronic component 23 is in an on state or an off state, the radiation efficiency of the first radiating portion A1 in the antenna structure 100 is greater than -6dB, which satisfies the design of a diversity antenna demand.

FIG. 12 is a graph of the S parameter (scattering parameter) of the second radiating portion A2 in the antenna structure 100. The curve S121 is the S11 value of the second radiating portion A2 when the electronic component 23 is in the on state. The curve S122 is the S11 value of the second radiation portion A2 when the electronic component 23 is in the off state.

FIG. 13 is a graph of the total radiation efficiency of the second radiating portion A2 in the antenna structure 100. Wherein, curve S131 is the second spoke when the electronic component 23 is in the on state The total radiation efficiency of the radiation section A2. The curve S132 is the total radiation efficiency of the second radiation portion A2 when the electronic component 23 is in the off state.

Obviously, as can be seen from FIGS. 12 to 13, regardless of whether the electronic component 23 is in an on state or an off state, the radiation efficiency of the second radiating portion A2 in the antenna structure 100 is greater than -5 dB, which satisfies the design of the GPS antenna demand.

Please refer to FIG. 14 together, which is the antenna structure 100a provided by the second preferred embodiment of the present invention, which can be applied to wireless communication devices 200a such as mobile phones, personal digital assistants, etc., for transmitting and receiving radio waves for transmission, Exchange wireless signals.

The wireless communication device 200a includes an electronic component 23. The antenna structure 100a includes a frame 110, a first feeding portion 12, a second feeding portion 13a, a matching circuit 14, a connecting portion 15a, and a switching circuit 17. The frame 110 is provided with a first break point 120, a second break point 121, a first break groove 122 and a second break groove 123. The first break point 120, the second break point 121, the first break groove 122 and the second break groove 123 are divided into two parts from the housing 11, that is, the first radiating portion A1 and the second radiating portion A2.

Understandably, in this embodiment, the difference between the antenna structure 100a and the antenna structure 100 is that the connecting portion 15a is not directly electrically connected to the first radiating portion A1, but is spaced from the first radiating portion A1 Coupling settings.

It can be understood that, in this embodiment, the difference between the antenna structure 100a and the antenna structure 100 is that the antenna structure 100a does not include the extension portion 16, that is, the extension portion 16 is omitted.

Understandably, in this embodiment, the difference between the antenna structure 100a and the antenna structure 100 is that the second feeding portion 13a in the antenna structure 100a is not directly electrically connected to the The second radiating portion A2 is coupled with the second radiating portion A2, and the second feed source 213 is used to couple the current signal to the second radiating portion A2.

It can be understood that, in this embodiment, the difference between the antenna structure 100 a and the antenna structure 100 is that the antenna structure 100 a further includes a grounding portion 18. One end of the grounding portion 18 is electrically connected to the second radiating portion A2, or is spaced and coupled with the second radiating portion A2. The other end of the grounding portion 18 is grounded to provide grounding for the second radiating portion A2 when the second radiating portion A2 is fed in by coupling.

That is to say, the feed and ground in the same antenna, for example, the first antenna (ie, the first radiating portion A1) or the second antenna (ie, the second radiating portion A2) may be coupled. That is, the feed and ground of the first antenna and the second antenna are coupled with the corresponding radiating portion at intervals. Of course, if the first antenna or the second antenna is fed directly, the antenna may not be grounded. If the first antenna or the second antenna is coupled and fed in, the antenna further includes a corresponding ground portion to avoid poor performance of the antenna radiation performance.

It can be understood that, in other embodiments, the positions of the first antenna and the second antenna are interchangeable.

Understandably, in this embodiment, the first antenna and the second antenna preferably do not overlap with the electronic element 23. That is, the first breakpoint 120 and the second breakpoint 121 are preferably disposed on both sides of the electronic component 23 without overlapping or being shielded by the electronic component 23.

It can be understood that in other embodiments, the first antenna and the second antenna are not limited to the diversity antenna and GPS antenna described above, but may also be a WIFI antenna, a Bluetooth antenna, an NFC antenna, or the like.

Obviously, the antenna structure 100/100a of the present invention and the wireless communication device 200/200a having the antenna structure 100/100a are provided by the first radiating portion A1 and the second radiating portion A2 on both sides of the electronic component 23 Side, and by appropriately adjusting the feeding, grounding, and switching circuits of the first radiating portion A1 and the second radiating portion A2, characteristics such as broadband and good antenna efficiency can be effectively achieved. Furthermore, the antenna structure 100/100a can be applied in an environment where the antenna space is limited, and while ensuring the screen integrity of the display unit 201, it can effectively prevent the electronic element 23 from affecting the antenna structure The masking effect of 100/100a is more beautiful and practical.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. In addition, those skilled in the art can also make other changes within the spirit of the present invention. Of course, these changes made according to the spirit of the present invention should be included in the scope of protection claimed by the present invention.

100: antenna structure

11: Shell

110: border

111: backplane

113: accommodating space

116: First side

117: Second side

120: first breakpoint

121: Second breakpoint

122: The first break slot

123: Second break slot

A1: First Radiation Department

A2: Second Radiation Department

12: First feed-in

13: Second feed-in

14: Matching circuit

15: Connection

16: Extension

161: The first extension

162: Second extension

163: The third extension

17: switch circuit

200: wireless communication device

21: substrate

211: Clearance area

212: The first feed source

213: Second feed source

23: Electronic components

Claims (10)

An antenna structure is applied to a wireless communication device. The wireless communication device includes electronic components. The improvement is that the antenna structure includes a frame, a first feeding portion, and a second feeding portion. The frame is made of a metal material. The frame includes an end portion, a first side portion, and a second side portion, the first side portion is opposite to the second side portion, and is connected to both ends of the end portion, and the frame is further provided with A first break point, a second break point, a first break groove, and a second break groove, the first break point and the second break point are disposed on the end portion, and the first break groove is disposed on In the first side portion, the second break groove is provided in the second side portion, and the first break point, the second break point, the first break groove, and the second break groove are all Penetrate and cut off the frame, and then divide two radiating parts from the frame, the two radiating parts are respectively disposed at two corners of the frame, and located on both sides of the electronic component, the first A feeding part and the second feeding part are electrically connected to the corresponding radiating parts, respectively, for feeding currents to the corresponding radiating parts, respectively. The antenna structure as described in item 1 of the patent application scope, wherein the two radiating parts include a first radiating part and a second radiating part, and the frame between the first break point and the first break groove Forming the first radiating portion, the frame between the second break point and the second breaking groove, the second radiating portion. The antenna structure as described in item 2 of the patent application scope, wherein one end of the first feeding part is directly electrically connected to the first radiating part or is spaced and coupled with the first radiating part, and the other end is matched by a matching circuit It is electrically connected to a first feed source to feed current to the first radiating part, and one end of the second feed part is directly electrically connected to the second radiating part or spaced apart from the second radiating part , The other end is electrically connected to a second feed source to feed current to the second radiating portion, the antenna structure further includes a connecting portion, one end of the connecting portion is directly electrically connected to the first radiating portion or The first radiation part is spaced and coupled, and the other end of the connection part is grounded. The antenna structure according to item 3 of the patent application scope, wherein the antenna structure further includes a switching circuit, the switching circuit includes a switching switch, a first switching unit, and a second switching unit, and the switching switch is electrically connected to the In the connection part, the first switching unit includes a plurality of first switching elements, the first switching elements are connected in parallel with each other, and one end of the first switching element is electrically connected to the switching switch and the other end is grounded, and the second switching unit includes A plurality of second switching elements, the second switching elements are connected in parallel with each other, and one end of the second switching element is electrically connected to the switch, and the other end is grounded. By controlling the switching of the switch, the first radiating portion Switch to a different first switching element or the second switching element, and then adjust the operating frequency of the first radiation part. The antenna structure according to item 1 of the patent application scope, wherein the antenna structure further includes an extension portion, the extension portion includes a first extension section, a second extension section, and a third extension section connected in sequence, the first One end of the extension section is vertically connected to one side of the second feed portion away from the first side section, and extends in a direction parallel to the end section and close to the second side section, the second extension section One end is vertically connected to the end of the first extension section away from the second feed portion, and extends in a direction parallel to the first side portion and away from the end section, and one end of the third extension section is vertically connected The second extension section is away from the end of the first extension section and extends in a direction parallel to the first extension section and close to the first side section, and the other end of the third extension section is grounded. The antenna structure as described in item 1 of the patent application scope, wherein the two radiating parts are two of a GPS antenna, a WIFI antenna, a diversity antenna, a Bluetooth antenna and an NFC antenna. A wireless communication device includes the antenna structure as described in any one of the patent application items 1-3 and 5-6. The wireless communication device as described in item 7 of the patent application scope, wherein the The line communication device further includes a display unit and a backplane. The display unit is accommodated in an opening on one side of the frame. The display unit includes a complete display plane without gaps. The backplane is made of metal material. The back plate is disposed at an edge of the frame away from the display unit, and is integrally formed with the frame, and the electronic component slides relative to the frame. The wireless communication device as described in item 8 of the patent scope, wherein the electronic component is an optical module or an acoustic module. The wireless communication device according to item 8 of the patent application scope, wherein two of the radiating parts include a first radiating part and a second radiating part, the antenna structure further includes a switching circuit, and the switching circuit includes a switching switch, a A switching unit and a second switching unit, the switching switch is electrically connected to the first radiating portion, the first switching unit includes a plurality of first switching elements, the first switching elements are connected in parallel with each other, and One end is electrically connected to the switch, and the other end is grounded. The second switching unit includes a plurality of second switching elements, the second switching elements are connected in parallel with each other, and one end of the second switching element is electrically connected to the switch One end is grounded, and when the electronic component is disposed in the frame, the switching of the switching switch is controlled so that the first radiating portion is switched to a different first switching element, thereby adjusting the first radiating portion Operating frequency; when the electronic component slides out of the frame, the switching of the switch is controlled so that the first radiating portion switches to a different second switching element, thereby adjusting the first radiating portion Working frequency.

Images