CN112350054B - Mobile terminal - Google Patents
Mobile terminal Download PDFInfo
- Publication number
- CN112350054B CN112350054B CN201910736043.9A CN201910736043A CN112350054B CN 112350054 B CN112350054 B CN 112350054B CN 201910736043 A CN201910736043 A CN 201910736043A CN 112350054 B CN112350054 B CN 112350054B
- Authority
- CN
- China
- Prior art keywords
- antenna
- circuit board
- radiation body
- signal
- mobile terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- 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
- 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
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- 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
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Support Of Aerials (AREA)
- Telephone Set Structure (AREA)
Abstract
The application discloses a mobile terminal for realizing multifrequency, wide band design and the miniaturization of antenna radiator of antenna. The application provides a mobile terminal comprising: the antenna comprises an antenna radiator and a circuit board, wherein the circuit board is provided with a processor and a signal source; the antenna radiator comprises a first radiation body and a second radiation body, the first radiation body is connected and conducted with the end part of the second radiation body, and the rest parts are separated; the first radiation body is provided with at least two signal feed points, one of the at least two signal feed points is arranged at the end part of the first radiation body, and the at least two signal feed points are connected with the signal source; the second radiation body is provided with at least one short-circuit point at a position except the end part, and the at least one short-circuit point is selectively connected with a grounding reference point on the circuit board through the processor control switch circuit.
Description
Technical Field
The application relates to the technical field of communication, in particular to a mobile terminal.
Background
With the continuous development of mobile terminal (such as mobile phone) technology, the screen area ratio (the ratio of the screen area to the whole area) is continuously increased, and the full screen becomes a trend.
The routing area, the antenna height and the antenna clearance of the antenna of the mobile terminal have direct influence on the antenna performance. The ratio of the mobile terminal screen is continuously improved, so that the design space of the antenna is continuously reduced. Meanwhile, broadband and multi-antenna design is also the design trend of mobile terminal antennas in 5G systems.
Therefore, how to satisfy the requirement of antenna miniaturization and the requirement of broadband and multi-antenna reconfiguration is a technical problem to be solved at present.
Disclosure of Invention
The embodiment of the application provides a mobile terminal, which is used for realizing multi-frequency and broadband design of an antenna and miniaturization of an antenna radiator.
The application provides a mobile terminal, including: the antenna comprises an antenna radiator and a circuit board, wherein the circuit board is provided with a processor and a signal source; the antenna radiator comprises a first radiation body and a second radiation body, the first radiation body is connected and conducted with the end part of the second radiation body, and the rest parts are separated; the first radiation body is provided with at least two signal feed points, one of the at least two signal feed points is arranged at the end part of the first radiation body, and the at least two signal feed points are connected with the signal source; the second radiation body is provided with at least one short-circuit point except the end part, and the at least one short-circuit point is selectively connected with a grounding reference point on the circuit board through a switch circuit; the signal source and the processor are arranged on the circuit board, and the processor is used for controlling the switch circuit, so that at least one short circuit point arranged on the second radiation body is connected with or disconnected with a ground reference point on the circuit board.
Optionally, the mobile terminal further includes a tuning circuit disposed on the circuit board, and the signal feed point disposed at the end of the first radiation body is connected to the signal source through the tuning circuit.
Optionally, at least one of the remaining signal feed points, except the signal feed point arranged at the end of the first radiating body, of the at least two signal feed points is directly connected to the signal source.
Optionally, the first radiation body is a partial metal frame of the mobile terminal, the second radiation body is a flexible circuit board, and an insulating layer is arranged between the partial metal frame and the flexible circuit board.
Optionally, the first radiation body is a first flexible circuit board, the second radiation body is a second flexible circuit board, and an insulating layer is disposed between the first flexible circuit board and the second flexible circuit board.
The application also provides a mobile terminal, which comprises an antenna radiator and a circuit board, wherein the circuit board is provided with a processor and a signal source; the antenna radiator comprises a first radiating body and a second radiating body, the first radiating body comprises a first part and a second part which are separated, the first part and the second part are selectively connected through a switch, the first radiating body is connected with and conducted with the end part of the second radiating body, and the rest parts are separated; at least two signal feed points are arranged on the first radiation, one of the at least two signal feed points is arranged at the end part of the first radiation body, and the at least one signal feed point is connected with the signal source; the second radiation body is provided with at least one short-circuit point except the end part, and the at least one short-circuit point is connected with a grounding reference point on the circuit board; the signal source and the processor are arranged on the circuit board, and the processor is used for controlling the switch to enable the first part and the second part on the first radiation body to be connected or disconnected.
Optionally, the mobile terminal further includes a tuning circuit disposed on the circuit board, and the signal feed point disposed at the end of the first radiation body is connected to the signal source through the tuning circuit.
Optionally, the signal feed points of the at least two signal feed points, except the signal feed point arranged at the end of the first radiation body, are arranged between the end of the first radiation body and the switch and are directly connected to the signal source.
Optionally, the first radiation body is a partial metal frame of the mobile terminal, the second radiation body is a flexible circuit board, and an insulating layer is arranged between the partial metal frame and the flexible circuit board;
optionally, the first radiation body is a first flexible circuit board, the second radiation body is a second flexible circuit board, and an insulating layer is disposed between the first flexible circuit board and the second flexible circuit board.
In the above embodiment of the present application, since the two end portions of the first radiation body and the second radiation body are connected and the other portions are separated, the slot antenna formed by the first radiation body and the second radiation body meets the requirement of antenna miniaturization. Because the first antenna radiator is provided with at least two signal feed points connected with the signal source, one of the signal feed points is positioned in the first radiating body, and the other signal feed points can be positioned in the middle of the first radiating body, the signal source can be fed into the antenna through the plurality of signal feed points. And because the position of the signal feed-in point is different, so when the signal is fed in from different signal feed-in points, different antenna forms can be formed, for example, when the antenna radiator is conducted with the ground reference point on the circuit board, the signal source is fed in from the end part to form a LOOP antenna and a PIFA antenna, and the signal of the signal source is fed in from the signal feed-in point in the middle of the first radiating body to form a slot antenna; when the antenna radiator is disconnected with the grounding reference point on the circuit board, the signal of the signal source is fed from the end part of the first radiation body to form a monopole antenna. And because signal current loops formed by feeding signal sources from different signal feed points are different, the formed antenna has different self-resonant frequencies, thereby realizing the antenna reconfigurable design of a single antenna radiator and the multi-feed and broadband design of the antenna.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic diagram of an antenna structure in a mobile terminal according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an equivalent current closed loop circuit of a monopole antenna formed by an antenna in a mobile terminal according to an embodiment of the present application;
fig. 3 is a schematic diagram of an equivalent current closed LOOP circuit of a PIFA antenna, an LOOP antenna and a slot antenna formed by antennas in a mobile terminal according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an antenna 100 applied in a mobile phone according to an embodiment of the present application;
fig. 5 is a schematic diagram of an antenna structure in a mobile terminal according to an embodiment of the present application;
fig. 6 is a schematic diagram of an equivalent current closed loop circuit of a monopole antenna and a PIFA antenna which are formed by an antenna in a mobile terminal according to an embodiment of the present application;
fig. 7 is a schematic diagram of an equivalent current closed loop circuit of a PIFA antenna and a slot antenna formed by an antenna in a mobile terminal according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a mobile terminal in an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the exemplary embodiments of the present application clearer, the technical solutions in the exemplary embodiments of the present application will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present application, and it is obvious that the described exemplary embodiments are only a part of the embodiments of the present application, but not all the embodiments.
In order to realize the design of broadband, multi-feed and small radiator of the mobile terminal, the conventional mobile terminal adopts the design of a reconfigurable antenna, so that the common antenna design under the condition of single antenna body design is realized. However, the conventional reconfigurable antenna includes antennas of monopole, planar inverted F-antenna (PIFA), F-antenna (IFA), LOOP, and the like.
With the trend of miniaturization and full-screen design of mobile terminals, the design space in mobile terminals (such as mobile phones) is further reduced, and on the other hand, the requirements of 5G systems on the frequency band width and the radiation intensity of antennas on the mobile terminals are also improved.
Therefore, in order to meet the requirement of antenna miniaturization and the requirement of broadband and multi-antenna reconfiguration, the embodiment of the application provides a design scheme of a reconfigurable slot antenna, the slot antenna can be formed by conducting the end parts of two antenna radiation bodies, a plurality of signal feed points are arranged at the same time to be linked with a signal source, and different types of antennas formed by feeding antenna radiators from different signal feed points through the signal source are compatible with the slot antenna on the basis of the design of internal antennas such as a monopole antenna, a PIFA and the like through the improvement of the conventional antenna design. This enables further multi-frequency, wideband design and radiator miniaturization of the antenna in an environment where the antenna headroom is extremely compressed.
The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
One embodiment of the present application provides a mobile terminal, which may be a device for providing voice and/or data connectivity to a user, and may include various handheld devices with wireless communication capabilities, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, etc., for example, the terminal may be a smartphone or tablet computer, etc. The embodiment of the present application does not limit this.
The mobile terminal provided by the embodiment of the application comprises an antenna radiator. The ends of the two antenna radiation bodies are connected, and other parts are not connected, so that the antenna radiation body with the slot antenna structure is formed. At least two signal feed points connected with a signal source are arranged at the end part and the middle part of the first radiation body, and a short circuit point is arranged on the second radiation body and is connected with a ground reference point on a circuit board through a switch circuit. The switching circuit may be disconnected or short-circuited. When the antenna radiator is disconnected with the grounding reference point on the circuit board through the switch circuit, a signal source is fed into the antenna radiator from the end signal feed point, and a monopole antenna can be formed; when the antenna radiator is conducted with the grounding reference point on the circuit board through the switch circuit, the signal source is fed into the antenna radiator from the end part and the signal feed point in the middle of the first radiation body, and a PIFA antenna, an LOOP antenna and a slot antenna with different self-resonant frequencies can be formed. The antenna radiator at this time may be referred to as a ground shorted antenna radiator.
The ground reference point on the circuit board refers to an equipotential point or a plane on the circuit board as a circuit or system reference, the so-called ground is not really connected with the ground, and the ground refers to a potential low point of the whole circuit or system and serves as a common negative pole of the circuit, so that the whole circuit or system has a loop signal common end. The ground reference point on the circuit board may be a point or an equipotential plane.
Alternatively, the antenna radiator may be an antenna radiator that is internally slotted and does not cut itself. Because of the current skin effect of the high-frequency signal, the high-frequency signal current is transmitted at the edge of the antenna radiator, thus not influencing the existing signal transmission and having the structure of the slot antenna. The first radiation body of the antenna radiator can be formed by cutting a metal frame of the mobile terminal, the second radiation body can be a Flexible Printed Circuit (FPC), and an insulating film covers one side of the FPC antenna, which is attached to the first radiation body, so that the first radiation body formed by cutting the metal frame can form a slot antenna structure. The first and second radiating bodies may be both FPCs with an insulating film interposed therebetween, thereby constituting a slot antenna structure.
Alternatively, the switching circuit may be a variable capacitor or inductor or an active switch or other device or combination circuit capable of performing a switching function.
Optionally, the signal source is disposed on the circuit board, and the signal source may be a cellular signal for communication, or may also be a Positioning signal for Positioning, such as a Global Positioning System (GPS) signal or a beidou satellite navigation System signal, or other signals, which is not limited in this embodiment.
The mobile terminal provided in the embodiment of the present application further includes a processor, where the processor is located on the circuit board, and the processor is not shown in the drawing, and the processor may control a state of a switch circuit between a short-circuit point provided on the second antenna radiator and a ground reference point on the circuit board.
During specific implementation, if the processor controls the short-circuit point on the antenna radiator to be disconnected from the grounding reference point on the circuit board, the signal of the signal source is fed from the end part and is transmitted to the other end of the antenna radiator, and the antenna forms a monopole wire; if the processor controls the short-circuit point on the antenna radiator to be conducted with the grounding reference point on the circuit board, part of the signal flow of the signal source is fed in from the end part, the LOOP antenna is formed from the first radiating body to the grounding reference point on the circuit board, the PIFA antenna is formed from the second radiating body to the other end, and the signal fed in from the signal feed point in the middle of the first radiating body flows through the first radiating body and the second radiating body to the grounding reference point on the circuit board to form the slot antenna.
It can be seen that, according to the skin effect of the signal stream, the signal stream forms a plurality of LOOPs on the antenna, and further forms a plurality of antenna shapes such as a monopole antenna, a PIFA antenna, a LOOP antenna, or a slot antenna, where signal frequencies in different signal stream LOOPs are different, that is, the corresponding antenna shapes have different self-resonant frequencies.
The embodiments of the present application will be described in detail with reference to fig. 1 to 3.
Fig. 1 schematically shows an antenna structure in a mobile terminal in an embodiment of the present application. As shown, the antenna 100 includes an antenna radiator 10, a signal source 12, a tuning circuit 13, an active switch 14, and a variable capacitor 15.
The antenna radiator 10 is made of a metal material or another conductive material.
The antenna radiator 10 is provided with a slot 11 in the middle, and the slot 11 does not cut the antenna radiator, so that the antenna radiator 10 forms an upper part and a lower part as shown in the figure, wherein the antenna radiator located on the side below the slot 11 (i.e. connected with the signal source) is referred to as a first radiation body, and the other antenna radiator is referred to as a second radiation body. The antenna radiator 10 may also be formed by a first radiating body and a second radiating body which are connected and conducted at end portions and separated at an intermediate portion, the separated portions forming a slot 11, and a ground mark in the figure represents a ground reference point on a circuit board.
The second radiating body (the antenna radiator on the upper side of the slot 11 in the figure) has a short-circuit point, which is connected to a ground reference point on the circuit board through an active switch 14 and a variable capacitor 15, the active switch 14 and the variable capacitor 15 form a switching circuit, and a signal source 12 is fed to the end of the antenna radiator through a tuning circuit 13 and is directly connected to a signal feed point in the middle of the first radiating body (the antenna radiator on the lower side of the slot 11 in the figure).
The processor (not shown) controls the opening and closing of the active switch 14 and thus the connection of the antenna radiator 10 to a ground reference on the circuit board, and controls the tuning circuit 13 to tune the signal fed to the antenna radiator 10.
Fig. 2 is a schematic diagram illustrating an equivalent current closed loop of a monopole antenna formed by an antenna in a mobile terminal in the embodiment of the present application. If the active switch 14 is open and the antenna radiator 10 is disconnected from the ground reference on the circuit board, the signal from the signal source 12 is fed through the tuning circuit 13 to the end of the antenna radiator 10, and the current flows along the surface of the antenna radiator 10 to the other end of the antenna radiator 10, forming a signal flow path as shown by the dotted line in the figure, so that the antenna radiator 10 forms a monopole antenna having a self-resonant frequency f 1.
Fig. 3 is a schematic diagram illustrating an equivalent current closed LOOP of an antenna in a mobile terminal constituting a PIFA antenna, a LOOP antenna and a slot antenna in the embodiment of the present application. If the active switch 14 is short-circuited, the antenna radiator 10 is conducted to the ground reference on the circuit board and the antenna radiator 10 is conditioned for a slot antenna due to the presence of the slot 11. One signal stream of the signal source 12 is fed via the tuning circuit 13 to the end of the antenna radiator 10 and flows along the surface of the first radiating body to the other end of the antenna radiator 10, forming a signal stream with a frequency f2, as shown by the dashed line in the figure, so that the antenna through which the signal stream passes forms a PIFA antenna with a self-resonant frequency f 2. Another signal of the signal source 12 is fed to the end of the antenna radiator 10 through the tuning circuit 13, along the surface of the second radiating body, and flows to the ground reference point on the circuit board through the closed active switch 14 and the variable capacitor 15, forming a signal flow LOOP with a frequency f3, so that the antenna through which the signal flow passes forms a LOOP antenna with a self-resonant frequency f 3. The other signal flow of the signal source 12 is fed from the middle of the first radiating body, flows along the surface of the first radiating body, and flows to the ground reference point on the circuit board through the active switch 14 and the variable capacitor 15, forming a signal flow loop with the frequency f4, so that the antenna through which the signal flow passes forms a slot antenna with the self-resonant frequency f 4.
It can be seen that, by different connection states (on or off) of the active switch 14, antennas with multiple forms can be realized in one antenna body, thereby realizing a multi-structure design based on the same antenna.
Fig. 4 schematically shows a structure of the antenna 100 in the embodiment of the present application, which is applied in a mobile phone. The bottom metal frame of the mobile phone 400 is used as the first radiation body 40, the FPC lines are attached to the inner wall of the metal frame clearance area, and the FPC lines are used as the second radiation body 41. The first radiation body 40 and the second radiation body 41 are connected end to end by the short circuit point 420 and the short circuit point 421 at the end of the second radiation body 41, the second radiation body 41 has an insulating film in the middle, so that the first radiation body 40 and the second radiation body 41 form an equivalent gap in the middle, the signal source 43 is connected to the first radiation body 40 through the elastic sheet 423 at the impedance tuning circuit 44 and the short circuit point 421, and the first radiation body 40 has a short circuit point 422 in the middle and is selectively grounded through the switch 45. By opening or closing the switch 45, a single-pole or PIFA, LOOP and slot antenna form fed through the shorting point 421 is formed, thereby realizing a multi-frequency, wideband design of a single antenna.
Another embodiment of the present application further provides a mobile terminal including an antenna radiator. The antenna radiator comprises a first radiation body and a second radiation body. The first radiating body is divided into a first part and a second part, the first part and the second part are connected through a switch, and the switch can be selectively switched off and on. The first radiation body is connected and conducted with the end part of the second radiation body, and the rest parts are separated; the first radiation body is provided with at least two signal feed points which are connected with a signal source, and one of the at least two signal feed points is arranged at the end part of the first radiation body; the second radiation body is provided with at least one short circuit point except the end part to be connected with a grounding reference point on the circuit board. When the switch on the first radiation body is disconnected, a signal source is fed into the antenna radiator from the end part and passes through the short-circuit point to the switch disconnection part to form a PIFA antenna, and the signal source passes through the first radiation body from the end part and reaches the switch disconnection part to form a monopole antenna; when the switch on the first radiation body is conducted, the signal source is fed into the antenna radiation body through the end part of the antenna radiation body to form the PIFA antenna, and meanwhile, the signal source can form the slot antenna from the first radiation body to the second radiation body through the other end part. Such an antenna radiator may be referred to as a selective path antenna radiator.
The ground reference point on the circuit board refers to an equipotential point or a plane on the circuit board as a circuit or system reference, the so-called ground is not really connected with the ground, and the ground refers to a potential low point of the whole circuit or system and serves as a common negative pole of the circuit, so that the whole circuit or system has a loop signal common end. The ground reference point on the circuit board may be a point or an equipotential plane.
Alternatively, the antenna radiator may be an antenna radiator that is internally slotted and does not cut itself. Because of the current skin effect of the high-frequency signal, the high-frequency signal current is transmitted at the edge of the antenna radiator, thus not influencing the existing signal transmission and having the structure of the slot antenna. The first radiation body of the antenna radiator can be formed by cutting a metal frame of the mobile terminal, the second radiation body can be a Flexible Printed Circuit (FPC), and an insulating film covers one side of the FPC antenna, which is attached to the first radiation body, so that the first radiation body formed by cutting the metal frame can form a slot antenna structure. The first and second radiating bodies may be both FPCs with an insulating film interposed therebetween, thereby constituting a slot antenna structure.
Optionally, the signal source is disposed on the circuit board, and the signal source may be a cellular signal for communication, or may also be a Positioning signal for Positioning, such as a Global Positioning System (GPS) signal or a beidou satellite navigation System signal, or other signals, which is not limited in this embodiment.
The mobile terminal provided by the embodiment of the present application further includes a processor, the processor is located on the circuit board, which is not shown in the figure, and the processor can control the state of the switch on the first radiation body.
In specific implementation, if the processor controls the switch on the first radiation body to be switched off, the signal source is fed from the end part of the antenna radiation body, and a part of signal current flows through the first radiation body to the switched-off switch to form a monopole antenna; and a part of signal current further passes through the second radiating body, the end part connected with the two radiating bodies and the first radiating body to the switch, so that the PIFA antenna is formed. If the processor controls the switch on the first radiation body, the signal source is fed in through the signal feed point at the end part, and the signal current flows to the other end of the second radiation body through the short-circuit point which is connected with the ground reference point on the circuit board on the second radiation body to form the PIFA antenna; the signal source feeds in signal current through a signal feed point in the middle of the first radiation body, and the signal current flows from the first radiation body and the second radiation body to a ground reference point on the circuit board to form a slot antenna.
The embodiments of the present application will be described in detail with reference to fig. 5 to 7.
Fig. 5 schematically illustrates an antenna structure of a mobile terminal in an embodiment of the present application. As shown, the mobile terminal 500 includes an antenna radiator 50, a signal source 51, a tuning circuit 52, a switch 53, and a matching device 54.
The antenna radiator 50 is made of a metal material or another conductive material.
The antenna radiator 50 is formed with a gap in the middle thereof, which is not cut off, so that the antenna radiator 50 is formed into upper and lower portions as shown in the drawing, where the antenna radiator located on the side below the gap (i.e., connected to a signal source) is referred to as a first radiation body and the other antenna radiator is referred to as a second radiation body. The antenna radiator 50 may be formed by connecting and conducting the first radiation body and the second radiation body at the end portions and separating them at the middle portion.
The first radiating body (antenna radiator with switch in the figure) is divided into a first part (left part of switch) and a second part (right part of switch), which are selectively connected by a switch 53. The second radiating body (the antenna radiator without the switch in the figure) has a short-circuit point connected to a ground reference point on the circuit board via the matching device 54, the ground reference in the figure representing the ground reference point on the circuit board. The signal source 51 is fed to the end of the antenna radiator via a tuned circuit 52 and is directly connected to a signal feed point in the middle of the first radiating body.
The processor (not shown) can control the switch 53 to be turned on and off, so as to control the connection state of the first radiator body, and the processor can also control the tuning circuit 52 to tune the signal fed into the antenna radiator 50.
Fig. 6 is a schematic diagram illustrating an equivalent current closed loop of an antenna in the mobile terminal constituting a monopole antenna and a PIFA antenna in the embodiment of the present application; if the switch 53 is opened, the first part and the second part of the first radiating body are disconnected, and a signal passes through the signal source 51 and the tuning circuit 52 to the position where the switch is opened to form a double-antenna branch; the signal current flows through the first part of the first radiating body as shown by the dashed line in the figure forming a monopole antenna branch of self-resonance frequency f5 and the signal current flows through the second radiating body and the second part of the first radiating body as shown by the dashed line in the figure forming a PIFA antenna branch of self-resonance f 6.
Fig. 7 is a schematic diagram illustrating an equivalent current closed loop of an antenna in a mobile terminal according to an embodiment of the present application, which constitutes a PIFA antenna and a slot antenna; if the switch 53 is turned on, a signal stream from the signal source 51 is fed through the tuning circuit 52 to the end of the second radiating body, forming a signal stream loop at a frequency f7 as shown by the dashed line in the figure, so that the antenna through which the signal stream passes forms a PIFA antenna with a self-resonant frequency f 7. The other signal flow of the signal source 51 is fed from the first radiating body first part, along the first radiating body surface, and flows through the switch 53, the second radiating body surface and the matching device 54 to the ground reference point on the circuit board, forming a signal flow loop with frequency f8, so that the antenna through which the signal flow passes forms a slot antenna with self-resonant frequency f 8.
Therefore, by means of different connection states (on or off) of the switch 53, antennas with various forms can be realized in one antenna body, and therefore multi-structure design based on the same antenna is realized.
Fig. 8 exemplarily shows a schematic structural diagram of a mobile terminal in the embodiment of the present application. In this figure, a mobile phone is taken as an example of the mobile terminal, and a layout structure of the mobile terminal 100 and/or the mobile terminal 500 in the mobile terminal provided in the embodiment of the present application is introduced from an overall structure. As shown, the metal frame of the cell phone 800 is a metal frame. The metal frame is formed by 4 slots at the top end and the bottom end of the mobile phone to form an upper frame 801, a lower frame 802, a left frame 803 and a right frame 804, the upper frame 801 and the lower frame 802 are used as antenna radiators, the left frame 803 and the right frame 804 are connected with the circuit board 81, the antenna radiators are not used, a grounding reference point is arranged, and the connection is equivalent to the connection with a reference ground. Because the distance between the circuit board 81 and the upper frame 801 and the distance between the circuit board and the lower frame 802 are closer and closer in the design environment of the full-face screen, the clearance of the antenna is reduced, and the conventional antenna design method increases the space for designing the radiation antenna in the clearance area, so that the bandwidth and the radiation efficiency of the antenna cannot be ensured. The antenna headroom is more fully utilized in the form of the mobile terminal 100 and/or the mobile terminal 500.
All other embodiments, which can be derived by a person skilled in the art from the exemplary embodiments shown in the present application without inventive effort, shall fall within the scope of protection of the present application. Moreover, while the disclosure herein has been presented in terms of exemplary one or more examples, it is to be understood that each aspect of the disclosure can be utilized independently and separately from other aspects of the disclosure to provide a complete disclosure.
It should be understood that the terms "first," "second," "third," and the like in the description and in the claims of the present application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used are interchangeable under appropriate circumstances and can be implemented in sequences other than those illustrated or otherwise described herein with respect to the embodiments of the application, for example.
Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A mobile terminal, comprising: the antenna comprises an antenna radiator and a circuit board, wherein the circuit board is provided with a processor and a signal source;
the antenna radiator comprises a first radiation body and a second radiation body, and the first radiation body and the second radiation body are connected end to form a closed loop structure with a slot in the middle;
the first radiation body is provided with at least two signal feed points, one of the at least two signal feed points is arranged at the end part of the first radiation body, and the at least two signal feed points are connected with the signal source;
the second radiation body is provided with at least one short-circuit point except the end part, and the at least one short-circuit point is selectively connected with a grounding reference point on the circuit board through a switch circuit;
the processor is used for controlling the switch circuit, so that at least one short circuit point arranged on the second radiation body is connected with or disconnected with a ground reference point on the circuit board.
2. The mobile terminal of claim 1, further comprising a tuning circuit disposed on the circuit board, wherein the signal feed point disposed at the end of the first radiating body is connected to the signal source through the tuning circuit.
3. A mobile terminal according to claim 1 or 2, characterized in that at least one of the at least two signal feed points is directly connected to the signal source, except for the signal feed point provided at the end of the first radiating body.
4. The mobile terminal of claim 1, wherein the first radiating body is a portion of a metal bezel of the mobile terminal, the second radiating body is a flexible circuit board, and an insulating layer is disposed between the portion of the metal bezel and the flexible circuit board.
5. The mobile terminal of claim 1, wherein the first radiating body is a first flexible circuit board and the second radiating body is a second flexible circuit board with an insulating layer disposed therebetween.
6. A mobile terminal is characterized by comprising an antenna radiator and a circuit board, wherein a processor and a signal source are arranged on the circuit board;
the antenna radiator comprises a first radiation body and a second radiation body, the first radiation body comprises a first part and a second part which are separated, the first part and the second part are selectively connected through a switch, and the first radiation body and the second radiation body are connected end to form a closed loop structure with a middle slot;
at least two signal feed points are arranged on the first radiation, one of the at least two signal feed points is arranged at the end part of the first radiation body, and the at least one signal feed point is connected with the signal source;
the second radiation body is provided with at least one short-circuit point except the end part, and the at least one short-circuit point is connected with a grounding reference point on the circuit board;
the processor is configured to control the switch such that the first portion and the second portion on the first radiating body are connected or disconnected.
7. The mobile terminal of claim 6, further comprising a tuning circuit disposed on the circuit board, wherein the signal feed point disposed at the end of the first radiating body is connected to the signal source through the tuning circuit.
8. A mobile terminal according to claim 6 or 7, wherein the remaining signal feeds of said at least two signal feeds, other than the signal feed provided at the end of the first radiating body, are provided between the end of the first radiating body and the switch and are directly connected to the signal source.
9. The mobile terminal of claim 6, wherein the first radiating body is a portion of a metal bezel of the mobile terminal, the second radiating body is a flexible circuit board, and an insulating layer is disposed between the portion of the metal bezel and the flexible circuit board.
10. The mobile terminal of claim 6, wherein the first radiating body is a first flexible circuit board, the second radiating body is a second flexible circuit board, and an insulating layer is disposed between the first flexible circuit board and the second flexible circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910736043.9A CN112350054B (en) | 2019-08-09 | 2019-08-09 | Mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910736043.9A CN112350054B (en) | 2019-08-09 | 2019-08-09 | Mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112350054A CN112350054A (en) | 2021-02-09 |
| CN112350054B true CN112350054B (en) | 2022-12-13 |
Family
ID=74367019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910736043.9A Active CN112350054B (en) | 2019-08-09 | 2019-08-09 | Mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112350054B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113629395B (en) * | 2021-10-11 | 2022-01-25 | 深圳市中天迅通信技术股份有限公司 | Antenna system for mobile terminal and mobile terminal |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101809813A (en) * | 2007-08-30 | 2010-08-18 | 脉冲芬兰有限公司 | adjustable multiband antenna |
| CN103066375A (en) * | 2011-10-20 | 2013-04-24 | 宏达国际电子股份有限公司 | Handheld device and planar antenna thereof |
| CN105826679A (en) * | 2016-05-12 | 2016-08-03 | 惠州硕贝德无线科技股份有限公司 | Near-field antenna apparatus for three-segment type metal rear cover |
| CN108110423A (en) * | 2017-12-14 | 2018-06-01 | 广东欧珀移动通信有限公司 | Antenna tuning circuit, antenna assembly and mobile terminal |
| CN108336482A (en) * | 2018-01-25 | 2018-07-27 | 维沃移动通信有限公司 | A kind of antenna module, electronic equipment and antenna allocation method |
| CN108767499A (en) * | 2018-04-28 | 2018-11-06 | 华勤通讯技术有限公司 | Metal edge frame antenna and terminal device |
| CN109921178A (en) * | 2019-02-19 | 2019-06-21 | 深圳市和盈互联科技有限公司 | Mobile terminal antenna device |
-
2019
- 2019-08-09 CN CN201910736043.9A patent/CN112350054B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101809813A (en) * | 2007-08-30 | 2010-08-18 | 脉冲芬兰有限公司 | adjustable multiband antenna |
| CN103066375A (en) * | 2011-10-20 | 2013-04-24 | 宏达国际电子股份有限公司 | Handheld device and planar antenna thereof |
| CN105826679A (en) * | 2016-05-12 | 2016-08-03 | 惠州硕贝德无线科技股份有限公司 | Near-field antenna apparatus for three-segment type metal rear cover |
| CN108110423A (en) * | 2017-12-14 | 2018-06-01 | 广东欧珀移动通信有限公司 | Antenna tuning circuit, antenna assembly and mobile terminal |
| CN108336482A (en) * | 2018-01-25 | 2018-07-27 | 维沃移动通信有限公司 | A kind of antenna module, electronic equipment and antenna allocation method |
| CN108767499A (en) * | 2018-04-28 | 2018-11-06 | 华勤通讯技术有限公司 | Metal edge frame antenna and terminal device |
| CN109921178A (en) * | 2019-02-19 | 2019-06-21 | 深圳市和盈互联科技有限公司 | Mobile terminal antenna device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112350054A (en) | 2021-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2017405558B2 (en) | Antenna of mobile terminal and mobile terminal | |
| US9608337B2 (en) | Built-in antenna for electronic device | |
| EP2387105A2 (en) | Re-configurable built-in antenna for portable terminal | |
| EP3332448B1 (en) | Antenna arrangement for an electronic device | |
| US10374287B2 (en) | Antenna system with full metal back cover | |
| KR101718643B1 (en) | Tunable antenna with slot-based parasitic element | |
| EP2942834B1 (en) | Antenna apparatus and terminal device | |
| CN102469184B (en) | Mobile communication terminal | |
| CN103117452B (en) | A kind of novel LTE terminal antenna | |
| CN104064866A (en) | Antenna structure applied to mobile phone with metal rings and all-metal rear housing | |
| CN104143691A (en) | Antenna with tunable high band parasitic element | |
| KR101919840B1 (en) | Broad band tunable antenna device for portable terminal | |
| US20200106159A1 (en) | Antenna and wireless communication device using the same | |
| CN210350098U (en) | Mobile terminal | |
| CN105789833A (en) | Antenna device and mobile terminal | |
| CN113078449A (en) | Antenna structure and wireless communication device with same | |
| CN114069223A (en) | Antenna structure and electronic equipment with same | |
| US11942702B2 (en) | Wireless communication apparatus | |
| CN112350054B (en) | Mobile terminal | |
| US9054426B2 (en) | Radio apparatus and antenna device | |
| EP2375488B1 (en) | Planar antenna and handheld device | |
| CN113078445A (en) | Antenna structure and wireless communication device with same | |
| JP6865072B2 (en) | Antenna device and electronic device equipped with an antenna device | |
| EP1973193B1 (en) | Multi-band antenna device, parasitic element and communication device | |
| KR20070021947A (en) | An antenna arrangement for a cellular communication terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee after: Qingdao Hisense Mobile Communication Technology Co.,Ltd. Address before: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee before: HISENSE MOBILE COMMUNICATIONS TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |