CN113991291A

CN113991291A - Antenna system and mobile terminal

Info

Publication number: CN113991291A
Application number: CN202111226934.3A
Authority: CN
Inventors: 盖伊; 尤文杰; 阮勇
Original assignee: Chongqing Chuanyin Communication Technology Co ltd
Current assignee: Chongqing Chuanyin Communication Technology Co ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-01-28

Abstract

The application provides an antenna system and a mobile terminal, the antenna system comprises a feed source and at least two antenna radiation units, the feed source comprises a power divider and a phase shifter, the at least two antenna radiation units are connected with the phase shifter through the power divider, and the lengths of conducting arms corresponding to the at least two antenna radiation units are determined by working wavelength. The antenna system can still normally receive and transmit signals when being touched by fingers, and the working reliability is good.

Description

Antenna system and mobile terminal

Technical Field

The present application relates to the field of wireless communication technologies, and in particular, to an antenna system and a mobile terminal.

Background

In a mobile terminal, wireless internet connection and navigation through a location and localization service are indispensable functions of the mobile terminal, and an antenna needs to have good radiation performance in order to effectively pick up a signal.

When the device is held horizontally, hands may contact two ends of the device, which affects the radiation performance of the antenna, and to alleviate the effect, an antenna unit composed of multiple antennas is usually used in the mobile terminal, in which a switching antenna system is adopted to switch the antennas, the antennas that are not affected by the hands are activated, and the other antennas are turned off.

In the course of conceiving and implementing the present application, the inventors found that at least the following problems existed: although the antenna adopting the switching system can reduce the influence of hand contact on the antenna, the introduction of the switch in the antenna brings extra loss and the technology is complicated.

The foregoing description is provided for general background information and is not admitted to be prior art.

Disclosure of Invention

To solve the above technical problem, the present application provides an antenna system and a mobile terminal, where the antenna system can reduce the influence of finger touch on the mobile terminal to receive and transmit signals, and has low loss and simple structure.

In order to solve the above technical problem, in a first aspect, the present application provides an antenna system, including a feeding source and at least two antenna radiation units, where the feeding source includes a power divider and a phase shifter, the at least two antenna radiations are connected with the phase shifter through the power divider, and lengths of conductive arms corresponding to the at least two antenna radiation units are determined by an operating wavelength.

In a possible implementation manner, the at least two antenna radiation units include a first antenna radiation unit and a second antenna radiation unit, optionally, a first output port of the power divider is connected to the first antenna radiation unit, and a second output port of the power divider is connected to the second antenna radiation unit through a phase shifter.

In one possible implementation, at least two antenna radiating elements have the same shape.

In one possible implementation, the power divider includes an equiphase wilson power divider.

In one possible implementation, the antenna radiation unit has a feeding end, a first ground end and a second ground end, and the feeding end is located between the first ground end and the second ground end.

In one possible implementation, at least one of the following is included: the feed end is coupled with the feed source to form a feed coupling path; a first ground coupling path is formed between the first ground terminal and the ground plane; a second ground coupling path is formed between the second ground terminal and the ground plane; the first ground coupling path and the feed coupling path are coupled to form a first resonant mode; the second ground coupling path is coupled to the open end of the antenna radiating element to form a second resonant mode.

In one possible implementation, the resonant frequency of the first resonant mode is less than the resonant frequency of the second resonant mode.

In one possible implementation, each antenna radiating element includes a conductive arm, a first branch portion, and a second branch portion; optionally, the first branch portion is connected to a first end of the conductive arm, a second end of the conductive arm is an open end, and the second branch portion is connected between the first end and the second end of the conductive arm; and/or the feeding end and the second grounding end are arranged on the first branch part, and the first grounding end is arranged on the second branch part.

Optionally, the first branch portion and the second branch portion are located on the same side of the conductive arm.

In a possible implementation manner, the feeding end and the second grounding end are both located on a side of the first branch portion, which is away from the conductive arm, and the feeding end and the second grounding end are arranged at an interval.

In one possible implementation, the second ground terminal is directly connected to the ground plane.

In one possible implementation, the antenna further includes a first impedance component, and the first impedance component is connected between the first ground terminal and the ground plane.

Optionally, the first impedance component comprises at least two reactive devices connected in series with each other.

In a possible implementation manner, the reactive device in the first impedance component includes a first capacitor, a first inductor, and a second capacitor, and the first capacitor, the first inductor, and the second capacitor are sequentially connected in series between the first ground terminal and the ground plane.

In a possible implementation manner, the antenna further comprises a second impedance component, and the second impedance component is connected between the feeding end and the feeding source.

In one possible implementation, the second impedance component includes a third capacitor, a fourth capacitor, and a second inductor; optionally, the second inductor and the third capacitor are connected in series between the feeding end and the feeding source, the first end of the fourth capacitor is connected between the second inductor and the third capacitor, and the second end of the fourth capacitor is connected to the ground plane.

In a second aspect, the present application further provides a mobile terminal comprising a housing and the antenna system of the first aspect.

Optionally, the mobile terminal further comprises at least one housing.

Optionally, the antenna system is disposed at a side edge of the housing.

In one possible implementation, different antenna radiation units in the antenna system are arranged on two opposite side edges of the housing.

In one possible implementation, the open ends of the antenna radiating elements point in the same direction.

In one possible implementation manner, the antenna radiation units in the antenna system are all located on the same side edge of the housing, and there is a space between different antenna radiation units.

In one possible implementation, the open ends of the antenna radiating elements point away from each other.

In one possible implementation manner, the antenna radiation units in the antenna system are respectively arranged at two adjacent side edges of the housing.

The antenna system and the mobile terminal provided by the application comprise a feed source and at least two antenna radiation units, wherein the feed source comprises a power divider and a phase shifter, the at least two antenna radiation units are connected with the phase shifter through the power divider, and the lengths of the conductive arms corresponding to the at least two antenna radiation units are determined according to the working wavelength. Like this, a feeder is shared to at least two antenna radiating element, and at least two antenna radiating element can receive and dispatch wireless signal simultaneously, and when one of them antenna radiating element can't normally receive and dispatch the signal because the finger touching, other antenna radiating element still can normally receive and dispatch the signal, and consequently, antenna system's signal transceiver function receives the influence of finger touching less. The antenna system is arranged on the shell of the mobile terminal, so that the influence of finger touch on the receiving and sending signals of the mobile terminal can be reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of an antenna system according to a first embodiment of the present application;

fig. 2 is a schematic structural diagram of an antenna radiation unit in an antenna system according to a first embodiment of the present application;

fig. 3 is a schematic structural diagram of a power divider in an antenna system according to a first embodiment of the present application;

fig. 4 is a power splitting output phase diagram of a power splitter in an antenna system according to a first embodiment of the present application;

fig. 5 is a bandwidth response diagram of an antenna system according to a first embodiment of the present application;

fig. 6 is a radiation efficiency diagram of an antenna system according to a first embodiment of the present application;

fig. 7 is a schematic structural diagram of a mobile terminal according to a second embodiment of the present application;

fig. 8 is a usage state diagram of a mobile terminal according to a second embodiment of the present application;

fig. 9 is a schematic structural diagram of a mobile terminal according to a third embodiment of the present application;

fig. 10 is a usage state diagram of a mobile terminal according to a third embodiment of the present application;

fig. 11 is a schematic structural diagram of a mobile terminal according to a fourth embodiment of the present application;

fig. 12 is a usage state diagram of a mobile terminal according to a fourth embodiment of the present application;

fig. 13 is another usage state diagram of a mobile terminal according to a fourth embodiment of the present application;

fig. 14 is a schematic hardware structure diagram of a mobile terminal according to an embodiment of the present application.

Description of reference numerals:

1-an antenna system;

2-an antenna radiating element; 2 a-a first antenna radiating element; 2 b-a second antenna radiating element; 21-a feeding end; 22-first ground; 23-a second ground; 25-a conductive arm; 26-a first branch; 27-a second branch portion; 28-a first impedance component; 29-a second impedance component; 251-a connection end; 252-open end; 281-first capacitance; 282-a first inductance; 283-a second capacitance; 291-third capacitance; 292-a fourth capacitance; 293-second inductance;

3-a power supply; 31-a power divider; 32-a phase shifter; 311-a signal source; 312-resistance; 313-a fifth capacitance; 314-sixth capacitance; 315-third inductance; 316-fourth inductance; 317-fifth inductance; 318-sixth inductance;

100-a mobile terminal; 1001-housing.

The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings. With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the recitation of an element by the phrase "comprising an … …" does not exclude the presence of additional like elements in the process, method, article, or apparatus that comprises the element, and optionally, identically named components, features, and elements in different embodiments of the present application may have different meanings, as may be determined by their interpretation in the embodiment or by their further context within the embodiment.

It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope herein. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context. Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, species, and/or groups thereof. The terms "or," "and/or," "including at least one of the following," and the like, as used herein, are to be construed as inclusive or mean any one or any combination. For example, "includes at least one of: A. b, C "means" any of the following: a; b; c; a and B; a and C; b and C; a and B and C ", again for example," A, B or C "or" A, B and/or C "means" any of the following: a; b; c; a and B; a and C; b and C; a and B and C'. An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for the convenience of description of the present application, and have no specific meaning in themselves. Thus, "module", "component" or "unit" may be used mixedly.

The mobile terminal may be implemented in various forms. For example, the mobile terminal described in the present application may include mobile terminals such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and fixed terminals such as a Digital TV, a desktop computer, and the like.

The following description will be given taking a mobile terminal as an example, and it will be understood by those skilled in the art that the configuration according to the embodiment of the present application can be applied to a fixed type terminal in addition to elements particularly used for mobile purposes.

First embodiment

When the mobile terminal is held horizontally, hands may contact two ends of the mobile terminal to affect the radiation performance of the antenna, and in order to mitigate the effect, an antenna unit composed of multiple antennas is used in the mobile terminal nowadays, a switching antenna system is adopted in the antenna unit to switch the antenna, the antenna which is not affected by the hands is activated, and other antennas are turned off, so that the switching loss of the antenna system is increased. Or an antenna diversity technology is adopted, namely, signals are transmitted in a dispersing way and then received signals are processed in a concentrating way, and the antenna diversity technology requires that a transmitting end or a receiving end is provided with a plurality of antennas. Antenna diversity techniques are difficult to implement and increase the design cost of the antenna.

Based on this, the embodiment of the application provides an antenna system, can reduce the influence of finger touch on mobile terminal wireless signal receiving and dispatching, and simple structure, loss are lower.

Fig. 1 is a schematic structural diagram of an antenna system according to a first embodiment of the present application; fig. 2 is a schematic structural diagram of an antenna radiation unit in an antenna system according to a first embodiment of the present application; fig. 3 is a schematic structural diagram of a power divider in an antenna system according to a first embodiment of the present application.

Referring to fig. 1 to 3, an antenna system 1 provided in this embodiment includes a feeding source 3 and at least two antenna radiation units 2, where the feeding source 3 includes a power divider 31 and a phase shifter 32, the at least two antenna radiation units 2 are connected through the power divider 31 and the phase shifter 32, and lengths of conductive arms 25 corresponding to the at least two antenna radiation units 2 are determined by an operating wavelength.

In the present embodiment, the feeding source 3 composed of the power divider 31 and the phase shifter 32 is beneficial to improve the signal-to-noise ratio of the antenna system 1, and at least two antenna radiation units 2 share one feeding source 3. The power divider 31 may divide one input signal power of the power supply 3 into multiple paths and output the multiple paths to different antenna radiation units 2, and meanwhile, the power divider 31 may combine multiple paths of signal power of the antenna radiation units 2 into one path and output the one path of signal power to the power divider 31. The phase shifter 32 may change the phase of the signal such that the signals of at least two antenna radiating elements 2 are either in-phase input or in-phase output.

Therefore, at least two antenna radiation units 2 can simultaneously transmit and receive signals, when the antenna system 1 is touched by a finger, one of the antenna radiation units 2 is affected, and the other antenna radiation units 2 can still normally transmit and receive signals, so that the influence of the finger touch on the antenna system 1 is reduced. When the antenna system 1 is not affected by finger touch, the radiation performance of at least two antenna radiation units 2 is not reduced, and in the transmitting and receiving mode, the signal power phases from at least two antenna radiation units 2 are added, so that the radiation performance of the antenna system 1 is improved. Alternatively, the lengths of the conductive arms 25 corresponding to the two antenna radiation units 2 may be determined according to the operating wavelength, so as to improve the signal transmission and reception efficiency of the antenna system 1.

Alternatively, the power divider 31 may be a wilson power divider. The power divider 31 may include a signal source 311, a resistor 312, a fifth capacitor 313, a sixth capacitor 314, a third inductor 315, a fourth inductor 316, a fifth inductor 317, and a sixth inductor 318.

Optionally, the at least two antenna radiating elements 2 comprise a first antenna radiating element 2a and a second antenna radiating element 2 b. Optionally, a first output port of the power divider 31 is connected to the first antenna radiation element 2a, and a second output port of the power divider is connected to the second antenna radiation element 2b through the phase shifter 32.

In the present embodiment, the antenna system 1 is explained as having two antenna radiation elements 2, the two antenna radiation elements 2 include a first antenna radiation element 2a and a second antenna radiation element 2b, and the first antenna radiation element 2a and the second antenna radiation element 2b share one feed source 3. The power divider 31 may divide one input signal power of the power supply 3 into two paths to be output to the first antenna radiating element 2a and the second antenna radiating element 2b, respectively. Meanwhile, the power divider 31 may also combine two signal powers of the first antenna radiating unit 2a and the second antenna radiating unit 2b into one signal to output the one signal to the power divider 31, and the phase shifter 32 may change the phase of the signal, so that the signals of the first antenna radiating unit 2a and the second antenna radiating unit 2b are input in phase or output in phase.

Alternatively, the phase shifter 32 may be adjusted according to the distance from the first and second

antenna radiation elements

2a and 2b to the feeding source 3. Thereby, the first antenna radiation element 2a and the second antenna radiation element 2b can simultaneously transmit and receive signals. When the antenna system 1 is touched by a finger, one of the first antenna radiating element 2a and the second antenna radiating element 2b is affected, and the other of the first antenna radiating element 2a and the second antenna radiating element 2b can normally transmit and receive signals, so as to reduce the influence of the finger touch on the antenna system 1. When the antenna system 1 is not affected by the finger touch, the radiation performance in the first antenna radiation element 2a and the second antenna radiation element 2b is not degraded, and in the transmitting and receiving mode, the signal power from the first antenna radiation element 2a and the second antenna radiation element 2b is added in phase, thereby improving the radiation performance of the antenna system 1. Alternatively, the length of the conductive arm 25 in the first antenna radiating element 2a and the second antenna radiating element 2b may be less than a quarter of the operating wavelength, so that the signal transmitting and receiving efficiency of the first antenna radiating element 2a and the second antenna radiating element 2b is high.

Optionally, at least two antenna radiating elements 2 have the same shape. In this way, the resonant frequencies excited by the first antenna radiation element 2a and the second antenna radiation element 2b are the same, so that the first antenna radiation element 2a and the second antenna radiation element 2b transmit and receive signals simultaneously.

Optionally, the antenna radiating element 2 has a feeding terminal 21, a first ground terminal 22 and a second ground terminal 23, the feeding terminal 21 being located between the first ground terminal 22 and the second ground terminal 23. The antenna radiating element 2 thus has two ground points and one feed point. Two grounding coupling paths are formed between the two grounding points and the grounding plane respectively, and one feed point is coupled with the feed source 3 to form one feed coupling path.

Optionally, the feeding terminal 21 and the feeding source 3 are coupled to form a feeding coupling path. A first ground coupling path is formed between the first ground terminal 22 and the ground plane and a second ground coupling path is formed between the second ground terminal 23 and the ground plane.

Optionally, the first ground coupling path and the feed coupling path are coupled to form a first resonant mode; the second ground coupling path is coupled to the open end of the antenna radiating element 2 to form a second resonant mode.

Thus, the antenna radiation unit 2 can excite two resonant modes, and it can be understood that the antenna radiation unit 2 can excite the first resonant mode at a frequency point where a Global Positioning System (GPS) exists to perform GPS communication. Meanwhile, the antenna radiation unit 2 may excite the second resonance mode at a Wireless-Fidelity (WIFI) frequency band to perform WIFI communication, and upper hemispherical gains of the antenna radiation unit 2 at the GPS frequency band and the WIFI frequency band are both higher. Optionally, the frequency of the first resonant mode is less than the frequency of the second resonant mode.

Optionally, each antenna radiating element 2 comprises a conductive arm 25, a first branch portion 26 and a second branch portion 27; the first branch portion 26 is connected to a first end of the conductive arm 25, a second end of the conductive arm 25 is an open end, and the second branch portion 27 is connected between the first end and the second end of the conductive arm 25. Optionally, the first branch portion 26 and the second branch portion 27 are located on the same side of the conductive arm 25.

Alternatively, the feeding terminal 21 and the second ground terminal 23 are both disposed at the first branch portion 26, and the first ground terminal 22 is disposed at the second branch portion 27.

Optionally, the feeding terminal 21 and the second grounding terminal 23 are both located on a side of the first branch portion 26 facing away from the conductive arm 25, and the feeding terminal 21 and the second grounding terminal 23 are spaced apart.

Alternatively, the side of the first branch portion 26 close to the conductive arm 25 is connected to the connection end 251 of the conductive arm 25, and the side of the first branch portion 26 away from the conductive arm 25 is connected to the feeding end 21 and the second grounding end 23. Thereby, the feeding terminal 21 and the second ground terminal 23 may be connected to the conductive arm 25 through the first branch portion 26. The second branch portion 27 is connected between the connection end 251 and the open end 252, and the first ground terminal 22 is connected to the conductive arm 25 through the second branch portion 27. Alternatively, the first branch portion 26 and the second branch portion 27 are located on the same side of the conductive arm 25, which can reduce the height of the antenna radiation element 2, and thus the structural size of the antenna radiation element 2 can be smaller.

Optionally, the antenna system 1 further comprises a first impedance component 28, the first impedance component 28 being connected between the first ground terminal 22 and the ground plane, the first impedance component 28 comprising at least two reactive devices connected in series with each other for adjusting the impedance of the antenna system 1.

Optionally, the reactive device in the first impedance component 28 includes a first capacitor 281, a first inductor 282, and a second capacitor 283, and the first capacitor 281, the first inductor 282, and the second capacitor 283 are connected in series between the first ground terminal 22 and the ground plane. Optionally, the first capacitor 281, the first inductor 282 and the second capacitor 283 are sequentially connected in series between the first ground terminal 22 and the ground plane. Alternatively, the first capacitor 281 may be selected to have a smaller capacitance to isolate the electric field of the first resonant mode, and the first inductor 282 and the second capacitor 283 form a low-pass filtering path to achieve impedance matching optimization and reduce the frequency of the first resonant mode.

Optionally, the antenna system 1 further comprises a second impedance component 29, and the second impedance component 29 is connected between the feeding end 21 and the feeding source 3 to form a feeding coupling path.

Optionally, the second impedance component 29 comprises a third capacitor 291, a fourth capacitor 292 and a second inductor 293. The second inductor 293 and the third capacitor 291 are sequentially connected in series between the feeding terminal 21 and the feeding source 3 to form a feeding coupling path, and the inductance value of the second inductor 293 and the capacitance value of the third capacitor 291 can be optimized to reduce the frequency of the first resonant mode. A first end of the fourth capacitor 292 is connected between the second inductor 293 and the third capacitor 291, a second end of the fourth capacitor 292 is connected to the ground plane, and the fourth capacitor 292 is used for tuning and matching the antenna radiating element 2.

Fig. 4 is a power splitting output phase diagram of a power splitter in an antenna system according to a first embodiment of the present application; fig. 5 is a bandwidth response diagram of an antenna system according to a first embodiment of the present application; fig. 6 is a radiation efficiency diagram of an antenna system according to a first embodiment of the present application.

Simulation analysis is performed on the antenna system 1 provided in the embodiment of the present application, wherein an ordinate in fig. 4 represents a power splitting output phase of the power splitter, and an abscissa represents a frequency range of the antenna system. Referring to fig. 4, in the case that the return loss is greater than 3 db, the two signal output phases of the feed source 3 of the antenna system 1 are the same, so that the two antenna radiation units 2 of the antenna system 1 can simultaneously transmit and receive signals. The ordinate in fig. 5 represents the return loss of the antenna system, the abscissa represents the frequency range of the antenna system, the ordinate in fig. 6 represents the return loss of the antenna system, and the abscissa represents the frequency range of the antenna system. Referring to fig. 5 and 6, comparing the antenna system 1 having one antenna radiation element 2 with the antenna system 1 having at least two antenna radiation elements 2, the bandwidth response of the antenna system 1 having one antenna radiation element 2 and the antenna system 1 having at least two antenna radiation elements 2 is substantially the same. It is noted that in the antenna system 1, as long as at least one antenna radiation unit 2 is not affected by finger touch, the antenna system 1 can still work in the GPS frequency band and the WIFI frequency band at the same time, the upper hemisphere gains of the antenna system 1 in the GPS frequency band and the WIFI frequency band are both high, and the radiation efficiency of the antenna system 1 having at least two antenna radiation units 2 is relatively high.

Second embodiment

Fig. 7 is a schematic structural diagram of a mobile terminal according to a second embodiment of the present application; fig. 8 is a usage state diagram of a mobile terminal according to a second embodiment of the present application.

Referring to fig. 7, an embodiment of the present application provides a mobile terminal 100, which includes a housing 1001 and an antenna system 1, where the antenna system 1 is disposed at a side edge of the housing 1001. Optionally, the antenna system 1 is the antenna system 1 provided in the first embodiment, and the structure, the working principle, and the main functions of the antenna system 1 have been described in detail in the first embodiment, and are not described again here.

Alternatively, different antenna radiation units 2 in the antenna system 1 are disposed at opposite side edges of the housing 1001.

Alternatively, the open ends 252 of the antenna radiation units 2 may point in the same direction or point away from each other, which is not limited in this embodiment.

Referring to fig. 8, when the mobile terminal 100 is held horizontally, the second antenna radiating element 2b of the antenna system 1 is affected by finger touch, the first antenna radiating element 2a is less affected, and overall, the signal transceiving function of the antenna system 1 is less affected. Accordingly, the mobile terminal 100 can transmit and receive signals without being substantially affected by the finger touch. The antenna system 1 provided by the embodiment of the application selects the antenna radiation unit 2 which is less affected by manual touch, and the insertion loss of the corresponding antenna system 1 is lower.

Third embodiment

Fig. 9 is a schematic structural diagram of a mobile terminal according to a third embodiment of the present application; fig. 10 is a usage state diagram of a mobile terminal according to a third embodiment of the present application.

Referring to fig. 9, an embodiment of the present application provides a mobile terminal 100, which includes a housing 1001 and an antenna system 1, where the antenna system 1 is disposed at a side edge of the housing 1001. Optionally, the antenna system 1 is the antenna system 1 provided in the first embodiment, and the structure, the working principle, and the main functions of the antenna system 1 have been described in detail in the first embodiment, and are not described again here.

Optionally, at least two radiating elements 2 in the antenna system 1 are disposed on the same lateral side edge of the housing 1001, and there is a gap between different antenna radiating elements 2.

It should be understood that the open ends 252 of the antenna radiation elements 2 may point in the same direction or point away from each other, which is not limited in this embodiment.

Referring to fig. 10, when the mobile terminal 100 is held horizontally, the second antenna radiating element 2b of the antenna system 1 is affected by finger touch, the first antenna radiating element 2a is less affected, and overall, the signal transceiving function of the antenna system 1 is less affected. Accordingly, the mobile terminal 100 can transmit and receive signals without being substantially affected by the finger touch. The antenna system 1 provided by the embodiment of the application selects the antenna radiation unit 2 which is less affected by manual touch, and the insertion loss of the corresponding antenna system 1 is lower.

Fourth embodiment

Fig. 11 is a schematic structural diagram of a mobile terminal according to a fourth embodiment of the present application; fig. 12 is a usage state diagram of a mobile terminal according to a fourth embodiment of the present application; fig. 13 is another usage state diagram of a mobile terminal according to a fourth embodiment of the present application.

Referring to fig. 11, an embodiment of the present application provides a mobile terminal 100, which includes a housing 1001 and an antenna system 1, where the antenna system 1 is disposed at a side edge of the housing 1001. Optionally, the antenna system 1 is the antenna system 1 provided in the first embodiment, and the structure, the working principle, and the main functions of the antenna system 1 have been described in detail in the first embodiment, and are not described again here.

Alternatively, the antenna radiation units 2 in the antenna system 1 are respectively disposed at two adjacent side edges of the housing 1001.

Referring to fig. 12, when the mobile terminal 100 is held horizontally, the second antenna radiating element 2b of the antenna system 1 is affected by finger touch, the first antenna radiating element 2a is less affected, and overall, the signal transceiving function of the antenna system 1 is less affected. Accordingly, the mobile terminal 100 can transmit and receive signals without being substantially affected by the finger touch.

Referring to fig. 13, when the mobile terminal 100 is held horizontally, the second antenna radiating element 2b of the antenna system 1 is affected by finger touch, the first antenna radiating element 2a is less affected, and overall, the signal transceiving function of the antenna system 1 is less affected. Accordingly, the mobile terminal 100 can transmit and receive signals without being substantially affected by the finger touch.

The antenna system 1 provided by the embodiment of the application selects the antenna radiation unit 2 which is less affected by manual touch, and the insertion loss of the corresponding antenna system 1 is lower.

Referring to fig. 14, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present application, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture illustrated in fig. 14 is not intended to be limiting of mobile terminals, and that a mobile terminal may include more or fewer components than those illustrated, or some components may be combined, or a different arrangement of components.

The following describes the components of the mobile terminal in detail with reference to fig. 14:

the radio frequency unit 101 may be configured to receive and transmit information or receive and transmit signals during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex-Long Term Evolution), TDD-LTE (Time Division duplex-Long Term Evolution, Time Division Long Term Evolution), 5G, and so on.

WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 14 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.

The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor that may adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that may turn off the display panel 1061 and/or the backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Alternatively, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. Optionally, the touch detection device detects a touch orientation of a user, detects a signal caused by a touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. Optionally, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited thereto.

Alternatively, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although in fig. 14, the touch panel 1071 and the display panel 1061 are two independent components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.

The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a program storage area and a data storage area, and optionally, the program storage area may store an operating system, an application program (such as a sound playing function, an image playing function, and the like) required by at least one function, and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor, optionally, the application processor mainly handles operating systems, user interfaces, application programs, etc., and the modem processor mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.

Although not shown in fig. 14, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.

The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.

The units in the device in the embodiment of the application can be merged, divided and deleted according to actual needs.

In the present application, the same or similar term concepts, technical solutions and/or application scenario descriptions will be generally described only in detail at the first occurrence, and when the description is repeated later, the detailed description will not be repeated in general for brevity, and when understanding the technical solutions and the like of the present application, reference may be made to the related detailed description before the description for the same or similar term concepts, technical solutions and/or application scenario descriptions and the like which are not described in detail later.

In the present application, each embodiment is described with emphasis, and reference may be made to the description of other embodiments for parts that are not described or illustrated in any embodiment.

The technical features of the technical solution of the present application may be arbitrarily combined, and for brevity of description, all possible combinations of the technical features in the embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the scope of the present application should be considered as being described in the present application.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.

Claims

1. An antenna system is characterized by comprising a feed source and at least two antenna radiation units, wherein the feed source comprises a power divider and a phase shifter, the at least two antenna radiation units are connected with the phase shifter through the power divider, and the lengths of conducting arms corresponding to the at least two antenna radiation units are determined by working wavelength.

2. The antenna system of claim 1, wherein the at least two antenna radiating elements comprise a first antenna radiating element and a second antenna radiating element, wherein:

a first output port of the power divider is connected to the first antenna radiation unit, and a second output port of the power divider is connected to the second antenna radiation unit through the phase shifter.

3. The antenna system of claim 1, wherein each of the antenna radiating elements has a feed terminal, a first ground terminal, and a second ground terminal, the feed terminal being located between the first ground terminal and the second ground terminal.

4. The antenna system of claim 3, comprising at least one of:

the feed end is coupled with the feed source to form a feed coupling path;

a first ground coupling path is formed between the first ground terminal and the ground plane;

a second ground coupling path is formed between the second ground terminal and the ground plane;

the first ground coupling path and the feed coupling path are coupled to form a first resonant mode;

the second ground coupling path is coupled to an open end of the antenna radiating element to form a second resonant mode.

5. The antenna system of claim 4, wherein each of the antenna radiating elements comprises a conductive arm, a first branch portion, and a second branch portion, wherein:

the first branch part is connected to the first end of the conductive arm, the second end of the conductive arm is an open end, and the second branch part is connected between the first end and the second end of the conductive arm; and/or the presence of a gas in the gas,

the feeding end and the second grounding end are both arranged on the first branch part, and the first grounding end is arranged on the second branch part.

6. The antenna system of claim 5, wherein the feeding terminal and the second ground terminal are both located on a side of the first branch portion facing away from the conductive arm, and the feeding terminal and the second ground terminal are spaced apart.

7. The antenna system of any one of claims 4 to 6, further comprising a first impedance component connected between the first ground and the ground plane.

8. The antenna system of claim 7, wherein the reactive device in the first impedance component comprises a first capacitor, a first inductor, and a second capacitor, the first inductor, and the second capacitor being connected in series between the first ground and the ground plane.

9. The antenna system according to any of claims 4-6, characterized in that the antenna system further comprises a second impedance component connected between the feeding end and the feeding source.

10. The antenna system of claim 9, wherein the second impedance component comprises a third capacitance, a fourth capacitance, and a second inductance; wherein:

the second inductor and the third capacitor are sequentially connected in series between the feed end and the feed source, the first end of the fourth capacitor is connected between the second inductor and the third capacitor, and the second end of the fourth capacitor is connected with the ground plane.

11. A mobile terminal, characterized in that it comprises an antenna system according to any one of claims 1 to 10.