KR20220148538A - Broadband antenna module and mobile terminal having the same - Google Patents

Abstract

The present invention relates to a 5G wireless communication antenna, more specifically, a broadband antenna module capable of, in a situation where a communication technique based on an advanced technique and an existing technique coexist, performing wireless communication by the two techniques, and a mobile terminal including the same. A broadband antenna includes: a substrate including a grounding part and a feeding part; and an antenna element formed on the substrate. Accordingly, one antenna element can transmit and receive all broadband signals ranging from 800 MHz to 5000 MHz, thereby reducing the number of antennas.

Description

Broadband antenna module and mobile terminal having the same

The present invention relates to a broadband antenna module, and more specifically, an antenna module capable of performing both wireless communication according to both technologies in a situation in which an advanced technology and a communication technology according to the existing technology coexist, and a mobile terminal having the same. it's about

In the process of discussing the 5G structure at the general meeting of the 3GPP standards body, it is said that it is necessary to research and create standard technologies that can create new services and the demand to satisfy the telecommunication operators of countries with rapid commercialization demand before 2020. A request was made.

In the process of discussing these two conflicting demands, various structural candidates were discussed, and as a result of the discussion, the new 5G standard NR (New Radio) technology was adopted as one of the measures for operators who want to be commercialized quickly, and the existing 4G standard 3GPP LTE (Long A non-standalone (NSA) structure that provides LTE coverage and NR coverage at the same time by using it with the Term Evolution) system was introduced.

Under the current NSA structure, the 5G service is a method of changing the data transmission path (ie, session) of the terminal in order to improve the data processing speed between the terminal and the network based on the existing 4G service. For example, a terminal supporting 5G (hereinafter, referred to as a “5G terminal” for convenience) communicates with a 5G base station (gNB) if it is within NR coverage, and communicates with a 4G base station (eNB) if it is within LTE coverage. Of course, a path for a voice call, that is, an IP Multi-Media Subsystem (IMS) session, maintains a 4G base station regardless of location to improve call quality.

After all, since the 5G terminal must be able to use not only the 5G service but also the 4G service, the number of antennas inevitably increases. In addition, it is necessary to redesign antennas capable of wireless communication in various frequency bands depending on the type of terminal, increasing R&D costs and making it difficult for existing LTE developers to enter the 5G antenna market right away.

The present invention relates to a broadband antenna module, and an object of the present invention is to provide an antenna module capable of performing both LTE communication and wireless communication according to NR technology.

According to an aspect of the present invention, a substrate including a ground unit and a power feeding unit; and an antenna element formed on the substrate, wherein the antenna element includes: a feeding point connected to the feeding unit; a first radiating portion extending in a first direction from the feeding point; and a second radiating part extending in a second direction from the feeding point to form a V-shape with the first radiating part and forming a V-shape with the first radiating part.

The width of the first radiating part and the second radiating part may be increased as the distance from the feeding point increases.

A length of the first radiating part may be different from a length of the second radiating part.

The second radiating part may further include a horizontal part parallel to the substrate at a position spaced apart from the substrate by a first distance.

The second radiating part may further include a ground line bent toward the substrate as an end of the horizontal part.

The second radiating unit may further include a ground line bent toward the substrate.

It may include a third radiation portion extending from the second radiation portion.

The third radiation part may include a horizontal part parallel to the substrate and a vertical part bent toward the substrate from an end of the horizontal part.

At least one insulating pillar positioned between the third radiation part and the substrate may be further included.

The antenna element may be mounted on the substrate.

The first radiating part and the second radiating part may be formed to face each other.

It may further include at least one millimeter wave device mounted on the substrate, wherein the antenna device and the millimeter wave device do not overlap each other.

According to another aspect of the present invention, a substrate including a ground unit and a power feeding unit; and a plurality of antenna elements formed on the substrate, spaced apart from each other and disposed orthogonally, wherein the antenna elements include: a feeding point connected to the feeding unit; a first radiating part extending in a first direction from the feeding point; and a second radiating part extending in a second direction from the feeding point to form a V-shape with the first radiating part.

The broadband antenna module of the present invention can transmit and receive all wideband signals ranging from 800 MHz to 5000 MHz with one antenna element, thereby reducing the number of antennas.

In addition, if the broadband antenna module is used, it is not necessary to design an antenna every time depending on the terminal model, thereby shortening the R&D period and reducing costs.

Further scope of applicability of the present invention will become apparent from the following detailed description. However, it should be understood that the detailed description and specific embodiments such as preferred embodiments of the present invention are given by way of illustration only, since various changes and modifications within the spirit and scope of the present invention may be clearly understood by those skilled in the art.

1 is a diagram for explaining the structure of a mobile communication network according to an embodiment.
2 and 3A are diagrams illustrating a broadband antenna module according to an embodiment.
FIG. 3B is a graph illustrating a reflection coefficient of the broadband antenna module according to the embodiment of FIG. 3A .
4A to 8C are graphs illustrating a broadband antenna module and reflection coefficients according to another embodiment.
9A is a diagram illustrating an embodiment of a MIMO antenna.
9B is a graph illustrating a reflection coefficient of the broadband antenna module of FIG. 9A.
10A and 10B are plan views illustrating a broadband antenna module according to another embodiment.

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components are assigned the same reference numbers regardless of reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "part" for components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have distinct meanings or roles by themselves.

In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed herein is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention , should be understood to include equivalents or substitutes.

Terms including ordinal numbers such as first, second, etc. may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. When a component is referred to as being “connected” or “connected” to another component, it may be directly connected or connected to the other component, but it is understood that other components may exist in between. it should be

On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprises” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that this does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

The mobile communication network according to the present invention may be configured based on the 4G standard 3GPP Long Term Evolution (LTE) and/or the 5G standard NR (New Radio), but this is only one embodiment, and the 4G standard and 5G It may be configured to interoperate with devices of a network other than the network element defined in the standard - for example, an IoT network.

1 is a diagram for explaining the structure of a mobile communication network according to an embodiment, and in particular, shows the structure of a Non Standalone (NSA) system based on the 3GPP standard.

The NSA system is a system that provides both LTE coverage and NR coverage by using NR (New Radio) technology together with the existing LTE system, and is distinguished from the Stand Alone (SA) system that provides only NR coverage.

A base station supporting the use of 5G NR can be defined as gNB and en-gNB. The former is used only in a Stand Alone (SA) system that provides only NR coverage, and the latter is a base station used in a Non Standalone (NSA) system.

gNB is a next-generation base station that supports NR technology and interworking with 5G Core, and en-gNB is a new type of base station that supports NR technology and interworking with 5G Core while interworking with EPC, the core of LTE system, and eNB, which is a base station. The eNB is a base station used in an LTE system that supports interworking between LTE technology and EPC (Enhanced Packet Core).

A technology in which a terminal supporting one or more RX/TX simultaneously uses resources controlled by one or more base stations is called Dual Connectivity (DC). The 5G NSA structure is based on the DC technology defined by the 3GPP standard organization.

Referring to FIG. 1 , a mobile communication network according to an embodiment includes UE (User Equipment, 10), eNB (Evolved Node B, 20), S-GW (Serving Gateway, 30), P-GW (Packet Data Network Gateway, 40) ), MME (Mobility Management Entity, 50), HSS (Home Subscriber Server, 60), PDN (Packet Data Network, 90) may be configured to include.

The UE 10 is a user terminal conforming to LTE and/or NR standards, and may be connected to the eNB 20 through an LTE Uu interface. Here, the LTE Uu interface is a wireless interface, and a control plane for transmitting and receiving control messages and a user plane for providing user data are defined.

The UE 10 may also work with gNB (not shown), which is a base station supporting the NR standard, or en-gNB 22, which is a base station that supports both LTE and NR standards.

The eNB 20 is a device that provides a radio interface to the UE 10, and provides radio resource management functions such as radio bearer control, radio admission control, dynamic radio resource allocation, load balancing, and inter-cell interference control. do.

The S-GW 30 is an end of an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and an Evolved Packet Core (EPC), and an anchoring point during handover between eNBs 20 and handover between 3GPP systems. do. Here, the E-UTRAN is composed of at least one eNB 20 , and the EPC is composed of the S-GW 30 , the P-GW 40 and the MME 50 .

The P-GW 40 connects the UE 10 with an external Packet Data Network (PDN) 100 and performs a packet filtering function. In addition, the P-GW 40 allocates an IP address to the UE 10 and operates as a mobility anchoring point during handover between a 3GPP system and a non-3GPP system. In particular, the P-GW 40 receives the Policy and Charging Control (PCC) rule from the PCRF, applies it to the corresponding service flow, and provides a charging function for each UE 10/SDF (Service Date Flow).

The MME 50 provides an access control function for network connection of the UE 10, a network resource allocation function, a tracking function, a paging function, a roaming function, a handover function, etc. can do. The MME 50 may manage a plurality of eNBs 20 and select a gateway by performing predetermined signaling for handover to an existing 2G/3G network.

In addition, the MME 50 may interwork with the HSS 60 to perform authentication and security setting procedures for the connected UE 10 , and may manage location information for idle terminals. The MME 50 may obtain an authentication vector from the HSS 60 and perform mutual authentication with the UE 10 using the authentication vector. When the authentication procedure is completed, the MME 50 may set a security key for security between the UE 10 and the MME 50 .

The HSS 60 is a database in which a user profile (subscriber profile) is stored, and provides user authentication information and a user profile to the MME 50 .

Uu provides a control plane and a user plane as a radio interface between the UE 10 and the eNB 20 .

S1-U is an interface between the eNB 20 and the S-GW 30, and provides a user plane. In this case, GTP tunneling per bearer is provided.

S5 is an interface between the S-GW 30 and the P-GW 40, and provides a control plane and a user plane. In this case, the user plane provides GTP tunneling for each bearer, and the control plane provides GTP tunnel management.

The SGi defines a user plane and a control plane as an interface between the P-GW 40 and the PDN 90 . In the user plane, an IETF-based IP packet forwarding protocol is used, and in the control plane, protocols such as DHCP and RADIUS/Diameter are used.

S11 is an interface between the MME 50 and the S-GW 30 in which a control plane is defined, and GTP tunneling is provided per bearer.

X2 is an interface between two eNBs 20 or two base stations (eNB 20 and En-gNB 22) supporting different RATs (Radio Access Technology), and provides a control plane and a user plane. In the control plane, the X2-AP protocol is used, and in the user plane, GPRS Tunneling Protocol (GTP) tunneling is provided per bearer for data forwarding during X2 handover.

S6a provides a control plane as an interface between the HSS 60 and the MME 50, and is used to exchange UE subscription information and authentication information.

2 is a diagram illustrating a broadband antenna module 100 according to an embodiment. The broadband antenna module 100 of the present invention includes a substrate 120 and an antenna element 110 mounted on the substrate 120 . The substrate 120 includes an insulating layer and circuit wiring formed thereon and refers to a printed circuit board 120 made of a plurality of layers, a power feeding part 121 for feeding an antenna, and a grounding part made of a large-area conductive material. (122).

The power supply unit 121 receives power from the power supply unit and supplies an electrical signal to be transmitted to the antenna element 110 . The ground unit 122 is a plane in which a potential value is defined as 0 on a circuit, and when the antenna element 110 is connected to the ground unit 122 , stability of antenna signal transmission may be secured.

The antenna element 110 seated on the substrate 120 including the power feeding unit 121 and the grounding unit 122 includes a conductive material, and may be implemented by bending a metal plate or by plating it on a plastic frame.

The antenna element 110 of this embodiment has a feeding point 111 connected to the feeding unit 121 , a first radiating part 112 extending in a V shape from the feeding point 111 , and a second radiating part 113 . , a ground line 116 connecting the second radiating part 113 to the substrate 120 and a third radiating part 114 extending from the second radiating part 113 may be included.

3B is a graph illustrating a reflection coefficient according to a frequency of the broadband antenna module 100 according to an embodiment.

The antenna element 110 of the present invention is characterized in that it can transmit and receive signals in a wide band, and referring to FIG. 3B, preferably, it relates to an antenna element 110 capable of operating in a frequency band of 1710 MHz or more and 5000 MHz or less. . Additionally, it may also resonate in a low frequency band (800 MHz) band to transmit/receive a signal in a low frequency band.

The antenna element 110 shown in FIG. 2 has an optimal shape, and some components may be omitted or modified. Even if some components are omitted or the shape is different from the shape of FIG. 2 , the resonance frequency may be different, but this is also included in the present invention because it relates to the antenna element 110 capable of wideband wireless communication.

The antenna element 110 of this embodiment includes a connection portion connected to the substrate 120 , a connection portion extending in a direction spaced apart from the substrate 120 , and a horizontal portion spaced apart from the substrate 120 by a predetermined distance and disposed parallel to the substrate 120 . include

The connection unit includes a feeding point 111 connected to the feeding unit 121 . The feeding point 111 is a point that transmits the received signal to the radiating units 112 and 113 to be radiated, and is a major component of the antenna.

A ground line 116 connecting the antenna element 110 and the ground unit 122 of the substrate 120 is coupled to the substrate 120 , and an end of the third radiation unit 114 is coupled to the substrate 120 . can be The ground line 116 and the third radiating unit 114 are related to a signal of a low frequency band, and this will be described later with reference to the embodiments of FIGS. 4 to 8 .

The connection part may extend in a direction perpendicular to the substrate 120 like the vertical part 114a or the ground line 116 , and the first radiating part 112 and the second radiating part 113 extending from the feeding point 111 . ) and may extend obliquely to form an incline.

The horizontal part is disposed to be spaced apart from the substrate 120 by a predetermined distance (eg, 10 mm to 25 mm), and this is to arrange the horizontal part at a distance from the ground part 122 on the substrate 120 . In order to maintain a distance between the horizontal portion and the substrate 120, an insulating pillar 119 (refer to FIG. 9A) may be further provided.

The insulating pillar 119 is made of an insulating material and prevents the distance from the antenna element 110 to the substrate 120 from changing or the shape of the antenna element 110 from changing. Although the first radiating part 112 and the third radiating part 114 are illustrated as supporting two places, the number of insulating pillars 119 may increase or decrease.

Fig. 3a is a side view of the broadband antenna module 100 of Fig. 2, and the power supply unit 121 and the ground unit 122 are displayed on the substrate 120. Fig. 3b is the antenna of the form shown in Fig. 3a It is a diagram showing the reflection coefficient of the device 110 .

The reflection coefficient indicates the degree to which the signal applied to the power supply unit 121 of the antenna element 110 is reflected again, and the graph of FIG. 3B shows the reflection coefficient according to the frequency band.

The larger the reflection coefficient, the larger the size of the reflected signal and the smaller the reflection coefficient means that the antenna element 110 can radiate and transmit the signal.

That is, when the reflection coefficient (return loss) has a negative value of -5 dB or more, a signal of a corresponding frequency band can be transmitted, and this can be called a resonance frequency of the antenna element 110 .

In general, the resonant frequency may vary depending on the length of the antenna element 110 and the positions of the feeding point 111 connected to the antenna element 110 and the feeding unit 121 and the ground point 115 connected to the ground unit 122 . have.

The antenna of this embodiment operates in a first frequency band of 1710 to 5000 MHz which is a high frequency band and a second frequency band of 824 to 894 MHz which is a low frequency band. Since the first frequency bandwidth is wide at about 3300 MHz, various signals can be covered.

Because signals of different frequency bands are used depending on the region and communication service provider, the antenna module that covers the broadband signal can be used even when going to a foreign country or using another communication company, so it is not necessary to mount different antenna modules depending on the region and communication company. none.

In addition, since it is possible to cover a signal of a low frequency band, there is an advantage in that an operable frequency band is wide.

Although the configuration of the entire antenna element 110 affects the antenna performance of each frequency band, the configuration that has a greater influence on the first frequency band and the second frequency band may be slightly different.

The first frequency band is greatly influenced by the first radiating part 112 and the second radiating part 113 extending from the feeding point 111 connected to the feeding part 121, and the second frequency band is affected by the third radiating part The presence or absence of 114 and the ground line 116 is greatly affected.

Hereinafter, in order to examine in detail the effect of each configuration of the antenna element 110 on the antenna performance, various embodiments of the antenna element 110 will be described.

4 to 8 are graphs illustrating the broadband antenna module 100 and reflection coefficients according to frequency according to another embodiment.

The antenna element 110a shown in FIG. 4A is an embodiment in which the first radiating part 112 extending from the feeding point 111 of the antenna element 110 shown in FIG. 3A is omitted.

The first radiating part 112 and the second radiating part 113 shown in FIG. 3A form a symmetrical structure with respect to the feeding point 111 and extend in a V-shape in a direction away from the substrate 120 .

The first radiating part 112 extending in the first direction from the feeding part 121 has a floating end, that is, an electrically open state without being grounded.

The second radiating part 113 is connected to the third radiating part 114 and the ground line 116 , and the lengths of the first radiating part 112 and the second radiating part 113 may be different.

As such, the first radiating part 112 and the second radiating part 113 have different lengths and connected configurations, so that the resonant frequency of the first radiating part 112 and the second radiating part 113 are different from each other. and, thereby, a resonable frequency band may be widened.

FIG. 4B is a graph showing reflection coefficients of the embodiment of FIG. 3A and the embodiment of FIG. 4A . A reflection coefficient (reference) of the antenna element 110 including the second radiating part 113 and the first radiating part 112 in a V-shape facing as shown in FIG. 3A and the first radiating part as shown in FIG. 4A (112) indicates the reflection coefficient of the omitted antenna element 110a (FIG. 4A first radiation part omitted).

Referring to the reflection coefficient of the antenna element 110 of FIG. 3A , a portion having a reflection coefficient less than a reference reflection coefficient capable of transmitting and receiving a radio signal, that is, a bandwidth (BW: Band width) is 3683 MHz, which is a wide band.

Meanwhile, referring to the reflection coefficient of the antenna element 110a of FIG. 4A , the bandwidth has a bandwidth of 1180 MHz. The bandwidth of the antenna element 110a of FIG. 4A is less than half the bandwidth of the embodiment of FIG. 3A, and the usable frequency band becomes narrower.

From the graph of FIG. 4b, the antenna element 110 having the first radiating part 112 and the second radiating part 113 extending in a symmetrical structure from the feeding point 111 connected to the feeding part 121 transmits a broadband signal. You can see that it can be covered.

5A and 5B show an embodiment in which the shapes of the first radiating parts 112 and 112b and the second radiating parts 113 and 113b connected to the power feeding part 121 are different from each other, and FIG. 5C is shown in FIGS. 5A and 5C . It is a graph of reflection coefficients according to the antenna elements 110 and 110b of 5b.

The first radiating part 112 and the second radiating part 113 shown in FIG. 5A have a tapered shape that becomes wider as they are spaced apart from the feeding point 111. According to the embodiment of FIG. 5B, the first radiating part 112b ) and the width of the second radiating part 113b are constant.

Referring to the reflection coefficient graph of FIG. 5C , the bandwidth BWa of the antenna element 110 of FIG. 5A is 3610 MHz, and the bandwidth BWb of the antenna element 110b of FIG. 5B is 2675 MHz.

That is, disposing the first radiating part 112 and the second radiating part 113 to form a V-shaped symmetrical shape also helps to expand the bandwidth, and furthermore, the first radiating part 112 and the second radiating part 113 ) is extended in a tapered shape, which helps to expand the bandwidth.

As shown in FIG. 5A , a linear distance from the feeding point 111 to the ends of the first radiating part 112 and the second radiating part 113 can be formed in various ways, so that a range of frequencies that can be covered can be widened.

The bandwidth of the antenna element 110 having the first radiating part 112 and the second radiating part 113, which is widened in a tapered shape as in the embodiment of FIG. 5A, has a bandwidth of the first extending to the same width as in FIG. 5B. It is wider than the bandwidth of the antenna element 110 having the radiating part 112 and the second radiating part 113 .

Accordingly, the broadband antenna module 100 of a wider bandwidth may be implemented using the antenna element 110 of FIG. 5A .

An effect on the low frequency band, that is, the second frequency band depending on the presence or absence of each configuration of the antenna element 110 will be examined with reference to FIGS. 6A to 8C .

6A is an embodiment including only the first radiating part 112 and the second radiating part 113 extending from the feeding point 111, in which the ground line 116 and the third radiating part 114 are omitted. of the antenna element 110c is shown.

FIG. 6B is a graph illustrating a reflection coefficient (see FIG. 3A ) of the antenna element 110 according to FIG. 3A and a reflection coefficient ( FIG. 6A ) of the antenna element 110c according to FIG. 6A .

The reflection coefficient (reference) of the antenna element 110 according to FIG. 3A forms a peak downward in the second frequency band near 830 MHz.

However, in the antenna element 110c in which the ground line 116 and the third radiation unit 114 are omitted as shown in FIG. 6A , the signal of the first frequency band satisfies a wide band, but resonance does not occur in the signal of the second frequency band. Signals in the low frequency band cannot be transmitted and received.

The lower the frequency, the longer the radiating part is required, and the first radiating part 112 and the second radiating part 113 are relatively short compared to the third radiating part 114, so a radio using a signal of a high frequency band (first frequency band). In charge of communication, the third radiating unit 114 is in charge of wireless communication using a signal of a low frequency band (second frequency band) because it is relatively long compared to the first radiating unit 112 and the second radiating unit 113 . do.

Accordingly, as shown in FIG. 6A , the antenna element 110c in which the third radiating unit 114 is omitted does not resonate in the second frequency band and thus cannot transmit/receive a signal in the second frequency band.

FIG. 7A shows the antenna element 110d in a form in which only the third radiation part 114 is added in the embodiment of FIG. 6A and the ground line 116 is omitted in the embodiment of FIG. 3A .

Since the long third radiation part 114 is included, like the antenna element 110 of the embodiment of FIG. 3A , the reflection coefficient of the antenna element 110d of FIG. 7A may increase to a negative value in the second frequency band. . However, since it does not fall below 5 dB, the antenna element 110d of FIG. 7A cannot substantially cover the signal of the second frequency band.

8A shows an embodiment of the antenna element 110 including the ground line 116, but the length of the third radiation part 114 is short, and the vertical part 114a extending to the substrate 120 is omitted. have.

8B shows an embodiment of the antenna element 110f including only the ground line 116 and omitting the third radiation unit 114 .

8C is a graph illustrating reflection coefficients of the antenna element 110e of FIG. 8A and the antenna element 110f of FIG. 8B.

As shown in FIG. 8B , the antenna element 110f in which the third radiating part 114 is omitted does not generate resonance in the second frequency band because there is no radiating part capable of radiating the signal of the second frequency band.

On the other hand, as shown in FIG. 8A , the antenna element 110e in which the end of the third radiation part 114 is not connected to the substrate 120 has a problem in that the length of the third radiation part 114 is shortened.

In order to secure the length of the radiating part in a limited space, as shown in FIG. 3A , the end 114a of the third radiating part 114 may be bent to face the substrate 120 to shorten the antenna length.

On the other hand, as shown in FIG. 8A , in the antenna element 110e in which the end of the third radiation unit 114 is disposed to be spaced apart from the substrate 120, the impedance of the second frequency band is different from that of the embodiment of FIG. For a signal, it may exhibit unstable efficiency.

Therefore, in order to implement the wideband antenna module 100 capable of transmitting and receiving stable signals in the first frequency band of the wide band (1710 ~ 5000 MHz) and the second frequency band of the low frequency band (824 ~ 894 MHz), a feeding point as shown in Fig. 3a A first radiating part 112 and a second radiating part 113 extending symmetrically at (111), a ground line 116, and a third radiating part 114 having an end extended toward the substrate 120. An antenna element 110 is required.

Depending on the range of the required frequency band, some configurations may be omitted. For example, if the signal of the second frequency band is unnecessary, only the first radiating part 112 and the second radiating part 113 extending from the feeding point 111 may be provided, or additionally only the ground line 116 may be further provided. have.

In the antenna module 100 of the present invention, the antenna element 110 is mounted on the substrate 120 and the antenna module 100 itself is mounted in a mobile terminal to transmit and receive broadband wireless signals.

An antenna such as an embodiment using a terminal case or a form attached to the case has a problem in that the design cost increases because the antenna needs to be designed differently depending on the model of the terminal.

By mounting the antenna module 100 of the present invention in the terminal, the antenna of the terminal can be implemented, thereby shortening the R&D period for designing the antenna differently according to the model of the mobile terminal and reducing the cost.

9A is a graph illustrating an embodiment of a MIMO antenna and a reflection coefficient according to frequency. The antenna element 110 of the present invention may be provided with two or more to implement a MIMO system.

MIMO (Multi Input Multi Output) is a technology that can increase the signal transmission speed more than twice by having a plurality of antennas that can transmit and receive signals of the same frequency band at the same time.

The MIMO antenna may be, for example, a 2x2 system having two antennas at the transmitting side and two antennas at the receiving side, or a 4x4 system having four antennas at the transmitting side and 4 antennas at the receiving side.

The MIMO antenna shown in FIG. 9A is a configuration for a 2x2 system, and the two antennas are vertically or horizontally disposed and may be disposed at positions spaced apart as much as possible within the substrate 120 .

This is to minimize interference between the two antenna elements 110 positioned on the substrate 120 .

Minimizing the interference is by isolating the two antennas, and as the degree of isolation between the two antennas increases, the interference is minimized, so that the performance of each antenna element 110 can be maintained in the best state.

9B is a view showing the reflection coefficients of the two antenna elements 110 of FIG. 9A. As shown in the embodiment of FIG. 3A with one antenna element 110 and two antenna elements 110 vertically arranged as shown in FIG. 9A, FIG. When included, it shows a similar reflection coefficient pattern.

When the two antenna elements 110 are spaced apart from each other and disposed orthogonally, the radiation patterns are also orthogonal to each other, so that the interference between the radiation patterns is small and the degree of isolation is increased.

Therefore, even when the two antenna elements 110 are disposed as shown in FIG. 9A , the reflection coefficients appear similar, and the antenna frequency characteristics can be maintained.

10A and 10B are plan views illustrating a broadband antenna module 100 according to another embodiment. FIG. 10A is a wideband antenna module 100 having a MIMO antenna of a 2x2 system, and FIG. 10B is a MIMO of a 4x4 system. A broadband antenna module 100 with an antenna.

The broadband antenna module 100 may be disposed on the substrate 120 with a plurality of antenna elements 110 spaced apart from each other to minimize interference.

In addition, an array antenna for transmitting and receiving mmWave (millimeter wave) 5G signals of 25 GHz or higher as well as a frequency band of 6 GHz or less may be further mounted. Since the array antenna performs wireless communication with millimeter wave signals, interference with other antenna elements 110 does not occur severely.

Therefore, as shown in FIGS. 10A and 10B , each antenna element 110 may be disposed in the remaining space after being spaced apart from each other.

The broadband antenna module 100 of the present invention can transmit and receive all of the wideband signals ranging from 800 MHz to 5000 MHz in one antenna element 110, thereby reducing the number of antennas.

In addition, when the broadband antenna module 100 is used, it is not necessary to design an antenna every time according to a terminal model, thereby shortening the R&D period and reducing costs.

The broadband antenna module 100 according to the embodiment of the present invention has been described as a specific embodiment, but this is merely an example and the present invention is not limited thereto, and has the widest range according to the basic idea disclosed in the present specification. should be interpreted

A person skilled in the art may practice unspecified embodiments by combining and substituting the disclosed embodiments, but this also does not depart from the scope of the present invention. In addition, those skilled in the art can easily change or modify the disclosed embodiments based on the present specification, and it is clear that such changes or modifications also fall within the scope of the present invention.

100: broadband antenna module
110: antenna element
111: feeding point
112: first radiating unit
113: second radiating unit
114: third radiating unit
115: ground point
116: ground line
120: substrate
130: array antenna

Claims (14)

a substrate including a grounding unit and a power feeding unit; and
Doedoe comprising an antenna element formed on the substrate,
The antenna element is
a feeding point connected to the feeding unit;
a first radiating portion extending in a first direction from the feeding point; and
and a second radiating part extending in a second direction from the feeding point to form a V-shape with the first radiating part and forming a V-shape with the first radiating part
Broadband antenna module. The method of claim 1,
The width of the first radiating part and the second radiating part increases as the distance from the feeding point increases.
Broadband antenna module. The method of claim 1,
The length of the first radiating part and the length of the second radiating part are different from each other
Broadband antenna module. The method of claim 1,
The second radiating unit
Further comprising a horizontal portion parallel to the substrate at a position spaced apart from the substrate
Broadband antenna module. 5. The method of claim 4,
The second radiating part further comprises a ground line bent toward the substrate at the end of the horizontal part
Broadband antenna module. The method of claim 1,
The second radiating unit further includes a ground line bent toward the substrate
Broadband antenna module. The method of claim 1,
including a third radiating part extending from the second radiating part
Broadband antenna module. 8. The method of claim 7,
The third radiating unit
a horizontal portion parallel to the substrate and
Comprising a vertical portion bent toward the substrate at the end of the horizontal portion
Broadband antenna module. 8. The method of claim 7,
Further comprising at least one insulating pillar positioned between the third radiation part and the substrate
Broadband antenna module. The method of claim 1,
The antenna element is mounted on the substrate, characterized in that
Broadband antenna module. The method of claim 1,
The first radiating part and the second radiating part are formed to face each other, characterized in that
Broadband antenna module. The method of claim 1,
It further comprises at least one millimeter wave device mounted on the substrate,
The antenna element and the millimeter wave element, characterized in that do not overlap each other
Broadband antenna module. a substrate including a grounding unit and a power feeding unit; and
It is formed on the substrate and is configured to include a plurality of antenna elements spaced apart from each other and disposed orthogonally,
The antenna element is
a feeding point connected to the feeding unit;
a first radiating part extending in a first direction from the feeding point; and
and a second radiating part extending in a second direction from the feeding point to form a V-shape with the first radiating part
Broadband antenna module. The broadband antenna module of any one of claims 1 to 13; and
and a housing in which the broadband antenna module is mounted.
mobile terminal.

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