WO2020145419A1 - Electronic device comprising antenna - Google Patents

Abstract

An electronic device comprising an antenna according to the present invention is provided. The electronic device includes: an antenna disposed on a side surface of the electronic device and disposed on a substrate; and a spiral-shaped feeding unit including a feeding line which is disposed under the antenna to couple-feed the antenna. The feeding unit includes a first and a second feeding unit to couple-feed the antenna such that the antenna is dual-polarized and resonates, and thus can provide an antenna configuration capable of reducing sensitivity to performance change of an antenna element by using a spiral-shaped feeding structure, and an electronic device to support the antenna configuration.

Description

Electronic equipment with antenna

The present invention relates to an electronic device having an antenna. More particularly, it relates to an electronic device having an array antenna.

Electronic devices may be divided into mobile/portable terminals and stationary terminals depending on whether they are movable. Again, electronic devices may be divided into handheld terminals and vehicle mounted terminals according to whether the user can directly carry them.

The functions of electronic devices are diversifying. For example, there are functions for data and voice communication, photo and video shooting through a camera, voice recording, music file playback through a speaker system, and output of an image or video to the display. In some terminals, an electronic game play function is added or a multimedia player function is performed. In particular, recent mobile terminals can receive multicast signals that provide visual content such as broadcast and video or television programs.

As such electronic devices have diversified functions, for example, they are implemented in the form of a multimedia player equipped with complex functions such as taking pictures or videos, playing music or video files, and receiving games and broadcasts. have.

In order to support and increase the functions of such electronic devices, it may be considered to improve the structural part and/or software part of the terminal.

In addition to the above attempts, in recent years, a wireless communication system using LTE communication technology has been commercialized to provide various services. In addition, it is expected that wireless communication systems using 5G communication technology will be commercialized in the future to provide various services. Meanwhile, some of the LTE frequency bands may be allocated to provide 5G communication service.

In this regard, the mobile terminal may be configured to provide 5G communication service in various frequency bands. Recently, attempts have been made to provide a 5G communication service using a Sub6 band below the 6GHz band. However, in the future, it is expected to provide 5G communication service using millimeter wave (mmWave) band in addition to Sub6 band for faster data rate.

However, there is a problem in that there is no specific proposal on which antenna element to use in this millimeter wave (mmWave) band and how to feed such antenna element.

Particularly, among electronic devices, a mobile terminal has a problem in that a space for arranging an antenna on the side becomes more insufficient as a thin and low-profile structure is required. Accordingly, as the antenna is disposed on the side of the electronic device, the area of the ground is reduced, thereby deteriorating the antenna performance.

In addition, in the millimeter wave band, there is a problem in that performance is greatly changed according to an antenna manufacturing error. In particular, the antenna feeding in the millimeter wave band is likely to use a coupling type feeding method for more broadband operation. In such a coupling type feeding method, there is a problem that the performance of the antenna element deteriorates due to an alignment error between the antenna element and a feeding line disposed on a different substrate.

The present invention aims to solve the above and other problems. In addition, another object is to provide an antenna configuration capable of alleviating the sensitivity of the performance change of the antenna element in a higher frequency band and an electronic device supporting the antenna configuration.

Another object of the present invention is to provide an electronic device having a configuration in which antenna elements in which the sensitivity of the antenna performance change is relaxed can be arranged on the side of the electronic device.

In order to achieve the above or other object, an electronic device having an antenna according to the present invention is provided. The electronic device is a feeding unit composed of an antenna disposed on a side of an electronic device and disposed on a substrate, and a spiral-shaped feeding line disposed under the antenna to feed the coupling to the antenna. ). At this time, the power supply unit includes first and second power supply units for coupling and feeding so that the antenna resonates with a double polarization, and an antenna configuration capable of alleviating the sensitivity of the performance change of the antenna element using a spiral type feeding structure. And electronic devices supporting such an antenna configuration.

In one embodiment, the first and second feeding parts, the outermost arm and the outermost arm (adjacent arm) and the adjacent outer arm (adjacent arm) so that the direction of the current is formed opposite to each other so that the mutually canceled the outermost arm and the adjacent arm The length between can be determined. In this case, as the currents cancel each other according to the determined length, the leakage field may be reduced to reduce the thickness of the module in which the antenna is disposed.

In one embodiment, the antenna is a circular patch array antenna arranged in a plurality in a horizontal direction, and each of the array antennas is dual fed by the first and second feeders. feeding).

In one embodiment, the first and second feeders are formed with the same length and width, and may be symmetrical left and right based on the circular patch.

In one embodiment, the sum of the areas of the first and second feeders may be 40 to 50% of the area of the antenna.

In one embodiment, the antenna is fed orthogonally in a diagonal direction by the first and second feeders to transmit or receive the orthogonal diagonal first and second polarization signals can do.

In an embodiment, the antenna may include: an active patch antenna coupled and fed by the first and second feeders; And a stack patch antenna disposed on the active patch antenna and configured to operate in a wide band.

In one embodiment, the active patch antenna and the stack patch antenna are circular patch array antennas that can be formed to the smallest size to reduce antenna radiator size and prevent interference between the antenna radiators. array antenna).

In one embodiment, in the circular patch array antenna, the diameter of the stack patch antenna may be set larger than the diameter of the active patch antenna so that the gain of the antenna radiator is optimized.

In one embodiment, the shape of the substrate on which the circular patch array antenna is disposed may have an asymmetrical shape in which a horizontal ground region is less than a vertical ground region so that it can be disposed on a side surface of the electronic device. It may be in the form of an asymmetric ground.

An electronic device having an array antenna according to another aspect of the present invention is provided. The electronic device is arranged on a side of the electronic device, an array antenna disposed on a substrate, and a spiral-type feeding line disposed below the array antenna to feed power to each antenna element of the array antenna. It comprises a feeding unit (feeding unit), the feeding unit includes a first feeding unit and a second feeding unit for coupling and feeding so that the antenna element resonates with a double polarization.

In one embodiment, the first power supply unit is coupled by the first power combiner, and may be connected to the first power amplifier and the first receive amplifier. In addition, the second power supply unit may be coupled by a second power combiner to be connected to the second power amplifier and the second receive amplifier.

In one embodiment, the electric field is supplied to the antenna element by the first feeding unit, and an electric field is formed in a first polarization direction to operate as the first antenna. In addition, an electric field may be supplied to the antenna element in the direction of the second polarization by being fed by the second feeding unit to operate as a second antenna. Accordingly, the second polarization direction is formed perpendicular to the first polarization direction, so that the first antenna and the second antenna may operate as a multiple input multiple output (MIMO) antenna.

In one embodiment, the first and second feeding parts, the outermost arm and the outermost arm (adjacent arm) and the adjacent outer arm (adjacent arm) so that the direction of the current is formed opposite to each other so that the mutually canceled the outermost arm and the adjacent arm The length between can be determined. In this case, as the currents cancel each other according to the determined length, the leakage field may be reduced to reduce the thickness of the module in which the antenna is disposed.

In one embodiment, the antenna is a circular patch array antenna arranged in a plurality in a horizontal direction, and each of the array antennas is dual fed by the first and second feeders. feeding).

In one embodiment, the first and second feeders are formed with the same length and width, and may be symmetrical left and right based on the circular patch.

An electronic device having an antenna according to the present invention has an advantage of providing an antenna configuration capable of alleviating the sensitivity of a change in performance of an antenna element using a spiral-type feeding structure and an electronic device supporting the antenna configuration. have.

According to the present invention, it is possible to provide an electronic device having a configuration capable of being arranged in a low-profile structure on the side of the electronic device by adopting a circular patch form having a reduced size and through spiral feeding in a specific feeding direction. It has the advantage of being able to.

1A is a block diagram illustrating an electronic device related to the present invention, and FIGS. 1B and 1C are conceptual views illustrating an example of an electronic device related to the present invention in different directions.

2 shows a configuration of a wireless communication unit of an electronic device operable in a plurality of wireless communication systems according to the present invention.

3 shows an array antenna structure of various configurations according to the present invention.

4 shows a circular patch antenna structure in which the dual patch method of the circular patch antenna and the spiral type according to the present invention is adopted.

5 shows an electric field shape in a spiral-type power feeding unit according to the present invention.

6 is a conceptual diagram showing deterioration of antenna performance according to manufacturing or alignment error of a certain number in the antenna structure according to the present invention.

7 is a comparison of polarization characteristics in the dual mode according to the present invention.

8 shows the same antenna characteristics for each polarization in a feeding method using a diagonal mode in an asymmetric ground structure as in the present invention.

9 shows various examples in which a circular patch antenna according to the present invention is disposed together with a square patch antenna operating in different frequency bands.

FIG. 10 shows an equivalent circuit for explaining the operation of a spiral patch dual feeder and a stacked circular patch antenna according to the present invention.

11 shows the reflection coefficient characteristics and the isolation characteristics between the dual polarizations of the circular patch antenna of the spiral type double feeder and the stack structure according to the present invention.

12 shows the structure of a dual polarized circular patch array antenna of a spiral feeding structure according to the present invention.

13 shows a structure in which a dual polarization array antenna having a spiral feeding structure according to the present invention is connected to a transmitting and receiving circuit.

Hereinafter, exemplary embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar elements are assigned the same reference numbers regardless of the reference numerals, and overlapping descriptions thereof will be omitted. The suffixes "modules" and "parts" for components used in the following description are given or mixed only considering the ease of writing the specification, and do not have meanings or roles distinguished from each other in themselves. In addition, in the description of the embodiments disclosed herein, when it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed herein, detailed descriptions 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 in the specification is not limited by the accompanying drawings, and all modifications included in the spirit and technical scope of the present invention , It should be understood to include equivalents or substitutes.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from other components.

When an element is said to be "connected" or "connected" to another component, it is understood that other components may be directly connected to or connected to the other component, but there may be other components in between. It should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that no other component exists in the middle.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, terms such as “comprises” or “have” are intended to indicate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and that one or more other features are present. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

Electronic devices described herein include mobile phones, smart phones, laptop computers, digital broadcasting terminals, personal digital assistants (PDAs), portable multimedia players (PMPs), navigation, and slate PCs. , Tablet PC (tablet PC), ultrabook (ultrabook), wearable device (wearable device, for example, a watch-type terminal (smartwatch), glass-type terminal (smart glass), HMD (head mounted display), etc. may be included have.

However, the configuration according to the embodiment described in the present specification can be easily recognized by those skilled in the art that the configuration may be applied to a fixed terminal such as a digital TV, a desktop computer, and a digital signage, except when applicable only to a mobile terminal. will be.

1A to 1C, FIG. 1A is a block diagram illustrating an electronic device related to the present invention, and FIGS. 1B and 1C are conceptual views of an electronic device related to the present invention as viewed from different directions.

The electronic device 100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, and a power supply unit 190 ) And the like. The components shown in FIG. 1A are not essential for implementing an electronic device, and thus, the electronic device described herein may have more or fewer components than those listed above.

More specifically, the wireless communication unit 110 among the components, between the electronic device 100 and the wireless communication system, between the electronic device 100 and another electronic device 100, or the electronic device 100 and an external server It may include one or more modules that enable wireless communication between. Also, the wireless communication unit 110 may include one or more modules connecting the electronic device 100 to one or more networks. Here, the one or more networks may be, for example, a 4G communication network and a 5G communication network.

The wireless communication unit 110 may include at least one of a 4G wireless communication module 111, a 5G wireless communication module 112, a short-range communication module 113, and a location information module 114.

The 4G wireless communication module 111 may transmit and receive 4G base stations and 4G signals through a 4G mobile communication network. At this time, the 4G wireless communication module 111 may transmit one or more 4G transmission signals to a 4G base station. Also, the 4G wireless communication module 111 may receive one or more 4G reception signals from a 4G base station.

In this regard, uplink (UL) multi-input multi-output (MIMO) may be performed by a plurality of 4G transmission signals transmitted to a 4G base station. In addition, downlink (DL) multi-input multi-output (MIMO) may be performed by a plurality of 4G received signals received from a 4G base station.

The 5G wireless communication module 112 may transmit and receive 5G base stations and 5G signals through a 5G mobile communication network. Here, the 4G base station and the 5G base station may have a non-stand-alone (NSA) structure. For example, the 4G base station and the 5G base station may be a co-located structure disposed at the same location in the cell. Alternatively, the 5G base station may be arranged in a stand-alone (SA) structure at a location separate from the 4G base station.

The 5G wireless communication module 112 may transmit and receive 5G base stations and 5G signals through a 5G mobile communication network. At this time, the 5G wireless communication module 112 may transmit one or more 5G transmission signals to a 5G base station. Also, the 5G wireless communication module 112 may receive one or more 5G reception signals from a 5G base station.

At this time, the 5G frequency band may use the same band as the 4G frequency band, which may be referred to as LTE re-farming. Meanwhile, as a 5G frequency band, a Sub6 band, which is a band of 6 GHz or less, may be used.

On the other hand, the millimeter wave (mmWave) band may be used as a 5G frequency band to perform broadband high-speed communication. When the millimeter wave (mmWave) band is used, the electronic device 100 may perform beam forming for communication coverage expansion with the base station.

Meanwhile, regardless of the 5G frequency band, a 5G communication system may support a larger number of multi-input multi-output (MIMO) to improve transmission speed. In this regard, uplink (UL) MIMO may be performed by a plurality of 5G transmission signals transmitted to a 5G base station. In addition, downlink (DL) MIMO may be performed by a plurality of 5G reception signals received from a 5G base station.

Meanwhile, the wireless communication unit 110 may be in a dual connectivity (DC) state with a 4G base station and a 5G base station through the 4G wireless communication module 111 and the 5G wireless communication module 112. As such, a dual connection between a 4G base station and a 5G base station may be referred to as EN-DC (EUTRAN NR DC). Here, EUTRAN is an Evolved Universal Telecommunication Radio Access Network, which means a 4G wireless communication system, and NR is New Radio, which means a 5G wireless communication system.

Meanwhile, if the 4G base station and the 5G base station have a co-located structure, throughput can be improved through inter-CA (carrier aggregation). Therefore, the 4G base station and the 5G base station can be In the EN-DC state, the 4G reception signal and the 5G reception signal can be simultaneously received through the 4G wireless communication module 111 and the 5G wireless communication module 112.

The short-range communication module 113 is for short-range communication, Bluetooth™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, NFC (Near Field Communication), by using at least one of Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, Wireless USB (Wireless Universal Serial Bus) technology, it can support short-range communication. The short-range communication module 114 may be provided between the electronic device 100 and a wireless communication system, between the electronic device 100 and other electronic devices 100, or through the electronic device 100 through wireless area networks. ) And other electronic devices 100 or a network in which an external server is located may support wireless communication. The short-range wireless communication network may be wireless personal area networks (Wireless Personal Area Networks).

Meanwhile, short-range communication between electronic devices may be performed using the 4G wireless communication module 111 and the 5G wireless communication module 112. In an embodiment, short-range communication may be performed by a device-to-device (D2D) method between electronic devices without going through a base station.

Meanwhile, for improving transmission speed and convergence of a communication system, carrier aggregation (CA) is performed using at least one of the 4G wireless communication module 111 and the 5G wireless communication module 112 and the Wi-Fi communication module 113. This can be done. In this regard, 4G + WiFi carrier aggregation (CA) may be performed using the 4G wireless communication module 111 and the Wi-Fi communication module 113. Alternatively, 5G + WiFi carrier aggregation (CA) may be performed using the 5G wireless communication module 112 and the Wi-Fi communication module 113.

The location information module 114 is a module for acquiring a location (or current location) of an electronic device, and representative examples thereof include a Global Positioning System (GPS) module or a Wireless Fidelity (WiFi) module. For example, if the electronic device utilizes a GPS module, the position of the electronic device may be acquired using a signal transmitted from a GPS satellite. As another example, when the Wi-Fi module is used as an electronic device, the location of the electronic device may be acquired based on information of a Wi-Fi module and a wireless access point (AP) that transmits or receives a wireless signal. If necessary, the location information module 115 may perform any function of other modules of the wireless communication unit 110 in order to obtain data regarding the location of the electronic device by substitution or additionally. The location information module 115 is a module used to obtain a location (or current location) of the electronic device, and is not limited to a module that directly calculates or acquires the location of the electronic device.

Specifically, when the electronic device utilizes the 5G wireless communication module 112, the location of the electronic device may be obtained based on the information of the 5G wireless communication module and the 5G base station that transmits or receives the wireless signal. In particular, the 5G base station in the millimeter wave (mmWave) band is deployed in a small cell having a small coverage, so it is advantageous to acquire the location of the electronic device.

The input unit 120 may include a camera 121 for inputting a video signal or a video input unit, a microphone for inputting an audio signal (microphone 122), or an audio input unit, a user input unit 123 for receiving information from a user, for example , A touch key, a mechanical key, and the like. The voice data or image data collected by the input unit 120 may be analyzed and processed by a user's control command.

The sensing unit 140 may include one or more sensors for sensing at least one of information in the electronic device, surrounding environment information surrounding the electronic device, and user information. For example, the sensing unit 140 includes a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, and gravity G-sensor, gyroscope sensor, motion sensor, RGB sensor, infrared sensor (IR sensor), fingerprint scan sensor, ultrasonic sensor , Optical sensor (e.g., camera (see 121)), microphone (see 122, battery), battery gauge, environmental sensor (e.g. barometer, hygrometer, thermometer, radioactivity sensor, Thermal sensor, gas sensor, etc.), chemical sensors (for example, electronic nose, health care sensor, biometric sensor, etc.). Meanwhile, the electronic device disclosed in this specification may combine and use information sensed by at least two or more of these sensors.

The output unit 150 is for generating output related to vision, hearing, or tactile sense, and includes at least one of a display unit 151, an audio output unit 152, a hap tip module 153, and an optical output unit 154 can do. The display unit 151 may form a mutual layer structure with the touch sensor or may be integrally formed, thereby realizing a touch screen. The touch screen may function as a user input unit 123 that provides an input interface between the electronic device 100 and a user, and at the same time, provide an output interface between the electronic device 100 and the user.

The interface unit 160 serves as a passage with various types of external devices connected to the electronic device 100. The interface unit 160 connects a device equipped with a wired/wireless headset port, an external charger port, a wired/wireless data port, a memory card port, and an identification module. It may include at least one of a port, an audio input/output (I/O) port, a video input/output (I/O) port, and an earphone port. In the electronic device 100, in response to an external device being connected to the interface unit 160, appropriate control related to the connected external device may be performed.

Also, the memory 170 stores data supporting various functions of the electronic device 100. The memory 170 may store a number of application programs (application programs) driven by the electronic device 100, data for operating the electronic device 100, and instructions. At least some of these applications can be downloaded from external servers via wireless communication. In addition, at least some of these application programs may exist on the electronic device 100 from the time of shipment for basic functions of the electronic device 100 (for example, an incoming call, a calling function, a message reception, and a calling function). Meanwhile, the application program may be stored in the memory 170 and installed on the electronic device 100 to be driven by the controller 180 to perform an operation (or function) of the electronic device.

The controller 180 controls the overall operation of the electronic device 100 in addition to the operations related to the application program. The controller 180 may provide or process appropriate information or functions to the user by processing signals, data, information, etc. input or output through the above-described components or by driving an application program stored in the memory 170.

In addition, the controller 180 may control at least some of the components described with reference to FIG. 1A in order to drive the application program stored in the memory 170. Furthermore, the controller 180 may operate by combining at least two or more of the components included in the electronic device 100 to drive the application program.

Under the control of the controller 180, the power supply unit 190 receives external power and internal power to supply power to each component included in the electronic device 100. The power supply unit 190 includes a battery, and the battery may be a built-in battery or a replaceable battery.

At least some of the components may operate in cooperation with each other to implement an operation, control, or control method of an electronic device according to various embodiments described below. Further, the operation, control, or control method of the electronic device may be implemented on the electronic device by driving at least one application program stored in the memory 170.

1B and 1C, the disclosed electronic device 100 includes a terminal body in the form of a bar. However, the present invention is not limited to this, and may be applied to various structures such as a watch type, a clip type, a glass type, or a folder type, a flip type, a slide type, a swing type, a swivel type to which two or more bodies are movably coupled. . Although related to a specific type of electronic device, the description of a specific type of electronic device may be generally applied to other types of electronic devices.

Here, the terminal body may be understood as a concept referring to the electronic device 100 as at least one aggregate.

The electronic device 100 includes a case (eg, a frame, a housing, a cover, etc.) forming an exterior. As illustrated, the electronic device 100 may include a front case 101 and a rear case 102. Various electronic components are disposed in the inner space formed by the combination of the front case 101 and the rear case 102. At least one middle case may be additionally disposed between the front case 101 and the rear case 102.

A display unit 151 is disposed on the front of the terminal body to output information. As illustrated, the window 151a of the display unit 151 is mounted on the front case 101 to form the front surface of the terminal body together with the front case 101.

In some cases, electronic components may also be mounted on the rear case 102. Electronic components that can be mounted on the rear case 102 include a removable battery, an identification module, and a memory card. In this case, a rear cover 103 for covering the mounted electronic component may be detachably coupled to the rear case 102. Therefore, when the rear cover 103 is separated from the rear case 102, the electronic components mounted on the rear case 102 are exposed to the outside. Meanwhile, some of the side surfaces of the rear case 102 may be implemented to operate as a radiator.

As shown, when the rear cover 103 is coupled to the rear case 102, a part of the side surface of the rear case 102 may be exposed. In some cases, the rear case 102 may be completely covered by the rear cover 103 during the engagement. Meanwhile, an opening for exposing the camera 121b or the sound output unit 152b to the outside may be provided in the rear cover 103.

The electronic device 100 includes a display unit 151, first and second sound output units 152a and 152b, a proximity sensor 141, an illuminance sensor 142, a light output unit 154, the first and second units Cameras 121a and 121b, first and second operation units 123a and 123b, a microphone 122, and an interface unit 160 may be provided.

The display unit 151 displays (outputs) information processed by the electronic device 100. For example, the display unit 151 may display execution screen information of an application program driven by the electronic device 100, or UI (User Interface) or GUI (Graphic User Interface) information according to the execution screen information. .

Also, two or more display units 151 may be present depending on the implementation form of the electronic device 100. In this case, the electronic devices 100 may have a plurality of display units spaced apart or integrally disposed on one surface, or may be disposed on different surfaces.

The display unit 151 may include a touch sensor that senses a touch on the display unit 151 so that a control command can be input by a touch method. Using this, when a touch is made to the display unit 151, the touch sensor detects the touch, and the controller 180 can be configured to generate a control command corresponding to the touch based on the touch. The content input by the touch method may be a letter or a number, or an instruction or designable menu item in various modes.

As such, the display unit 151 may form a touch screen together with a touch sensor, and in this case, the touch screen may function as a user input unit 123 (see FIG. 1A ). In some cases, the touch screen may replace at least some functions of the first operation unit 123a.

The first sound output unit 152a may be implemented as a receiver that delivers a call sound to the user's ear, and the second sound output unit 152b is a loud speaker that outputs various alarm sounds or multimedia playback sounds. ).

The light output unit 154 is configured to output light to notify when an event occurs. Examples of the event include message reception, call signal reception, missed calls, alarm, schedule notification, email reception, information reception through an application, and the like. The control unit 180 may control the light output unit 154 so that the output of light is terminated when the user's event confirmation is detected.

The first camera 121a processes an image frame of a still image or video obtained by an image sensor in a shooting mode or a video call mode. The processed image frame may be displayed on the display unit 151, and may be stored in the memory 170.

The first and second operation units 123a and 123b are examples of the user input unit 123 operated to receive a command for controlling the operation of the electronic device 100, and may also be collectively referred to as a manipulating portion. have. The first and second manipulation units 123a and 123b may be employed in any manner as long as the user operates the device while receiving a tactile feeling, such as touch, push, scroll. Also, the first and second manipulation units 123a and 123b may be employed in such a way that the user operates without a tactile feeling through a proximity touch, a hovering touch, or the like.

Meanwhile, the electronic device 100 may be provided with a fingerprint recognition sensor for recognizing a user's fingerprint, and the controller 180 may use fingerprint information detected through the fingerprint recognition sensor as an authentication means. The fingerprint recognition sensor may be embedded in the display unit 151 or the user input unit 123.

The microphone 122 is configured to receive a user's voice, other sounds, and the like. The microphone 122 may be provided at a plurality of locations and configured to receive stereo sound.

The interface unit 160 is a passage through which the electronic device 100 can be connected to an external device. For example, the interface unit 160 is a connection terminal for connection with other devices (eg, earphones, external speakers), a port for short-range communication (for example, an infrared port (IrDA Port), a Bluetooth port (Bluetooth) Port, Wireless LAN Port, etc.], or at least one of a power supply terminal for supplying power to the electronic device 100. The interface unit 160 may be implemented in the form of a socket that accommodates an external card such as a subscriber identification module (SIM) or a user identity module (UIM) or a memory card for storing information.

A second camera 121b may be disposed on the rear side of the terminal body. In this case, the second camera 121b has a shooting direction substantially opposite to the first camera 121a.

The second camera 121b may include a plurality of lenses arranged along at least one line. The plurality of lenses may be arranged in a matrix format. Such a camera may be referred to as an array camera. When the second camera 121b is configured as an array camera, images may be captured in a variety of ways using a plurality of lenses, and better quality images may be obtained.

The flash 124 may be disposed adjacent to the second camera 121b. When the flash 124 photographs the subject with the second camera 121b, light is directed toward the subject.

A second sound output unit 152b may be additionally disposed on the terminal body. The second sound output unit 152b may implement a stereo function together with the first sound output unit 152a, or may be used to implement a speakerphone mode during a call.

The terminal body may be provided with at least one antenna for wireless communication. The antenna may be built in the terminal body or may be formed in the case. Meanwhile, a plurality of antennas connected to the 4G wireless communication module 111 and the 5G wireless communication module 112 may be disposed on the side of the terminal. Alternatively, the antenna may be formed of a film type and attached to the inner surface of the rear cover 103, or a case including a conductive material may be configured to function as an antenna.

On the other hand, a plurality of antennas disposed on the side of the terminal may be implemented in four or more to support MIMO. In addition, when the 5G wireless communication module 112 operates in a millimeter wave (mmWave) band, as each of the plurality of antennas is implemented as an array antenna, a plurality of array antennas may be disposed in the electronic device.

The terminal body is provided with a power supply unit 190 (see FIG. 1A) for supplying power to the electronic device 100. The power supply unit 190 may include a battery 191 built in the terminal body or configured to be detachable from the outside of the terminal body.

Hereinafter, embodiments of a multi-transmission system structure according to the present invention and an electronic device having the same, in particular, a power amplifier and an electronic device having the same in a heterogeneous radio system will be described with reference to the accompanying drawings. It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit and essential features of the present invention.

2 shows a configuration of a wireless communication unit of an electronic device operable in a plurality of wireless communication systems according to the present invention. Referring to FIG. 2, the electronic device includes a first power amplifier 210, a second power amplifier 220 and an RFIC 250. Also, the electronic device may further include a modem (Modem 400) and an application processor (AP). Here, the modem (Modem, 400) and the application processor (AP, 500) is physically implemented in one chip, it may be implemented in a logical and functionally separated form. However, the present invention is not limited thereto, and may be implemented in the form of physically separated chips depending on the application.

Meanwhile, the electronic device includes a plurality of low noise amplifiers (LNAs) 410 to 440 at the receiver. Here, the first power amplifier 210, the second power amplifier 220, the control unit 250 and the plurality of low noise amplifiers 310 to 340 are all operable in the first communication system and the second communication system. In this case, the first communication system and the second communication system may be 4G communication systems and 5G communication systems, respectively.

2, the RFIC 250 may be configured as a 4G/5G integrated type, but is not limited thereto, and may be configured as a 4G/5G separated type according to an application. When the RFIC 250 is configured as a 4G/5G integrated type, it is advantageous in terms of synchronization between 4G/5G circuits, and has an advantage that control signaling by the modem 400 can be simplified.

Meanwhile, when the RFIC 250 is configured as a 4G/5G separated type, it may be referred to as a 4G RFIC and a 5G RFIC, respectively. In particular, when the band difference between the 5G band and the 4G band is large, such as when the 5G band is composed of a millimeter wave band, the RFIC 250 may be configured as a 4G/5G separated type. As described above, when the RFIC 250 is configured as a 4G/5G separated type, there is an advantage that the RF characteristics can be optimized for each of the 4G band and the 5G band.

Meanwhile, even when the RFIC 250 is configured as a 4G/5G separated type, it is possible that the 4G RFIC and the 5G RFIC are logically and functionally separated and physically implemented in one chip.

On the other hand, the application processor (AP, 500) is configured to control the operation of each component of the electronic device. Specifically, the application processor (AP, 500) may control the operation of each component of the electronic device through the modem 400.

For example, the modem 400 may be controlled through a power management IC (PMIC) for low power operation of an electronic device. Accordingly, the modem 400 may operate the power circuits of the transmitter and receiver through the RFIC 250 in a low power mode.

In this regard, when it is determined that the electronic device is in the idle mode, the application processors AP and 500 may control the RFIC 250 through the modem 300 as follows. For example, if the electronic device is in the idle mode, at least one of the first and second power amplifiers 110 and 120 operates in the low power mode or is turned off (RFIC) through the modem 300 250 can be controlled.

According to another embodiment, when the electronic device is in a low battery mode, the application processor AP, 500 may control the modem 300 to provide wireless communication capable of low-power communication. For example, when the electronic device is connected to a plurality of entities among a 4G base station, a 5G base station, and an access point, the application processor AP 500 may control the modem 400 to enable wireless communication at the lowest power. Accordingly, even if the throughput is slightly sacrificed, the application processors AP and 500 may control the modem 400 and the RFIC 250 to perform short-range communication using only the short-range communication module 113.

According to another embodiment, if the battery level of the electronic device is greater than or equal to a threshold, the modem 300 may be controlled to select an optimal air interface. For example, the application processor (AP, 500) may control the modem 400 to receive through both the 4G base station and the 5G base station according to the remaining battery power and available radio resource information. At this time, the application processor (AP, 500) may receive the remaining battery information from the PMIC, the available radio resource information from the modem 400. Accordingly, if the remaining battery power and available radio resources are sufficient, the application processors AP and 500 may control the modem 400 and the RFIC 250 to receive through both the 4G base station and the 5G base station.

Meanwhile, the multi-transceiving system of FIG. 2 may integrate a transmitter and a receiver of each radio system into one transceiver. Accordingly, there is an advantage in that the circuit part that integrates the two types of system signals can be eliminated at the RF front-end.

In addition, since the front end components can be controlled by an integrated transmission/reception unit, it is possible to integrate the front end components more efficiently when the transmission/reception systems are separated for each communication system.

In addition, when it is separated for each communication system, it is impossible to control other communication systems as necessary, or it is impossible to efficiently allocate resources because the system delay is increased. On the other hand, the multi-transmission/reception system as shown in FIG. 2 can control other communication systems as necessary, and has the advantage of efficient resource allocation because it can minimize system delay.

Meanwhile, the first power amplifier 210 and the second power amplifier 220 may operate in at least one of the first and second communication systems. In this regard, when the 5G communication system operates in the 4G band or the Sub6 band, the first and second power amplifiers 220 are operable in both the first and second communication systems.

On the other hand, when the 5G communication system operates in the millimeter wave (mmWave) band, the first and second power amplifiers 210 and 220 may operate in the 4G band, and the other in the millimeter wave band. have.

Meanwhile, two different wireless communication systems can be implemented with one antenna by combining the transmitting and receiving unit and the transmitting and receiving antenna. At this time, 4x4 MIMO can be implemented using 4 antennas as shown in FIG. 2. At this time, 4x4 DL MIMO may be performed through downlink (DL).

Meanwhile, if the 5G band is a Sub6 band, the first to fourth antennas ANT1 to ANT4 may be configured to operate in both the 4G band and the 5G band. On the other hand, if the 5G band is a millimeter wave (mmWave) band, the first to fourth antennas ANT1 to ANT4 may be configured to operate in any one of the 4G band and the 5G band. At this time, if the 5G band is a millimeter wave (mmWave) band, each of a plurality of separate antennas may be configured as an array antenna in the millimeter wave band.

Meanwhile, 2x2 MIMO may be implemented using two antennas connected to the first power amplifier 210 and the second power amplifier 220 among the four antennas. At this time, 2x2 UL MIMO (2 Tx) may be performed through UL. Or, it is not limited to 2x2 UL MIMO, and can be implemented in 1 Tx or 4 Tx. At this time, when the 5G communication system is implemented with 1 Tx, only one of the first and second power amplifiers 210 and 220 needs to operate in the 5G band. Meanwhile, when the 5G communication system is implemented with 4Tx, an additional power amplifier operating in the 5G band may be further provided. Alternatively, a transmission signal may be branched from each of one or two transmission paths, and the branched transmission signal may be connected to a plurality of antennas.

Meanwhile, a switch-type splitter or a power divider is built in the RFIC corresponding to the RFIC 250, so there is no need for a separate component to be placed outside, thereby improving component mountability. Can. Specifically, a transmitter (TX) of two different communication systems can be selected by using a single pole double throw (SPDT) switch inside the RFIC corresponding to the controller 250.

Also, an electronic device operable in a plurality of wireless communication systems according to the present invention may further include a duplexer 231, a filter 232, and a switch 233.

The duplexer 231 is configured to separate the signals of the transmission band and the reception band from each other. At this time, signals of a transmission band transmitted through the first and second power amplifiers 210 and 220 are applied to the antennas ANT1 and ANT4 through the first output ports of the duplexer 231. On the other hand, the signals of the reception band received through the antennas ANT1 and ANT4 are received by the low noise amplifiers 310 and 340 through the second output port of the duplexer 231.

The filter 232 may be configured to pass signals in a transmission band or a reception band and block signals in the other band. In this case, the filter 232 may be composed of a transmission filter connected to the first output port of the duplexer 231 and a reception filter connected to the second output port of the duplexer 231. Alternatively, the filter 232 may be configured to pass only signals in the transmission band or only signals in the reception band depending on the control signal.

The switch 233 is configured to deliver either a transmit signal or a receive signal. In one embodiment of the present invention, the switch 233 may be configured in the form of a single pole double throw (SPDT) to separate a transmission signal and a reception signal in a time division duplex (TDD) method. At this time, the transmission signal and the reception signal are signals of the same frequency band, and accordingly, the duplexer 231 may be implemented in a circulator form.

Meanwhile, in another embodiment of the present invention, the switch 233 is also applicable to a frequency division multiplexing (FDD) method. At this time, the switch 233 may be configured in the form of a double pole double throw (DPDT) to connect or block the transmission signal and the reception signal, respectively. Meanwhile, since the transmission signal and the reception signal can be separated by the duplexer 231, the switch 233 is not necessary.

Meanwhile, the electronic device according to the present invention may further include a modem 400 corresponding to the control unit. In this case, the RFIC 250 and the modem 400 may be referred to as a first controller (or first processor) and a second controller (second processor), respectively. Meanwhile, the RFIC 250 and the modem 400 may be implemented as physically separated circuits. Alternatively, the RFIC 250 and the modem 400 may be physically divided into logical or functional circuits.

The modem 400 may perform control and signal processing for transmission and reception of signals through different communication systems through the RFIC 250. The modem 400 may be obtained through control information received from a 4G base station and/or a 5G base station. Here, the control information may be received through a physical downlink control channel (PDCCH), but is not limited thereto.

The modem 400 may control the RFIC 250 to transmit and/or receive signals through the first communication system and/or the second communication system at specific time and frequency resources. Accordingly, the RFIC 250 may control transmission circuits including the first and second power amplifiers 210 and 220 to transmit a 4G signal or a 5G signal in a specific time period. In addition, the RFIC 250 may control reception circuits including the first to fourth low noise amplifiers 310 to 340 to receive a 4G signal or a 5G signal in a specific time period.

Meanwhile, a detailed operation and function of an electronic device having an antenna according to the present invention equipped with a multi-transmission/reception system as shown in FIG. 2 will be described below.

In the 5G communication system according to the present invention, the 5G frequency band may be a higher frequency band than the Sub6 band. For example, the 5G frequency band may be a millimeter wave band, but is not limited thereto, and may be changed according to application.

3 shows an array antenna structure of various configurations according to the present invention. Referring to Figure 3 (a), in the case of a general linear patch array (linear patch array) can be implemented on a substrate (substrate) of a sufficient size in the length (length) and width (width) direction.

On the other hand, referring to Figure 3 (b), in the 5G linear patch arrangement structure, the space in which the antenna is arranged in the width direction is restricted. This is because antenna elements operating in the 5G band should be arranged on the side of the electronic device. According to the structure of the asymmetric shape in which the size in the vertical direction is reduced as shown in FIG. 3 (b), there is an advantage that the antenna elements can be arranged on the side of the electronic device.

On the other hand, when the antenna is disposed within such a limited space, there is a problem that a finite ground effect occurs due to insufficient ground size. Accordingly, there is a problem that antenna performance is deteriorated.

Meanwhile, even in a 5G communication system, multiple array antennas may be arranged to support multiple input multiple output (MIMO). Alternatively, a MIMO antenna may be provided using orthogonal polarization characteristics of each antenna element of the array antenna.

In particular, the present invention is to propose a method of implementing a MIMO antenna (double polarization antenna) using an orthogonal polarization characteristic of an antenna element in an asymmetrical structure in which the vertical size is reduced.

On the other hand, in the 5G frequency band, in particular, the millimeter wave (mmWave) band, performance may vary significantly depending on an antenna manufacturing error. In particular, the antenna feeding in the millimeter wave band is likely to use a coupling type feeding method for more broadband operation. In such a coupling type feeding method, performance of an antenna element may be deteriorated according to an alignment error between an antenna element and a feeding line disposed on another substrate.

As described above, the antenna structure according to the present invention for solving the above-described antenna arrangement and performance sensitivity problems uses a circular patch antenna and a spiral-type dual feeding method.

4 shows a circular patch antenna structure in which the dual patch method of the circular patch antenna and the spiral type according to the present invention is adopted. Referring to FIG. 4, the electronic device includes an antenna 1100 including an active patch antenna 1110 and a stack patch antenna 1120 and a feeding unit 1200 composed of a spiral-type feeding line. Includes.

In this regard, as the feeding portion of the patch antenna is generally excitation into a narrow area of the patch antenna, manufacturing variation is inevitable. However, in the present invention, as shown in FIG. 4, as the excitation is performed as a large area of the patch antenna 1100, since the electrical excitation area itself is very wide, there is an advantage in that manufacturing errors are relatively small.

Meanwhile, the antenna 1100 is disposed on the substrate and is configured to be disposed on the side of the electronic device. In addition, the power supply unit 1200 is disposed under the antenna 1100 and is configured as a spiral feeding line for coupling and feeding the antenna 1100. In this case, the power supply unit 1200 may include first and second power supply units 1210 and 1220 that feed the coupling so that the antenna 1100 resonates with double polarization.

Since the power feeding part 1200 is composed of a spiral feeding line, the first and second power feeding parts 1210 and 1220 may be referred to as first and second spiral power feeding parts 1210 and 1220.

Meanwhile, the antenna 1100 according to the present invention may be configured as a multi-layer substrate structure. For example, as described above, the antenna 1100 may be configured to include an active patch antenna 1110 and a stack patch antenna 1120. In addition, when the spiral type first and second power feeding units 1210 and 1220 are included, three substrates are stacked. As such, the bandwidth characteristics of the antenna may be improved according to the multi-layered substrate structure, but height constraint problems such as an increase in thickness may occur.

In this regard, the structural difference between the patch array antenna for 5G and the general patch array antenna is limited in height. In particular, when the antenna is positioned, a certain height is not secured, and difficulty in securing the bandwidth occurs. In addition, in the case of a patch antenna, difficulty may be realized in a dual resonance broadband due to a leaking field. For example, when the antenna height is 0.08 l or less (where l is a wavelength), there is a problem in securing bandwidth.

In this regard, Table 1 shows an example of bandwidth according to the number of poles according to the present invention and a bandwidth increase ratio. Theoretically, implementation beyond Wideband with 3rd Resonance may be a difficult and inefficient approach. However, in the case of the 5G antenna, since a bandwidth increase rate of 20% is necessary for broadband operation, a triple resonant broadband structure having three or more poles must be implemented.

Number of Pole	Bandwidth	Percent B.W Increase
One	5%	-
2	10%	100%
3	12.05%	20.5%
4	13.14%	9.1%
5	13.14%	4.9%
6	14.19%	2.9%
Infinite	14.34%	1.1%

On the other hand, the sum of the areas of the first and second feeders 1210 and 1220 in a spiral form according to the present invention may be set to 40 to 50% of the area of the antenna 1100. Accordingly, not only the gain and broadband characteristics of the antenna according to the present invention can be optimized, but also has the advantage that the antenna performance sensitivity due to the antenna manufacturing error and the multi-substrate alignment error can be alleviated.

Specifically, when manufacturing the antenna, in order not to be sensitive to the process deviation of the XY axis, the area of the first and second feeders 1210 and 1220 of the double polarization as shown in FIG. 4 is an antenna, particularly of the active patch antenna 1220. It is desirable to be implemented as wide as about 50% of the area. Therefore, the larger the area of the coupling feeding region by the first and second feeding portions 1210 and 1220 may be, the more robust it is to process variation.

However, as the area of the power supply unit 1200 is larger, it may not be matched because of the strong capacitive components of the antenna, especially the active patch antenna 1220 and the power supply unit 1200. Therefore, in the present invention, in order to overcome the difficulty of antenna matching by such a capacitive component, it is intended to add an appropriate amount of inductive component. As described above, as a method for adding an appropriate amount of the inductive component, a spiral type feeding structure is proposed as shown in FIG. 4.

Meanwhile, the shape of the power supply unit 1200 may be implemented in a spiral shape in an arbitrary polygon shape or a spiral shape in a circular shape in addition to a spiral shape in an arbitrary shape, that is, a spiral shape in a square shape. In this regard, the shape of the power supply unit 1200 may be an optimal shape of a spiral shape having a square shape as shown in FIG. 4. This is because, in an arbitrary polygonal shape or a spiral shape in a circular shape, which is not a square-shaped spiral shape, an area of a power feeding portion is 50% or more compared to an antenna, and may not be matched due to a strong capacitive component.

In this regard, the shape of the antenna 1100 is circular for miniaturization, but the polarization of the circular patch antenna 1100 is linear. Therefore, since the polarization of the antenna 1100 is linearly polarized, the electric field fields in the first and second feeding sections 1210 and 1220 to be fed must also be linear. Accordingly, there is an advantage that the linear electric field by the first and second power feeding units 1210 and 1220 to be fed can be optimally coupled to the antenna 1100 operating with linear polarization.

Therefore, the present invention proposes a circular patch antenna 1100 for miniaturization of the antenna. In addition, first and second feeders 1210 and 1220 in the form of a spiral in a square shape for optimal coupling with the antenna 1100 in the form of a linearly polarized wave are presented. The circular patch antenna 1100 and the first and second feeders 1210 and 1220 in a rectangular spiral form are not simple combinations of shapes, but a selection of shapes that are optimal for electrical characteristics.

In this regard, FIG. 5 shows an electric field shape in a spiral-shaped power feeding unit according to the present invention. Meanwhile, referring to FIGS. 3 to 5, the structure and operating principle of a feeding portion in a dual-linear polarized array with asymmetric small ground according to the present invention Is presented.

In this regard, the advantage of being able to make the V, H pole performance change according to the ground plane the same by utilizing the diagonal mode in the first and second feeding sections 1210 and 1220 fed diagonally There is this.

With respect to the operating principle and the structural features accordingly, there is an advantage that the thickness of the antenna module can be reduced by reducing a leaking field occurring at an outer edge of the antenna element. This leakage field reduction effect occurs not only in the antenna 1100 but also in the power supply unit 1200. Accordingly, there is an advantage that the power supply 1200 is insensitive to process errors in PCB design and manufacturing.

In addition, as the leakage field of the power supply unit 1200 is reduced, the spiral feeding line operates only as a feeding line, not as a radiating element. Accordingly, there is an advantage that the physical lengths of the first and second power feeding units 1210 and 1220 do not affect the resonance frequency of the antenna.

Specifically, the analysis of the operation of the antenna 1100 by the first and second feeders 1210 and 1220 in a spiral form according to the present invention is analyzed from a circuit view (Circuit View) and a field view (Electric Field View) as follows. same.

First, from a circuit point of view, the antenna 110 formed at a certain height in the ground plane may be regarded as an inductor component. Therefore, in the case of the antenna 110 having a low height, since the inductor component is small, the inductor component must be compensated by the power supply unit 1200. Therefore, in order to compensate the inductor component in the power supply unit 1200, the inductor component may be compensated by the first and second power supply units 1210 and 1220, which are spiral feeding lines.

Next, from the electric field field point of view, the coupled feed itself also radiates. At this time, even if the radiation efficiency is small, due to radiation by the power supply unit 1200, a gap of a predetermined height or more between the first and second power supply units 1210 and 1220 in the form of coupling power supply and the antenna 1100 is required. Therefore, a gap of a predetermined height or higher with the antenna 1100 due to radiation by the power supply unit 1200 is a factor in increasing the height of the entire antenna.

Therefore, through a configuration capable of suppressing the radiation of the power supply unit 1200 itself as much as possible, it is possible to narrow the distance between the power supply unit 1200 and the antenna 1100 to perform coupling power feeding, and accordingly, the height of the entire antenna Can be reduced.

In this regard, in the first and second feeding sections 1210 and 1220, the directions of the currents formed in the adjacent arms adjacent to the outermost arms are reversely formed to cancel each other so as to cancel each other out. The length between the adjacent arms is determined. That is, referring to FIG. 5, it can be seen that, in the first and second feeding parts 1210 and 1220, arrow directions that are directions of electric fields in the outermost arm and the adjacent arm are formed in opposite directions.

In general, when a spiral type device is operated as a radiating element, the directions of the electric fields in the outermost arm and the adjacent arm are not formed in opposite directions, but may be formed in the same direction. On the other hand, the spiral type device proposed in the present invention acts not as a radiating element, but as a feeding part, and in order to reduce the leakage field, the direction of the electric field in the outermost arm and the adjacent arm is formed in the opposite direction so that each length and The mutual separation distance can be determined.

Accordingly, as the currents cancel each other according to the determined length, the leakage field may be reduced to decrease the thickness of the module in which the antenna 1100 is disposed.

On the other hand, referring to Figures 3 and 4, the antenna according to the present invention can be implemented in the form of a double feed. In this regard, the antenna may be a circular patch array antenna arranged in a plurality in a horizontal direction. At this time, each antenna element 1100 of the array antenna may be dual fed by the first and second feeders 1210 and 1220.

Specifically, the first and second power feeding units 1210 and 1220 are formed with the same length and width, and may be symmetrical left and right based on the circular patch antenna 1100. Accordingly, there is an advantage in that the electric fields formed in the first polarization direction and the second polarization direction of the circular patch antenna 1100 by the first and second feeding units 1210 and 1220 may be formed in a symmetrical shape. Accordingly, the size of the signals transmitted and received in the first polarization direction and the second polarization direction of the circular patch antenna 1100 is the same, and thus has the advantage of performing a multi-input multiple-output (MIMO) operation.

Specifically, the first and second feeding units 1210 and 1220 are fed orthogonally in a diagonal direction to transmit or receive the orthogonal diagonal first and second polarization signals. have.

On the other hand, as described above, the antenna 1100 includes an active patch antenna 1110 that is coupled and fed by the first and second feeders 1210 and 1220. In addition, the antenna 1100 may further include a stack patch antenna 1120 disposed on the active patch antenna 1110 and configured to operate in a wide band.

In this case, the active patch antenna 1110 and the stack patch antenna 1120 reduce the size of an antenna radiator, and can be formed with the smallest size to prevent interference between the antenna radiators (circulator) patch array antenna).

In addition, in a circular patch array antenna, the diameter of the stack patch antenna 1120 may be set larger than the diameter of the active patch antenna 1110 so that the gain of the antenna radiator is optimized. As such, as the diameter of the stack patch antenna 1120 is designed to be larger, there is an advantage that the gain of the antenna radiator may have a larger value.

In addition, since the active patch antenna 1110 is formed smaller than the stack patch antenna 1120, the area difference between the active patch antenna 1110 and the spiral-shaped first and second second feeders 1210 and 1220 is reduced. can do. Accordingly, there is an advantage that it is possible to alleviate the sensitivity of antenna performance due to manufacturing and alignment errors of antennas and feeders formed on multiple substrates.

In this regard, FIG. 6 is a conceptual diagram showing deterioration of antenna performance according to manufacturing or alignment error of a certain number in the antenna structure according to the present invention. In this regard, in the implementation of the (array) antenna for 5G, even if an error of the same numerical value is caused due to a wavelength difference, an effect on antenna performance may be greater than a low frequency.

As shown in Table 2 and Fig. 6 (a), if the spacing error between antennas or the alignment error between multilayer substrates is 1 mm, the rate of change is only 0.01 at 3 GHz.

frequency		1mm change
3 GHz	Rate of change 0.01
30 GHz	Rate of change 0.1

However, in the millimeter wave band such as 30 GHz, the change rate due to the error of 1 mm corresponds to 0.1, which corresponds to 1/10 of the wavelength. Therefore, the antenna performance may be greatly deteriorated by an error of 1 mm corresponding to 1/10 of the wavelength.

Referring to FIG. 6(b), it can be seen that the theoretical reflection coefficient value according to the simulation has a value of −10 dB or less, but the reflection coefficient value is deteriorated to a value of −10 dB or more due to an error or offset of 1 mm.

In this regard, in the present invention, the sum of the areas of the first and second feeders 1210 and 1220 in a spiral form may be 40 to 50% of the area of the antenna 1100, particularly the active patch antenna 1110. . Accordingly, the first and second feeders 1210 and 1220 in the form of a spiral do not operate as radiators, and thus the antenna can be miniaturized, and the antenna performance sensitivity due to antenna manufacturing and alignment errors can be reduced. have.

In addition, as described above, the active patch antenna 1110 is formed smaller than the stack patch antenna 1120, the active patch antenna 1110 and the first and second second feeders 1210 and 1220 in a spiral form The area difference with can be reduced. Accordingly, there is an advantage that it is possible to alleviate the sensitivity of antenna performance due to manufacturing and alignment errors of antennas and feeders formed on multiple substrates.

On the other hand, as described above, the shape of the substrate on which the circular patch array antenna is arranged is asymmetrical in that the horizontal area in the horizontal direction is smaller than the ground area in the vertical direction so that it can be disposed on the side of the electronic device. It may be in the form of an asymmetric ground.

In this regard, the present invention utilizes a Diagonal Mode in a dual-linear polarized array with asymmetric small ground. Therefore, it is advantageous in that antenna performance can be maintained even in electronic devices having a small thickness by making the performance change according to the ground plane the same.

In this regard, FIG. 7 compares polarization characteristics in the dual mode according to the present invention. 7(a) shows a field shape in a horizontal/vertical mode according to a feeding direction of 0 degrees and 90 degrees in an asymmetrical ground structure. In particular, there is a problem in that the center of the field is intensively arranged in the lower part in the vertical mode due to the space where the width of the substrate is limited.

On the other hand, referring to Figure 7 (b), even in an asymmetrical ground structure, the field distribution in a diagonal mode according to the feed direction of +45 and -45 degrees has a symmetrical shape. Therefore, through the feeding structure of the +45 degree and -45 degree slant mode, the antenna performance is kept the same even in the asymmetrical ground structure, so that an electronic device having a small thickness can be provided even when the antenna is disposed on the side. It has the advantage of being.

On the other hand, Figure 8 shows the same antenna characteristics for each polarization in the feeding method using a diagonal mode in the asymmetrical ground structure as in the present invention.

Referring to (a) and (b) of FIG. 8, it can be seen that the reflection coefficient characteristics S ₁₁ and S ₂₂ by the first and second power feeding units appear the same. In addition, referring to (c) and (d) of FIG. 8, it is understood that the EIRP characteristics and the gain characteristics of the antenna are the same for the first and second polarizations (E ₁ = E _2, G ₁ = G ₂ ). Can.

Meanwhile, the antenna structure according to the present invention may be arranged in combination with an antenna operating in a different frequency band. For example, the antenna according to the present invention operates in a first frequency band, and the antenna may be disposed within a certain space with a second antenna operating in a second frequency band, which is a different frequency band. At this time, both the antenna and the second antenna according to the present invention can operate in the millimeter wave band. For example, the antenna and the second antenna according to the present invention may operate in the 28 GHz band and the 39 GHz band, respectively, but are not limited thereto and may be changed according to application.

9 shows various examples in which a circular patch antenna according to the present invention is disposed together with a square patch antenna operating in different frequency bands. Referring to FIG. 9(a), a square patch antenna 1300 operating in different frequency bands may be disposed between the circular patch antennas 1100 according to the present invention. This one-dimensional array antenna has the advantage of maintaining a low height, occupying a small space, and disposing different antennas on the side of the electronic device.

Meanwhile, FIG. 9(b) is a structure in which a square patch antenna 1300b operating in another frequency band according to the present invention is disposed on a two-dimensional plane, and a circular patch antenna 1100b is disposed therebetween. Therefore, this structure has an advantage in that the antenna placement height is slightly increased, but the antenna beam can be formed to have directivity in the horizontal/vertical direction.

On the other hand, when the combined array (Combined Array) configuration as shown in Figure 9 (a), (b), the TM110 Mode of the circular patch antenna operating in the 28 GHz band (Higher Mode) of 39 GHz and enough It occurs at 45.8 GHz apart. Accordingly, there is an advantage in that the level of interference from the circular patch antenna to the rectangular patch antenna is greatly reduced.

Therefore, the circular patch antenna according to the present invention can reduce interference with other antennas due to the higher order mode as well as shifting the frequency in the higher order mode. Therefore, there is an advantage in that isolation of the 39 GHz band between the antenna according to the present invention and the second antenna can be secured.

Meanwhile, the optimized characteristics of the spiral-type dual feeder and the stacked circular patch antenna according to the present invention and the operation principle thereof are as follows. In this regard, FIG. 10 shows an equivalent circuit for explaining the operation of a spiral-type dual feeder and a stacked circular patch antenna according to the present invention.

Meanwhile, referring to FIGS. 4 and 10, the first and second signals are the active patch antenna 1110, that is, the driven patch, through the coupling feeding of the first and second feeding units 1210 and 1220. 1110). At this time, in order to reflect the effect of this coupling feeding, the first transformer 1111 may be disposed between the feeding unit 1200 and the driving patch 1110.

Meanwhile, the first and second electric fields in the active patch antenna 1110, that is, the driving patch 1110 are transmitted to the stack patch antenna 1120, that is, the parasitic patch 1120 through coupling. At this time, in order to reflect the influence of the coupling between the antennas, a second transformer 1121 may be disposed between the driving patch 1110 and the parasitic patch 1120.

Meanwhile, a stacked patch with coupled spiral feed is proposed as a method for implementing a triple band of a 5G patch array antenna according to the present invention. In this regard, there is a problem that the antenna is not implemented at a low height in the same manner as the square patch antenna of the microstrip line method.

However, in the present invention, a feeding method and a frequency independent spiral structure that suppress a leakage field caused by an antenna radiator are introduced into the feeding portion. Therefore, the present invention proposes an antenna structure capable of realizing triple resonance even under a low height condition of 0.08λ or less.

In this regard, FIG. 11 shows a reflection coefficient characteristic and a dual polarization isolation characteristic of a circular patch antenna having a spiral type double feeder and a stack structure according to the present invention. 11(a) shows reflection coefficient characteristics and isolation characteristics as dB values according to frequency change, and FIG. 11(b) shows polar coordinates such as a Smith chart.

As shown in FIG. 11(a), it can be seen that three poles are generated in the reflection coefficient characteristics of the first and second feeders, and thus triple resonance occurs. In addition, it can be seen that the isolation characteristic is also optimized around the center frequency of 28 GHz. Also, as shown in FIG. 11( b), it can be seen that the triple resonance occurs due to the double resonance due to the two closed curves and the additional closed loop as the two closed curves partially overlap. At this time, since the closed curve is generated by coupling between antennas, it can be referred to as a coupling loop, and is generated by two coupling loops of triple resonance according to the present invention.

On the other hand, in the dual polarized antenna of the spiral feeding structure according to the present invention, the feeding part 1200 and the respective antenna elements 1110 and 1120 may be formed in a multi-layered substrate structure. Specifically, the antenna structure according to the present invention can be configured as a 3 Layer FPCB + 2 CCL layer. At this time, the cover-layer is for preventing Cu oxidation. Meanwhile, one of the CCL layers is a form in which Cu is removed, and the other can be implemented in a patch shape on both sides. Meanwhile, the power supply unit 1200 may be implemented as an FPCB in a spiral feeding form. On the other hand, each antenna element 1110, 1120 may be implemented in the form of a CCL layer as a stacked circle patch.

On the other hand, with regard to manufacturing and alignment errors, in the implementation of a patch array antenna for millimeter wave (mmWave), the multi-layer tolerance level can be implemented at a process level of about 0.1 mm in 0.2 mm z-axis in the xy axis. Do. Therefore, it is highly unlikely to be implemented according to a design scheme according to the tolerance level, and in order to satisfy a stricter tolerance level, a problem may arise in which a unit price is increased with the introduction of a very precise process machine.

However, the dual polarization antenna of the spiral feeding structure according to the present invention has an advantage of presenting a robust antenna structure capable of securing antenna performance even at a current process variation level.

On the other hand, the dual polarization antenna of the spiral feeding structure according to the present invention may be configured in the form of an array antenna. In this regard, FIG. 12 shows the structure of a dual polarized circular patch array antenna of a spiral feeding structure according to the present invention.

12 (a) is a front view of an array antenna disposed on the side of an electronic device according to the present invention. On the other hand, Fig. 12 (b) is a side view of the array antenna disposed on the side of the electronic device according to the present invention.

Referring to Figure 12 (a), a transceiver circuit (transceiver circuit, 250) may be electrically connected to the array antenna (1000). At this time, the connector may be connected to the transceiver circuit 250 for testing purposes, but is not limited thereto, and the transceiver circuit 250 may be electrically connected to other communication circuits through various means (connectors, pins, flexible cables, etc.). have.

On the other hand, referring to Figure 12 (b), the width of the substrate in the asymmetrical ground structure according to the present invention can be implemented to be less than 3.5mm, there is an advantage that can be placed on the side of the electronic device.

On the other hand, the array antenna 1000 according to the present invention is disposed on a substrate, may be disposed on the side of the electronic device, is configured to include a plurality of antenna elements spaced from each other.

On the other hand, referring to FIGS. 4 and 12, a feeding part composed of a spiral-type feeding line arranged under the array antenna 1000 and coupling and feeding each antenna element of the array antenna 1000. unit, 1200). In this case, the power feeding part 1200 may include first and second power feeding parts 1210 and 1220 for feeding the coupling so that the antenna element resonates with double polarization. Here, the first and second feeding units 1210 and 1220 include a spiral feeding type feeding unit and a feeding line connected thereto.

Meanwhile, the first and second feeders of the array antenna according to the present invention may be connected to different circuits to perform operations such as multiple input multiple output (MIMO) or diversity transmission and reception. In this regard, FIG. 13 shows a structure in which a dual polarization array antenna of a spiral feeding structure according to the present invention is connected to a transmission/reception circuit. In this regard, all of the above descriptions for a single antenna are applicable to an array antenna. In addition, all of the contents to be described in the following array antenna are applicable to a single antenna.

Referring to FIG. 13, the first power supply unit 1210 may be coupled by the first power combiner 1212 and connected to the first power amplifier 210 and the first receive amplifier 310. In addition, the second power supply unit 1220 may be coupled by the second power combiner 1222 to be connected to the second power amplifier 220 and the second receive amplifier 340.

Specifically, the electric field is supplied to the antenna element 1100 by the first feeding unit 1210, and an electric field is formed in a first polarization direction to operate as the first antenna. In addition, the electric field is formed by the second feeding unit 1220 in the second polarization direction of the antenna element 1100 to operate as the second antenna.

At this time, the second polarization direction is formed perpendicular to the first polarization direction, so that the first antenna ANT1 and the second antenna ANT2 may operate as a multiple input multiple output (MIMO) antenna. In this regard, the baseband processor 4000 may provide different information through the first and second antennas ANT1 and ANT2 if the SINRs of the first and second antennas ANT1 and ANT2 are both above a threshold. The transceiver circuit 250 can be controlled to receive the first and second information.

On the other hand, if the SINRs of the first and second antennas ANT1 and ANT2 are both below the threshold, the transceiver circuit 250 may be controlled to receive the same information through the first and second antennas ANT1 and ANT2. Can.

In addition, if the SINR is greater than or equal to a threshold value in only one of the first and second antennas ANT1 and ANT2, the transceiver circuit 250 may be controlled to receive information only through the corresponding antenna.

On the other hand, the first and second feeders 1210, 1220, the outermost arm (outermost arm) and the adjacent outer arm (adjacent arm) in the direction of the current formed in the opposite direction is formed so as to cancel each other and the outermost arm and the The length between adjacent arms can be determined. Accordingly, as the currents cancel each other according to the determined length, the leakage field may be reduced to reduce the thickness of the module in which the antenna is disposed.

On the other hand, the antenna is a circular patch array antenna (1000) arranged in a plurality in a horizontal direction (horizontal direction), and each antenna element 1100 of the array antenna 1000 includes first and second feeders ( 1210, 1220).

Meanwhile, referring to FIG. 4, the first and second power feeding units 1210 and 1220 are formed with the same length and width, and can be configured symmetrically left and right based on the circular patch antenna 1100. have.

In the above, an electronic device having an antenna operating in a 5G band according to the present invention has been described. The technical effects of the electronic device having an antenna operating in the 5G band are as follows.

An electronic device having an antenna according to the present invention has an advantage of providing an antenna configuration capable of alleviating the sensitivity of a change in performance of an antenna element using a spiral-type feeding structure and an electronic device supporting the antenna configuration. have.

According to the present invention, it is possible to provide an electronic device having a configuration capable of being arranged in a low-profile structure on the side of the electronic device by adopting a circular patch form having a reduced size and through spiral feeding in a specific feeding direction. It has the advantage of being able to.

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

In the context of the present invention described above, the design of the power supply unit consisting of the antenna and the spiral-shaped feeding line and its driving can be implemented as computer readable code on a medium in which a program is recorded. The computer-readable medium includes all kinds of recording devices in which data readable by a computer system is stored. Examples of computer-readable media include a hard disk drive (HDD), solid state disk (SSD), silicon disk drive (SDD), ROM, RAM, CD-ROM, magnetic tape, floppy disk, and optical data storage device. This includes, and is also implemented in the form of a carrier wave (eg, transmission over the Internet). In addition, the computer may include a control unit 180 of the terminal. Accordingly, the above detailed description should not be construed as limiting in all respects, but should be considered illustrative. The scope of the invention should be determined by rational interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention.

Claims (16)

1. In electronic devices,

   An antenna disposed on the side of the electronic device and disposed on the substrate; And

   It is disposed under the antenna and includes a feeding unit composed of a spiral-type feeding line that feeds the antenna to the coupling.

   The power supply unit includes first and second power supply units for supplying coupling so that the antenna resonates with double polarization.
2. According to claim 1,

   The first and second feeding parts,

   The length between the outermost arm and the adjacent arm is determined so that the directions of the currents formed in the outermost arm and the adjacent arm are reversed and cancel each other,

   An electronic device that reduces a thickness of a module in which the antenna is disposed by reducing a leakage field as the currents cancel each other along the determined length.
3. According to claim 1,

   The antenna is a circular patch array antenna arranged in a plurality in a horizontal direction, and each of the array antennas is dual-fed by the first and second feeders. device.
4. According to claim 1,

   The first and second feeding parts are formed of the same length (length) and width (width), the left and right symmetrical with respect to the circular patch, the electronic device.
5. According to claim 1,

   The sum of the areas of the first and second feeding parts is 40 to 50% of the area of the antenna, the electronic device.
6. According to claim 1,

   The antenna,

   An electronic device that is fed orthogonally in a diagonal direction by the first and second feeding units to transmit or receive the orthogonal diagonal first and second polarization signals.
7. According to claim 1,

   The antenna,

   An active patch antenna coupled and fed by the first and second feeders; And

   And a stack patch antenna disposed on the active patch antenna and configured to operate in a broadband manner.
8. The method of claim 7,

   The active patch antenna and the stack patch antenna,

   Electronic device, characterized in that it consists of a circular patch array antenna that can be formed to the smallest size to reduce the antenna radiator (antenna radiator) size and prevent interference between the antenna radiators.
9. The method of claim 8,

   In the circular patch array antenna, the electronic device, characterized in that the diameter of the stack patch antenna is set larger than the diameter of the active patch antenna so that the gain of the antenna radiator is optimized.
10. The method of claim 8,

    The shape of the substrate on which the circular patch array antenna is disposed is:

    An electronic device in which a horizontal ground area is formed in an asymmetrical ground form of less than that of a vertical direction so as to be disposed on the side surface of the electronic device.
11. In electronic devices,

    An array antenna disposed on the side of the electronic device and disposed on the substrate; And

    It is disposed below the array antenna and includes a feeding unit composed of a spiral-type feeding line for coupling and feeding each antenna element of the array antenna.

    The power supply unit includes a first power supply unit and a second power supply unit for feeding the coupling so that the antenna element resonates with double polarization.
12. The method of claim 11,

    The first power supply unit is coupled by a first power combiner, connected to the first power amplifier and the first receive amplifier,

    The second power supply unit is coupled by a second power combiner, characterized in that connected to the second power amplifier and the second receive amplifier, an electronic device.
13. The method of claim 11,

    It is fed by the first feeder and an electric field is formed in the first polarization direction on the antenna element to operate as a first antenna,

    It is fed by the second feeding unit and an electric field is formed in the second polarization direction on the antenna element to operate as a second antenna,

    The second polarization direction is formed perpendicular to the first polarization direction, the first antenna and the second antenna is characterized in that it operates as a multi-input multiple output (MIMO) antenna, electronic device.
14. The method of claim 11,

    The first and second feeding parts,

    The length between the outermost arm and the adjacent arm is determined so that the directions of the currents formed in the outermost arm and the adjacent arm are reversed and cancel each other,

    An electronic device that reduces a thickness of a module in which the antenna is disposed by reducing a leakage field as the currents cancel each other along the determined length.
15. The method of claim 11,

    The antenna is a circular patch array antenna arranged in a plurality in a horizontal direction, and each of the array antennas is dual-fed by the first and second feeders. device.
16. The method of claim 15,

    The first and second feeding parts are formed of the same length (length) and width (width), the left and right symmetrical with respect to the circular patch, the electronic device.

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