KR20150128185A - Antenna - Google Patents

Abstract

The antenna of the present invention includes a first antenna. And a second antenna disposed inside the first antenna. And a switching pole connecting the first and second antennas, wherein the first antenna has a coil including a plurality of turns between the inside and the outside.

Description

Antenna {ANTENNA}

The present invention relates to an NFC (Near Field Communication) antenna having a built-in antenna for Wi-Fi (Wireless Fidelity).

A portable terminal for mobile communication is a terminal for wirelessly connecting with a desired other party anytime and anywhere by moving freely within a service area formed by a base station for mobile communication, and will be described as a 'mobile terminal' in the following description.

In addition to the wireless communication function, the mobile terminal has a number of functions such as a camera, an MP3 player, a sound recorder, an e-book, and the like.

In particular, in recent years, a navigation function for providing a GPS antenna and an electronic map to provide movement direction and current position information, and a wireless connection using an NFC (Near Field Communication) And a smart card function for electronic settlement like a credit card have been developed and added, and further development can be continued and new functions can be added in the future.

Generally, in mobile communication, frequencies of 800 MHz and 1.8 GHz are used, GPS uses 1.57 GHz and 1.22 GHz, terrestrial DMB uses frequencies of 174-214 MHz, WiFi The bluetooth system uses the frequency band of 2.4 GHz, and the near frequency radio communication system uses the frequency of 13.56 MHz.

In particular, the ENF antenna has recently been manufactured as a loop type antenna, and it has been possible to minimize the length and volume of the antenna for short distance wireless transmission and reception.

Such a loop antenna for ENF can be classified into a cross-sectional loop antenna attached to a case of a mobile terminal and a double-sided loop antenna attached to a battery of a mobile terminal. The cross-sectional loop antenna is formed at the beginning and end of an antenna pattern, Are provided on the same surface of the substrate, and the double-sided loop antenna has terminal portions formed on different surfaces of the substrate.

WI-FI (IEEE 802.11b) is a short-range wireless network that combines wireless technology with Hi-Fi (High Fidelity), and refers to wireless LAN technology that enables high-performance wireless communication.

In the meantime, the wireless LAN is a network in which a network is constructed by using radio waves or light without using a wired line in the network construction. The IEEE 802.xx, which is called Wi-Fi (IEEE 802.xx is a series of standards ) Is a wireless standard proposed by 3Com, Cisco Systems, Apple Computer, and Lucent Technologies.

Even only a year or two ago, the wireless LAN sector was not optimistic to expand the system scale due to the narrow communication area and the limitations of applications.

In addition, when connecting a wireless LAN using a terminal such as a notebook equipped with a wireless modem, since the communication area is very small and the signal level is low, the user can move the terminal to a communication area, There were frequent visits to the museum.

However, recently, with the emergence of smart phones, the Wi-Fi market has grown rapidly, telecom companies have been investing heavily in competition, and a large number of small base stations have been installed, Fi zone) is being solved.

However, mounting both the Wi-Fi antenna and the NFC antenna in the mobile terminal leads to an increase in the volume of the mobile terminal, which is a disadvantage of the user.

An aspect of the present invention is to provide an antenna incorporated in a terminal capable of wireless communication, which is capable of both Wi-Fi communication and NFC communication with a built-in Wi-Fi antenna.

An antenna according to an embodiment of the present invention includes a first antenna and a second antenna disposed inside the first antenna and includes a switching pole for connecting the first antenna and the second antenna, And a coil including a plurality of winding turns between the inner side and the outer side.

In the antenna according to an embodiment of the present invention, the first antenna is an NFC antenna, and the second antenna is a WiFi antenna.

According to the embodiment of the present invention, it is possible to reduce the cost in installing the antenna in the terminal without the need of designing a separate Wi-Fi using antenna by connecting the antenna for Wi-Fi use to the NFC antenna, and miniaturization and integration of the terminal can be realized.

1 is a top plan view of an NFC antenna with a built-in Wi-Fi antenna according to an embodiment of the present invention.
2 is a side view of an NFC antenna with a built-in Wi-Fi antenna according to an embodiment of the present invention.
3 is a graph illustrating frequency responses of a Wi-Fi utilizing antenna and an NFC antenna.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. It should be understood, however, that there is no intention to limit the scope of the present invention to the embodiment shown, and other embodiments which are degenerative by adding, changing or deleting other elements or other embodiments falling within the spirit of the present invention Can be proposed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In addition, numerals (e.g., first, second, etc.) used in the description of the present invention are merely an identifier for distinguishing one component from another.

Although the term used in the present invention is a general term that is widely used at present, there are some terms selected arbitrarily by the applicant in a specific case. In this case, since the meaning is described in detail in the description of the corresponding invention, It is to be understood that the present invention should be grasped as a meaning of a non-term.

Also, in this specification, when an element is referred to as being "connected" or "connected" with another element, the element may be directly connected or directly connected to the other element, It should be understood that, unless an opposite description is present, it may be connected or connected via another element in the middle.

That is, in the following description, the word 'comprising' does not exclude the presence of other elements or steps than those listed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate a thorough understanding of the present invention, the same reference numerals are used for the same means regardless of the reference numerals.

Hereinafter, the first antenna may be an NFC antenna that performs short-range communication, and the second antenna may be a Wi-Fi antenna that performs Wi-Fi communication.

The structure and operation of the first antenna 101 in which the second antenna 103 is incorporated will be described with reference to FIGS. 1 and 2. FIG.

1 and 2, an antenna according to an embodiment of the present invention may include a first antenna 101, a second antenna 103, and a switching pole 201, Not limited.

A loop antenna is shown in FIG. 1 in the form of a first antenna 101, but is not limited thereto.

The first antenna 101 may be terminated in one area 102 outside the antenna, starting from one area 104 inside the antenna.

The first antenna 101, the second antenna 103 and a support 105 for fixing the switching pawl 201 may be connected to one region 102 outside the first antenna 101. [

The support 105 may be a ground portion of the first antenna 101 and the second antenna 103, but is not limited thereto.

The second antenna 103 may be connected to an inner starting point 104 of the first antenna 101. The second antenna 103 may be connected to the outer end point 102 of the first antenna 101. The second antenna 103 may be connected to the other end of the support 105 connected to the outer end point 102 of the first antenna 101. However, the present invention is not limited thereto.

2, the second antenna 103 may be connected to the first antenna 101 via the switching pawl 201. In addition,

Hereinafter, it is assumed that the second antenna 103 is formed in one area 104 inside the first antenna 101, but the present invention is not limited thereto.

The second antenna 103 may be positioned on the same plane as the plane on which the first antenna 101 is located when the second antenna 103 is formed in one area 104 of the first antenna 101. [

Also, the second antenna 103 may be located on a plane spaced by z in the plane in which the first antenna 101 is located.

Also, the second antenna 103 may be positioned on a straight line perpendicular to the plane in which the first antenna 101 is located, but is not limited thereto.

The switching pawl 201 may be configured to connect the first antenna 101 and the second antenna 103, but is not limited thereto.

Hereinafter, an operation method of the first antenna 101, the second antenna 103, and the switching pawl 201 will be described with reference to FIG.

As shown in FIG. 3, the frequency response of the first antenna 101 is the same as the left solid line graph of FIG.

As shown in the graph, the resonance frequency of the first antenna 101 may be designed to be 13.56 MHz, and the definition of the resonance frequency and the method of designing the antenna for the resonance frequency are self-explanatory.

As shown in the graph, the resonant frequency of the second antenna 103 may be designed to be 2.45 GHz, which is in accordance with the communication standard for the second antenna 103. [ Similarly, the antenna design method for the resonance frequency is omitted.

The first antenna 101 exchanges a short-range wireless signal with an NFC communication apparatus (not shown) during a short-distance communication of 13.56 MHz among the communication of the terminal equipped with the antenna.

The second antenna 103 exchanges a communication signal with a Wi-Fi device (not shown) during 2.45 GHz communication among the communication of the terminal equipped with the antenna.

The operation of the switching pole 201 will be described.

The switching pawl 201 can determine the communication mode of the terminal equipped with the antenna.

The communication mode may include, but is not limited to, WiFi mode and NFC mode.

When the terminal desires to perform the Wi-Fi mode in the communication mode, the switching pawl 201 may activate the Wi-Fi antenna by receiving a control signal from a controller (not shown) in the terminal.

When the Wi-Fi mode is performed, the Wi-Fi antenna exchanges communication signals with a Wi-Fi using device (not shown). When the WiFi mode is performed, the NFC antenna 101 serves as a ground (GND, Ground) of the Wi-Fi antenna.

When the terminal desires to perform the NFC mode in the communication mode, the switching pawl 201 may activate the NFC antenna 101 by receiving a control signal from a control unit (not shown) in the terminal.

When the NFC mode is performed, the NFC antenna 101 exchanges communication signals with an NFC communication apparatus (not shown).

According to an embodiment of the present invention, the above-described method can be implemented as a code readable by a processor on a medium on which a program is recorded. Examples of the medium that can be read by the processor include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, etc., and may be implemented in the form of a carrier wave (e.g., transmission over the Internet) .

The embodiments described above are not limited to the configurations and methods described above, but the embodiments may be configured by selectively combining all or a part of the embodiments so that various modifications can be made.

Claims (5)

A first antenna;
A second antenna disposed inside the first antenna; And
And a switching pole connecting the first and second antennas,
Wherein the first antenna has a coil including a plurality of turns between the inner side and the outer side.
The method according to claim 1,
Wherein the first antenna is an NFC antenna and the second antenna is a WiFi antenna.
The method according to claim 1,
Wherein the WiFi antenna is spaced apart from the NFC antenna and is coupled to a WiFi antenna located on a plane parallel to the NFC antenna.
The method of claim 3,
Wherein the switching pawl activates the WiFi antenna.
The method of claim 3,
Wherein the NFC antenna serves as a ground for the Wi-Fi antenna.

Images