KR20190006933A - Credit card apparatus including wireless comunication function, and method for manufacturing said credit card - Google Patents

Abstract

One aspect of the present invention discloses a credit card apparatus having a wireless communication function. The apparatus includes an antenna, a wireless communication module electrically connected to the antenna, a battery for supplying power to the antenna and the wireless communication module, and a case surrounding the antenna, the battery, and the wireless communication module. The credit card apparatus can prevent a credit card from being lost.

Description

TECHNICAL FIELD [0001] The present invention relates to a credit card device having a wireless communication function, and a method of manufacturing the credit card device. BACKGROUND OF THE INVENTION 1. Field of the Invention [0002]

The present invention relates to a credit card device, and more particularly, to a credit card device having a wireless communication function.

For payment, most modern people use credit or check cards instead of cash, and credit cards often lose money, even though they play like money. For example, personalized communication terminals and wallets such as mobile phones often become a necessity when going out, or when they lose a lot while working outside, they sometimes struggle to find a place they can not remember. In this case, in the case of the personalized communication terminal, although the position can be known through sound or vibration generated when calling the other communication device, the wallet can not generate sound or vibration, and thus the position can not be known.

An object of an embodiment of the present invention is to provide a credit card device having a wireless communication function by incorporating a wireless communication function into a credit card to prevent loss of the credit card and a method of manufacturing the device.

According to an aspect of the present invention, there is provided a credit card device having a wireless communication function, including: an antenna; a wireless communication module electrically connected to the antenna; And a case surrounding the antenna, the battery, and the wireless communication module.

The antenna may include a multi-band chip antenna.

The multi-band chip antenna may include an antenna usable for at least two bands of a short-range communication band, a broadband communication band, and a GPS (Global Positioning System) band.

The antenna may include an LTCC antenna (Low Temperature Co-fired Ceramic antenna).

An insulating dielectric disposed on the case, and an electrode disposed on the insulating dielectric, wherein the antenna and the wireless communication module may be disposed on the electrode.

And a passivation element between the antenna and the wireless communication module.

Wherein the first electrode unit and the second electrode unit are disposed on the insulating oil, the antenna and the first wireless communication module are disposed on the first electrode unit, the second wireless communication module and the passivation element are disposed on the second electrode unit, And the passivation element on the second electrode part may be electrically connected to the battery.

And a flexible circuit board (FPCB) disposed on the case, wherein the antenna and the wireless communication module are disposed on the flexible circuit board and are electrically connected to the flexible circuit board, and at least a part of the flexible circuit board And may be electrically connected to the battery.

The antenna is disposed on the case, the wireless communication module is disposed on a substrate of the antenna, and at least a part of the substrate of the antenna is electrically connected to the battery.

Wherein at least one side of the case includes a payment function area for at least one of a swipe function and an insert function and the antenna and the wireless communication module may be disposed in an area other than the payment function area .

The antenna and the wireless communication module may be disposed in a first plane of the credit card device in an intersection area of a subarea from a portion approximately 0.6 inches from the upper edge and a portion approximately 2 cm away from the left edge in the right area.

The case may form an opening with respect to at least one of a vertical direction and a horizontal direction of the antenna.

The case may be made of at least one of aluminum and plastic.

When the case is aluminum, the antenna includes a dielectric substrate, a feed line disposed on a first surface of the dielectric substrate, a slot antenna portion including a slot formed on a second surface of the dielectric substrate, And a cavity formed in close contact with a second surface of the dielectric substrate, the cavity including a cavity surface opposed to a second surface of the dielectric substrate, the cavity including a cavity resonator based on a waveguide have.

When the case is made of plastic, the antenna is connected to an antenna (the antenna has a diameter, a radius and an input impedance) fed from a power source through a ground plane via a feed line, and an input impedance And may include structures based on meta-materials applied.

The antenna may be implemented as an ultra-slim waveguide antenna and may have a thickness of 1.5 mm or less.

The battery may have a wireless communication function including a planar battery.

In order to prevent discharge of the battery, a thin insulating layer may be inserted between the battery and an electrode for electrical contact between the battery and the wireless communication module.

The thin insulating layer may be connected to the outside through one opening of the case so that the thin insulating layer can be extracted by a user.

According to another aspect of the present invention, there is provided a method of manufacturing a credit card having a wireless communication function, including the steps of preparing a lower surface of a case, installing an antenna, Installing a communication module, inserting a battery for supplying power to the antenna and the wireless communication module, and applying a top surface of the case to surround the antenna, the battery, and the wireless communication module have.

The method further comprises printing the entire dielectric fluid on the lower surface of the case, and printing electrodes on the printed dielectric dielectric, wherein the antenna and the wireless communication module And a passivation element may be inserted between the installed antenna and the wireless communication module.

The method of manufacturing a credit card may further include installing a flexible printed circuit board (FPCB) on the lower surface of the case, wherein the antenna and the wireless communication module are installed on the flexible circuit board.

The step of installing the antenna may include the step of installing a substrate type antenna on the lower surface of the case, and the step of installing a wireless communication module electrically connected to the antenna may include: And installing the module.

According to the credit card device of the present invention, not only bluetooth but also more advanced 3-band modules (Bluetooth module, GPS (global positioning system) module, broadband frequency-based module (e.g. LoRa) The battery is built into a credit card, which generates a radio signal when lost, thereby preventing the credit card from being lost. In addition, the communication module can be implemented and implemented as an ultra-small module, so that a swipe and an insert function, which are basic functions of a credit card, can be directly used. At this time, a thin, light and durable package technology of a credit card size is applied so that a 3-band communication module and a slim battery can be included. Further, there is an effect that smooth radio communication can be performed based on software algorithm and control technology that can be operated by mixing LoRa and Bluetooth.

1 is a conceptual diagram illustrating a system including a credit card device having a wireless communication function according to an embodiment of the present invention;
FIG. 2 is a perspective view of a credit card device having a wireless communication function according to an embodiment of the present invention; FIG.
3 is a cross-sectional view of a credit card having a wireless communication function according to the first embodiment of the present invention,
4 is a flowchart illustrating a method of manufacturing a credit card having a wireless communication function according to a first embodiment of the present invention.
5 is a sectional view of a credit card having a wireless communication function according to a second embodiment of the present invention;
6 is a flowchart illustrating a method of manufacturing a credit card device having a wireless communication function according to a second embodiment of the present invention.
7 is a cross-sectional view of a credit card device having a wireless communication function according to a third embodiment of the present invention,
FIG. 8 is a flowchart illustrating a method of manufacturing a credit card having a wireless communication function according to a third embodiment of the present invention.
9 is a conceptual view showing a mounting area of a credit card device having a wireless communication function according to an embodiment of the present invention corresponding to a swipe function;
10 is a conceptual view showing a mounting area of a credit card device having a wireless communication function according to an embodiment of the present invention corresponding to an insert function;
11 is a conceptual view showing a mounting area of a credit card device having a wireless communication function according to an embodiment of the present invention, which corresponds to a swipe function and an insert function.
12A to 12F are a perspective view and a cross-sectional view of a micro-sized antenna device incorporated in a credit card device having a wireless communication function according to an embodiment of the present invention,
FIGS. 13A to 13E are top views of an opening-type antenna in the form of a square substrate direct waveguide cavity support according to an embodiment of the present invention and antenna characteristics associated therewith,
FIGS. 14A to 14F are a plan view and an antenna characteristic of a rectangular-substrate direct waveguide cavity-type opening-type antenna according to another embodiment of the present invention,
Figs. 15A to 15J are views showing a plan view and an antenna characteristic of an I-shaped opening surface antenna of a square and rectangular waveguide cavity base,
16A to 16J are diagrams for explaining an electrical-small antenna device stacked with a shell-shaped meta-surface structure according to another embodiment of the present invention,
Figs. 17A to 17I are a plan view of a planar two-dimensional electric field-based electric-small antenna, a planar two-dimensional magnetic field based electric-small antenna,
Figures 18A-18E illustrate various exemplary shapes of an electrical miniature antenna including a meta-surface structure and corresponding antenna characteristics,
19A to 19E are views showing the shape of an antenna capable of controlling the wavefront of an electrical-small antenna with a meta-surface structure and the antenna characteristics thereof,
20 is a block diagram schematically showing a configuration of a credit card device having a wireless communication function according to an embodiment of the present invention;
FIG. 21 is a block diagram schematically showing a configuration of a credit card device having a wireless communication function and a wireless communication terminal interlocked with the credit card device according to an embodiment of the present invention; FIG.
22 is a flowchart illustrating a process in which a wireless communication terminal acquires position information according to a lost state determination according to a first embodiment of the present invention;
23 is a detailed flowchart specifically illustrating a process of determining whether or not a user has been lost,
FIG. 24 is a flowchart illustrating a process in which a wireless communication terminal acquires position information according to a lost state determination according to a second embodiment of the present invention;
FIG. 25 is a flowchart illustrating a process of determining a lost state of a wireless communication terminal according to a third embodiment of the present invention;
26 is a conceptual diagram for explaining a lost state determination method of FIG. 25,
27 shows a system in which a plurality of wireless communication terminals are linked to a credit card device,
28 is a diagram showing a display screen of a wireless communication terminal that executes a credit card loss prevention application,
29 is a block diagram illustrating a configuration for preventing battery discharge in a credit card device having a wireless communication function according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate the understanding of the present invention, the same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted.

A system comprising a credit card device with wireless communication capability

1 is a conceptual diagram illustrating a system including a credit card device having a wireless communication function according to an embodiment of the present invention.

Referring to FIG. 1, the wireless communication terminal 110 may interwork with the credit card device 120 through wireless communication. The wireless communication terminal 110 and the credit card device 120 may be connected to each other via a local communication protocol such as bluetooth or zigbee and / or a Wide Area Network (WAN) Evolution), LoRa (Long Range), and various other wide-area networks. According to an embodiment of the present invention, the wireless communication terminal 110 and the credit card device 120 can periodically check each other's positions through a short distance communication in a paired state, It can be interlocked in the way that the alarm function operates. Such a geo-fencing function can be used to prevent loss of the wallet including the credit card device 120. [ After the loss warning, the credit card device 120 acquires its own location information using the built-in GPS module and transmits the GPS coordinates in real time to a local and / or remote communication protocol (e.g., LoRa IoT nationwide network) To the wireless communication terminal (110). This makes it possible to prevent the loss of a wallet when a credit card is put in a wallet and to find a lost wallet.

According to an embodiment of the present invention, the wireless communication terminal 110 includes a mobile station (MS), a user equipment (UE), a user terminal (UT), a wireless terminal, an access terminal (AT) Or a mobile subscriber unit, a subscriber station, a cellular telephone, a wireless device, a wireless communication device, a wireless transmit / receive unit (WTRU) May be referred to as a mobile station, a personal digital assistant (PDA), a smart phone, a laptop, a netbook, a personal computer, a wireless sensor, a consumer electronics (CE) Various embodiments of the terminal 110 may be implemented in a cellular phone, a smart phone having wireless communication capability, a personal digital assistant (PDA) having wireless communication capability, a wireless modem, a portable computer having wireless communication capability, , A gaming device with wireless communication capabilities, music storage and playback appliances with wireless communication capabilities, Internet appliances capable of wireless Internet access and browsing, as well as portable units or terminals incorporating combinations of such features But is not limited thereto.

The credit card device 120 basically includes a credit card function and is equipped with a short distance and / or long distance wireless communication function as well as a GPS module. To this end, it may include a special antenna (micro antenna) and a battery, and a circuit structure. This will be described in detail later.

Implementation of credit card devices

2 is a perspective view of a credit card device having a wireless communication function according to an embodiment of the present invention. 2, a credit card device 200 according to an embodiment of the present invention includes at least one communication chip 210 and a circuit, a low temperature cofired ceramic (LTCC) circuit board 220 , A battery 240, and a case 230 surrounding the components.

Referring to FIG. 2, at least one communication chip and circuit 210 may include Bluetooth, GPS, and LoRa (wideband frequency based wireless communication) communication chips and circuits for driving the same. The communication chip 210 and the circuit 210 may include a plurality of communication chips 210. In this case, the communication chips 210 may be arranged close to the antenna transmission / reception path in consideration of the antenna transmission / reception path 250. [ The antenna transmission / reception path 250 is preferably formed with an opening for transmitting / receiving a radio signal.

The ceramic circuit board 220 may include a circuit board including metal and printed circuit features. The ceramic circuit board 220 may perform an antenna function. It is an antenna that is surface-mounted directly on a printed circuit board (PCB) board, and can be implemented in chip form with an antenna suitable for miniaturization and slimming of the terminal. This is a method of improving the performance by laminating patterns in a ceramic, and it can be realized as a multi-band antenna that covers a plurality of bands by thin-film multilayering as well as chip-type and / or flat- The multi-band may include at least a short-range communication band, a long-distance communication band, and a GPS-related communication band. In particular, it can be implemented as an embedded antenna in the device.

Furthermore, the antenna of the present invention may include a tri-band ultra-small waveguide antenna that is at least 40 times smaller than the conventional antenna. In case of a general antenna, a minimum thickness of 80 mm may be required when operating at 0.915 GHz. According to one embodiment of the present invention, a high dielectric constant (about 5 to 6) of ceramics and a credit card shape, An antenna (waveguide antenna) can be implemented. It may have a thickness of less than 2.5 mm, and preferably may be implemented as a three-band antenna having a thickness of less than or equal to 1 mm.

The battery 240 may include a planar battery. That is, a battery having a thin thickness and a wide plane can be used. The battery also preferably has a thickness of about 3 mm or less in consideration of the shape of the credit card. Which may include a lithium battery.

The case 230 may include an aluminum card case and / or a flexible plastic card case. At this time, the lengths of the length and the length of the credit card device of the present invention can be realized as 55 mm and 86 mm. However, the present invention is not limited thereto. The length is preferably about 45 to 65 mm. Further, it is preferable that the length is about 70 mm to 100 mm. The thickness is preferably about 3 mm or less in consideration of the configuration of the card reader, more preferably about 2.5 mm.

According to the embodiment of the present invention, the communication module including the antenna is not necessarily applied to a credit card, but may be applied to other devices implemented as a thin plate.

The credit card device according to various embodiments of the present invention is packaged to have a thin and light but very strong durability in the form of a credit card. In particular, the volume of the credit card (86 mm x 55 mm x 2 mm) is maintained in consideration of various user's wallet shape and usage environment. In addition, it can be implemented in various forms in consideration of various temperatures, humidity, and external impacts. This will be described with reference to FIGS. Further, the case of the credit card device may be composed of an aluminum card case and / or a plastic card case as described above. A ceramic circuit board can be used as the inside. In the embodiments of FIGS. 3 to 8, the LTCC chip and / or the communication chip each function as an antenna function and a signal transmission / reception function. However, the LTCC chip and / or the communication chip may be implemented as a hardware processor, Function can be provided. That is, it is obvious to those skilled in the art that the present invention can play a role as a control unit.

3 is a cross-sectional view of a credit card having a wireless communication function according to a first embodiment of the present invention. The credit card device according to the first embodiment of the present invention includes an antenna 310, communication modules 320-1 and 320-2, passivation configurations 325-1, 325-2 and 325-3, a battery 330 An insulating oil whole 350, electrodes 360-1 and 360-2, and enclosures 340-1 and 340-2 surrounding them.

Referring to FIG. 3, there is an entire insulating fluid 350 on the lower case 340-1 of the credit card device (which can be directly printed on the lower aluminum plate (metal-based printed circuit board)), Electrodes 360-1 and 360-2 are raised. A plurality of electrodes 360-1 and 360-2 may be disposed on the insulating oil 350 in accordance with the number of the communication modules. Electrodes 360-1 and 360-2 include conductors.

The LTCC substrate 310 and the passivation elements 325-1, 325-2, and 325-3 and the communication modules 320-1 and 322-2 that perform an antenna function on the electrodes 360-1 and 360-2, , 320-2: may be implemented in chip form) may be arranged side by side. A plurality of communication modules 320-1 and 320-2 may exist. According to an embodiment of the present invention, a first communication module chip (e.g., a Bluetooth chip) for a short-range communication band, a second communication module chip (e.g., a LoRa chip) A communication module chip may exist, and each of these communication modules may exist independently on the electrodes 360-1 and 360-2.

The passivation elements 325-1, 325-2, and 325-3 are used to perform appropriate processing on the surface or junction of the semiconductor device to block the harmful environment to stabilize device characteristics. In the first embodiment of the present invention One electrode 325-1 is disposed on the first electrode 360-1 between the LTCC substrate 310 and the first communication module chip 320-1 and on the second electrode 360-2, Two pieces 325-2 and 325-3 may be disposed at both ends of the second communication module 320-2. At least one of the passivation elements 325-3 may be electrically connected to the battery 330. [

The cases 340-1 and 340-2 may include a lower case 340-1 and an upper case 340-2. It is desirable that the cases 340-1 and 340-2 have a size enough to cover all other components. The case 340-1, 340-2 may have an upper opening 312 and a lateral opening 314. It is preferable that the antenna transmission and reception passage portion 312 in the upper portion 340-2 of the case is formed as an opening for smooth communication of wireless communication signals and the size of the opening 312 corresponds to the area of the LTCC substrate 310 May be desirable. In other words, it is preferable that the LTCC substrate 310 is formed in the vertical direction of the LTCC substrate 310 with a size equal to or larger than the size of the LTCC substrate 310. In addition, when the credit card device is viewed from the side, it is preferable that the opening 314 is formed in the lateral antenna transmission / reception passage portion between the lower substrate 340-1 and the upper substrate 340-2. The size (e.g., height) of the lateral opening 314 may be about 0.4 to about 0.4 mm to correspond to the combined height (or thickness) of the dielectric oil 350, the electrodes 360-1 and 360-2, Preferably 0.5 mm. The height from the LTCC substrate 310 to the upper case 340-2 may be about 0.6 mm or less, . At this time, the height of the entire credit card device is about 0.8 to 1 mm.

4 is a flowchart illustrating a method of manufacturing a credit card device having a wireless communication function according to the first embodiment of the present invention.

Referring to FIG. 4, first, the lower surface of the case is prepared (S410). The lower surface of the case can be realized as an aluminum case as described above. Then, the entire insulation oil is printed on the lower surface of the prepared case (S420). This is carried out by screen printing and is preferably about 10 to 15 mu m.

Then, the electrodes are printed (S430). This is also preferably performed by screen printing and is implemented at about 10 to 15 mu m. The electrodes are arranged at an appropriate distance depending on the number of communication modules and / or antenna substrates.

Then, an antenna chip and a communication chip are installed on the printed electrode (S440), and a passivation element is printed between the antenna and the communication chip (S450). The antenna chip preferably uses a multi-band antenna chip corresponding to the number of bands associated with the installed communication chip. Further, it is preferable that the passivation element is printed through screen printing and is implemented at about 10 to 15 mu m.

Then, the battery is inserted to be electrically connected to at least one of the passivation elements (S460). Then, an opening surface is formed in the vertical direction and the lateral direction of the antenna to generate a case upper surface (S470).

5 is a cross-sectional view of a credit card having a wireless communication function according to a second embodiment of the present invention. 5, the credit card device according to the second embodiment of the present invention includes a flexible circuit board 505, an antenna 510, a communication module 520, a battery 530, and a case 540-1, and 540-2.

Referring to FIG. 5, in the credit card device according to the second embodiment, an FPCB (Flexible Printed Circuit Board) 505 is mounted on the card case without the insulating oil as compared with the first embodiment. The card case is preferably made of a plastic material.

The LTCC substrate 510 and the communication chip 520 are arranged on the LTCC substrate 510 and the battery 530 is electrically connected to at least a part of the FPCB 505. At this time, as described above, a plurality of communication chips 520 may exist so as to correspond to a plurality of frequency bands. That is, the battery 530, the communication chip 530, and the LTCC substrate 510 may be electrically connected to each other through the FPCB 505.

According to the embodiment of the present invention, the antenna may use the LTCC chip antenna 510, but may be implemented in DUROID in some cases. At this time, it is preferable that the FPCB 505 is implemented at 150 mu m.

Further, the cases 540-1 and 540-2 may also have two or more openings 512 and 514, respectively. As in the first embodiment of FIG. 3, the LTCC substrate 510 may be formed in a manner such that the upper and lower sides of the LTCC substrate 510 are open.

At this time, the height from the case lower surface 540-1 to the communication chip 520 may be 0.5 to 0.6 mm (the thickness of the substrate is 0.15 mm), and the total thickness may be 0.9 to 1.1 mm . Accordingly, the height of the lateral opening 514 is preferably about 0.5 to 0.6 mm.

6 is a flowchart illustrating a method of manufacturing a credit card device having a wireless communication function according to a second embodiment of the present invention.

Referring to FIG. 6, first, the lower surface of the case is prepared (S610). The lower surface of the case can be realized as a plastic case as described above. Then, the flexible circuit board FPCB is mounted on the lower surface of the case (S620). Preferably about 130 to 170 mu m, and more preferably 150 mu m.

Then, an antenna chip and a communication chip are installed on the installed flexible circuit board (S630), and the antenna chip is preferably a multi-band antenna chip corresponding to the number of bands associated with the installed communication chip.

Then, the battery is inserted to be electrically connected to at least a part of the flexible circuit board (S640). Then, the upper surface of the case is formed by forming the opening surface in the vertical direction and the lateral direction of the antenna (S650).

7 is a cross-sectional view of a credit card having a wireless communication function according to a third embodiment of the present invention. 7, the credit card device according to the third embodiment includes an LTCC substrate 710, a communication module 720, a battery 730, and cases 740-1 and 740-2 surrounding the LTCC substrate 710, . ≪ / RTI >

Referring to FIG. 7, the LTCC substrate 710 is installed directly on the lower surface 740-1 of the plastic case according to the third embodiment of the present invention. Then, a structure in which a communication module (for example, a Bluetooth chip) is mounted on the LTCC substrate 710 can be formed. That is, the antenna and the communication chip may be formed on one substrate. At this time, a plurality of communication chips may be formed in accordance with a frequency band to be used. Also, at least a portion of the LTCC substrate 710 may be electrically connected to the battery 730.

The openings 712 and 714 of the cases 740-1 and 740-2 may be formed in the vertical direction and the lateral direction of the LTCC substrate 710 as in the first embodiment of FIG. At this time, the height from the lower surface 740-1 to the communication chip 720 may be 0.9 to 1 mm, and the thickness of the substrate may be 0.5 mm. In addition, when the height of the case upper portion 740-2 is added thereto, it can have a total thickness of 1.2 to 1.4 mm.

8 is a flowchart illustrating a method of manufacturing a credit card device having a wireless communication function according to a third embodiment of the present invention.

Referring to FIG. 8, first, the lower surface of the case is prepared (S810). The lower surface of the case can be realized as a plastic case as described above.

Then, the LTCC substrate is installed (S820). Then, the communication chip is installed on the installed LTCC substrate (S830). A plurality of communication chips may be installed.

Then, the battery is inserted to be electrically connected to at least a part of the LTCC substrate (S7840). Then, the upper surface of the case is formed by forming an opening in the vertical and lateral directions of the LTCC substrate (S850).

Implementation of a wireless-related configuration from a credit card

9 is a conceptual view illustrating a mounting area of a credit card device having a wireless communication function according to an embodiment of the present invention corresponding to a swipe function.

Referring to FIG. 9, a credit card may generally be used in a scratch form, i.e., a swipe manner. As shown in the right drawing of FIG. 9, in the use of the swipe method, the magnetic stripe 910 includes important credit information such as identification information of the card. Accordingly, it may be desirable to prevent portions (e.g., antennas, batteries, communication modules, etc.) associated with wireless communication in accordance with an embodiment of the present invention from affecting the magnetic stripe 910. Thus, for this purpose, it is desirable that components related to communications in accordance with an embodiment of the present invention be mounted in the lower region 920 of the magnetic stripe 910 when the credit card device is viewed in a plan view.

For example, the magnetic stripes 910 may be formed with a length of about 0.4 inches at a distance of about 0.21 to 0.22 inches from the top end of the credit card. Accordingly, it is desirable that components related to wireless communication according to an embodiment of the present invention be mounted between a portion of about 0.61 to 0.62 inches from the upper end of the credit card to a lower end (indicated by 920).

10 is a conceptual view illustrating a mounting area of a credit card device having a wireless communication function according to an embodiment of the present invention corresponding to an insert function.

Referring to Fig. 10, typically, a credit card may be used in an insertion mode, i.e., an insert mode.

In the use of such an insert method, an IC chip (Integrated Circuit Chip) is formed in the upper left area of the upper plate of the credit card. Therefore, in order to make the settlement using the credit card occur without any abnormality, it is preferable that the IC chip portion of the credit card is configured so as not to be affected by the radio signal. Accordingly, when the upper surface of the credit card is viewed in a plan view, it may not be desirable that components related to communication according to an embodiment of the present invention are mounted in the left area 1010 where the IC chip can exist. Therefore, it is preferable that the IC chip is not mounted in the region of about 2.2 to 2.3 cm from the right side region and the left end side, and the region from about 2.2 to 2.3 cm from the left side end to the right end is related to communication according to an embodiment of the present invention It is preferable that the structure is mounted.

11 is a conceptual diagram illustrating a mounting area of a credit card device having a wireless communication function according to an embodiment of the present invention, which corresponds to a swipe function and an insert function.

11, in order to smoothly utilize both the swipe and the insert method, the credit card device according to the embodiment of the present invention includes a magnetic swipe portion 1110, It is preferable that a configuration related to wireless communication is mounted in the intersection portion 1130 on the right side of the left region 1120 where the IC chip is formed.

Thus, in the four corners of a rectangular credit card device, there is a configuration associated with wireless communication in the region 1130 on the right side of the portion, which is about 0.61 to 0.62 inches from the top edge and about 2.2 to 2.3 cm from the left edge, It is preferable that they are mounted.

Consider credit card packaging and human proximity

The packaging can be performed in consideration of the human body proximity position to the antenna according to the embodiment of the present invention. Particularly, since the permittivity exists in the human body, the characteristics of the radio signal from the antenna of the credit card apparatus can be partially changed by the permittivity of the human body. For example, it may affect the operating frequency of the antenna. Due to such a characteristic of the wireless signal, the credit card device may erroneously recognize the credit card device even though the credit card device is not far from the wireless communication terminal, and may determine that the credit card device is in a lost state. Or the wireless communication terminal may mistakenly analyze the characteristics of the wireless signal from the credit card device to misidentify it as a lost state. Therefore, in order to prevent the interference of the signal from the human body, the credit card apparatus according to the embodiment of the present invention may use a method of partially changing the operating frequency of the antenna in consideration of the human body proximity position. Also, the length and width of the opening surface can be adjusted in consideration of the human body proximity position when packaging. Through this adjustment, the antenna impedance and the operating frequency can be controlled. That is, the frequency can be determined by changing the operating frequency from f ₂ to f ₀ in consideration of the variation of the operating frequency of the antenna.

Implementation of ultra-small antenna device 1 (based on waveguide structure)

12A to 12F are a perspective view and a sectional view of a micro-sized antenna device incorporated in a credit card device having a wireless communication function according to an embodiment of the present invention.

Referring to FIG. 12A, the apparatus may be configured to mount a cavity resonator of a waveguide on the rear surface of an aperture antenna to suppress backward radiation and be insensitive to the surrounding environment. This can maximize antenna gain. In particular, through the use of such a configuration feature, it is possible to secure the performance of the antenna by applying it to a flat type credit card device.

The antenna device according to an embodiment of the present invention is configured to form a feed layer on a top surface of a dielectric substrate, and a ground layer (or a ground surface) on a bottom surface thereof. An antenna device having a radiator disposed on the upper surface of the dielectric substrate and a lower surface including at least one slot may be used. This can be called a slot antenna. The bottom surface forms a ground plane, and the length of the slot may be less than or equal to 1/2 wavelength.

A rectangular slot opening corresponding to the slot is formed in the lower portion of the dielectric substrate, and a rectangular parallelepiped cavity including a plurality of flat plates is formed in contact with the ground plane of the dielectric.

Referring to FIG. 12B, which shows a cross-sectional view of an opening-type antenna in the form of a waveguide cavity support, a plurality of flat plates in a waveguide cavity form a path of a serpentine wave, and the length d of the propagation path corresponds to the height of the cavity h ). In addition, any one of the plurality of flat plates may be disposed at the central portion without touching the outer wall, and a center wall may be formed at a lower portion of the flat plate disposed at the central portion. In addition, a flat plate contacting the outer wall below the flat plate disposed at the central portion may be disposed so as to form a serpentine path. Further, an electrical length (half wavelength) is secured in the form of a multilayer via hole.

Furthermore, the short circuit waveguide applied to the antenna device according to an embodiment of the present invention may be folded.

Referring to FIG. 12C, the dielectric substrate and the cavity are in contact with each other and are implemented with one antenna. On the upper surface of the dielectric substrate, a feeder line (microstrip feed) for feeding the radiator and the radiator is disposed. According to an embodiment of the present invention, the upper surface including such a feed line may be made of a second substrate separate from the dielectric substrate (first substrate). At this time, the radiator may be disposed on the upper portion of the second substrate, and the feed line may be disposed on the lower portion of the second substrate. Then, power can be supplied through the via hole.

Further, the cavity has a form in which a folded waveguide resonator (FRW: Folded Waveguide Resonator) is mounted. Particularly, since it is necessary to reduce the thickness of the antenna in consideration of the credit card thickness (2 mm max), the antenna device according to the embodiment of the present invention can be realized by the antenna of the opening shape of the substrate integrated waveguide cavity shape (monolayer via hole) .

12D, an antenna device according to another embodiment of the present invention includes a slot opening in a lower surface (ground plane) of a dielectric, and a center pillar 1230 is formed in a lower region corresponding to a slot opening surface, Lt; / RTI > And a second flat plate 1220 that is not in contact with the outer wall of the cavity but is disposed in contact with the outer wall without contacting the center pillar 1230 of the cavity, A plurality of the first flat plate 1210 and the second flat plate 1220 may be disposed in consideration of the use environment. In this case, g _a and g _b between the first and second flat plates 1210 and 1220 may be constant.

When showing a plan view of an antenna apparatus according to an embodiment of the present invention is described with reference to Figure 12e, the apparatus including a power supply line having a length in the feed line of a slot opening surface of the length L _s, and length L _f. Further, the feed line may be formed in an "L" shape starting from one side of the rectangular substrate by L _p . An actual antenna having such characteristics is shown in FIG. 12F.

FIGS. 13A through 13E are top views of an opening-type antenna in the form of a square substrate direct waveguide cavity support in accordance with an embodiment of the present invention and antenna characteristics associated therewith.

Referring to FIG. 13A, a radiator is disposed on the upper surface of the dielectric substrate of the opening-type antenna. At this time, the dielectric substrate can be formed in a square shape, and a via hole 1320 is densely formed on the outer peripheral surface of the square substrate. At this time, the lower surface of the dielectric substrate (ground plane), the slot 1330 has a length of W _s width and L _s in and is disposed proximate the central region of the dielectric substrate, a radiating element (1310, in a direction perpendicular to the slot direction -1, and 1310-2 are formed on the upper surface of the dielectric substrate. In this case, the radiator includes a plurality of radiators 1310-1 and 1310-2 symmetrically formed to face each other, and the length L _cpw of the radiator may be longer than half the length of one corner of the square. Therefore, it can be formed longer than the point where the slot 1330 is located.

According to an embodiment of the present invention, it is preferable that the waveguide cavity structure is driven in the TE120 mode in order to improve the radiation performance at the reduced antenna height.

Referring to FIG. 13B, assuming that the operating frequency is 10 GHz, the electric field may be formed symmetrically with respect to the slot, and some electric field may be generated in the space between the emitters.

Referring to FIG. 13C, in the antenna device according to the embodiment of the present invention, the reflection coefficient is changed by setting the height of the substrate to 0.25 mm, 0.5 mm, and 1.00 mm. Particularly, it is possible to control the bandwidth by the influence of the height of the cavity (substrate). The antenna device according to an embodiment of the present invention has a bandwidth of 2.8% based on VSWR 2: 1, and the antenna size may have 0.8 X 0.66 X 0.017? ₀ ³ . In addition, the gain can be set to a value of 5.3 dBi.

Referring to FIG. 13D, according to the antenna device according to the embodiment of the present invention, the radiation pattern of the square-substrate integrated waveguide cavity support-type opening-type antenna has a directivity in a specific direction. The radiation efficiency at this time may be 86%. FIG. 13E shows an actual antenna having the above-described characteristics.

FIGS. 14A to 14F are top plan views of an opening-type antenna in the form of a rectangular substrate direct waveguide cavity support according to another embodiment of the present invention and antenna characteristics thereof.

Referring to Fig. 14A, a radiator is disposed on the upper surface of the dielectric substrate of the opening-type antenna. At this time, the dielectric substrate may be formed in a rectangular shape. Similarly to the square substrate of FIG. 13A, a via hole 1420 is also formed in the outer peripheral surface of the rectangular substrate. At this time, the lower surface of the dielectric substrate (ground plane), the slot 1430 has a length of W _s width and L _s in and is disposed proximate the central region of the dielectric substrate, a radiating element (1410, in a direction perpendicular to the slot direction -1, and 1410-2 are formed on the upper surface of the dielectric substrate. At this time, the slot 1430 is formed parallel to the long axis of the rectangle, and is disposed at the center. The radiator includes a plurality of radiators 1410-1 and 1410-2 symmetrically formed to face each other, and this radiator may be formed in a direction perpendicular to the slot 1430 on a long axis of the rectangle. It is preferable that the length (L _cpw ) of the radiator is formed to be shorter than the half length of the minor axis of the rectangle. So that it can have a length that does not reach the point where the slot 1430 is located.

Referring to FIG. 14B, in an embodiment of the present invention, it is preferable that the waveguide cavity structure is driven in a multi-mode in which the TE ₁₂₀ mode and the TE ₁₁₀ mode coexist in order to improve the radiation performance at the reduced antenna height. For example, in a low frequency (9.84 GHz band), a multi-mode resonance can be performed in a form of combining a TE ₁₂₀ and a TE ₁₁₀ in an odd mode in a slot. Alternatively, a multi-mode resonance in which TE ₁₁₀ and TE ₁₂₀ coexist in an even mode in a slot at a high frequency (10.27 GHz band) can be performed. By combining multiple resonance modes suitable for each frequency band (TE 110, TE 120), broadband characteristics can be ensured.

Referring to FIGS. 14C and 14D, the resonance frequency can be changed (from 9.6 to 9.8 or 10.2 to 10.4 GHz at 10 GHz) by adjusting the waveguide size and aperture size, and the impedance matching bandwidth can be changed.

In addition, referring to FIG. 14E, the rectangular-substrate integrated waveguide cavity support type opening-aperture antenna according to another embodiment of the present invention improves the performance of adjusting the impedance bandwidth by changing the height of the substrate compared to the conventional antenna.

An antenna device according to another embodiment of the present invention has a bandwidth of 6.3% based on VSWR 2: 1, and the antenna size may have 0.59 X 0.41 X 0.017? ₀ ³ . In addition, a value of 6.0 dBi can be obtained as an antenna gain value at an operating frequency of 10 GHz.

Referring to FIG. 14F, according to the antenna device according to another embodiment of the present invention, the radiation pattern of the opening-type antenna in the form of a rectangular substrate integrated waveguide cavity support has directivity. The radiation efficiency at this time may be 86%.

Figs. 15A to 15J are views showing a plan view and an antenna characteristic of the I-shaped opening surface antenna of the square and rectangular waveguide cavity base.

15A, the upper surface of the feed layer on top of the dielectric substrate of the I-shaped aperture antenna of the square waveguide cavity base includes an I-shaped emitter 1510. At this time, the via holes 1520 may be closely arranged on the outer peripheral surface of the square substrate. The I-shaped radiator 1510 disposed on the upper surface has a shape symmetrical to the left and right on the yz plane. Also, there is a power feeding part 1530 which is biased to the left or right from the center of the long axis part of the I-shaped radiator to feed power.

Referring to the right drawing of Fig. 15A, the lower surface of the upper feed layer of the dielectric substrate includes a feed line. The feed line has an "L" shape. Which includes an open stub 1540 at one end. The first line 1550-1 including the open stub 1540 and the second line 1550-2 starting across the via hole 1520 disposed continuously on the outer circumferential surface form the feed line. At this time, the second line 1550-2 may be biased to the left or right of the center portion of the first corner of the square substrate. The power feeding portion 1560 is present in a part of the second line 1550-2 and the power feeding portion 1560 is indirectly connected to the power feeding portion 1530 of the radiator to supply power.

According to one embodiment of the present invention, the dielectric substrate may be a Taconic RF-45 substrate. At this time, the dielectric constant? = 4.5 and tan? = 0.004. The antenna shape may have a size of 0.8 x 48 x 48 mm ³ , that is, 0.006 x 0.4 x 0.4λ ₀ ³ .

Referring to FIG. 15B, it is possible to secure a band of 2.38 to 2.48 GHz in a relation of VSWR 3: 1 at an input standing wave ratio and an axial ratio, and can have a maximum gain of 4.2 dBi. That is, a gain of 3 dBi or more can be obtained at 2.38 to 2.48 GHz. In the 2.28 to 2.3 GHz band, a circular polarization (axial ratio? 10 dB) shape can be obtained.

Referring to FIG. 15C, it is possible to confirm the directivity of the ZX (E-cut) pattern at 2.45 GHz to the right, and referring to FIG. 15D, the directivity from the XY (H-cut) pattern to the upper side is confirmed at 2.45 GHz . Referring to FIG. 15E, it can be seen that a maximum gain of 4.2 dBi can be obtained at 2.45 GHz in the antenna gain portion.

15F, the upper surface of the feed layer on top of the dielectric substrate of the I-shaped aperture antenna of the rectangular waveguide cavity base includes an I-shaped radiator 1512. At this time, the via holes 1522 may be closely arranged on the outer peripheral surface of the rectangular substrate. The I-shaped radiator 1512 disposed on the upper surface has a shape symmetrical to the left and right on the yz plane. The I-shaped radiator 1512 of the rectangular substrate may have an antenna shape of a generally smaller volume than the I-shaped radiator 1510 of the square substrate, or bandwidth expansion is possible. Also, there is a power supply portion 1532 which is biased to the left or right from the center of the long axis portion of the I-shaped radiator to feed power.

Referring to the right drawing of Fig. 15F, the lower surface of the upper feed layer of the dielectric substrate includes a feed line. The feed line has an "L" shape and has a shape similar to a square feed line. Which includes an open stub 1542 at one end. The first line 1552-1 including the open stub 1542 and the second line 1552-2 starting across the via hole 1522 continuously arranged on the outer circumferential surface form the feed line. At this time, the second line 1552-2 may be biased to the left or right of the center portion of the long axis edge of the rectangular substrate. Accordingly, the power feeding portion 1562 is present in a part of the second line 1552-2, and the power feeding portion 1562 is indirectly connected to the power feeding portion 1532 of the radiator, so that power can be supplied.

According to one embodiment of the present invention, the dielectric substrate may be a Taconic RF-45 substrate. At this time, the dielectric constant? = 4.5 and tan? = 0.004. The antenna shape may have a size of 0.8 x 48 x 40 mm ³ , that is, 0.006 x 0.4 x 0.33λ ₀ ³ .

Referring to FIG. 15G, it is possible to secure a band of 2.38 to 2.56 GHz in a relation of VSWR 3: 1 at an input standing wave ratio and an axial ratio, and can have a maximum gain of 3.9 dBi. That is, a gain of 2.5 dBi or more can be obtained at 2.38 to 2.56 GHz. Also, in the 2.78 to 2.8 GHz band, a circular polarization (axial ratio? 10 dB) shape can be obtained.

Referring to FIG. 15H, it is possible to confirm the directivity of the left and right directions in the ZX (E-cut) pattern at 2.45 GHz (right directionality is stronger) ) Direction, the directivity to the upper and lower sides can be confirmed (the higher directivity is stronger). Referring to FIG. 15J, it can be seen that a maximum gain of 3.9 dBi can be obtained at 2.45 GHz in the antenna gain portion.

However, it is more disadvantageous that directivity and front-to-rear ratio are less than that of square-waveguide cavity base.

Implementation of micro antenna device 2 (based on meta-material)

16A to 16J are views for explaining an electrical-small antenna device stacked on a shell-shaped meta-surface according to another embodiment of the present invention.

In a general antenna, a feeder, a? / 4 wavelength converter, and an inductor are required for impedance matching. In such a system (e.g., an electrical dipole antenna system), a process is required to adapt the inductor to produce an input reactance of zero and adapt the? / 4 wavelength converter to match the input resistance value to the resistance value of the feed part . Therefore, it can be considered that an Efficient Electrically-Small Antenna (EESA) capable of more efficient matching is used in the credit card device of the present invention. This includes a feeder, a metamaterial-based matching element and a modified emitter. The modified radiator is a radiator contained within a radius a smaller than the radiansphere.

Referring to FIG. 16A, when a capacitor element and an inductive element are combined to produce an LC resonator, a design in which a cell based on a meta material is applied to the inductive element can be considered. That is, it is possible to realize an electrical small antenna, but utilize a shell-shaped meta surface structure. This is because, although the size of the radiator is a structure below the wavelength, a structural resonance phenomenon occurs due to the effect of being synthesized with the shell-shaped meta-material structure.

These antennas can be implemented with antennas having different volume conditions, such as two-dimensional and / or three-dimensional or planar / planar. It is also possible to implement an electric field based antenna system and a magnetic field based antenna system. This antenna system includes a very small one-unit electrically-based meta-material that is adapted to match the input impedance of the antenna, including a radiator that is powered from a power source through a feed line through a ground plane, Cell.

Referring to FIG. 16B, an antenna according to another embodiment of the present invention is a planar two-dimensional electric field-based small-sized antenna including a meta-surface structure including an inductance spiral shape.

When a three-dimensional electric field based antenna system is realized by a planar two-dimensional antenna, it can be further miniaturized. Such a planar two-dimensional antenna device may include an electrically small, printed monopole antenna 1672 and a meander line structure 1675 on the laminate structure 1673. As shown in Fig. 16B, the monopole antenna 1672 and the milder line structure 1675 are located on opposite sides of the laminate structure 1671, respectively. For example, the laminate 1671 may be a Roger 5880 Duroid thick substrate of 0.787 mm, and the mine line 1675 is directly connected to the ground plane 1676. The ground plane 1676 of the planar two-dimensional field-based antenna has protruding structural features.

As a unit cell, independent operations of the soft line element 1675 allow the element 1675 to impedance match the capacitor monopole antenna 1672 with the power source, (Epsilon negative) meta-material media required to provide the inductance needed to achieve the desired inductance.

The copper surface of the mine line 1675 serves as a current path for the induced current generated by the electric field distribution of the monopole antenna 1672 that is fed through the ground plane 1676. Min it of (1675) is disposed in close proximity with the monopole antenna (1672) (e.g., λ _0/275). Thus, a large inductance is generated, which again allows the system to form an RLC resonator.

Increasing the height of the antenna improves the monopole antenna 1672 being resonantly coupled to the middler line, which improves the resonant response of the antenna system. Thinner substrate thickness also improves resonant coupling between the antenna 1672 and the mine line 1675. The antenna width affects the reactance portion of the antenna system.

The mutual capacitance between adjacent copper strips 1674 depends in large part on the distance separating the adjacent copper strips 1674. That is, increasing the via height 1673 between adjacent copper strips 1674 in the mine line 1675 reduces mutual coupling. Consequently, the resonance transits towards higher frequencies. However, when the via height 1673 is increased, the resonant effect is reduced due to the low copper strip density. That is, the strip density determines the amount of current induced by the electric field distribution. In addition, the antenna design according to an embodiment of the present invention may have a small strip length than λ _0/4.

Referring to FIGS. 16C and 16D, the performance of the receiver of the antenna according to an exemplary embodiment of the present invention is predicted by comparing the two-dimensional electric field based antenna manufactured with the above characteristics and the bare monopole antenna, S ₁₁ and the radiated power of the receiving antenna received as power transmission from the reference horn antenna (transmitter), respectively. It can be seen that the relative total efficiency measured is equal or slightly better at the design frequency of 1373 MHz than that of the reference horn antenna itself. Since the efficiency of the reference horn antenna is 94%, the measured total efficiency of the two-dimensional field-based antenna system (antenna according to one embodiment of the present invention) based on meta-material is greater than 94%. In particular, the total radiated power response of the bare monopole antenna relative to the reference horn is shown in Figure 16d. Here, a bare monopole antenna does not resonate at a design frequency, and refers to an antenna having only a monopole radiator of the same physical length without an electrode line extending from the ground plane.

In the planar two-dimensional electric field based antenna according to the embodiment of the present invention, simulated and measured S ₁₁ are almost identical at 1373 MHz, and perfect impedance matching is possible. The received power ratio is more efficiently driven by 35 dB than the bare monopole antenna.

Referring to Figures 16e and 16f, with reference to a planar two-dimensional antenna implementation of a magnetic antenna system, a two-dimensional magnetic field based EZ antenna system 1620 includes a dielectric laminate structure 1631 such as Rogers 5880 Duroid do. However, the use of the dielectric substrate 1631 causes a genetic loss and also lowers the overall efficiency of the antenna system 1620. Moreover, the low-loss dielectric substrate 1631 increases the design cost. Thus, dielectric-backed conductors require fabrication of a meta-material structure.

The first planar two-dimensional version of the magnetic field based antenna system 1620 replaces the third dimension of the three-dimensional version of the extruded CLL element 1615 having a planar pod-shaped capacitor 1625 . The magnetic field based antenna system 1620 of the three-dimensional meta-material includes a self-resonant, reactive plane that can be matched with the reactance portion of the electrically-small rectangular, semi-loop antenna 1624 that is coaxially fed through the ground plane 1626 , And an interdigitated CLL element 1630. The ground plane 1626 of the planar two-dimensional magnetic field based antenna is protruded in the same manner as the ground plane 1676 of the planar two-dimensional electric field based antenna described above, which makes it difficult to integrate the antenna.

CLL element 1630 includes an interdigital capacitor 1625 having a plurality of interdigitated capacitor fingers 1621, 1622, 1623 (fingers). The number of capacitor fingers, the finger length, the horizontal gap between the substantially planar CLL element 1630 and the free end of the capacitor finger, the capacitance gap between the adjacent fingers 1621 and 1622, and 1622 and 1623, Each of the resonators 1627 and 1628 provides a tuning capability of the resonant frequency. To reduce copper losses, the system design should include a minimum number of fingers to increase overall efficiency.

Relatively long and closely spaced capacitor fingers 1621, 1622, 1623 may be used to obtain lower resonant frequencies. Captures the magnetic flux generated by the area 1629 between the bottom pod-shaped capacitor finger 1623 and the ground plane 1626 and the electrically-small rectangular semi-loop antenna 1624 driving it.

Variations with these resonantly large magnetic flux times produce an induced current on the surface of the CLL element 1630. The induced currents produce a capacitance across the interdigital fingers 1621, 1622, 1623 in the capacitive gaps 1627, 1728. The capacitance obtained from the induced current is determined by the inductance of the electrically-small, rectangular semi-loop antenna 1624, the ground plane 1626, and the inductance due to the current path formed by the interdigital CLL element 1630 It is large enough to match.

The length, width, and height of the rectangular semi-loop antenna 1624 serve to match the resistance and reactance of the matching / radiating element 1630 to match it to, for example, the 50-Ohm feed line 1614. Thus, an efficient, electrically-small antenna system 1620 can be achieved. For example, the resonant coupling of a two-dimensional interdigitated CLL element 1630 and a configured rectangular semi-loop antenna 1624 improves the radiation resistance and reactance response of the antenna system 1620. The length and height dimensions of CLL element 1630 provide the main inductance of this two-dimensional, magnetic field-based antenna system 1620. The finger number, finger length, finger space, and finger gap provide the main capacitance of the antenna system 1620.

The width of the rectangular, semi-loop antenna 1624 has some effect on the inductance, but its overall effect on the tuning of the system is limited. However, the width of the rectangular semi-loop antenna 1624 causes a conductor loss in the antenna system 1620. Independent operations of CLL element 1630 indicate that CLL element 1630 behaves like a MNG (Mu-Negative) medium that agrees with the prediction. Thus, the MNG meta-material is suitable for providing impedance matching of an inductive rectangular semi-loop antenna and feed part and providing the capacitance required to achieve a resonant system.

16G and 16H, a planar two-dimensional magnetic field based antenna design 1640 according to another embodiment of the present invention may be used to replace a lumped element capacitor 1645 instead of an interdigital capacitor 1625 Based. 16H, the lumped component capacitor 1645 includes terminal electrodes 1632 with a ceramic dielectric 1634 therebetween. An advantage of using the lumped element capacitor 1645 is that it can further reduce the conductor losses, which improves the efficiency of the overall antenna system 1640. Another advantage is that it is easy to adjust the resonant frequency of the antenna system 1640.

Another embodiment of the planar two-dimensional magnetic field based antenna 1640 includes a lumped element capacitor 1645. For example, the lumped-component capacitor 1645 may have a length, width, and thickness of 1 mm, 0.5 mm, and 0.5 mm. The selected capacitor size code (EIA) may be 0402.

The area 1649 between the bottom matching / radiating element 1641 and the ground plane 1646 captures the magnetic flux generated by the electrically-small, rectangular semi-loop antenna 1644 driving it. These changes with time of this resonating large magnetic flux produce an induced current on the two arms 1642 and 1643 of the matching / radiating element 1650 that supplies the required current for the capacitor 1645. The capacitance in the antenna system 1640 is large enough to match the inductance due to the inductance of the semi-loop antenna 1644 and the current path formed by the ground plane 1646 and the matching / radiating element 1641.

The length, width, and height of the semi-loop antenna 1644 serve to match the resistance and reactance of the radiating element to the 50 Ohm feed line 1614 and also achieve an EESA system.

Fig. 16i shows the antenna input impedance of a planar two-dimensional magnetic field based electrical small antenna including the lumped element capacitor, and Fig. 16j shows the radiation pattern of the antenna. It can be seen that the radiation pattern has a maximum value according to the normal distribution with respect to the ground plane. Since the antenna is electrically small, it is interpreted that the far-field pattern is almost the same as the three-dimensional antenna system.

In particular, a planar two-dimensional magnetic field based antenna achieved through an interdigital capacitor element is linearly modulated for any desired frequency. Modulated antenna performance values appear at frequency and component dimension ratios.

FIGS. 17A through 17J are plan views of a planar two-dimensional electric field-based electrical-small antenna, a planar two-dimensional magnetic field based electrical-small antenna, and respective antenna characteristics.

17A, the top surface of the dielectric substrate of the field-based electrical-to-miniature antenna includes a monopole radiator 1710. [ At this time, the monopole radiator 1710 may be formed longer than the substrate region, and a portion of the monopole radiator 1710 opposite to the meta surface portion 1730, which is loaded in the clearance of the ground plane layer 1720, Lt; / RTI >

According to one embodiment of the present invention, the dielectric substrate may use an FR-4 substrate. At this time, the dielectric constant? Has a value of 4.4 and tan? = 0.02. The antenna shape may have a size of 0.4 x 20 x 26 mm ³ , that is, 0.003 x 0.17 x 0.22? ₀ ³ .

Referring to FIG. 17B, in the relation of VSWR 3: 1 at the input standing wave ratio, a band of 2.38 to 2.47 GHz can be secured and a maximum gain of 1.1 dBi can be obtained. That is, a gain of -3 dBi or more can be obtained at 2.33 to 2.56 GHz.

Referring to FIG. 17C, it can be seen that a slight directivity that deviates leftward and rightward from the ZX (E-cut) pattern at 2.43 GHz can be confirmed. Referring to FIG. 17D, also in the XY (H-cut) pattern at 2.43 GHz, . Referring to FIG. 17E, it can be seen that a gain of 1.3 dBi or more can be obtained at 2.43 GHz in the antenna gain portion.

17F, the top surface of the dielectric substrate of the planar two-dimensional magnetic field based electrical-small antenna includes a loop radiator 1712. [ The loop radiator may be fed from the 50-Ω feeder, and the long axis of the loop radiator 1712 may be disposed slightly to the left or right from the center of the first corner of the rectangular substrate. The long axis of such a formed loop radiator 1712 may be longer than the second edge (short axis) of the substrate and extend to the position where it deviates from the substrate. A loop radiator 1712 is formed in such a manner that a loop is formed at a vertically bent portion at the end of the long axis and then returns to a portion of the substrate. At this time, the loop structure 1732 in which the capacitor 1742 is loaded at the clearance of the ground plane 1722 is formed in a shape corresponding to the loop of the loop radiator 1712

According to one embodiment of the present invention, the dielectric substrate may use an FR-4 substrate. At this time, the dielectric constant? Has a value of 4.4 and tan? = 0.02. The antenna shape may have a size of 0.4 x 20 x 26 mm ³ , that is, 0.003 x 0.17 x 0.22? ₀ ³ .

Referring to FIG. 17G, in the relation of VSWR 3: 1 at the input standing wave ratio, a band can be secured at 2.4 to 2.48 GHz and a maximum gain of -3.7 dBi can be obtained. That is, a gain of -6.0 dBi or more can be obtained at 2.38 to 2.5 GHz.

Referring to FIG. 17H, it can be confirmed that the directivity slightly deviates from the ZX (E-cut) pattern at 2.44 GHz to the upper and lower portions. Referring to FIG. 17J, it can be seen that a maximum gain of -3.73 dBi or more can be obtained at 2.44 GHz in the antenna gain portion. In particular, Gain _phi is the main polarization, which indicates that the radiation of the antenna is in the null direction during card integration. It can be seen that the antenna efficiency is slightly low (? 25%).

That is, since the meta-surface-based antenna is useful when operating with a plastic material, it is preferable to use the meta-surface-based antenna based on the electric field / magnetic field when the case of the credit card device is made of a plastic material.

18A to 18E are views showing various exemplary shapes of an electric small-sized antenna including a meta-surface structure and antenna characteristics therefor.

18A, an antenna including a meta-surface structure according to the present invention includes a split ring resonator 1820 (Split Ring Resonator) formed on a radiator 1810 (inverted-L element) Shape can be considered. This is applicable to an electric field based antenna. Here, the meta-surface structure may be fabricated with a split ring resonator 1820. This is applicable to a monopole antenna. As a result, although the radiator size is a structure below the wavelength, it causes a structural resonance phenomenon due to the effect of being mixed with the loaded split ring resonator structure. This allows the antenna efficiency (≥40%) to be improved despite the size of the emitter (less than λ / 8) electrically in a small package.

Referring to FIG. 18B, an antenna device according to an embodiment of the present invention may include a split ring resonator structure including a monopole antenna. On the ground plane 1832, there is an inner monopole radiator 1850 connected to the feeding part, and the monopole radiator 1850 is formed on the PCB substrate 1840. And, on the substrate, two circular split ring resonator structures including split gaps having different nipples can be arranged apart from the monopole radiator. The inner semicircle may have a split gap at the top and the outer semicircle may have a split gap at the bottom.

Referring to FIG. 18C, a meta-surface-based small antenna according to another embodiment of the present invention can be considered as a miniaturization model by applying a sawtooth split ring resonator structure to an antenna.

18D and 18E, the radiation pattern of the monopole antenna including the sawtooth split ring resonator structure is almost omnidirectional on the E plane, and on the H plane, the radiation trap function indicating the directivity to the upper side is confirmed .

Figs. 19A to 19E are diagrams showing the shape of an antenna capable of controlling the wavefront of an electrical-small antenna with a meta-surface structure and the antenna characteristics thereof.

19A, an electric small antenna including a meta surface structure according to an embodiment of the present invention includes a plurality of planar antennas 1910-1 and 1910-2 connected to a one-dimensional EBG 1950 and a split ring resonator structure (1930, 1940) may be considered.

The plurality of plane antennas 1910-1 and 1910-2 may be monopole antennas, and they are disposed apart from each other with a slight gap (for example, 22mm, 0.19λ ₀ ) on the ground plane 1920. The operating frequency of the antenna may be 2.46 GHz.

A one-dimensional EBG 1950 and a split ring resonator 1940 are disposed between the monopole antenna elements. The one-dimensional EBG includes two outer walls 1950 and functions as a reflector. The split ring resonator may be implemented as a square 1940 with two split gaps in the form of a wire 1930 in combination with the wire 1940 in the center and serves as a wave trap Can be performed. Due to the presence of these two components (EBG and split ring resonator), the mutual coupling between the two antennas is significantly reduced.

Referring to FIGS. 19B and 19C, it can be seen that the mutual coupling is reduced by 42 dB or more, and the back lobes are also reduced by about 6 dB.

Referring to FIGS. 19D and 19E, the presence of EBG and split ring resonators allows the radiation pattern to have more directivity. When the correlation coefficient is only 0.138 when there is only a reference antenna, the EBG and split ring resonator Due to the existence, it can be confirmed that it is reduced to 0.002. Thus, it can be seen that the overall radiation efficiency has a synergy effect (increased from 73% to 82%) of about 9% or more.

How to prevent loss of credit card device and wireless communication terminal associated with it

20 is a block diagram schematically illustrating a configuration of a credit card device having a wireless communication function according to an embodiment of the present invention. 20, a credit card device according to an embodiment of the present invention includes a first communication module 2210, a second communication module 2220, a third communication module 2230, a switch 2240, (2250).

Referring to FIG. 20, the first communication module 2210 is a module for performing short-range communication. The first communication module 2210 may perform various methods such as bluetooth, zigbee, NFC (Near Field Communication), and sensor network. The first communication module 2210 basically operates continuously for the life of the battery 2250 and can periodically exchange signals with the previously paired wireless communication terminals. It is possible to provide a response signal in response to a paging signal from the wireless communication terminal or to provide a status signal to the wireless communication terminal in a predetermined period of time. The status signal may not include special status information, and may be a signal for causing the wireless communication terminal to check signal strength, arrival time, and the like. The first communication module 2210 may perform functions for control together. That is, the first communication module 2210 may be implemented as a hardware processor, and the processor may be coded to perform not only communication signal processing but also switch control operations, Can serve as a controller. Accordingly, the power consumption is minimized by normally deactivating the switch 2240 connected to the second communication module 2220 and the third communication module 2230, and the GPIO enable signal for turning on the switch 2240 A signal may be generated to activate the switch 2240. The second communication module 2220 and the third communication module 2230 are activated according to the activation of the switch 2240 to acquire the location information of the credit card and provide the location information to the paired wireless communication terminals through the long distance communication .

The second communication module 2220 is a module for performing long-distance communication. The communication method performed by the second communication module 2220 may include a LoRa, a Wide Area Network (WAN), an LTE, and an LTE-A if the 3G, 4G, and 5G communication methods exist. The second communication module 2220 is normally inactivated and can be activated in response to activation of the switch 2240 from the first communication module 2210 upon detection of a lost state.

The third communication module 2230 may include a GPS module. The third communication module 2230 is in the inactive state and is activated based on the turn-on of the switch 2240. [ When activated, the third communication module 2230 obtains its current GPS position information and provides the obtained information to the wireless communication terminal through the first communication module 2210 and / or the second communication module 2220 .

The switch 2240 may include a load switch. The switch 2240 may turn on in an off state in response to an enable signal from the first communication module 2210. [ Thereby activating the second communication module 2220 and the third communication module 2230.

The battery 2250 may include a planar battery. The battery 2250 basically can supply power only to the first communication module 2210. [ Then, the second communication module 2220 and the third communication module 2230 can be supplied with power according to the turn-on of the switch 2240. The battery 2250 is connected to a linear regulator 2202 (Low Dropout Linear Regulator) to induce a desired voltage / current characteristic.

In particular, the credit card device according to the embodiment of the present invention can implement the geo-fencing function using the Bluetooth in the above-described manner. This enables the notification function to be activated when the distance between the credit card and the smartphone of the cardholder exceeds a certain distance.

In addition, when the card is stolen, coordinates of the GPS built in the card can be transmitted to the owner via the LoRa IoT nationwide network in real time. In other words, this feature makes it possible to prevent wallet fraud and find wallet if a credit card is widespread in a purse.

To clarify this, it may be required to clearly define the concept of loss. For example, first, when the mutual distance between the owner and the smartphone is greater than the threshold value, the loss can be defined. This can be determined based on the Bluetooth signal strength. In addition, the loss can be judged based on the elapsed time of the Bluetooth signal. It is also possible to determine the loss based on the time interval at which the alarm is reset.

With respect to location tracking, in the event of a loss, the credit card device transmits GPS coordinates to the smartphone of the host pairing by way of broadband communication means. It is also possible to control the function of the credit card to stop when a loss occurs. Embodiments related to various scenarios for recognizing and tracking loss are described in more detail below with reference to Figs. 22 to 26. Fig.

FIG. 21 is a block diagram schematically showing a configuration of a credit card device having a wireless communication function and a wireless communication terminal interlocked with the credit card device according to an embodiment of the present invention. As shown in FIG. 21, the wireless communication terminal 2100 according to an embodiment of the present invention is interworked with the credit card device 2150.

21, the wireless communication terminal 2100 may include a communication unit 2110, a control unit 2120, and a memory 2130.

The communication unit 2110 includes a first communication module 2112 and a second communication module 2114. The first communication module 2112 performs short-range communication and the second communication module 2114 performs long-distance communication. The first communication module 2112 to the second communication module 2114 can communicate with a plurality of antenna devices at different frequency bands. In some cases, at least two bands of communication may be implemented using one multi-band antenna device.

The first communication module 2112 can periodically exchange signals with the first communication module 2162 of the credit card device 2150. For example, the first communication module 2112 transmits a paging signal at a period of 10 seconds, and the first communication module 2162 of the credit card device 2150 receives the paging signal. Alternatively, it may employ a method of unilaterally receiving a periodic status signal from the first communication module 2162 of the credit card device 2150.

The control unit 2120 is a component that controls the operation of the first communication module 2112 and the second communication module 2114 in conjunction with the first communication module 2112 and the second communication module 2114. [ Which may be implemented by a hardware processor and may be operated by instructions stored in memory 2130. [ The control unit 2120 can calculate the distance to the credit card device 2150 using the size and / or the arrival time of the response signal received through the first communication module 2112. [ Then, the calculated distance is compared with a predetermined threshold distance (which may be stored in the memory 2130), so that the loss can be detected when the distance is farther than the critical distance.

When the controller 2120 detects loss, the controller 2120 itself generates a warning signal. In accordance with the generation of the warning signal, the wireless communication terminal 2100 displays a warning visually and / or audibly. For example, a message "Lost" can be displayed on the display screen. Alternatively, a voice associated with loss may be output through a speaker. Alternatively, the user can be informed of the lost situation through output such as vibration. This can be done by the user in a predetermined manner.

The control unit 2120 may notify the user of the lost status and may provide a lost warning signal to the credit card device 2150. This allows the credit card device 2150 to recognize the current lost state and order to operate according to the protocol corresponding to the lost state. The transmission of the loss warning signal may be performed through the first communication module 2112 and / or the second communication module 2114. [ When a loss is made within the communication range of the first communication module 2112, the loss warning signal can be transmitted using the first communication module 2112. However, it is preferable to use the second communication module 2114 when the calculated distance is out of the communication range of the first communication module 2112, or when the lost state is recognized in response to a non-receipt of a signal.

Upon receiving the loss warning signal, the credit card device 2150 activates the third communication module 2160 capable of tracking the location, and transmits the current location information thereof acquired through the third communication module 2160 to the first communication module 2162 and / or the second communication module 2164 to the wireless communication terminal 2100. The wireless communication terminal 2100 receiving the location information can display it through the display device, thereby confirming the location where the current wallet is lost. Then, it is possible to take measures such as stopping the service related to the credit card by the user's input.

The second communication module 2112 is a module for performing long-distance communication. The second communication module 2112 can operate according to a measure corresponding to the loss or the state of the control unit 2120. That is, it may not work with the credit card device 2150 particularly in the non-lost state. Then, when a loss situation occurs, the control unit 2120 performs an operation such as transmitting a loss warning signal or the like.

The credit card device 2150 may include a communication unit 2160 and a control unit 2150. The communication unit 2160 may include a first communication module 2162, a second communication module 2164, and a third communication module 2166, . ≪ / RTI > The first communication module 2162 is responsible for short-range communication, the second communication module 2164 is responsible for long-distance communication, and the third communication module 2166 acquires GPS coordinate information.

The control unit 2170 controls the first communication module 2162, the second communication module 2164, and the third communication module 2164 in cooperation with the first communication module 2162, the second communication module 2164, And controls the operation of the communication module 2166. It can be implemented as a hardware processor. The control unit 2170 can instruct the first communication module 2162 to respond to the paging signal received from the wireless communication terminal 2100. [ Or instruct the wireless communication terminal 2100 to periodically transmit a signal.

The control unit 2170 of the credit card device can receive a loss warning signal from the wireless communication terminal 2100 through the first communication module 2162 and / or the second communication module 2164. [ The control unit 2170 controls the modules 2162, 2164, and 2166 to operate according to a protocol suitable for the lost state. If the lost state is detected, the controller 2170 activates the third communication module 2166 to confirm its current position. Then, the acquired GPS position information is transmitted to the wireless communication terminal 2100. The transmission of the GPS position information may be performed through the first communication module 2162 and / or the second communication module 2164. When the loss warning signal is obtained through the first communication module 2162, it can be determined that the loss warning signal is present within the local communication operation range, and the location information can be transmitted through the first communication module 2162. On the contrary, when the loss warning signal is acquired through the second communication module 2164, it is determined that the loss warning signal is outside the short range communication operation range, and the location information can be transmitted through the second communication module 2164.

In some cases, the control unit 2170 may acquire information related to the remaining battery power of its own and transmit it to the wireless communication terminal 2100. Thereby enabling proper replacement of the credit card device 2150 before the battery is completely consumed.

Further, when a signal related to the stop of the credit card service is received from the server (not shown) associated with the wireless communication terminal 2100 or the wireless communication terminal 2100, the credit card function can be controlled not to operate.

22 is a flowchart illustrating a process in which a wireless communication terminal acquires position information according to a lost state determination according to the first embodiment of the present invention.

Referring to FIG. 22, first, the wireless communication terminal 2200 transmits a paging signal to the credit card device 2205 (S2210). This can be done via short-range communication, and the credit card device can also receive it via the short-range communication module. The call signal is preferably transmitted to the credit card device 2205 at a predetermined period. It is important to set an appropriate period in consideration of the battery capacity of the credit card device and the like. The credit card device 2205 transmits a response signal to the periodically received call signal (S2220). Then, the control unit (processor) of the wireless communication terminal 2200 analyzes the characteristics of the response signal (S2230). Then, based on the analysis result, it is possible to determine whether or not the information is lost (S2240). The determination as to whether or not to be lost will be described in more detail with reference to FIG.

FIG. 23 is a detailed flowchart illustrating a process of determining whether or not a user has been lost.

Referring to FIG. 23, when the wireless communication terminal receives the response signal (S2310), the wireless communication terminal analyzes the strength and / or the arrival time of the response signal (S2320). Then, the distance to the credit card device is calculated based on the analysis result (S2330). For example, it is possible to determine whether there is a credit card device at a certain distance through the intensity of the Bluetooth signal. Further, the distance to the credit card device can be calculated based on the reception time of the response signal from the time when the call signal was transmitted. The strength of the response signal and the time of arrival can be used for the distance calculation together, and only one of the strength and arrival time of the response signal can be used for the distance calculation. It is desirable to use two factors together for the accuracy of the calculation.

After the distance between the two devices is calculated, the terminal compares the calculated distance with a previously stored threshold value (S2340). The threshold value is a value previously stored in the terminal to define the loss, and is a reference value for judging that the wallet has been read out of the human body. This is preferably set at a suitable distance, a distance of about 10 m to 20 m. Alternatively, it may be desirable to set a distance of 12 m to 15 m.

If it is determined that the calculated distance is out of the threshold value, it is determined that the calculated distance is a lost state (S2350), and a corresponding action can be taken.

Returning to FIG. 22, if the wireless communication terminal 2200 determines that the current situation is a lost state, the wireless communication terminal 2200 takes action according to the loss, one of which is to transmit a loss warning signal to the credit card device 2205 (S2250 ). At this time, the transmission of the loss warning signal can be determined by using the local communication module or the remote communication module. The short distance communication module in the credit card device 2205 is activated almost all the time zones, but in the case of the long distance communication module, it may be inactivated by the battery power saving policy. Thus, if the local communication module is within a distance of use, it may be desirable to use a local communication module. Particularly, when a response signal is transmitted, there is a high possibility that the response signal is present in the short-range communication range. Therefore, it is effective to use the short-distance communication module unlike the case where no response signal is received. However, if the calculated distance is close to the maximum possible distance for short range communication, or if the distance between the wireless communication terminal 2200 and the credit card device 2205 gradually increases as a result of continuous analysis of the response signal, After reception, it is possible to detect the deviation from the communicable area. This can be sufficiently confirmed by the wireless communication terminal 2200 through the difference value of the distance value according to the continuous response signal. In such a case, it is desirable to transmit the lost warning signal using the remote communication module. However, it may be desirable to transmit the loss warning signal periodically for a predetermined period of time in consideration of the inactivation state of the remote communication module in the credit card device 2205. [

Since the credit card device 2205 basically keeps the local communication module always on, it is easy to receive the lost warning signal transmitted through the local communication. However, it may not be able to receive the lost warning signal through the long distance communication in the normal state. At this time, if the call signal from the wireless communication terminal 2200 is not received for a predetermined period of time (predetermined threshold time), the credit card device can control the remote communication module to activate the remote communication module by suspecting the loss situation itself. These functions and threshold times can be set via user settings.

When the credit card device 2205 receives the loss warning signal S2250 using the short-range communication module and / or the long-distance communication module, the GPS module is activated (S2260) (S2270). Then, the location information can be transmitted to the wireless communication terminal 2200 using the same communication module as the communication module that received the loss warning signal (S2280).

FIG. 24 is a flowchart illustrating a process in which a wireless communication terminal acquires position information according to a lost state determination according to a second embodiment of the present invention.

Referring to FIG. 24, the wireless communication terminal 2400 transmits a paging signal to the credit card device 2405 (S2410). At this time, it is preferable to use a first communication module related to short-distance communication such as Bluetooth to transmit the paging signal. In response to the paging signal, the credit card device 2405 has to send a response signal. If there is no response signal during the critical time, the wireless communication terminal 2400 can confirm it (S2412). If there is no response signal for a predetermined threshold time, the wireless communication terminal determines that the credit card 2405 exists at a position where it can not receive the call signal by the short distance communication, and transmits a loss warning signal (S2414). This is preferably done using a second communication module that is suitable for long-distance communication because it does not allow short-range communication.

In this case, in the preferred embodiment of the present invention, in order to more clearly grasp the lost state before the loss warning signal transmission, the first communication module can switch the transmission subject of the paging signal to the second communication module suitable for long distance communication. Then, the calling signal through the second communication module can be transmitted to the credit card device, and a response signal to the credit card device can be received from the credit card device. Then, the response signal based on the second communication module is analyzed to determine whether or not the response signal is lost.

When the lost security signal is transmitted through the second communication module, the credit card device 2405 receives it. When the credit card device always activates the first communication module related to the short-range communication and the second communication module related to the long-distance communication, there is no problem to receive it. However, when the first communication module is activated only by the battery saving policy, signals through such long distance communication may not be received. At this time, if the credit card device detects that the paging signal received periodically for a predetermined threshold time period is not received, then control for activating the second communication module may be performed. Upon receiving the loss warning signal through this mechanism, the credit card device 2405 activates the GPS module (S2416). Then, the location information is acquired (S2418) and transmitted to the wireless communication terminal 2400 using the second communication module (S2420).

FIG. 25 is a flowchart illustrating a process of determining a lost state of a wireless communication terminal according to a third embodiment of the present invention.

Referring to FIG. 25, the credit card device 2502 can transmit a periodic status signal to the wireless communication terminal 2500 without a calling signal. For example, a status signal may be transmitted in units of 10 seconds to indicate in real time that a credit card is located in a short distance or a short distance communication. When the periodic state signal is transmitted (S2510 to S2516), the wireless communication terminal 2500 analyzes the received state signal (S2518). Then, it is determined whether the status signal is lost (S2520). Analysis of the status signal may be based on the arrival time of the status signal and the strength of the status signal. If the signal continues to be received at a strength of about 100 and is received at a first power of 80, at a second power of 60, and at a third power of 40, then the current credit card device 2502 is a wireless communications device It can be interpreted as meaning that it is gradually moving away from the terminal 2500. In this case, the loss of the credit card device 2502 can be determined based on the continuity of the difference value between the time points. The method of determining the loss based on the arrival time will be described in more detail with reference to FIG.

26 is a conceptual diagram for explaining the lost state determination method of FIG.

Referring to FIG. 26, the wireless communication terminal can predict a time point of sending a status signal from a credit card device periodically dispatched. Then, it is possible to detect a sending time point and a receiving time point for one status signal. This can be checked by checking the time stamp of the status signal packet or the own time of the wireless communication terminal. Then, it is possible to confirm the time difference between the transmission time point of the first status signal and the reception time point. This time difference is highly related to the distance to the credit card device. Accordingly, the transmission and reception time differences of the status signals continuously transmitted in accordance with the set period such as the second status signal and the third status signal are sequentially analyzed. At this time, the distance to the credit card device can be calculated based on the dispatch time difference of the specific state signal. If it is determined that the calculated distance is longer than the predetermined threshold distance, it can be determined that the loss occurs.

Another method is to define a first time difference between the sending-receiving time difference of the first status signal and a second time difference between the sending-receiving time difference of the second status signal, and as the index of the status signal increases, In case of increasing together, it is possible to determine the lost occurrence state based on the difference value between the time differences. That is, when the first time difference is 0.5 seconds, the second time difference is 0.6 seconds, the third time difference is 0.8 seconds, and the fourth time difference is 0.9 seconds, the difference value between the time differences is maintained at 0.1 to 0.2, The difference value means that the position of the credit card device is gradually moving away from the wireless communication terminal according to time, and therefore it can be predicted that the difference will exceed the critical distance at a certain point in time. Thus, the wireless communication terminal can determine that the wireless communication terminal is in the lost state and decide to send the loss warning signal in a situation where it is predicted that the difference will exceed the critical distance by the difference value (differential value) of the time difference.

Returning to FIG. 25, if it is determined that the card is lost after determining whether or not the card is lost in the above manner, the wireless communication terminal 2500 transmits a loss warning signal to the credit card device 2502 (S2522).

27 is a diagram showing a system in which a plurality of wireless communication terminals are linked to a credit card device.

Referring to FIG. 27, the credit card device 2710 is basically interlocked with the first terminal 2720, and the second terminal 2730 operates for backup of the first terminal 2720. That is, the first terminal 2720 and the credit card device 2710 are primarily paired to perform the loss determination based on the short distance communication. In a particular case, when the terminal 2720 and the credit card device 2710 are lost in the same space or in the same space, it is not easy to determine the lost status because they are in a space close to each other. To cope with this case, the credit card device 2710 obtains information about the second terminal 2730 for back-up, and transmits its location information to the second terminal 2730 (long-term) ). The long-term here can be about one day, two days, or five days apart. Or other time interval. Such a long-term period can be appropriately set in consideration of battery consumption. Also, the second terminal 2730 may be any type of apparatus having a wireless communication function. For example, it may be a server that provides such a lost service, or it may be a personal device such as a cellular phone or a tablet PC of a specific individual.

28 is a diagram showing a display screen of a wireless communication terminal that executes a credit card loss prevention application.

Referring to FIG. 28, the wireless communication terminal 2800 can operate in conjunction with a plurality of credit card devices 2802 and 2804. That is, they may be connected through short-range communication based on the identification information of the credit card devices 2802 and 2804, respectively.

When the credit card loss related application is executed, the related graphic is displayed on the screen of the wireless communication terminal 2800. [ Here, a credit card device that is currently tagged can be displayed. In the embodiment of FIG. 28, the xx card 2810 and the yy card 2820 are currently tagged. An icon 2830 indicating the battery status for each of the cards 2810 and 2820, an icon 2832 associated with the position information, and an icon 2834 indicating that they are connected through short-range communication may be displayed together.

In order to display the battery status, the control unit of the credit card device can transmit information related to the battery remaining amount thereof to the paired wireless communication terminal. The wireless communication terminal 2800 can display the battery information together with the corresponding credit card information. When the battery is consumed below the threshold value, a warning message can be displayed together.

The icon 2832 is an icon requesting location information. If there is an input for the corresponding icon 2832 from the user, the terminal 2800 transmits a location request signal requesting the location information to the paired credit card device 2804 regardless of whether the terminal 2800 is lost or not. Receiving the position request signal, the credit card device 2804 acquires its own location information using the GPS module and returns it to the wireless communication terminal 2800. Then, the wireless communication terminal 2800 can display the returned location information on the display screen.

Icon 2834 represents the pairing state associated with the current local area communication. If the pairing is normal, the corresponding icon 2834 can be displayed in a color or shape indicating a normal state. Otherwise, the icon 2834 may be displayed in a color and shape indicating the abnormal state. The wireless communication terminal 2800 may try to pair the local communication with the corresponding credit card device 2804 when there is an input to the icon 2834 from the user corresponding to the icon display in the abnormal state.

According to another embodiment of the present invention, there may be a setting input function for selecting whether to execute such a loss prevention application. When the application is not executed, the operation of the wireless communication terminal related to the loss is suspended. Then, a signal related to the execution interruption is transmitted to the credit card device so that the credit card device can also be controlled so that the power can be turned off during execution interruption. That is, it can be instructed to operate in the sleep mode. This is optional. The credit card device may be set not to have a separate power on-off regardless of whether the application is running or not.

Credit card device battery discharge prevention

29 is a block diagram illustrating a configuration for preventing battery discharge in a credit card device having a wireless communication function according to an embodiment of the present invention.

29, a very thin insulating layer 2910 (e.g., paper or tape) is provided between the contact terminals of the battery portion and the circuit of the credit card device according to an embodiment of the present invention to prevent discharge of the battery during the distribution process. Etc.) may be inserted to allow the battery to power the circuitry in a manner that removes the insulating layer 2910 after receipt by the end user.

The system or apparatus described above may be implemented as a hardware component, a software component, and / or a combination of hardware components and software components. For example, the systems, devices, and components described in the embodiments may be implemented in various forms such as, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable array ), A programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to execution of the software. For ease of understanding, the processing apparatus may be described as being used singly, but those skilled in the art will recognize that the processing apparatus may have a plurality of processing elements and / As shown in FIG. For example, the processing unit may comprise a plurality of processors or one processor and one controller. Other processing configurations are also possible, such as a parallel processor.

The software may include a computer program, code, instructions, or a combination of one or more of the foregoing, and may be configured to configure the processing device to operate as desired or to process it collectively or collectively Device can be commanded. The software and / or data may be in the form of any type of machine, component, physical device, virtual equipment, computer storage media, or device , Or may be permanently or temporarily embodied in a transmitted signal wave. The software may be distributed over a networked computer system and stored or executed in a distributed manner. The software and data may be stored on one or more computer readable recording media.

The method according to embodiments may be implemented in the form of a program instruction that may be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions to be recorded on the medium may be those specially designed and configured for the embodiments or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks, and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. For example, it is to be understood that the techniques described may be performed in a different order than the described methods, and / or that components of the described systems, structures, devices, circuits, Lt; / RTI > or equivalents, even if it is replaced or replaced.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

Claims (23)

A credit card device having a wireless communication function,
antenna;
A wireless communication module electrically connected to the antenna;
A battery for supplying power to the antenna and the wireless communication module; And
And a case surrounding the antenna, the battery, and the wireless communication module. The method according to claim 1,
Wherein the antenna has a wireless communication function including a multi-band chip antenna. 3. The method of claim 2,
Wherein the multi-band chip antenna has a wireless communication function including an antenna usable for at least two bands of a short-range communication band, a broadband communication band, and a GPS (Global Positioning System) band. The method according to claim 1,
Wherein the antenna has a wireless communication function including an LTCC antenna (Low Temperature Co-fired Ceramic antenna). The method according to claim 1,
An insulating dielectric disposed over the case; And
Further comprising an electrode portion disposed on the insulating dielectric,
Wherein the antenna and the wireless communication module are disposed on the electrode unit. 6. The method of claim 5,
And a wireless communication function including a passivation element between the antenna and the wireless communication module. The method according to claim 6,
A first electrode portion and a second electrode portion are provided on the insulating oil,
Wherein the antenna and the first wireless communication module are disposed on the first electrode unit,
A second wireless communication module and a passivation element are disposed on the second electrode unit, and a passivation element on the second electrode unit is electrically connected to the battery. The method according to claim 1,
And a flexible circuit board (FPCB) disposed on the case,
Wherein the antenna and the wireless communication module are disposed on the flexible circuit board and are electrically connected to the flexible circuit board,
And at least a part of the flexible circuit board is electrically connected to the battery. The method according to claim 1,
Wherein the antenna is disposed at an upper portion of the case,
Wherein the wireless communication module is disposed on a substrate of the antenna,
Wherein at least a portion of the substrate of the antenna is electrically connected to the battery. The method according to claim 1,
Wherein at least one side of the case includes a settlement function area for at least one of a swipe function and an insert function,
Wherein the antenna and the wireless communication module are disposed in an area other than the payment function area. 11. The method of claim 10,
Wherein the antenna and the wireless communication module are arranged in a first plane of the credit card device in a region of approximately 0.6 inches from a top edge and in a crossing area of a right region from a portion approximately 2 cm away from a left edge, Provided credit card device. The method according to claim 1,
Wherein the case has a wireless communication function to form an opening for at least one of the vertical and horizontal directions of the antenna. The method according to claim 1,
Wherein the case comprises a material of at least one of aluminum and plastic. 14. The method of claim 13, wherein when the case is aluminum,
The antenna includes a dielectric substrate, a feed line disposed on a first surface of the dielectric substrate, a slot antenna portion including a slot formed on a second surface of the dielectric substrate, and a second antenna opposed to the second surface, And a cavity formed in the dielectric substrate, the cavity including an opening surface and in close contact with a second surface of the dielectric substrate, the cavity comprising a cavity resonator based on a waveguide, Device. 14. The method of claim 13, wherein when the case is plastic,
Wherein the antenna has a diameter, a radius and an input impedance, the antenna being fed from a source through a ground plane via a feed line, and a metamaterial-based structure adapted to match the input impedance of the antenna, And a wireless communication function. The method according to claim 1,
The antenna is implemented as an ultra-slim waveguide antenna and has a wireless communication function with a thickness of 1.5 mm or less. The method according to claim 1,
Wherein the battery has a wireless communication function including a planar battery. The method according to claim 1,
And a wireless communication function in which a thin insulating layer is inserted between an electrode for electrical contact between the battery and the wireless communication module and the battery to prevent discharge of the battery. The method according to claim 1,
Wherein the thin insulating layer is connected to the outside through one opening of the case so that the user can extract the thin insulating layer. A method for manufacturing a credit card device having a wireless communication function,
Preparing a case lower surface;
Installing an antenna;
Installing a wireless communication module electrically connected to the antenna;
Inserting a battery for supplying power to the antenna and the wireless communication module;
And applying a top surface of the case to surround the antenna, the battery, and the wireless communication module. 21. The method of claim 20,
Printing the entire insulating oil on the lower surface of the case;
Further comprising printing an electrode on the printed dielectric dielectric,
And a wireless communication function for installing the antenna and the wireless communication module on the printed electrode, and inserting a passivation element between the installed antenna and the wireless communication module. 21. The method of claim 20,
Further comprising the step of installing a flexible printed circuit board (FPCB) on the lower surface of the case,
And a wireless communication function in which the antenna and the wireless communication module are installed on the flexible circuit board. 21. The method of claim 20,
Wherein the step of installing the antenna includes the step of installing a substrate-type antenna on the lower surface of the case,
Wherein the step of installing the wireless communication module electrically connected to the antenna comprises installing the wireless communication module on the substrate type antenna.

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