KR20110049632A

KR20110049632A - Card having antena

Info

Publication number: KR20110049632A
Application number: KR1020100032100A
Authority: KR
Inventors: 김선근
Original assignee: 유비벨록스(주)
Priority date: 2009-11-04
Filing date: 2010-04-08
Publication date: 2011-05-12

Abstract

PURPOSE: A card is provided to improve a transceivng ability of a wireless module by mounting an antenna to a card including a card a smart card chip and a wireless module. CONSTITUTION: A card comprises a smart card chip(120), a wireless module, and an antenna(110). The wireless module performs a wireless communication with an external side by being connected to an antenna through a contact point. The antenna is formed on a substrate of a front side and a back side for improving a transmission efficiency of a wireless data. The antenna is connected through a via hole(112). An amplifier circuit(111) is included in one side of the antenna.

Description

Card with antenna {Card having antena}

The present invention relates to a card provided with an antenna. More specifically, the present invention relates to a card having an antenna for realizing excellent performance in a card including a smart card chip such as a universal subscriber identity module (USIM) and a subscriber identification module (SIM).

Recently, as the number of applications through the combination of various modules of the Universal Subscriber Identity Module (USIM) and the Subscriber Identification Module (SIM) card increases, new methods have been introduced to dramatically increase the utilization of the memory card. In other words, new cards that combine wireless modules such as UWB, WLAN, Zigbee, RFID, GPS, and Bluetooth are being created, and new types of business models are emerging.

In recent years, information and communication devices have been demanded by consumers for higher processing speeds and higher utilization of data, and the use of cards has increased. In addition, the Universal Subscriber Identity Module (USIM) and Subscriber Identification Module (SIM) cards are being developed in a complex structure for various services.

In other words, a lot of combo cards combining memory chips and wireless modules are being developed. This is to promote a user's convenience in using a lot of information provided by operators, and the quality of services is important.

When performing a wireless service, which is one of the new types of business, an antenna is essential to increase the performance of the service. The quality of the wireless service performed using the wireless module is the ability to transmit and receive data wirelessly. To improve this capability, an antenna must be installed and an optimum antenna must be designed.

As an important term in antenna design, return loss is a reflection of power at the point of impedance mismatch in the transmission system when transmitting an electrical signal, so that part of the incident power becomes reflected power. It means the ratio of power. The most prominent feature of the S parameter is also the parameter seen in the frequency domain. At low frequencies it is common to analyze on the time axis, but at high frequencies the results of operation on the frequency axis become important. In the high frequency region, the concept of channel becomes important. That is, the signal must be distributed in the frequency domain to suit this channel. The S parameter represents a port-to-port input-to-output ratio at any frequency in the frequency domain as mentioned above, making it a useful parameter that can be used to determine the operating characteristics in the high-frequency region. In addition, the reason for the use of the S parameter is often found for measurement reasons. At high frequencies, since energy is transmitted as a wave energy, a kind of electromagnetic field, it is very difficult to express the current simply representing the amount of charge transfer. That is, current measurement in a high frequency circuit is very difficult. If the frequency is too high, the period of the signal is very short, making the measurement point very difficult. The solution to this is to use relative values. That is, using the S parameter. In addition, the noise figure (NF) in a communication system is measured by the degradation of the signal-to-noise ratio (SNR) caused by RF elements. The noise figure is the ratio of the noise produced by thermal noise at the input terminals to the output noise strength of the device at the reference noise temperature (typically 290 K). Therefore, the noise figure is the ratio of the noise actually output, assuming that the device itself does not cause noise. It is a number that can define the performance of a wireless receiver.

Optimal wireless antennas are formed in USIM and SIM cards that combine Universal Subscriber Identity Module (USIM) and Subscriber Identification Module (SIM) cards with wireless modules such as UWB, WLAN, Zigbee, RFID, GPS, Bluetooth, NAND FLASH, and MCU CHIP. The reality is that there are many problems. In addition, since the thickness and size of the Universal Subscriber Identity Module (USIM) and Subscriber Identification Module (SIM) cards are internationally standardized, there is a difficulty in forming a wireless antenna because they cannot be arbitrarily changed.

In order to solve the above problems, the present invention to improve the quality of the wireless service, and to increase the utilization of the card including a smart card chip, such as a wireless module, Universal Subscriber Identity Module (USIM), Subscriber Identification Module (SIM), etc. Smart card chips and antennas such as the Universal Subscriber Identity Module (USIM) and the Subscriber Identification Module (SIM) are installed in one package to make the antenna with the optimal characteristics for various modules and to be conveniently used by consumers. It is an object to provide a card with one antenna.

As a technical idea for achieving the above object, the card is provided with an antenna of the present invention smart card chip; A wireless module connected to an antenna through a contact to perform wireless communication with the outside; And an antenna formed on the front and back substrates to be connected to the wireless module through a contact and to improve the transmission and reception of wireless data. The antennas formed on the front and rear surfaces are connected to via holes, and on either side of the antenna A card with an antenna, characterized in that an amplifying circuit is formed.

The wireless module may use any one selected from UWB, WLAN, Zigbee, RFID, GPS, and Bluetooth.

Preferably, the smart card chip may use a USIM chip or a SIM chip.

The antenna may be manufactured in a pattern form using a conductive ink.

In addition, another embodiment of the card with an antenna of the present invention is a smart card chip; A wireless module connected to an antenna through a contact to perform wireless communication with the outside; And a chip-shaped antenna connected to the wireless module through a contact and formed inside the card to improve the transmission and reception of wireless data, wherein the amplification circuit is formed in the antenna. do.

Preferably, the smart card chip may use a USIM chip or a SIM chip.

Another embodiment of the card with an antenna of the present invention is a smart card chip; A wireless module connected to an antenna through a contact to perform wireless communication with the outside; And an antenna connected to the wireless module through a contact point and attached to an antenna-shaped groove formed outside the card to improve transmission and reception of wireless data, wherein the antenna is provided with an amplifying circuit. Cards are presented.

The antenna may be manufactured in a pattern form using a metal, a conductive tape and a conductive film.

The smart card chip may use a USIM chip or a SIM chip.

The wireless module may be made of any one selected from UWB, WLAN, Zigbee, RFID, GPS, and Bluetooth.

Another embodiment of the card with an antenna of the present invention is a smart card chip; A wireless module connected to an antenna through a contact to perform wireless communication with the outside; And an antenna connected to the wireless module through a contact point and formed inside or outside to improve transmission and reception of wireless data, wherein the antenna is provided with an antenna, characterized in that an amplification circuit is formed.

Preferably, the antenna may be manufactured in a pattern form using any one or a plurality selected from a crowd consisting of conductive ink, metal, conductive tape, and conductive film.

The smart card chip is characterized in that the USIM chip or SIM chip.

The card provided with the antenna is characterized in that the line width of the antenna is between 0.1mm and 0.2mm.

The card provided with the antenna is characterized in that the interval of the antenna is between 0.1mm to 0.2mm.

Preferably, the card with the antenna may be supplied with 3V and 0.03A to the amplification circuit.

By providing a card with an antenna as described above, a card including a smart card chip and a wireless module, such as a universal subscriber identity module (USIM) chip and a subscriber identification module (SIM) chip, which are made compact and mounted inside a mobile phone, are provided. Equipped with an antenna to increase the transmission and reception capabilities of the wireless module has the effect that can perform a wireless service in a wider area.

In addition, since the quality of the wireless service can be improved, consumers can conveniently use services of various contents provided by operators.

1 is a view of the front side of a first embodiment of a card with an antenna of the present invention.
Figure 2 is a view of the back of the first embodiment of the card with the present inventors antenna.
FIG. 3 shows the return loss of the amplifying circuit in the frequency domain when 3V and 0.03A are supplied to the amplifying circuit 111, the line width of the antenna 110 is 0.15 mm, and the interval between the antennas is 0.15 mm. Is shown as the size of the S parameter.
4 shows the electric field strength of the amplifying circuit when the 3V and 0.03A are supplied to the amplifying circuit 111, the line width of the antenna 110 is 0.15 mm, and the interval between the antennas is 0.15 mm. In Probe size is shown.
5 shows the magnitude of the S parameter in the frequency domain when the line width of the antenna 110 is changed to 0.1 mm, 0.15 mm, or 0.2 mm.
FIG. 6 shows the size of the S parameter in the frequency domain when the interval of the antenna 110 is changed to 0.1 mm, 0.15 mm, or 0.2 mm.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, configurations and operations of embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 shows the front side of a first embodiment of a card with an antenna of the present invention. Fig. 2 shows the back side of the first embodiment of the card with the present inventors antenna.

As shown in FIG. 1 and FIG. 2, the card 100 having the antenna according to the first embodiment includes an antenna 110, an amplifying circuit 111, and a smart card chip 120 formed on the front and rear surfaces of the card. Include. Preferably, the smart card chip 120 may use a Universal Subscriber Identity Module (USIM) chip or a Subscriber Identification Module (SIM) chip.

In the method of manufacturing a card 100 with an antenna according to the first embodiment, first, the amplification circuit 111 is formed on the antenna 110 formed on the front surface of the substrate of the card 100 having the antenna. Next, the antenna line is connected to the via hole 112 from the front (TOP) to the back (BOTTOM). And the antenna 110 is further formed on the back (BOTTOM). The antenna 110 may be manufactured in a pattern form using a conductive ink.

The configuration of the first embodiment is as follows. As shown in FIG. 1 and FIG. 2, the card 100 provided with the antenna of the present invention includes a smart card chip 120, a wireless module (not shown), and an antenna 110. The wireless module (not shown) is connected to the antenna 110 to perform wireless communication with the outside. Preferably, the wireless module may be selected from UWB, WLAN, Zigbee, RFID, GPS, and Bluetooth.

The antenna 110 is formed on the front and rear substrates to improve the transmission and reception of wireless data. The antenna 110 formed at the front and rear surfaces is connected to the via hole 112, and the amplification circuit 111 is formed at the front antenna.

The following describes a second embodiment and a third embodiment of a card with an antenna of the present invention. The second embodiment and the third embodiment differ only in the part and shape in which the antenna is installed in the first embodiment and the drawings are omitted.

Next, a second embodiment of the card provided with the antenna of the present invention will be described. The second embodiment is different from the first embodiment in the configuration of the antenna. The second embodiment of the card is equipped with an antenna is a smart card chip, a wireless module connected to the antenna through the contact through the wireless communication with the outside and the wireless module through the contact point to improve the transmission and reception of wireless data card It includes a chip-shaped antenna formed therein. An amplifier circuit is formed in the antenna. Preferably, the smart card chip may use a USIM chip or a SIM chip. In addition, the wireless module may be selected from UWB, WLAN, Zigbee, RFID, GPS, Bluetooth.

Next, a third embodiment of the card provided with the antenna of the present invention will be described. The configuration of a card with an antenna according to the third embodiment is a smart card chip, a wireless module connected to the antenna via a contact and wirelessly communicating with the outside, and a wireless module connected to the wireless module through a contact to improve transmission and reception of wireless data. It includes an antenna bonded to the antenna-shaped groove formed on the outside. An amplifier circuit is formed in the antenna. Preferably, the antenna is manufactured in a pattern form using a metal, a conductive tape and a conductive film, and the smart card chip may use a USIM chip or a SIM chip. In addition, the wireless module may be selected from UWB, WLAN, Zigbee, RFID, GPS, Bluetooth.

The core of the card provided with the antenna of the present invention is to form an antenna by integrating with the card using a PCB pattern antenna, a chip antenna, a metal, a conductive ink, a conductive tape and a conductive ink on the card. In addition to the first to third embodiments, the present invention uses materials such as metals, conductive inks, conductive tapes and conductive films in order to make the antenna of optimum characteristics while overcoming the thickness limitation to make the antenna. It is also possible to manufacture various types of antennas and integrate them with the card. That is, antennas manufactured in various forms are applied to the inside and the outside of a card including a smart card chip such as a universal subscriber identity module (USIM) and a subscriber identification module (SIM).

Next, the experimental results for finding the optimal embodiment when specifying the voltage and current supplied to the amplifier circuit 111 and changing the line width of the antenna 110 and the distance between the antenna 110 will be described. FIG. 3 shows the return loss of the amplifier circuit in the frequency domain when 3V and 0.03A are supplied to the amplifier circuit 111, and the line width of the antenna 110 is 0.15 mm and the interval between the antenna 110 is 0.15 mm. It is shown by the size of the S parameter. The noise figure at this time is 34nF. The magnitude of the S parameter is smallest when the frequency magnitude is 0.0135 Frequency / GHz. 4 shows the electric field strength of the amplifying circuit when the 3V and 0.03A are supplied to the amplifying circuit 111, the line width of the antenna 110 is 0.15 mm, and the interval between the antennas is 0.15 mm. In Probe size is shown. The probe size is largest when the frequency size is 0.0135 Frequency / GHz. 5 shows the magnitude of the S parameter in the frequency domain when the line width of the antenna 110 is changed to 0.1 mm, 0.15 mm, or 0.2 mm. FIG. 6 shows the size of the S parameter in the frequency domain when the interval of the antenna 110 is changed to 0.1 mm, 0.15 mm, or 0.2 mm.

When the line width of the antenna 110 is smaller than 0.1 mm or larger than 0.2 mm, or when the distance between the antenna 110 is smaller than 0.1 mm or 0.2 mm, interference and redundancy with the PCB board packaged in the USIM card Because of the influence of, the optimum noise figure cannot be obtained.

When calculating the length of the loop antenna corresponding to the ISO standard of 13.56Mhz of RF transaction, λ = C / F, the width of the loop antenna is a and the length of the loop is b, approximately 2a + 2b = λ. 221.24 Cm. Where C is the velocity of the wavelength, F is the frequency and λ is the wavelength. Even if the shortening ratio (0.9 to 0.95) is reflected, a minimum value of 199.116 cm is obtained. That is, even if the total length of the desired loop antenna is simply calculated, at least 25 turns should be wound since the general USIM has a length of 2.5 cm and a length of 1.5 cm. Therefore, considering the interference with the PCB board packaged on the USIM card and the line-interference of the loop antenna wound by redundancy, it is obvious that the antenna is not easy to implement. In general, a dipole antenna or a zip antenna is applied with a half wavelength or a length of λ / 4. Therefore, the present invention calculates the length of the antenna by applying a wavelength of λ / 3 to the loop antenna. The antenna length calculated up to the shortening ratio divided by 3 is 66.372Cm. When it is wound on a USIM card, it can wind four wheels. Since the impedance of a typical loop antenna is 60Ω, a lot of experiments have been conducted to compensate and amplify it, and the best performance has been achieved when corrected to a value of 34nF.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art may implement the present invention in other specific forms without changing the technical spirit or essential features of the present invention. You will understand that. Accordingly, the embodiments described above are exemplary in all respects and not restrictive.

The present invention provides a transmission and reception capability of a wireless module by mounting an antenna on a card including a smart card chip and a wireless module such as a USIM (Universal Subscriber Identity Module) chip and a SIM (Subscriber Identification Module) chip that are manufactured in a small size and mounted inside a mobile phone. It is very useful in industry because it has the effect of increasing wireless service area to perform wireless service in a wider area.

100: card with an antenna
110: antenna
111: amplification circuit
112: via hole
120: smart card chip

Claims

In a card with an antenna,
Smart card chip;
A wireless module connected to an antenna through a contact to perform wireless communication with the outside; And
Is connected to the wireless module through the contact point and includes an antenna formed on the front and rear substrate to improve the transmission and reception of wireless data,
Antennas formed at the front and rear surfaces are connected to via holes,
And an amplifier circuit formed on one side of the antenna.

The method of claim 1,
The wireless module,
Card provided with the antenna, characterized in that made of any one selected from UWB, WLAN, Zigbee, RFID, GPS and Bluetooth.

The method of claim 1,
The smart card chip,
Card provided with the antenna, characterized in that the USIM chip or SIM chip.

The method of claim 1,
The antenna,
Card provided with the antenna, characterized in that it is produced in a pattern form using a conductive ink.

In a card with an antenna,
Smart card chip;
A wireless module connected to an antenna through a contact to perform wireless communication with the outside; And
Is connected to the wireless module through the contact point and includes a chip-shaped antenna formed inside the card to improve the transmission and reception of wireless data,
The antenna is provided with an antenna, characterized in that the antenna is provided with a card.

6. The method of claim 5,
The smart card chip,
Card provided with the antenna, characterized in that the USIM chip or SIM chip.

6. The method of claim 5,
The wireless module,
Card provided with the antenna, characterized in that made of any one selected from UWB, WLAN, Zigbee, RFID, GPS and Bluetooth.

In a card with an antenna,
Smart card chip;
A wireless module connected to an antenna through a contact to perform wireless communication with the outside; And
An antenna connected to the wireless module through a contact point and attached to an antenna-shaped groove formed outside the card to improve transmission and reception of wireless data,
The antenna is provided with an antenna, characterized in that the antenna is provided with a card.

The method of claim 8,
The antenna,
The card with the antenna, characterized in that it is produced in a pattern form using any one or more selected from the group consisting of metal, conductive tape and conductive film.

The method of claim 8,
The smart card chip,
Card provided with the antenna, characterized in that the USIM chip or SIM chip.

The method of claim 8,
The wireless module,
Card provided with the antenna, characterized in that made of any one selected from UWB, WLAN, Zigbee, RFID, GPS and Bluetooth.

In a card with an antenna,
Smart card chip;
A wireless module connected to an antenna through a contact to perform wireless communication with the outside; And
An antenna is connected to the wireless module through a contact point and includes an antenna formed inside or outside the card provided with the antenna to improve transmission and reception of wireless data.
The antenna is a card having an antenna, characterized in that the amplification circuit is formed.

The method of claim 12,
The antenna,
The card with the antenna, characterized in that it is produced in a pattern form using any one or a plurality selected from the group consisting of a conductive ink, a metal, a conductive tape and a conductive film.

The method of claim 12,
The smart card chip,
Card provided with the antenna, characterized in that the USIM chip or SIM chip.

The method of claim 12,
The wireless module,
Card provided with the antenna, characterized in that made of any one selected from UWB, WLAN, Zigbee, RFID, GPS and Bluetooth.

The method according to claim 1 or 8,
The card provided with the antenna,
And a line width of the antenna is between 0.1 mm and 0.2 mm.

The method according to claim 1 or 8,
The card provided with the antenna,
And a spacing of the antennas is between 0.1 mm and 0.2 mm.

The method according to claim 1 or 8,
The card provided with the antenna,
And 3 V and 0.03 A are supplied to the amplifying circuit.