KR101255156B1 - Apparatus for wireless communication - Google Patents

Apparatus for wireless communication Download PDF

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Publication number
KR101255156B1
KR101255156B1 KR1020110137965A KR20110137965A KR101255156B1 KR 101255156 B1 KR101255156 B1 KR 101255156B1 KR 1020110137965 A KR1020110137965 A KR 1020110137965A KR 20110137965 A KR20110137965 A KR 20110137965A KR 101255156 B1 KR101255156 B1 KR 101255156B1
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KR
South Korea
Prior art keywords
antenna
pattern
unit
antenna unit
band
Prior art date
Application number
KR1020110137965A
Other languages
Korean (ko)
Inventor
류병훈
성원모
김남일
엄선용
이경호
Original Assignee
주식회사 이엠따블유
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Priority to KR1020110137965A priority Critical patent/KR101255156B1/en
Application granted granted Critical
Publication of KR101255156B1 publication Critical patent/KR101255156B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • H01Q1/46—Electric supply lines or communication lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
    • H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/06—Details
    • H01Q9/14—Length of element or elements adjustable

Abstract

A wireless communication device is disclosed. A wireless communication apparatus according to an embodiment of the present invention includes a plurality of band-forming parts inserted between a plurality of mutually spaced antenna parts and the plurality of mutually spaced antenna parts to electrically connect the mutually spaced parts of the antenna parts. An antenna; A power supply unit having one side connected to the main board and the other side connected to any one of the plurality of mutually spaced antenna units and electrically connected to the multi-band forming unit; And at least one ground part connected to the main board at one side and connected to at least one antenna part not connected to the power supply part, and electrically connected to the multi-band forming part.

Description

Wireless communication device {APPARATUS FOR WIRELESS COMMUNICATION}

Embodiments of the present invention relate to a wireless communication device, and more particularly, to a wireless communication device including an antenna for transmitting and receiving a multi-band signal.

Recently, a wireless terminal equipped with a function of receiving a TV broadcast signal (including terrestrial DMB broadcasting) while a multimedia transmission and reception function is added to a wireless terminal in addition to functions such as voice communication or text message has been developed and spread. In general, the TV frequency band is divided into a VHF (174 ~ 216 MHz) band and a UHF (470 ~ 870 MHz) band. In Korea, the VHF band is used as the TV frequency band, while the US and Japan use both the VHF band and the UHF band as the TV frequency band. Therefore, in order to receive a TV broadcast signal regardless of a country (or region), the wireless terminal must be able to receive both the VHF band and the UHF band.

Prior art 1

As shown in FIG. 1, the conventional wireless terminal 10 includes an antenna 11 for receiving a VHF band as an external antenna (eg, a load antenna) on one side of the wireless terminal 10, and a UHF band. Receiving the antenna 13 is implemented as a built-in antenna inside the wireless terminal 10. That is, the conventional wireless terminal 10 has separately formed antennas 11 and 13 for receiving the VHF band and the UHF band. In this case, the cost increases as two antennas are manufactured, and a matching circuit is provided for each antenna. Since it must be installed, there is a disadvantage that the volume occupied by the matching circuit on the main board inside the wireless terminal 10 becomes large.

Prior art 2

The conventional wireless terminal receives two VHF bands and one UHF band by placing two matching terminals having different paths on one load antenna on a main board. In this case, since two matching ends having different paths must be formed on the main board, there is a disadvantage in that the volume of the matching circuit in the main board becomes large.

Prior Art 3

In the conventional wireless terminal, a method of forming a double resonance by inserting a helical structure into one rod antenna is used. However, this method can form a double resonance in the VHF band and the UHF band, but in the case of the UHF band, resonance occurs only in some frequency bands and cannot satisfy the full frequency bandwidth of the UHF band reaching about 400 MHz. There is this.

An embodiment of the present invention is to provide a wireless communication device that can receive both the VHF band and UFH band with one antenna, in particular the full frequency band of the UHF band up to 400 MHz.

A wireless communication apparatus according to an embodiment of the present invention includes a plurality of band-forming parts inserted between a plurality of mutually spaced antenna parts and the plurality of mutually spaced antenna parts to electrically connect the mutually spaced parts of the antenna parts. An antenna; A power supply unit having one side connected to the main board and the other side connected to any one of the plurality of mutually spaced antenna units and electrically connected to the multi-band forming unit; And at least one ground part connected to the main board at one side and connected to at least one antenna part not connected to the power supply part, and electrically connected to the multi-band forming part.

At least one of the grounding portion and the power feeding portion is formed such that the other side is connected to surround a portion of an outer circumferential surface of the antenna portion.

The ground portion and the power feeding portion are integrally formed in a modular form mounted on the main board.

According to the exemplary embodiment of the present invention, the matching circuit inserted into the antenna unit may be electrically connected to the power supply unit and the ground unit, respectively, to form resonances in the VHF band and the UHF band, and to implement a wide band in the UHF band. It becomes possible. In addition, by inserting the multi-band forming unit into the antenna to be integrally formed with the antenna, it is not necessary to implement a separate matching circuit on the main board in the wireless terminal. In this case, since the area for the matching circuit is not required on the main board in the wireless terminal, the space efficiency can be increased and the volume of the wireless terminal can be reduced.

1 is a view showing a conventional wireless terminal.
2 is an exploded perspective view of a wireless communication device according to an embodiment of the present invention.
3 is a combined perspective view of a wireless communication device according to an embodiment of the present invention.
4 illustrates an equivalent circuit of a matching circuit according to an embodiment of the present invention.
5 is a graph showing return loss of the antenna unit according to an embodiment of the present invention.
6 is a view showing an antenna unit of a wireless communication device according to another embodiment of the present invention.
Figure 7 is an exploded perspective view of the inside of the antenna unit of the wireless communication device according to another embodiment of the present invention.
8 is an equivalent circuit diagram inside an antenna unit of a wireless communication device according to another embodiment of the present invention.

Hereinafter, a specific embodiment of the wireless communication device of the present invention will be described with reference to FIGS. 2 to 8. However, this is only an exemplary embodiment and the present invention is not limited thereto.

In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

The technical spirit of the present invention is determined by the claims, and the following embodiments are merely means for effectively explaining the technical spirit of the present invention to those skilled in the art to which the present invention pertains.

2 is an exploded perspective view of a wireless communication device according to an embodiment of the present invention, Figure 3 is a combined perspective view of the wireless communication device according to an embodiment of the present invention. For convenience of description, the main body of the radio communication apparatus is omitted.

2 and 3, the wireless communication device 100 includes an antenna unit 102, a multi-band forming unit 104, a power feeding unit 106, and a grounding unit 108. Here, the multi band forming unit 104 is inserted into the antenna unit 102 to form an antenna.

The antenna unit 102 includes a first antenna unit 102-1 and a second antenna unit 102-2. The first antenna unit 102-1 and the second antenna unit 102-2 are formed of a conductive material. Here, the second antenna unit 102-2 may be composed of multiple stages that may be pulled out. The multi band forming unit 104 is inserted into the first antenna unit 102-1 and the second antenna unit 102-2 between the first antenna unit 102-1 and the second antenna unit 102-2. It is formed. In this case, the first antenna unit 102-1 and the second antenna unit 102-2 are electrically connected through the multi-band forming unit 104. A detailed description thereof will be described later.

The multi-band forming unit 104 includes a first structure 111 and a second structure 113. The first structure 111 and the second structure 113 are formed of an insulating material. Here, the multi-band forming unit 104 is inserted into the antenna unit 102 in a state where the lower surface of the second structure 113 is in close contact with the upper surface of the first structure 111. In this case, the shape of the multi-band forming unit 104 is preferably formed corresponding to the internal space of the antenna unit 102, but is not necessarily limited thereto, and forms the multi-band forming unit 104 in various other shapes. You may.

The matching circuit 112 is formed in the first structure 111. The matching circuit 112 is electrically connected to the power supply section 106 and the ground section 108, respectively, so that the antenna section 102 implements multiple bands. A detailed description thereof will be given later. The matching circuit 112 includes a first pattern 121, a second pattern 123, a third pattern 125, a first passive element 127, and a second passive element 129. Here, a portion of the first pattern 121, the second pattern 123, and the third pattern 125 are formed along the outer circumferential surface of the first structure 111. In this case, reliability of the electrical connection between the first pattern 121 and the first antenna unit 102-1 can be improved, and the second pattern 123, the third pattern 125, and the second antenna unit 102-2 are improved. 2) can increase the reliability of the electrical connection.

The first passive element 127 is formed between the first pattern 121 and the third pattern 125 to connect the first pattern 121 and the third pattern 125. The second passive element 129 is formed between the second pattern 123 and the third pattern 125 to connect the second pattern 123 and the third pattern 125. Here, the first passive element 127 and the second passive element 129 may be any one of an inductor and a capacitor.

The first structure 111 may be made of, for example, a laser direct structuring (LDS) material. In this case, the first pattern 121, the second pattern 123, and the third pattern 125 may be formed by the LDS method. For example, after laser processing the first structure 111, the plating process may be performed to form the first pattern 121, the second pattern 123, and the third pattern 125. Particularly, when a part of the first pattern 121, the second pattern 123, and the third pattern 125 is formed along the outer circumferential surface of the first structure 111, the LDS method also facilitates the three-dimensional pattern. It can be formed. As such, when the first pattern 121, the second pattern 123, and the third pattern 125 are formed by the LDS method, the manufacturing process and manufacturing cost of the multi-band forming unit 104 may be reduced. The dimensional pattern can also be easily formed. Meanwhile, although the first pattern 121, the second pattern 123, and the third pattern 125 have been described as being formed by the LDS method, the present invention is not limited thereto. For example, conductive ink may be used. After the respective patterns are formed, the plating process may be performed, or the ink printing plating method may be used to form each pattern with a conductive ink having higher conductivity. In this case, the first structure 111 may be made of a plastic material.

The first locking step 131 and the second locking step 134 may be formed in the first structure 111 and the second structure 113, respectively. Here, when the multi-band forming unit 104 is inserted into the first antenna unit 102-1 and the second antenna unit 102-2, the upper end of the first antenna unit 102-1 may have a first locking step. 131 is caught and seated, and a lower end of the second antenna unit 102-2 is caught and seated by the second latching jaw 134. That is, the first antenna unit 102-1 and the second antenna unit 102-2 are formed to be spaced apart from each other with the first locking step 131 and the second locking step 134 interposed therebetween. In this case, since the first structure 111 and the second structure 113 are made of an insulating material, the first antenna portion 102-1 and the second antenna portion 102-2 appear to be insulated in appearance.

However, when the upper end of the first antenna unit 102-1 is seated on the first locking step 131, the first pattern 117 formed on the outer circumferential surface of the first structure 111 is formed. And a second antenna portion 102-2 is electrically connected to a portion of the second antenna portion 102-2 when the lower end of the second antenna portion 102-2 is seated on the second latching jaw 134. Since the first and second antenna parts 102-1 and 102-2 are electrically connected to portions of the second pattern 123 and the third pattern 125 formed in the second circuit 123 and the third pattern 125, the matching circuit 112 is connected to each other. Electrical connection.

As described above, in the embodiment of the present invention, when the multi-band forming unit 104 is inserted into the antenna unit 102, the multi-band forming unit 104 and the antenna unit 102 are directly electrically connected to each other. There is no need for a separate connection structure for connecting them between the section 104 and the antenna section 102.

In this case, the first catching jaw 131 and the second catching jaw 134 are formed in the first structure 111 and the second structure 113 to form the first antenna part 102-1 and the second antenna part 102. -2) is shown as being respectively seated, but is not limited thereto, and locking means (for example, a stopper) on an upper end of the first antenna unit 102-1 and a lower end of the second antenna unit 102-2. May be formed.

The power supply unit 106 is coupled to the first antenna unit 102-1. The power supply unit 106 is electrically connected to a power supply circuit formed on a main board (not shown) in the wireless communication device 100. In this case, the antenna unit 102 receives power through the power feeding unit 106.

Specifically, when a current is supplied through the power supply unit 106, the supplied current is supplied to the power supply unit 106 → the first antenna unit 102-1 → the first pattern 121 → the first passive element 127 → The third pattern 125 moves through the second antenna unit 102-2 to feed power to the antenna unit 102.

The feeder 106 is, for example, separately manufactured and then coupled to other devices (eg, a main board or a rear case) of the wireless communication device 100 in the wireless communication device 100, It may be combined with the first antenna unit 102-1. In this case, the first antenna unit 102-1 may be inserted into and coupled to the power feeding unit 106. In this case, since the surface contact with the power supply section 106 over the entire outer circumferential surface of the first antenna section 102-1, the reliability of the electrical connection can be improved. However, the present invention is not limited thereto, and the power supply unit 106 may be formed to be connected to the first antenna unit 102-1 by point contact or line contact.

The ground portion 108 is coupled to the second antenna portion 102-2. The ground unit 108 is electrically connected to a ground (not shown) formed on the main board in the wireless communication device 100. In this case, the antenna unit 102 is connected to ground (not shown) through the ground unit 108 and grounded.

For example, the ground unit 108 may be separately manufactured and then coupled to other devices (eg, a main board or a rear case) of the wireless communication device 100 in the wireless communication device 100. It may be combined with the second antenna unit 102-2. In this case, the second antenna unit 102-2 may be inserted into and coupled to the ground unit 108. In this case, since the surface contacts the ground portion 108 over the entire outer circumferential surface of the second antenna portion 102-2, the reliability of the electrical connection can be improved. However, the present invention is not limited thereto, and the ground portion 108 may be formed to be connected to the second antenna portion 102-2 by point contact or line contact.

Here, the power supply unit 106 and the ground unit 108 are separately manufactured, and then coupled to other devices (for example, a main board or a rear case) of the wireless communication device 100, and the first antenna. Although described as being coupled to the unit 102-1 and the second antenna unit 102-2, the power supply unit 106 and the ground unit 108 are not limited to the main board of the wireless communication device 100. Alternatively, when manufacturing the rear case, the insert may be integrally formed by insert injection into the main board or the rear case, and then may be coupled to the first antenna unit 102-1 and the second antenna unit 102-2.

In addition, although the power supply unit 106 and the ground unit 108 is illustrated here as being formed separately, the present invention is not limited thereto, and the power supply unit 106 and the ground unit 108 may be mounted on the main board of the wireless communication device 100. It may be formed integrally with the modular.

4 illustrates an equivalent circuit of a matching circuit according to an embodiment of the present invention.

2 and 4, the first passive element 127 is formed by connecting the first pattern 121 and the third pattern 125. Here, the first pattern 121 is electrically connected to the power supply 150 side in the wireless communication device 100 through the first antenna unit 102-1 and the power supply unit 106, and the third pattern 125. Is electrically connected to the second antenna unit 102-2. In this case, the first passive element 127 is connected in series between the power feeding 150 side and the antenna unit 102.

On the other hand, the second passive element 129 is formed by connecting the second pattern 123 and the third pattern 125. Here, the second pattern 123 is electrically connected to the ground in the wireless communication device 100 through the second antenna unit 102-2 and the ground unit 108, and the third pattern 125 is the second antenna. It is electrically connected to the part 102-2. In this case, the second passive element 129 is connected in parallel between the power supply 150 side and the antenna unit 102 and grounded.

As such, the matching circuit 112 includes a first passive element 127 connected between the power supply 150 side and the antenna unit 102 and a second passive element 129 formed between the ground and the antenna unit 102. As a result, a double resonance (for example, a VHF band and a UHF band) can be formed, so that one signal can receive both the VHF band and the UHF band. At this time, by adjusting the values of inductance or capacitance of the first passive element 127 and the second passive element 129, resonance may be formed in the VHF band and the UHF band, respectively, and the broadband may be realized in the UHF band. do.

In addition, the multi-band forming unit 104 is inserted into the antenna unit 102 and integrally formed with the antenna, so that a separate matching circuit may not be implemented on the main board in the wireless terminal. In this case, since the area for the matching circuit is not required on the main board in the wireless terminal, the space efficiency can be increased and the volume of the wireless terminal can be reduced.

5 is a graph illustrating return loss of the antenna unit according to the exemplary embodiment of the present invention. Here, when the return loss is -5 ~-6 dB or less, it can be seen that the resonance is formed in the frequency band.

Referring to FIG. 5, it can be seen that the antenna unit 102 has resonances formed in the VHF band (174 to 216 MHz) and the UHF (470 to 870 MHz), respectively, to form a double resonance. At this time, in the case of UHF (470 ~ 870MHz) it can be seen that the resonance is formed in the entire frequency band having a broadband. That is, by implementing the matching circuit 112 to be electrically connected to the feeder and the ground, respectively, it is possible to form a resonance in the VHF band and the UHF band, respectively, it is possible to implement a wideband in the UHF band.

6 is a view showing an antenna unit of a wireless communication device according to another embodiment of the present invention, Figure 7 is an exploded perspective view of the inside of the antenna unit of the wireless communication device according to another embodiment of the present invention. Here, a case where the antenna unit of the wireless communication device is grounded at two places is shown.

6 to 8, the antenna unit 202 of the wireless communication device 200 includes a first antenna unit 202-1, a second antenna unit 202-2, and a third antenna unit spaced apart from each other. (202-3).

The first antenna unit 202-1, the second antenna unit 202-2, and the third antenna unit 202-3 are electrically connected to each other through the multi band forming unit 204 inserted into the antenna unit 202. Connected. The multi-band forming unit 204 includes a first structure 211 and a second structure 213, and a matching circuit 212 is formed in the first structure 211.

The matching circuit 212 may include a first pattern 221, a second pattern 223, a third pattern 225, a fourth pattern 227, a first passive element 231, a second passive element 233, A third passive element 235, and a fourth passive element 237. Here, one portion of the first pattern 221, the second pattern 223, the third pattern 225, and the fourth pattern 227 is formed along the outer circumferential surface of the first structure 211.

The first passive element 231 is formed between the first pattern 221 and the second pattern 223 to connect the first pattern 221 and the second pattern 223. The second passive element 233 is formed between the second pattern 223 and the fourth pattern 227 to connect the second pattern 223 and the fourth pattern 227. The third passive element 235 is formed between the first pattern 221 and the third pattern 225 to connect the first pattern 221 and the third pattern 225. The fourth passive element 237 is formed between the third pattern 225 and the fourth pattern 227 to connect the third pattern 225 and the fourth pattern 227.

The first antenna unit 202-1 and the second antenna unit 202-2 are electrically connected to each other through the first pattern 221, the first passive element 231, and the second pattern 223. The second antenna unit 202-2 and the third antenna unit 202-3 are electrically connected to each other through the second pattern 223, the second passive element 233, and the fourth pattern 227. The first antenna unit 202-1 and the third antenna unit 202-3 may include a first pattern 221, a third passive element 235, a third pattern 225, a fourth passive element 237, And a fourth pattern 227.

Here, a power supply unit (not shown) is connected to the first antenna unit 202-1 to supply power, and a first ground unit (not shown) is connected to the second antenna unit 202-2 to form a primary ground. The second ground part (not shown) is connected to the third antenna part 202-3 to form a secondary ground.

In this case, as shown in FIG. 8, the first passive element 231 and the second passive element 233 are connected in series between the power supply 250 side and the antenna unit 202, and the first passive element ( The ground is connected in parallel between the second passive element 231 and 233 to be grounded. In addition, the third passive element 235 and the fourth passive element 237 are connected in series between the power supply 250 side and the antenna unit 202, and the third passive element 235 and the fourth passive element 237 are connected. The ground is connected in parallel and grounded.

As such, when the antenna unit 202 is implemented to be grounded in two places of the second antenna unit 202-2 and the third antenna unit 202-3, the pattern and the passive elements in the matching circuit 212 may be varied. It can be arranged in the form and number, through which the antenna unit 202 can easily design the matching circuit 212 to receive both the VHF band and UHF band signal, and to receive the entire band of the UHF band. Will be. Herein, although the antenna unit 202 is illustrated as being grounded in two places, the present invention is not limited thereto, and the antenna unit 202 may be grounded in two or more places.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, I will understand. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

102: antenna unit 102-1: first antenna unit
102-2: second antenna portion 104: multi-band forming portion
106: power supply unit 108: grounding unit
111: first structure 112: matching circuit
113: second structure 121: first pattern
123: Second Pattern 125: Third Pattern
127: first passive element 129: second passive element
131: first locking jaw 134: second locking jaw

Claims (3)

An antenna including a plurality of mutually spaced antenna portions and a multi band forming portion inserted between the plurality of mutually spaced antenna portions to electrically connect the mutually spaced portions of the antenna portions;
A power supply unit having one side connected to the main board and the other side connected to any one of the plurality of mutually spaced antenna units and electrically connected to the multi-band forming unit; And
And at least one ground part connected to the main board at one side and connected to at least one antenna part not connected to the power supply part, and at least one ground part electrically connected to the multi-band forming part. .
The method of claim 1,
At least one of the ground portion and the feed portion,
The other side is formed so as to surround and connect a portion of the outer peripheral surface of the antenna unit.
The method of claim 1,
The ground portion and the feeder,
A wireless communication device, formed integrally with the module mounted on the main board.
KR1020110137965A 2011-12-20 2011-12-20 Apparatus for wireless communication KR101255156B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110137965A KR101255156B1 (en) 2011-12-20 2011-12-20 Apparatus for wireless communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110137965A KR101255156B1 (en) 2011-12-20 2011-12-20 Apparatus for wireless communication

Publications (1)

Publication Number Publication Date
KR101255156B1 true KR101255156B1 (en) 2013-04-22

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Application Number Title Priority Date Filing Date
KR1020110137965A KR101255156B1 (en) 2011-12-20 2011-12-20 Apparatus for wireless communication

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Country Link
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990023431A (en) * 1997-08-07 1999-03-25 하네다 유이찌 Multi-Band Antennas for Mobile Wireless Devices
KR20100136620A (en) * 2009-06-19 2010-12-29 (주)파트론 Broadcast receiving antenna having inductor chip mounted

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990023431A (en) * 1997-08-07 1999-03-25 하네다 유이찌 Multi-Band Antennas for Mobile Wireless Devices
KR20100136620A (en) * 2009-06-19 2010-12-29 (주)파트론 Broadcast receiving antenna having inductor chip mounted

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