KR20010086654A - Folder type cellularphone attached a micro-strip antenna at the front of its case - Google Patents

Folder type cellularphone attached a micro-strip antenna at the front of its case Download PDF

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Publication number
KR20010086654A
KR20010086654A KR1020000010308A KR20000010308A KR20010086654A KR 20010086654 A KR20010086654 A KR 20010086654A KR 1020000010308 A KR1020000010308 A KR 1020000010308A KR 20000010308 A KR20000010308 A KR 20000010308A KR 20010086654 A KR20010086654 A KR 20010086654A
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KR
South Korea
Prior art keywords
antenna
cellular phone
case
microstrip antenna
dielectric layer
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KR1020000010308A
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Korean (ko)
Inventor
김인광
송재관
Original Assignee
송문섭
주식회사 현대큐리텔
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Priority to KR1020000010308A priority Critical patent/KR20010086654A/en
Publication of KR20010086654A publication Critical patent/KR20010086654A/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
    • H01Q1/243—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 with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
    • 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
    • H01Q1/245—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 with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephone Set Structure (AREA)
  • Support Of Aerials (AREA)

Abstract

PURPOSE: A folder-type mobile phone with a microstrip antenna attached to the front of a case is provided to secure the safety of a user against a harmful electromagnetic wave in calling by shielding the electromagnetic wave radiated to a human body through an antenna in calling. CONSTITUTION: A grounding(4) is installed on a cover(3) of a folder in a mobile phone stapled to a body(2) by centering round on a hinge unit(1). A dielectric layer(5), which has a predetermined number, for example, a dielectric rate of 10.2, is applied to the upper part of the grounding(4). A microstrip antenna(6) operated at 1.9 (MHz) which is a PCS(Personal Communication Service) band, is printed to the upper face of the dielectric layer(5). An LCD(liquid crystal display) panel(7) is located on the grounding(4) of the cover of the folder in the mobile phone.

Description

마이크로 스트립 안테나를 케이스 전면에 부착한 폴더형 휴대폰 {Folder type cellularphone attached a micro-strip antenna at the front of its case}Folder type cellularphone attached a micro-strip antenna at the front of its case}

본 발명은 마이크로 스트립 안테나를 케이스 전면에 부착한 폴더형 휴대폰에 관한 것으로, 특히 폴더형 단말기의 케이스 전면에 유전체를 프린트하고 접지방향을 따라 마이크로 스트립 안테나를 설치하므로써, 통화시 안테나를 통해 인체로 방사되는 전자파를 차단하는 마이크로 스트립 안테나를 케이스 전면에 부착한 폴더형 휴대폰에 관한 것이다.The present invention relates to a clamshell mobile phone having a microstrip antenna attached to the front of the case, and in particular, by printing a dielectric on the front of the case of the clamshell terminal and installing a microstrip antenna along the ground direction, radiating to the human body through the antenna during communication The present invention relates to a clamshell mobile phone having a microstrip antenna attached to the front of a case to block electromagnetic waves.

일반적으로 무선 데이터 통신(wireless data communication)은 이동중인 사람이 무선 송수신이 가능한 휴대형 단말기를 이용하여 문자, 숫자, 영상 등 각종 데이터를 무선으로 주고 받는 통신기능을 말한다. 즉, 셀룰러폰, 휴대용 컴퓨터, 팩시밀리, 신용카드 조회기등 각종 단말기를이용하여 이동중에 양방향으로 자료를 교환하거나 검색하는 이동 통신체계이다. 그런데, 이러한 무선 테이터 통신은 크게 전용 패킷망, 셀룰러, PCS, TRS, 그리고 CT-2 등의 무선 통신망을 통하여 이루어지게 되는데, 이때 이러한 데이터 통신이 원할히 이루어지기 위해서는 단말기들의 통신신호를 중계해 줄 수 있는 기지국 시스템을 다수의 지역에 분산 설치하게 된다.In general, wireless data communication refers to a communication function of wirelessly transmitting and receiving various data such as letters, numbers, and images by using a portable terminal capable of wireless transmission and reception. That is, a mobile communication system that exchanges or retrieves data in both directions while moving by using various terminals such as a cellular phone, a portable computer, a facsimile, and a credit card inquiry machine. By the way, such wireless data communication is largely carried out through a wireless communication network such as a dedicated packet network, cellular, PCS, TRS, and CT-2, in this case can be relayed communication signals of the terminal in order to facilitate the data communication The base station system will be distributed in multiple locations.

그런데, 상기와 같은 단말기 예컨대, 셀룰러폰은 도 1에 도시된 바와같이, 통상 기지국 시스템과 통신을 수행하기 위해 안테나(70)를 구비하게 되는데, 이때 이 안테나(70)는 플립형일 경우 셀룰러폰(71)의 상부 일측에 설치된다. 그리고, 상기 셀룰러폰(72)이 폴더형일 경우는 접철된 힌지부(73)의 상부 일측에 수납가능하도록 설치된다.However, such a terminal, for example, a cellular phone, as shown in Figure 1, is usually provided with an antenna 70 to perform communication with the base station system, the antenna 70 is a flip-type cellular phone ( 71) is installed on the upper side. In addition, when the cellular phone 72 has a folding type, the cellular phone 72 is installed to be accommodated on an upper side of the folded hinge portion 73.

여기서, 상기 안테나(70)는 통상 헬리컬 안테나와 모노폴(MONOPOLE) 안테나가 사용된다.Here, the antenna 70 is typically used a helical antenna and a monopole (MONOPOLE) antenna.

한편, 상기와 같은 셀룰러폰의 동작을 살펴보면, 사용자가 예컨대, 폴더형 셀룰러폰을 사용하여 통화하기를 원할 경우 먼저, 접철된 셀룰러폰(72)을 힌지부(73)를 중심으로 편다음 키패널(도시안됨)을 통해 통화하고자 하는 통화 상대방의 전화번호를 눌러 기지국 시스템(74)으로 채널할당을 요구하게된다. 그러면, 이 셀룰러폰(72)의 채널할당 요구신호가 안테나(70)를 통해 기지국 시스템(74)으로 송출하게 되는데, 이때, 사용자는 셀룰러폰(72)을 자신에 귀에 대고 기지국 시스템(74)으로부터 송출되는 통화 연결음을 확인하게 된다. 그리고, 기지국 시스템(74)으로부터 채널이 할당되어 통화상대방과 통화가 이루어지면 자신의 귀에 대고 있는 셀룰러폰(72)을 통해 통화을 실행하게 된다.On the other hand, looking at the operation of the cellular phone as described above, if the user wants to make a call using, for example, a clamshell cellular phone, first fold the folded cellular phone 72 around the hinge portion 73 and then the key panel (Not shown) presses the phone number of the call counterpart to call to request the channel assignment to the base station system 74. Then, the channel allocation request signal of the cellular phone 72 is transmitted to the base station system 74 through the antenna 70, at which time, the user puts the cellular phone 72 in his ear and moves from the base station system 74. You will see the ring back tone sent out. Then, when a channel is allocated from the base station system 74 to make a call with the call partner, the call is executed through the cellular phone 72 placed on his or her ear.

그러나, 상기와 같은 종래 셀룰러폰은 통신신호를 송출하고 수신하는 안테나(70)가 전방향(omni-directional) 방사형이기 때문에 통화시 안테나(70)를 통해 송수신되는 전파의 전자파가 사용자의 두부쪽으로 다량 방사되게 된다. 그런데, 상기 셀룰러폰(72)의 안테나(70)를 통해 인체로 방사되는 전자파의 60 %는 두부로, 그리고 목,손 등에 의해 흡수되게 되는데, 이때 이 전자파는 최근 인체에 유해한 것으로 판명되어 셀룰러폰 사용자의 안전성을 상당히 저하시키게 됨은 물론세계적으로 인체로 방사되는 전자파의 양을 제한하는 안전 규격 예컨대, ANSI/IEEE 안전규격이 제정되어 셀룰러폰의 전자파 방사를 제한하고 있으므로 이에따라 상기 전방향 방사 안테나를 쓰는 제품의 사용성을 상당히 감소되는 문제점이 있었다.However, in the conventional cellular phone as described above, since the antenna 70 for transmitting and receiving communication signals is omni-directional, a large amount of electromagnetic waves transmitted and received through the antenna 70 during communication are directed toward the head of the user. Will be radiated. By the way, 60% of the electromagnetic waves emitted to the human body through the antenna 70 of the cellular phone 72 is absorbed by the head, neck, hands, etc. At this time, the electromagnetic wave has recently been found to be harmful to the human body Safety standards that limit the amount of electromagnetic radiation radiated to the human body worldwide, as well as significantly reduce the safety of the user, for example, ANSI / IEEE safety standards have been enacted to limit the electromagnetic radiation of cellular phones accordingly to use the omnidirectional radiation antenna There was a problem that the usability of the product is considerably reduced.

이에 본 발명은 상기와 같은 제반 문제점을 해결하기 위해 발명된 것으로, 폴더형 단말기의 케이스 전면에 유전체를 프린트하고 접지방향을 따라 마이크로 스트립 안테나를 설치하므로써, 통화시 안테나를 통해 인체로 방사되는 전자파를 차단하므로 그에따라 통화시 유해 전자파로 인한 사용자의 안전을 확보하게 되는 마이크로 스트립 안테나를 케이스 전면에 부착한 폴더형 휴대폰을 제공함에 그 목적이 있다.Accordingly, the present invention is invented to solve the above problems, by printing a dielectric on the front of the case of the clamshell terminal and installing a microstrip antenna along the ground direction, the electromagnetic wave radiated to the human body through the antenna during the call It is an object of the present invention to provide a clamshell mobile phone with a microstrip antenna attached to the front of the case, thereby blocking the user according to harmful electromagnetic waves during the call.

본 발명의 또 다른 목적은 유해 전자파를 규제하는 각국의 안전규격에 부합되므로 그에따라 제품의 사용성도 상당히 증가시킬 수 있는 마이크로 스트립 안테나를 케이스 전면에 부착한 폴더형 휴대폰을 제공하는데 있다.Another object of the present invention is to provide a folding mobile phone with a microstrip antenna attached to the front of the case that can meet the safety standards of countries that regulate harmful electromagnetic waves, which can significantly increase the usability of the product accordingly.

상기와 같은 목적을 달성하기 위한 본 발명은 휴대폰 폴더 덮개에 그라운드 접지면을 설치하고, 이 그라운드 접지면의 상부로 일정수의 비유전율을 갖는 유전체층을 도포하며, 이 유전체층의 상부면으로 마이크로 스트립 안테나를 프린트하여 구성된 마이크로 스트립 안테나를 케이스 전면에 부착한 폴더형 휴대폰을 제공한다.The present invention for achieving the above object is to install a ground ground plane on the mobile phone folder cover, apply a dielectric layer having a certain number of dielectric constants on top of the ground ground plane, the microstrip antenna to the top surface of the dielectric layer It provides a clamshell cell phone with a printed microstrip antenna attached to the front of the case.

도 1은 종래 모노폴 안테나를 구비한 셀룰러폰을 설명하는 설명도.1 is an explanatory diagram illustrating a cellular phone having a conventional monopole antenna;

도 2(a)는 본 발명의 셀룰러폰의 평면을 설명하는 설명도.2 (a) is an explanatory diagram for explaining the plane of the cellular phone of the present invention.

(b)는 본 발명의 셀룰러폰의 측면을 설명하는 설명도.(b) is explanatory drawing explaining the aspect of the cellular phone of this invention.

도 3은 본 발명의 셀룰러폰의 내부회로를 설명하는 블록도.3 is a block diagram illustrating the internal circuit of the cellular phone of the present invention.

도 4는 본 발명의 셀룰러폰의 전자파 방사를 설명하는 설명도.4 is an explanatory diagram for explaining electromagnetic radiation of the cellular phone of the present invention.

<부호의 상세한 설명><Detailed Description of Codes>

1 : 힌지부 2 : 몸체부1 Hinge 2 Body

3 : 휴대폰 폴더 덮개 4 : 그라운드 접지면3: mobile phone folder cover 4: ground ground plane

5 : 유전체층 6 : 마이크로 스트립 안테나5: dielectric layer 6: microstrip antenna

7 : LCD 패널 8 : 기지국 시스템7: LCD panel 8: base station system

9 : RF단 10: 셀룰러폰9: RF stage 10: cellular phone

11: 제어부 12: 베이스드 밴드부11: control unit 12: based band portion

13: 데이터 신호 처리부 14: 송수화단13: data signal processor 14: handset

15: 인체 두부 16: 전자파15: human head 16: electromagnetic wave

이하, 본 발명을 첨부된 예시도면에 의거 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

본 발명 휴대폰의 안테나는 도 2에 도시된 바와같이 힌지부(1)를 중심으로 몸체부(2)에 접철되는 휴대폰 폴더 덮개(3)에 그라운드 접지면(4)을 설치하고, 이 그라운드 접지면(4)의 상부로 일정수 예컨대 10.2의 비유전율을 갖는 유전체층(5)을 도포하며, 이 유전체층(5)의 상부면으로 PCS 대역인 1.9 [MHz]에서 동작되는 마이크로 스트립 안테나(6)가 프린트되어 구성된다.In the antenna of the mobile phone of the present invention, as shown in FIG. 2, the ground ground plane 4 is provided on the cellular phone folder cover 3 which is folded to the body 2 around the hinge 1, and the ground ground plane is provided. On top of (4) is applied a dielectric layer 5 having a constant dielectric constant of, for example, 10.2, to which the microstrip antenna 6 operating at 1.9 [MHz] in the PCS band is printed on top of the dielectric layer 5. It is configured.

여기서, 상기 마이크로 스트립 안테나의 일실시예를 살펴보면, 폭(W)은 3.336[cm]이고, 길이(L)는 2.473[cm]로 유전체층(5)에 프린트되는데, 통상 다이폴 안테나의 빔(beam) 방사 패턴의 절반부분과 유사하게 방사된다.Here, referring to an embodiment of the microstrip antenna, the width W is 3.336 [cm] and the length L is printed on the dielectric layer 5 at 2.473 [cm], which is usually a beam of a dipole antenna. Similar to half of the radiation pattern is emitted.

그리고, 상기 휴대폰 폴더 덮개(3)의 그라운드 접지면상에는 LCD 패널(7)이 위치된다.Then, the LCD panel 7 is located on the ground ground plane of the cellular phone folder cover 3.

그리고, 상기와 같은 안테나를 갖는 셀룰러폰을 도 4을 참고로 하여 살펴보면, 상기 마이크로 스트립 안테나(6)를 경유하여 기지국 시스템(8)으로 송수신되는 통신신호를 RF신호로 변환하거나 분리하는 RF단(9)과, 이 RF단(9)을 포함하여 이 셀룰러폰(10)의 기능을 전반적으로 제어하는 제어부(11)와, 이 제어부(11)의 기능제어신호에 따라 입출력되는 통신신호를 변,복조하는 베이스드 밴드부(12)와, 이 베이스드 베드부(12)로부터 입력된 통신신호에 따라 해당 기능 예컨대, 음성신호 등을 신호처리하여 출력하는 데이터 신호처리부(13)와, 이 데이터 신호처리부()의 일단에 연결되어 사용자의 음성신호를 처리하는 송수화단(14)이 구비된다.In addition, referring to FIG. 4, a cellular phone having the antenna as described above, an RF stage for converting or separating a communication signal transmitted and received to the base station system 8 via the microstrip antenna 6 into an RF signal ( 9), the control unit 11 including the RF stage 9 to control the overall function of the cellular phone 10, and the communication signal input and output according to the function control signal of the control unit 11, A base signal band section 12 for demodulating, a data signal processor 13 for signal-processing and outputting a corresponding function such as a voice signal according to a communication signal input from the base bed section 12, and the data signal processor Connected to one end of () is provided a handset 14 for processing a user's voice signal.

다음에는 상기와 같은 구성으로된 본 발명의 작용,효과를 설명한다.Next, the operation and effects of the present invention having the above configuration will be described.

먼저, 셀룰러폰(10)의 사용자가 타 통신망과 통화를 하기를 원할 경우 접철된 셀룰러폰(10)을 힌지부(1)를 중심으로 편다음 키패널(도시안됨)을 통해 통화하고자 하는 통화 상대방의 전화번호를 LCD 패널(7)상에 표시되는 해당 전화번호 표시신호를 보면서 눌러주고 셀룰러폰(10)을 자신의 귀에 되게 된다. 그러면, 상기 셀룰러폰(10)의 제어부(11)가 이를 인식하여 상기 정보신호 즉, 다이얼링 신호를 데이터 신호 처리부(13)를 통해 데이터신호 처리한 다음 베이스드 밴드부(12)로 입력시킨다. 그리고, 이 베이스드 밴드부(12)에서 상기 정보신호를 변조하여 RF단(9)으로 전송하면 이 RF단(9)은 입력된 정보신호를 RF신호에 실어 휴대폰 폴더 덮개(3)상에 설치된 마이크로 스트립 안테나(6)를 통해 외부로 방출한다. 이때, 사용자는 셀룰러폰(10)을 자신에 귀에 대고 기지국 시스템(8)으로부터 송출되는 통화 연결음을 확인하게 된다.First, when a user of the cellular phone 10 wants to talk to another communication network, the folded cellular phone 10 is moved around the hinge unit 1, and then a call counterpart who wants to talk through the key panel (not shown). Press the phone number while watching the corresponding phone number display signal displayed on the LCD panel 7 and the cellular phone 10 will be in his ear. Then, the control unit 11 of the cellular phone 10 recognizes this and processes the data signal, that is, the dialing signal, through the data signal processing unit 13 and inputs the data signal to the base band unit 12. When the baseband band unit 12 modulates the information signal and transmits the information signal to the RF terminal 9, the RF terminal 9 carries the input information signal on the RF signal and installs the microcomputer on the cellular phone folder cover 3. It radiates to the outside through the strip antenna 6. At this time, the user puts the cellular phone 10 on his / her ear and checks the ring back tone transmitted from the base station system 8.

여기서, 상기 안테나(6)를 통해 송출되거나 혹은 수신되는 전파의 전자파는 본 발명의 안테나(6)가 일정방향으로만 전파가 방사되는 마이크로 스트립 안테나이므로 도 5에 도시된 바와같이 인체 두부(15)의 반대편으로만 방사되어 전자파(16)가 인체로 거의 흡수되지 않는다. 따라서, 사용자가 본 발명의 셀룰러폰(10)을 장시간 귀에 대고 사용하여도 안전하다.Here, since the electromagnetic wave of the radio wave transmitted or received through the antenna 6 is a microstrip antenna in which the antenna 6 of the present invention radiates radio waves only in a predetermined direction, the human head 15 as shown in FIG. 5. Radiated only to the opposite side of the electromagnetic wave 16 is hardly absorbed by the human body. Therefore, it is safe for the user to use the cellular phone 10 of the present invention with his or her ear for a long time.

뿐만아니라, 종래 셀룰러폰의 안테나인 모노폴 안테나가 몸체부에 돌출되게 설치되어 비용과 구조설계에 상당한 어려움을 겪고 있는데 반해, 본 발명의 마이크로 스트립 안테나(6)는 폴더 덮개(3)의 유전체층(5)에 간편히 프린트되는 것이므로 종래 셀룰러폰에 매우 우수한 구조를 갖는다.In addition, the monopole antenna, which is an antenna of a conventional cellular phone, is protruded to the body part and suffers considerable cost and structural design, whereas the microstrip antenna 6 of the present invention has a dielectric layer 5 of the folder cover 3. Since it is simply printed on) has a very excellent structure in the conventional cellular phone.

이상 설명에서와 같이 본 발명은 폴더형 단말기의 케이스 전면에 유전체를 프린트하고 접지방향을 따라 마이크로 스트립 안테나를 설치하므로써, 통화시 안테나를 통해 인체로 방사되는 전자파를 차단하므로 그에따라 통화시 유해 전자파로 인한 사용자의 안전을 확보하게된다. 또한, 본 발명은 유해 전자파를 규제하는 각국의 안전규격에 부합되므로 그에따라 제품의 사용성도 상당히 증가시킬 수 있는 효과가 있다.As described above, the present invention prints a dielectric on the front of a case of a clamshell terminal and installs a microstrip antenna along the ground direction, thereby blocking electromagnetic waves radiated to the human body through the antenna during communication. To ensure the safety of the user caused. In addition, the present invention is in compliance with the safety standards of the countries regulating harmful electromagnetic waves, there is an effect that can significantly increase the usability of the product accordingly.

Claims (3)

안테나가 구비된 폴더형 셀룰러폰에 있어서,In the foldable cellular phone with an antenna, 상기 안테나가 휴대폰 폴더 덮개에 그라운드 접지면을 설치하고, 이 그라운드 접지면의 상부로 일정수의 비유전율을 갖는 유전체층을 도포하며, 이 유전체층의 상부면으로 마이크로 스트립 안테나가 프린트되어 구성되는 것을 특징으로 하는 마이크로 스트립 안테나를 케이스 전면에 부착한 폴더형 휴대폰.The antenna is provided with a ground ground plane on the mobile phone folder cover, and coated with a dielectric layer having a certain number of dielectric constants on top of the ground ground plane, and the microstrip antenna is printed on the upper surface of the dielectric layer. A clamshell phone with a microstrip antenna attached to the front of the case. 제1항에 있어서, 상기 유전체층의 비유전율이 10.2인 것을 특징으로 하는 마이크로 스트립 안테나를 케이스 전면에 부착한 폴더형 휴대폰.The clamshell cellular phone with a microstrip antenna attached to the front of the case of claim 1, wherein the dielectric constant of the dielectric layer is 10.2. 제2항에 있어서, 상기 마이크로 스트립 안테나가 PCS 대역에서 동작되는 것을 특징으로 하는 마이크로 스트립 안테나를 케이스 전면에 부착한 폴더형 휴대폰.The cellular phone according to claim 2, wherein the microstrip antenna is operated in the PCS band.
KR1020000010308A 2000-03-02 2000-03-02 Folder type cellularphone attached a micro-strip antenna at the front of its case KR20010086654A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020019771A (en) * 2000-09-07 2002-03-13 이형도 Strip antenna of flip-outside in portable communication terminal
US7912520B2 (en) 2006-07-19 2011-03-22 Lg Electronics Inc. Mobile phone
US8024016B2 (en) 2006-07-18 2011-09-20 Lg Electronics Inc. Portable electronic device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020019771A (en) * 2000-09-07 2002-03-13 이형도 Strip antenna of flip-outside in portable communication terminal
US8024016B2 (en) 2006-07-18 2011-09-20 Lg Electronics Inc. Portable electronic device
US7912520B2 (en) 2006-07-19 2011-03-22 Lg Electronics Inc. Mobile phone

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