KR100686052B1 - Apparatus for Radio Frequency Circuit in Mobile Terminal - Google Patents

Apparatus for Radio Frequency Circuit in Mobile Terminal Download PDF

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KR100686052B1
KR100686052B1 KR1020050024165A KR20050024165A KR100686052B1 KR 100686052 B1 KR100686052 B1 KR 100686052B1 KR 1020050024165 A KR1020050024165 A KR 1020050024165A KR 20050024165 A KR20050024165 A KR 20050024165A KR 100686052 B1 KR100686052 B1 KR 100686052B1
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band
antenna
signal
wcdma
matching unit
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KR1020050024165A
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KR20060102201A (en
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남수현
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엘지전자 주식회사
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/43—Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
    • E04C3/16—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with apertured web, e.g. trusses
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B2001/2644—Brackets, gussets or joining plates

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  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Transceivers (AREA)

Abstract

본 발명은, 신호를 송수신하는 안테나와; 상기 안테나와 연결되어, GSM 대역과 DCS 대역과 PCS 대역과 WCDMA 대역을 정합하는 제 1 안테나 매칭부와; 상기 제 1 안테나 매칭부로부터 정합된 신호를 입력받아, 상기 신호에 각각 대응하는 송수신 경로로 출력하는 RF 스위치와; 상기 제 1 안테나 매칭부와 상기 RF 스위치사이에 연결되어, 상기 GSM 대역, DCS 대역, 및 PCS 대역의 특성을 검사하기 위한 제 1 검사 컨넥터와; 상기 RF 스위치로부터 상기 WCDMA 대역의 신호를 입력받아 재 정합하는 제 2 안테나 매칭부와; 상기 제 2 안테나 매칭부로부터 재 정합된 WCDMA 대역의 신호를 입력받는 듀플렉서와; 상기 제 2 안테나 매칭부와 상기 듀플렉서사이에 연결되어, 상기 WCDMA 대역의 특성을 검사하기 위한 제 2 검사 컨넥터를 포함하여 이루어지는 이동통신 단말기에서의 알에프 회로에 관한 것으로, WCDMA 대역 신호를 재 정합함으로써, 광대역 특성으로 인해 성능이 악화되는 안테나의 특성을 개선하는 효과가 있다.The present invention, the antenna for transmitting and receiving a signal; A first antenna matching unit connected to the antenna and matching a GSM band, a DCS band, a PCS band, and a WCDMA band; An RF switch receiving a matched signal from the first antenna matching unit and outputting the signal to a transmission / reception path corresponding to the signal; A first test connector connected between the first antenna matching unit and the RF switch to test characteristics of the GSM band, the DCS band, and the PCS band; A second antenna matching unit for receiving and re-matching the signal of the WCDMA band from the RF switch; A duplexer receiving a signal of the WCDMA band re-matched from the second antenna matching unit; An RF circuit in a mobile communication terminal connected between the second antenna matching unit and the duplexer and including a second test connector for checking a characteristic of the WCDMA band, the re-matching of the WCDMA band signal, There is an effect of improving the characteristics of the antenna deteriorated due to the broadband characteristics.

3세대 이동통신 단말기, 안테나 매칭회로, RF 회로 3rd generation mobile communication terminal, antenna matching circuit, RF circuit

Description

이동통신 단말기에서의 알에프 회로{Apparatus for Radio Frequency Circuit in Mobile Terminal}RF circuit in mobile communication terminal {Apparatus for Radio Frequency Circuit in Mobile Terminal}

도 1은 종래 3G 다중밴드 이동통신 단말기의 안테나의 반사계수를 나타낸 설명도이다.1 is an explanatory diagram showing a reflection coefficient of an antenna of a conventional 3G multi-band mobile communication terminal.

도 2는 본 발명에 따른 3G 다중대역 이동통신 단말기에서의 RF 회로를 나타낸 일 실시예 구성도이다.2 is a diagram illustrating an embodiment of an RF circuit in a 3G multi-band mobile communication terminal according to the present invention.

<도면의 주요 부분에 대한 부호 설명><Description of the symbols for the main parts of the drawings>

210 : 안테나 220 : 제 1 안테나 매칭부210: antenna 220: first antenna matching unit

230 : 제 1 검사 컨넥터 240 : RF 스위치230: first inspection connector 240: RF switch

250 : 제 2 안테나 매칭부 260 : 제 2 검사 컨넥터250: second antenna matching unit 260: second inspection connector

270 : WCDMA 듀플렉서270: WCDMA Duplexer

본 발명은 이동통신 단말기에서의 알에프 회로에 관한 것으로, 보다 상세하게는 광대역 특성으로 성능이 악화되는 안테나의 특성을 개선하기 위한 3세대 다중밴드 이동통신 단말기에서의 알에프 회로에 관한 것이다.The present invention relates to an RF circuit in a mobile communication terminal, and more particularly, to an RF circuit in a third generation multi-band mobile communication terminal for improving the characteristics of an antenna whose performance is deteriorated due to broadband characteristics.

현재, 3G(Generation) 다중밴드(Multiband) 이동통신 단말기의 경우 GMS(Global System for Mobile communication; 이하 'GSM') 900MHz 대역, DCS(Digital Cellular System; 이하 'DCS') 1800MHz 대역, PCS(Personal Communication Service; 이하 'PCS') 1900MHz 대역, WCDMA(Wideband Code Division Multiple Access; 이하 'WCDMA') TX 1900MHz, 및 WCDMA RX 2100MHz 대역을 하나의 단말기에 구현되어 있다. 상기 3G 다중밴드 이동통신 단말기의 안테나 구현시, 상기 GSM 900MHz 대역의 저 대역(Low Band)은 주공진을 이용하여 구현하고, 상기 DCS 1800MHz 대역, PCS 1900MHz 대역, 및 WCDMA 2100MHz 대역등의 고 대역(High Band)은 2차 공진을 조정하여 구현한다.Currently, 3G (Generation) Multiband mobile communication terminals have a Global System for Mobile communication (GMS) 900MHz band, DCS (DCS) 1800MHz band, PCS (Personal Communication). Service (PCS) 1900MHz band, Wideband Code Division Multiple Access (WCDMA) TX 1900MHz, and WCDMA RX 2100MHz band are implemented in one terminal. When the antenna of the 3G multi-band mobile communication terminal is implemented, a low band of the GSM 900 MHz band is implemented using a main resonance, and a high band such as the DCS 1800 MHz band, the PCS 1900 MHz band, and the WCDMA 2100 MHz band ( High Band) is implemented by adjusting the secondary resonance.

도 1은 종래 3G 다중밴드 이동통신 단말기의 안테나의 반사계수를 나타낸 설명도이다.1 is an explanatory diagram showing a reflection coefficient of an antenna of a conventional 3G multi-band mobile communication terminal.

도 1에 도시된 바와 같이, 900MHz 대역에 첫번째 공진이 발생되고, 두번째 1.8GHz 대역에 하모닉(Hanmonic)에 의한 공진으로 대역을 넓혀 일부 손실을 가지고, 대역 특성을 만족시킨다.As shown in FIG. 1, a first resonance occurs in a 900 MHz band, and a band is widened by resonance by a harmonic in a second 1.8 GHz band to have some loss and satisfy band characteristics.

그러나, 상기와 같은 2번째 공진의 특성을 열화시켜 대역을 넓히는 경우, 반사계수(Voltage Standing Wave Ratio; VSWR) 특성에선 반사를 없애는 것처럼 보일 수 있으나, 어느 이상의 대역 확장은 지나친 손실을 야기하여, 안테나로 방사되어야 하는 전파가 손실되어 버리는 문제점이 있었다.However, in the case of widening the band by deteriorating the characteristics of the second resonance as described above, it may appear that the reflection is eliminated in the characteristics of the voltage standing wave ratio (VSWR). There was a problem that radio waves to be radiated are lost.

본 발명의 목적은, WCDMA 대역 신호가 입력되는 WCDMA 듀플렉서의 앞단에 안 테나 매칭 회로를 구현하고, 상기 WCDMA 대역 신호를 재 정합함으로써, 광대역 특성으로 인해 성능이 악화되는 안테나의 특성을 개선하기 위한 3세대 다중대역 이동통신 단말기에서의 알에프 회로를 제공하는데 그 목적이 있다.An object of the present invention is to implement an antenna matching circuit in front of a WCDMA duplexer to which a WCDMA band signal is input, and to re-match the WCDMA band signal, thereby improving the characteristics of an antenna whose performance is degraded due to broadband characteristics. It is an object of the present invention to provide an RF circuit in a generation multi-band mobile communication terminal.

상기의 목적을 달성하기 위한 본 발명에 따른 이동통신 단말에서의 알에프 회로는, 신호를 송수신하는 안테나와; 상기 안테나와 연결되어, GSM 대역과 DCS 대역과 PCS 대역과 WCDMA 대역을 정합하는 제 1 안테나 매칭부와; 상기 제 1 안테나 매칭부로부터 정합된 신호를 입력받아, 상기 신호에 각각 대응하는 송수신 경로로 출력하는 RF 스위치와; 상기 제 1 안테나 매칭부와 상기 RF 스위치사이에 연결되어, 상기 GSM 대역, DCS 대역, 및 PCS 대역의 특성을 검사하기 위한 제 1 검사 컨넥터와; 상기 RF 스위치로부터 상기 WCDMA 대역의 신호를 입력받아 재 정합하는 제 2 안테나 매칭부와; 상기 제 2 안테나 매칭부로부터 재 정합된 WCDMA 대역의 신호를 입력받는 듀플렉서와; 상기 제 2 안테나 매칭부와 상기 듀플렉서사이에 연결되어, 상기 WCDMA 대역의 특성을 검사하기 위한 제 2 검사 컨넥터를 포함하여 이루어진다.RF circuit in a mobile communication terminal according to the present invention for achieving the above object comprises an antenna for transmitting and receiving a signal; A first antenna matching unit connected to the antenna and matching a GSM band, a DCS band, a PCS band, and a WCDMA band; An RF switch receiving a matched signal from the first antenna matching unit and outputting the signal to a transmission / reception path corresponding to the signal; A first test connector connected between the first antenna matching unit and the RF switch to test characteristics of the GSM band, the DCS band, and the PCS band; A second antenna matching unit for receiving and re-matching the signal of the WCDMA band from the RF switch; A duplexer receiving a signal of the WCDMA band re-matched from the second antenna matching unit; And a second test connector connected between the second antenna matcher and the duplexer to test the characteristics of the WCDMA band.

상술한 목적, 특징들 및 장점은 첨부된 도면과 관련한 다음의 상세한 설명을 통하여 보다 분명해질 것이다. 이하 첨부된 도면을 참조하여 본 발명에 따른 바람직한 일실시예를 상세히 설명한다.The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 따른 3G 다중대역 이동통신 단말기에서의 RF 회로를 나타낸 일 실시예 구성도이다.2 is a diagram illustrating an embodiment of an RF circuit in a 3G multi-band mobile communication terminal according to the present invention.

도 2를 참조하면, 안테나(ANT)(210)는, GSM900, DCS1800, PCS1900, WCDMA TX1900, WCDMA RX2100 등의 신호를 송수신한다.Referring to FIG. 2, the antenna ANT 210 transmits and receives signals such as GSM900, DCS1800, PCS1900, WCDMA TX1900, and WCDMA RX2100.

제 1 안테나 매칭부(220)는, 안테나(210)와 연결되어, 상기 GSM900, DCS1800, PCS1900등의 저대역 송수신 신호 및 WCDMA TX1900, WCDMA RX2100등의 고대역 송수신 신호를 50Ω(Ohm)의 협대역으로 정합하여 RF 스위치(240)로 출력한다.The first antenna matching unit 220 is connected to the antenna 210, narrow band of 50 Ω (Ohm) for low-band transmit and receive signals such as GSM900, DCS1800, PCS1900 and high-band transmit and receive signals such as WCDMA TX1900, WCDMA RX2100 Matched to and outputs to the RF switch 240.

제 1 검사 컨넥터(230)는, 제 1 안테나 매칭부(220)와 RF 스위치(240)사이에 연결되며, 상기 저대역인 GSM900, DCS1800, 및 PCS1900 대역의 특성을 검사하기 위한 테스트 포인트이다.The first test connector 230 is connected between the first antenna matching unit 220 and the RF switch 240 and is a test point for checking the characteristics of the low-band GSM900, DCS1800, and PCS1900 bands.

RF 스위치(240)는, 제 1 안테나 매칭부(220)로부터 GSM900, DCS1800, PCS1900, WCDMA TX1900, WCDMA RX2100 등의 신호를 입력받아, 상기 GSM900, DCS1800, PCS1900, WCDMA TX1900, WCDMA RX2100 등의 신호를 상기 각각의 신호에 대응되는 송수신 경로로 출력한다.The RF switch 240 receives signals such as GSM900, DCS1800, PCS1900, WCDMA TX1900, and WCDMA RX2100 from the first antenna matching unit 220, and receives signals such as GSM900, DCS1800, PCS1900, WCDMA TX1900, and WCDMA RX2100. Outputs the transmission and reception paths corresponding to the respective signals.

제 2 안테나 매칭부(250)는, RF 스위치(240)와 WCDMA 듀플렉서(270)사이에 연결되며, 상기 RF 스위치(240)로부터 WCDMA 대역 송수신 신호를 입력받아, 50Ω의 협대역으로 재 정합한다.The second antenna matching unit 250 is connected between the RF switch 240 and the WCDMA duplexer 270, receives the WCDMA band transmission and reception signal from the RF switch 240, and re-matches to a narrow band of 50Ω.

제 2 검사 컨넥터(260)는, 제 2 안테나 매칭부(250)와 WCDMA 듀플렉서(270)사이에 연결되며, 상기 고대역인 WCDMA 대역의 특성을 검사하기 위한 테스트 포인트이다.The second test connector 260 is connected between the second antenna matching unit 250 and the WCDMA duplexer 270 and is a test point for checking the characteristics of the high band WCDMA band.

WCDMA 듀플렉서(270)는, 상기 제 2 안테나 매칭부(250)로부터 재 정합된 WCDMA 대역 신호를 입력받거나, 상기 제 2 안테나 매칭부(250)로 WCDMA 대역 신호를 입력한다. The WCDMA duplexer 270 receives the re-matched WCDMA band signal from the second antenna matching unit 250 or inputs the WCDMA band signal to the second antenna matching unit 250.

이상에서 설명한 본 발명은, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 있어 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능하므로 전술한 실시예 및 첨부된 도면에 의해 한정되는 것이 아니다.The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

본 발명에 따른 3G 다중대역 이동통신 단말기에서의 알에프 회로는, WCDMA 대역 신호를 재 정합함으로써, 광대역 특성으로 인해 성능이 악화되는 안테나의 특성을 개선하는 효과가 있다.The RF circuit in the 3G multi-band mobile communication terminal according to the present invention has an effect of improving the characteristics of the antenna whose performance is deteriorated due to the wideband characteristics by re-matching the WCDMA band signals.

Claims (6)

신호를 송수신하는 안테나;An antenna for transmitting and receiving a signal; 상기 안테나와 연결되어, GSM 대역과 DCS 대역과 PCS 대역과 WCDMA 대역을 정합하는 제 1 안테나 매칭부;A first antenna matching unit connected to the antenna and matching a GSM band, a DCS band, a PCS band, and a WCDMA band; 상기 제 1 안테나 매칭부로부터 정합된 신호를 입력받아, 상기 신호에 각각 대응하는 송수신 경로로 출력하는 RF 스위치;An RF switch receiving a matched signal from the first antenna matching unit and outputting the signal to a transmission / reception path corresponding to the signal; 상기 제 1 안테나 매칭부와 상기 RF 스위치사이에 연결되어, 상기 GSM 대역, DCS 대역, 및 PCS 대역의 특성을 검사하기 위한 제 1 검사 컨넥터;A first test connector connected between the first antenna matcher and the RF switch to test the characteristics of the GSM band, the DCS band, and the PCS band; 상기 RF 스위치로부터 상기 WCDMA 대역의 신호를 입력받아 재 정합하는 제 2 안테나 매칭부;A second antenna matching unit which receives the signal of the WCDMA band from the RF switch and re-matches the signal; 상기 제 2 안테나 매칭부로부터 재 정합된 WCDMA 대역의 신호를 입력받는 듀플렉서; 및A duplexer receiving a signal of the WCDMA band re-matched from the second antenna matching unit; And 상기 제 2 안테나 매칭부와 상기 듀플렉서사이에 연결되어, 상기 WCDMA 대역의 특성을 검사하기 위한 제 2 검사 컨넥터를 포함하여 이루어지는 이동통신 단말기에서의 알에프 회로.And a second test connector connected between the second antenna matching unit and the duplexer to test the characteristics of the WCDMA band. 삭제delete 삭제delete 삭제delete 삭제delete 제 1항에 있어서,The method of claim 1, 상기 이동통신 단말기는, 3세대 다중대역 이동통신 단말기인 것을 특징으로 하는 이동통신 단말기에서의 알에프 회로.And said mobile communication terminal is a third generation multi-band mobile communication terminal.
KR1020050024165A 2005-03-23 2005-03-23 Apparatus for Radio Frequency Circuit in Mobile Terminal KR100686052B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020052779A (en) * 2000-12-26 2002-07-04 송문섭 Matching circuit of Tri-mode between antenna and duplexer of mobile station
KR20040061735A (en) * 2002-12-31 2004-07-07 주식회사 팬택앤큐리텔 Antenna device for using as exterior type and interior type
JP2004297455A (en) 2003-03-27 2004-10-21 Kyocera Corp High frequency module
KR20040092127A (en) * 2003-04-25 2004-11-03 주식회사 팬택 Handset for Matching Multi-Mode by Using Multi-Matching Circuit
US6816711B2 (en) 2001-11-27 2004-11-09 Qualcomm Incorporated GPS equipped mobile phone with single shared antenna

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020052779A (en) * 2000-12-26 2002-07-04 송문섭 Matching circuit of Tri-mode between antenna and duplexer of mobile station
US6816711B2 (en) 2001-11-27 2004-11-09 Qualcomm Incorporated GPS equipped mobile phone with single shared antenna
KR20040061735A (en) * 2002-12-31 2004-07-07 주식회사 팬택앤큐리텔 Antenna device for using as exterior type and interior type
JP2004297455A (en) 2003-03-27 2004-10-21 Kyocera Corp High frequency module
KR20040092127A (en) * 2003-04-25 2004-11-03 주식회사 팬택 Handset for Matching Multi-Mode by Using Multi-Matching Circuit

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