KR100648126B1 - Mobile communication terminal using dual polarization diversity receiving system - Google Patents

Mobile communication terminal using dual polarization diversity receiving system Download PDF

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KR100648126B1
KR100648126B1 KR1019990017584A KR19990017584A KR100648126B1 KR 100648126 B1 KR100648126 B1 KR 100648126B1 KR 1019990017584 A KR1019990017584 A KR 1019990017584A KR 19990017584 A KR19990017584 A KR 19990017584A KR 100648126 B1 KR100648126 B1 KR 100648126B1
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terminal
signal
diversity
antenna
signal received
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KR1019990017584A
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Korean (ko)
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KR20000073963A (en
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홍석준
이문규
허철
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유티스타콤코리아 유한회사
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/10—Polarisation diversity; Directional diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

본 발명은 듀얼 편파 다이버서티 단말기를 구현하여 단말기의 수신 감도를 향상시키고, 기지국 파우어 용량을 감소시킬 수 있도록 한 듀얼 편파 다이버서티 수신 방식을 사용한 이동통신 단말기에 관한 것이다.The present invention relates to a mobile communication terminal using a dual polarized wave diversity reception method by implementing a dual polarized wave diversity terminal to improve the reception sensitivity of the terminal and to reduce the base station power capacity.

본 발명은 단말기(2)의 외부에 착탈가능하게 장착된 메인 안테나(1)이외에 단말기(2)내부에 이 메인 안테나(1)와 직교되게 다이버서티용 안테나(3)를 내장하고, 메인 안테나(1) 및 다이버서티용 안테나(3)를 통하여 수신되는 신호를 RF다운 콘버터(4)(5)를 통하여 소정레벨 다운시킨후 신호보상부(6)를 통하여 상기 RF회로 다운 콘버터(4)(5)중 한쪽에서 받은 신호의 에러를 다른 쪽에서 받은 신호로 보상하여줌으로써 수신자는 수신감도가 향상된 양호한 신호를 수신할 수 있게 되는 것이다.The present invention incorporates a diversity antenna (3) in the terminal (2) orthogonal to the main antenna (1) in addition to the main antenna (1) detachably mounted to the outside of the terminal (2), 1) and down the signal received through the diversity antenna 3 through the RF down converter (4) (5) by a predetermined level and then through the signal compensation section (6) the RF circuit down converter (4) (5). By compensating for the error of the signal received from one side to the signal received from the other side, the receiver can receive a good signal with improved reception sensitivity.

Description

듀얼 편파 다이버서티 수신 방식을 사용한 이동통신 단말기 {Mobile communication terminal using dual polarization diversity receiving system} Mobile communication terminal using dual polarization diversity receiving method

도 1은 본 발명의 다이버서티 안테나를 단말기에 장착한 상태도1 is a state diagram equipped with a diversity antenna of the present invention to a terminal

도 2는 본 발명의 신호 수신 경로를 설명하기 위한 도면2 is a view for explaining a signal reception path of the present invention;

〈도면의 주요 부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

1:메인 안테나 2:단말기1: Main antenna 2: Terminal

3:다이버서티 안테나 4,5:RF회로 다운 콘버터3: diversity antenna 4, 5: RF circuit down converter

6:신호보상부6: signal compensator

본 발명은 CDMA,TDMA,TRS 등의 이동통신 시스템의 단말기에 관한 것으로, 특히 듀얼 편파 다이버서티 단말기를 구현하여 단말기의 수신 감도를 향상시키고, 기지국 파우어 용량을 줄일 수 있도록 한 듀얼 편파 다이버서티 수신 방식을 사용한 이동통신 단말기에 관한 것이다.The present invention relates to a terminal of a mobile communication system such as CDMA, TDMA, TRS, and the like. In particular, a dual polarized diversity reception method for implementing a dual polarized diversity terminal to improve the reception sensitivity of the terminal and to reduce the base station power capacity. It relates to a mobile communication terminal using.

종래의 이동통신 단말기는 하나의 안테나를 사용하므로 수신 경로상에서 발생하는 페이딩등 통신에 불안정한 요소에 의해 영향을 받을 경우에도 수신된 에러 신호를 보상할 수 있는 방법이 없었다.Since the conventional mobile communication terminal uses one antenna, there is no method to compensate for the received error signal even when it is affected by unstable factors such as fading occurring in the reception path.

즉, 종래의 이동통신 단말기는 다이버서티가 마련되어 있지 않아 수신 감도가 떨어지고 기지국 파우어를 줄일 수 없는 결점이 있었다.That is, the conventional mobile communication terminal has a drawback in that the reception sensitivity is low because the diversity is not provided and the base station power cannot be reduced.

본 발명은 이와같은 종래의 문제점을 해결하기 위하여 안출한 것으로, 본 발명의 목적은, 메인 안테나와 서로 직교하는 편파 특성을 갖는 다이버서티 안테나를 단말기 내부에 장착하여 상관관계가 낮고 절연이 양호한 다이버서티 이득을 얻을 수 있도록 하여 단말기 수신 감도를 향상시키고, 기지국 파우어 용량을 줄여 같은 파우어를 사용할 경우 기지국의 사용자 수를 늘릴 수 있도록 하는 듀얼 편파 다이버서티 수신 방식을 사용한 이동통신 단말기를 제공하는데 그 목적이 있다.The present invention has been made to solve such a conventional problem, an object of the present invention is to install a diversity antenna having a polarization characteristic orthogonal to the main antenna inside the terminal to have a low correlation and good insulation The purpose of the present invention is to provide a mobile communication terminal using a dual polarization diversity reception method which can increase the reception sensitivity by gaining the gain and reduce the base station power capacity to increase the number of users of the base station when the same power is used. .

이와같은 목적을 달성하기 위한 본 발명은 메인 안테나를 갖는 단말기의 내부에 다이버서티 안테나를 직교되게 장착하여 메인 안테나와 다이버서티 안테나를 통하여 수신되는 신호중 감도가 좋지 않은 신호가 있을 경우 다른 신호로 이를 보상하여 수신자가 신호보상된 깨끗한 신호를 수신할 수 있도록 구성함을 특징으로 한다.The present invention for achieving the above object is orthogonal mounting of the diversity antenna inside the terminal having the main antenna, if there is a signal of poor sensitivity among the signals received through the main antenna and the diversity antenna to compensate for the other signal It is characterized in that the receiver is configured to receive a clean signal compensated signal.

이하, 본 발명의 실시예를 첨부된 도면을 참고로 하여 상세히 설명하면 다음과 같다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 구성도로, 단말기(2)의 외부에 착탈가능하게 장착된 메인 안테나(1)와, 상기 단말기(2)내부에 메인 안테나(1)와 직교되게 내장되는 다이버서 티용 안테나(3)를 포함하여 구성된 것이다.1 is a configuration diagram of the present invention, a main antenna (1) detachably mounted to the outside of the terminal (2), and a diversity antenna (2) embedded in the terminal (2) orthogonal to the main antenna (1) 3) including.

도 2는 본 발명의 신호 보상관계를 설명하기 위한 도면으로, 메인 안테나(1)를 통하여 수신되는 신호를 소정레벨 다운시키는 RF회로 다운 콘버터(4)와, 다이버서티용 안테나(3)를 통하여 수신되는 신호를 소정레벨 다운시키는 RF회로 다운 콘버터(5)와, 상기 RF회로 다운 콘버터(4)(5)중 한쪽에서 받은 신호의 에러를 다른 쪽에서 받은 신호로 보상해 주기 위한 베이스 밴드로 된 신호 보상부(6)를 포함하여 구성된 것이다.2 is a view for explaining the signal compensation relationship of the present invention, which is received through the RF circuit down converter 4 and the diversity antenna 3 for downsing a signal received through the main antenna 1 by a predetermined level. Signal compensation with baseband for compensating for the error of the signal received from one of the RF circuit down-converter 5 and the signal received from the other of the RF circuit down-converter 5 to down the predetermined signal. It is comprised including the part 6.

이와같이 구성된 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention configured as described above is as follows.

본 발명은 단말기(2)에 장착되는 메인 안테나(1)와 직교되게 단말기(2)의 내부에 다이버서티용 안테나(3)를 장착하며, 이 다이버서티용 안테나(3)는 메인 안테나(1)와 서로 직교하는 편파특성을 갖고 있어 상관관계가 낮고, 절연이 양호하여 높은 다이버서티 이득을 얻을 수 있다.According to the present invention, the diversity antenna 3 is mounted inside the terminal 2 so as to be orthogonal to the main antenna 1 mounted on the terminal 2, and the diversity antenna 3 includes the main antenna 1. Has a polarization characteristic which is orthogonal to each other, and has low correlation and good insulation, so that high diversity gain can be obtained.

따라서, 기지국에서 단말기(2)로 신호를 보내면 단말기(2)의 메인 안테나(1)와 다이버서티용 안테나(3)에서 신호를 수신하게 되는데, 이때 단말기(2)의 RF회로는 2개의 경로를 갖는다.Therefore, when the base station sends a signal to the terminal 2, the signal is received by the main antenna 1 and the diversity antenna 3 of the terminal 2, where the RF circuit of the terminal 2 Have

예를들어, 메인 안테나(1)측의 RF다운 콘버터(4)쪽을 RX 0경로라고 하고,다이버서티용 안테나(3)측의 RF다운 콘버터(5)쪽을 RX 1경로라고 할 수 있다.For example, the RF down converter 4 side of the main antenna 1 side may be referred to as the RX 0 path, and the RF down converter 5 side of the diversity antenna 3 side may be referred to as the RX 1 path.

이와같이 수신신호는 2개의 경로를 통하여 RF다운 콘버터(4)(5)에서 각각 신호변환된 후 디지털쪽의 베이스 밴드로 구성된 신호 보상부(6)를 통하여 신호가 보상된다.In this way, the received signal is signal-converted in the RF down converters 4 and 5 through two paths, and then the signal is compensated through the signal compensator 6 composed of the digital base band.

이때, 메인 안테나(1) 및 다이버서티용 안테나(3)의 신호중 어느 하나의 신호가 불량하게 수신될 경우 이러한 불량한 신호와 양질의 신호가 신호 보상부(6)를 통하여 보상되어 수신자측으로는 신호감도가 양호한 신호가 수신되는 것이다.At this time, if any one of the signals of the main antenna 1 and the diversity antenna 3 is poorly received, these poor signals and good signals are compensated by the signal compensator 6, and the signal sensitivity is reduced to the receiver side. Is a good signal to be received.

즉, 신호 보상부(6)를 통하여 수신신호를 보상하게 되면 약 3dB정도 수신 감도가 좋아진 것을 알 수 있다.That is, when the received signal is compensated through the signal compensator 6, it can be seen that the reception sensitivity is improved by about 3 dB.

이상에서 설명한 바와같은 본 발명은 기존의 메인 안테나이외에 단말기 본체내부에 다이버서티용 안테나를 추가로 구비하여 듀얼 편파 다이버서티로 단말기를 구현함으로써 단말기 수신 감도가 향상됨은 물론 기지국 파우어 용량을 줄일 수 있어 같은 파우어를 사용할 경우 기지국의 사용자 수를 늘릴 수 있는 효과가 있다.









As described above, the present invention provides a terminal with dual polarization diversity by additionally providing a diversity antenna inside the main body of the terminal in addition to the existing main antenna, thereby improving terminal reception sensitivity and reducing base station power capacity. When using the power, it is possible to increase the number of users of the base station.









Claims (1)

단말기의 외부에 착탈 가능하게 장착된 메인 안테나와,A main antenna detachably mounted to the outside of the terminal, 상기 메인 안테나와 직교되게 단말기에 내장되는 다이버서티용 안테나와,A diversity antenna built in the terminal orthogonal to the main antenna; 상기 메인 안테나를 통하여 수신되는 신호를 주파수 레벨 다운시키는 RF회로 다운 콘버터와,An RF circuit down converter for frequency leveling down the signal received through the main antenna; 상기 다이버서티용 안테나를 통하여 수신되는 신호를 주파수 레벨 다운시키는 RF회로 다운 콘버터와,An RF circuit down converter for frequency leveling down the signal received through the diversity antenna; 상기 복수의 RF회로 다운 콘버터 중 한쪽에서 받은 신호의 베이스밴드 에러를 다른 쪽에서 받은 신호로 보상해 주어 수신감도를 증가시키기 위한 신호 보상부를 포함하여 구성된 것을 특징으로 하는 듀얼 편파 다이버서티 수신 방식을 사용한 이동통신 단말기.Moving using a dual polarized diversity reception method comprising a signal compensation unit for compensating the baseband error of the signal received from one of the plurality of RF circuit down converter with the signal received from the other to increase the reception sensitivity Communication terminal.
KR1019990017584A 1999-05-17 1999-05-17 Mobile communication terminal using dual polarization diversity receiving system KR100648126B1 (en)

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KR970031455A (en) * 1995-11-29 1997-06-26 조나단 피. 메이어 Dual Mode Radio Subscriber Unit Having a Diversity Receiver Apparatus and Method Therefor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970031455A (en) * 1995-11-29 1997-06-26 조나단 피. 메이어 Dual Mode Radio Subscriber Unit Having a Diversity Receiver Apparatus and Method Therefor

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