WO2008069357A1 - Amplificateur à faible bruit pour une station de base mobile - Google Patents

Amplificateur à faible bruit pour une station de base mobile Download PDF

Info

Publication number
WO2008069357A1
WO2008069357A1 PCT/KR2006/005357 KR2006005357W WO2008069357A1 WO 2008069357 A1 WO2008069357 A1 WO 2008069357A1 KR 2006005357 W KR2006005357 W KR 2006005357W WO 2008069357 A1 WO2008069357 A1 WO 2008069357A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
low noise
amplifier
noise amplifier
repeater
Prior art date
Application number
PCT/KR2006/005357
Other languages
English (en)
Inventor
Duk-Yong Kim
Won-Kil Park
Chang-Woo You
Sung-Ho Jang
Original Assignee
Kmw Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kmw Inc. filed Critical Kmw Inc.
Priority to PCT/KR2006/005357 priority Critical patent/WO2008069357A1/fr
Publication of WO2008069357A1 publication Critical patent/WO2008069357A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations

Definitions

  • the present invention relates to a receiving system of a base station which receives signals of mobile communications such as analog cellular, digital cellular, Code Division Multiple Access (CDMA) cellular, Personal Communication Services (PCS), trunked radio, full-duplex paging, etc., and more particularly to a low noise amplifier for improving receive sensitivity by installing the receiving system near an antenna in order to reduce the total noise figure.
  • signals of mobile communications such as analog cellular, digital cellular, Code Division Multiple Access (CDMA) cellular, Personal Communication Services (PCS), trunked radio, full-duplex paging, etc.
  • a transmission system of a base station in mobile communication services transfers a signal of great power by using a power amplifier which has great output power and accordingly, the signal can be received even by a handheld terminal of a mobile station located far away from the transmission system of a base station.
  • the difference of a communication distance between a downlink and an uplink in communication services requires many more base stations to be installed, and therefore increases the cost of installing and the cost of maintenance and repairs, wherein through a downlink a signal is forwarded from the base station to the mobile station and through an uplink a signal is transferred from the mobile station to the base station.
  • transmit-receive sensitivity of a transmission-receiving system of the base station especially, power of an output signal, etc.
  • the BPF, the LNA, a down converter, etc. have been located inside a house in the transmission-receiving system of the base station, whereas an antenna has been installed on the rooftop.
  • the insertion loss of the cable is several [dB], and accordingly, the loss of the cable is reflected in the noise figure of the overall transmission-receiving system.
  • the BPF, the LNA, a down converter, etc. are installed as near to the transmission-receiving antenna as possible, so that the noise figure due to the loss of the cable is reduced.
  • the present invention has been made in view of the above- mentioned problems, and it is an object of the present invention to provide a low noise amplifier of a mobile communication base station, which allows equipment installed near a transmission-receiving antenna outside the house to be easily maintained and repaired.
  • an amplifier housing with a built-in amplifier circuit device is inserted and equipped from one side of a repeater housing into the repeater housing in a longitudinal direction in a low noise amplifier of a mobile communication base station.
  • a low noise amplifier of a mobile communication base station has a main circuit including active elements for amplifying a received signal within a housing, and has a structure to insert and equip the main circuit including the active elements for amplifying the received signal into the housing in the longitudinal direction, and accordingly, it becomes easy to regularly check, maintain, and repair the low noise amplifier, even though the low noise amplifier is installed outside the house. Namely, a worker can easily carry out a regular check, maintenance, and repairs for the active elements of the low noise amplifier with such a simple task that the worker opens an opening of a repeater housing to replace the amplifier housing with another amplifier housing.
  • FIG. 1 is a perspective view illustrating a small-sized repeater of a mobile communication base station according to a preferred embodiment of the present invention
  • FIG. 2 is a perspective view illustrating an opened state of the opening of a repeater housing illustrated in FIG. 1 ;
  • FIG. 3 is a perspective view illustrating a structure in which an amplifier housing is inserted into the repeater housing illustrated in FIG. 2.
  • a low noise amplifier of a mobile communication base station including, a repeater housing; and at least one amplifier housing with a built-in low noise amplifier circuit device, which is inserted and equipped from one lateral face of the repeater housing into the repeater housing in a longitudinal direction, will be disclosed.
  • a low noise amplifier of mobile communication base station is equipped inside a small-sized repeater 100, and particularly, includes an amplifier housing 102 inserted and equipped into a repeater housing 101 in a longitudinal direction.
  • the small-sized repeater 100 has a built-in amplifier housing 102, within which a low noise amplifier for amplifying power of a received signal is equipped.
  • ANTenna (ANT) ports 112 for receiving the received signal from an antenna, an input of a signal to be amplified, BTS ports 111, which supplies power source to the low noise amplifier, coupler terminals 113, and ground terminals 115 are installed at one side, and desirably, one side of the lower end of the repeater housing 101.
  • the repeater housing 101 has a built-in amplifier housing 102.
  • the main circuit including the active elements for amplifying the received signal (e.g., the low noise amplifier, etc., are the core), is installed within the amplifier housing 102.
  • the amplifier housing 102 is manufactured in the shape extended in one direction, and is inserted and equipped into the repeater housing 101 in a longitudinal direction.
  • an opening 119 is formed at one side of the repeater housing 101.
  • the opening 119 is desirably formed at the lower end of the repeater housing 101. Because the opening 119 is formed at the lower end of the repeater housing 101, even though the small-sized repeater 100 is installed in a high place, workers can easily carry out the job for maintenance and repairs.
  • the opening 119 is opened or closed by a cover 103 hingedly coupled in the position adjacent to the opening 119. Namely, one end of the cover 103 is hingedly coupled on the outer circumferential surface of the repeater housing 101. In the case when the cover 103 opens the opening 119, the amplifier housing 102 moves along an inner guide rail through the opening 119, and is then inserted into the repeater housing 101, so that the amplifier housing 102 is equipped within the repeater housing 101.
  • the other end of the cover 103 is fixed with screws 133 on the outer circumferential surface of the repeater housing 101.
  • An elastic member such as sponge, rubber, etc., is adhered to the inner lateral face of the cover 103, and can apply pressure to an end part of the amplifier housing 102 which has been inserted and equipped through the opening 119. As the elastic member applies pressure to the end part of the amplifier housing 102, the amplifier housing 102 is equipped within the repeater housing 101, and is now able to maintain a stable assembly state.
  • the opening is formed at the lower end face of the repeater housing, but it will be understood that as environment in which a product or an amplifier housing is installed demands, the opening can be formed at the lateral face, the upper end face, etc., of the repeater housing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)

Abstract

L'invention concerne un amplificateur à faible bruit d'une station de base de communication mobile, comprenant un boîtier de répéteur et au moins un boîtier d'amplificateur muni d'un circuit amplificateur intégré à faible bruit. Le boîtier d'amplificateur est inséré et monté en sens longitudinal dans le boîtier du répéteur à partir d'une face latérale du boîtier de répéteur. L'amplificateur à faible bruit de la station de base de communication mobile selon l'invention présente un circuit principal qui comprend des éléments actifs servant à amplifier un signal reçu et qui a la forme d'un module, ainsi qu'une structure permettant l'insertion et le montage en sens longitudinal du circuit principal dans le boîtier. Il est ainsi aisé de vérifier, entretenir et réparer l'amplificateur à faible bruit régulièrement, même si ce dernier est placé à l'extérieur d'un bâtiment. Un technicien peut facilement procéder à la vérification, la maintenance et la réparation régulières des éléments actifs de l'amplificateur à faible bruit en ouvrant simplement une ouverture du boîtier de répéteur afin de remplacer le boîtier d'amplificateur par un autre boîtier d'amplificateur.
PCT/KR2006/005357 2006-12-08 2006-12-08 Amplificateur à faible bruit pour une station de base mobile WO2008069357A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2006/005357 WO2008069357A1 (fr) 2006-12-08 2006-12-08 Amplificateur à faible bruit pour une station de base mobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2006/005357 WO2008069357A1 (fr) 2006-12-08 2006-12-08 Amplificateur à faible bruit pour une station de base mobile

Publications (1)

Publication Number Publication Date
WO2008069357A1 true WO2008069357A1 (fr) 2008-06-12

Family

ID=39492226

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2006/005357 WO2008069357A1 (fr) 2006-12-08 2006-12-08 Amplificateur à faible bruit pour une station de base mobile

Country Status (1)

Country Link
WO (1) WO2008069357A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970055837A (ko) * 1995-12-29 1997-07-31 이우복 무선 중계기장치
US6125109A (en) * 1998-02-24 2000-09-26 Repeater Technologies Delay combiner system for CDMA repeaters and low noise amplifiers
KR20010097108A (ko) * 2000-04-20 2001-11-08 박종섭 이동통신 시스템의 중계기
KR20060128107A (ko) * 2005-06-08 2006-12-14 주식회사 케이엠더블유 이동통신 기지국의 저잡음 증폭기

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970055837A (ko) * 1995-12-29 1997-07-31 이우복 무선 중계기장치
US6125109A (en) * 1998-02-24 2000-09-26 Repeater Technologies Delay combiner system for CDMA repeaters and low noise amplifiers
KR20010097108A (ko) * 2000-04-20 2001-11-08 박종섭 이동통신 시스템의 중계기
KR20060128107A (ko) * 2005-06-08 2006-12-14 주식회사 케이엠더블유 이동통신 기지국의 저잡음 증폭기

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