KR19980030538A - Outdoor base station circuit of personal mobile communication system with radio frequency part installed near antenna - Google Patents
Outdoor base station circuit of personal mobile communication system with radio frequency part installed near antenna Download PDFInfo
- Publication number
- KR19980030538A KR19980030538A KR1019960049991A KR19960049991A KR19980030538A KR 19980030538 A KR19980030538 A KR 19980030538A KR 1019960049991 A KR1019960049991 A KR 1019960049991A KR 19960049991 A KR19960049991 A KR 19960049991A KR 19980030538 A KR19980030538 A KR 19980030538A
- Authority
- KR
- South Korea
- Prior art keywords
- radio frequency
- base station
- unit
- circuit
- communication system
- Prior art date
Links
Landscapes
- Transceivers (AREA)
Abstract
본 발명의 목적은 증폭된 송신신호가 손실없이 안테나에서 방사되고, 안테나에서 흡수된 수신신호가 잡음없이 증폭될 수 있는 개인휴대 통신시스템의 옥외용 기지국 회로를 제공하는데 있다.It is an object of the present invention to provide an outdoor base station circuit of a personal mobile communication system in which an amplified transmission signal is radiated from an antenna without loss and the received signal absorbed from the antenna can be amplified without noise.
본 발명에 따른 개인휴대 통신시스템의 옥외용 기지국 회로는 고전력 증폭기(13), 저잡음 증폭기(14), 서큐레이터(12) 및 듀플렉서(15)를 포함하는 다수개의 무선주파수부(11)와 다수개의 디지탈부(2)를 포함하는 송수신회로(1)와; 상기 송수신회로(1)의 무선주파수부(11) 및 디지탈부(2)에 접속되어 기준클럭을 발생시켜 무선주파수부(11) 및 디지탈부(2)에 공급하는 글로벌 위치 선정 시스템부(21)를 포함하는 개인휴대 통신시스템의 옥외용 기지국 회로에 있어서, 상기 송수신회로(1)의 무선주파수부(11)는 송수신회로(1)의 디지탈부(2)와 분리되어 안테나에 근접하여 설치되는 것을 특징으로 한다.The outdoor base station circuit of the personal mobile communication system according to the present invention includes a plurality of radio frequency units 11 and a plurality of digital devices including a high power amplifier 13, a low noise amplifier 14, a circulator 12, and a duplexer 15. A transceiver circuit 1 comprising a section 2; The global positioning system unit 21 connected to the radio frequency unit 11 and the digital unit 2 of the transmission / reception circuit 1 to generate a reference clock and supply the radio frequency unit 11 and the digital unit 2 to the radio frequency unit 11 and the digital unit 2. In the outdoor base station circuit of the personal mobile communication system comprising a, the radio frequency unit 11 of the transceiver circuit 1 is separated from the digital unit 2 of the transceiver circuit 1 is installed in close proximity to the antenna It is done.
이렇게 함으로써, 옥외용 기지국의 송신 및 수신성능이 향상시킬 수 있다.By doing so, the transmission and reception performance of the outdoor base station can be improved.
Description
본 발명은 개인휴대 통신시스템(Personal Communication System)에 관한 것이며, 보다 상세히는 건물옥상이나 전화 부스위에 설치되는 개인휴대 통신시스템의 옥외용 기지국 회로에 관한 것이다.The present invention relates to a personal communication system (Personal Communication System), and more particularly to an outdoor base station circuit of a personal mobile communication system installed on the building roof or telephone booth.
도 1은 종래의 개인휴대 통신시스템의 옥외용 기지국 회로도이다.1 is a circuit diagram of an outdoor base station of a conventional personal mobile communication system.
도 1의 옥외용 기지국 회로는 송신신호와 수신신호를 분리하는 서큐레이터(Circulator:12)와, 상기 서큐레이터(12)에 접속되어 송신신호를 증폭시키고 고전력 증폭기(High Power Amplifier:13)와, 상기 서큐레이터(12)에 접속되어 수신신호를 저잡음 증폭시키는 저잡음 증폭기(Low Noise Amplifier:14)와, 상기 고전력 증폭기(13) 및 저잡음 증폭기(14)에 접속되어 송신시에는 송신출력만을 여파하여 안테나측으로 출력하고, 수신시에는 수신신호만을 여파하여 저잡음 증폭기로 출력하는 듀플렉서(Duplexer:15)를 포함하는 다수개의 무선주파수부(11)와; 상기 무선주파수부(11)의 서큐레이터(12)에 접속되어 송신할 음성신호에서 디지탈 데이타 신호를 생성하여 베이스 밴드(Base Band:4.95MHz) 아날로그 신호로 변조한 후 개인휴대 통신용 주파수로 상향변환하여 상기 무선주파수부(11)의 서큐레이터(12)로 출력하고, 서큐레이터(12)로부터 수신신호를 입력하여 베이스 밴드의 아날로그 신호로 하향변환한 후 In-Phase and Quadrature(IQ)신호로 분리하여 디지탈 데이타를 생성하는 다수개의 디지탈부(2)를 포함하는 송수신회로(1)와; 상기 송수신회로(1)의 무선주파수부(11) 및 디지탈부(2)에 접속되어 10MHz 신호로부터 기준클럭을 발생시켜 무선주파수부(11) 및 디지탈부(2)에 공급하여 기지국 상호간, 기지국과 단말기간 또는 무선주파수부(11)와 디지탈부(2)간의 동기를 맞추어 주는 글로벌 위치 선정 시스템부(Global Positioning System:GPS:21)으로 구성된다.The outdoor base station circuit of FIG. 1 includes a circulator 12 which separates a transmission signal and a reception signal, and is connected to the circulator 12 to amplify the transmission signal, and a high power amplifier 13; A low noise amplifier 14 connected to the circulator 12 for low noise amplification of the received signal, and a high noise amplifier 13 and a low noise amplifier 14 are connected to the high power amplifier 13 and the low noise amplifier 14. A plurality of radio frequency units (11) including a duplexer (Duplexer 15) for outputting and filtering only a received signal upon reception and outputting the received signal to a low noise amplifier; It is connected to the circulator 12 of the radio frequency unit 11, generates a digital data signal from a voice signal to be transmitted, modulates it into a baseband (4.95 MHz) analog signal, and then up-converts to a frequency for personal mobile communication. Outputs to the circulator 12 of the radio frequency unit 11, receives the received signal from the circulator 12, down-converts to an analog signal of the baseband, and separates the signal into In-Phase and Quadrature (IQ) signals. A transmission / reception circuit (1) comprising a plurality of digital units (2) for generating digital data; It is connected to the radio frequency unit 11 and the digital unit 2 of the transmission and reception circuit 1, generates a reference clock from the 10 MHz signal, and supplies the radio frequency unit 11 and the digital unit 2 to the base station and the base station. It consists of a Global Positioning System (GPS) 21 which synchronizes synchronization between terminals or between the radio frequency unit 11 and the digital unit 2.
안테나는 송수신회로(1)에 포함된 듀플렉서(15)에 일 대 일로 접속되며, 송신수신회로(1)와 글로벌 위치선정 시스템부(21)는 하나의 랙(Rack)내에 실장되어 있다.The antenna is connected to the duplexer 15 included in the transmission and reception circuit 1 in a one-to-one manner, and the transmission and reception circuit 1 and the global positioning system unit 21 are mounted in one rack.
종래의 개인휴대 통신시스템의 옥외용 기지국 회로는 무선주파수부와 안테나의 거리가 멀어 무선주파수부에서 증폭된 송신신호가 안테나에 도달하기전에 감소되어 안테나에서 방사되는 송신출력이 낮아지고, 안테나에서 흡수한 수신신호는 무선주파수부에 도달하기전에 잡음의 영향을 받아 잡음지수가 나빠지므로 옥외용 기지국의 송신 및 수신성능이 저하된다는 문제점이 있었다. 송신출력을 증가시키기 위해 고성능의 고전력 증폭기를 사용하여 상기 문제점을 해소할 수 있으나 설치비용이 증가되어 바람직하지 않다.The outdoor base station circuit of the conventional personal mobile communication system has a long distance between the radio frequency unit and the antenna, so that the transmission signal amplified in the radio frequency unit is reduced before reaching the antenna, so that the transmission power radiated from the antenna is lowered and absorbed by the antenna. Since the received signal is affected by noise before reaching the radio frequency unit, the noise index is deteriorated, which causes a problem in that transmission and reception performance of an outdoor base station is degraded. The above problem can be solved by using a high performance high power amplifier to increase the transmission power, but it is not preferable because the installation cost is increased.
본 발명의 목적은 증폭된 송신신호가 손실없이 안테나에서 방사되고, 안테나에서 흡수된 수신신호가 잡음없이 증폭될 수 있는 개인휴대 통신시스템의 옥외용 기지국 회로를 제공하는데 있다.It is an object of the present invention to provide an outdoor base station circuit of a personal mobile communication system in which an amplified transmission signal is radiated from an antenna without loss and the received signal absorbed from the antenna can be amplified without noise.
도 1은 종래의 개인휴대 통신시스템의 옥외용 기지국 회로도.1 is a circuit diagram of an outdoor base station of a conventional personal mobile communication system.
도 2는 본 발명에 따른 개인휴대 통신시스템의 옥외용 기지국 회로도.2 is an outdoor base station circuit diagram of a personal mobile communication system according to the present invention;
*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
A:안테나CIR:서큐레이터A: Antenna CIR: Circulator
DUP:듀플렉서GPS:글로벌 위치선정 시스템부DUP: Duplexer GPS: Global Positioning System
HPA:고전력 증폭기LNA:저잡음 증폭기HPA: High Power Amplifier LNA: Low Noise Amplifier
도 2는 본 발명에 따른 개인휴대 통신시스템의 옥외용 기지국 회로도이다.2 is a circuit diagram of an outdoor base station of a personal mobile communication system according to the present invention.
본 발명은, 고전력 증폭기(13), 저잡음 증폭기(14), 서큐레이터(12) 및 듀플렉서(15)를 포함하는 다수개의 무선주파수부(11)와 다수개의 디지탈부(2)를 포함하는 송수신회로(1)와; 상기 송수신회로(1)의 무선주파수부(11) 및 디지탈부(2)에 접속되어 기준클럭을 발생시켜 무선주파수부(11) 및 디지탈부(2)에 공급하는 글로벌 위치선정 시스템부(21)를 포함하는 개인휴대 통신시스템의 옥외용 기지국 회로에 있어서, 상기 송수신회로(1)의 무선주파수부(11)는 송수신회로(1)의 디지탈부(2)와 분리되어 안테나에 근접하여 설치되는 것을 특징으로 한다.The present invention provides a transmission and reception circuit including a plurality of radio frequency units 11 and a plurality of digital units 2 including a high power amplifier 13, a low noise amplifier 14, a circulator 12, and a duplexer 15. (1); The global positioning system unit 21 connected to the radio frequency unit 11 and the digital unit 2 of the transmission / reception circuit 1 to generate a reference clock and supply it to the radio frequency unit 11 and the digital unit 2. In the outdoor base station circuit of the personal mobile communication system comprising a, the radio frequency unit 11 of the transceiver circuit 1 is separated from the digital unit 2 of the transceiver circuit 1 is installed in close proximity to the antenna It is done.
본 발명에서는 송수신회로(1)의 무선주파수부(11)와 디지탈부(2)는 RS-232C케이블(31)로, 송수신회로(1)의 무선주파수부(11)와 글로벌 위치선정 시스템부(21)는 별도의 동축케이블(41)로 연결된다.In the present invention, the radio frequency unit 11 and the digital unit 2 of the transmission and reception circuit 1 are RS-232C cable 31, the radio frequency unit 11 and the global positioning system unit ( 21 is connected to a separate coaxial cable (41).
안테나는 송수신회로(11)에 포함된 듀플렉서(15)에 일 대 일로 접속되며, 본 발명에 따른 개인휴대 통신시스템의 옥외용 기지국 회로의 동작은 종래의 경우와 동일하다.The antenna is connected one-to-one to the duplexer 15 included in the transmission and reception circuit 11, the operation of the outdoor base station circuit of the personal mobile communication system according to the present invention is the same as the conventional case.
상술한 바와 같이, 하나의 랙내에 송수신회로의 무선주파수 및 디지탈부를 실장하는 종래와는 달리, 본 발명에서는 송수신회로의 무선주파수부를 디지탈부로부터 분리하여 안테나에 근접하여 설치함으로써, 고전력 증폭기에서 증폭된 송신신호를 손실없이 안테나에서 방사할 수 있고, 안테나에서 흡수된 수신신호를 잡음없이 저잡음 증폭기에서 증폭할 수 있으므로 옥외용 기지국의 송신 및 수신성능이 향상시킬 수 있다.As described above, unlike the prior art in which the radio frequency and the digital portion of the transceiver circuit are mounted in one rack, in the present invention, the radio frequency portion of the transceiver circuit is separated from the digital portion and installed close to the antenna, thereby amplifying the high power amplifier. Since the transmission signal can be radiated from the antenna without loss and the received signal absorbed from the antenna can be amplified by the low noise amplifier without noise, the transmission and reception performance of the outdoor base station can be improved.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960049991A KR19980030538A (en) | 1996-10-30 | 1996-10-30 | Outdoor base station circuit of personal mobile communication system with radio frequency part installed near antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960049991A KR19980030538A (en) | 1996-10-30 | 1996-10-30 | Outdoor base station circuit of personal mobile communication system with radio frequency part installed near antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR19980030538A true KR19980030538A (en) | 1998-07-25 |
Family
ID=66315459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960049991A KR19980030538A (en) | 1996-10-30 | 1996-10-30 | Outdoor base station circuit of personal mobile communication system with radio frequency part installed near antenna |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR19980030538A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100310989B1 (en) * | 1998-04-24 | 2001-12-17 | 김상기 | Antenna system using low power amplifier |
-
1996
- 1996-10-30 KR KR1019960049991A patent/KR19980030538A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100310989B1 (en) * | 1998-04-24 | 2001-12-17 | 김상기 | Antenna system using low power amplifier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7962174B2 (en) | Transceiver architecture and method for wireless base-stations | |
| AU6902000A (en) | Automatic gain control loop for frequency conversion of quadrature signals | |
| US7639990B2 (en) | Wireless communications device | |
| TR200000638T2 (en) | Systems and method for sharing reference frequency signals between a wireless transceiver and a global positioner system receiver in a wireless mobile terminal | |
| IL143764A0 (en) | Integrated transmitter and receiver components for a dual-band transceiver | |
| CA2044774A1 (en) | Receiver for a cellular mobile radio communication system | |
| NZ581379A (en) | A repeater system for extending cell coverage by repeating a signal at an alternate frequency | |
| US20170181108A1 (en) | Power amplification module for multiple bands and multiple standards | |
| US20020123306A1 (en) | Channelized booster amplifier for cellular communications | |
| US6292652B1 (en) | Repeater having frequency conversion | |
| KR100799679B1 (en) | Microwave repeater using frequency division duplexing and time division duplexing method | |
| KR20060112268A (en) | Radio repeater for in-building service | |
| KR19980030538A (en) | Outdoor base station circuit of personal mobile communication system with radio frequency part installed near antenna | |
| KR20020070729A (en) | Signal repeater for radio communication system | |
| MY112693A (en) | Radio station having a remote antenna unit | |
| KR100700459B1 (en) | Outdoor device for processing received signal of base station in mobile communication system and base station in mobile communication system | |
| KR100676227B1 (en) | Method and apparatus for mobile communication repeating system of vessel | |
| JPH05344037A (en) | Portable radio telephone set | |
| KR20050009345A (en) | Radio signal transmit/receive switching circuit using low power switch in time division duplex system | |
| KR20060099210A (en) | A base transceiver station in communication system | |
| KR20040038257A (en) | Apparatus for conjugation of GPS antenna cable and BTS antenna cable | |
| SE9803991L (en) | Radio communication method and apparatus | |
| KR20000012697U (en) | Miniature repeater for mobile communication by frequency conversion method | |
| KR20010098126A (en) | Orthogonal call noise simulator | |
| RU23221U1 (en) | TELEMETRIC COMMUNICATION RADIO STATION FOR VEHICLE |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application |