KR20000002602A - High electric power combining/distributing equipment for transmission/reception combined use of mobile communication base station - Google Patents
High electric power combining/distributing equipment for transmission/reception combined use of mobile communication base station Download PDFInfo
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- KR20000002602A KR20000002602A KR1019980023444A KR19980023444A KR20000002602A KR 20000002602 A KR20000002602 A KR 20000002602A KR 1019980023444 A KR1019980023444 A KR 1019980023444A KR 19980023444 A KR19980023444 A KR 19980023444A KR 20000002602 A KR20000002602 A KR 20000002602A
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- mobile communication
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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
- H04B1/44—Transmit/receive switching
- H04B1/48—Transmit/receive switching in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter
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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
- H04B1/50—Circuits using different frequencies for the two directions of communication
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
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Abstract
Description
본 발명은 이동통신 시스템의 기지국에 관한 것으로, 특히 이동통신용 기지국에서 송신될 각각의 RF(Radio Frequency) CDMA(Code Division Multiple Access, 부호 분할 다원 접속) 캐리어(Carrier)들을 하나의 안테나로 송신하기 위하여 결합(Combining)하는 기능과 안테나에서 수신된 멀티 RF CDMA 캐리어를 각각의 신호 캐리어 수신단으로 분배(Dividing)하는 기능을 동시에 수행하는 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base station of a mobile communication system, and in particular, to transmit each radio frequency (RF) code division multiple access (CDMA) carriers to be transmitted from a base station for a mobile communication to one antenna. The present invention relates to an apparatus for simultaneously performing a function of combining and dividing a multi-RF CDMA carrier received from an antenna to each signal carrier receiver.
일반적으로 이동통신 시스템은 사람, 자동차, 선박, 항공기 등 이동체를 대상으로 하는 통신 시스템으로, 이에는 개인휴대통신(PCS, Personal Communication System) 시스템, 디지털 셀룰러 시스템(DCS, Digital Cellular System)과 디지털 주파수 공용통신 시스템(DTRS, Digital Trunked Radio System) 등이 사용된다.In general, a mobile communication system is a communication system for a mobile device such as a person, a car, a ship, or an aircraft, and includes a personal communication system (PCS) system, a digital cellular system (DCS), and a digital frequency. Public communication system (DTRS, Digital Trunked Radio System) is used.
도1은 종래 고전력 결합장치의 블록구성도이다.1 is a block diagram of a conventional high power coupling device.
이에 도시된 바와 같이, 이동통신 기지국 RF블록에서 송신될 CDMA 캐리어들을 하나의 안테나를 통하여 송신하기 위하여 결합하는 고전력결합부(HPCU, High Power Combining Unit)(1)와; 상기 고전력결합부(1)로 송신할 CDMA 캐리어들을 전송하는 제1 내지 제3 채널필터(Channel Filter)(2 - 4)와; 상기 고전력결합부(1)에서 수신한 멀티 RF CDMA 캐리어들을 수신하는 수신부(5)와; 상기 고전력결합부(1)와 연결되어 이동단말기와 RF CDMA 캐리어들을 송/수신하는 안테나(6)로 구성되었다.As shown therein, a high power combining unit (HPCU) 1 for combining CDMA carriers to be transmitted in a mobile communication base station RF block through one antenna; First to third channel filters (2 to 4) for transmitting CDMA carriers to be transmitted to the high power combiner (1); A receiver 5 for receiving the multi-RF CDMA carriers received by the high power combiner 1; The antenna 6 is connected to the high power combiner 1 to transmit / receive a mobile terminal and RF CDMA carriers.
그래서 종래의 이동통신 기지국 RF블록에서 송신될 CDMA 캐리어들을 하나의 안테나를 통하여 송신하기 위하여 결합하는데, 이 기능을 고전력결합부(1)에서 수행하였다. 여기서 고전력결합부(HPCU)(1)는 3개의 서로 다른 주파수 대역을 갖는 채널필터(2 - 4)와 이를 결합하는 결합 케이블(Junction Cable)로 이루어져 있다.Therefore, the CDMA carriers to be transmitted in the conventional mobile communication base station RF block are combined to transmit through one antenna, and this function is performed in the high power combiner 1. Here, the high power coupling unit (HPCU) 1 is composed of channel filters 2-4 having three different frequency bands and a coupling cable coupling the same.
그러나 종래의 장치는 하나의 채널만 사용하는 경우에도 HPCU(1)를 사용해야 하고, 3개의 채널 중 하나만 바뀌어도 HPCU를 통째로 바꾸어야 하는 문제점이 있었다. 또 HPCU(1)는 기지국의 첫 번째 래크(Rack)에 실장되는데, 그 부피가 커 기구적 제약이 많은 문제점도 있었다.However, the conventional apparatus has to use the HPCU 1 even when only one channel is used, and there is a problem in that the whole HPCU is changed even if only one of the three channels is changed. In addition, the HPCU 1 is mounted on the first rack of the base station, and its volume is large and there are many mechanical constraints.
이에 본 발명은 상기와 같은 종래의 제반 문제점을 해소하기 위해 제안된 것으로, 본 발명의 목적은 이동통신용 기지국에서 송신될 각각의 RF CDMA 캐리어들을 하나의 안테나로 송신하기 위하여 결합하는 기능과 안테나에서 수신된 멀티 RF CDMA 캐리어를 각각의 신호 캐리어 수신단으로 분배하는 기능을 동시에 수행할 수 있는 이동통신 기지국의 송/수신 겸용 고전력 결합/분배 장치를 제공하는 데 있다.Accordingly, the present invention has been proposed to solve the conventional problems as described above, and an object of the present invention is to combine a function of combining each RF CDMA carriers to be transmitted by a base station for mobile communication to a single antenna and receiving at an antenna. The present invention provides a high power combining / distributing device for both transmission and reception of a mobile communication base station that can simultaneously perform a function of distributing multiple RF CDMA carriers to each signal carrier receiving end.
상기와 같은 목적을 달성하기 위하여 본 발명에 의한 이동통신 기지국의 송/수신 겸용 고전력 결합/분배 장치는,In order to achieve the above object, a high power combining / distributing device for both transmission and reception of a mobile communication base station according to the present invention,
안테나를 송신과 수신에 공동으로 사용하기 위하여 송신할 때에는 송신 출력으로부터 수신기를 보호하고, 수신할 때에는 반향 신호를 수신부에 공급하는 듀플렉서와; 상기 듀플렉서에서 대역제한된 신호를 저잡음 증폭하는 저잡음 증폭부와; 상기 저잡음 증폭부에서 저잡음 증폭된 신호를 분배하여 상기 수신부로 전송하는 분배부와; 서로 다른 주파수 대역을 갖는 복수개 채널필터의 송신 데이터를 결합하여 상기 듀플렉서로 전송하는 복수개의 순환부로 이루어짐을 그 기술적 구성상의 특징으로 한다.A duplexer which protects the receiver from a transmission output when transmitting the antenna for joint use in transmission and reception, and supplies an echo signal to the receiver when receiving; A low noise amplifier for low noise amplifying the band-limited signal from the duplexer; A distribution unit for distributing the low noise amplified signal from the low noise amplifier and transmitting the signal to the receiver; The technical configuration is characterized by consisting of a plurality of circulation unit for transmitting the transmission data of a plurality of channel filters having different frequency bands to be transmitted to the duplexer.
도 1은 종래 고전력 결합장치의 블록구성도,1 is a block diagram of a conventional high power coupling device;
도 2는 본 발명에 의한 이동통신 기지국의 송/수신 겸용 고전력 결합/분배 장치의 블록구성도.2 is a block diagram of a high power combining / distributing device for both transmission and reception of a mobile communication base station according to the present invention;
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for main parts of the drawings>
10 : 고전력 결합/분배부 11 : 듀플렉서10: high power coupling / distribution 11: duplexer
12 : 저잡음 증폭부 13 : 분배부12: low noise amplifier 13: distribution unit
14, 15 : 제1 및 제2 순환부 16 : 커플러14, 15: first and second circulation portion 16: coupler
이하, 상기와 같이 구성된 본 발명 이동통신 기지국의 송/수신 겸용 고전력 결합/분배 장치의 기술적 사상에 따른 일실시예를 첨부한 도면에 의거 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings an embodiment according to the technical idea of the high-power combined / distributed device combined with the transmission / reception of the present invention configured as described above in detail as follows.
먼저 본 발명은 종래의 문제점을 극복하기 위하여 채널필터와 결합회로 부분을 서로 분리하여 기구적 제약을 극복하고, 채널필터의 교체를 용이하게 하고자, 종래의 FEU(Front End Unit, 송/수신 대역 제한 및 수신 신호 분리기능)에 결합(Combining) 기능을 추가하여 송/수신 겸용 고전력 결합/분배 및 대역 제한 기능이 있는 장치를 구현한 것이다. 여기서 결합의 원리는 순환기의 단방향 순환성을 이용한 것이다.First, the present invention is to overcome the mechanical constraints by separating the channel filter and the coupling circuit portion from each other in order to overcome the conventional problems, to facilitate the replacement of the channel filter, the conventional front end unit (FEU) And a combination of a received signal separation function and a combination function to implement a device having a high power combining / distribution and band limiting function for both transmission and reception. The principle of coupling here is to use the unidirectional circulation of the circulator.
도2는 본 발명에 의한 이동통신 기지국의 송/수신 겸용 고전력 결합/분배 장치의 블록구성도이다.2 is a block diagram of a high power combining / distributing device for both transmission and reception of a mobile communication base station according to the present invention.
이에 도시된 바와 같이, 안테나(6)를 송신과 수신에 공동으로 사용하기 위하여 송신할 때에는 송신 출력으로부터 수신기를 보호하고, 수신할 때에는 반향(Echo) 신호를 수신부(5)에 공급하는 듀플렉서(Duplexer)(11)와; 상기 듀플렉서(11)에서 대역제한된 신호를 저잡음 증폭하는 저잡음 증폭부(LNA, Low Noise Amplifier)(12)와; 상기 저잡음 증폭부(12)에서 저잡음 증폭된 신호를 분배하여 수신부(5)로 전송하는 분배부(13)와; 서로 다른 주파수 대역을 갖는 복수개 채널필터(2 - 4)의 송신 데이터를 결합하여 상기 듀플렉서(11)로 전송하는 복수개의 순환부(Circulator)(14)(15)로 구성된다.As shown therein, a duplexer which protects the receiver from the transmission output when transmitting the antenna 6 for common use in transmission and reception, and supplies an echo signal to the receiver 5 when receiving it. 11; A low noise amplifier (LNA) 12 for low noise amplifying the band-limited signal from the duplexer 11; A distribution unit 13 for distributing the low noise amplified signal from the low noise amplifier 12 and transmitting the signal to the receiver 5; It consists of a plurality of circulators (14, 15) for combining the transmission data of the plurality of channel filters (2-4) having different frequency bands and transmits them to the duplexer (11).
그래서 전력증폭기로부터 증폭되어 각 제1 내지 제3 채널필터(2 - 4)를 통과한 RF CDMA 캐리어 신호들은 제1 및 제2 순환부(14)(15)를 통하여 결합되어, 송신대역 통과 필터와 30dB 커플러(신호 검출용)(16)를 거쳐 안테나(6)에 송신 신호를 전송하게 된다.Thus, the RF CDMA carrier signals amplified from the power amplifier and passed through each of the first to third channel filters 2 to 4 are combined through the first and second circuits 14 and 15 to be connected with the transmission band pass filter. The transmission signal is transmitted to the antenna 6 via a 30 dB coupler (for signal detection) 16.
그리고 안테나(6)로부터 수신된 RF 신호는 30dB 커플러(16)를 거쳐, 수신대역 통과 필터인 듀플렉서(11)의 필터에서 대역제한된 후 저잡음 증폭부(12)에서 저잡음 증폭되고, 전력 분배부(Divider)(13)에서 신호가 분리되어 각 수신단으로 분배하게 된다. 그리고 저잡음 증폭부(12)의 이상시 알람 기능이 구현되어 있다.The RF signal received from the antenna 6 is band-limited by the filter of the duplexer 11, which is a reception band pass filter, through the 30 dB coupler 16, and then low noise amplified by the low noise amplifier 12, and the power divider In (13), the signal is separated and distributed to each receiver. And when the abnormal noise alarm function of the low noise amplifier 12 is implemented.
또한 순환부(Circulator)(14)(15)는 각 단자쌍이 정합 조건을 만족할 때 단자쌍 1로 부터의 입력은 단자쌍 2만으로 전송되어 다른 단자쌍에는 전송되지 않는 특성을 각 단자쌍에 대하여 순환하면서 지니고 있는 다단자쌍망으로써, 이러한 순환부(14)(15)의 전기적 특성은 2 port isolation(20dB min), 정재파비(VSWR, Voltage Standing Wave Ratio)(1.22 : 1 max), 전력(150 Watt min), 삽입 손실(0.2dB max)이다.In addition, circulators 14 and 15 circulate with respect to each terminal pair a characteristic in which input from terminal pair 1 is transmitted to terminal pair 2 only when each terminal pair satisfies a matching condition. As a multi-terminal pair network, the electrical characteristics of the circuit 14, 15 are 2 port isolation (20 dB min), Voltage Standing Wave Ratio (VSWR) (1.22: 1 max), and power (150 Watt). min), insertion loss (0.2 dB max).
이처럼 본 발명은 이동통신용 기지국에서 송신될 각각의 RF CDMA 캐리어들을 하나의 안테나로 송신하기 위하여 결합하는 기능과 안테나에서 수신된 멀티 RF CDMA 캐리어를 각각의 신호 캐리어 수신단으로 분배하는 기능을 동시에 수행하게 되는 것이다.As such, the present invention simultaneously performs a function of combining the respective RF CDMA carriers to be transmitted by the mobile communication base station to one antenna and distributing the multi-RF CDMA carriers received from the antenna to each signal carrier receiving end. will be.
이상에서 본 발명의 바람직한 실시예를 설명하였으나, 본 발명은 다양한 변화와 변경 및 균등물을 사용할 수 있다. 본 발명은 상기 실시예를 적절히 변형하여 동일하게 응용할 수 있음이 명확하다. 따라서 상기 기재 내용은 하기 특허청구범위의 한계에 의해 정해지는 본 발명의 범위를 한정하는 것이 아니다.Although the preferred embodiment of the present invention has been described above, the present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.
이상에서 살펴본 바와 같이, 본 발명에 의한 이동통신 기지국의 송/수신 겸용 고전력 결합/분배 장치는 채널필터와 결합회로 부분을 서로 분리하여 기구적 제약을 극복하고, 채널필터의 교체를 용이하게 하고자 종래의 FEU에 결합기능을 추가하여 송수신 겸용 고전력 결합/분리 및 대역제한을 수행할 수 있는 효과가 있게 된다.As described above, the high-power combining / distributing device for both a transmission and reception base station according to the present invention separates the channel filter and the coupling circuit portion from each other, overcomes mechanical constraints, and facilitates replacement of the channel filter. By adding a coupling function to the FEU of the transmitter, it is possible to perform high power combining / separation and band limiting for both transmission and reception.
또한 본 발명은 종래의 장치에 비해 송신단의 전력손실(.4dB)이 증가하는 단점은 있으나, 형상이 단순화되고, 채널필터의 관리 및 교체가 용이하며, 채널필터의 기구적 제약이 줄어들기 때문에 저비용/고특성 필터의 제작이 가능해지는 장점이 있게 된다.In addition, the present invention has a disadvantage in that the power loss (.4dB) of the transmitting end is increased compared to the conventional device, but because the shape is simplified, the management and replacement of the channel filter is easy, and the mechanical constraints of the channel filter is reduced, low cost / The advantage of being able to manufacture a high-quality filter.
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019980023444A KR20000002602A (en) | 1998-06-22 | 1998-06-22 | High electric power combining/distributing equipment for transmission/reception combined use of mobile communication base station |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019980023444A KR20000002602A (en) | 1998-06-22 | 1998-06-22 | High electric power combining/distributing equipment for transmission/reception combined use of mobile communication base station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100353717B1 (en) * | 2000-05-04 | 2002-09-28 | 삼성전자 주식회사 | High accuracy receiver forward and reflected path test injection circuit and operating method therefor |
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1998
- 1998-06-22 KR KR1019980023444A patent/KR20000002602A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100353717B1 (en) * | 2000-05-04 | 2002-09-28 | 삼성전자 주식회사 | High accuracy receiver forward and reflected path test injection circuit and operating method therefor |
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