Things You Need to Know About Combiner and Duplexer
In this article, UIY will introduce the Combiner and Duplexer, and their differences.
1.Combiner:
In the wireless mobile phone communication system, the main function of the combiner is to combine the input multi-band signals and output them to the same indoor distribution system.
The combiner is generally used at the transmitting end. Its function is to combine two or more radio frequency signals from different transmitters into one and send it to the radio frequency device transmitted by the antenna, while avoiding the mutual influence between the signals of each port.
Pic. 1 UIY Hybrid combiner Series
A combiner generally has two or more input ports and only one output port.
Port isolation is a relatively important indicator, which is used to describe the ability of two signals to not affect each other, and generally requires more than 20dB.
Pic.2 Hybrid combiner UIY 2In2Out 350-520MHz Hybrid Coupler
The 2In2out combiner has two input ports and two output ports, and is often used to synthesize two wireless carrier frequencies and feed them into an antenna or distribution system. If only one output port is used, the other output port needs to be connected to the load.
Combine the signal receiving and sending of the signal mobile phone into one antenna.
In the GSM system, since the sending and receiving are not in the same time slot, the mobile phone can save the duplexer for isolating the sending and receiving, and just use a simple sending and receiving combiner to combine the sending and receiving signals into one antenna without interfering with each other.
In engineering applications, it is necessary to combine the two frequencies of the 800MHz.
C network and the 900MHz G network to output. By adopting the combiner, a set of indoor distribution system can work in the CDMA frequency band and the GSM frequency band at the same time.
Pic. 3 UIY 2In2Out 698-2700MHz Hybrid Combiner
Another example is in the radio antenna system, after the input and output signals of several different frequency bands (such as 145MHZ and 435MHZ) are combined through the combiner, a feeder is used to connect to the radio, which not only saves a feeder, but also avoids the hassle of switching between different antennas.
2. Duplexer:
The duplexer is the Inter-frequency duplex radio, which is the main accessory of repeater.
The function is to isolate the transmitting and receiving signals to ensure that the receiving and transmitting can work normally at the same time. It is composed of two sets of band-pass filters with different frequencies to avoid the transmission of the local transmission signal to the receiver.
Pic. 4: UIY Duplexer Series
Usually the differences of V-band, U-band duplexer transmit and receive frequency is 5MHz, and same as the working bandwidth 5MHz to ensure the duplexer isolation of more than 80dB.
It has proved that using a duplexer is better than using two antennas to transmit and receive.
3. Difference Between Combiner and Duplexer
3.1 Different uses
Duplexers are generally used at the output and input of the device to isolate signals in different frequency bands. For example: the uplink and downlink signals of mobile communication.
Combiners are generally used in power synthesis in hardware circuits. For example: to get a 40dbm signal, two power amplifiers with an output power of 20dbm can be used to combine.
3.2 Different structures:
the inside of the duplexer are filter cavities;the inside of the combiner is a coupling circuit.
3.3 Different signal processing methods:
the duplexer only handles different frequency signals,while the combiner can handle both the same frequency and different frequencies.
- |
- +1 赞 0
- 收藏
- 评论 0
本文由上山打老虎转载自UIY News，原文标题为:Things You Need to Know About Combiner and Duplexer，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。
相关推荐
UIYDX9580B 5565 to 5850MHz – Duplexer / Diplexer
型号- UIYDX9580B5565T5850SFTNF,UIYDX9580B,UIYDX9580B5565T5850SF
UIYDX136179A 380 to 425MHz – Duplexer / Diplexer
型号- UIYDX136179A,UIYDX136179A380T429NF,UIYDX136179A380T429SF,UIYDX136179A380T395SF,UIYDX136179A380T395NF
60 to 800MHz – Duplexer / Diplexer
型号- UIYDX14073A87T470SF,UIYDX14073A400T800NF,UIYDX14073A60T175NF,UIYDX14073A136T800NF,UIYDX14073A87T470NF
UIYDX275200A 300 to 380MHz – Duplexer / Diplexer
型号- UIYDX275200A,UIYDX275200A300T380NF,UIYDX275200A300T380DF
UIYDX265140A 876 to 960MHz – Duplexer / Diplexer
型号- UIYDX265140A876T960SF,UIYDX265140A,UIYDX265140A876T960NF
UIYDX5854A 136 to 470MHz – Duplexer / Diplexer
型号- UIYDX5854A,UIYDX5854A136T470NF,UIYDX5854A136T470SF
UIYDX118118A 1850 to 1990MHz – Duplexer / Diplexer
型号- UIYDX118118A,UIYDX118118A1850T1990NF,UIYDX118118A1850T1990SF
350 to 520MHz - 8 TX Combiner
型号- UIY8TC1UB400T420NF,UIY8TC1UB410T440NF,UIY8TC1UB440T470NF,UIY8TC1UB450T470NF,UIY8TC1UB351T366NF
UIY2TC1UB 350 to 520MHz - 2 TX Combiner
型号- UIY2TC1UB450T470NF,UIY2TC1UB440T470NF,UIY2TC1UB351T366NF,UIY2TC1UB,UIY2TC1UB410T440NF,UIY2TC1UB400T420NF
UIYDX166125A 405 to 470MHz – Duplexer / Diplexer
型号- UIYDX166125A,UIYDX166125A405T470SF,UIYDX166125A405T470NF
UIYDX9580A 5350 to 5725MHz – Duplexer / Diplexer
型号- UIYDX9580A,UIYDX9580A5350T5725SFTNF,UIYDX9580A5350T5725SF
电子商城
现货市场
服务
可定制射频隔离器/环行器（10M-40GHz），双工器/三工器（30MHz/850MHz-20GHz），滤波器（DC-20GHz），功分器，同轴负载，同轴衰减器等射频器件；可定制频率覆盖DC~110GHz，功率最高20KW。
最小起订量： 1 提交需求>
授权代理品牌：集成电路
授权代理品牌：分立元件
授权代理品牌：接插件及结构件
授权代理品牌：部件、组件及配件
授权代理品牌：电源及模块
授权代理品牌：电子材料
授权代理品牌：仪器仪表及测试配组件
授权代理品牌：电工工具及材料
授权代理品牌：机械电子元件
授权代理品牌：加工与定制
我要提问
登录 | 立即注册
提交评论