CN203387500U - Multi-band input-based novel POI system with multiple input multiple output (MIMO) function - Google Patents
Multi-band input-based novel POI system with multiple input multiple output (MIMO) function Download PDFInfo
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- CN203387500U CN203387500U CN201320438921.7U CN201320438921U CN203387500U CN 203387500 U CN203387500 U CN 203387500U CN 201320438921 U CN201320438921 U CN 201320438921U CN 203387500 U CN203387500 U CN 203387500U
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Abstract
The utility model relates to a multi-band input-based novel POI system with a multiple input multiple output (MIMO) function. The novel POI system mainly comprises a radio frequency amplification unit, a POI-I and a POI-II, wherein the radio frequency amplification unit includes a TX1 power amplifier, an RX1 low-noise amplifier, a TX2 power amplifier, an RX2 low-noise amplifier, a TX3 power amplifier, an RX3 low-noise amplifier, a TX4 power amplifier and an RX4 low-noise amplifier, the POI-I includes a TX1 filter, a TX2 filter, a circulator III and a filter III and a combiner I, and the POI-II includes an RX1 filter, an RX2 filter, a circulator IV, a filter IV, and a combiner II. The utility model has the advantages that: the utility requires a separate 2 different antenna feeder system demand by the model structure of MIMO, the FDD band transceiver separation system, were covered by different antennas, which will greatly reduce the isolation and channel to channel isolation degree requirements, greatly reduce the filter volume, cost of POI.
Description
Technical field
The utility model relates to the mobile communication network optimization field, especially a kind of for multiband input and with the novel POI system of MIMO function.
Background technology
Along with the mobile Internet fast development, 4G LTE network starts to rise, 2G, 3G and 4G multi-operator, multisystem, multi-modulation scheme, multiband situation are by Long Coexistence, and for 4G LTE network, MIMO will increase user's downloading rate greatly, if operator adopts, distributing antenna system (DAS:Distributed Antenna System) just can be accomplished once to dispose, multi-network cooperative, shares the necessary resources such as antenna feeder, transmission and power supply.Compare single system, one-segment system in the past, multi-modulation scheme, multi-band signal be closed to road to sharing antenna-feedback system simultaneously, need POI to carry out filtering and close road.Affect two factors of POI design difficulty and product cost maximum: the receive-transmit isolation of (1) single system, frequency range self requires the channel isolation requirement between (singly referring to the FDD system) (2) multi-modulation scheme, multiband.Traditional to multiband input and band MIMO function implementation as shown in Figure 1: take 2 road FDD frequency ranges+1 road TDD frequency range (MIMO) is example, wherein " radio frequency amplifying unit " comprising: TX1/RX1 is frequency range 1(FDD) the transmitting/receiving part, TX2/RX3 is frequency range 2(FDD) the transmitting/receiving part, TX3/RX3 is frequency range 3(TDD) the transmitting/receiving part, TX4/RX4 is frequency range 3(TDD) the transmitting/receiving part of MIMO.Traditional approach " POI " comprising: the duplexer I, and to frequency range 1, transmitting-receiving is carried out filtering and is closed road; The duplexer II, to frequency range 2, transmitting-receiving is carried out filtering and is closed road; Circulator III and filter III are received and dispatched and are closed road filtering frequency range 3; Finally " frequency range 1+ frequency range 2+ frequency range 3 " covered via the antenna I after closing road by mixer; Circulator IV and filter IV are received and dispatched and are closed road filtering frequency range 3MIMO in addition, finally by the antenna II, realize that the MIMO of frequency range 3 covers.Self receive-transmit isolation reaches (singly referring to the FDD system) by duplexer I own and the inner performance of filter of duplexer II, and the interchannel isolation reaches by the inhibition degree between duplexer I and duplexer II and filter III.The biggest factor that affects POI design difficulty and cost is the Out-of-band rejection index, as shown in Figure 3 between the transmitting-receiving of self frequency range of " in conventional P OI " duplexer I, duplexer II, filter III and mixer between isolation and 3 kinds of frequency ranges the channel isolation index must meet machine requirement.Suppose with at present middle telecommunications CDMA standard (passage 1, RX1:825～835MHz, TX1:870～880MHz), middle mobile GSM standard (passage 2, RX2:889～909MHz, TX2:934～954MHz), middle mobile TD-LTE MIMO standard (passage 3/4, RX3/4:2320～2370MHz, TX3/4:2320～2370MHz) sharing a set of antenna-feedback system is example, only have the isolation strip of 9MHz between passage 1 and passage 2, the design difficulty of POI is quite large, the cost costliness.
Summary of the invention
The utility model will solve the shortcoming of above-mentioned prior art, provides a kind of simple in structure, and volume is little, cheaply for multiband input and with the novel POI system of MIMO function.
The utility model solves the technical scheme that its technical problem adopts: this for the multiband input and with the novel POI system of MIMO function, mainly comprise the radio frequency amplifying unit, POI-I and POI-II, the radio frequency amplifying unit comprises the TX1 power amplifier, the RX1 LNA, the TX2 power amplifier, the RX2 LNA, the TX3 power amplifier, the RX3 LNA, TX4 power amplifier and RX4 LNA, the POI-I comprises the TX1 filter, the TX2 filter, circulator III and filter III and mixer I, the POI-II comprises the RX1 filter, the RX2 filter, circulator IV and filter IV and mixer II, the output of TX1 power amplifier is connected with the input of TX1 filter, the output of RX1 filter is connected with the input of RX1 LNA, the output of TX2 power amplifier is connected with the input of TX2 filter, the output of RX2 filter is connected with the input of RX2 LNA, the output of TX3 power amplifier is connected with the input of circulator III, the output of circulator IV is connected with the input of RX3 LNA, the output of TX4 power amplifier is connected with the input of circulator IV, the output of circulator III is connected with the input of RX4 LNA, the mixer I is connected with the antenna I, the mixer II is connected with the antenna II.
The output of described TX1 filter and TX2 filter is connected with the input of mixer I, and the circulator III is connected with the filter III, and the filter III is connected with the mixer I.
Between described circulator III and filter III, two-way communication is connected, and between filter III and mixer I, two-way communication is connected.
The output of described RX1 filter and RX2 filter is connected with the input of mixer II, and the circulator IV is connected with the filter IV, and the filter IV is connected with the mixer II.
Between described circulator IV and filter IV, two-way communication is connected, and between filter IV and mixer II, two-way communication is connected.
The effect that the utility model is useful is: the utility model structure utilizes MIMO to need the demand of the different antenna-feedback systems in independent 2 tunnels, the transmitting-receiving of FDD frequency range standard is separated, by different antennas, covered, thereby greatly reduce the index request of receive-transmit isolation and interchannel isolation, greatly reduce filter volume, the cost of POI.
The accompanying drawing explanation
Fig. 1 is conventional P OI theory diagram;
Fig. 2 is the utility model POI theory diagram;
Fig. 3 is that conventional P OI filter suppresses schematic diagram;
Fig. 4 is that the utility model POI filter suppresses schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in the figure, a kind of for multiband input and with the novel POI system of MIMO function, mainly comprise the radio frequency amplifying unit, POI-I and POI-II, it is characterized in that: the radio frequency amplifying unit comprises the TX1 power amplifier, the RX1 LNA, the TX2 power amplifier, the RX2 LNA, the TX3 power amplifier, the RX3 LNA, TX4 power amplifier and RX4 LNA, the POI-I comprises the TX1 filter, the TX2 filter, circulator III and filter III and mixer I, the POI-II comprises the RX1 filter, the RX2 filter, circulator IV and filter IV and mixer II, the output of TX1 power amplifier is connected with the input of TX1 filter, the output of RX1 filter is connected with the input of RX1 LNA, the output of TX2 power amplifier is connected with the input of TX2 filter, the output of RX2 filter is connected with the input of RX2 LNA, the output of TX3 power amplifier is connected with the input of circulator III, the output of circulator IV is connected with the input of RX3 LNA, the output of TX4 power amplifier is connected with the input of circulator IV, the output of circulator III is connected with the input of RX4 LNA, the mixer I is connected with the antenna I, the mixer II is connected with the antenna II.
The output of TX1 filter and TX2 filter is connected with the input of mixer I, the circulator III is connected with the filter III, the filter III is connected with the mixer I, and between circulator III and filter III, two-way communication is connected, and between filter III and mixer I, two-way communication is connected.The output of RX1 filter and RX2 filter is connected with the input of mixer II, the circulator IV is connected with the filter IV, the filter IV is connected with the mixer II, and between circulator IV and filter IV, two-way communication is connected, and between filter IV and mixer II, two-way communication is connected.
What on the antenna I, transmit is " frequency range 1TX+ frequency range 2TX+ frequency range 3 " signal, and what on the antenna II, transmit is " frequency range 1RX+ frequency range 2RX+ frequency range 3MIMO " signal.The utility model splits into two POI by original conventional P OI, only need to consider the TX1 filter in the POI-I, channel isolation between TX2 Filter and Filltering device III, only need to consider the RX1 filter in the POI-II, channel isolation between RX2 Filter and Filltering device IV, so Out-of-band rejection is compared conventional P OI and is required greatly to reduce, in addition for self frequency range receive-transmit isolation, at first at least there is 20～30dB isolation between antenna 1 and antenna 2, suppose the words of decay 15dB, need to add again the 30dB isolation, receive-transmit isolation at least can reduce the index request of 50～70dB, as shown in Figure 2, greatly reduce design difficulty and device cost.The POI-I realizes TX1, TX2 and TX3& Also transmit by the antenna I on the filtering ,He road of RX3, and the POI-II realizes RX1, RX2 and TX4& Also transmit by the antenna II on the filtering ,He road of RX4.
The POI-I is the filtering of frequency range TX1, the filtering of TX2, TX3 and RX3He road, filtering, and finally realize 3 kinds of frequency band signals He roads.The TX1 filter is realized the filtering of TX1, meets and TX2, TX3& Interchannel insulated degree requirement between RX3.The TX2 filter is realized the filtering of TX2, meets and TX1, TX3& Interchannel insulated degree requirement between RX3.The circulator III realizes the TDD band transmit and receives signal (TX3 and RX3) He road function.The filter III realizes the TDD band transmit and receives the filter function of signal (TX3 and RX3), meet and TX1, TX2 between the interchannel insulated degree requirement.The mixer I realizes TX1, TX2 and TX3& Tri-kinds of different frequency range He roads of RX3, thus can by the antenna I, be covered simultaneously.
The POI-II is the filtering of frequency range RX1, the filtering of RX2, TX4 and RX4He road, filtering, and finally realize 3 kinds of frequency band signals He roads.The RX1 filter is realized the filtering of RX1, meets and RX2, TX4& Interchannel insulated degree requirement between RX4.The RX2 filter is realized the filtering of RX2, meets and RX1, TX4& Interchannel insulated degree requirement between RX4.The circulator IV realizes that TDD frequency range MIMO transmits and receives signal (TX4 and RX4) He road function.The filter IV realizes that TDD frequency range MIMO transmits and receives the filter function of signal (TX4 and RX4), meet and RX1, RX2 between the interchannel insulated degree requirement.The mixer II realizes RX1, RX2 and TX4& Tri-kinds of different frequency range He roads of RX4, thus can by the antenna II, be covered simultaneously.
With frequency range 1(FDD standard), frequency range 2(FDD standard), frequency range 3(TDD standard), frequency range 4(TDD standard and frequently same with frequency range 3, realize the MIMO function) altogether 4 tunnels be example, POI-I in the utility model has realized that the emission of frequency range 1, the emission of frequency range 2 and the signal filtering ,He road of frequency range 3 cover to the antenna I, and the POI-II has realized that the reception of frequency range 1, the reception of frequency range 2 and the signal filtering ,He road of frequency range 4 cover to the antenna II.
In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of the utility model requirement.
Claims (5)
1. one kind for multiband input and with the novel POI system of MIMO function, mainly comprise the radio frequency amplifying unit, POI-I and POI-II, it is characterized in that: the radio frequency amplifying unit comprises the TX1 power amplifier, the RX1 LNA, the TX2 power amplifier, the RX2 LNA, the TX3 power amplifier, the RX3 LNA, TX4 power amplifier and RX4 LNA, the POI-I comprises the TX1 filter, the TX2 filter, circulator III and filter III and mixer I, the POI-II comprises the RX1 filter, the RX2 filter, circulator IV and filter IV and mixer II, the output of TX1 power amplifier is connected with the input of TX1 filter, the output of RX1 filter is connected with the input of RX1 LNA, the output of TX2 power amplifier is connected with the input of TX2 filter, the output of RX2 filter is connected with the input of RX2 LNA, the output of TX3 power amplifier is connected with the input of circulator III, the output of circulator IV is connected with the input of RX3 LNA, the output of TX4 power amplifier is connected with the input of circulator IV, the output of circulator III is connected with the input of RX4 LNA, the mixer I is connected with the antenna I, the mixer II is connected with the antenna II.
2. according to claim 1 for multiband input and with the novel POI system of MIMO function, it is characterized in that: the output of described TX1 filter and TX2 filter is connected with the input of mixer I, the circulator III is connected with the filter III, and the filter III is connected with the mixer I.
3. according to claim 2 for multiband input and with the novel POI system of MIMO function, it is characterized in that: between described circulator III and filter III, two-way communication is connected, and between filter III and mixer I, two-way communication is connected.
4. according to claim 1 for multiband input and with the novel POI system of MIMO function, it is characterized in that: the output of described RX1 filter and RX2 filter is connected with the input of mixer II, the circulator IV is connected with the filter IV, and the filter IV is connected with the mixer II.
5. according to claim 4 for multiband input and with the novel POI system of MIMO function, it is characterized in that: between described circulator IV and filter IV, two-way communication is connected, and between filter IV and mixer II, two-way communication is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320438921.7U CN203387500U (en) | 2013-07-18 | 2013-07-18 | Multi-band input-based novel POI system with multiple input multiple output (MIMO) function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320438921.7U CN203387500U (en) | 2013-07-18 | 2013-07-18 | Multi-band input-based novel POI system with multiple input multiple output (MIMO) function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401599A (en) * | 2013-07-18 | 2013-11-20 | 三维通信股份有限公司 | Novel POI system with MIMO (multiple input multiple output) function by aiming at multi-frequency-band input |
| CN107078369A (en) * | 2014-09-25 | 2017-08-18 | 株式会社村田制作所 | Front-end circuit and communicator |
| WO2017181940A1 (en) * | 2016-04-20 | 2017-10-26 | 深圳国人通信股份有限公司 | Power amplifier module supporting mimo technology |
-
2013
- 2013-07-18 CN CN201320438921.7U patent/CN203387500U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401599A (en) * | 2013-07-18 | 2013-11-20 | 三维通信股份有限公司 | Novel POI system with MIMO (multiple input multiple output) function by aiming at multi-frequency-band input |
| CN103401599B (en) * | 2013-07-18 | 2016-04-20 | 三维通信股份有限公司 | A kind of for multiband input and the novel POI system of band MIMO function |
| CN107078369A (en) * | 2014-09-25 | 2017-08-18 | 株式会社村田制作所 | Front-end circuit and communicator |
| WO2017181940A1 (en) * | 2016-04-20 | 2017-10-26 | 深圳国人通信股份有限公司 | Power amplifier module supporting mimo technology |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140108 Termination date: 20160718 |
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| CF01 | Termination of patent right due to non-payment of annual fee |