CN1968461A - Antenna feeder sharing method and system - Google Patents
Antenna feeder sharing method and system Download PDFInfo
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- CN1968461A CN1968461A CNA2006100813869A CN200610081386A CN1968461A CN 1968461 A CN1968461 A CN 1968461A CN A2006100813869 A CNA2006100813869 A CN A2006100813869A CN 200610081386 A CN200610081386 A CN 200610081386A CN 1968461 A CN1968461 A CN 1968461A
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Abstract
The invention relates to a common-feedback method and relative system, wherein said method comprises: a, sending signal via coupler to be coupled and transmitted to duplexer, to be transmitted to antenna via feeding line; b, receiving signal is transmitted to the duplexer via antenna and feeding line, via power distirubtted to be transmitted to the base station receiver/sender. Said system comprises base station receiver/sender, feeding line and antenna; coupler, duplexer and power distributor; the coupler couples and transmits the sending signal to the duplexer and antenna; the duplexer separates the sending and receiving signals; when the receiving signal is transmitted to duplexer from antenna, it is transmitted to the power distributor; the distributor distributes power of receiving signal and transmits it to the base station receiver/sender. The invention can reduce chain consumption.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of homologous ray antenna feeder sharing method and system.
Background technology
In the communication network, base station transceiver BTS (Base Station Transceiver) transmits and receives signal by antenna-feedback system.Antenna feeder is meant the shared cover antenna-feedback system of BTS altogether, can save cost of equipment and improve comprehensive benefit.Antenna feeder mainly can be divided into dual mode altogether, a kind of is different system antenna feeder altogether, is total to antenna feeder as global system for mobile communications GSM (global system for mobile communication) and Wideband Code Division Multiple Access (WCDMA) WCDMA (Wideband Code Division Multiple Access); A kind of is altogether antenna feeder of homology, is total to antenna feeder as code division multiple access CDMA (Code Division Multiple Access) 800M 1X and CDMA800M DO.Different system is antenna feeder scheme comparative maturity altogether, and is also fairly simple, generally adopts wideband mixer and wideband section antenna just can be total to antenna feeder, and adopts the mixer of low Insertion Loss, can be so that very little to the systematic function influence.
Along with the development of communication network, operator wishes the shared cover antenna feeder of the identical network system that the distinct device merchant is provided.Homology altogether antenna feeder can be brought certain deterioration to the performance of existing system, increases as the forward direction loss, and oppositely receiving sensitivity descends.Therefore, provide altogether antenna feeder solution of a complete homology, and existing system influence minimum is become a kind of urgent demand.
Adopting the 3dB electric bridge to be total to antenna feeder is a comparatively simple scheme that exists at present, its typical networking diagram such as Fig. 1:
BTS1 and BTS2 can be for the single-emission and double-receiving configuration or/and two two receipts configurations among the figure.Transmitting of BTS1 is as follows with the flow process of received signal:
As shown in Figure 1, BTS1 riches all the way penetrate signal and be transferred to 3dB electric bridge 1 port D1 from port B1 after, be transferred to transmitting of 3dB electric bridge 1 port D2 with BTS2 from port B4 and close the road, from the port D3 output of 3dB electric bridge 1, radiate to antenna ANT1 then along feeder line Cab1.The port D4 of 3dB electric bridge 1 connects load 1.
If BTS1 has another road to transmit, then transmit be transferred to 3dB electric bridge 2 port D5 from port B2 after, be transferred to transmitting of 3dB electric bridge 2 port D6 with BTS2 from port B3 and close the road, from the port D7 output of 3dB electric bridge 2, radiate to antenna ANT2 then along feeder line Cab2.The port D8 of 3dB electric bridge 2 connects load 2.
The signal that antenna receives is sent to 3dB electric bridge 1 and 3dB electric bridge 2 backs along feeder line and is sent to BTS1 by transmission channel separately or BTS2 receives from port.As antenna ANT1 received signal through feeder line Cab1 to 3dB electric bridge 1, D1 is sent to BTS1 from port, to 3dB electric bridge 2, D5 is sent to BTS1 to antenna ANT2 received signal from port through feeder line Cab2.
In like manner, BTS2 transmit and the flow process of received signal similar with transmitting of BTS1 with the flow process of received signal.
Adopt the 3dB electric bridge altogether the benefit of antenna feeder be exactly that networking is simple, cost is low, every sector only needs two 3dB electric bridges just much of that, it is fewer to be adapted at number of users, to require be not to use under the very high situation to covering.
But adopt the limitation of 3dB electric bridge to be:
Though 3dB electric bridge altogether antenna feeder networking is simple, because the device property of 3dB electric bridge own, what determined this networking mode precedingly oppositely all has an above loss of 3.0dB, and forward direction is covered and reverse reception all has bigger influence.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of antenna feeder sharing method and system, can support altogether antenna feeder of homology, and reduces link load.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of antenna feeder sharing method, comprising: 1) transmitting is sent to duplexer by after the coupler coupling, and is sent to antenna along feeder line; 2) received signal is sent to duplexer from antenna along feeder line, and by being sent to base station transceiver after the power division.
Further, described 1) comprises in that being sent to mixer after the coupling that transmits closes the road, is sent to duplexer again.
Further, described 2) comprise in before signal power is distributed and amplifying, and signal power is distributed after coupling of overcoupling device or attenuator decay are sent to base station transceiver then through signal.
Further, after described signal power is distributed, comprise through filtering being sent to the coupler coupling again.
Described base station transceiver comprises the single-emission and double-receiving configuration or/and two two receipts are disposed.
Described coupler is a directional coupler.
The invention provides a kind of co-space feedback system, comprise base station transceiver, feeder line and antenna, also comprise: coupler, duplexer and power divider; Coupler will be sent to duplexer after will transmitting and being coupled, and be sent to antenna along feeder line; Duplexer is used for emission and received signal are separated, and after received signal is sent to duplexer from antenna along feeder line, is sent to power divider; Power divider carries out power division with received signal, and is sent to base station transceiver.
Described system further comprises mixer, transmits to close the road by being sent to mixer after the coupler coupling, is sent to duplexer again.
Described system further comprises low noise amplifier, filter and attenuator; Before distributing, signal power, reaches the signal power distribution after wave filter filtering is sent to the coupler coupling again or signal power is distributed after the decay of overdamping device is sent to base station transceiver then through the low noise amplifier amplifying signal.
Described coupler is a directional coupler.
Above technical scheme as can be seen, the present invention has following beneficial effect:
At first, the shared cover antenna feeder of the identical network system that antenna feeder sharing method provided by the invention and system can support the distinct device merchant to provide, adopt general 3dB electric bridge antenna feeder sharing method with respect to prior art, the present invention is active networking mode, antenna-feedback system forward link and reverse link are all had greatly improved, forward link has reduced loss, and reverse link has reduced noise factor, and is very little to the existing network influence;
Secondly, antenna feeder sharing method provided by the invention and system can be at the different concrete configuration situations of base station transceiver, realize the different equipment of homologous ray antenna feeder altogether, and the present invention can support the upgrading that existing network is later, for example the configuration of existing network base station transceiver is a single-emission and double-receiving, upgrades to two two situations of receiving configuration etc. of sending out in the future;
In addition, during the base station transceiver receiving and transmitting signal, generally need to adopt duplexer that receiving and transmitting signal is separated, the present invention adopts directional coupler to replace duplexer, the coupler forward insertion loss has only 0.10dB, and the 0.30dB optimization than duplexer can reduce the forward link loss, cost be can effectively reduce again, module weight and volume alleviated.
Description of drawings
Fig. 1 is a prior art 3dB electric bridge antenna feeder networking schematic diagram altogether;
Fig. 2 is the flow chart of antenna feeder sharing method signal emission of the present invention;
Fig. 3 is the flow chart that antenna feeder sharing method signal of the present invention receives;
Fig. 4 is that antenna feeder sharing method of the present invention is the schematic diagram of two single-emission and double-receivings configuration at base station transceiver;
Fig. 5 is that antenna feeder sharing method of the present invention is single-emission and double-receiving, two two schematic diagrames of receiving configuration at base station transceiver;
Fig. 6 is that antenna feeder sharing method of the present invention is two pairs of schematic diagrames of sending out two receipts configurations at base station transceiver;
Fig. 7 is that antenna feeder sharing method of the present invention is two single-emission and double-receivings configuration a upgrading schematic diagram at base station transceiver;
Fig. 8 is that antenna feeder sharing method of the present invention is that single-emission and double-receiving, two two receipts are disposed the schematic diagram of upgrading at base station transceiver;
Fig. 9 is that antenna feeder sharing method of the present invention is that two pairs two receipts are disposed the schematic diagrames of upgrading at base station transceiver;
Figure 10 is a co-space feedback system schematic diagram of the present invention.
Embodiment
The invention provides a kind of antenna feeder sharing method and system, its core concept is: 1) transmitting is sent to duplexer by after the coupler coupling, and is sent to antenna along feeder line; 2) received signal is sent to duplexer from antenna along feeder line, and by being sent to base station transceiver after the power division.
Single-emission and double-receiving of the present invention is meant two antennas (a secondary dual polarized antenna) of same sector in the communication system, and one is transmit-receive sharing, and another is done diversity reception and uses; Described two pair receipts of sending out are meant that two antennas of same sector all are transmit-receive sharings.Base station transceiver of the present invention can be to be provided by the distinct device merchant.
The present invention relates to lower member: duplexer (Duplexer), be used for emission and received signal are separated, between emission and the reception certain inhibition degree is arranged, provide transmit, the connectivity port of received signal and feeder line; Directional coupler (Directional coupler) is used for and will be sent to mixer or duplexer after the coupling that transmit, and will be sent to base station transceiver after the received signal coupling; Low noise amplifier (Low noiseamplifier is called for short LNA) is used for received signal is amplified, and compensation power distributes loss and coupling loss, improves the noise factor of receive path; Filter (Filter) is used to suppress to be leaked to transmitting of receive path by coupler; Mixer (Combiner), be used for will emission two frequencies close the emission port that outputs to duplexer behind the road; Attenuator (Attenuator) is used for the LNA amplifying signal is decayed, and makes the signal of falling receiver in certain dynamic range; Power divider (Divider) is used for the power division of signal, and power is divided into two.
For the ease of the present invention is further understood, describe the present invention below in conjunction with drawings and Examples.
Seeing also Fig. 2, is the flow chart of antenna feeder sharing method signal emission of the present invention, comprises step:
S21) base station transceiver transmits;
S22) signal is sent to the coupler coupling;
S23) be sent to after the signal coupling and be sent to mixer after duplexer or the coupling and close the road and be sent to duplexer again;
S24) transmit and be sent to aerial radiation along feeder line and go out.
Seeing also Fig. 3, is the flow chart that antenna feeder sharing method signal of the present invention receives, and comprises step:
S31) antenna receiving signal;
S32) signal is sent to duplexer along feeder line;
S33) signal amplifies and power divider distribution power through low noise amplifier;
S34) signal is through filter filtering and be sent to coupler coupling or signal is decayed through attenuator;
S35) signal is sent to base station transceiver and receives.
Seeing also Fig. 4, is that antenna feeder sharing method of the present invention is the schematic diagram of two single-emission and double-receivings configuration at base station transceiver.
Fig. 4 sector situation of only drawing, other sector situations are similar.BTS1 and BTS2 all are single-emission and double-receiving configurations.Comprise among the figure as lower member: base station transceiver, feeder line, antenna, duplexer, low noise amplifier, power divider, directional coupler, filter, attenuator.
1, base station transceiver BTS1 signal transmits and receives as described below:
Transmit and be sent to the port p1 of directional coupler Cp1 from the port B1 of BTS1 through transmission line, and be sent to the emission port Tx1 of duplexer Dp1 from the port p2 of Cp1, through the feeder line port An1 of Dp1 output, and pass to poliarizing antenna ANT1 along feeder line Cab1 and radiate.
The main collection signal that poliarizing antenna ANT1 receives, be sent to the An1 mouth of duplexer Dp1 along feeder line Cab1, receiving port Rx1 output from Dp1, amplify by low noise amplifier La1, power divider Dv1 distributes power, wherein one road signal passes to the port p3 of directional coupler Cp1 through filter Ft1, and the coupling back is sent to the interface B1 of BTS1 from the port p1 of Cp1 by transmission line, is received by BTS1.
The diversity signal that poliarizing antenna ANT2 receives, be sent to the An2 mouth of duplexer Dp2 along feeder line Cab2, receiving port Rx2 output from Dp2, amplify by low noise amplifier La2, power divider Dv2 distributes power, wherein one road signal is after attenuator At1 decay, is sent to the interface B2 of BTS1 by transmission line, received by BTS1.
Need to prove that main collection, diversity signal that antenna described herein receives are relative.
2, base station transceiver BTS2 signal transmits and receives as described below:
Transmit and be sent to the port p4 of directional coupler Cp2 from the port B3 of BTS2 through transmission line, and be sent to the emission port Tx2 of duplexer Dp2 from the port p5 of Cp2, through the feeder line port An2 of Dp1 output, and pass to poliarizing antenna ANT2 along feeder line Cab2 and radiate.
The main collection signal that poliarizing antenna ANT1 receives, be sent to the An1 mouth of duplexer Dp1 along feeder line Cab1, receiving port Rx1 output from Dp1, amplify by low noise amplifier La1, power divider Dv1 distributes power, wherein one road signal passes to the port p6 of directional coupler Cp2 through filter Ft2, and the coupling back is sent to the interface B3 of BTS2 from the port p4 of Cp2 by transmission line, is received by BTS2.
The diversity signal that poliarizing antenna ANT2 receives, be sent to the An2 mouth of duplexer Dp2 along feeder line Cab2, receiving port Rx2 output from Dp2, amplify by low noise amplifier La2, power divider Dv2 distributes power, wherein one road signal is after attenuator At2 decay, is sent to the interface B4 of BTS2 by transmission line, received by BTS2.
Need to prove that main collection, diversity signal that antenna described herein receives are relative.
Need to prove, in this figure, during received signal, also can be that signal passes through low noise amplifier La1 amplification, after power divider Dv1 distributes power, wherein one road signal is sent to BTS1 after filter Ft1 passes to directional coupler Cp1 coupling, and another road signal is sent to BTS2 after attenuator At2 decay; Signal amplifies by low noise amplifier La2, and after power divider Dv2 distributed power, wherein one road signal was sent to BTS2 after filter Ft2 passes to directional coupler Cp2 coupling, and another road signal is sent to BTS1 after attenuator At1 decay.
Seeing also Fig. 5, is that antenna feeder sharing method of the present invention is single-emission and double-receiving, two two schematic diagrames of receiving configuration at base station transceiver.
Fig. 5 sector situation of only drawing, other sector situations are similar.BTS1 is two two configurations of receiving of sending out, and BTS2 is the single-emission and double-receiving configuration.Comprise among the figure as lower member: base station transceiver, feeder line, antenna, duplexer, low noise amplifier, power divider, mixer, directional coupler, filter, attenuator.
1, the BTS1 signal transmits and receives as described below:
Riches all the way penetrates signal is sent to directional coupler Cp1 through transmission line from the port B1 of BTS1 port p1, and be sent to the emission port Tx1 of duplexer Dp1 from the port p2 of Cp1, through the feeder line port An1 of Dp1 output, and pass to poliarizing antenna ANT1 along feeder line Cab1 and radiate.
Another road transmits and is sent to the port p4 of directional coupler Cp2 from the port B2 of BTS1 through transmission line, and after passing to the port f1 of mixer Cb1 from the port p5 of Cp2, with BTS2 from its port B3 through directional coupler Cp3 coupling pass to transmitting of mixer Cb1 port f2 and close the road, be sent to the emission port Tx2 of duplexer Dp2 then from the port f3 of Cb1, through the feeder line port An2 of Dp2 output, and pass to poliarizing antenna ANT2 along feeder line Cab2 and radiate.
The main collection signal that poliarizing antenna ANT1 receives, be sent to the An1 mouth of duplexer Dp1 along feeder line Cab1, receiving port Rx1 output from Dp1, amplify by low noise amplifier La1, power divider Dv1 distributes power, wherein one road signal passes to the port p3 of directional coupler Cp1 through filter Ft1, and the coupling back is sent to the interface B1 of BTS1 from the port p1 of Cp1 by transmission line, is received by BTS1.
The diversity signal that poliarizing antenna ANT2 receives, be sent to the An2 mouth of duplexer Dp2 along feeder line Cab2, receiving port Rx2 output from Dp2, amplify by low noise amplifier La2, power divider Dv2 distributes power, wherein one road signal passes to the port p6 of directional coupler Cp2 through filter Ft2, and the coupling back is sent to the interface B2 of BTS1 from the port p4 of Cp2 by transmission line, is received by BTS1.
Need to prove that main collection, diversity signal that antenna described herein receives are relative.
2, the BTS2 signal transmits and receives as described below:
Transmit and be sent to the port p7 of directional coupler Cp3 from the port B3 of BTS2 through transmission line, and after passing to the port f2 of mixer Cb1 from the port p8 of Cp3, with BTS1 from its port B2 through directional coupler Cp2 coupling pass to transmitting of mixer Cb1 port f1 and close the road, be sent to the emission port Tx2 of duplexer Dp2 then from the port f3 of Cb1, through the feeder line port An2 of Dp2 output, and pass to poliarizing antenna ANT2 along feeder line Cab2 and radiate.
The main collection signal that poliarizing antenna ANT1 receives, be sent to the An1 mouth of duplexer Dp1 along feeder line Cab1, receiving port Rx1 output from Dp1, amplify by low noise amplifier La1, power divider Dv1 distributes power, wherein one road signal passes to the port p9 of directional coupler Cp3 through filter Ft3, and the coupling back is sent to the interface B3 of BTS1 from the port p7 of Cp3 by transmission line, is received by BTS2.
The diversity signal that poliarizing antenna ANT2 receives, be sent to the An2 mouth of duplexer Dp2 along feeder line Cab2, receiving port Rx2 output from Dp2, amplify by low noise amplifier La2, power divider Dv2 distributes power, wherein one road signal is after attenuator At1 decay, is sent to the interface B4 of BTS2 by transmission line, received by BTS2.
Need to prove that main collection, diversity signal that antenna described herein receives are relative.
Need to prove, closing transmitting behind the road shown in the figure also can be to be sent to duplexer Dp1 from mixer Cb1 to launch, the f3 mouth of mixer Cb1 is received the emission port Tx1 of duplexer Dp1, through the feeder line port An1 of Dp1 output, and pass to poliarizing antenna ANT1 along feeder line Cab1 and radiate.
Need to prove, in this figure, during received signal, also can be that signal passes through low noise amplifier La1 amplification, after power divider Dv1 distributes power, wherein one road signal is sent to BTS1 after filter Ft1 passes to directional coupler Cp1 coupling, and another road signal is sent to BTS2 after attenuator At1 decay; Signal amplifies by low noise amplifier La2, after power divider Dv2 distributes power, wherein one road signal is sent to BTS1 after filter Ft2 passes to directional coupler Cp2 coupling, and another road signal is sent to BTS2 after filter Ft3 passes to directional coupler Cp3 coupling.
Seeing also Fig. 6, is that antenna feeder sharing method of the present invention is two pairs of schematic diagrames of sending out two receipts configurations at base station transceiver.
Fig. 6 sector situation of only drawing, other sector situations are similar.BTS1, BTS2 all are two two configurations of receiving of sending out.Comprise among the figure as lower member: base station transceiver, feeder line, antenna, duplexer, low noise amplifier, power divider, directional coupler, filter, mixer.
1, the BTS1 signal transmits and receives as described below:
Riches all the way penetrates signal is sent to directional coupler Cp1 through transmission line from the port B1 of BTS1 port p1, and after passing to the port f1 of mixer Cb1 from the port p2 of Cp1, with BTS2 from its port B3 through directional coupler Cp3 coupling pass to transmitting of mixer Cb1 port f2 and close the road, be sent to the emission port Tx1 of duplexer Dp1 then from the port f3 of Cb1, through the feeder line port An1 of Dp1 output, and pass to poliarizing antenna ANT1 along feeder line Cab1 and radiate.
Another road transmits and is sent to the port p4 of directional coupler Cp2 from the port B2 of BTS1 through transmission line, and after passing to the port f4 of mixer Cb2 from the port p5 of Cp2, with BTS2 from its port B4 through directional coupler Cp4 coupling pass to transmitting of mixer Cb2 port f5 and close the road, be sent to the emission port Tx2 of duplexer Dp2 then from the port f6 of Cb2, through the feeder line port An2 of Dp2 output, and pass to poliarizing antenna ANT2 along feeder line Cab2 and radiate.
The main collection signal that poliarizing antenna ANT1 receives, be sent to the An1 mouth of duplexer Dp1 along feeder line Cab1, receiving port Rx1 output from Dp1, amplify by low noise amplifier La1, power divider Dv1 distributes power, wherein one road signal passes to the port p3 of directional coupler Cp1 through filter Ft1, and the coupling back is sent to the interface B1 of BTS1 from the port p1 of Cp1 by transmission line, is received by BTS1.
The diversity signal that poliarizing antenna ANT2 receives, be sent to the An2 mouth of duplexer Dp2 along feeder line Cab2, receiving port Rx2 output from Dp2, amplify by low noise amplifier La2, power divider Dv2 distributes power, wherein one road signal passes to the port p6 of directional coupler Cp2 through filter Ft2, and the coupling back is sent to the interface B2 of BTS1 from the port p4 of Cp2 by transmission line, is received by BTS1.
Need to prove that main collection, diversity signal that antenna described herein receives are relative.
2, the BTS2 signal transmits and receives as described below:
Riches all the way penetrates signal is sent to directional coupler Cp3 through transmission line from the port B3 of BTS2 port p7, and after passing to the port f2 of mixer Cb1 from the port p8 of Cp3, with BTS1 from its port B1 through directional coupler Cp1 coupling pass to transmitting of mixer Cb1 port f1 and close the road, be sent to the emission port Tx1 of duplexer Dp1 then from the port f3 of Cb1, through the feeder line port An1 of Dp1 output, and pass to poliarizing antenna ANT1 along feeder line Cab1 and radiate.
Another road transmits and is sent to the port p10 of directional coupler Cp4 from the port B4 of BTS2 through transmission line, and after being sent to the port f5 of mixer Cb2 from the port p11 of Cp4, with BTS1 from its port B2 through directional coupler Cp2 coupling pass to transmitting of mixer Cb2 port f4 and close the road, be sent to the emission port Tx2 of duplexer Dp2 then from the port f6 of Cb2, through the feeder line port An2 of Dp2 output, and pass to poliarizing antenna ANT2 along feeder line Cab2 and radiate.
The main collection signal that poliarizing antenna ANT1 receives, be sent to the An1 mouth of duplexer Dp1 along feeder line Cab1, receiving port Rx1 output from Dp1, amplify by low noise amplifier La1, power divider Dv1 distributes power, wherein one road signal passes to the port p9 of directional coupler Cp3 through filter Ft3, and the coupling back is sent to the interface B3 of BTS2 from the port p7 of Cp1 by transmission line, is received by BTS2.
The diversity signal that poliarizing antenna ANT2 receives, be sent to the An2 mouth of duplexer Dp2 along feeder line Cab2, receiving port Rx2 output from Dp2, amplify by low noise amplifier La2, power divider Dv2 distributes power, wherein one road signal passes to the port p12 of directional coupler Cp4 through filter Ft4, and the coupling back is sent to the interface B4 of BTS2 from the port p10 of Cp2 by transmission line, is received by BTS2.
Need to prove that main collection, diversity signal that antenna described herein receives are relative.
More than be 3 kinds of situations, in practice, consider the needs of upgrading in the future, the invention provides a kind of preferable implementation method of supporting 3 kinds of utilization scenes at the different configurations of BTS.This implementation method is reserved 6 mixer positions earlier.
Seeing also Fig. 7, is that antenna feeder sharing method of the present invention is two single-emission and double-receivings configuration a upgrading schematic diagram at base station transceiver.
As shown in Figure 7, BTS1 and BTS2 are the single-emission and double-receiving configuration.Have 12 directional coupler Cp1 among the figure to Cp12,6 load Ld1 are to Ld6, and 6 low noise amplifier La1 are to La6, and 6 power divider Dv1 are to Dv6, and 6 duplexer Dp1 are to Dp6, and 12 filter Ft1 are to Ft12.
The sensible line segment together of figure acceptance of the bid joins, and the coupler of inactivity output connects matched load.BTS1 is connected to Cp6 with directional coupler Cp1, and BTS2 is connected to Cp12 with directional coupler Cp7.Directional coupler Cp1 one end is connected with the sign port TX11 of duplexer Dp1, and the other end is connected with the sign port RX11A of filter Ft1.Directional coupler Cp2 one end is connected with the sign port L1 of load Ld1, and the other end is connected with the sign port RX12A of filter Ft3.Directional coupler Cp7 one end is connected with the sign port TX12 of duplexer Dp2, and the other end is connected with the sign port RX11B of filter Ft2.Directional coupler Cp8 one end is connected with the sign port L4 of load Ld4, and the other end is connected with the sign port RX12B of filter Ft4.Filter Ft1 is connected with power divider Dv1 with Ft2 simultaneously, and Dv1 then connects low noise amplifier La1.Filter Ft3 is connected with power divider Dv2 with Ft4 simultaneously, and Dv2 then connects low noise amplifier La2.Low noise amplifier La1 is connected with the sign port RX11 of duplexer Dp1, and low noise amplifier La2 is connected with the sign port RX12 of duplexer Dp2.
In like manner, to Cp12, filter Ft5 is to Ft12 to Cp6, Cp9 for directional coupler Cp3, and power divider Dv3 is to Dv6, and low noise amplifier La3 is to La6, and duplexer Dp3 is to Dp6, and the situation that is connected and the above-mentioned situation of load Ld2, Ld3, Ld5 and Ld6 are similar.
It is that two single-emission and double-receivings dispose described signal and move towards similar that signal trend and the described situation of Fig. 4 that base station transceiver BTS1 and BTS2 signal transmit and receive among Fig. 7 worked as base station transceiver, flow process is also similar, different is replaces attenuator with the coupler of a termination matched load, and the purpose of doing like this is in order to upgrade conveniently.Here, coupler also can make received signal can not surpass certain dynamic range decaying through amplifying signal.
Seeing also Fig. 8, is that antenna feeder sharing method of the present invention is that single-emission and double-receiving, two two receipts are disposed the schematic diagram of upgrading at base station transceiver.
As shown in Figure 8, BTS1 is two two configurations of receiving of sending out, and BTS2 is the single-emission and double-receiving configuration.Have 12 directional coupler Cp1 among the figure to Cp12,6 load Ld1 are to Ld6, and 6 low noise amplifier La1 are to La6, and 6 power divider Dv1 are to Dv6, and 6 duplexer Dp1 are to Dp6, and 12 filter Ft1 are to Ft12, and 3 mixer Cb1 are to Cb3.Compare with the described situation of Fig. 7, increased by 3 mixer Cb1, be placed between directional coupler and the duplexer and connect to Cb3.
The sensible line segment together of figure acceptance of the bid joins, and the coupler of inactivity output connects matched load.BTS1 is connected to Cp6 with directional coupler Cp1, and BTS2 is connected to Cp12 with directional coupler Cp7.Directional coupler Cp1 one end is connected with the sign port TX11 of duplexer Dp1, and the other end is connected with the sign port RX11A of filter Ft1.Directional coupler Cp2 one end is connected with the sign port TX12A of mixer Cb1, and the other end is connected with the sign port RX12A of filter Ft3.Directional coupler Cp7 one end is connected with the sign port TX12B of mixer Cb1, and the other end is connected with the sign port RX11B of filter Ft2.Directional coupler Cp8 one end is connected with the sign port L4 of load Ld4, and the other end is connected with the sign port RX12B of filter Ft4.Filter Ft1 is connected with power divider Dv1 with Ft2 simultaneously, and Dv1 then connects low noise amplifier La1.Filter Ft3 is connected with power divider Dv2 with Ft4 simultaneously, and Dv2 then connects low noise amplifier La2.Low noise amplifier La1 is connected with the sign port RX11 of duplexer Dp1, and low noise amplifier La2 is connected with the sign port RX12 of duplexer Dp2.Mixer Cb1 is connected with the sign port TX12 of duplexer Dp2.
In like manner, to Cp12, filter Ft5 is to Ft12 to Cp6, Cp9 for directional coupler Cp3, and power divider Dv3 is to Dv6, and low noise amplifier La3 is to La6, and duplexer Dp3 is to Dp6, mixer Cb2 and Cb3, and the situation that is connected and the above-mentioned situation of load Ld5 and Ld6 are similar.
The signal trend that base station transceiver BTS1 and BTS2 signal transmit and receive among Fig. 8 and the described situation of Fig. 5 when base station transceiver be that two receipts of single-emission and double-receiving, two disposed described signals and moved towards similar, flow process is also similar.
Seeing also Fig. 9, is that antenna feeder sharing method of the present invention is that two pairs two receipts are disposed the schematic diagrames of upgrading at base station transceiver.
As shown in Figure 9, BTS1 and BTS2 are two two configurations of receiving of sending out.Have 12 directional coupler Cp1 among the figure to Cp12,6 load Ld1 are to Ld6, and 6 low noise amplifier La1 are to La6, and 6 power divider Dv1 are to Dv6, and 6 duplexer Dp1 are to Dp6, and 12 filter Ft1 are to Ft12, and 6 mixer Cb1 are to Cb6.Compare with the described situation of Fig. 7, increased by 6 mixer Cb1, be placed between directional coupler and the duplexer and connect to Cb6.
The sensible line segment together of figure acceptance of the bid joins, and the coupler of inactivity output connects matched load.BTS1 is connected to Cp6 with directional coupler Cp1, and BTS2 is connected to Cp12 with directional coupler Cp7.Directional coupler Cp1 one end is connected with the sign port TX11A of mixer Cb4, and the other end is connected with the sign port RX11A of filter Ft1.Directional coupler Cp2 one end is connected with the sign port TX12A of mixer Cb1, and the other end is connected with the sign port RX12A of filter Ft3.Directional coupler Cp7 one end is connected with the sign port TX12B of mixer Cb1, and the other end is connected with the sign port RX11B of filter Ft2.Directional coupler Cp8 one end is connected with the sign port TX11B of mixer Cb4, and the other end is connected with the sign port RX12B of filter Ft4.Filter Ft1 is connected with power divider Dv1 with Ft2 simultaneously, and Dv1 then connects low noise amplifier La1.Filter Ft3 is connected with power divider Dv2 with Ft4 simultaneously, and Dv2 then connects low noise amplifier La2.Low noise amplifier La1 is connected with the sign port RX11 of duplexer Dp1, and low noise amplifier La2 is connected with the sign port RX12 of duplexer Dp2.Mixer Cb1 is connected with the sign port TX12 of duplexer Dp2, and mixer Cb4 is connected with the sign port TX11 of duplexer Dp1.
In like manner, to Cp12, filter Ft5 is to Ft12 to Cp6, Cp9 for directional coupler Cp3, and power divider Dv3 is to Dv6, and low noise amplifier La3 is to La6, and duplexer Dp3 is to Dp6, and the situation that is connected and the above-mentioned situation of mixer Cb2, Cb3, Cb5 and Cb6 are similar.
Base station transceiver BTS1 moves towards similar to the described situation of Fig. 6 when base station transceiver is two two described signals of configuration of receiving with the signal trend that the BTS2 signal transmits and receives among Fig. 9, and flow process is also similar.
More than the inventive method is introduced, the influence of the present invention to existing network is described below.
Influence to forward link:
1, mixer loss:
With the present CDMA2000 of UNICOM is example, and 1X network using 201,283 frequencies, 201,283 frequencies are respectively by the different antennae transmitting power.DO network using multicarrier system is launched 37, No. 78 frequency, and 37, No. 78 frequency is launched by same antenna opening.Therefore can design a mixer, with Fig. 5 base station transceiver BTS1 serves as two to send out that two to receive configuration, BTS2 be that to dispose corresponding scheme be example to single-emission and double-receiving, the frequency that the f1 port of mixer Cb1 passes through is 201,283, the f2 port is by 37, No. 78 frequencies, adopts 37,78 frequencies with frequency in 201,283 and DO network to close the road in actual use.Like this, adopt the scheme of Fig. 5 just can realize that 1X, the DO network shared of CDMA overlaps antenna feeder.Two passages of mixer all adopt 3 joint cavity body filters to realize, can insert loss＜0.7dB so that the isolation between the passage reaches 28dB.
2, the transmission channel of duplexer inserts loss:
With present UNICOM cdma network is example, and transmit frequency band is 869～894MHZ, and duplexer adopts 3 joint cavity body filters, under the situation of quality factor Q value 3000 just can so that the insertion loss of transmission channel less than 0.3dB.
3, coupler loss: the loss of coupler is pressed 0.1dB and is calculated.
Based on above-mentioned analysis, with Fig. 5 base station transceiver BTS1 serve as two send out two receive configuration, BTS2 be single-emission and double-receiving to dispose corresponding scheme be example, the forward insertion loss that existing network BTS1 increases is:
Forward insertion loss=-gain of coupler gain-mixer gain-duplexer, promptly
TX
insertionl oss＝-Gain
coupler-Gain
combiner-Gain
Duplexer＝0.10+0.7+0.3＝1.1dB
Being single-emission and double-receiving with Fig. 4 base station transceiver BTS1 and BTS2, to dispose corresponding scheme be example, and the forward insertion loss that existing network BTS1 increases is:
Forward insertion loss=-gain of coupler gain-duplexer, promptly
TX
insertionl oss＝-Gain
coupler-Gain
Duplexer＝0.10+0.3＝0.40dB
As seen, be two two configurations of receiving of sending out as existing network, scheme provided by the invention only increases the forward direction loss of 1.1dB, is the single-emission and double-receiving configuration as existing network, then only increases the loss of 0.40dB.
Influence to reverse link:
With Fig. 5 base station transceiver BTS1 serve as two send out two receive configuration, BTS2 be single-emission and double-receiving to dispose corresponding scheme be example, do following hypothesis earlier:
| Duplexer Duplexer | Low noise amplifier LNA | Power divider Divider | Filter Filter | Coupler Coupler | Existing network base station transceiver Existing BTS | |
| Gain/loss Gain/loss (dB) | -0.4 | 27 | -3.2 | -0.4 | -20 | 30 |
| Gain (linear expression) Gain (linner) | 0.912 | 501.187 | 0.479 | 0.912 | 0.01 | 1000 |
| Noise factor NF (dB) | 0.4 | 1 | 3.2 | 0.4 | 20 | 5 |
| Noise factor (linear expression) NF (linner) | 1.1 | 1.259 | 2.089 | 1.097 | 100 | 3.162 |
According to formula
Can get
NF(dB)＝10*log10(2.9654)＝4.71dB
The noise factor that can calculate reverse link is 4.71dB, compares with the noise factor of existing network 5dB, and noise factor has optimization.
The invention provides a kind of co-space feedback system, see also Figure 10, is co-space feedback system schematic diagram provided by the present invention.
Base station transceiver is used to transmit and receive signal; Coupler is used for coupled signal, is sent to duplexer or mixer after coupler will transmit coupling, when received signal, will be sent to base station transceiver after the signal coupling; Mixer is used for the different frequent points signal is closed the road and is sent to duplexer; Duplexer is used for emission and received signal are separated, and when transmitting, signal is exported from duplexer, and is sent to aerial radiation along feeder line and goes out, and during received signal, signal outputs to low noise amplifier from antenna after feeder line is sent to duplexer; Low noise amplifier is used for the received signal amplification is sent to power divider, and can distribute loss and coupling loss by compensation power; Power divider is used for and will carries out power division through the received signal of amplifying, and is sent to filter or attenuator; Filter is used for signal is carried out filtering, and is sent to coupler and is coupled, and filter can suppress to be leaked to by coupler the transmitting power of receive path; Attenuator is used for deamplification, will decay through the low noise amplifier amplifying signal, makes the signal that is sent to base station transceiver in certain dynamic range.Coupler of the present invention is preferably directional coupler.
To transmit and receive flow process as described below for the signal of system among Figure 10:
Riches all the way penetrates signal and be sent to duplexer 80 outputs through coupler 20 coupling for base station transceiver 10, and pass to antenna 92 along feeder line 90 and radiate, another road transmits after mixer 70 is passed in coupler 21 couplings, the signal that passes to mixer 70 with 22 couplings of base station transceiver 11 process couplers closes the road, be sent to duplexer 81 then, and pass to antenna 93 along feeder line 91 and radiate.
Transmitting after mixer 70 is passed in coupler 22 couplings of base station transceiver 20, the signal that passes to mixer 70 with 21 couplings of base station transceiver 10 process couplers closes the road, be sent to duplexer 81 then, and pass to antenna 93 along feeder line 91 and radiate.
The signal that antenna 92 receives, be sent to duplexer 80 along feeder line 90, amplify by low noise amplifier 60 again, after power divider 50 distributes power, wherein one road signal passes to coupler 20 and is sent to base station transceiver 10 through filter 30 and receives, and another road signal passes to coupler 22 and is sent to base station transceiver 11 through filter 32 and receives.
The signal that antenna 93 receives, be sent to duplexer 81 along feeder line 91, amplify by low noise amplifier 61 again, after power divider 51 distributes power, wherein one road signal passes to coupler 21 and is sent to base station transceiver 10 through filter 31 and receives, and another road signal is through attenuator 40 decay and be sent to base station transceiver 11 receptions.
Need to prove, situation shown in Figure 10 is wherein a kind of network construction form of co-space feedback system of the present invention, co-space feedback system of the present invention is not limited thereto network construction form, according to the inventive method, when base station transceiver be single-emission and double-receiving configuration or/and two two when receiving configuration, co-space feedback system of the present invention can have other network construction forms.
More than a kind of antenna feeder sharing method provided by the present invention and system are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1, a kind of antenna feeder sharing method is characterized in that:
1) transmits and be sent to duplexer, and be sent to antenna along feeder line by after the coupler coupling;
2) received signal is sent to duplexer from antenna along feeder line, and by being sent to base station transceiver after the power division.
2, antenna feeder sharing method as claimed in claim 1 is characterized in that:
Described 1) is sent to mixer and closes the road after comprising the coupling that transmits in, be sent to duplexer again.
3, antenna feeder sharing method as claimed in claim 1 or 2 is characterized in that:
Described 2) comprise in before signal power is distributed and amplifying, and signal power is distributed after coupling of overcoupling device or attenuator decay are sent to base station transceiver then through signal.
4, antenna feeder sharing method as claimed in claim 3 is characterized in that:
After described signal power is distributed, comprise through filtering being sent to the coupler coupling again.
5, antenna feeder sharing method as claimed in claim 4 is characterized in that:
Described base station transceiver comprises the single-emission and double-receiving configuration or/and two two receipts are disposed.
6, antenna feeder sharing method as claimed in claim 5 is characterized in that:
Described coupler is a directional coupler.
7, a kind of co-space feedback system comprises base station transceiver, feeder line and antenna, it is characterized in that:
Also comprise coupler, duplexer and power divider; Coupler will be sent to duplexer after will transmitting and being coupled, and be sent to antenna along feeder line; Duplexer is used for emission and received signal are separated, and after received signal is sent to duplexer from antenna along feeder line, is sent to power divider; Power divider carries out power division with received signal, and is sent to base station transceiver.
8, co-space feedback system as claimed in claim 7 is characterized in that:
Further comprise mixer, transmit and close the road, be sent to duplexer again by being sent to mixer after the coupler coupling.
9, as claim 7 or 8 described co-space feedback systems, it is characterized in that:
Further comprise low noise amplifier, filter and attenuator; Before distributing, signal power, reaches the signal power distribution after wave filter filtering is sent to the coupler coupling again or signal power is distributed after the decay of overdamping device is sent to base station transceiver then through the low noise amplifier amplifying signal.
10, co-space feedback system as claimed in claim 9 is characterized in that:
Described coupler is a directional coupler.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008145037A1 (en) * | 2007-05-24 | 2008-12-04 | Huawei Technologies Co., Ltd. | A feed network device, aerial feed subsystem and base station system |
| US7839235B2 (en) | 2007-05-24 | 2010-11-23 | Huawei Technologies Co., Ltd. | Feed network device, antenna feeder subsystem, and base station system |
| CN101600269B (en) * | 2009-06-30 | 2011-06-08 | 华为技术有限公司 | Device, system and method for sharing antenna feeder |
| CN103368588A (en) * | 2012-03-28 | 2013-10-23 | 中兴通讯股份有限公司 | Base station uplink external interference processing method, base station uplink external interference processing apparatus and base station uplink external interference processing system |
| CN103972629A (en) * | 2014-04-14 | 2014-08-06 | 上海华为技术有限公司 | Combiner, base station, signal combining system and signal transmission method |
| CN108550978A (en) * | 2018-04-16 | 2018-09-18 | 维沃移动通信有限公司 | A kind of antenna system and mobile terminal |
| CN114039179A (en) * | 2021-09-29 | 2022-02-11 | 电子科技大学长三角研究院(湖州) | Terahertz active quasi-circulator based on CMOS (complementary Metal oxide semiconductor) process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008145037A1 (en) * | 2007-05-24 | 2008-12-04 | Huawei Technologies Co., Ltd. | A feed network device, aerial feed subsystem and base station system |
| US7839235B2 (en) | 2007-05-24 | 2010-11-23 | Huawei Technologies Co., Ltd. | Feed network device, antenna feeder subsystem, and base station system |
| CN101600269B (en) * | 2009-06-30 | 2011-06-08 | 华为技术有限公司 | Device, system and method for sharing antenna feeder |
| CN103368588A (en) * | 2012-03-28 | 2013-10-23 | 中兴通讯股份有限公司 | Base station uplink external interference processing method, base station uplink external interference processing apparatus and base station uplink external interference processing system |
| CN103972629A (en) * | 2014-04-14 | 2014-08-06 | 上海华为技术有限公司 | Combiner, base station, signal combining system and signal transmission method |
| CN108550978A (en) * | 2018-04-16 | 2018-09-18 | 维沃移动通信有限公司 | A kind of antenna system and mobile terminal |
| CN114039179A (en) * | 2021-09-29 | 2022-02-11 | 电子科技大学长三角研究院(湖州) | Terahertz active quasi-circulator based on CMOS (complementary Metal oxide semiconductor) process |
| CN114039179B (en) * | 2021-09-29 | 2022-05-27 | 电子科技大学长三角研究院(湖州) | Terahertz active quasi-circulator based on CMOS (complementary Metal oxide semiconductor) process |
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| CN100574479C (en) | 2009-12-23 |
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