CN106302276B - Mobile terminal and received signal processing system and method thereof - Google Patents
Mobile terminal and received signal processing system and method thereof Download PDFInfo
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Abstract
A mobile terminal and a received signal processing system and method thereof, wherein the processing system comprises: the filter is suitable for filtering an input receiving signal and outputting a plurality of paths of signals, wherein each path of signal corresponds to one frequency band; and the power divider is suitable for performing power division on the input signals of the corresponding frequency bands, wherein at least one power divider corresponds to a plurality of frequency bands. For the mobile terminal supporting the LTE-A technology, in the process of realizing carrier aggregation, one power distributor corresponds to a plurality of frequency bands, namely, the power distribution work of signals of the frequency bands can be completed by the same power distributor. Therefore, the number of required elements is greatly reduced, the circuit is simplified, and the layout difficulty is reduced under the condition that the PCB space is increasingly crowded. Meanwhile, the number of receiving ports of the radio frequency chip is greatly reduced, and the design complexity of the radio frequency chip is reduced.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a mobile terminal, a received signal processing system thereof, and a method thereof.
Background
LTE (Long Term Evolution ) is a wireless data communication technology standard, and it improves data transmission capability and data transmission speed of a wireless network by means of a new technology and a modulation method, and provides a better data service for users, and is regarded as a mainstream technology of Evolution from 3G to 4G. At present, LTE is already supported by a number of mainstream operators worldwide, and China has formally started the commercial use of LTE networks.
In order to further improve the throughput rate of LTE data transmission, in an LTE-a (LTE-Advanced) evolution version of the LTE standard, a Carrier Aggregation (CA) technology is introduced, and by combining a plurality of independent bandwidth resources dispersed in a spectrum, a system bandwidth which can be practically utilized is increased, the problem that a continuous blank broadband is lacked in current wireless spectrum allocation is overcome, and more spectrum resources are strived for an LTE communication system.
For the current situation of wireless spectrum allocation, multiple carrier aggregation modes are defined in the LTE-a release standard. As for the number of the polymerizable component carriers, there may be a dual carrier, a triple carrier, or the like. As for the relationship between the aggregated component carriers, there are three aggregation modes, Inter-band aggregation (Inter-band: several aggregated carriers belong to different bands), Intra-band non-adjacent aggregation (Intra-band non-adjacent: several aggregated carriers belong to the same band but are not contiguous in the spectrum), and Intra-band continuous aggregation (Intra-band adjacent: several aggregated carriers belong to the same band but are contiguous in the spectrum).
the current mobile terminal mainly supports an aggregation mode of dual downlink Component carriers, where the two carriers are called Component Carriers (CCs) and are respectively defined as a Primary Component Carrier (PCC) and a Secondary Component Carrier (SCC) according to the configuration of the network. In the radio frequency front end, the aggregated carriers in the two frequency bands received by the antenna are averagely distributed to the PCC radio frequency chip and the SCC radio frequency chip through the power distributor, and then are distinguished and respectively processed in the radio frequency chips.
As shown in fig. 1, in the prior art, for a mobile terminal supporting LTE-a technology, implementing carrier aggregation in an intra-band aggregation mode requires configuring a power divider for each channel corresponding to each frequency band, which requires a large number of components and occupies a large PCB space. Under the current situation that the PCB space is increasingly crowded, the layout difficulty is higher.
Meanwhile, each path of signal needs to be divided into two or more paths of signals to be transmitted to the radio frequency chip, so that the number of receiving ports required by the radio frequency chip is multiplied, and the design complexity of the radio frequency chip is increased.
Meanwhile, the signal amplitude of each of the two paths of signals output by the power divider after the received signal passes through the power divider will have a certain attenuation (taking a dual carrier as an example, theoretically, there is 3dB of attenuation, that is, each path of signal has only 1/2 of the original signal, and in practice, there is about 3.25dB of attenuation). And as the number of aggregated component carriers increases, the signal amplitude is attenuated to a greater extent, for example for three carriers.
Disclosure of Invention
The technical problem solved by the invention is as follows: for a mobile terminal supporting the LTE-a technology, how to simplify a circuit and reduce the design complexity of a radio frequency chip in the process of implementing carrier aggregation.
in order to solve the above technical problem, an embodiment of the present invention provides a received signal processing system of a mobile terminal, including:
The filter is suitable for inputting a receiving signal, filtering the input receiving signal and outputting a plurality of paths of signals after the receiving signal is filtered, wherein each path of signals corresponds to a frequency band;
The low-noise amplifier is suitable for inputting signals of corresponding frequency bands, performing low-noise amplification on the input signals and outputting the signals after low-noise amplification, and the output end of the low-noise amplifier is connected with the input end of a corresponding power divider, wherein each low-noise amplifier corresponds to one power divider;
The power divider is suitable for inputting signals subjected to low noise amplification corresponding to frequency bands and performing power distribution on the input signals subjected to low noise amplification, each path of signals subjected to low noise amplification outputs at least two paths of signals after power distribution, each path of signal in the at least two paths of signals has the same component, each path of signal in the at least two paths of signals comprises a main component carrier and at least one secondary component carrier, and the output end of each path of signal is connected with at least two radio frequency chips, wherein each power divider corresponds to one or more frequency bands, and at least one power divider corresponds to a plurality of frequency bands.
Optionally, the multiple frequency bands corresponding to the same power divider are adjacent frequency bands.
Optionally, part or all of the low noise amplifiers have a plurality of input terminals, and the multi-path signals are input through the plurality of input terminals.
Optionally, part or all of the input terminals of the low noise amplifier input multiple signals through a single-pole multiple-throw switch.
optionally, the power divider equally divides the power of the input low-noise amplified signal.
Optionally, the amplitude of each of the at least two paths of signals is equal, and the at least two radio frequency chips include a PCC radio frequency chip and at least one SCC radio frequency chip, where:
The PCC radio frequency chip is suitable for processing the main component carrier wave and neglecting the secondary component carrier wave;
And the SCC radio frequency chip is suitable for processing specific secondary component carriers which can be processed by the SCC radio frequency chip, and ignoring the primary component carriers and other secondary component carriers.
Optionally, the received signal is a received LTE signal.
Optionally, the number of the power dividers is one or more.
optionally, each of the plurality of filters is a single-input single-output filter, and each of the plurality of filters is a high-performance filter.
Optionally, the number of the low noise amplifiers is one or more.
In order to solve the above technical problem, an embodiment of the present invention further provides a received signal processing system of a mobile terminal, including:
the filter is suitable for inputting a receiving signal, filtering the input receiving signal and outputting a plurality of paths of signals after the receiving signal is filtered, wherein each path of signals corresponds to a frequency band;
The power divider is suitable for inputting signals corresponding to frequency bands and performing power division on the input signals, each path of signal outputs at least two paths of signals after power division, the components of each path of signal in the at least two paths of signals are the same, each path of signal in the at least two paths of signals comprises a main component carrier and at least one secondary component carrier, the output end is connected with at least two radio frequency chips, each power divider corresponds to one or more frequency bands, and at least one power divider corresponds to a plurality of frequency bands.
in order to solve the above technical problem, an embodiment of the present invention further provides a method for processing a received signal of a mobile terminal, including:
Filtering a received signal, wherein the received signal outputs a plurality of paths of signals after being filtered, and each path of signal corresponds to a frequency band;
The power divider is used for carrying out power distribution on input signals of corresponding frequency bands, each path of signal outputs at least two paths of signals after power distribution, the components of each path of signal in the at least two paths of signals are the same, each path of signal in the at least two paths of signals comprises a main component carrier and at least one secondary component carrier, wherein each power divider corresponds to one or more frequency bands, and at least one power divider corresponds to a plurality of frequency bands;
And transmitting the at least two paths of signals output after power distribution to a radio frequency chip.
In order to solve the above technical problem, an embodiment of the present invention further provides a mobile terminal, including the received signal processing system of the mobile terminal.
Optionally, the mobile terminal is a smart phone.
in order to solve the above technical problem, an embodiment of the present invention further provides a mobile terminal, including the received signal processing method of the mobile terminal.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
For a mobile terminal supporting LTE-a technology, in the process of implementing carrier aggregation, one power splitter corresponds to multiple frequency bands, that is, power splitting of signals of multiple frequency bands may be completed by the same power splitter. Therefore, the number of required elements (especially the number of power dividers) is greatly reduced, the circuit is simplified, and the layout difficulty is reduced under the condition that the PCB space is increasingly crowded. Meanwhile, the number of receiving ports of the radio frequency chip is greatly reduced, and the design complexity of the radio frequency chip is reduced.
Further, the signal is low-noise amplified by a low-noise amplifier before entering the power divider, and the low-noise amplifier has a plurality of input ends. Therefore, the signal amplitude attenuation brought by the power divider is compensated, and meanwhile, a single-pole multi-throw switch is omitted (the conventional power divider is usually single-input, so that the single-pole multi-throw switch is needed, and a low-noise amplifier has multiple inputs), so that the circuit is further simplified.
further, the plurality of frequency bands corresponding to the same power divider are adjacent frequency bands. Under the condition of having the low noise amplifier, the low noise amplifier and the single-pole multi-throw switch can be used as wide-band devices, namely, the wide-band devices can cover a plurality of frequency bands with similar frequencies, thereby being more convenient for implementing the technical scheme of the invention.
Drawings
Fig. 1 is a block diagram illustrating a received signal processing system of a mobile terminal according to the prior art;
Fig. 2 is a block diagram of a received signal processing system of a mobile terminal according to an embodiment of the present invention;
Fig. 3 is a block diagram of a received signal processing system of a mobile terminal according to another embodiment of the present invention;
fig. 4 is a block diagram of a received signal processing system of a mobile terminal according to another embodiment of the present invention;
fig. 5 is a flowchart of a received signal processing method of a mobile terminal according to an embodiment of the present invention.
Detailed Description
As can be seen from the analysis of the background art, in the prior art, for a mobile terminal supporting LTE-a technology, a power divider needs to be configured for a path corresponding to each frequency band to implement carrier aggregation, the number of required components is large, and the PCB space occupied by the power divider is large. Under the current situation that the PCB space is increasingly crowded, the layout difficulty is higher.
meanwhile, each path of signal needs to be divided into two or more paths of signals to be transmitted to the radio frequency chip, so that the number of receiving ports required by the radio frequency chip is multiplied, and the design complexity of the radio frequency chip is increased.
meanwhile, the signal amplitude of each of the two paths of signals output by the power divider after the received signal passes through the power divider will have a certain attenuation (taking a dual carrier as an example, theoretically, there is 3dB of attenuation, that is, each path of signal has only 1/2 of the original signal, and in practice, there is about 3.25dB of attenuation). And as the number of aggregated component carriers increases, the signal amplitude is attenuated to a greater extent, for example for three carriers.
The inventor finds that: in the in-band mode, it is difficult to separate by a filter because the two (or more) downlink carriers are not far apart in frequency. In this case, in the radio frequency front end, signals can be distributed to the PCC radio frequency chip and the SCC radio frequency chip only through the power distributor, and then received signals are distinguished and processed respectively inside the radio frequency chip. The inventor proposes that: the signal paths of a plurality of frequency bands, especially the signal paths of a plurality of different frequency bands with similar subordinated frequencies can adopt the same power divider, thereby greatly reducing the number of the required power dividers, simplifying the circuit and reducing the layout difficulty under the condition that the PCB space is increasingly crowded. Meanwhile, the number of receiving ports of the radio frequency chip is greatly reduced, and the design complexity of the radio frequency chip is reduced.
in order that those skilled in the art will better understand and realize the present invention, the following detailed description is given by way of specific embodiments with reference to the accompanying drawings.
Example one
As described below, embodiments of the present invention provide a received signal processing system of a mobile terminal.
the received signal processing system of the mobile terminal provided in this embodiment is suitable for mobile terminals such as smart phones.
The mobile terminal is capable of receiving LTE signals and combining multiple independent bandwidth resources dispersed within the spectrum using carrier aggregation techniques, thereby increasing the actual available system bandwidth.
the embodiment relates to a specific implementation mode of using a carrier aggregation technology for an LTE signal received by a mobile terminal.
Referring to fig. 2, a received signal processing system of the mobile terminal is shown in a block diagram.
The received signal processing system of the mobile terminal mainly comprises: a plurality of filters, a Low Noise Amplifier (LNA), and a power splitter; wherein:
The main roles of the various filters are as follows: the method comprises the steps of inputting a receiving signal, filtering the input receiving signal, and outputting a plurality of paths of signals after the receiving signal is filtered, wherein each path of signals corresponds to a frequency band.
In a specific implementation, the received signal may be an LTE signal. But filtering other types of received signals is not excluded.
Each of the plurality of filters is a single input and single output, and a high performance filter may be specifically used.
The filter can separate an input signal according to the difference of frequencies, filter out an unnecessary interference signal for each frequency band, and output a signal of a different frequency band (each frequency band corresponds to a signal of a certain frequency range). Wherein, each path of signal corresponds to one frequency band.
the signal output by the filter is used as an original signal in the carrier aggregation technology, and then the signal is divided into two or more paths of signals by the power divider.
The main roles of the low noise amplifier are as follows: a signal of a corresponding frequency band is input, low-noise amplification is performed on the input signal, and a low-noise amplified signal is output.
the carrier aggregation technique needs to divide a signal into two or more signals through a power divider, and as analyzed by the background art, the signal amplitude of each of the two signals output by the received signal after passing through the power divider is attenuated to a certain extent relative to the original signal (taking a dual carrier as an example, there is theoretically 3dB attenuation, that is, each signal has only 1/2 of the original signal, and there is about 3.25dB attenuation in practice). And as the number of aggregated component carriers increases, the signal amplitude is attenuated to a greater extent, for example for three carriers.
Therefore, before entering the power divider, the signal is subjected to low-noise amplification through the low-noise amplifier, so that the signal amplitude attenuation caused by the power divider can be compensated.
Current power dividers are typically single input, while low noise amplifiers have multiple inputs. As shown in fig. 2, the low noise amplifier with multiple input terminals can compensate for the signal amplitude attenuation caused by the power divider, and can omit the single-pole multi-throw switch, thereby further simplifying the circuit.
In a specific implementation, all of the low noise amplifiers may have a plurality of input terminals, or some of the low noise amplifiers may have a plurality of input terminals.
In another embodiment, as shown in fig. 3, a single-input low noise amplifier may be used, and the input of the low noise amplifier inputs multiple signals via a single-pole multi-throw switch.
In the specific implementation, all the low noise amplifiers may be connected to the single-pole multi-throw switch, or some of the low noise amplifiers may be connected to the single-pole multi-throw switch.
In a specific implementation, the number of the low noise amplifiers is one or more.
And transmitting the output signals amplified by the low noise amplifiers to corresponding power dividers, wherein each low noise amplifier corresponds to one power divider.
The main functions of the power divider are as follows: the method comprises the steps of inputting signals subjected to low noise amplification of corresponding frequency bands, carrying out power distribution on the input signals subjected to low noise amplification, outputting at least two paths of signals after power distribution of each path of signals subjected to low noise amplification, wherein the components of each path of signals in the at least two paths of signals are the same, each path of signals in the at least two paths of signals comprises a main component carrier and at least one secondary component carrier, each power distributor corresponds to one or more frequency bands, and at least one power distributor corresponds to a plurality of frequency bands.
The power divider does not usually have a frequency distinguishing function, each of the at least two signals has the same component, and then a radio frequency chip (i.e., a PCC radio frequency chip and an SCC radio frequency chip) is required to distinguish, extract, and process a corresponding carrier part.
according to the difference of the number of the aggregated component carriers (for example, the number may be two carriers or three carriers), the power divider divides the input low-noise amplified signal into two or more signals, where each signal includes a main component carrier and at least one sub-component carrier. Taking three carriers as an example, that is, the number of the aggregated component carriers is three, and the aggregated component carriers need to be processed in three different radio frequency chips, the power divider divides each input signal into three signals, and each signal of the three signals includes one main component carrier and two sub-component carriers.
The difference with the prior art is that: in this embodiment, each power divider corresponds to one or more frequency bands, and at least one power divider corresponds to a plurality of frequency bands. That is, the power distribution of signals of multiple frequency bands can be performed by the same power distributor.
In a specific implementation, each power divider may correspond to a plurality of frequency bands, or some power dividers may correspond to a plurality of frequency bands. The number of frequency bands corresponding to each power splitter may be equal, for example, each power splitter corresponds to 5 frequency bands, or may be unequal, for example, some power splitters correspond to 5 frequency bands, some power splitters correspond to 7 frequency bands, and so on.
In a particular implementation, the multiple frequency bands corresponding to the same power splitter may be adjacent frequency bands. Under the condition of having the low noise amplifier, the low noise amplifier and the single-pole multi-throw switch can be used as wide-band devices, namely, the wide-band devices can cover a plurality of frequency bands with similar frequencies, thereby being more convenient for implementing the technical scheme of the invention.
In a specific implementation, the power divider equally divides the power of the input low-noise amplified signal.
The number of power dividers is not critical and it is theoretically possible to use one or more power dividers.
The two or more paths of signals output by the power divider transmit two or more than two radio frequency chips, the number of the radio frequency chips is the same as that of the signals output by the power divider and the number of component carriers, and the components of the signals transmitted to each radio frequency chip are the same. In general, different radio frequency chips can only process different specific component carriers in a received signal, and the rest of the component carriers which cannot be processed are ignored.
the radio frequency chip processes the received main component carrier and the sub-component carrier and transmits the processed main component carrier and the sub-component carrier to the baseband chip.
The above description of the technical solution shows that: in this embodiment, for a mobile terminal supporting LTE-a technology, in the process of implementing carrier aggregation, one power splitter corresponds to multiple frequency bands, that is, power splitting of signals of multiple frequency bands may be completed by the same power splitter. Therefore, the number of required elements (especially the number of power dividers) is greatly reduced, the circuit is simplified, and the layout difficulty is reduced under the condition that the PCB space is increasingly crowded. Meanwhile, the number of receiving ports of the radio frequency chip is greatly reduced, and the design complexity of the radio frequency chip is reduced.
Example two
As described below, embodiments of the present invention provide a received signal processing system of a mobile terminal.
Referring to fig. 4, a received signal processing system of the mobile terminal is shown in a block diagram.
The received signal processing system of the mobile terminal mainly comprises: a plurality of filters and power splitters; wherein:
The filter is suitable for inputting a receiving signal, filtering the input receiving signal and outputting a plurality of paths of signals after the receiving signal is filtered, wherein each path of signals corresponds to a frequency band;
the power divider is suitable for inputting signals corresponding to frequency bands and performing power division on the input signals, each path of signal outputs at least two paths of signals after power division, the components of each path of signal in the at least two paths of signals are the same, each path of signal in the at least two paths of signals comprises a main component carrier and at least one secondary component carrier, the output end is connected with at least two radio frequency chips, each power divider corresponds to one or more frequency bands, and at least one power divider corresponds to a plurality of frequency bands.
The difference from the first embodiment is that in this embodiment, a low noise amplifier is not used, and the power divider performs power division on a signal which is not amplified with low noise.
Current power dividers are typically single input. The input end of the power divider can input multiple signals through the single-pole multi-throw switch, so that the power division operation of signals of multiple frequency bands can be completed by the same power divider.
The same or similar parts as those in the first embodiment can refer to the related descriptions in the first embodiment, and are not described herein again.
The above description of the technical solution shows that: in this embodiment, for a mobile terminal supporting LTE-a technology, in the process of implementing carrier aggregation, one power splitter corresponds to multiple frequency bands, that is, power splitting of signals of multiple frequency bands may be completed by the same power splitter. Therefore, the number of required elements (especially the number of power dividers) is greatly reduced, the circuit is simplified, and the layout difficulty is reduced under the condition that the PCB space is increasingly crowded. Meanwhile, the number of receiving ports of the radio frequency chip is greatly reduced, and the design complexity of the radio frequency chip is reduced.
EXAMPLE III
As described below, an embodiment of the present invention provides a received signal processing method for a mobile terminal.
The received signal processing method of the mobile terminal provided in this embodiment is suitable for mobile terminals such as smart phones.
The mobile terminal is capable of receiving LTE signals and combining multiple independent bandwidth resources dispersed within the spectrum using carrier aggregation techniques, thereby increasing the actual available system bandwidth.
The embodiment relates to a specific implementation mode of using a carrier aggregation technology for an LTE signal received by a mobile terminal.
Referring to fig. 5, a received signal processing method of a mobile terminal is shown. The following is detailed by the specific steps:
s501, filtering the received signal, and outputting a plurality of paths of signals after the received signal is filtered.
Wherein, each path of signal corresponds to one frequency band.
In a specific implementation, the received signal is a received LTE signal.
S502, the power distributor distributes power to the input signals of the corresponding frequency bands, and each path of signals outputs at least two paths of signals after power distribution.
The components of each of the at least two paths of signals are the same, and each of the at least two paths of signals comprises a main component carrier and at least one secondary component carrier.
wherein each power divider corresponds to one or more frequency bands, and at least one power divider corresponds to a plurality of frequency bands.
In a specific implementation, the multiple frequency bands corresponding to the same power splitter are adjacent frequency bands.
In a specific implementation, part or all of the input terminals of the power divider input multiple signals through a single-pole multiple-throw switch.
In a specific implementation, the power allocation evenly allocates the power of the input signal.
in a specific implementation, the amplitude of each of the at least two signals is equal, and the at least two rf chips include a PCC rf chip and at least one SCC rf chip, where:
The PCC radio frequency chip is suitable for processing the main component carrier wave and neglecting the secondary component carrier wave;
and the SCC radio frequency chip is suitable for processing specific secondary component carriers which can be processed by the SCC radio frequency chip, and ignoring the primary component carriers and other secondary component carriers.
The number of the radio frequency chips is the same as the number of signals output by the power divider and the number of the component carriers.
In a specific implementation, the number of the power dividers is one or more.
And S503, transmitting the at least two paths of signals output after power distribution to a radio frequency chip.
the radio frequency chip processes the received main component carrier and the sub-component carrier and transmits the processed main component carrier and the sub-component carrier to the baseband chip.
The above description of the technical solution shows that: in this embodiment, for a mobile terminal supporting LTE-a technology, in the process of implementing carrier aggregation, one power splitter corresponds to multiple frequency bands, that is, power splitting of signals of multiple frequency bands may be completed by the same power splitter. Therefore, the number of required elements (especially the number of power dividers) is greatly reduced, the circuit is simplified, and the layout difficulty is reduced under the condition that the PCB space is increasingly crowded. Meanwhile, the number of receiving ports of the radio frequency chip is greatly reduced, and the design complexity of the radio frequency chip is reduced.
Example four
As described below, an embodiment of the present invention provides a mobile terminal.
The mobile terminal is capable of receiving LTE signals and combining multiple independent bandwidth resources dispersed within the spectrum using carrier aggregation techniques, thereby increasing the actual available system bandwidth.
The difference with the prior art is that:
In one embodiment, the mobile terminal further comprises a received signal processing system of the mobile terminal as provided in embodiments of the present invention.
In another embodiment, the mobile terminal further comprises a received signal processing method of the mobile terminal as provided in the embodiments of the present invention.
Therefore, in the process of implementing carrier aggregation in the mobile terminal, one power divider corresponds to multiple frequency bands, that is, the power division operation of signals of multiple frequency bands can be completed by the same power divider. Therefore, the number of required elements (especially the number of power dividers) is greatly reduced, the circuit is simplified, and the layout difficulty is reduced under the condition that the PCB space is increasingly crowded. Meanwhile, the number of receiving ports of the radio frequency chip is greatly reduced, and the design complexity of the radio frequency chip is reduced.
In a specific implementation, the mobile terminal may be a smartphone.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (28)
1. A received signal processing system of a mobile terminal, comprising:
The system comprises a plurality of filters, a plurality of signal processing units and a plurality of signal processing units, wherein the filters are suitable for inputting receiving signals, filtering the input receiving signals and outputting a plurality of paths of signals after the receiving signals are filtered, an in-band carrier aggregation technology is adopted, each path of signal comprises a plurality of aggregated carriers, and each path of signal corresponds to a frequency band;
The low-noise amplifier is suitable for inputting signals of corresponding frequency bands, performing low-noise amplification on the input signals and outputting the signals after low-noise amplification, and the output end of the low-noise amplifier is connected with the input end of a corresponding power divider, wherein each low-noise amplifier corresponds to one power divider;
The power divider is suitable for inputting signals subjected to low noise amplification corresponding to frequency bands and performing power distribution on the input signals subjected to low noise amplification, each path of signals subjected to low noise amplification outputs at least two paths of signals after power distribution, each path of signal in the at least two paths of signals has the same component, each path of signal in the at least two paths of signals comprises a main component carrier and at least one secondary component carrier, and the output end of each path of signal is connected with at least two radio frequency chips, wherein each power divider corresponds to one or more frequency bands, and at least one power divider corresponds to a plurality of frequency bands.
2. The received signal processing system of claim 1, wherein the plurality of frequency bands corresponding to the same power divider are adjacent frequency bands.
3. the received signal processing system of claim 1, wherein some or all of the low noise amplifiers have a plurality of inputs through which the multiplexed signals are input.
4. the received signal processing system of a mobile terminal according to claim 1, wherein part or all of the inputs of the low noise amplifier input a plurality of signals via a single pole multiple throw switch.
5. The received signal processing system of claim 1, wherein the power divider equally divides the power of the input low-noise amplified signal.
6. The received signal processing system of claim 1, wherein each of the at least two signals has an equal amplitude, and the at least two rf chips comprise a PCC rf chip and at least one SCC rf chip, wherein:
The PCC radio frequency chip is suitable for processing the main component carrier wave and neglecting the secondary component carrier wave;
And the SCC radio frequency chip is suitable for processing specific secondary component carriers which can be processed by the SCC radio frequency chip, and ignoring the primary component carriers and other secondary component carriers.
7. The received signal processing system of the mobile terminal of claim 1, wherein the received signal is a received LTE signal.
8. The received signal processing system of a mobile terminal of claim 1, wherein the number of the power dividers is one or more.
9. The received signal processing system of claim 1, wherein each of the plurality of filters is a single input and single output and each of the plurality of filters is a high performance filter.
10. the received signal processing system of the mobile terminal according to claim 1, wherein the number of the low noise amplifiers is one or more.
11. A received signal processing system of a mobile terminal, comprising:
the system comprises a plurality of filters, a plurality of signal processing units and a plurality of signal processing units, wherein the filters are suitable for inputting receiving signals, filtering the input receiving signals and outputting a plurality of paths of signals after the receiving signals are filtered, an in-band carrier aggregation technology is adopted, each path of signal comprises a plurality of aggregated carriers, and each path of signal corresponds to a frequency band;
The power divider is suitable for inputting signals corresponding to frequency bands and performing power division on the input signals, each path of signal outputs at least two paths of signals after power division, the components of each path of signal in the at least two paths of signals are the same, each path of signal in the at least two paths of signals comprises a main component carrier and at least one secondary component carrier, the output end is connected with at least two radio frequency chips, each power divider corresponds to one or more frequency bands, and at least one power divider corresponds to a plurality of frequency bands.
12. The received signal processing system of claim 11, wherein the plurality of frequency bands corresponding to the same power divider are adjacent frequency bands.
13. the received signal processing system of claim 11, wherein some or all of the inputs of the power divider input multiple signals via a single-pole multiple-throw switch.
14. The received signal processing system of a mobile terminal of claim 11, wherein the power divider equally divides the power of the input signal.
15. the received signal processing system of claim 11, wherein each of the at least two signals has an equal amplitude, and the at least two rf chips comprise a PCC rf chip and at least one SCC rf chip, wherein:
The PCC radio frequency chip is suitable for processing the main component carrier wave and neglecting the secondary component carrier wave;
And the SCC radio frequency chip is suitable for processing specific secondary component carriers which can be processed by the SCC radio frequency chip, and ignoring the primary component carriers and other secondary component carriers.
16. The received signal processing system of claim 11, wherein the received signal is a received LTE signal.
17. The received signal processing system of a mobile terminal of claim 11, wherein the number of the power dividers is one or more.
18. The received signal processing system of claim 11, wherein each of the plurality of filters is a single input and single output and each of the plurality of filters is a high performance filter.
19. a method for processing a received signal of a mobile terminal, comprising:
Filtering a received signal, wherein the received signal outputs a plurality of paths of signals after being filtered, an in-band carrier aggregation technology is adopted, each path of signal comprises a plurality of aggregated carriers, and each path of signal corresponds to a frequency band;
The power divider is used for carrying out power distribution on input signals of corresponding frequency bands, each path of signal outputs at least two paths of signals after power distribution, the components of each path of signal in the at least two paths of signals are the same, each path of signal in the at least two paths of signals comprises a main component carrier and at least one secondary component carrier, wherein each power divider corresponds to one or more frequency bands, and at least one power divider corresponds to a plurality of frequency bands;
And transmitting the at least two paths of signals output after power distribution to at least two radio frequency chips.
20. The received signal processing method of a mobile terminal according to claim 19, wherein the plurality of frequency bands corresponding to the same power divider are adjacent frequency bands.
21. the received signal processing method of a mobile terminal according to claim 19, wherein part or all of the input terminals of the power divider input the multi-path signal via a single-pole multi-throw switch.
22. The received signal processing method of a mobile terminal according to claim 19, wherein the power allocation equally allocates power of the inputted signal.
23. the method for processing the received signal of the mobile terminal of claim 19, wherein each of the at least two signals has an equal amplitude, and the at least two rf chips comprise a PCC rf chip and at least one SCC rf chip, wherein:
The PCC radio frequency chip is suitable for processing the main component carrier wave and neglecting the secondary component carrier wave;
And the SCC radio frequency chip is suitable for processing specific secondary component carriers which can be processed by the SCC radio frequency chip, and ignoring the primary component carriers and other secondary component carriers.
24. The received signal processing method of the mobile terminal according to claim 19, wherein the received signal is a received LTE signal.
25. The received signal processing method of a mobile terminal of claim 19, wherein the number of the power dividers is one or more.
26. A mobile terminal, characterized in that it comprises a received signal processing system of a mobile terminal according to any of claims 1 to 10, or a received signal processing system comprising a mobile terminal according to any of claims 11 to 18.
27. The mobile terminal of claim 26, wherein the mobile terminal is a smartphone.
28. A mobile terminal, characterized in that the received LTE signal is processed by the received signal processing method of the mobile terminal according to any one of claims 19 to 25.
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| JP2020099028A (en) * | 2018-12-19 | 2020-06-25 | 株式会社村田製作所 | High frequency module and communication apparatus |
| CN110601803A (en) * | 2019-08-14 | 2019-12-20 | 洛阳智能农业装备研究院有限公司 | System chip supporting carrier aggregation technology |
| CN114826319A (en) * | 2022-04-15 | 2022-07-29 | Oppo广东移动通信有限公司 | Radio frequency front-end module, radio frequency module, wireless communication equipment and signal processing method |
| CN114944976A (en) * | 2022-04-28 | 2022-08-26 | 中国电子科技集团公司第三十六研究所 | Signal processing method based on mobile terminal |
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| CN104467970A (en) * | 2014-11-28 | 2015-03-25 | 北京邮电大学 | Conversion device and method for transmitting signals in mixed mode |
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| US8849217B2 (en) * | 2011-06-22 | 2014-09-30 | Broadcom Corporation | Antenna arrangement |
| CN104243109A (en) * | 2013-06-07 | 2014-12-24 | 工业和信息化部电信传输研究所 | Uplink data mixed automatic retransmission request information indication method |
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