Transceiver, remote radio unit and base station
By using separate four-mechanical devices and duplexers in the transceiver and implementing the output of the RF signal through the combined machine, the major problem of the RF filter suppression system in the prior art is solved, and the manufacturing difficulty and cost are reduced.
Patent Information
- Application Number
- CN202311363226.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-19
- Publication Date
- 2025-04-22
AI Technical Summary
In the prior art, the suppression system of RF filters between different working frequency bands is relatively large, which makes manufacturing and assembly difficult and costly.
Using separate four-mechanical devices and duplexers, the output of the radio frequency signal is realized through the combined circuit, reducing the suppression system of the four-mechanical devices in the third receiving working frequency band, and simplifying the structure and reducing the size of each device.
It reduces the difficulty of manufacturing and assembly of transceivers, reduces costs, and improves the output efficiency of radio frequency signals.
Smart Images
Figure CN119865194A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of communication technology, and more specifically, to a transceiver, a radio remote unit and a base station. Background Art
[0002] With the increasing demand for mobile bandwidth capacity, in order to meet the needs of simplifying the base station antenna, reduce the number of radio remote units (RRUs) in the base station, and reduce the deployment cost of the base station, ultra-wideband multi-band base stations have been widely used. Ultra-wideband multi-band base stations often need to operate in multiple working frequency bands (including transmission working bands or reception working bands). For example, an ultra-wideband multi-band base station can operate in three working frequency bands of 700MHz, 800MHz and 900MHz at the same time, or it can operate in three working frequency bands of 1800MHz, 2100MHz and 2600MHz at the same time. In order to realize the transmission or reception of radio frequency signals, the transceiver in the radio remote unit also needs to operate in multiple working frequency bands at the same time.
[0003] The transceiver provided by the related technology transmits or receives radio frequency signals through at least two amplifiers and a hexaplexer. One of the amplifiers will simultaneously support the transmission working frequency bands of 1805MHz to 1880MHz (that is, the above-mentioned 1800MHz, represented by B3) and 2110MHz to 2170MHz (that is, the above-mentioned 2100MHz, represented by B1), and the other amplifier can support the transmission working frequency band of 2620MHz to 2690MHz (that is, the above-mentioned 2600MHz, represented by B7). The frequency range of the third-order intermodulation signal of the B1 and B3 transmission working frequency bands is 2340MHz to 2535MHz, and there is an overlapping range of 35MHz between 2340MHz to 2535MHz and the B7 receiving working frequency band (that is, 2500MHz to 2535MHz). In other words, the frequency of the third-order intermodulation signal of the B1 and B3 transmission working frequency bands will hit the B7 receiving working frequency band. As a result, the RF filter of the 1800MHz and 2100MHz transmission frequency bands has a greater degree of suppression in the 2600MHz reception frequency band. At the same time, the hexaplexer has a complex topology and large size, which makes the manufacturing and assembly of the transceiver difficult and costly.
[0004] Therefore, there is an urgent need for a technical solution that can reduce the suppression degree of a radio frequency filter in one operating frequency band in another operating frequency band, reduce the difficulty of manufacturing and assembling a transceiver, and reduce the cost of the transceiver. Summary of the invention
[0005] The present application provides a transceiver, a radio frequency remote unit and a base station, which can not only reduce the suppression degree of the first transmit filter and the second transmit filter in the third receiving operating frequency band, but also have a simple structure, and the size of the quadplexer and the duplexer are relatively small, so that the manufacturing and assembly of the transceiver are easy and low in cost.
[0006] In a first aspect, the present application provides a transceiver, which may include a first transmitting module, a second transmitting module, a quadplexer, a duplexer, and a combiner, wherein the first transmitting module may be connected to the quadplexer, the second transmitting module may be connected to the duplexer, and both the quadplexer and the duplexer are connected to the combiner.
[0007] The transceiver provided by the present application can realize the output of the first transmission radio frequency signal and / or the second transmission radio frequency signal through a quadplexer, a duplexer and a combiner. Compared with the hexaplexer used in the related art, the transceiver provided by the present application can not only reduce the suppression degree of the quadplexer in the third receiving working frequency band through the separated quadplexer and duplexer, but also has a simple structure, and the size of the quadplexer and duplexer is small, so that the manufacturing and assembly difficulty of the transceiver is small and the cost is low.
[0008] In a possible implementation manner, the first transmitting module may be used to transmit the first transmitting radio frequency signal to the quadplexer.
[0009] Similarly, the second transmitting module can be used to transmit the second transmitting radio frequency signal to the duplexer.
[0010] The quadplexer may be used to transmit the first transmit radio frequency signal to the combiner.
[0011] The duplexer may be used to transmit the second transmit radio frequency signal to the combiner.
[0012] The combiner can be used to: output the first transmission RF signal and / or the second transmission RF signal. That is, in the case where only the first transmission module outputs the first transmission RF signal, the combiner can output the first transmission RF signal. In the case where only the second transmission module outputs the second transmission RF signal, the combiner can output the second transmission RF signal. In the case where the first transmission module outputs the first transmission RF signal and the second transmission module outputs the second transmission RF signal, the combiner can output the first transmission RF signal and the second transmission RF signal.
[0013] It can be seen that the transceiver provided in the present application can be used as a transmitting end to output the first transmission RF signal and / or the second transmission RF signal. For the first transmission module, the first transmission RF signal can be used as the output signal of the first transmission module. Similarly, for the second transmission module, the second transmission RF signal can be used as the output signal of the second transmission module. For the quadplexer, the first transmission RF signal from the first transmission module can be used as the input signal of the quadplexer. Similarly, for the duplexer, the second transmission RF signal from the second transmission module can be used as the input signal of the duplexer. For the combiner, the first transmission RF signal from the quadplexer and the second transmission RF signal from the duplexer can both be used as input signals of the combiner. Finally, the first transmission RF signal and / or the second transmission RF signal are output to the antenna, etc. through the combiner.
[0014] In a possible implementation, the first transmit radio frequency signal may have a first transmit operating frequency band and / or a second transmit operating frequency band. That is, the first transmit radio frequency signal may have only the first transmit operating frequency band, may have only the second transmit operating frequency band, or may have both the first transmit operating frequency band and the second transmit operating frequency band. The second transmit radio frequency signal may have a third transmit operating frequency band.
[0015] Optionally, the first transmit operating frequency band, the second transmit operating frequency band and the third transmit operating frequency band may be different.
[0016] For example, the first transmission operating frequency band may be 1805 MHz to 1880 MHz, the second transmission operating frequency band may be 2110 MHz to 2170 MHz, and the third transmission operating frequency band may be 2620 MHz to 2690 MHz.
[0017] For another example, the first transmitting operating frequency band may be 738 MHz to 788 MHz, the second transmitting operating frequency band may be 791 MHz to 821 MHz, and the third transmitting operating frequency band may be 925 MHz to 960 MHz.
[0018] In another possible implementation, the transceiver provided by the present application may further include a receiving channel.
[0019] Optionally, the combiner may also be used to: receive the first received RF signal and transmit it to the quadplexer, and / or, receive the second received RF signal and transmit it to the duplexer. That is, the combiner may only receive the first received RF signal and transmit it to the quadplexer, or may only receive the second received RF signal and transmit it to the duplexer, or may receive the first received RF signal and transmit it to the quadplexer and receive the second received RF signal and transmit it to the duplexer.
[0020] The quadplexer may also be used to: transmit the first received RF signal to the receiving channel;
[0021] The duplexer may also be used to transmit the second received radio frequency signal to the receiving channel.
[0022] The first received RF signal may have a first received working frequency band and / or a second received working frequency band. That is, the first received RF signal may have only the first received working frequency band, or only the second received working frequency band, or both the first received working frequency band and the second received working frequency band. The second received RF signal may have a third received working frequency band.
[0023] Optionally, the first receiving operating frequency band, the second receiving operating frequency band and the third receiving operating frequency band may be different.
[0024] For example, the first receiving working frequency band may be 1710 MHz to 1785 MHz, the second receiving working frequency band may be 1920 MHz to 1980 MHz, and the third receiving working frequency band may be 2500 MHz to 2570 MHz.
[0025] For another example, the first receiving working frequency band may be 703 MHz to 733 MHz, the second receiving working frequency band may be 832 MHz to 862 MHz, and the third receiving working frequency band may be 880 MHz to 915 MHz.
[0026] It can be seen that the transceiver provided in the present application can be used as a receiving end to receive the first received RF signal and / or the second received RF signal. For a combiner, the first received RF signal and the second received RF signal can be used as input signals of the combiner. For a quadplexer, the first received RF signal from the combiner can be used as an input signal of the quadplexer. Similarly, for a duplexer, the second received RF signal from the combiner can be used as an input signal of the duplexer. Finally, the first received RF signal and / or the second received RF signal are input to the transceiver through the receiving channel.
[0027] In a possible implementation, the quadplexer may include a first transmit filter, a second transmit filter, a first receive filter, and a second receive filter.
[0028] Optionally, the first transmit filter may be used to transmit a first transmit radio frequency signal in a first transmit operating frequency band to a combiner.
[0029] The second transmit filter can be used to transmit the first transmit radio frequency signal in the second transmit operating frequency band to the combiner.
[0030] The first receiving filter can be used to transmit a first receiving radio frequency signal in a first receiving working frequency band to a receiving channel.
[0031] The second receiving filter can be used to transmit the first receiving radio frequency signal in the second receiving working frequency band to the receiving channel.
[0032] It can be seen that the quadplexer may include four filters, and the four filters can work independently. Among them, the first transmit filter and the second transmit filter are used to transmit the first transmit RF signal, and the first receive filter and the second receive filter are used to receive the first receive RF signal.
[0033] Exemplarily, the first transmit filter, the second transmit filter, the first receive filter and the second receive filter may all be dielectric filters or metal cavity filters, etc., which is not limited in the present application.
[0034] In another possible implementation, the duplexer may include a third transmit filter and a third receive filter.
[0035] Optionally, the third transmit filter may be used to transmit the second transmit radio frequency signal in the third transmit operating frequency band to the combiner.
[0036] The third receiving filter can be used to transmit the second receiving radio frequency signal in the third receiving working frequency band to the receiving channel.
[0037] It can be seen that the duplexer may include two filters, and the two filters may work independently.
[0038] Exemplarily, the third transmitting filter and the third receiving filter may also be dielectric filters or metal cavity filters, etc., which are not limited in the present application.
[0039] In yet another possible implementation, the combiner may include a first transceiver filter and a second transceiver filter.
[0040] Optionally, the first transceiver filter can be used to: output the first transmit RF signal, and can also be used to transmit the first receive RF signal to the quadplexer. It can be seen that the first transceiver filter not only plays a role in sending the first transmit RF signal from the quadplexer to the antenna, etc., but also plays a role in receiving the first receive RF signal from the antenna, etc.
[0041] The second transceiver filter can be used to: output the second transmit RF signal, and can also be used to transmit the second receive RF signal to the duplexer. It can be seen that, similar to the first transceiver filter, the second transceiver filter not only plays the role of sending the second transmit RF signal from the duplexer to the antenna, etc., but also plays the role of receiving the second receive RF signal from the antenna, etc.
[0042] In comparison, the third transmission operating frequency band of the second transmission RF signal is higher than the first transmission operating frequency band and the second transmission operating frequency band of the first transmission RF signal. Therefore, the first transceiver filter can be called a low-pass filter and the second transceiver filter can be called a high-pass filter.
[0043] Exemplarily, the first transceiver filter and the second transceiver filter may both be dielectric filters or metal cavity filters, etc., which are not limited in the present application.
[0044] In one example, the first transmitting module may include a first transmitting channel and a first amplifier. The first transmitting channel and the first amplifier may be connected in series.
[0045] Optionally, the first transmitting channel may be used to: output a first transmitting radio frequency signal and transmit it to the first amplifier.
[0046] The first amplifier may be used to amplify the first transmit radio frequency signal and transmit the amplified signal to the quadplexer.
[0047] It can be understood that the first amplifier can be a power amplifier, etc., which can amplify the first transmit radio frequency signal in the first transmit working frequency band and the second transmit working frequency band.
[0048] In another example, similar to the first transmitting module, the second transmitting module may include a second transmitting channel and a second amplifier. The second transmitting channel and the second amplifier may be connected in series.
[0049] Optionally, the second transmitting channel may be used to: output a second transmitting radio frequency signal and transmit it to a second amplifier;
[0050] The second amplifier can be used to amplify the second transmit radio frequency signal and transmit it to the duplexer.
[0051] It can be understood that the second amplifier can also be a power amplifier, etc., which can amplify the second transmission radio frequency signal in the third transmission working frequency band.
[0052] Furthermore, the first transmission channel and the second transmission channel may each include a first digital signal processing module, a digital-to-analog converter, a reconstruction filter, a first variable gain amplifier and a power amplifier module, wherein the power amplifier module may include a plurality of power amplifiers connected in series.
[0053] Optionally, the first digital signal processing module, the digital-to-analog converter, the reconstruction filter, the first variable gain amplifier and the power amplification module may be connected in sequence.
[0054] The first digital signal processing module may be used to process the digital signal (filtering, frequency conversion, etc.) to obtain a processed digital signal.
[0055] The digital-to-analog converter can be used to convert the processed digital signal into a radio frequency signal.
[0056] The reconstruction filter can be used to filter the radio frequency signal to remove the Nyquist image signal output by the digital-to-analog converter to obtain a filtered radio frequency signal.
[0057] The first variable gain amplifier can be used to: amplify the gain of the filtered RF signal to obtain a gain-amplified RF signal; it can be imagined that the first variable gain amplifier can also compensate for the gain of the RF channel and play a role in controlling the power of the transmitted RF signal.
[0058] The power amplification module can be used to amplify the power of the gain-amplified radio frequency signal to obtain a first transmit radio frequency signal or a second transmit radio frequency signal.
[0059] In a possible implementation, the receiving channel may include a low noise amplifier module, a radio frequency filter, a mixer, a second variable gain amplifier, an anti-aliasing filter, an analog-to-digital converter, a second digital signal processing module and a phase-locked loop. The low noise amplifier module may include a plurality of low noise amplifiers connected in series.
[0060] Optionally, the low noise amplifier module, the radio frequency filter, the mixer, the second variable gain amplifier, the anti-aliasing filter, the analog-to-digital converter, and the second digital signal processing module are connected in sequence, and the phase-locked loop can be connected to the mixer.
[0061] The low-noise amplification module may be used to: perform low-noise amplification on the first received RF signal or the second received RF signal to obtain the first received RF signal or the second received RF signal after low-noise amplification.
[0062] The RF filter can be used to filter the first received RF signal or the second received RF signal after low-noise amplification, and filter out interference signals such as image frequency and out-of-band blocking to obtain the filtered first received RF signal or the second received RF signal.
[0063] The phase-locked loop can be used to: Provide a local oscillator signal for the mixer.
[0064] The mixer can be used to perform frequency conversion on the filtered first received radio frequency signal or the second received radio frequency signal according to the local oscillator signal to obtain a first received intermediate frequency signal or a second received intermediate frequency signal.
[0065] The second variable gain amplifier can be used to amplify the gain of the first received intermediate frequency signal or the second received intermediate frequency signal to obtain the first received intermediate frequency signal or the second received intermediate frequency signal after gain amplification. It is conceivable that the second variable gain amplifier can also play the role of automatic gain control (AGC).
[0066] The anti-aliasing filter can be used to filter the first received intermediate frequency signal or the second received intermediate frequency signal after gain amplification to filter out the Nyquist aliasing interference signal and obtain the filtered first received intermediate frequency signal or the second received intermediate frequency signal.
[0067] The analog-to-digital converter may be used to convert the filtered first received intermediate frequency signal or the second received intermediate frequency signal into a digital signal.
[0068] The second digital signal processing module can be used to process the digital signal (filtering, frequency conversion, etc.) to obtain a processed digital signal.
[0069] In a second aspect, the present application provides a remote radio unit (RRU), which may include the transceiver provided by the above-mentioned first aspect and possible implementation methods thereof.
[0070] In a third aspect, the present application provides a base station, which may include a baseband processing unit (BBU) and a radio remote unit provided by the second aspect and possible implementations thereof. The baseband processing unit may be connected to the radio remote unit.
[0071] Optionally, the base station may further include a power supply, which may supply power to the baseband processing unit and the radio remote unit.
[0072] It should be understood that the second and third aspects of the present application are consistent with the technical solutions of the first aspect of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0073] In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0074] Figure 1 A schematic diagram of a receiving working frequency band of B7 in which a third-order intermodulation signal of the transmitting working frequency bands of B1 and B3 hits the receiving working frequency band in the related art;
[0075] Figure 2 is a schematic structural diagram of a transceiver 10 in an embodiment of the present application;
[0076] Figure 3 1 is a schematic structural diagram of the first emission channel 111 and the second emission channel 121 in the embodiment of the present application;
[0077] Figure 4 is a schematic structural diagram of the receiving channel 16 in an embodiment of the present application;
[0078] Figure 5 A schematic diagram of the insertion loss and suppression degree of the first transceiver filter 151 in an embodiment of the present application;
[0079] Figure 6 Schematic diagram of insertion loss and suppression of the second transceiver filter 152 in the embodiment of the present application;
[0080] Figure 7 A schematic structural diagram of a base station 100 in an embodiment of the present application. DETAILED DESCRIPTION
[0081] The technical solution in this application will be described below in conjunction with the accompanying drawings.
[0082] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0083] The terms "first", "second", etc. in the specification embodiments, claims, and drawings of the present application are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, including a series of steps or units. The method, system, product, or device is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.
[0084] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.
[0085] With the increasing demand for mobile bandwidth capacity, in order to meet the needs of simplifying the base station antenna, reduce the number of radio remote units (RRUs) in the base station, and reduce the deployment cost of the base station, ultra-wideband multi-band base stations have been widely used. Ultra-wideband multi-band base stations often need to operate in multiple working frequency bands (including transmission working bands or reception working bands). For example, an ultra-wideband multi-band base station can operate in three working frequency bands of 700MHz, 800MHz and 900MHz at the same time, or it can operate in three working frequency bands of 1800MHz, 2100MHz and 2600MHz at the same time. In order to realize the transmission or reception of radio frequency signals, the transceiver in the radio remote unit also needs to operate in multiple working frequency bands at the same time.
[0086] The transceiver provided by the related technology transmits or receives radio frequency signals through at least two amplifiers and a hexaplexer. One of the amplifiers will support the transmission working frequency bands of 1805MHz to 1880MHz (that is, the above-mentioned 1800MHz, which can be represented by B3 (i.e. band3)) and 2110MHz to 2170MHz (that is, the above-mentioned 2100MHz, represented by B1 (i.e. band1)), and the other amplifier can support the transmission working frequency band of 2620MHz to 2690MHz (that is, the above-mentioned 2600MHz, represented by B7 (i.e. band7)). Figure 1 As shown, the frequency range of the third-order intermodulation signal of the transmitting working band of B1 and B3 is 2340MHz~2535MHz. There is an overlap range of 35MHz between 2340MHz~2535MHz and the receiving working band of B7, that is, 2500MHz~2535MHz. Figure 1The slashed part in . In other words, the frequency of the third-order intermodulation signal of the B1 and B3 transmission working bands will hit the B7 reception working band. As a result, the RF filter of the 1800MHz and 2100MHz transmission working bands has a greater degree of suppression in the 2600MHz reception working band. At the same time, the hexaplexer has a complex topology and large size, which makes the manufacturing and assembly of the transceiver difficult and costly.
[0087] In order to overcome the above shortcomings, the present application embodiment provides a transceiver, such as Figure 2 The transceiver 10 may include a first transmitting module 11, a second transmitting module 12, a quadplexer 13, a duplexer 14, and a combiner 15. The first transmitting module 11 may be connected to the quadplexer 13, the second transmitting module 12 may be connected to the duplexer 14, and both the quadplexer 13 and the duplexer 14 may be connected to the combiner 15.
[0088] Optionally, the first transmitting module 11 may be configured to transmit a first transmit (TX) radio frequency (RF) signal (which may be represented by RF1 -TX) to the quadplexer 13 .
[0089] Similarly, the second transmitting module 12 can be used to transmit a second transmitting radio frequency signal (which can be represented by RF2-TX) to the duplexer 14 .
[0090] The quadplexer 13 may be configured to transmit the first transmit radio frequency signal RF1-TX to the combiner 15 .
[0091] The duplexer 14 may be configured to transmit the second transmit radio frequency signal RF2-TX to the combiner 15 .
[0092] The combiner 15 can be used to: output the first transmission RF signal RF1-TX and / or the second transmission RF signal RF2-TX. That is, in the case where only the first transmission module 11 outputs the first transmission RF signal RF1-TX, the combiner 15 can output the first transmission RF signal RF1-TX. In the case where only the second transmission module 12 outputs the second transmission RF signal RF2-TX, the combiner 15 can output the second transmission RF signal RF2-TX. In the case where the first transmission module 11 outputs the first transmission RF signal RF1-TX and the second transmission module 12 outputs the second transmission RF signal RF2-TX, the combiner 15 can output the first transmission RF signal RF1-TX and the second transmission RF signal RF2-TX.
[0093] It can be seen that the transceiver 10 provided in the embodiment of the present application can be used as a transmitting end to output the first transmission RF signal RF1-TX and / or the second transmission RF signal RF2-TX. For the first transmission module 11, the first transmission RF signal RF1-TX can be used as the output signal of the first transmission module 11. Similarly, for the second transmission module 12, the second transmission RF signal RF2-TX can be used as the output signal of the second transmission module 12. For the quadplexer 13, the first transmission RF signal RF1-TX from the first transmission module 11 can be used as the input signal of the quadplexer 13. Similarly, for the duplexer 14, the second transmission RF signal RF2-TX from the second transmission module 12 can be used as the input signal of the duplexer 14. For the combiner 15, the first transmission RF signal RF1-TX from the quadplexer 13 and the second transmission RF signal RF2-TX from the duplexer 14 can both be used as input signals of the combiner 15. Finally, the first transmit radio frequency signal RF1-TX and / or the second transmit radio frequency signal RF2-TX are output to the antenna ANT etc. through the combiner 15 .
[0094] The transceiver 10 provided in the embodiment of the present application can output the first transmission radio frequency signal RF1-TX and / or the second transmission radio frequency signal RF2-TX through the quadplexer 13, the duplexer 14 and the combiner 15. Compared with the hexaplexer used in the related art, the transceiver 10 provided in the embodiment of the present application can not only reduce the suppression degree of the quadplexer 13 in the third receiving working frequency band through the separated quadplexer 13 and the duplexer 14, but also has a simple structure, and the size of each of the quadplexer 13 and the duplexer 14 is small, so that the manufacturing and assembly difficulty of the transceiver 10 is small, and the cost is low.
[0095] In some embodiments, the first transmit radio frequency signal RF1-TX may have a first transmit operating frequency band and / or a second transmit operating frequency band. That is, the first transmit radio frequency signal RF1-TX may have only the first transmit operating frequency band, may have only the second transmit operating frequency band, or may have both the first transmit operating frequency band and the second transmit operating frequency band. The second transmit radio frequency signal RF2-TX may have a third transmit operating frequency band.
[0096] Optionally, the first transmit operating frequency band, the second transmit operating frequency band and the third transmit operating frequency band may be different.
[0097] For example, the first transmission operating frequency band may be 1805 MHz to 1880 MHz, the second transmission operating frequency band may be 2110 MHz to 2170 MHz, and the third transmission operating frequency band may be 2620 MHz to 2690 MHz.
[0098] For another example, the first transmitting operating frequency band may be 738 MHz to 788 MHz, the second transmitting operating frequency band may be 791 MHz to 821 MHz, and the third transmitting operating frequency band may be 925 MHz to 960 MHz.
[0099] In the embodiment of the present application, the frequency of the first transmitting RF signal RF1-TX may be 1800 MHz and 2100 MHz, and the frequency of the second transmitting RF signal RF2-TX may be 2600 MHz.
[0100] In some other embodiments, the transceiver 10 provided in the embodiment of the present application may further include a receiving channel 16, such as Figure 2 shown.
[0101] Optionally, the combiner 15 can also be used to: receive a first receive (receive, RX) radio frequency (radiofrequency, RF) signal (which can be represented by RF1-RX) and transmit it to the quadplexer 13, and / or, receive a second receive radio frequency signal (which can be represented by RF2-RX) and transmit it to the duplexer 14. That is, the combiner 15 can only receive the first receive radio frequency signal RF1-RX and transmit it to the quadplexer 13, or can only receive the second receive radio frequency signal RF2-RX and transmit it to the duplexer 14, and can also receive the first receive radio frequency signal RF1-RX and transmit it to the quadplexer 13 and receive the second receive radio frequency signal RF1-RX and transmit it to the duplexer 14.
[0102] The quadplexer 13 may also be configured to transmit the first received radio frequency signal RF1 -RX to the receiving channel 16 .
[0103] The duplexer 14 may also be configured to transmit the second received radio frequency signal RF2-RX to the receiving channel 16 .
[0104] Among them, the first received radio frequency signal RF1-RX may have a first received working frequency band and / or a second received working frequency band. That is to say, the first received radio frequency signal RF1-RX may have only the first received working frequency band, may have only the second received working frequency band, or may have both the first received working frequency band and the second received working frequency band. The second received radio frequency signal RF2-RX may have a third received working frequency band.
[0105] Optionally, the first receiving operating frequency band, the second receiving operating frequency band and the third receiving operating frequency band may be different.
[0106] For example, the first receiving working frequency band may be 1710 MHz to 1785 MHz, the second receiving working frequency band may be 1920 MHz to 1980 MHz, and the third receiving working frequency band may be 2500 MHz to 2570 MHz.
[0107] For another example, the first receiving working frequency band may be 703 MHz to 733 MHz, the second receiving working frequency band may be 832 MHz to 862 MHz, and the third receiving working frequency band may be 880 MHz to 915 MHz.
[0108] In the embodiment of the present application, the frequency of the first received radio frequency signal RF1-RX may be 1800 MHz and 2100 MHz, and the frequency of the second received radio frequency signal RF2-RX may be 2600 MHz.
[0109] It can be seen that the transceiver 10 provided in the embodiment of the present application can also be used as a receiving end to receive the first received RF signal RF1-RX and / or the second received RF signal RF2-RX. For the combiner 15, the first received RF signal RF1-RX and the second received RF signal RF2-RX can be used as input signals of the combiner 15. For the quadplexer 13, the first received RF signal RF1-RX from the combiner 15 can be used as an input signal of the quadplexer 13. Similarly, for the duplexer 14, the second received RF signal RF2-RX from the combiner 15 can be used as an input signal of the duplexer 14. Finally, the first received RF signal RF1-RX and / or the second received RF signal RF2-RX are input to the transceiver 10 through the receiving channel 16.
[0110] In some embodiments, the quadplexer 13 may include a first transmit filter 131, a second transmit filter 132, a first receive filter 133, and a second receive filter 134. Figure 2 shown.
[0111] Optionally, the first transmit filter 131 may be configured to transmit a first transmit radio frequency signal RF1-TX in a first transmit operating frequency band (eg, 1800 MHz) to the combiner 15 .
[0112] The second transmit filter 132 may be configured to transmit the first transmit radio frequency signal RF1-TX of the second transmit operating frequency band (eg, 2100 MHz) to the combiner 15 .
[0113] The first receiving filter 133 may be configured to transmit a first receiving radio frequency signal RF1-RX in a first receiving operating frequency band (eg, 1800 MHz) to the receiving channel 16 .
[0114] The second receiving filter 134 may be configured to transmit the first receiving radio frequency signal RF1-RX in the second receiving operating frequency band (eg, 2100 MHz) to the receiving channel 16 .
[0115] It can be seen that the quadplexer 13 may include four filters, and the four filters may work independently. Among them, the first transmit filter 131 and the second transmit filter 132 may be used to transmit the first transmit RF signal RF1-TX, and the first receive filter 133 and the second receive filter 134 may be used to receive the first receive RF signal RF1-RX.
[0116] Exemplarily, the first transmit filter 131 , the second transmit filter 132 , the first receive filter 133 , and the second receive filter 134 may all be dielectric filters or metal cavity filters, etc., which is not limited in the embodiment of the present application.
[0117] In some other examples, the duplexer 14 may include a third transmit filter 142 and a third receive filter 141. Figure 2 shown.
[0118] Optionally, the third transmit filter 142 may be configured to transmit a second transmit radio frequency signal RF2-TX in a third transmit operating frequency band (eg, 2600 MHz) to the combiner 15 .
[0119] The third receiving filter 141 may be configured to transmit the second receiving radio frequency signal RF2-RX in a third receiving operating frequency band (eg, 2600 MHz) to the receiving channel 16 .
[0120] It can be seen that the duplexer 14 may include two filters, and the two filters may work independently.
[0121] Exemplarily, the third transmit filter 142 and the third receive filter 141 may also be dielectric filters or metal cavity filters, etc., which is not limited in the embodiment of the present application.
[0122] Continue to refer Figure 2 The combiner 15 may include a first transceiver filter 151 and a second transceiver filter 152 .
[0123] Optionally, the first transceiver filter 151 can be used to: output the first transmit RF signal RF1-TX, and can also be used to transmit the first receive RF signal RF1-RX to the quadplexer 13. It can be seen that the first transceiver filter 151 not only plays the role of sending the first transmit RF signal RF1-TX from the quadplexer 14 to the antenna ANT, etc., but also plays the role of receiving the first receive RF signal RF1-RX from the antenna ANT, etc.
[0124] The second transceiver filter 152 can be used to: output the second transmit RF signal RF2-TX, and can also be used to transmit the second receive RF signal RF1-RX to the duplexer 14. It can be seen that, similar to the first transceiver filter 151, the second transceiver filter 152 not only plays the role of sending the second transmit RF signal RF2-TX from the duplexer 12 to the antenna ANT, etc., but also plays the role of receiving the second receive RF signal RF2-RX from the antenna ANT, etc.
[0125] In comparison, the third transmitting operating frequency band (e.g., 2600 MHz) of the second transmitting RF signal RF2-TX is higher than the first transmitting operating frequency band (e.g., 1800 MHz) and the second transmitting operating frequency band (e.g., 2100 MHz) of the first transmitting RF signal RF1-TX. Therefore, the first transceiver filter 151 can be called a low-pass filter, and the second transceiver filter 152 can be called a high-pass filter.
[0126] Exemplarily, the first transceiver filter 151 and the second transceiver filter 152 may both be dielectric filters or metal cavity filters, etc., which is not limited in the embodiment of the present application.
[0127] In a possible implementation, the first transmitting module 11 may include a first transmitting channel 111 and a first amplifier 112. The first transmitting channel 111 and the first amplifier 112 may be connected in series.
[0128] Optionally, the first transmitting channel 111 may be used to output a first transmitting radio frequency signal RF1-TX and transmit the first transmitting radio frequency signal RF1-TX to the first amplifier 112 .
[0129] The first amplifier 112 may be configured to amplify the first transmit radio frequency signal RF1-TX and transmit the amplified signal to the quadplexer 13 .
[0130] It can be understood that the first amplifier 112 can be a power amplifier, etc., which can amplify the first transmit radio frequency signal RF1-TX in the first transmit working frequency band and the second transmit working frequency band.
[0131] In another possible implementation, similar to the first transmitting module 11, the second transmitting module 12 may include a second transmitting channel 121 and a second amplifier 122. The second transmitting channel 121 and the second amplifier 122 may be connected in series.
[0132] Optionally, the second transmitting channel 121 may be used to output a second transmitting radio frequency signal RF1-TX and transmit it to the second amplifier 122 .
[0133] The second amplifier 122 may be configured to amplify the second transmit radio frequency signal RF2-TX and transmit the amplified signal to the duplexer 14 .
[0134] It can be understood that the second amplifier 122 can also be a power amplifier, etc., which can amplify the second transmit radio frequency signal RF2-TX in the third transmit operating frequency band.
[0135] Furthermore, if Figure 3 As shown, the first transmitting channel 111 and the second transmitting channel 121 may include a first digital signal processing module 1, a digital-to-analog converter 2, a reconstruction filter 3, a first variable gain amplifier 4 and a power amplifier module 5. The power amplifier module 5 may include a plurality of power amplifiers connected in series.
[0136] Optionally, the first digital signal processing module 1, the digital-to-analog converter 2, the reconstruction filter 3, the first variable gain amplifier 4 and the power amplification module 5 may be connected in sequence.
[0137] The first digital signal processing module 1 can be used to process the digital signal (filtering, frequency conversion, etc.) to obtain a processed digital signal DS1.
[0138] The digital-to-analog converter 2 may be used to convert the processed digital signal DS1 into a radio frequency signal RF1.
[0139] The reconstruction filter 3 can be used to filter the radio frequency signal RF1 to remove the Nyquist image signal output by the digital-to-analog converter 2, and obtain a filtered radio frequency signal RF2.
[0140] The first variable gain amplifier 4 can be used to amplify the gain of the filtered RF signal RF2 to obtain a gain-amplified RF signal RF3. It is conceivable that the first variable gain amplifier can also compensate for the gain of the RF channel and can play a role in power control of the transmitted RF signal (which can be the first transmitted RF signal RF1-TX or the second transmitted RF signal RF2-TX).
[0141] The power amplification module 5 can be used to amplify the power of the gain-amplified radio frequency signal RF3 to obtain a first transmit radio frequency signal RF1-TX or a second transmit radio frequency signal RF2-TX.
[0142] Exemplarily, the receiving channel 16 may include a low noise amplifier module 161, a radio frequency filter 162, a mixer 163, a second variable gain amplifier 164, an anti-aliasing filter 165, an analog-to-digital converter 166, a second digital signal processing module 167 and a phase-locked loop 168. Figure 4 The low noise amplifier module 161 may include a plurality of low noise amplifiers connected in series.
[0143] Optionally, the low noise amplifier module 161, the RF filter 162, the mixer 163, the second variable gain amplifier 164, the anti-aliasing filter 165, the analog-to-digital converter 166, and the second digital signal processing module 167 can be connected in sequence, and the phase-locked loop 168 can be connected to the mixer 163.
[0144] Among them, the low noise amplification module 161 can be used to: perform low noise amplification on the first received RF signal RF1-RX or the second received RF signal RF2-RX to obtain the first received RF signal RF11-RX or the second received RF signal RF21-RX after low noise amplification.
[0145] The RF filter 162 can be used to filter the first received RF signal RF11-RX or the second received RF signal RF21-RX after low-noise amplification, and filter out interference signals such as image frequency and out-of-band blocking to obtain the filtered first received RF signal RF111-RX or the second received RF signal RF211-RX.
[0146] The phase-locked loop 168 may be used to provide a local oscillator (LO) signal (abbreviated as LO) for the mixer 163 .
[0147] The mixer 163 can be used to perform frequency conversion on the filtered first received RF signal RF111-RX or the second received RF signal RF211-RX according to the local oscillator signal LO to obtain a first received intermediate frequency (IF) signal IF1-RX or a second received intermediate frequency signal IF2-RX.
[0148] The second variable gain amplifier 164 can be used to amplify the gain of the first received intermediate frequency signal IF1-RX or the second received intermediate frequency signal IF2-RX to obtain the first received intermediate frequency signal IF11-RX or the second received intermediate frequency signal IF21-RX after gain amplification. It can be imagined that the second variable gain amplifier 164 can also play the role of automatic gain control (AGC).
[0149] The anti-aliasing filter 165 can be used to filter the first received intermediate frequency signal IF11-RX or the second received intermediate frequency signal IF21-RX after gain amplification to filter out the Nyquist aliasing interference signal and obtain the filtered first received intermediate frequency signal IF111-RX or the second received intermediate frequency signal IF211-RX.
[0150] The analog-to-digital converter 166 may be used to convert the filtered first received intermediate frequency signal IF111-RX or the second received intermediate frequency signal IF211-RX into a digital signal DS2.
[0151] The second digital signal processing module can be used to process (filter, frequency convert, etc.) the digital signal DS2 to obtain a processed digital signal DS3.
[0152] In one example, the first transceiver filter 151 and the second transceiver filter 152 are metal cavity filters, which can also be understood as the combiner 15 can be implemented by a metal cavity. Figure 5 As shown, the horizontal axis represents frequency and the vertical axis represents amplitude. Curve F1 represents the insertion loss and suppression degree of the first transceiver filter 151. Figure 5 It can be seen that the first transceiver filter 151 can provide a suppression degree of more than 30 dB in both the receiving working frequency band and the transmitting working frequency band of 2600 MHz. Thus, the suppression degree of the first transmitting filter 131 and the second transmitting filter 132 in the receiving working frequency band of 2600 MHz can be reduced, and the suppression degree of the first receiving filter 133 and the second receiving filter 134 in the transmitting working frequency band of 2600 MHz can also be reduced, thereby further reducing the difficulty of implementing the quadplexer 13.
[0153] Similar, such as Figure 6 As shown, the horizontal axis represents frequency and the vertical axis represents amplitude. Curve F2 represents the insertion loss and suppression degree of the second transceiver filter 152. Figure 6 It can be seen that the second transceiver filter 152 has a suppression degree of more than 30 dB in both the receiving working frequency band and the transmitting working frequency band of 1800 MHz and 2100 MHz. Thus, the suppression degree of the third transmitting filter 142 in the receiving working frequency band of 1800 MHz and 2100 MHz can be reduced, and the suppression degree of the third receiving filter 141 in the transmitting working frequency band of 1800 MHz and 2100 MHz can also be reduced, thereby further reducing the difficulty of implementing the duplexer 14.
[0154] An embodiment of the present application provides a remote radio unit (RRU), which may include the above-mentioned transceiver 10.
[0155] Furthermore, the embodiment of the present application also provides a base station, such as Figure 7 The base station 100 may include a baseband unit (BBU) 101 and the above-mentioned radio remote unit RRU 102. The baseband unit BBU 101 may be connected to the radio remote unit RRU 102.
[0156] Optionally, the base station 10 may further include a power supply, which may supply power to the baseband processing unit BBU101 and the radio remote unit RRU102.
[0157] In an example, the base station 100 may serve as a receiving end, and a user equipment (UE) may send a radio frequency signal (ie, the first received radio frequency signal RF1-RX mentioned above) to the base station 100. It can be seen that the first received radio frequency signal RF1-RX may be transmitted uplink.
[0158] In another example, the base station 100 may serve as a transmitter and may send a first transmit radio frequency signal RF1-TX to a UE. It can be seen that the first transmit radio frequency signal RF1-TX may be transmitted downlink.
[0159] Exemplarily, the base station 100 provided in the embodiment of the present application may be a frequency division duplexing (FDD) base station supporting B1, B3 and B7, that is, a triple-band FDD base station.
[0160] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
Claims
1. A transceiver, characterized in that: It includes a first transmitting module, a second transmitting module, a quadplexer, a duplexer and a combiner; The first transmitting module is connected to the quadplexer, the second transmitting module is connected to the duplexer, and both the quadplexer and the duplexer are connected to the combiner.
2. The transceiver according to claim 1, characterized in that: The first transmitting module is used to: transmit a first transmitting radio frequency signal to the quadplexer; The second transmitting module is used to: transmit a second transmitting radio frequency signal to the duplexer; The quadplexer is used to: transmit the first transmit RF signal to the combiner; The duplexer is used to: transmit the second transmit radio frequency signal to the combiner; The combiner is used to output the first transmit radio frequency signal and / or the second transmit radio frequency signal.
3. The transceiver according to claim 2, characterized in that: The first transmitting radio frequency signal has a first transmitting operating frequency band and / or a second transmitting operating frequency band, and the second transmitting radio frequency signal has a third transmitting operating frequency band; The first transmitting operating frequency band, the second transmitting operating frequency band and the third transmitting operating frequency band are different.
4. The transceiver according to claim 3, characterized in that: The transceiver also includes a receiving channel; The combiner is further used to: receive a first received RF signal and transmit it to the quadplexer, and / or receive a second received RF signal and transmit it to the duplexer; wherein the first received RF signal has a first received operating frequency band and / or a second received operating frequency band, and the second received RF signal has a third received operating frequency band; The first receiving working frequency band, the second receiving working frequency band and the third receiving working frequency band are different. The quadplexer is further used to: transmit the first received RF signal to the receiving channel; The duplexer is further configured to transmit the second received radio frequency signal to the receiving channel.
5. The transceiver according to claim 4, characterized in that: The quadplexer includes a first transmit filter, a second transmit filter, a first receive filter, and a second receive filter; The first transmit filter is used to: transmit the first transmit radio frequency signal in the first transmit operating frequency band to the combiner; The second transmit filter is used to: transmit the first transmit radio frequency signal of the second transmit working frequency band to the combiner; The first receiving filter is used to: transmit the first receiving radio frequency signal in the first receiving working frequency band to the receiving channel; The second receiving filter is used to transmit the first receiving radio frequency signal in the second receiving working frequency band to the receiving channel.
6. The transceiver according to claim 4 or 5, characterized in that: The duplexer includes a third transmit filter and a third receive filter; The third transmit filter is used to: transmit the second transmit radio frequency signal of the third transmit working frequency band to the combiner; The third receiving filter is used to transmit the second receiving radio frequency signal in the third receiving working frequency band to the receiving channel.
7. The transceiver according to any one of claims 4 to 6, characterized in that: The combiner includes a first transceiver filter and a second transceiver filter; The first transceiver filter is used to: output the first transmit RF signal, and also to transmit the first receive RF signal to the quadplexer; The second transceiver filter is used to output the second transmit radio frequency signal and transmit the second receive radio frequency signal to the duplexer.
8. The transceiver according to any one of claims 3 to 7, characterized in that: The first transmitting working frequency band is 1805 MHz to 1880 MHz, the second transmitting working frequency band is 2110 MHz to 2170 MHz, and the third transmitting working frequency band is 2620 MHz to 2690 MHz.
9. The transceiver according to any one of claims 4 to 7, characterized in that: The first receiving working frequency band is 1710 MHz to 1785 MHz, the second receiving working frequency band is 1920 MHz to 1980 MHz, and the third receiving working frequency band is 2500 MHz to 2570 MHz.
10. The transceiver according to any one of claims 1 to 9, characterized in that: The first transmitting module includes a first transmitting channel and a first amplifier; The first transmitting channel is used to: output the first transmitting radio frequency signal and transmit it to the first amplifier; The first amplifier is used to amplify the first transmit radio frequency signal and transmit the amplified signal to the quadplexer.
11. The transceiver according to claim 10, characterized in that: The second transmitting module includes a second transmitting channel and a second amplifier; The second transmitting channel is used to: output the second transmitting radio frequency signal and transmit it to the second amplifier; The second amplifier is used to amplify the second transmit radio frequency signal and transmit the amplified signal to the duplexer.
12. The transceiver according to claim 11, characterized in that: The first transmission channel and the second transmission channel both include a first digital signal processing module, a digital-to-analog converter, a reconstruction filter, a first variable gain amplifier and a power amplification module; The first digital signal processing module, the digital-to-analog converter, the reconstruction filter, the first variable gain amplifier and the power amplification module are connected in sequence.
13. The transceiver according to any one of claims 4 to 7, characterized in that: The receiving channel includes a low noise amplifier module, a radio frequency filter, a mixer, a second variable gain amplifier, an anti-aliasing filter, an analog-to-digital converter, a second digital signal processing module and a phase-locked loop; The low-noise amplifier module, the radio frequency filter, the mixer, the second variable gain amplifier, the anti-aliasing filter, the analog-to-digital converter, and the second digital signal processing module are connected in sequence, and the phase-locked loop is connected to the mixer.
14. A radio remote unit, characterized in that: Comprising a transceiver as claimed in any one of claims 1 to 13.
15. A base station, characterized in that: The invention comprises a baseband processing unit and a radio remote unit as claimed in claim 14, wherein the baseband processing unit is connected to the radio remote unit.