Transceiver, remote radio unit, and base station

Abstract

The present application provides a transceiver, a remote radio unit, and a base station. The suppression degree of a first transmitting filter and a second transmitting filter in a third receiving working frequency band can be reduced; moreover, the structure is simple, and the sizes of a quadplexer and a duplexer are small, thereby reducing the manufacturing and assembly difficulty of the transceiver, and reducing the cost. The transceiver comprises 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 the quadplexer and the duplexer are both connected to the combiner. The first transmitting module is used for transmitting a first transmit radio frequency signal to the quadplexer. The second transmitting module is used for transmitting a second transmit radio frequency signal to the duplexer. The quadplexer is used for transmitting the first transmit radio frequency signal to the combiner. The duplexer is used for transmitting the second transmit radio frequency signal to the combiner. The combiner is used for outputting the first transmit radio frequency signal and / or the second transmit radio frequency signal.

Description

Transceivers, remote radio units, and base stations Technical Field

[0001] The present application relates to the field of communication technology, and more particularly, to a transceiver, a radio remote unit and a base station. Background Art

[0002] With the ever-increasing demand for mobile bandwidth capacity, ultra-wideband multi-band base stations have been widely used to meet the need for base station antenna simplification, reduce the number of radio remote units (RRUs) in base stations, and lower base station deployment costs. Ultra-wideband multi-band base stations often need to operate in multiple operating frequency bands (including transmit or receive operating bands). For example, an ultra-wideband multi-band base station can simultaneously operate in the three operating frequency bands of 700MHz, 800MHz, and 900MHz, or it can simultaneously operate in the three operating frequency bands of 1800MHz, 2100MHz, and 2600MHz. In order to transmit or receive radio frequency signals, the transceiver in the radio remote unit also needs to operate in multiple operating frequency bands simultaneously.

[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 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 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 bands is 2340MHz to 2535MHz, and there is an overlapping range of 35MHz between 2340MHz to 2535MHz and the B7 receiving working band (that is, 2500MHz to 2535MHz). In other words, the frequency of the third-order intermodulation signal of the B1 and B3 transmission working bands will hit the B7 receiving working band. As a result, RF filters operating in the 1800MHz and 2100MHz transmit bands exhibit significant suppression in the 2600MHz receive band. Furthermore, the hexaplexer's complex topology and large size make 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.

[0005] Summary of the Invention

[0006] 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 quadplexer and the duplexer are each small in size, making the manufacturing and assembly of the transceiver easy and low-cost.

[0007] In a first aspect, the present application provides a transceiver that may include a first transmitting module, a second transmitting module, a quadplexer, a duplexer, and a combiner. 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 may be connected to the combiner.

[0008] The transceiver provided in this application can output a first transmit RF signal and / or a second transmit RF signal through a quadplexer, a duplexer, and a combiner. Compared to the hexaplexer used in related art, the transceiver provided in this application, through the use of separate quadplexers and duplexers, not only reduces the quadplexer's suppression in the third receive operating frequency band, but also has a simple structure. The quadplexer and duplexer are each relatively small, making the transceiver easier to manufacture and assemble and reducing costs.

[0009] In a possible implementation, the first transmitting module may be configured to transmit the first transmit radio frequency signal to the quadplexer.

[0010] Similarly, the second transmitting module can be used to transmit the second transmit radio frequency signal to the duplexer.

[0011] The quadplexer may be configured to transmit the first transmit radio frequency signal to the combiner.

[0012] The duplexer may be configured to transmit the second transmit radio frequency signal to the combiner.

[0013] The combiner can be configured to output a first transmit RF signal and / or a second transmit RF signal. That is, if only the first transmit module outputs the first transmit RF signal, the combiner can output the first transmit RF signal. If only the second transmit module outputs the second transmit RF signal, the combiner can output the second transmit RF signal. If the first transmit module outputs the first transmit RF signal and the second transmit module outputs the second transmit RF signal, the combiner can output both the first transmit RF signal and the second transmit RF signal.

[0014] 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.

[0015] In one possible implementation, the first transmit RF signal may have a first transmit operating frequency band and / or a second transmit operating frequency band. That is, the first transmit RF signal may have only the first transmit operating frequency band, only the second transmit operating frequency band, or both the first transmit operating frequency band and the second transmit operating frequency band. The second transmit RF signal may have a third transmit operating frequency band.

[0016] Optionally, the first transmit operating frequency band, the second transmit operating frequency band, and the third transmit operating frequency band may be different.

[0017] 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.

[0018] For another example, the first transmission operating frequency band may be 738 MHz to 788 MHz, the second transmission operating frequency band may be 791 MHz to 821 MHz, and the third transmission operating frequency band may be 925 MHz to 960 MHz.

[0019] In another possible implementation, the transceiver provided in this application may further include a receiving channel.

[0020] Optionally, the combiner may further be configured 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. In other words, the combiner may receive only the first received RF signal and transmit it to the quadplexer, or may receive only 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.

[0021] The quadplexer may also be configured to transmit the first received radio frequency signal to a receiving channel.

[0022] The duplexer may also be configured to transmit the second received radio frequency signal to the receiving channel.

[0023] The first received RF signal may have a first receiving operating frequency band and / or a second receiving operating frequency band. That is, the first received RF signal may have only the first receiving operating frequency band, only the second receiving operating frequency band, or both the first receiving operating frequency band and the second receiving operating frequency band. The second received RF signal may have a third receiving operating frequency band.

[0024] Optionally, the first receiving operating frequency band, the second receiving operating frequency band and the third receiving operating frequency band may be different.

[0025] For example, the first receiving operating frequency band may be 1710 MHz to 1785 MHz, the second receiving operating frequency band may be 1920 MHz to 1980 MHz, and the third receiving operating frequency band may be 2500 MHz to 2570 MHz.

[0026] For another example, the first receiving operating frequency band may be 703 MHz to 733 MHz, the second receiving operating frequency band may be 832 MHz to 862 MHz, and the third receiving operating frequency band may be 880 MHz to 915 MHz.

[0027] 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 the input signal of the quadplexer. Similarly, for a duplexer, the second received RF signal from the combiner can be used as the input signal of the duplexer. Ultimately, the first received RF signal and / or the second received RF signal are input to the transceiver through the receiving channel.

[0028] 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.

[0029] Optionally, the first transmit filter may be configured to transmit a first transmit radio frequency signal in a first transmit operating frequency band to a combiner.

[0030] The second transmit filter may be configured to transmit the first transmit radio frequency signal in the second transmit operating frequency band to the combiner.

[0031] The first receiving filter may be configured to transmit a first receiving radio frequency signal in a first receiving operating frequency band to a receiving channel.

[0032] 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.

[0033] It can be seen that the quadplexer may include four filters, and the four filters can operate 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.

[0034] 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 this application.

[0035] In another possible implementation, the duplexer may include a third transmit filter and a third receive filter.

[0036] Optionally, the third transmit filter may be configured to transmit the second transmit radio frequency signal in the third transmit operating frequency band to the combiner.

[0037] The third receiving filter may be configured to transmit the second receiving radio frequency signal in the third receiving operating frequency band to the receiving channel.

[0038] It can be seen that the duplexer may include two filters, and the two filters may operate independently.

[0039] 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 this application.

[0040] In yet another possible implementation, the combiner may include a first transceiver filter and a second transceiver filter.

[0041] Optionally, the first transceiver filter can be used to output the first transmit RF signal and transmit the first receive RF signal to the quadplexer. As can be seen, the first transceiver filter not only transmits the first transmit RF signal from the quadplexer to the antenna, etc., but also receives the first receive RF signal from the antenna, etc.

[0042] The second transceiver filter can be used to output the second transmit RF signal and transmit the second receive RF signal to the duplexer. Similar to the first transceiver filter, the second transceiver filter not only transmits the second transmit RF signal from the duplexer to the antenna, etc., but also receives the second receive RF signal from the antenna, etc.

[0043] 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.

[0044] Exemplarily, both the first transceiver filter and the second transceiver filter may be dielectric filters or metal cavity filters, etc., which are not limited in this application.

[0045] 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.

[0046] Optionally, the first transmitting channel may be configured to output a first transmitting radio frequency signal and transmit the signal to the first amplifier.

[0047] The first amplifier may be configured to amplify the first transmit radio frequency signal and transmit the amplified signal to the quadplexer.

[0048] 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 operating frequency band and the second transmit operating frequency band.

[0049] 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.

[0050] Optionally, the second transmitting channel may be used to: output a second transmitting radio frequency signal and transmit it to the second amplifier.

[0051] The second amplifier may be configured to amplify the second transmit radio frequency signal and transmit the amplified signal to the duplexer.

[0052] 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 operating frequency band.

[0053] 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.

[0054] 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.

[0055] The first digital signal processing module may be used to process the digital signal (filtering, frequency conversion, etc.) to obtain a processed digital signal.

[0056] The digital-to-analog converter can be used to convert the processed digital signal into a radio frequency signal.

[0057] 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 and obtain a filtered radio frequency signal.

[0058] 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.

[0059] The power amplification module can be used to amplify the power of the radio frequency signal after gain amplification to obtain a first transmit radio frequency signal or a second transmit radio frequency signal.

[0060] In one 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 multiple low-noise amplifiers connected in series.

[0061] 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.

[0062] The low-noise amplification module may be configured to perform low-noise amplification on the first received radio frequency signal or the second received radio frequency signal to obtain the first received radio frequency signal or the second received radio frequency signal after low-noise amplification.

[0063] 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.

[0064] The phase-locked loop can be used to: provide a local oscillator signal for the mixer.

[0065] 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.

[0066] 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 function as an automatic gain control (AGC).

[0067] 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 remove the Nyquist aliasing interference signal and obtain the filtered first received intermediate frequency signal or the second received intermediate frequency signal.

[0068] 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.

[0069] The second digital signal processing module can be used to process the digital signal (filtering, frequency conversion, etc.) to obtain a processed digital signal.

[0070] 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 implementations thereof.

[0071] In a third aspect, the present application provides a base station, which may include a baseband processing unit (BBU) and a radio remote unit (RRU) provided in the second aspect and possible implementations thereof. The baseband processing unit may be connected to the RRU.

[0072] Optionally, the base station may further include a power supply, which may supply power to the baseband processing unit and the radio remote unit.

[0073] It should be understood that the second and third aspects of this application are consistent with the technical solutions of the first aspect of this 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

[0074] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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.

[0075] FIG1 is a schematic diagram of a receiving frequency band of B7 in which a third-order intermodulation signal in the transmitting frequency bands of B1 and B3 hits the receiving frequency band of B7 in the related art;

[0076] FIG2 is a schematic structural diagram of the transceiver 10 in an embodiment of the present application;

[0077] FIG3 is a schematic structural diagram of the first emission channel 111 and the second emission channel 121 in an embodiment of the present application;

[0078] FIG4 is a schematic structural diagram of the receiving channel 16 in an embodiment of the present application;

[0079] FIG5 is a schematic diagram of the insertion loss and rejection of the first transceiver filter 151 in an embodiment of the present application;

[0080] FIG6 is a schematic diagram of the insertion loss and suppression of the second transceiver filter 152 in an embodiment of the present application;

[0081] FIG7 is a schematic structural diagram of the base station 100 in an embodiment of the present application. DETAILED DESCRIPTION

[0082] The technical solution in this application will be described below with reference to the accompanying drawings.

[0083] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0084] The terms "first," "second," and the like in the description, embodiments, claims, and drawings of this application are used solely for descriptive purposes and are not to be construed as indicating or implying relative importance or order. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions, such as, for example, inclusion of a series of steps or units. A method, system, product, or apparatus is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0085] It should be understood that in this 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 previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items 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.

[0086] With the ever-increasing demand for mobile bandwidth capacity, ultra-wideband multi-band base stations have been widely used to meet the need for base station antenna simplification, reduce the number of radio remote units (RRUs) in base stations, and lower base station deployment costs. Ultra-wideband multi-band base stations often need to operate in multiple operating frequency bands (including transmit or receive operating bands). For example, an ultra-wideband multi-band base station can simultaneously operate in the three operating frequency bands of 700MHz, 800MHz, and 900MHz, or it can simultaneously operate in the three operating frequency bands of 1800MHz, 2100MHz, and 2600MHz. In order to transmit or receive radio frequency signals, the transceiver in the radio remote unit also needs to operate in multiple operating frequency bands simultaneously.

[0087] The transceiver provided by the related art transmits or receives radio frequency signals through at least two amplifiers and a hexaplexer. One of the amplifiers will simultaneously support the transmit operating frequency bands of 1805MHz to 1880MHz (that is, the aforementioned 1800MHz, which can be represented by B3 (i.e., band3)) and 2110MHz to 2170MHz (that is, the aforementioned 2100MHz, represented by B1 (i.e., band1)), and the other amplifier can support the transmit operating frequency band of 2620MHz to 2690MHz (that is, the aforementioned 2600MHz, represented by B7 (i.e., band7)). As shown in Figure 1, the frequency range of the third-order intermodulation signals of the B1 and B3 transmit operating frequency bands is 2340MHz to 2535MHz. There is a 35MHz overlap between 2340MHz to 2535MHz and the B7 receive operating frequency band, that is, 2500MHz to 2535MHz, as shown in the diagonal line portion in Figure 1. In other words, the frequency of the third-order intermodulation signals of the B1 and B3 transmit operating frequency bands will hit the B7 receive operating frequency band. As a result, RF filters operating in the 1800MHz and 2100MHz transmit bands exhibit significant suppression in the 2600MHz receive band. Furthermore, the hexaplexer's complex topology and large size make manufacturing and assembly of the transceiver difficult and costly.

[0088] To overcome the above-mentioned shortcomings, an embodiment of the present application provides a transceiver, as shown in 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.

[0089] 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 .

[0090] Similarly, the second transmitting module 12 can be used to transmit a second transmit radio frequency signal (which can be represented by RF2-TX) to the duplexer 14 .

[0091] The quadplexer 13 may be configured to transmit the first transmit radio frequency signal RF1-TX to the combiner 15 .

[0092] The duplexer 14 may be configured to transmit the second transmit radio frequency signal RF2-TX to the combiner 15 .

[0093] The combiner 15 can be configured to output the first transmit RF signal RF1-TX and / or the second transmit RF signal RF2-TX. That is, if only the first transmit module 11 outputs the first transmit RF signal RF1-TX, the combiner 15 can output the first transmit RF signal RF1-TX. If only the second transmit module 12 outputs the second transmit RF signal RF2-TX, the combiner 15 can output the second transmit RF signal RF2-TX. If the first transmit module 11 outputs the first transmit RF signal RF1-TX and the second transmit module 12 outputs the second transmit RF signal RF2-TX, the combiner 15 can output both the first transmit RF signal RF1-TX and the second transmit RF signal RF2-TX.

[0094] It can be seen that the transceiver 10 provided in the embodiment of the present application can serve as a transmitting end, and output the first transmit RF signal RF1-TX and / or the second transmit RF signal RF2-TX. For the first transmitting module 11, the first transmit RF signal RF1-TX can be used as the output signal of the first transmitting module 11. Similarly, for the second transmitting module 12, the second transmit RF signal RF2-TX can be used as the output signal of the second transmitting module 12. For the quadplexer 13, the first transmit RF signal RF1-TX from the first transmitting module 11 can be used as the input signal of the quadplexer 13. Similarly, for the duplexer 14, the second transmit RF signal RF2-TX from the second transmitting module 12 can be used as the input signal of the duplexer 14. For the combiner 15, the first transmit RF signal RF1-TX from the quadplexer 13 and the second transmit 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 and the like through the combiner 15 .

[0095] The transceiver 10 provided in the embodiment of the present application can output the first transmit RF signal RF1-TX and / or the second transmit RF signal RF2-TX through a quadplexer 13, a duplexer 14, and a combiner 15. Compared to the hexaplexer used in related art, the transceiver 10 provided in the embodiment of the present application, through the use of separate quadplexers 13 and duplexers 14, not only can reduce the suppression of the quadplexer 13 in the third receive operating frequency band, but also has a simple structure. The quadplexer 13 and duplexer 14 are each relatively small in size, making the manufacture and assembly of the transceiver 10 simple and cost-effective.

[0096] In some embodiments, the first transmit RF signal RF1-TX may have a first transmit operating frequency band and / or a second transmit operating frequency band. That is, the first transmit RF signal RF1-TX may have only the first transmit operating frequency band, only the second transmit operating frequency band, or both the first transmit operating frequency band and the second transmit operating frequency band. The second transmit RF signal RF2-TX may have a third transmit operating frequency band.

[0097] Optionally, the first transmit operating frequency band, the second transmit operating frequency band, and the third transmit operating frequency band may be different.

[0098] 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.

[0099] For another example, the first transmission operating frequency band may be 738 MHz to 788 MHz, the second transmission operating frequency band may be 791 MHz to 821 MHz, and the third transmission operating frequency band may be 925 MHz to 960 MHz.

[0100] In the embodiment of the present application, the frequency of the first transmit RF signal RF1-TX may be 1800 MHz and 2100 MHz, and the frequency of the second transmit RF signal RF2-TX may be 2600 MHz.

[0101] In other embodiments, the transceiver 10 provided in the embodiment of the present application may further include a receiving channel 16, as shown in FIG. 2 .

[0102] Optionally, the combiner 15 may also be configured to receive a first receive (RX) radio frequency (RF) signal (which may be represented by RF1-RX) and transmit it to the quadplexer 13, and / or receive a second receive RF signal (which may be represented by RF2-RX) and transmit it to the duplexer 14. That is, the combiner 15 may receive only the first receive RF signal RF1-RX and transmit it to the quadplexer 13, or may receive only the second receive RF signal RF2-RX and transmit it to the duplexer 14, or may receive the first receive RF signal RF1-RX and transmit it to the quadplexer 13 and receive the second receive RF signal RF1-RX and transmit it to the duplexer 14.

[0103] The quadplexer 13 may also be configured to transmit the first received radio frequency signal RF1-RX to the receiving channel 16 .

[0104] The duplexer 14 may also be configured to transmit the second received radio frequency signal RF2-RX to the receiving channel 16 .

[0105] The first received RF signal RF1-RX may have a first receiving operating frequency band and / or a second receiving operating frequency band. That is, the first received RF signal RF1-RX may have only the first receiving operating frequency band, only the second receiving operating frequency band, or both the first receiving operating frequency band and the second receiving operating frequency band. The second received RF signal RF2-RX may have a third receiving operating frequency band.

[0106] Optionally, the first receiving operating frequency band, the second receiving operating frequency band and the third receiving operating frequency band may be different.

[0107] For example, the first receiving operating frequency band may be 1710 MHz to 1785 MHz, the second receiving operating frequency band may be 1920 MHz to 1980 MHz, and the third receiving operating frequency band may be 2500 MHz to 2570 MHz.

[0108] For another example, the first receiving operating frequency band may be 703 MHz to 733 MHz, the second receiving operating frequency band may be 832 MHz to 862 MHz, and the third receiving operating frequency band may be 880 MHz to 915 MHz.

[0109] In the embodiment of the present application, the frequency of the first received RF signal RF1-RX may be 1800 MHz and 2100 MHz, and the frequency of the second received RF signal RF2-RX may be 2600 MHz.

[0110] It can be seen that the transceiver 10 provided in the embodiment of the present application can also serve 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 the 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 the 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.

[0111] 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 , as shown in FIG. 2 .

[0112] 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 .

[0113] The second transmit filter 132 may be configured to transmit the first transmit radio frequency signal RF1-TX in the second transmit operating frequency band (eg, 2100 MHz) to the combiner 15 .

[0114] The first receive filter 133 may be configured to transmit a first receive radio frequency signal RF1-RX in a first receive operating frequency band (eg, 1800 MHz) to the receive channel 16 .

[0115] The second receive filter 134 may be configured to transmit the first receive radio frequency signal RF1-RX in the second receive operating frequency band (eg, 2100 MHz) to the receive channel 16 .

[0116] As can be seen, the quadplexer 13 may include four filters, each of which can operate independently. A first transmit filter 131 and a second transmit filter 132 may be used to transmit a first transmit RF signal RF1-TX, and a first receive filter 133 and a second receive filter 134 may be used to receive a first receive RF signal RF1-RX.

[0117] 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.

[0118] In some other examples, the duplexer 14 may include a third transmit filter 142 and a third receive filter 141 , as shown in FIG. 2 .

[0119] Optionally, the third transmit filter 142 may be configured to transmit the second transmit radio frequency signal RF2-TX in a third transmit operating frequency band (eg, 2600 MHz) to the combiner 15 .

[0120] The third receive filter 141 may be configured to transmit the second receive radio frequency signal RF2-RX in a third receive operating frequency band (eg, 2600 MHz) to the receive channel 16 .

[0121] It can be seen that the duplexer 14 may include two filters, and the two filters may operate independently.

[0122] 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.

[0123] Continuing to refer to FIG. 2 , the combiner 15 may include a first transceiver filter 151 and a second transceiver filter 152 .

[0124] Optionally, the first transceiver filter 151 can be used to output the first transmit RF signal RF1-TX and transmit the first receive RF signal RF1-RX to the quadplexer 13. It can be seen that the first transceiver filter 151 not only transmits the first transmit RF signal RF1-TX from the quadplexer 14 to the antenna ANT, etc., but also receives the first receive RF signal RF1-RX from the antenna ANT, etc.

[0125] The second transceiver filter 152 can be used to output the second transmit RF signal RF2-TX and 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 transmits the second transmit RF signal RF2-TX from the duplexer 12 to the antenna ANT, etc., but also receives the second receive RF signal RF2-RX from the antenna ANT, etc.

[0126] In comparison, the third transmit operating frequency band (e.g., 2600 MHz) of the second transmit RF signal RF2-TX is higher than the first transmit operating frequency band (e.g., 1800 MHz) and the second transmit operating frequency band (e.g., 2100 MHz) of the first transmit 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.

[0127] 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.

[0128] 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.

[0129] Optionally, the first transmitting channel 111 may be configured to output a first transmitting radio frequency signal RF1-TX and transmit the signal to the first amplifier 112 .

[0130] 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 .

[0131] 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 operating frequency band and the second transmit operating frequency band.

[0132] 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.

[0133] Optionally, the second transmitting channel 121 may be configured to output a second transmitting radio frequency signal RF1-TX and transmit the signal to the second amplifier 122 .

[0134] 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 .

[0135] 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.

[0136] 3 , the first transmit channel 111 and the second transmit channel 121 may each 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.

[0137] 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.

[0138] 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.

[0139] The digital-to-analog converter 2 may be configured to convert the processed digital signal DS1 into a radio frequency signal RF1.

[0140] 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.

[0141] 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 perform 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).

[0142] 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.

[0143] 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, as shown in FIG4 . The low-noise amplifier module 161 may include multiple low-noise amplifiers connected in series.

[0144] 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.

[0145] The low noise amplification module 161 may be configured to perform low noise amplification on the first received RF signal RF1-RX or the second received RF signal RF2-RX to obtain the low noise amplified first received RF signal RF11-RX or the second received RF signal RF21-RX.

[0146] 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.

[0147] The phase-locked loop 168 may be configured to provide a local oscillator (LO) signal to the mixer 163 .

[0148] 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.

[0149] 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 is conceivable that the second variable gain amplifier 164 can also function as an automatic gain control (AGC).

[0150] 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.

[0151] The analog-to-digital converter 166 may be configured 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.

[0152] The second digital signal processing module can be used to process the digital signal DS2 (filtering, frequency conversion, etc.) to obtain a processed digital signal DS3.

[0153] In one example, the first transceiver filter 151 and the second transceiver filter 152 use metal cavity filters, which can also be understood as the combiner 15 can be implemented using a metal cavity. As shown in Figure 5, the horizontal axis represents frequency and the vertical axis represents amplitude. Curve F1 represents the insertion loss and suppression of the first transceiver filter 151. As can be seen from Figure 5, the first transceiver filter 151 can provide a suppression of more than 30dB in both the receiving working frequency band and the transmitting working frequency band of 2600MHz. Thereby, the suppression of the first transmitting filter 131 and the second transmitting filter 132 in the receiving working frequency band of 2600MHz can be reduced, and the suppression of the first receiving filter 133 and the second receiving filter 134 in the transmitting working frequency band of 2600MHz can also be reduced, thereby further reducing the difficulty of implementing the quadplexer 13.

[0154] Similarly, as shown in Figure 6, the horizontal axis represents frequency and the vertical axis represents amplitude. Curve F2 represents the insertion loss and suppression of the second transceiver filter 152. As can be seen from Figure 6, the second transceiver filter 152 has a suppression of more than 30 dB in both the receive and transmit operating frequency bands of 1800 MHz and 2100 MHz. This can reduce the suppression of the third transmit filter 142 in the receive operating frequency bands of 1800 MHz and 2100 MHz, and similarly reduce the suppression of the third receive filter 141 in the transmit operating frequency bands of 1800 MHz and 2100 MHz, thereby further reducing the difficulty of implementing the duplexer 14.

[0155] An embodiment of the present application provides a remote radio unit (RRU), which may include the transceiver 10 described above.

[0156] Furthermore, an embodiment of the present application also provides a base station, as shown in 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.

[0157] Optionally, the base station 10 may further include a power supply, which may supply power to the baseband processing unit BBU 101 and the radio remote unit RRU 102 .

[0158] In one 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.

[0159] In another example, the base station 100 may serve as a transmitter and may transmit a first transmit radio frequency signal RF1-TX to the UE. It can be seen that the first transmit radio frequency signal RF1-TX may be transmitted downlink.

[0160] Illustratively, 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.

[0161] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection 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.

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