A system for realizing large bandwidth transceiver function based on power splitter carrier aggregation

Abstract

The present invention relates to a system for realizing a large-bandwidth transceiver function based on power splitter carrier aggregation, comprising a front power splitter, multiple RX radio frequency links, a baseband processing unit, multiple TX radio frequency links and a rear power splitter. The front power splitter is used to output radio frequency signals with equal power to the multiple RX radio frequency links. Each RX radio frequency link is configured with a bandwidth of each RX radio frequency link and transmitted to the baseband processing unit. The baseband processing unit processes the bandwidth separately. The TX radio frequency link performs gain adjustment on the received signal. The rear power splitter performs carrier aggregation on the radio frequency signal and outputs it. The system for realizing a large-bandwidth transceiver function based on power splitter carrier aggregation of the present invention is adopted. The output bandwidth of the carrier aggregation of the invention is large and the output bandwidth can be further expanded. The signals of multiple links are carrier aggregated based on the power splitter, which saves costs and is suitable for commercial production.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to the field of wireless communication radio frequency transceiver technology, and specifically refers to a system that realizes large-bandwidth transceiver functions based on power splitter carrier aggregation. Background Art

[0002] With the development of communication technology, carrier aggregation (CA) is increasingly used in current LTE, 5G and possible future communication technologies in order to make full use of spectrum resources.

[0003] 4G transmission bandwidth is only 20MHz. Carrier aggregation technology can combine two to five LTE subcarriers to achieve a maximum transmission bandwidth of 100MHz. 5G FR1 and FR2 transmission bandwidths can be 100MHz and 400MHz, respectively. For enterprise broadband services in millimeter wave client devices, 400MHz bandwidth is still insufficient and may even require 800MHz of transmission bandwidth.

[0004] Traditional LTE carrier aggregation for mobile portable devices is primarily used for downlink carrier aggregation. For mid-band downlink carrier aggregation, a quadplexer is required. Today, CA is typically implemented within the digital baseband. While increased bandwidth exponentially increases baseband speeds, it also increases power consumption and resource requirements. Both the traditional use of quadplexers and the current digital baseband-based CA implementations are costly, hindering commercialization.

[0005] Although the transmission bandwidth of sub-6G and millimeter wave frequency bands in 5G has been expanded, it is still not wide enough and has low scalability; the methods of using quadplexers to achieve LTE downlink carrier aggregation and carrier aggregation based on digital baseband are relatively expensive and not suitable for large-scale promotion in the commercial field. Summary of the Invention

[0006] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a system that can realize large-bandwidth transceiver functions based on power splitter carrier aggregation, which has high scalability, low cost and wide application range.

[0007] In order to achieve the above objectives, the system of the present invention for realizing large bandwidth transceiver function based on power splitter carrier aggregation is as follows:

[0008] The system for realizing large-bandwidth transceiver function based on power splitter carrier aggregation has the following main features: the system includes a front power splitter, multiple RX radio frequency links, a baseband processing unit, multiple TX radio frequency links and a rear power splitter.

[0009] The output ends of the pre-power splitter are respectively connected to multiple RX radio frequency links, the output ends of the multiple RX radio frequency links are all connected to the baseband processing unit, the output ends of the baseband processing unit are respectively connected to multiple TX radio frequency links, and the output ends of the multiple TX radio frequency links are all connected to the post-power splitter;

[0010] The front power splitter is used to output the RF signal and equal power to multiple RX RF links. Each RX RF link is configured with the bandwidth of each RX RF link and transmitted to the baseband processing unit. The baseband processing unit processes the bandwidth separately. The TX RF link adjusts the gain of the received signal. The rear power splitter performs carrier aggregation on the RF signal and outputs it.

[0011] Preferably, the RX radio frequency chain includes a first power divider, a first preamplifier, a first digitally controlled attenuator, and a first postamplifier, wherein the output end of the first power divider is connected to the first preamplifier, the output end of the first preamplifier is connected to the first digitally controlled attenuator, and the output end of the first digitally controlled attenuator is connected to the first postamplifier;

[0012] The first power divider is used to transmit the radio frequency link signal, the first preamplifier is used to amplify small signals, bypass large signals, and adjust the gain of the received signal, the first digitally controlled attenuator is used to adjust the gain to stabilize the output power, and the first postamplifier is used to adjust the gain of the received signal.

[0013] Preferably, the first preamplifier includes two stages of amplifiers with bypass switches, and the bypass switches switch the signal into two paths, one of which amplifies the signal and the other allows the signal to pass directly.

[0014] Preferably, the first post-amplifier is composed of a first-stage amplifier with a bypass switch.

[0015] Preferably, the TX radio frequency link includes a fixed attenuator, a second preamplifier, a second digitally controlled attenuator, a second postamplifier, and a second power splitter, wherein the output end of the fixed attenuator is connected to the second preamplifier, the output end of the second preamplifier is connected to the second digitally controlled attenuator, the output end of the second digitally controlled attenuator is connected to the second postamplifier, and the output end of the second postamplifier is connected to the second power splitter;

[0016] The fixed attenuator is used to adjust the gain of the received signal and output the signal with large dynamic range. The second preamplifier is used to amplify small signals, bypass large signals, and adjust the gain of the received signal. The second digitally controlled attenuator is used to adjust the gain so that the output power is stable. The second postamplifier is used to adjust the gain of the received signal.

[0017] Preferably, the second preamplifier comprises an amplifier with a bypass switch, and the bypass switch switches the signal into two paths, one of which amplifies the signal and the other allows the signal to pass directly.

[0018] Preferably, the second post-amplifier is composed of a group of amplifiers with bypass switches.

[0019] The system of the present invention is based on power splitter carrier aggregation to achieve large-bandwidth transceiver functions. The output bandwidth of the carrier aggregation of this invention is large and the output bandwidth can be further expanded; based on the power splitter, the signals of multiple links are carrier aggregated, which saves costs and is suitable for commercial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of a system for implementing large-bandwidth transceiver functions based on power splitter carrier aggregation according to the present invention.

[0021] Figure 2 Schematic diagram of the RX radio frequency link of the system for realizing large-bandwidth transceiver function based on power splitter carrier aggregation of the present invention.

[0022] Figure 3 Schematic diagram of the TX radio frequency link of the system for realizing large-bandwidth transceiver function based on power splitter carrier aggregation of the present invention.

[0023] Figure 4 This is a test result diagram of the system of the present invention that realizes large-bandwidth transceiver function based on power splitter carrier aggregation. DETAILED DESCRIPTION

[0024] In order to more clearly describe the technical content of the present invention, further description is given below in conjunction with specific embodiments.

[0025] The system of the present invention for realizing large-bandwidth transceiver function based on power splitter carrier aggregation includes a front-end power splitter, multiple RX radio frequency links, a baseband processing unit, multiple TX radio frequency links and a rear-end power splitter.

[0026] The output ends of the pre-power splitter are respectively connected to multiple RX radio frequency links, the output ends of the multiple RX radio frequency links are all connected to the baseband processing unit, the output ends of the baseband processing unit are respectively connected to multiple TX radio frequency links, and the output ends of the multiple TX radio frequency links are all connected to the post-power splitter;

[0027] The front power splitter is used to output the RF signal and equal power to multiple RX RF links. Each RX RF link is configured with the bandwidth of each RX RF link and transmitted to the baseband processing unit. The baseband processing unit processes the bandwidth separately. The TX RF link adjusts the gain of the received signal. The rear power splitter performs carrier aggregation on the RF signal and outputs it.

[0028] As a preferred embodiment of the present invention, the RX radio frequency chain includes a first power divider, a first preamplifier, a first digitally controlled attenuator, and a first postamplifier, wherein the output end of the first power divider is connected to the first preamplifier, the output end of the first preamplifier is connected to the first digitally controlled attenuator, and the output end of the first digitally controlled attenuator is connected to the first postamplifier;

[0029] The first power divider is used to transmit the radio frequency link signal, the first preamplifier is used to amplify small signals, bypass large signals, and adjust the gain of the received signal, the first digitally controlled attenuator is used to adjust the gain to stabilize the output power, and the first postamplifier is used to adjust the gain of the received signal.

[0030] As a preferred embodiment of the present invention, the first preamplifier includes two stages of amplifiers with bypass switches, and the bypass switches switch the signal into two paths, one of which amplifies the signal and the other allows the signal to pass directly.

[0031] As a preferred embodiment of the present invention, the first post-amplifier is composed of a first-stage amplifier with a bypass switch.

[0032] As a preferred embodiment of the present invention, the TX radio frequency link includes a fixed attenuator, a second preamplifier, a second digitally controlled attenuator, a second postamplifier and a second power divider, wherein the output end of the fixed attenuator is connected to the second preamplifier, the output end of the second preamplifier is connected to the second digitally controlled attenuator, the output end of the second digitally controlled attenuator is connected to the second postamplifier, and the output end of the second postamplifier is connected to the second power divider;

[0033] The fixed attenuator is used to adjust the gain of the received signal and output the signal with large dynamic range. The second preamplifier is used to amplify small signals, bypass large signals, and adjust the gain of the received signal. The second digitally controlled attenuator is used to adjust the gain so that the output power is stable. The second postamplifier is used to adjust the gain of the received signal.

[0034] As a preferred embodiment of the present invention, the second preamplifier comprises an amplifier with a bypass switch, and the bypass switch switches the signal into two paths, one of which amplifies the signal and the other allows the signal to pass directly.

[0035] As a preferred embodiment of the present invention, the second post-amplifier is composed of a group of amplifiers with bypass switches.

[0036] In a specific embodiment of the present invention, a large-bandwidth transceiver system based on power splitter carrier aggregation has a wider bandwidth and higher scalability, while significantly reducing production costs.

[0037] like Figure 1 As shown in the figure, the transceiver system includes a pre-power splitter, an RX RF link, a TX RF link, a post-power splitter, and a baseband processing unit. RX stands for RX receive, which means receiving, and TX stands for TX receive, which means transmitting.

[0038] The preamplifier outputs the RF signal with an input bandwidth of 800MHz with equal power to four RX RF links, and the bandwidth of each RF channel is 200MHz.

[0039] like Figure 2 The RX radio frequency chain shown includes a first power divider, a first preamplifier, a first digitally controlled attenuator, and a first postamplifier.

[0040] The first power divider transmits the TDD radio frequency link signal and supplies the transmitted signal to a subsequent stage for processing.

[0041] The first preamplifier includes two stages of amplifiers that can be bypassed by switches, and its function is to amplify small signals, bypass large signals, and adjust the gain of the received signal. The switch can switch the signal into two paths, one for amplification and the other for direct transmission.

[0042] The attenuation value of the first digitally controlled attenuator has great dynamics, and the gain is adjusted to make the final output power stable.

[0043] The first post-amplifier includes a stage of amplifier that can be bypassed by a switch and performs gain adjustment on the received signal.

[0044] like Figure 3 The TX RF chain shown includes a fixed attenuator, a second preamplifier, a second digitally controlled attenuator, a second postamplifier, and a second power divider.

[0045] The fixed attenuator includes three bypassable fixed attenuators to adjust the gain of the received signal and output the signal with large dynamic range.

[0046] The second preamplifier includes a first-stage amplifier that can be bypassed by a switch, and its function is to amplify small signals, bypass large signals, and adjust the gain of the received signal. The switch can switch the signal into two paths, one for amplification and the other for direct transmission.

[0047] The attenuation value of the second digitally controlled attenuator has great dynamics, and the gain is adjusted to make the final output power stable.

[0048] The second post-amplifier includes a first stage of amplifier that can be bypassed by a switch and performs gain adjustment on the received signal.

[0049] Each baseband FPGA in the baseband processing unit processes 200MHz bandwidth.

[0050] The post-power splitter aggregates the 200MHz RF signals input by the four TX RF links through the power splitter to output an 800MHz RF signal.

[0051] The transceiver system of the present invention uses a pre-power splitter to output an 800MHz signal to four RX radio frequency links. The RF transceiver chip configures the bandwidth of each radio frequency link to 200MHz and transmits it to the baseband for processing. The baseband output signal passes through the four TX radio frequency links and is then carrier-aggregated using a power splitter to output an 800MHz signal. This method not only widens the signal transmission bandwidth and improves scalability, but also significantly reduces production costs.

[0052] like Figure 4 The figure shows the test results of the uncorrected signal output bandwidth of 800MHz.

[0053] The specific implementation scheme of this embodiment can be found in the relevant descriptions in the above embodiments and will not be repeated here.

[0054] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0055] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is at least two.

[0056] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0057] The system of the present invention is based on power splitter carrier aggregation to achieve large-bandwidth transceiver functions. The output bandwidth of the carrier aggregation of this invention is large and the output bandwidth can be further expanded; based on the power splitter, the signals of multiple links are carrier aggregated, which saves costs and is suitable for commercial production.

[0058] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it will be apparent that various modifications and variations may be made without departing from the spirit and scope of the present invention. Accordingly, the specification and drawings are to be regarded as illustrative rather than restrictive.

Claims

1. A system for realizing large bandwidth transceiver function based on power splitter carrier aggregation, characterized in that: The system includes a front power splitter, a multi-channel RX radio frequency link, a baseband processing unit, a multi-channel TX radio frequency link and a rear power splitter. The output ends of the pre-power splitter are respectively connected to multiple RX radio frequency links, the output ends of the multiple RX radio frequency links are all connected to the baseband processing unit, the output ends of the baseband processing unit are respectively connected to multiple TX radio frequency links, and the output ends of the multiple TX radio frequency links are all connected to the post-power splitter; The pre-power splitter is used to output the RF signal with equal power to multiple RX RF links. The multiple RX RF links configure the bandwidth of each RX RF link and transmit it to the baseband processing unit. The baseband processing unit processes the bandwidth separately. The TX RF link adjusts the gain of the received signal. The post-power splitter performs carrier aggregation on the RF signal and outputs it. The RX radio frequency chain includes a first power divider, a first preamplifier, a first digitally controlled attenuator, and a first postamplifier, wherein the output end of the first power divider is connected to the first preamplifier, the output end of the first preamplifier is connected to the first digitally controlled attenuator, and the output end of the first digitally controlled attenuator is connected to the first postamplifier; The first power divider is used to transmit the radio frequency link signal, the first preamplifier is used to amplify small signals, bypass large signals, and adjust the gain of the received signal, the first digitally controlled attenuator is used to adjust the gain to stabilize the output power, and the first postamplifier is used to adjust the gain of the received signal.

2. The system for realizing large bandwidth transceiver function based on power splitter carrier aggregation according to claim 1, characterized in that: The first preamplifier includes two stages of amplifiers with bypass switches. The bypass switches switch the signal into two paths, one of which amplifies the signal and the other allows the signal to pass directly.

3. The system for realizing large bandwidth transceiver function based on power splitter carrier aggregation according to claim 1, characterized in that: The first post-amplifier is composed of a first-stage amplifier with a bypass switch.

4. The system for realizing large bandwidth transceiver function based on power splitter carrier aggregation according to claim 1, characterized in that: The TX radio frequency link includes a fixed attenuator, a second preamplifier, a second digitally controlled attenuator, a second postamplifier, and a second power divider, wherein the output end of the fixed attenuator is connected to the second preamplifier, the output end of the second preamplifier is connected to the second digitally controlled attenuator, the output end of the second digitally controlled attenuator is connected to the second postamplifier, and the output end of the second postamplifier is connected to the second power divider; The fixed attenuator is used to adjust the gain of the received signal and output the signal with large dynamic range. The second preamplifier is used to amplify small signals, bypass large signals, and adjust the gain of the received signal. The second digitally controlled attenuator is used to adjust the gain so that the output power is stable. The second postamplifier is used to adjust the gain of the received signal.

5. The system for realizing large bandwidth transceiver function based on power splitter carrier aggregation according to claim 4, characterized in that: The second preamplifier comprises a group of amplifiers with bypass switches. The bypass switches switch the signal into two paths, one of which amplifies the signal and the other allows the signal to pass directly.

6. The system for realizing large bandwidth transceiver function based on power splitter carrier aggregation according to claim 4, characterized in that: The second post-amplifier is composed of a first-stage amplifier with a bypass switch.

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