WO2023065863A1

WO2023065863A1 - Receiving device, radio frequency system and communication device

Info

Publication number: WO2023065863A1
Application number: PCT/CN2022/117310
Authority: WO
Inventors: 王国龙
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-10-18
Filing date: 2022-09-06
Publication date: 2023-04-27
Also published as: CN113922828A; CN113922828B

Abstract

A receiving device, a radio frequency system and a communication device. The receiving device comprises: a filtering assembly, and a receiving and amplification assembly. The filtering assembly comprises: an input port, which is configured to receive a reception signal from an antenna; an on-chip filter, which is configured to perform filtering on the received reception signal so as to obtain a reception signal in a predetermined frequency band; and an output port, which is configured to send the reception signal in the predetermined frequency band to the receiving and amplification assembly. The receiving and amplification assembly is configured to perform power amplification on the reception signal in the predetermined frequency band and then output same.

Description

A receiving device, radio frequency system and communication equipment

technical field

This article relates to the field of radio frequency technology, in particular to a receiving device, a radio frequency system and communication equipment.

Background technique

With the development of the communication network, it is necessary to support each increasing communication network standard, but limited by the size constraints of the terminal equipment, the space of the motherboard PCB (Printed Circuit Board, printed circuit board) will not be as large as the communication network The increase of the standard increases accordingly, which will lead to a very tight space layout and wiring of the motherboard PCB.

Summary of the invention

The following is an overview of the subject matter described in detail in this application. This summary is not intended to limit the scope of the claims.

Embodiments of the present application provide a receiving device, a radio frequency system, and communication equipment, which can save space on a motherboard and reduce costs.

On the one hand, the embodiment of the present application provides a receiving device, including: a filtering component, a receiving amplifying component; the filtering component includes: an input port, configured to receive a received signal from an antenna; an on-chip filter, configured to receive The signal is filtered to obtain the received signal of the predetermined frequency band; the output port is set to send the received signal of the predetermined frequency band to the receiving amplifier component; the receiving amplifier component is set to amplify the power of the received signal of the predetermined frequency band and output it.

On the other hand, an embodiment of the present application provides a radio frequency system, including: an antenna, a transceiver, and the receiving device provided in the embodiment of the present application.

In another aspect, the embodiment of the present application provides a communication device, including the radio frequency system provided in the embodiment of the present application.

Compared with the related technology, in the embodiment of the present application, the receiving frame is optimized, and the filter is integrated into the filter component, so that the occupied motherboard area will not be increased due to the addition of the external filter, so the integration degree can be improved , to reduce costs; if the receiving device is set to receive signals of other frequency bands, the signals of different frequency bands output by multiple filter components can be matched in the same module, reducing the possibility of port mismatch and improving receiving performance.

Other aspects will be apparent to others upon reading and understanding the drawings and detailed description.

Figure overview

The accompanying drawings are used to provide an understanding of the technical solution of the present application, and constitute a part of the description, and are used together with the embodiments of the present application to explain the technical solution of the present application, and do not constitute a limitation to the technical solution of the present application.

Figure 1a is a schematic diagram of a receiving device provided by an embodiment of the present application;

Fig. 1b is a schematic diagram of a radio frequency system provided by an embodiment of the present application;

Figure 2 is one of the schematic diagrams of the FEM in the exemplary embodiment;

Figure 3a is a schematic diagram of a radio frequency system in a first example;

Fig. 3 b is a schematic diagram of the connection relationship of LB PA Mid in the first example;

Fig. 3c is a schematic diagram of the connection relationship of MHB PA Mid in the first example;

Fig. 3 d is a schematic diagram of the connection relationship of the main set receiving LNA BANK in the first example;

Figure 3e is a schematic diagram of the connection relationship of the FEM in the first example;

Fig. 3 f is a schematic diagram of the connection relationship of the diversity reception LNA BANK in the first example;

Fig. 4 is the second schematic diagram of FEM in the exemplary embodiment;

Fig. 5 is a schematic diagram of the connection relationship of FEM in the second example;

Fig. 6 is the third schematic diagram of FEM in the exemplary embodiment;

Fig. 7 is a schematic diagram of the connection relationship of FEM in the third example;

Figure 8 is a schematic diagram of LB PA Mid in an exemplary embodiment;

Fig. 9 a is a schematic diagram of the connection relationship of LB PA Mid in the fourth example;

Fig. 9b is a schematic diagram of the connection relationship of FEM in the fourth example;

Fig. 10 is a schematic diagram of a radio frequency system in a fifth example.

Explanation of reference signs:

10: transceiver; 11: antenna; 12: filter component; 13: receiving amplifier component; 121: input port; 122: on-chip filter; 1221: first filter; 1222: second filter; 123: output port ;21: LB PA Mid; 22: MHB PA Mid; 23: Main receiver LNA BANK; 24: FEM; 25: Diversity receiver LNA BANK; 31: First antenna; 32: Second antenna; 33: Third antenna; 34: fourth antenna; 41: first combiner; 42: second combiner; 43: third combiner; 44: fourth combiner; 50: N28 duplexer; 61: first N28 Filter; 62: second N28 filter; 63: third N28 filter; 211: LB PA Mid with built-in N28 filter; 241: one of FEMs with built-in N28 filter; 242: one of FEMs with built-in N28 filter Two; 243: The third of FEM with built-in N28 filter.

detail

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described below are only used to explain the present application, not to limit the present application.

It can be understood that in this application, the descriptions involving “first”, “second” and so on are only used for distinction in description, and cannot be understood as indicating or implying their relative importance or implicitly indicating the indicated technical features quantity. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

The receiving devices and radio frequency systems involved in the embodiments of the present application can be applied to communication devices with wireless communication functions; communication devices can include any one or more of the following: handheld devices, vehicle-mounted devices, wearable devices, computing devices, other processing Equipment, MS (Mobile Station, mobile station), each form of UE (User Equipment, user equipment); UE, for example, can be a mobile phone or a tablet computer.

The embodiment of the present application provides a receiving device, which is applied to the receiving path, as shown in Figure 1a, including:

Filtering component 12, receiving amplifying component 13;

Filter assembly 12 includes:

an input port 121 configured to receive a receive signal from the antenna;

The on-chip filter 122 is configured to filter the received signal to obtain a predetermined frequency band received signal;

The output port 123 is configured to send the received signal of the predetermined frequency band to the receiving and amplifying component 13;

The receiving amplifying component 13 is configured to amplify the received signal in a predetermined frequency band before outputting it.

In the embodiment of the present application, the receiving frame is optimized, and the on-chip filter 122 is integrated into the filter component 12, so that the occupied motherboard area will not be increased due to the addition of external filters, so the integration degree can be improved and the Cost; if the receiving device is set to receive signals of other frequency bands, the signals of different frequency bands output by multiple filter components 12 can be matched in the same module, reducing the possibility of port mismatch and improving receiving performance.

In the embodiment of the present application, the filtering component 12 can be understood to be arranged in a packaged chip, such as being arranged in a FEM (Front-end Module, front-end module) chip, PA Mid (Power Amplifier Modules including Duplexers, power amplifier module) chip, etc. device. The filtering function of the filtering component 12 can be realized by building an on-chip filter 122 in a FEM chip and/or a chip such as PA Mid. Wherein, the predetermined frequency band is related to the used on-chip filter, for example, if the on-chip filter is an N28 filter, N28 filtering is performed on the received signal to obtain the received signal in the N28 frequency band.

In an exemplary embodiment, when the received signal from the antenna includes a multi-input multi-output main set received signal, the filtering component 12 configured to receive the multi-input multi-output main set received signal is packaged in the power amplification module PA In Mid; when the received signal from the antenna includes a diversity received signal and/or an MIMO diversity received signal, the filtering assembly 12 configured to receive the diversity received signal and/or MIMO diversity received signal is encapsulated in In the radio frequency front-end module FEM, for example, the filter component 12 configured to receive the diversity reception signal is packaged in one FEM, and the filter component 12 configured to receive the multi-input multi-output diversity reception signal is packaged in another FEM.

This embodiment can improve the integration of the entire receiving framework. By encapsulating the filter components corresponding to the main set MIMO signal in the PA Mid, the filter components corresponding to the diversity receive signal and the diversity MIMO signal are packaged in the FEM, so that when it is also necessary to receive When signals of other frequency bands are used, signals of different frequency bands can be matched in the same chip, reducing the possibility of port mismatch and improving receiving performance.

In the embodiment of the present application, the receiving amplifier assembly 13 can be set in the LNA (Low Noise Amplifier, low noise amplifier) BANK (group) chip; the LNA BANK can be a receiving module integrating a low noise amplifier and a switch, and the low noise amplifier wherein The input end of the release path is connected to the output port 123 of the filter component 12 .

In the embodiment of the present application, the receiving path may correspond to the antenna used to receive the signal. When there is only one antenna, there may be one receiving path; when there are multiple antennas, there may be multiple receiving paths.

The embodiment of the present application also provides a radio frequency system, as shown in FIG. 1b, including a transceiver 10, an antenna 11, and a receiving device provided in the embodiment of the present application; wherein, the input port 121 of the filtering component 12 obtains a received signal from the antenna 11, The received signal of the predetermined frequency band is filtered by the on-chip filter 122 and sent to the receiving amplifier component 13 through the output port 123; the receiving amplifier component 13 amplifies the received signal of the predetermined frequency band and outputs it to the transceiver 10.

In the embodiment of the present application, the antenna 11 may be configured to support the reception and transmission of radio frequency signals in different frequency bands; the radio frequency signals may include 2G, 3G, 4G, 5G signals and the like. Antenna 11 can be an antenna with a resonant element in any structure, such as but not limited to one or more of the following: monopole antenna, dipole antenna, strip antenna, loop antenna, helical antenna, array antenna, patch antenna, slot antenna etc. Antennas with different structures can be set to different frequency bands or combinations of frequency bands.

In the embodiment of the present application, the radio frequency system may include a transmitting component that is independent or integrated with the filtering component in the same chip, and is configured to transmit the transmitting signal from the transceiver to the antenna.

In the embodiment of the present application, the transceiver 10 may add a port, which is connected to the output port 123, and is configured to receive a received signal of a predetermined frequency band filtered by a filter (external filter and/or on-chip filter).

In the embodiment of the present application, when there are multiple receiving channels, there are multiple receiving devices, corresponding to different receiving channels; and/or, there are multiple filtering components and/or receiving amplifier components in the receiving device, corresponding to Different receive paths.

In an exemplary embodiment, the on-chip filter 122 may be, but not limited to, an N28 filter; the received signal in the predetermined frequency band is the received signal in the N28 frequency band.

The wireless frequency of N28 is low, the wavelength is relatively long, the diffraction ability is strong, and the coverage ability is greater. It will become an important low-frequency coverage frequency band of the 5G network.

Since N28 is a relatively wide frequency band, in order to avoid adjacent channel interference during application, only part of the frequency band in N28 can be used, called N28A or N28B; in some application scenarios (such as LTE), B28 is also used instead of N28. The N28 frequency band in this article may be adaptively referred to as N28A, N28B, B28, B28A and other frequency bands according to different application scenarios.

In an exemplary embodiment, there are multiple receiving paths, corresponding to PRX (Primary Receive, main set receiving) signals and DRX (Diversity Receive, diversity receiving) signals respectively; there are multiple filtering components 12, corresponding to different receive path.

In this embodiment, there are two filtering components 12, but not limited to two, one is set to receive the main set reception signal and perform filtering to obtain the main set reception signal of a predetermined frequency band; the other is set to receive the diversity reception signal and perform filtering to obtain A diversity reception signal of a predetermined frequency band. In other embodiments, the filter component 12 may only be configured on the receiving path corresponding to the main set or the diversity receiving signal, and the receiving path corresponding to the diversity or main set receiving signal uses an external filter.

In this embodiment, in the case of including multiple filter components 12, the multiple filter components 12 can be set in the same chip or device, or the filter component 12 corresponding to the PRX signal can be set in one chip or device, The filter component 12 corresponding to the DRX signal is provided in another chip or device, or multiple filter components 12 may be provided in multiple chips or devices.

In an exemplary embodiment, in order to increase the download rate of the low-frequency network, MIMO (Multiple-Input Multiple-Output, Multiple-Input Multiple-Output) can be configured to obtain greater throughput. The MIMO function refers to the use of multiple transmitting antennas and receiving antennas, making full use of space resources, and realizing multiple transmission and multiple reception functions through multiple antennas, which can double the system channel capacity without increasing spectrum resources and antenna transmission power. .

In this embodiment, in the case of configuring MIMO, there are multiple receiving paths, which can correspond to different signals respectively. For example, the four receiving paths can respectively correspond to PRX signals, DRX signals, PRX MIMO signals, and DRX MIMO signals; Generally, the antenna 11 in the radio frequency system may include multiple antennas 11 corresponding to the receiving paths, for example, it may include 4 antennas, which are used in TX (transmission) and PRX links, DRX links, and PRX MIMO links respectively. In the road, in the DRX MIMO link. According to needs, one or more receiving channels and one or more antennas can be configured for each signal.

In this embodiment, there may be multiple filtering components 12, each corresponding to a different receiving channel. In other embodiments, when there are multiple receiving paths, only one filtering component 12 can be provided for one receiving path, and other receiving paths use external filters; or, any receiving path can correspond to one or more filtering components 12.

In an implementation of this embodiment, the number of filter components 12 may be, but not limited to, four, which are respectively configured to receive PRX signals, DRX signals, PRX MIMO signals, and DRX MIMO signals and perform filtering in a predetermined frequency band before outputting.

In another implementation manner of this embodiment, there are at least two filter components 12 , among the multiple receiving paths, some of the receiving paths use the filtering component 12 , and the rest of the receiving paths use external filters. For example, when the received signal from the antenna includes a diversity received signal and a MIMO diversity received signal, two filter components 12 are respectively set to receive the diversity received signal and the MIMO diversity received signal.

In this embodiment, multiple filtering components 12 can be set in the same chip or device; or the filtering component 12 corresponding to the PRX signal and PRX MIMO signal can be set in one chip or device, and the filtering component 12 corresponding to the DRX signal, DRX The filtering component 12 for MIMO signals is provided in another chip or device.

In an exemplary embodiment, there are multiple receiving paths and multiple receiving amplifying components, each corresponding to a different receiving path.

In an implementation manner of this embodiment, there are two receiving channels, corresponding to the PRX signal and the DRX signal respectively; correspondingly, there are two receiving amplifying components, which respectively amplify the PRX signal and the DRX signal of a predetermined frequency band and output them.

In another implementation of this embodiment, there are four receiving paths, corresponding to PRX signals, DRX signals, PRX MIMO, and DRX MIMO signals; correspondingly, there are four receiving and amplifying components, respectively corresponding to PRX signals of predetermined frequency bands, DRX Signal, PRX MIMO signal, and DRX MIMO signal are amplified and output.

In this embodiment, multiple receiving and amplifying components can be set in the same chip or device; or the receiving and amplifying components corresponding to the PRX signal and PRX MIMO signal can be set in one chip or device, and the receiving and amplifying components corresponding to the DRX signal, DRX The signal receiving and amplifying components of MIMO are set in another chip or device.

In an exemplary embodiment, the radio frequency system may further include: a combiner configured to divide the received signal entering from the antenna 11 into a low-frequency received signal and a medium-high frequency received signal.

In this embodiment, the input port of the filter component 12 may include a low-frequency input port and a mid-high frequency input port, or the filter component 12 may include a low-frequency filter component and a mid-high frequency filter component.

In an exemplary embodiment, the filter component 12 includes a plurality of on-chip filters 122 of different frequency bands and a plurality of output ports 123; the plurality of output ports 123 can be respectively connected to a plurality of on-chip filters of different frequency bands in a one-to-one manner. the output of the filter 122;

The receiving device 12 may also include: a toggle switch; the toggle switch includes at least one first contact and a plurality of second contacts; the first contact is connected to the input port 121, and the plurality of second contacts are respectively connected to chips of different frequency bands; The input terminal of inner filter 122.

In this embodiment, by switching the connection relationship between the first contact and the second contact in the switch, filters in multiple frequency bands can be selected, so that the receiving device can support multiple frequency bands.

In this embodiment, the filtering component 12 and the switching switch can be, but not limited to, arranged in the same module.

In an exemplary embodiment, the changeover switch may be a single-pole multiple-throw switch.

In an exemplary embodiment, the receiving amplifying assembly 13 is arranged in the LNA BANK; the receiving amplifying assembly 13 includes: a connected input port group and a low noise amplifier path; the output port 123 of the filtering assembly 12 passes through a port in the input port group Connect to the input end of the low-noise amplifier channel; the low-noise amplifier channel is set to perform low-noise power amplification on the received signal of a predetermined frequency band and then output it.

In an exemplary embodiment, the filter assembly 12 can be arranged in the FEM, the input port 121 can be the antenna port of the FEM, and the output port 123 can be the output port of a predetermined frequency band on the FEM; the on-chip filter 122 is connected to the low-frequency antenna port and the output port of the predetermined frequency band.

In an implementation manner of this embodiment, the received signal includes a DRX low-frequency signal, and the received signal of a predetermined frequency band includes a DRX signal of a predetermined frequency band; the input port 121 can be the low-frequency antenna port LB ANT of the FEM, and the output port 123 can be the LB ANT on the FEM. The output port of the predetermined frequency band is, for example but not limited to, the N28 OUT port; the on-chip filter 122 is connected between the low-frequency antenna port and the output port of the predetermined frequency band.

In this embodiment, the receiving and amplifying component 13 can be set in the first LNA BANK, and the first LNA BANK is also referred to as a diversity receiving LNA BANK in this paper, and the diversity receiving mentioned here includes DRX and DRX MIMO. The first LNA BANK includes the connected first low-frequency input port group LB1 IN and the first low-frequency low-noise amplifier path; the N28 OUT port of the FEM is connected to the input of the first low-frequency low-noise amplifier path through a port in the first low-frequency input port group end; the first low-frequency low-noise amplifier path is set to perform low-noise power amplification on the N28 DRX signal and output it to the transceiver 10.

In this embodiment, in the first low-frequency input port group, ports other than the connection output port 123 may be connected to DRX low-frequency signals of other frequency bands or left floating.

In this embodiment, the FEM can also include a switch, which includes at least one first contact, connected to LB ANT, and also includes a plurality of second contacts; one of the second contacts is connected to the on-chip filter 122 input terminal.

In this implementation manner, the changeover switch may be a single-pole multiple-throw switch.

In an example of this embodiment, the FEM provided with the filter assembly is shown in Figure 2, the on-chip filter 122 is an N28 filter; the switch is a single-pole five-throw switch SP5T; there may also be a ground in the second contact, A low-frequency port LB AUX1 connected to the FEM. In this example, the FEM may also include a digital logic unit ASM RFFE arranged for logic control.

In an example of this embodiment, all or part of the other second contacts in the switch can be connected to the filter input terminals of other frequency band signals, so as to support the reception of multiple frequency bands; the output terminal of the on-chip filter 122 is directly connected to the FEM The N28 OUT port.

In this embodiment, the first LNA BANK can also include a first single-pole multi-throw switch; the first low-noise amplifier path can include a first low-frequency low-noise amplifier LB1LNA, a first data selector, and a first low-frequency output port LB1 OUT;

Wherein, the first single-pole multi-throw switch may include a first contact and a plurality of second contacts, the first contact is connected to the input end of the first low-frequency low-noise amplifier, and the plurality of second contacts are respectively connected to the first low-frequency input Different ports in the port group are connected; the output end of the first low-frequency low-noise amplifier is connected to the first low-frequency output port through the first data selector, and connected to the transceiver 10 through the first low-frequency output port.

The following uses the first example to illustrate this embodiment. The radio frequency system of this example is shown in Figure 3a. ) 22, main collection receiving LNA BANK 23 (LNA BANK#1 in Fig. 3a, also referred to as the second LNA BANK in this paper), FEM 241, diversity receiving LNA BANK 25 (LNA BANK#2 in Fig. 3a); the antenna includes The first antenna 31, the second antenna 32, the third antenna 33, and the antenna 31; the radio frequency system also includes a first combiner 41, a second combiner 42, a third combiner 43, and a fourth combiner 44 , N28 duplexer 50, first and second N28 filters 61, 62. Among them, the connection relations of LB PA Mid 21, MHB PA Mid 22, main set receiving LNA BANK 23, FEM 241, and diversity receiving LNA BANK 25 in the radio frequency system are shown in Figure 3b, Figure 3c, Figure 3d, Figure 3e, and Figure 3f respectively shown. The first and second N28 filters 61 and 62 are external filters. The FEM 241 includes an on-chip N28 filter.

In the first example, the first antenna 31 is respectively connected to the LB PA Mid 21 and the MHB PA Mid 22 through the first combiner 41; the LB PA Mid 21 is externally connected to the N28 duplexer 50, and the N28 duplexer 50 is connected to the main receiving LNA The first low frequency input port LB1IN2 of BANK 23. The signal received by the second antenna 32 is divided into low-frequency and medium-high frequency two paths by the second combiner 42, and is connected to the second low-frequency input port LB0 of the main set receiving LNA BANK 23 through the first N28 filter 61 and the high-frequency filter respectively IN1 and high frequency input port. The signal received by the third antenna 33 is divided into low-frequency and medium-high frequency two paths through the third combiner 43, which are respectively connected to the low-frequency antenna port LB ANT of the FEM 241 and the medium-high frequency antenna port MHB ANT, and the LB ANT port of the FEM 241 is connected to the FEM 241 The input end of the N28 filter in the N28 filter, the N28A OUT of the FEM 241 connected to the output end of the N28 filter is connected to the first low-frequency input port LB1 IN2 of the diversity reception LNA BANK 25. The signal received by the fourth antenna 34 is divided into low-frequency and medium-high frequency two paths by the fourth combiner 44, and is respectively connected to the second low-frequency input port LB0 IN1 of the diversity receiving LNA BANK 25 through the second N28 filter 62 and the high-frequency filter and high-frequency input ports.

The working principle of the first example is described in detail below.

TX (Transmit, transmit) link: (1) the transmit signal is output from the TX0LB1 port of the transceiver 10; (2) reaches the 4G LB RFIN port of the LB PA Mid 21 through the radio frequency line; (3) in the LB PA Mid 21, The transmit signal is amplified by the power amplifier 4G LB PA and reaches the single-port contact 9 of the single-pole eight-throw switch SP8T; (4) The single port of the switch is switched to contact 4, so that the transmit signal reaches the N28 duplex from the LB TX OUT4 port (5) The transmitting signal passes through the N28 duplexer 50 to the LB TRX4 port of LB PA Mid 21, and is connected to the contact 4 of the single-pole nine-throw switch SP9T; (6) The contact 4 of the switch is switched to a single-port contact Point 10, the transmit signal is output from the LB ANT port of LB PA Mid 21; (7) transmit the signal to the first combiner 41 through Path02; (8) transmit the signal to the first antenna through Path01 through the first combiner 41 31.

PRX link: (1) The receiving signal of the main set enters from the first antenna 31, and reaches the first combiner 41 through Path01; (2) The low-frequency signal received by the main set is separated from the first combiner 41 and output to the LB PA The LB ANT port of Mid 21 is connected to the single-port contact 10 of the single-pole nine-throw switch SP9T in LB PA Mid 21; (3) SP9T is switched to contact 4, and the main set receives low-frequency signals from the LB TRX4 port to the N28 double The duplexer 50 reaches the LB1 IN2 port of the main set receiving LNA BANK 23 through the N28 duplexer 50, and this port is connected to the contact 3 of the single-pole four-throw switch SP4T in the main set receiving LNA BANK 23; (4) the switch will touch Point 3 is switched to single-port contact 1, and the low-frequency signal received by the N28 main set reaches the LB1LNA channel in the main set receiving LNA BANK 23; (5) After the low-frequency signal received by the N28 main set is amplified by the LB1LNA, it is sent from the main set by the data selector MUX1 Receive the LB1 OUT port output of LNA BANK 23; (6) enter the transceiver 10 through the SDR PRXE port.

DRX link: (1) The diversity reception signal enters from the third antenna 33, passes through the path Path05, and reaches the third combiner 43; (2) splits the diversity reception low-frequency signal from the third combiner 43, and arrives through the path Path06 The LB ANT port of FEM 241, which is connected to the single-port contact 6 of the single-pole five-throw switch SP5T in FEM 241; (3) The switch is switched to contact 3, so that the diversity reception low-frequency signal is filtered by N28 in FEM 241 (4) The filtered diversity receiving low-frequency signal reaches the LB1 IN2 port of the diversity receiving LNA BANK 25 through RF wiring, and this port is connected to the single-pole four-throw in the diversity receiving LNA BANK 25 Contact 3 of switch SP4T; (5) the switch switches contact 3 to single-port contact 1, so that the filtered diversity reception low-frequency signal reaches the LB1LNA channel in diversity reception LNA BANK 25; (6) the filtered After the diversity receiving low-frequency signal is amplified by LB1LNA, the data selector MUX1 is output from the LB1 OUT port of the diversity receiving LNA BANK 25; (7) the amplified signal enters the transceiver 10 through the SDR DRXE port.

PRX MIMO link: (1) The receiving signal of the main set of MIMO enters from the second antenna, passes through the path Path03, and reaches the second combiner 42; (2) the low-frequency MIMO signal of the main set received by the second combiner 42 passes through After filtering by the first N28 filter 61, it goes to the main set receiving LNA BANK 23 through the path Path04; (3) the main set receiving low-frequency MIMO signal after filtering enters the main set receiving LNA BANK 23 through the LB0 IN1 port, and reaches No. 3 SP3 Throw the contact 3 of the switch SP3T#3; (4) The switch is switched to the single-port contact 1, so that the filtered main set receives the low-frequency MIMO signal to reach the LB0LNA channel in the main set receive LNA BANK 23; (5) filter After the main set receives the low-frequency MIMO signal and is amplified by LB0LNA, the data selector MUX2 receives the LB0 OUT port output of the LNA BANK 23 from the main set; (6) enters the transceiver 10 through the SDR PRX10 port.

DRX MIMO link: (1) The MIMO diversity receiving signal enters from the fourth antenna, passes through the path Path07, and reaches the fourth combiner 44; (2) the diversity receiving low-frequency MIMO signal separated by the fourth combiner 44 passes through the second After filtering by the N28 filter 62, it reaches the diversity receiving LNA BANK 25 through the path Path08; (3) the filtered diversity receiving low-frequency MIMO signal enters the diversity receiving LNA BANK 25 through the LB0 IN1 port, and reaches the No. 3 single-pole three-throw switch SP3T#3 (4) The switch is switched to single-port contact 1, so that the filtered diversity reception low-frequency MIMO signal reaches the LB0LNA path in the diversity reception LNA BANK 25; (5) the filtered diversity reception low-frequency MIMO signal After being amplified by LB0LNA, it is output from the LB0 OUT port of the diversity receiving LNA BANK 25 through the data selector MUX2; (6) enters the transceiver 10 through the SDR DRX10 port.

In the first example, only one filter component is included, and the filter component is arranged in the FEM 241. The N28 filter in the FEM 241 is the on-chip filter 122 in the filter component, which is set to carry out N28 filtering for the diversity reception low-frequency signal; the filter component The input port is the low-frequency antenna port LB ANT of FEM241, or includes the low-frequency antenna port LB ANT of FEM241 and the single-pole five-throw switch SP5T; the output port is the N28A OUT port of FEM 241.

In an exemplary embodiment, the filtering assembly 12 can be arranged in the FEM, and the input port 121 can be the input port of the FEM; the output port 123 can be the output port of the FEM; the on-chip filter 122 is connected to the input port and the output port of the FEM between ports.

In an implementation of this embodiment, the received signal includes a DRX MIMO low-frequency signal, and the received signal of a predetermined frequency band includes a DRX MIMO signal of a predetermined frequency band; the input port 121 includes a low-frequency input port LB AUX IN of the FEM; the output port 123 includes a FEM Low frequency output port LB AUX OUT; the on-chip filter is connected between LB AUX IN and LB AUX OUT.

In this embodiment, the receiving amplifying component 13 can be arranged in the first LNA BANK, and the first LNA BANK is called the diversity receiving LNA BANK again herein; the first LNA BANK includes the second low-frequency input port group LB0 IN connected and the second The second low-frequency low-noise amplifier path; the LB AUX OUT of the FEM is connected to the input end of the second low-frequency low-noise amplifier path through a port in the second low-frequency input port group; the second low-frequency low-noise amplifier path is set to perform N28 DRX MIMO signal The low noise power is amplified and output to the transceiver 10 .

In this embodiment, in the second low-frequency input port group, other ports except for connecting the output port 123 can be connected to DRX MIMO low-frequency signals of other frequency bands or left floating.

In this embodiment, the FEM can also include a switch; the switch includes at least one first contact, connected to the LB ANT, and also includes a plurality of second contacts; one of the second contacts is connected to the N28 filter.

In this implementation manner, the switching switch may be a single-pole multi-throw switch.

In an example of this embodiment, the FEM provided with the filtering assembly is shown in Figure 4, and the on-chip filter 122 is an N28 filter; the switch can be a single-pole five-throw switch SP5T, and the switch includes a The first contact, and five second contacts; one of the second contacts is grounded, and the two are respectively connected to the low-frequency ports LB AUX1 and LB AUX2 of the FEM, where LB AUX2 can be connected to the diversity through the external N28 filter The receiving LNA BANK includes the connected first low-frequency input port group LB1 IN; the other two contacts can be connected to the filter input terminals of other frequency band signals. The input end of the on-chip filter 122 is directly connected to LB AUX IN, and the output end is directly connected to LB AUX OUT. In this example, the FEM may also include a digital logic unit ASM RFFE arranged for logic control.

In this embodiment, the diversity reception LNA BANK can also include a second single-pole multi-throw switch; the second low-frequency low-noise amplifier path includes a second low-frequency input port group LB0 IN, a second low-frequency low-noise amplifier LB0LNA, a second data selector, The second low frequency output port LB0OUT;

Wherein, the second single-pole multi-throw switch may include a first contact and a plurality of second contacts, the first contact is connected to the input end of the second low-frequency low-noise amplifier, and the plurality of second contacts are respectively connected to the second low-frequency input Different ports in the port group are connected; the output end of the second low-frequency low-noise amplifier is connected to the second low-frequency output port through the second data selector, and connected to the transceiver 10 through the second low-frequency output port.

The second example is used to illustrate this embodiment below. In the radio frequency system of this example, the transceiver 10 is respectively connected to LB PA Mid 21, MHB PA Mid 22, main set receiving LNA BANK 23, FEM 242, and diversity receiving LNA BANK 25; this example Among them, the antenna includes a first antenna 31, a second antenna 32, a third antenna 33, and a fourth antenna 34; the radio frequency system also includes a first combiner 41, a second combiner 42, a third combiner 43, The fourth combiner 44, the N28 duplexer 50, the first and the third N28 filters 61, 63. Among them, the connection relationship of LB PA Mid 21, MHB PA Mid 22, main set receiving LNA BANK 23, and diversity receiving LNA BANK 25 in the radio frequency system can be seen in the first example and shown in Figure 3b, Figure 3c, Figure 3d, and Figure 3f ; FEM 242 adopts the FEM shown in Figure 4. The first and third N28 filters 61 and 63 are all external filters. The FEM 242 includes an on-chip N28 filter.

The difference with the first example is that the second example no longer has an external second N28 filter 62, and the signal received by the fourth antenna 34 is separated by the fourth combiner 44 through the low-frequency received signal of the path Path08 to the FEM 242. LB AUX IN port, N28 filtering is completed by the filter 122 in FEM 242; the diversity receiving LNA BANK 25 is connected with the second N28 filter 62 in the first example, and changed to LB AUX of FEM 242 in the second example OUT port connection; In addition, FEM 242 adopts the FEM shown in Figure 4 instead, so compared with the first example, the third N28 filter 63 that is added outside is added, and the LB ANT port of FEM 242 passes through the third combiner 43 from The third antenna 33 receives diversity reception low-frequency signals, and the received low-frequency reception signals are filtered by N28 through the third N28 filter 63, and then sent to the diversity reception LNA BANK 25; the connection relationship of FEM 242 in the radio frequency system is as shown in Figure 5 .

In the second example, the first antenna 31 is respectively connected to the LB PA Mid 21 and the MHB PA Mid 22 through the first combiner 41; the LB PA Mid 21 is externally connected to the N28 duplexer 50, and the N28 duplexer 50 is connected to the main receiver LNA The first low frequency input port of BANK 23. The signal received by the second antenna 32 is divided into low-frequency and medium-high frequency two paths by the second combiner 42, and is connected to the second low-frequency input port LB0 of the main set receiving LNA BANK 23 through the first N28 filter 61 and the high-frequency filter respectively IN1 and high frequency input port. The signal received by the third antenna 33 is divided into low-frequency and medium-high frequency two paths by the third combiner 43, which are respectively connected to the low-frequency antenna port LB ANT and the medium-high frequency antenna port MHB ANT of the FEM 242; the low-frequency signal is output from the FEM 242 and passed through the Three N28 filters 63 receive the first low-frequency input port LB1 IN2 of the LNA BANK 25 in diversity. The signal received by the fourth antenna 34 is divided into low-frequency and medium-high frequency by the fourth combiner 44, and is respectively connected to the second channel of the diversity receiving LNA BANK 25 through the on-chip N28 filter in the FEM 242 and the external high-frequency filter. Low frequency input port LB0 IN1 and high frequency input port.

The working principle of the second example will be described in detail below in conjunction with FIG. 3b , FIG. 3c , FIG. 3d , FIG. 3f , FIG. 4 and FIG. 5 .

The TX (Transmit, transmit) link, the PRX link, and the PRX MIMO link are the same as the first example.

DRX link: (1) The diversity reception signal enters from the third antenna 33, passes through the path Path05, and reaches the third combiner 43; (2) splits the diversity reception low-frequency signal from the third combiner 43, and arrives through the path Path06 The LB ANT port of FEM 24 is connected to the single-port contact 6 of the single-pole five-throw switch SP5T in FEM 242; (3) the switch is switched to contact 4, so that the diversity reception low-frequency signal is sent to the LB AUX2 port of FEM 242 (4) after the third N28 filter 63 filters the diversity reception low-frequency signal, to the LB1 IN2 port of the diversity reception LNA BANK 25, this port is connected to the contact 3 of the single-pole four-throw switch SP4T in the diversity reception LNA BANK 25; ( 5) The switch switches the contact 3 to the single-port contact 1, so that the filtered diversity reception low-frequency signal reaches the LB1 LNA channel in the diversity reception LNA BANK 25; (6) The filtered diversity reception low-frequency signal passes through the LB1 LNA After amplification, the data selector MUX1 is output from the LB1 OUT port of the diversity receiving LNA BANK 25; (7) the amplified signal enters the transceiver 10 through the SDR DRXE port.

DRX MIMO link: (1) The MIMO diversity reception signal enters from the fourth antenna, passes through the path Path07, and reaches the fourth combiner 44; (2) the diversity reception low-frequency MIMO signal split by the fourth combiner 44 passes through the path Path08 Arrive at FEM 242; (3) Diversity receiving low-frequency MIMO signal enters FEM 242 through LB AUX IN port, after filtering by N28 of filter 122, output FEM 242 from LB AUX OUT port; (4) Diversity receiving low-frequency MIMO signal after filtering from The LB0 IN1 port enters the diversity receiving LNA BANK 25 and reaches the contact 3 of the single-pole three-throw switch SP3T#3; (5) the switch is switched to the single-port contact 1, so that the diversity receiving low-frequency MIMO signal reaches the diversity receiving LNA BANK 25 (6) Diversity receiving low-frequency MIMO signal is amplified by LB0 LNA, and output from LB0 OUT port of diversity receiving LNA BANK 25 through data selector MUX2; (7) Entering transceiver 10 through SDR DRX10 port.

Only one filter component is included in the second example, and the filter component is set in the FEM 242, and the on-chip filter 122 is set to perform N28 filtering for diversity reception low-frequency MIMO signals; the input port in the filter component is the LB AUX IN port of the FEM242, The output port is the LB AUX OUT port of FEM 242.

In an exemplary embodiment, the filtering component 12 can be arranged in the FEM, and can include a first filtering component and a second filtering component; the input port of the first filtering component can be the antenna port of the FEM, and the output port can be a predetermined The output port of the frequency band, the on-chip filter is connected between the antenna port of the FEM and the output port of the predetermined frequency band; the input port of the second filtering component is the input port of the FEM, and the output port is the output port of the FEM; the on-chip filter is connected Between the input and output ports of the FEM.

In an implementation manner of this embodiment, the received signal includes a DRX low-frequency signal and a DRX MIMO low-frequency signal; correspondingly, the received signal of a predetermined frequency band includes a DRX signal and a DRX MIMO signal of a predetermined frequency band; the input port 121 includes a low-frequency antenna port of a FEM LB ANT and low frequency input port LB AUX IN; output port 123 includes the output port and low frequency output port LB AUX OUT of the predetermined frequency band of FEM;

In this embodiment, the on-chip filters in the first and second filtering components are the first and second filters respectively, and the first filter is connected between the LB ANT and the output port of the predetermined frequency band, and is set as a pair of DRX low frequency The signal is filtered in a predetermined frequency band; the second filter is connected between LB AUX IN and LB AUX OUT, and is set to filter the DRX MIMO low-frequency signal in a predetermined frequency band.

In this embodiment, the receiving and amplifying component 13 can be arranged in the first LNA BANK, and the first LNA BANK includes a connected first low-frequency input port group LB1 IN and a first low-frequency low-noise amplifier channel, and a connected second low-frequency input port Group LB0 IN and the second low-frequency low-noise amplifier channel; the N28 OUT port of the FEM is connected to the input end of the first low-frequency low-noise amplifier channel through a port in the first low-frequency input port group, and the LB AUX OUT of the FEM is through the second low-frequency input One port in the port group is connected to the input end of the second low-frequency low-noise amplifier path; the first low-frequency low-noise amplifier path and the second low-frequency low-noise amplifier path are respectively set to perform low-noise power After being amplified, it is output to the transceiver 10 .

In this embodiment, in the first/second low-frequency input port group, other ports except for the connection output port 123 can be connected to DRX/DRX MIMO low-frequency signals of other frequency bands or left floating.

In an example of the present embodiment, the FEM that is provided with filtering assembly is shown in Figure 6, and on-chip filter 122 is an N28 filter; contact, and five second contacts; one of the second contacts is connected to the input of the first filter 1221, one is grounded, and one is connected to the low frequency port LB AUX1 of the FEM; the other two contacts can be connected to other frequency band signals The input end of the filter; the output end of the first filter 1221 is directly connected to the N28 OUT port of the FEM. The input end of the second filter 1222 is directly connected to LB AUX IN, and the output end is directly connected to LB AUX OUT. In this example, the FEM may also include a digital logic unit ASM RFFE arranged for logic control.

In this embodiment, the diversity receiving LNA BANK can also include first and second single-pole multi-throw switches; the first/second low-noise amplifier path can include first/second low-frequency low-noise amplifier, first/second data selection device, the first/second low frequency output port;

Wherein, the first and second single-pole multi-throw switches may each include a first contact and a plurality of second contacts, the first contact of the first single-pole multi-throw switch is connected to the input end of the first low-frequency low-noise amplifier, and multiple The second contacts are respectively connected to different ports in the first low-frequency input port group; the output end of the first low-frequency low-noise amplifier is connected to the first low-frequency output port through the first data selector, and connected to the transceiver through the first low-frequency output port. device 10. The first contact of the second single-pole multi-throw switch is connected to the input end of the second low-frequency low-noise amplifier, and a plurality of second contacts are respectively connected to different ports in the second low-frequency input port group; the output of the second low-frequency low-noise amplifier The end is connected to the second low-frequency output port through the second data selector, and connected to the transceiver 10 through the second low-frequency output port.

The following uses the third example to illustrate this embodiment. In the radio frequency system of this example, the transceiver 10 is connected to LB PA Mid 21, MHB PA Mid 22, main set receiving LNA BANK 23, FEM 243, and diversity receiving LNA BANK 25 respectively; this example Among them, the antenna includes a first antenna 31, a second antenna 32, a third antenna 33, and a fourth antenna 34; the radio frequency system also includes a first combiner 41, a second combiner 42, a third combiner 43, The fourth combiner 44 , the N28 duplexer 50 , and the first N28 filter 61 . Among them, the connection relationship of LB PA Mid 21, MHB PA Mid 22, main set receiving LNA BANK 23, and diversity receiving LNA BANK 25 in the radio frequency system can be referred to the first example and Figure 3b, Figure 3c, Figure 3d, and Figure 3f. Show.

The difference from the second example is that there is no external third N28 filter 63, and the FEM 243 directly uses the built-in on-chip N28 filter to perform N28 filtering on the low-frequency receiving signal input from the LB ANT port, and outputs it to the diversity receiving LNA BANK 25; In addition, the FEM 243 in the third example adopts the FEM shown in Fig. 6 instead, comprises the first filter 1221 and the second filter 1222, both of them are N28 filters in the chip, are respectively set for diversity Receive low-frequency signals and diversity receive low-frequency MIMO signals for N28 filtering; the connection relationship of FEM 243 in the radio frequency system is shown in Figure 7.

In the third example, the first antenna 31 is respectively connected to the LB PA Mid 21 and the MHB PA Mid 22 through the first combiner 41; the LB PA Mid 21 is externally connected to the N28 duplexer 50, and the N28 duplexer 50 is connected to the main receiver LNA The first low frequency input port of BANK 23. The signal that the second antenna 32 receives is divided into low-frequency and medium-high frequency two-way by the second combiner 42, connects the second low-frequency input port and the second low-frequency input port of the LNA BANK 23 of the main collection through the first N28 filter 61 and the high-frequency filter respectively High frequency input port. The signal received by the third antenna 33 is divided into low-frequency and medium-high frequency two paths by the third combiner 43, which are respectively connected to the low-frequency antenna port LB ANT of the FEM 243 and the medium-high frequency antenna port MHB ANT, and the LB ANT port of the FEM 243 is connected to the FEM 243 The input end of the first filter, the port N28A OUT of the FEM 243 connected to the output end of the first filter is connected to the first low frequency input port LB1 IN2 of the diversity receiving LNA BANK 25. The signal received by the fourth antenna 34 is divided into low-frequency and medium-high frequency through the fourth combiner 44, and is respectively connected to the second low frequency of the diversity receiving LNA BANK 25 through the second filter in the FEM 243 and the external high-frequency filter. Input port LB0 IN1 and high frequency input port.

In the third example, the TX (Transmit, transmit) link, the PRX link, the DRX link, and the PRX MIMO link are the same as the first example; the DRX MIMO link is the same as the second example.

Include two filtering components in the 3rd example, all are arranged in FEM 243, in the filtering component that the first filter 1221 in FEM 243 belongs to input port is the low-frequency antenna port LB ANT of FEM241, or comprises the low-frequency antenna port LB of FEM241 ANT and single-pole five-throw switch SP5T; the output port is the N28A OUT port of FEM 241. The input port of the filter assembly to which the second filter 1222 belongs is the LB AUX IN port of the FEM242, and the output port is the LB AUX OUT port of the FEM242.

In an exemplary embodiment, filter assembly 12 is arranged in PA Mid, and input port 121 is the input port of PA Mid; Output port 123 is the output port in PA Mid; On-chip filter 122 is connected at input port and output port between.

In an implementation manner of this embodiment, the PA Mid may be an LB PA Mid, the received signal includes a PRX MIMO low-frequency signal, and the received signal of a predetermined frequency band includes a PRX MIMO signal of a predetermined frequency band.

In this embodiment, the input port 121 may include the low-frequency input port LB AUX IN of the LB PA Mid; the output port 123 may include the low-frequency output port LB AUX OUT of the LB PA Mid.

In this embodiment, the receiving and amplifying component 13 can be arranged in the second LNA BANK, and the second LNA BANK is also referred to as the main set receiving LNA BANK in this paper, and the main set receiving here includes PRX and PRX MIMO. The second LNA BANK includes the connected low-frequency input port group LB0 IN and the low-frequency low-noise amplifier channel; the LB AUX OUT of LB PA Mid is connected to the input end of the low-frequency low-noise amplifier channel through a port in the low-frequency input port group; the low-frequency low-noise amplifier The path is set to perform low-noise power amplification on the N28PRX MIMO signal and output it to the transceiver 10.

In this embodiment, in the low-frequency input port group, other ports except for connecting the output port 123 can be connected to PRX MIMO low-frequency signals of other frequency bands or left floating.

In an example of this embodiment, the LB PA Mid with built-in filter components is shown in Figure 8, the on-chip filter 122 is an N28 filter, the input end is directly connected to LB AUX IN, and the output end is directly connected to LB AUX OUT.

In this embodiment, the main receiver LNA BANK can also include a single-pole multi-throw switch; the low-noise amplifier path can include a low-frequency low-noise amplifier, a data selector, and a low-frequency output port;

Wherein, the single-pole multi-throw switch may include a first contact and a plurality of second contacts, the first contact is connected to the input end of the low-frequency low-noise amplifier, and the plurality of second contacts are respectively connected to different ports in the low-frequency input port group connected; the output end of the low-frequency low-noise amplifier is connected to the low-frequency output port through the data selector, and connected to the transceiver 10 through the low-frequency output port.

The fourth example is used to illustrate this embodiment below. In the radio frequency system of this example, the transceiver 10 is respectively connected to LB PA Mid 211, MHB PA Mid 22, main set receiving LNA BANK 23, FEM 24, and diversity receiving LNA BANK 25; this example Among them, the antenna includes a first antenna 31, a second antenna 32, a third antenna 33, and a fourth antenna 34; the radio frequency system also includes a first combiner 41, a second combiner 42, a third combiner 43, The fourth combiner 44 , the N28 duplexer 50 , the second and the third N28 filters 62 , 63 . Among them, the connection relationship of the MHB PA Mid 22, the main set receiving LNA BANK 23, and the diversity receiving LNA BANK 25 in the radio frequency system can be referred to in the first example and shown in Figure 3c, Figure 3d, and Figure 3f.

The difference with the first example is that there is no on-chip N28 filter in the FEM 24 of the fourth example, and there are second and third N28 filters 62 and 63 that are plugged in; in addition, the LB PA Mid 211 of the fourth example is changed to The LB PA Mid shown in Figure 8 is adopted, including the on-chip N28 filter, and the external N28 filter 61 is canceled; the connection relationship of LB PA Mid 211 and FEM 24 in the radio frequency system is shown in Figure 9a and Figure 9b respectively Show.

In the fourth example, the first antenna 31 is respectively connected to the LB PA Mid 21 and the MHB PA Mid 22 through the first combiner 41; the LB PA Mid 21 is externally connected to the N28 duplexer 50, and the N28 duplexer 50 is connected to the main receiving LNA The first low frequency input port LB1 IN2 of BANK 23. The signal received by the second antenna 32 is divided into low-frequency and medium-high frequency through the second combiner 42, respectively through the built-in N28 filter in LB PA Mid 21 and the external high-frequency filter, and connected to the main receiver LNA BANK 23 The second low frequency input port LB0 IN1 and high frequency input port. The third antenna 33 is divided into low-frequency and medium-high frequency two paths by the third combiner 43, respectively connected to the low-frequency antenna port LB ANT of the FEM 24 and the medium-high frequency antenna port MHB ANT, wherein the low-frequency signal is output from the LB AUX2 port of the FEM 24, The first low-frequency input port LB1 IN2 of the diversity receiving LNA BANK 23 through the external N28 filter 63. The fourth antenna 34 is divided into low-frequency and medium-high frequency two paths by the fourth combiner 44, and connects the second low-frequency input port LB0 IN1 and the high-frequency input port LB0 IN1 of the diversity receiving LNA BANK 25 through the second N28 filter 62 and the high-frequency filter respectively. input port.

The working principle of the fourth example will be described in detail below in conjunction with Fig. 3c, Fig. 3d, Fig. 3f and Fig. 9a and Fig. 9b.

The TX (Transmit, transmit) link, the PRX link, and the DRX MIMO link are the same as the first example; the DRX link is the same as the second example.

PRX MIMO link: (1) The receiving signal of the main set of MIMO enters from the second antenna, passes through the path Path03, and reaches the second combiner 42; (2) the low-frequency MIMO signal of the main set received by the second combiner 42 passes through Path04, to LB PA Mid 211; (3) The low-frequency MIMO signal received by the main set enters LB PA Mid 211 from the LB AUX IN port, N28 filtering is performed by the on-chip N28 filter, and LB PA Mid 211 is output from the LB AUX OUT port; (4) The filtered low-frequency MIMO signal of the main receiver enters the main receiver LNA BANK 23 through the LB0 IN1 port, and reaches the contact 3 of the single-pole three-throw switch SP3T#3; (5) The switch is switched to the single-port contact 1 , so that the filtered main set receives the low-frequency MIMO signal to reach the LB0LNA channel in the main set receiving LNA BANK 23; (6) After the filtered main set receives the low-frequency MIMO signal after being amplified by the LB0LNA, it is received from the main set through the data selector MUX2 The LB0 OUT port output of LNA BANK 23; (7) enter transceiver 10 through SDR PRX10 port.

The fourth example includes a filter component, which is set in LB PA Mid 211, and the filter in the filter component is set to perform N28 filtering on the low-frequency MIMO signal received by the main set; the input port in the filter component is LB AUX of LB PA Mid 211 IN port, the output port is LB AUX OUT port of LB PA Mid 211.

In the fourth example, the FEM 24 can be replaced by the FEM in any one of the first example, the second example, and the third example. Correspondingly, when using the FEM in any of the above examples, the DRX link and/or or DRX MIMO link using the link in the corresponding example. In the fifth example, on the basis of the fourth example, the FEM is replaced by the FEM in the third example; in the fifth example, there are multiple filter components, including two filter components arranged in the FEM as shown in Figure 6 , and a filtering component set in LB PA Mid as shown in Figure 8.

The radio frequency system of the fifth example is shown in Figure 10, and the transceiver 10 is respectively connected to LB PA Mid 211, MHB PA Mid 22, main set receiving LNA BANK 23 (LNA BANK#1 in Figure 10), FEM 243, diversity receiving LNA BANK 25 (LNA BANK#2 among Fig. 10); In this example, the antenna includes the first antenna 31, the second antenna 32, the third antenna 33, and the antenna 31; the radio frequency system also includes the first combiner 41, the second antenna The second combiner 42 , the third combiner 43 , the fourth combiner 44 , and the N28 duplexer 50 . Among them, the connection relationship of the MHB PA Mid 22, the main set receiving LNA BANK 23, and the diversity receiving LNA BANK 25 in the radio frequency system can be referred to in the first example and shown in Figure 3c, Figure 3d, and Figure 3f.

The difference from the fourth example is that in the fifth example, there is no second and third N28 filters installed outside, and these two filters are changed to on-chip N28 filters, all of which are built into the FEM 243. LB PA Mid 211 uses the LB PA Mid shown in Figure 8, and FEM 243 uses the FEM shown in Figure 6.

In the fifth example, the first antenna 31 is respectively connected to the LB PA Mid 211 and the MHB PA Mid 22 through the first combiner 41; the LB PA Mid 21 is externally connected to the N28 duplexer 50, and the N28 duplexer 50 is connected to the main set receiving LNA The first low frequency input port LB1IN2 of BANK 23. The signal received by the second antenna 32 is divided into low-frequency and medium-high frequency through the second combiner 42, and is respectively connected to the main set receiving LNA BANK 23 through the N28 filter in the LB PA Mid 211 and the external high-frequency filter. Two low frequency input port LB0 IN1 and high frequency input port. The signal received by the third antenna 33 is divided into low frequency and medium high frequency two paths by the third combiner 43, respectively connected to the low frequency antenna port LB ANT of FEM 243 and the medium and high frequency antenna port MHB ANT; the LB ANT port of FEM 243 is connected to FEM The input end of the first N28 filter in 243, the N28A OUT of the FEM 243 connected to the output end of the first N28 filter is connected to the first low frequency input port LB1 IN2 of the diversity reception LNA BANK 25. The signal received by the fourth antenna 34 is divided into low-frequency and medium-high frequency through the fourth combiner 44, respectively through the second N28 filter in the FEM 243 and the external high-frequency filter, and connected to the first channel of the diversity receiving LNA BANK 25. Two low frequency input port LB0 IN1 and high frequency input port.

The working principle of the fifth example is described in detail below.

The TX (Transmit, transmit) link, the PRX link, and the DRX link are the same as the first example; the DRX MIMO link is the same as the second example; the PRX MIMO link is the same as the fourth example.

The embodiment of the present application also provides a communication device, including the receiving device or the radio frequency system as provided in any one of the above embodiments. The communication device does not increase the area and cost of the main board by building the filter into the filter component, and has good receiving performance. When multiple channels of receiving signals are included, and the built-in on-chip filter includes an N28 filter, the communication device can support N28 MIMO.

The application describes a number of embodiments, but the description is illustrative rather than restrictive, and it will be obvious to those of ordinary skill in the art that within the scope of the embodiments described in the application, There are many more embodiments and implementations. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Except where expressly limited, any feature or element of any embodiment may be used in combination with, or substituted for, any other feature or element of any other embodiment.

This application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The disclosed embodiments, features and elements of this application can also be combined with any conventional features or elements to form unique inventive solutions as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive solutions to form yet another unique inventive solution as defined by the claims. It is therefore to be understood that any of the features shown and/or discussed in this application can be implemented alone or in any suitable combination. Accordingly, the embodiments are not to be limited except in accordance with the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of protection of the appended claims.

Furthermore, in describing representative embodiments, the specification may have presented a method and/or process as a particular sequence of steps. However, to the extent the method or process is not dependent on the specific order of steps described herein, the method or process should not be limited to the specific order of steps described. Other sequences of steps are also possible, as will be appreciated by those of ordinary skill in the art. Therefore, the specific order of the steps set forth in the specification should not be construed as limitations on the claims. In addition, claims for the method and/or process should not be limited to performing their steps in the order written, those skilled in the art can easily understand that these orders can be changed and still remain within the spirit and scope of the embodiments of the present application Inside.

Claims

A receiving device is characterized in that it is applied to a receiving channel, including: a filtering component, a receiving amplification component; the filtering component includes:

an input port configured to receive a receive signal from the antenna;

An on-chip filter configured to filter the received received signal to obtain a received signal in a predetermined frequency band;

an output port configured to send the received signal of the predetermined frequency band to the receiving amplifying component;

The receiving amplifying component is configured to amplify the power of the received signal in the predetermined frequency band and then output it.
The receiving device according to claim 1, wherein the predetermined frequency band includes one or more of the following: N28, B28, N28A.
The receiving device according to claim 1, wherein: the filtering component is set in the radio frequency front-end module FEM or the power amplification module PA Mid.
The receiving device as claimed in claim 1, wherein:

The filtering component is set in the FEM, the input port is the antenna port of the FEM, and the output port is the output port of the predetermined frequency band of the FEM; the on-chip filter is connected to the antenna port and between the output port of the predetermined frequency band.
The receiving device as claimed in claim 1, wherein:

The filtering assembly is set in the FEM; the input port is the input port of the FEM; the output port is the output port of the FEM; the on-chip filter is connected between the input port and the output port between.
The receiving device as claimed in claim 1, wherein:

There are multiple receiving paths, and the filter component is set in the FEM, including a first filter component and a second filter component; the input port in the first filter component is the antenna port of the FEM, and the output port is the predetermined FEM port. The output port of the frequency band, the on-chip filter is connected between the antenna port of the FEM and the output port of the predetermined frequency band;

The input port in the second filtering component is the input port of the FEM, and the output port is the output port of the FEM; the on-chip filter is connected between the input port and the output port of the FEM.
The receiving device according to any one of claims 1, 4-6, wherein:

The filtering assembly is set in the power amplification module PA Mid; the input port is the input port of the PA Mid; the output port is the output port of the PA Mid; the on-chip filter is connected to the PA Mid between the input port and the output port.
The receiving device according to claim 1, wherein there are multiple receiving paths, corresponding to the main set receiving signal and the diversity receiving signal respectively; there are multiple filtering components, corresponding to different receiving paths.
The receiving device according to claim 8, wherein: the receiving paths are multiple, respectively corresponding to the main set receiving signal, the diversity receiving signal, the multi-input multi-output main set receiving signal, and the multi-input multi-output diversity receiving signal; There are multiple filter components, corresponding to different receiving channels.
The receiving device according to claim 8 or 9, wherein there are multiple receiving amplifying components corresponding to different receiving channels.
The receiving device according to claim 1, wherein: the receiving amplifier assembly is arranged in the LNA BANK;

The receiving amplifying component includes: a connected input port group and a low noise amplifier path; the output port of the filtering component is connected to the input end of the low noise amplifier path through a port in the input port group; The amplifying path is set to amplify the received signal in the predetermined frequency band with low noise power and then output it.
The receiving device according to claim 1, wherein the filtering component comprises a plurality of on-chip filters of different frequency bands and a plurality of output ports; the plurality of output ports are respectively connected to chips of the plurality of different frequency bands the output of the inner filter;

The receiving device also includes: a toggle switch; the toggle switch includes at least one first contact and a plurality of second contacts; the first contact is connected to the input port, and the plurality of second contacts The input terminals of the multiple on-chip filters of different frequency bands are respectively connected.
A radio frequency system, comprising: an antenna, a transceiver, and the receiving device according to any one of claims 1-12.
The radio frequency system according to claim 13, wherein when there are multiple receiving channels, there are one or more of the following situations:

There are multiple receiving devices, each corresponding to a different receiving path;

There are multiple filtering components and/or receiving amplifying components in the receiving device, each corresponding to a different receiving path.
A communication device comprising the radio frequency system as claimed in claim 13 or 14.