Radio frequency switch chip and radio frequency front-end module

Abstract

The invention discloses a radio frequency switch chip and a radio frequency front end module, a radio frequency switch module in the radio frequency switch chip comprises a first switch unit and a second switch unit, and a plurality of antenna ports comprise a first part antenna port and a second part antenna port; the first signal line is connected to the first part antenna port through the first switch unit, the second signal line is connected to the second part antenna port through the second switch unit, and antenna ports connected to the same antenna exist in the first part antenna port and the second part antenna port respectively. As the number of the antenna ports used for being connected to the same antenna can be multiple, the multiple antenna ports used for being connected to the same antenna can be arranged at different positions of the bare core respectively. Therefore, when the radio frequency signals of different communication frequency bands need to be transmitted to the outside through the same antenna, the isolation between the transmission paths corresponding to the different radio frequency signals can be ensured, so that the signal quality of the radio frequency signals during transmission is improved.

Description

Technical Field

[0001] The present application relates to the field of radio frequency technology, and more specifically, to a radio frequency switch chip and a radio frequency front-end module. Background Art

[0002] At present, RF front-end modules have been widely used in wireless communications, the Internet of Things, smart homes and other fields. They can process RF signals (for example, power amplification, filtering, etc.) to complete the tasks of receiving and sending RF signals.

[0003] In the existing RF front-end module, the RF switch chip is an important component of the RF front-end module. The RF switch chip is integrated with an RF switch (for example, an antenna switch), which can be used to switch the transmission of RF signals in different communication frequency bands to ensure the normal operation of each chip and component in the RF front-end module.

[0004] However, existing RF switch chips have the problem of poor isolation performance. Summary of the invention

[0005] The embodiments of the present application provide a radio frequency switch chip and a radio frequency front-end module.

[0006] According to the first aspect of the present application, an embodiment of the present application provides a radio frequency switch chip, the radio frequency switch chip includes a bare core and a radio frequency switch module arranged on the bare core, wherein the bare core is provided with a first signal line, a second signal line and a plurality of antenna ports, the first signal line and the second signal line are used to transmit radio frequency signals of different communication frequency bands respectively; wherein at least part of the first signal line extends along the first direction, at least part of the second signal line extends along the second direction, and the angle between the first direction and the second direction is greater than or equal to 60 degrees and less than or equal to 120 degrees. The radio frequency switch module includes a first switch unit and a second switch unit, and the plurality of antenna ports include a first part of antenna ports and a second part of antenna ports; the first signal line is connected to the first part of antenna ports through the first switch unit, and the first switch unit is used to turn on or off the signal branch between the first signal line and the first part of antenna ports; the second signal line is connected to the second part of antenna ports through the second switch unit, and the second switch unit is used to turn on or off the signal branch between the second signal line and the second part of antenna ports; wherein the first part of antenna ports and the second part of antenna ports respectively have antenna ports connected to the same antenna.

[0007] According to the second aspect of the present application, an embodiment of the present application further provides a radio frequency front-end module, which includes a substrate and the above-mentioned radio frequency switch chip, and the radio frequency switch chip is arranged on the substrate.

[0008] The embodiment of the present application provides a radio frequency switch chip and a radio frequency front-end module, wherein the radio frequency switch chip includes a radio frequency switch module arranged on a bare core, and the bare core is provided with a first signal line, a second signal line and a plurality of antenna ports. Among them, at least part of the first signal line extends along the first direction, at least part of the second signal line extends along the second direction, and the angle between the first direction and the second direction is greater than or equal to 60 degrees and less than or equal to 120 degrees. For example, the above angle can be 60 degrees, 80 degrees, 90 degrees, 100 degrees, 120 degrees, and so on.

[0009] Ideally, the angle between the first direction and the second direction is equal to 90 degrees. At this time, at least part of the first signal line and at least part of the second signal line are perpendicular to each other, so that when radio frequency signals of different communication frequency bands are transmitted in the corresponding signal lines, since the parallel distance corresponding to the two signal lines is the shortest in space, the isolation between the corresponding transmission paths of different radio frequency signals can be improved to ensure the transmission quality of the radio frequency signals. Of course, when the angle between the first direction and the second direction is equal to 60 degrees, 80 degrees, 100 degrees, 120 degrees, etc., due to the existence of the angle, the parallel distance corresponding to the two signal lines can also be shortened to ensure the isolation between the corresponding transmission paths of different radio frequency signals.

[0010] Further, the plurality of antenna ports may include a first portion of antenna ports and a second portion of antenna ports, wherein the first portion of antenna ports may be understood as a portion of the plurality of antenna ports, and the second portion of antenna ports may be understood as another portion of the plurality of antenna ports. Specifically, the RF switch module may include a first switch unit and a second switch unit, wherein the first switch unit is connected between the first signal line and the first portion of antenna ports, and the second switch unit is connected between the second signal line and the second portion of antenna ports. The first portion of antenna ports and the second portion of antenna ports each include an antenna port connected to the same antenna.

[0011] In the present application, the number of antenna ports for connecting to the same antenna can be multiple (for example, two), and the multiple antenna ports for connecting to the same antenna can be respectively set at different positions of the bare core, and respectively connected to different signal lines through corresponding switch units. Therefore, when radio frequency signals of different communication frequency bands need to be transmitted to the outside world through the same antenna, the isolation between the corresponding transmission paths of different radio frequency signals can be guaranteed to improve the signal quality of the radio frequency signal during transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 It is a structural diagram of the RF front-end module provided in an embodiment of the present application.

[0014] Figure 2 yes Figure 1 The schematic diagram of the structure of the RF switch chip in the RF front-end module is shown.

[0015] Figure 3 yes Figure 2 The circuit structure diagram corresponding to the RF switch chip shown.

[0016] Figure 4 yes Figure 2 A schematic structural diagram of the first switch unit and the third switch unit in the RF switch chip shown.

[0017] Figure 5 yes Figure 2 A schematic diagram of the structure of the second switch unit in the RF switch chip shown.

[0018] Figure 6 yes Figure 1 Another structural schematic diagram of the RF switch chip in the RF front-end module is shown. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application.

[0020] An embodiment of the present application provides a radio frequency front-end module 200. The radio frequency front-end module 200 is a component that integrates two or more discrete devices such as a radio frequency switch, a low noise amplifier, a filter, a duplexer, and a power amplifier (PA) into an independent module, which can improve the integration and hardware performance of the radio frequency front-end module 200 and make it miniaturized.

[0021] See also Figure 1, the RF front-end module 200 may include a substrate 210 and an RF switch chip 100. The substrate 210 is used to fix and support the RF switch chip 100 and other devices (e.g., power amplifier, filter, duplexer, etc.) included in the RF front-end module 200. Specifically, the substrate 210 may be a copper-clad laminate, and a circuit may be printed on the surface of the substrate 210 by performing hole processing, chemical copper plating, electroplating, etching, etc. on the copper-clad laminate.

[0022] In this embodiment, the substrate 210 may be provided with a plurality of antenna interfaces 201, and the plurality of antenna interfaces 201 are respectively used to connect different antennas ANT. Figure 2 In the illustrated embodiment, the number of antenna interfaces 201 is two. In some other possible embodiments, the number of antenna interfaces 201 may be three, four, five, six, etc. Specifically, the R&D personnel may determine the number of antenna interfaces 201 according to the number of antennas ANT that need to be connected to the RF front-end module 200, and this embodiment does not limit this.

[0023] The RF switch chip 100 is disposed on the substrate 210. For example, the RF switch chip 100 can be disposed on the substrate 210 by a flip chip process or a wire bonding process. The RF switch chip 100 is connected to a plurality of antenna interfaces 201, which is used to conduct the signal branch between the antenna interface 201 and other devices (for example, a duplexer, a power amplifier) ​​included in the RF front-end module 200, so that the RF signals of different frequency bands generated by the RF front-end module 200 can be output to the corresponding antenna ANT through the RF switch chip 100, or the RF signal received by the antenna ANT is input into the RF front-end module 200.

[0024] See also Figure 2 , an embodiment of the present application provides a radio frequency switch chip 100, which may include a bare core 10 and a radio frequency switch module 30 arranged on the bare core 10. The bare core 10 may be provided with a first signal line 410, a second signal line 430 and a plurality of antenna ports 450, and the first signal line 410 and the second signal line 430 are used to transmit radio frequency signals of different communication frequency bands respectively. Exemplarily, the first signal line 410 can be used to transmit radio frequency signals of the N77 frequency band, and the second signal line 430 can be used to transmit radio frequency signals of the N79 frequency band. Of course, the first signal line 410 and the second signal line 430 are used to transmit radio frequency signals of other communication frequency bands (for example, 5G communication frequency bands such as N41 and N78), respectively, which is not specifically limited in this embodiment.

[0025] In this embodiment, at least part of the first signal line 410 extends along the first direction X, and at least part of the second signal line 430 extends along the second direction Y. The angle between the first direction X and the second direction Y is greater than or equal to 60 degrees and less than or equal to 120 degrees. For example, the angle may be 60 degrees, 80 degrees, 90 degrees, 100 degrees, 120 degrees, etc.

[0026] In some other possible embodiments, the angle between the first direction X and the second direction Y may be greater than or equal to 80 degrees and less than or equal to 100 degrees.

[0027] Ideally, the angle between the first direction X and the second direction Y is equal to 90 degrees (that is, the first direction X and the second direction Y are perpendicular to each other). At this time, at least part of the first signal line 410 and at least part of the second signal line 430 are perpendicular to each other, so that when radio frequency signals of different communication frequency bands are transmitted in the corresponding signal lines, since the parallel distance corresponding to the two signal lines is the shortest in space, the isolation between the corresponding transmission paths of different radio frequency signals can be improved to ensure the transmission quality of the radio frequency signal. The "parallel distance corresponding to the two signal lines" here can be understood as the projection distance of the first signal line 410 extending along the first direction X in a direction perpendicular to the second direction Y. Of course, when the angle between the first direction X and the second direction Y is equal to 60 degrees, 80 degrees, 100 degrees, 120 degrees, etc., due to the existence of the angle, the parallel distance corresponding to the two signal lines can also be shortened to ensure the isolation between the corresponding transmission paths of different radio frequency signals.

[0028] In this embodiment, the RF switch module 30 may include a first switch unit 320 and a second switch unit 340, and the plurality of antenna ports 450 may include a first portion of antenna ports 4520 and a second portion of antenna ports 4540. The first portion of antenna ports 4520 may be understood as a portion of the plurality of antenna ports 450, and the second portion of antenna ports 4540 may be understood as another portion of the plurality of antenna ports 450.

[0029] Specifically, the first signal line 410 is connected to the first antenna port 4520 through the first switch unit 320, and the first switch unit 320 is used to turn on or off the signal branch between the first signal line 410 and the first antenna port 4520. The second signal line 430 is connected to the second antenna port 4540 through the second switch unit 340, and the second switch unit 340 is used to turn on or off the signal branch between the second signal line 430 and the second antenna port 4540. Among them, the first antenna port 4520 and the second antenna port 4540 respectively have antenna ports 450 connected to the same antenna.

[0030] In this embodiment, the number of antenna ports 450 for connecting to the same antenna can be multiple (for example, two), and the multiple antenna ports 450 for connecting to the same antenna can be respectively arranged at different positions of the bare core 10, and respectively connected to different signal lines through corresponding switch units. Therefore, when radio frequency signals of different communication frequency bands need to be transmitted to the outside world through the same antenna, the isolation between the corresponding transmission paths of different radio frequency signals can be guaranteed to improve the signal quality of the radio frequency signal during transmission.

[0031] The specific implementation of the RF switch chip 100 is described in detail below.

[0032] In this embodiment, the bare core 10 refers to an electronic chip that directly exposes the chip device without packaging, finished modules and connectors, and is used to fix and support the RF switch module 30 and other devices included in the RF switch chip 100. Specifically, the bare core 10 can be made of materials such as silicon, gallium arsenide, silicon carbide, etc., to ensure that the bare core 10 has good thermal stability, mechanical strength and dimensional stability.

[0033] exist Figure 2 In the illustrated embodiment, the bare core 10 may be substantially rectangular. The bare core 10 may have a first side 101 and a second side 102 opposite to each other, the first side 101 and the second side 102 may be two parallel sides on the bare core 10 and extend along a first direction X. The bare core 10 may also have a third side 103 and a fourth side 104 opposite to each other, the third side 103 and the fourth side 104 may be two parallel sides on the bare core 10 and extend along a second direction Y. Specifically, the first side 101, the third side 103, the second side 102 and the fourth side 104 are sequentially connected to define the outer contour of the bare core 10.

[0034] In this embodiment, the bare core 10 may be provided with a first signal line 410 and a second signal line 430, and the first signal line 410 and the second signal line 430 may be metal routing lines. At least part of the second signal line 430 extends along the second direction Y to separate the layout area of ​​the bare core 10 to form a first layout area 106 and a second layout area 107. The first layout area 106 and the second layout area 107 are located on opposite sides of the second signal line 430, respectively. Figure 2 , the first layout area 106 refers to the right area of ​​the second signal line 430 , and the second layout area 107 refers to the left area of ​​the second signal line 430 .

[0035] It should be noted here that "the signal line extends along a certain direction (for example: the first direction X or the second direction Y)" means that the overall direction of the signal line is a certain direction. In some possible examples, the signal line can be a straight line, and the extension direction of the straight line is a certain direction; in other possible examples, the signal line can include multiple consecutive connection segments, and the overall extension direction of the multiple connection segments is a certain direction. For example: when multiple consecutive connection segments are not on the same straight line, the virtual straight line connecting the head and the end of the multiple consecutive connection segments can be used as the overall extension direction of the signal line.

[0036] In this embodiment, the first signal line 410 is located in the second layout area 107, and the first signal line 410 and the second signal line 430 are spaced apart in the first direction X. That is, there is a gap between the first signal line 410 and the second signal line 430, so that the first signal line 410 and the second signal line 430 do not intersect in the bare core 10. Therefore, the transmission paths of the two RF signals corresponding to the first signal line 410 and the second signal line 430 are separated in physical space, thereby ensuring the isolation between the transmission paths.

[0037] In this embodiment, at least part of the first signal line 410 extends along the first direction X to separate the second layout area 107 to form a target area 1072 and a sub-area 1074. The target area 1072 and the sub-area 1074 are located on opposite sides of the first signal line 410. Figure 2 , the target region 1072 refers to the region above the first signal line 410 , and the sub-region 1074 refers to the region below the first signal line 410 .

[0038] In some possible embodiments, the first signal line 410 is substantially "L"-shaped, and may include a first connecting section 4120 and a second connecting section 4140. The first connecting section 4120 extends along the first direction X, one end of the first connecting section 4120 is spaced apart from the second signal line 430 in the first direction X, and the other end of the first connecting section 4120 is connected to the second connecting section 4140. The second connecting section 4140 extends along the second direction Y and is located on a side of the first connecting section 4120 away from the first switch unit 320. The second connecting section 4140, the first connecting section 4120 and at least part of the second signal line 430 jointly define the target area 1072. Specifically, the second connecting section 4140 and at least part of the second signal line 430 are spaced apart in the first direction X to ensure isolation between transmission paths.

[0039] In some possible embodiments, the bare core 10 may also be provided with a first transmitting port 1020 and a second transmitting port 1040, and the first transmitting port 1020 and the second transmitting port 1040 are both external ports of the bare core 10. The first transmitting port 1020 is connected to the first signal line 410, and the second transmitting port 1040 is connected to the second signal line 430. Specifically, the first transmitting port 1020 may be connected to the output end of the first power amplifier, which is used to transmit the first RF signal output by the first power amplifier to the first signal line 410. The second transmitting port 1040 may be connected to the output end of the second power amplifier, which is used to transmit the second RF signal output by the second power amplifier to the second signal line 430. Exemplarily, the first power amplifier and the second power amplifier may be integrated in the same power amplifier chip located on the substrate 210, or the first power amplifier and the second power amplifier may be respectively integrated in two different power amplifier chips located on the substrate 210.

[0040] See also Figure 3 , Figure 3 is a circuit diagram corresponding to the RF switch chip 100 provided in an embodiment of the present application, wherein the first transmitting port 1020 may be Figure 3 The N77_TX port in the second transmission port 1040 can be Figure 3 N79_TX port in the .

[0041] In this embodiment, the bare core 10 may be provided with a plurality of antenna ports 450, which are all external ports of the bare core 10 and are respectively used to connect to a plurality of antenna interfaces 201 provided on the substrate 210. Specifically, the plurality of antenna ports 450 may correspond to Figure 3 ANT0 port, ANT1 port, ANT2 port, ANT3 port and AUX_OUT port.

[0042] In this embodiment, the plurality of antenna ports 450 may include a first portion of antenna ports 4520 and a second portion of antenna ports 4540, wherein the first portion of antenna ports 4520 and the second portion of antenna ports 4540 respectively have antenna ports 450 connected to the same antenna. Specifically, the RF switch chip 100 is disposed on the substrate 210 using a flip chip process. The antenna ports 450 for connecting to the same antenna in the first portion of antenna ports 4520 and the second portion of antenna ports 4540 are connected via metal traces (not shown in the figure) disposed on the substrate 210, and the metal traces are used to connect to the antenna interface 201 disposed on the substrate 210.

[0043] Exemplarily, the first part of antenna ports 4520 and the second part of antenna ports 4540 may have corresponding Figure 3 The two antenna ports 450 may be connected to each other through a metal trace on the substrate 210 and then connected to the antenna interface 201 for connecting the antenna ANT3 through the metal trace.

[0044] That is to say, the same antenna port (for example, ANT3 port) in the circuit diagram may have multiple corresponding antenna ports 450 in the actual chip layout, so that the multiple corresponding antenna ports 450 can be respectively set at different positions of the bare core 10 to improve the isolation between the transmission paths. For example, when the RF signal of the N77 frequency band and the RF signal of the N79 frequency band need to be transmitted through the ANT3 port, two antenna ports 450 corresponding to the ANT3 port can be set, and the two antenna ports 450 can be set at different positions of the bare core 10, and connected to the first signal line 410 and the second signal line 430 one by one, so as to improve the isolation between the transmission path corresponding to the N77 frequency band and the transmission path corresponding to the N70 frequency band.

[0045] Please refer again Figure 2 , the first antenna port 4520, the first switch unit 320 and the first signal line 410 are all located on the same side of the second signal line 430, that is, they are all located in the second layout area 107. The second antenna port 4540 and the second switch unit 340 are both located on the other side of the second signal line 430, that is, they are both located in the first layout area 106. Therefore, the transmission path between the first signal line 410 and the first antenna port 4520 and the transmission path between the second signal line 430 and the second antenna port 4540 can be separated in physical space to ensure the isolation between the transmission paths. Specifically, the implementation of the first antenna port 4520, the first switch unit 320, the second antenna port 4540 and the second switch unit 340 is described in detail below in the specification.

[0046] In some possible embodiments, the bare core 10 may also be provided with a third signal line 470, which may be a metal trace. The first signal line 410, the second signal line 430, and the third signal line 470 are used to transmit radio frequency signals of different communication frequency bands, respectively. For example, when the first signal line 410 transmits radio frequency signals of the N77 frequency band and the second signal line 430 transmits radio frequency signals of the N79 frequency band, the third signal line 470 may be used to transmit radio frequency signals of communication frequency bands such as N41 and N78.

[0047] Specifically, the third signal line 470 is located in the sub-region 1074 and extends along the first direction X. The third signal line 470 and the first signal line 410 are both located on the same side of the second signal line 430, that is, both are located in the second layout region 107. The third signal line 470 and the first signal line 410 are spaced apart in the second direction Y to ensure isolation between the transmission paths.

[0048] In some possible embodiments, the bare core 10 may also be provided with a third transmitting port 1060, which is an external port of the bare core 10, and the third transmitting port 1060 is connected to the third signal line 470. Specifically, the third transmitting port 1060 may be connected to the output end of the third power amplifier, which is used to transmit the third RF signal output by the third power amplifier to the third signal line 470. Exemplarily, the third power amplifier may be integrated in a power amplifier chip, which may be a chip external to the RF front-end module 200 (i.e., a peripheral device). As an implementation method, the third transmitting port 1060 may be Figure 3 The AUX_IN port in.

[0049] exist Figure 2 In the illustrated embodiment, the RF switch module 30 may further include a third switch unit 360, through which the third signal line 470 is connected to at least a portion of the first antenna port 4520, and the third switch unit 360 is used to turn on or off the signal branch between the third signal line 470 and the first antenna port 4520.

[0050] Specifically, the third signal line 470 is spaced from the second signal line 430 in the first direction X. That is, there is a gap between the third signal line 470 and the second signal line 430, so that the third signal line 470 and the second signal line 430 do not intersect in the bare core 10. Therefore, the transmission paths of the two RF signals corresponding to the third signal line 470 and the second signal line 430 are separated in physical space, thereby ensuring the isolation between the transmission paths.

[0051] In addition, since the third signal line 470 extends along the first direction X and the second signal line 430 extends along the second direction Y, the parallel distance corresponding to the two signal lines can be shortened due to the angle between the first direction X and the second direction Y, so as to improve the isolation between the transmission paths corresponding to different RF signals. Here, the "parallel distance corresponding to the two signal lines" can be understood as the projection distance of the third signal line 470 extending along the first direction X in a direction perpendicular to the second direction Y.

[0052] Specifically, the first antenna port 4520, the first switch unit 320, the first signal line 410, the third switch unit 360 and the third signal line 470 are all located on the same side of the second signal line 430, that is, they are all located in the second layout area 107. The second antenna port 4540 and the second switch unit 340 are both located on the other side of the second signal line 430, that is, they are both located in the first layout area 106.

[0053] Therefore, the transmission path between the third signal line 470 and at least part of the first antenna port 4520 and the transmission path between the second signal line 430 and the second antenna port 4540 can be separated in physical space to ensure isolation between the transmission paths. In addition, by setting the third switch unit 360 corresponding to the third signal line 470 on the side where the third signal line 470 is located, and setting the first switch unit 320 corresponding to the first signal line 410 on the side where the first signal line 410 is located, the transmission path length of the RF signals of different communication frequency bands can also be shortened, so that the layout of the bare core 10 can be more compact.

[0054] In addition, it is not difficult to find that the first signal line 410 and the third signal line 470 respectively "reuse" at least part of the first part of the antenna port 4520, which can reduce the number of antenna ports 450 set, so that the overall layout of the bare core 10 can be more compact.

[0055] The specific implementation of the first part antenna port 4520, the first switch unit 320 and the third switch unit 360 is described below.

[0056] See also Figure 4 The first antenna port 4520 may include a plurality of antenna ports 450 respectively used to connect different antennas. The plurality of antenna ports 450 included in the first antenna port 4520 are sequentially arranged in intervals in the first direction X and are located between the first signal line 410 and the third signal line 470 to shorten the transmission path between the first antenna port 4520 and the first signal line 410 and the transmission path between the first antenna port 4520 and the third signal line 470, so that the layout of the bare core 10 can be more compact.

[0057] exist Figure 4 In the illustrated embodiment, the first portion of antenna ports 4520 may include a first antenna port 4521 and a second antenna port 4523. As an implementation method, the first antenna port 4521 may be Figure 3 The ANT0 port in the second antenna port 4523 can be Figure 3 It is not difficult to understand that in Figure 3In the figure, each "dashed line" in the RF switch module 30 represents a signal branch, and a corresponding switch needs to be set on each signal branch to turn on or off the corresponding signal branch.

[0058] Specifically, the first antenna port 4521 and the second antenna port 4523 are symmetrically arranged about the first axis L1, and the first axis L1 extends along the second direction Y. The first switch unit 320 may include a first switch S1 and a second switch S2, the first switch S1 is connected between the first antenna port 4521 and the first signal line 410, the second switch S2 is connected between the second antenna port 4523 and the first signal line 410, and the first switch S1 and the second switch S2 are symmetrically arranged about the first axis L1, so that the layout of the bare core 10 can be more compact.

[0059] As an implementation method, the first switch S1 and the second switch S2 may be metal-oxide-semiconductor field-effect transistors (MOSFETs) or bipolar junction transistors (BJTs). The first switch S1 and the second switch S2 may have the same size to ensure layout symmetry.

[0060] exist Figure 4 In the illustrated embodiment, the third switch unit 360 may include a third switch S3 and a fourth switch S4, the third switch S3 is connected between the first antenna port 4521 and the third signal line 470, the fourth switch S4 is connected between the second antenna port 4523 and the third signal line 470, and the third switch S3 and the fourth switch S4 are symmetrically arranged about the first axis L1, so that the layout of the bare core 10 can be more compact. As an implementation method, the third switch S3 and the fourth switch S4 can be MOSFET tubes or BJT tubes. The sizes of the third switch S3 and the fourth switch S4 can be the same to ensure the symmetry of the layout.

[0061] exist Figure 4 In the illustrated embodiment, the first portion of antenna ports 4520 may further include a third antenna port 4525, and the third antenna port 4525 is located on the first axis L1. As an implementation, the third antenna port 4525 may be Figure 3 The first switch unit 320 may further include a fifth switch S5, the fifth switch S5 being connected between the third antenna port 4525 and the first signal line 410, and the fifth switch S5 being located on the first axis L1. As an implementation, the fifth switch S5 may be a MOSFET tube or a BJT tube.

[0062] The bare core 10 may also be provided with a first ground trace 1210, which extends along the first direction X and is located between the third antenna port 4525 and the third signal line 470. Specifically, the first ground trace 1210 may be connected to the ground port to be grounded through the ground port. It is not difficult to find that the first ground trace 1210 is spaced between the first signal line 410 and the third signal line 470, which can play a role in signal isolation in space, so as to improve the isolation of the signals transmitted by the first signal line 410 and the third signal line 470.

[0063] exist Figure 4 In the illustrated embodiment, the RF switch module 30 may further include a first grounding switch D1, a second grounding switch D2, a third grounding switch D3 and a fourth grounding switch D4, the first grounding switch D1 being connected between the first antenna port 4521 and the first grounding trace 1210, the second grounding switch D2 being connected between the second antenna port 4523 and the first grounding trace 1210, and the first grounding switch D1 and the second grounding switch D2 being symmetrically arranged about the first axis L1 so that the layout of the bare core 10 can be more compact.

[0064] As an implementation mode, the first grounding switch D1 and the second grounding switch D2 may be MOSFET tubes or BJT tubes. The sizes of the first grounding switch D1 and the second grounding switch D2 may be the same to ensure the symmetry of the layout. The "first grounding switch D1 and the second grounding switch D2" here serve as parallel grounding switches corresponding to the first antenna port 4521 and the second antenna port 4523, respectively, which can further improve the signal isolation.

[0065] The third grounding switch D3 is connected between the third antenna port 4525 and the first grounding line 1210, and the fourth grounding switch D4 is connected between the third signal line 470 and the first grounding line 1210. The third grounding switch D3 and the fourth grounding switch D4 are respectively located on the first axis L1. As an implementation method, the third grounding switch D3 and the fourth grounding switch D4 can be a MOSFET tube or a BJT tube. Here, the "third grounding switch D3 and the fourth grounding switch D4" are respectively used as parallel grounding switches corresponding to the third antenna port 4525 and the third signal line 470, which can further improve signal isolation.

[0066] exist Figure 4 In the illustrated embodiment, the first portion of antenna ports 4520 may further include a fourth antenna port 4527 and a fifth antenna port 4529. As an implementation method, the fourth antenna port 4527 may be Figure 3 The ANT1 port in the fifth antenna port 4529 can be Figure 3 ANT3 port in the .

[0067] Specifically, the fourth antenna port 4527 and the fifth antenna port 4529 are symmetrically arranged about the second axis L2, and the second axis L2 extends along the second direction Y and does not coincide with the first axis L1. The first switch unit 320 may include a sixth switch S6 and a seventh switch S7, the sixth switch S6 is connected between the fourth antenna port 4527 and the first signal line 410, and the seventh switch S7 is connected between the fifth antenna port 4529 and the first signal line 410. The sixth switch S6 and the seventh switch S7 are symmetrically arranged about the second axis L2, so that the layout of the bare core 10 can be more compact. As an embodiment, the sixth switch S6 and the seventh switch S7 can be MOSFET tubes or BJT tubes. The sizes of the sixth switch S6 and the seventh switch S7 can be the same to ensure the symmetry of the layout.

[0068] exist Figure 4 In the illustrated embodiment, the third switch unit 360 may further include an eighth switch S8 and a ninth switch S9, the eighth switch S8 being connected between the fourth antenna port 4527 and the third signal line 470, the ninth switch S9 being connected between the fifth antenna port 4529 and the third signal line 470, and the eighth switch S8 and the ninth switch S9 being symmetrically arranged about the second axis L2, so that the layout of the bare core 10 can be more compact. As an implementation mode, the eighth switch S8 and the ninth switch S9 may be MOSFET tubes or BJT tubes. The eighth switch S8 and the ninth switch S9 may have the same size to ensure the symmetry of the layout.

[0069] The bare core 10 may also be provided with a second grounding trace 1230, which extends along the first direction X and is located on the second axis L2. Specifically, the second grounding trace 1230 may be connected to a grounding port to be grounded through the grounding port. It is not difficult to find that the second grounding trace 1230 is spaced between the first signal line 410 and the third signal line 470, which may play a role in signal isolation in space, so as to improve the isolation of the signals transmitted by the first signal line 410 and the third signal line 470.

[0070] exist Figure 4 In the illustrated embodiment, the RF switch module 30 may further include a fifth grounding switch D5 and a sixth grounding switch D6, the fifth grounding switch D5 being connected between the fourth antenna port 4527 and the second grounding trace 1230, the sixth grounding switch D6 being connected between the fifth antenna port 4529 and the second grounding trace 1230, and the fifth grounding switch D5 and the sixth grounding switch D6 being symmetrically arranged about the second axis L2 so that the layout of the bare core 10 can be more compact.

[0071] As an implementation mode, the fifth grounding switch D5 and the sixth grounding switch D6 may be MOSFET tubes or BJT tubes. The sizes of the fifth grounding switch D5 and the sixth grounding switch D6 may be the same to ensure the symmetry of the layout. Here, the "fifth grounding switch D5 and the sixth grounding switch D6" are respectively used as parallel grounding switches corresponding to the fourth antenna port 4527 and the fifth antenna port 4529, which can further improve the signal isolation.

[0072] It is not difficult to find here that Figure 4 In the illustrated embodiment, the first portion of antenna ports 4520 includes five antenna ports 450, which are respectively connected to Figure 3 The ANT0 port, ANT1 port, ANT2 port, ANT3 port and AUX_OUT port in the embodiment correspond one to one. The first switch unit 320 may include five switches, that is, a first switch S1, a second switch S2, a fifth switch S5, a sixth switch S6 and a seventh switch S7. Therefore, the first switch unit 320 in this embodiment adopts a 1P5T switch architecture. The third switch unit 360 may include four switches, that is, a third switch S3, a fourth switch S4, an eighth switch S8 and a ninth switch S9. Therefore, the third switch unit 360 in this embodiment adopts a 1P4T switch architecture.

[0073] Specifically, since the first signal line 410 and the third signal line 470 both transmit signals to the ANT0 port, the ANT1 port, the ANT2 port and the ANT3 port, the first switch S1, the second switch S2, the third switch S3, the fourth switch S4, the sixth switch S6, the seventh switch S7, the eighth switch S8 and the ninth switch S9 in the first switch unit 320 and the third switch unit 360 can form a DP4T switch architecture, thereby maximizing the overlap of the antenna ports 450, thereby reducing the number of antenna ports 450 set, and making the overall layout of the bare core 10 more compact.

[0074] The specific implementation of the second part antenna port 4540 and the second switch unit 340 is described below.

[0075] See also Figure 5 The second part of antenna ports 4540 may include multiple antenna ports 450 respectively used to connect different antennas. At least part of the multiple antenna ports 450 included in the second part of antenna ports 4540 are arranged in sequence in the second direction Y.

[0076] exist Figure 5 In the illustrated embodiment, the second portion of antenna ports 4540 may include a sixth antenna port 4541 and a seventh antenna port 4543. As an implementation method, the sixth antenna port 4541 may be Figure 3The ANT1 port in the seventh antenna port 4543 can be Figure 3 That is, the sixth antenna port 4541 and the fourth antenna port 4527 both correspond to the ANT1 port, and the seventh antenna port 4543 and the fifth antenna port 4529 both correspond to the ANT3 port.

[0077] Specifically, the sixth antenna port 4541 and the seventh antenna port 4543 are symmetrically arranged about the third axis L3, and the third axis L3 extends along the first direction X. The second switch unit 340 may include a tenth switch S10 and an eleventh switch S11, the tenth switch S10 is connected between the sixth antenna port 4541 and the second signal line 430, the eleventh switch S11 is connected between the seventh antenna port 4543 and the second signal line 430, and the tenth switch S10 and the eleventh switch S11 are symmetrically arranged about the third axis L3, so that the layout of the bare core 10 can be more compact. As an embodiment, the tenth switch S10 and the eleventh switch S11 can be MOSFET tubes or BJT tubes. The tenth switch S10 and the eleventh switch S11 can have the same size to ensure the symmetry of the layout.

[0078] The bare core 10 may also be provided with a first ground port 1250, and the first ground port 1250 is located on the third axis L3. Specifically, the first ground port 1250 is spaced between the sixth antenna port 4541 and the seventh antenna port 4543, which can play a role of signal isolation in space to improve the isolation of the signals transmitted by the sixth antenna port 4541 and the seventh antenna port 4543.

[0079] exist Figure 5 In the illustrated embodiment, the RF switch module 30 may further include a seventh grounding switch D7 and an eighth grounding switch D8, the seventh grounding switch D7 being connected between the sixth antenna port 4541 and the first grounding port 1250, the eighth grounding switch D8 being connected between the seventh antenna port 4543 and the first grounding port 1250, and the seventh grounding switch D7 and the eighth grounding switch D8 being symmetrically arranged about the third axis L3 so that the layout of the bare core 10 can be more compact.

[0080] As an implementation mode, the seventh grounding switch D7 and the eighth grounding switch D8 may be MOSFET tubes or BJT tubes. The seventh grounding switch D7 and the eighth grounding switch D8 may have the same size to ensure the symmetry of the layout. Here, the "seventh grounding switch D7 and the eighth grounding switch D8" are respectively used as parallel grounding switches corresponding to the sixth antenna port 4541 and the seventh antenna port 4543, which can further improve the signal isolation.

[0081] exist Figure 5In the illustrated embodiment, the bare core 10 may also be provided with a main set receiving port group 140 and a diversity receiving port group 160. The sixth antenna port 4541 and the main set receiving port group 140 are both located on the same side of the third axis L3, and the seventh antenna port 4543 and the diversity receiving port group 160 are both located on the other side of the third axis L3. Specifically, the RF switch module 30 may also include a fourth switch unit 370 and a fifth switch unit 380, the fourth switch unit 370 is connected between the sixth antenna port 4541 and the main set receiving port group 140, and is used to turn on or off the signal branch between the sixth antenna port 4541 and the main set receiving port group 140. The fifth switch unit 380 is connected between the seventh antenna port 4543 and the diversity receiving port group 160, and is used to turn on or off the signal branch between the seventh antenna port 4543 and the diversity receiving port group 160.

[0082] Specifically, the fourth switch unit 370 and the fifth switch unit 380 are symmetrically arranged about the third axis L3, so that the layout of the bare core 10 can be more compact. The second switch unit 340, the fourth switch unit 370 and the fifth switch unit 380 are all located on the same side of the second signal line 430. As an embodiment, the main set receiving port group 140 may include a first main set receiving port 1410 and a second main set receiving port 1430, and the diversity receiving port group 160 may include a first diversity receiving port 1610 and a second diversity receiving port 1630, and the first main set receiving port 1410, the second main set receiving port 1430, the first diversity receiving port 1610 and the second diversity receiving port 1630 are sequentially arranged in the second direction Y.

[0083] The first main set receiving port 1410, the second main set receiving port 1430, the first diversity receiving port 1610 and the second diversity receiving port 1630 are all external ports of the bare core 10. Specifically, the first main set receiving port 1410, the second main set receiving port 1430, the first diversity receiving port 1610 and the second diversity receiving port 1630 can be connected to the input end of the low noise amplifier respectively. Exemplarily, the low noise amplifier can be integrated in a low noise amplifier chip located on the substrate 210. As an embodiment, the first main set receiving port 1410 can be Figure 3 The N77_PRX port in the second main set receiving port 1430 can be Figure 3 The N79_PRX port in the first diversity receiving port 1610 may be Figure 3 The N77_DRX port in the second diversity receiving port 1630 may be Figure 3 N79_DRX port in.

[0084] exist Figure 5In the illustrated embodiment, the fourth switch unit 370 may include a twelfth switch S12 and a thirteenth switch S13, the twelfth switch S12 is connected between the sixth antenna port 4541 and the first main set receiving port 1410, and the thirteenth switch S13 is connected between the sixth antenna port 4541 and the second main set receiving port 1430. The fifth switch unit 380 may include a fourteenth switch S14 and a fifteenth switch S15, the fourteenth switch S14 is connected between the seventh antenna port 4543 and the first diversity receiving port 1610, and the fifteenth switch S15 is connected between the seventh antenna port 4543 and the second diversity receiving port 1630. As an implementation method, the twelfth switch S12, the thirteenth switch S13, the fourteenth switch S14, and the fifteenth switch S15 may be MOSFET transistors or BJT transistors.

[0085] exist Figure 5 In the illustrated embodiment, the second portion of antenna ports 4540 may further include an eighth antenna port 4545, and the eighth antenna port 4545 is located on the third axis L3. As an implementation, the eighth antenna port 4545 may be Figure 3 The ANT2 port in the eighth antenna port 4545, that is, the eighth antenna port 4545 and the second antenna port 4523 both correspond to the ANT2 port. The RF switch module 30 may also include a sixteenth switch S16, the sixteenth switch S16 is connected between the eighth antenna port 4545 and the first diversity receiving port 1610, and the sixteenth switch S16 is located on the third axis L3. As an implementation method, the sixteenth switch S16 may be a MOSFET tube or a BJT tube.

[0086] Specifically, the sixth antenna port 4541, the eighth antenna port 4545, and the seventh antenna port 4543 are sequentially spaced apart in the second direction Y. The twelfth switch S12, the thirteenth switch S13, the sixteenth switch S16, the fourteenth switch S14, and the fifteenth switch S15 are sequentially spaced apart in the second direction Y, so that the layout of the bare core 10 can be more compact.

[0087] The bare core 10 may also be provided with a third grounding trace 1270, which extends along the second direction Y and is located on a side of the main set receiving port 140 away from the fourth switch unit 370. Specifically, the third grounding trace 1270 may be connected to the grounding port to be grounded through the grounding port.

[0088] exist Figure 5In the illustrated embodiment, the RF switch module 30 may further include a ninth grounding switch D9, a tenth grounding switch D10, an eleventh grounding switch D11, and a twelfth grounding switch D12, wherein the ninth grounding switch D9 is connected between the first main set receiving port 1410 and the third grounding trace 1270, the tenth grounding switch D10 is connected between the second main set receiving port 1430 and the third grounding trace 1270, the eleventh grounding switch D11 is connected between the first diversity receiving port 1610 and the third grounding trace 1270, and the twelfth grounding switch D12 is connected between the second diversity receiving port 1630 and the third grounding trace 1270.

[0089] As an implementation mode, the ninth grounding switch D9, the tenth grounding switch D10, the eleventh grounding switch D11 and the twelfth grounding switch D12 may be MOSFET tubes or BJT tubes. Here, the "ninth grounding switch D9, the tenth grounding switch D10, the eleventh grounding switch D11 and the twelfth grounding switch D12" are respectively used as parallel grounding switches corresponding to the first main set receiving port 1410, the second main set receiving port 1430, the first diversity receiving port 1610 and the second diversity receiving port 1630, which can further improve signal isolation.

[0090] exist Figure 5 In the illustrated embodiment, the second portion of antenna ports 4540 may further include a ninth antenna port 4547. As an implementation manner, the ninth antenna port 4547 may be Figure 3 ANT0 port in, that is, the ninth antenna port 4547 and the first antenna port 4521 both correspond to the ANT0 port. The RF switch module 30 may also include a seventeenth switch S17, and the seventeenth switch S17 is connected between the ninth antenna port 4547 and the first main set receiving port 1410. As an embodiment, the seventeenth switch S17 can be a MOSFET tube or a BJT tube. Specifically, the ninth antenna port 4547, the first main set receiving port 1410 and the second main set receiving port 1430 are arranged in sequence in the second direction Y, so that the layout of the bare core 10 can be more compact.

[0091] exist Figure 5 In the illustrated embodiment, the second portion of antenna ports 4540 may further include a tenth antenna port 4549. As an implementation method, the tenth antenna port 4549 may be Figure 3The AUX_OUT port in, that is, the tenth antenna port 4549 and the third antenna port 4525 both correspond to the AUX_OUT port. The second switch unit 340 may also include an eighteenth switch S18, and the eighteenth switch S18 is connected between the tenth antenna port 4549 and the second signal line 430. As an implementation method, the eighteenth switch S18 can be a MOSFET tube or a BJT tube. The tenth antenna port 4549 and the ninth antenna port 4547 are spaced apart in the first direction X, and the tenth antenna port 4549 is located on the side of the ninth antenna port 4547 close to the second signal line 430, so that the layout of the bare core 10 can be more compact.

[0092] It is not difficult to find here that Figure 5 In the illustrated embodiment, the second portion of antenna ports 4540 includes five antenna ports 450, which are respectively connected to Figure 3 The ANT0 port, ANT1 port, ANT2 port, ANT3 port and AUX_OUT port in the embodiment correspond one to one. The second switch unit 340 may include three switches, namely, the tenth switch S10, the eleventh switch S11 and the eighteenth switch S18. Therefore, the second switch unit 340 in this embodiment adopts a 1P3T switch architecture.

[0093] In addition, this embodiment also arranges the receiving ports (i.e., the main set receiving port group 140 and the diversity receiving port group 160) and the switches connected to the receiving ports (i.e., the fourth switch unit 370 and the fifth switch unit 380) on the side where the second part antenna port 4540 is located, so that the main set receiving port group 140 and the diversity receiving port group 160 can "multiplex" at least part of the second part antenna port 4540 with the second signal line 430, respectively, and the number of antenna ports 450 set can be reduced, so that the overall layout of the bare core 10 can be more compact.

[0094] See also Figure 2 and Figure 6 In some possible embodiments, the bare core 10 may also be provided with a second ground port 1290, and the second ground port 1290 is located in the target area 1072. The RF switch module 30 may also include a thirteenth ground switch D13 and a fourteenth ground switch D14, the thirteenth ground switch D13 is connected between the second signal line 430 and the second ground port 1290, and the fourteenth ground switch D14 is connected between the first connection section 4120 and the second ground port 1290. As an implementation method, the thirteenth ground switch D13 and the fourteenth ground switch D14 may be a MOSFET tube or a BJT tube. Here, the "thirteenth ground switch D13 and the fourteenth ground switch D14" are respectively used as parallel ground switches corresponding to the second signal line 430 and the first signal line 410, which can further improve the signal isolation.

[0095] In this embodiment, the first signal line 410 is used to transmit the first RF signal, and the second signal line 430 is used to transmit the second RF signal. The RF switch chip 100 may also include a first coupling module 60 and a second coupling module 70 arranged on the bare core 10, and the first coupling module 60 and the second coupling module 70 are located in the target area 1072. Among them, the first coupling module 60 is coupled and connected with the second connecting section 4140, and the first coupling module 60 is used to output a first detection signal, and the first detection signal is used to reflect the signal power of the first RF signal. Specifically, the first detection signal can be a voltage signal or a current signal. The second coupling module 70 is coupled and connected with the second signal line 430; the second coupling module 70 is used to output a second detection signal, and the second detection signal is used to reflect the signal power of the second RF signal. Specifically, the second detection signal can be a voltage signal or a current signal. This embodiment does not limit the specific implementation method of the first coupling module 60 and the second coupling module 70.

[0096] Since different coupling modules can detect the signal power of the RF signal, the RF front-end module 200 subsequently configured with the RF switch chip 100 can dynamically adjust the RF signal with excessive power to ensure the normal transmission of the RF signal. In addition, the RF switch module 30, the first coupling module 60 and the second coupling module 70 are all arranged on the bare core 10, so that the overall hardware layout of the entire RF switch chip 100 is more compact and reasonable, so as to realize the miniaturized design of the RF switch chip 100.

[0097] Furthermore, in this embodiment, the first coupling module 60 and the second coupling module 70 are arranged in the target area 1072 defined by the first signal line 410 and the second signal line 430, so that the first coupling module 60 is arranged "close to" the first signal line 410, and the second coupling module 70 is arranged "close to" the second signal line 430, so that the overall layout of the bare core 10 is more compact.

[0098] In some possible embodiments, the first coupling module 60 is spaced apart from the first connecting section 4120 in the second direction Y, and the second coupling module 70 is spaced apart from the first connecting section 4120 in the second direction Y. Specifically, the second ground port 1290 is disposed between the second coupling module 70 and the first connecting section 4120 , which can spatially isolate signals to prevent the second detection signal generated by the second coupling module 70 from affecting normal transmission of signals in the first signal line 410 .

[0099] exist Figure 2In the embodiment shown, the bare core 100 may also be provided with a detection port 810, and the detection port 810 is used to output the first detection signal or the second detection signal. As an implementation method, the detection port 810 may be Figure 3 The RF switch chip 100 may further include a switching switch module 80 disposed on the bare core 10, the switching switch module 80 being connected between the first coupling module 60 and the detection port 810 so that the first coupling module 60 can be selectively electrically connected to the detection port 810; the switching switch module 80 is also connected between the second coupling module 70 and the detection port 810 so that the second coupling module 70 can be selectively electrically connected to the detection port 810. Therefore, the present embodiment can realize the selective output of the first detection signal and the second detection signal to the external circuit by setting the switching switch module 80, so that the output of the detection signal is more flexible.

[0100] Specifically, the switching module 80 is located in the target area 1072 and is arranged between the first coupling module 60 and the second coupling module 70. Exemplarily, the first coupling module 60, the switching module 80 and the second coupling module 70 can be arranged in sequence in the first direction X to reduce the signal routing between the first coupling module 60 and the switching module 80 and to reduce the signal routing between the second coupling module 70 and the switching module 80, so that the overall structure of the RF switch chip 100 can be more compact. Specifically, the switching module 80 can include a plurality of switching switches, and the switching switch can be a MOSFET tube or a BJT tube. The specific implementation of the switching module 80 is not limited in this embodiment.

[0101] The embodiment of the present application provides a radio frequency switch chip 100 configured with a radio frequency front-end module 200 of the radio frequency switch chip 100, and the radio frequency switch chip 100 may include a bare core 10 and a radio frequency switch module 30 arranged on the bare core 10. The bare core 10 may be provided with a first signal line 410, a second signal line 430 and a plurality of antenna ports 450, and the first signal line 410 and the second signal line 430 are used to transmit radio frequency signals of different communication frequency bands respectively. In this embodiment, at least part of the first signal line 410 extends along the first direction X, and at least part of the second signal line 430 extends along the second direction Y, and the angle between the first direction X and the second direction Y is greater than or equal to 60 degrees, and less than or equal to 120 degrees. For example, the above angle may be 60 degrees, 80 degrees, 90 degrees, 100 degrees, 120 degrees, and so on. In some other possible embodiments, the angle between the first direction X and the second direction Y may be greater than or equal to 80 degrees, and less than or equal to 100 degrees.

[0102] Ideally, the angle between the first direction X and the second direction Y is equal to 90 degrees (that is, the first direction X and the second direction Y are perpendicular to each other). At this time, at least part of the first signal line 410 and at least part of the second signal line 430 are perpendicular to each other, so that when radio frequency signals of different communication frequency bands are transmitted in the corresponding signal lines, since the parallel distance corresponding to the two signal lines is the shortest in space, the isolation between the corresponding transmission paths of different radio frequency signals can be improved to ensure the transmission quality of the radio frequency signal. The "parallel distance corresponding to the two signal lines" here can be understood as the projection distance of the first signal line 410 extending along the first direction X in a direction perpendicular to the second direction Y. Of course, when the angle between the first direction X and the second direction Y is equal to 60 degrees, 80 degrees, 100 degrees, 120 degrees, etc., due to the existence of the angle, the parallel distance corresponding to the two signal lines can also be shortened to ensure the isolation between the corresponding transmission paths of different radio frequency signals.

[0103] In this embodiment, the RF switch module 30 may include a first switch unit 320 and a second switch unit 340, and the plurality of antenna ports 450 may include a first portion of antenna ports 4520 and a second portion of antenna ports 4540. The first portion of antenna ports 4520 may be understood as a portion of the plurality of antenna ports 450, and the second portion of antenna ports 4540 may be understood as another portion of the plurality of antenna ports 450.

[0104] Specifically, the first signal line 410 is connected to the first antenna port 4520 through the first switch unit 320, and the first switch unit 320 is used to turn on or off the signal branch between the first signal line 410 and the first antenna port 4520. The second signal line 430 is connected to the second antenna port 4540 through the second switch unit 340, and the second switch unit 340 is used to turn on or off the signal branch between the second signal line 430 and the second antenna port 4540. Among them, the first antenna port 4520 and the second antenna port 4540 respectively have antenna ports 450 connected to the same antenna.

[0105] In this embodiment, the number of antenna ports 450 for connecting to the same antenna can be multiple (for example, two), and the multiple antenna ports 450 for connecting to the same antenna can be respectively arranged at different positions of the bare core 10, and respectively connected to different signal lines through corresponding switch units. Therefore, when radio frequency signals of different communication frequency bands need to be transmitted to the outside world through the same antenna, the isolation between the corresponding transmission paths of different radio frequency signals can be guaranteed to improve the signal quality of the radio frequency signal during transmission.

[0106] In the specification of this application, certain words are used to refer to specific components in the specification and claims. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of the components as the criterion for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to"; "substantially" means that those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0107] In the description of the present application, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", and "inside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are merely simplified descriptions for the convenience of describing the present application. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0108] In this application, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be internal communication between two elements, or it can be only surface contact. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0109] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0110] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A radio frequency switch chip, characterized in that: It includes a bare core and a radio frequency switch module arranged on the bare core; The bare core is provided with a first signal line, a second signal line and a plurality of antenna ports, wherein the first signal line and the second signal line are used to transmit radio frequency signals of different communication frequency bands respectively; wherein at least part of the first signal line extends along a first direction, and at least part of the second signal line extends along a second direction, and an angle between the first direction and the second direction is greater than or equal to 60 degrees and less than or equal to 120 degrees; The RF switch module includes a first switch unit and a second switch unit, and the multiple antenna ports include a first part of antenna ports and a second part of antenna ports; the first signal line is connected to the first part of antenna ports through the first switch unit, and the first switch unit is used to turn on or off the signal branch between the first signal line and the first part of antenna ports; the second signal line is connected to the second part of antenna ports through the second switch unit, and the second switch unit is used to turn on or off the signal branch between the second signal line and the second part of antenna ports; wherein, there are antenna ports connected to the same antenna in the first part of antenna ports and the second part of antenna ports respectively.

2. The radio frequency switch chip according to claim 1, characterized in that: An angle between the first direction and the second direction is greater than or equal to 80 degrees and less than or equal to 100 degrees.

3. The radio frequency switch chip according to claim 1, characterized in that: The first direction and the second direction are perpendicular to each other.

4. The radio frequency switch chip according to claim 1, characterized in that: The first signal line and the second signal line are spaced apart in the first direction, and the first part of the antenna ports, the first switch unit and the first signal line are all located on the same side of the second signal line; The second part of antenna ports and the second switch unit are both located on the other side of the second signal line.

5. The radio frequency switch chip according to claim 1, characterized in that: The bare core is further provided with a third signal line, and the first signal line, the second signal line and the third signal line are used to transmit radio frequency signals of different communication frequency bands respectively; the third signal line extends along the first direction, and the third signal line and the first signal line are both located on the same side of the second signal line and are spaced apart in the second direction; The RF switch module also includes a third switch unit, and the third signal line is connected to at least part of the first part of the antenna ports through the third switch unit. The third switch unit is used to turn on or off the signal branch between the third signal line and the first part of the antenna ports.

6. The radio frequency switch chip according to claim 5, characterized in that: The third signal line is spaced apart from the second signal line in the first direction, and the first portion of antenna ports, the first switch unit, the first signal line, the third switch unit, and the third signal line are all located on the same side of the second signal line; The second part of antenna ports and the second switch unit are both located on the other side of the second signal line.

7. The radio frequency switch chip according to claim 5, characterized in that: The first part of antenna ports includes a plurality of antenna ports respectively used to connect different antennas; The plurality of antenna ports included in the first part of antenna ports are sequentially arranged at intervals in the first direction and are located between the first signal line and the third signal line.

8. The radio frequency switch chip according to claim 7, characterized in that: The first part of antenna ports includes a first antenna port and a second antenna port, the first antenna port and the second antenna port are symmetrically arranged about a first axis, and the first axis extends along the second direction; The first switch unit includes a first switch and a second switch, the first switch is connected between the first antenna port and the first signal line, the second switch is connected between the second antenna port and the first signal line, and the first switch and the second switch are symmetrically arranged about the first axis; The third switch unit includes a third switch and a fourth switch, the third switch is connected between the first antenna port and the third signal line, the fourth switch is connected between the second antenna port and the third signal line, and the third switch and the fourth switch are symmetrically arranged about the first axis.

9. The radio frequency switch chip according to claim 8, characterized in that: The first part of antenna ports also includes a third antenna port, and the third antenna port is located on the first axis; The first switch unit further includes a fifth switch, wherein the fifth switch is connected between the third antenna port and the first signal line, and the fifth switch is located on the first axis.

10. The radio frequency switch chip according to claim 9, characterized in that: The bare core is further provided with a first grounding trace, the first grounding trace extends along the first direction and is located between the third antenna port and the third signal line; The RF switch module further includes a first grounding switch, a second grounding switch, a third grounding switch and a fourth grounding switch, wherein the first grounding switch is connected between the first antenna port and the first grounding trace, the second grounding switch is connected between the second antenna port and the first grounding trace, and the first grounding switch and the second grounding switch are symmetrically arranged about the first axis; The third ground switch is connected between the third antenna port and the first ground trace, the fourth ground switch is connected between the third signal line and the first ground trace, and the third ground switch and the fourth ground switch are respectively located on the first axis.

11. The radio frequency switch chip according to claim 8, characterized in that: The first part of antenna ports further includes a fourth antenna port and a fifth antenna port, wherein the fourth antenna port and the fifth antenna port are symmetrically arranged about a second axis, and the second axis extends along the second direction and does not coincide with the first axis; The first switch unit includes a sixth switch and a seventh switch, the sixth switch is connected between the fourth antenna port and the first signal line, the seventh switch is connected between the fifth antenna port and the first signal line, and the sixth switch and the seventh switch are symmetrically arranged about the second axis; The third switch unit includes an eighth switch and a ninth switch, the eighth switch is connected between the fourth antenna port and the third signal line, the ninth switch is connected between the fifth antenna port and the third signal line, and the eighth switch and the ninth switch are symmetrically arranged about the second axis.

12. The radio frequency switch chip according to claim 11, characterized in that: The bare core is further provided with a second grounding trace, the second grounding trace extends along the first direction and is located on the second axis; The RF switch module also includes a fifth grounding switch and a sixth grounding switch, the fifth grounding switch is connected between the fourth antenna port and the second grounding trace, the sixth grounding switch is connected between the fifth antenna port and the second grounding trace, and the fifth grounding switch and the sixth grounding switch are symmetrically arranged about the second axis.

13. The radio frequency switch chip according to claim 1, characterized in that: The radio frequency switch chip is arranged on the substrate by using a flip-chip process; The antenna ports in the first part of antenna ports and the second part of antenna ports that are used to connect to the same antenna are connected via metal traces arranged on the substrate, and the metal traces are used to connect to antenna interfaces arranged on the substrate.

14. The radio frequency switch chip according to claim 1, characterized in that: The second part of antenna ports includes a plurality of antenna ports respectively used to connect different antennas; At least part of the plurality of antenna ports included in the second part of antenna ports are sequentially spaced apart in the second direction.

15. The radio frequency switch chip according to claim 14, characterized in that: The second part of antenna ports includes a sixth antenna port and a seventh antenna port, the sixth antenna port and the seventh antenna port are symmetrically arranged about a third axis, and the third axis extends along the first direction; The second switch unit includes a tenth switch and an eleventh switch, the tenth switch is connected between the sixth antenna port and the second signal line, the eleventh switch is connected between the seventh antenna port and the second signal line, and the tenth switch and the eleventh switch are symmetrically arranged about the third axis.

16. The radio frequency switch chip according to claim 15, characterized in that: The bare core is further provided with a first grounding port, and the first grounding port is located on the third axis; The RF switch module also includes a seventh grounding switch and an eighth grounding switch, the seventh grounding switch is connected between the sixth antenna port and the first grounding port, the eighth grounding switch is connected between the seventh antenna port and the first grounding port, and the seventh grounding switch and the eighth grounding switch are symmetrically arranged about the third axis.

17. The radio frequency switch chip according to claim 15, characterized in that: The bare core is also provided with a main set receiving port group and a diversity receiving port group; the sixth antenna port and the main set receiving port group are both located on the same side of the third axis, and the seventh antenna port and the diversity receiving port group are both located on the other side of the third axis; The RF switch module further includes a fourth switch unit and a fifth switch unit, wherein the fourth switch unit is connected between the sixth antenna port and the main set receiving port group and is used to switch on or off a signal branch between the sixth antenna port and the main set receiving port group; The fifth switch unit is connected between the seventh antenna port and the diversity reception port group, and is used to switch on or off a branch of a signal between the seventh antenna port and the diversity reception port group.

18. The radio frequency switch chip according to claim 17, characterized in that: The fourth switch unit and the fifth switch unit are symmetrically arranged about the third axis; The second switch unit, the fourth switch unit and the fifth switch unit are all located at the same side of the second signal line.

19. The radio frequency switch chip according to claim 17, characterized in that: The main set receiving port group includes a first main set receiving port and a second main set receiving port, the diversity receiving port group includes a first diversity receiving port and a second diversity receiving port, and the first main set receiving port, the second main set receiving port, the first diversity receiving port and the second diversity receiving port are sequentially arranged in intervals in the second direction; The fourth switch unit includes a twelfth switch and a thirteenth switch, the twelfth switch is connected between the sixth antenna port and the first main set receiving port, and the thirteenth switch is connected between the sixth antenna port and the second main set receiving port; The fifth switch unit includes a fourteenth switch and a fifteenth switch, the fourteenth switch is connected between the seventh antenna port and the first diversity receiving port, and the fifteenth switch is connected between the seventh antenna port and the second diversity receiving port.

20. The radio frequency switch chip according to claim 19, characterized in that: The second part of antenna ports further includes an eighth antenna port, and the eighth antenna port is located on the third axis; The radio frequency switch module further includes a sixteenth switch, the sixteenth switch is connected between the eighth antenna port and the first diversity receiving port, and the sixteenth switch is located on the third axis.

21. The radio frequency switch chip according to claim 20, characterized in that: The sixth antenna port, the eighth antenna port, and the seventh antenna port are sequentially spaced apart in the second direction; The twelfth switch, the thirteenth switch, the sixteenth switch, the fourteenth switch and the fifteenth switch are sequentially arranged in intervals in the second direction.

22. The radio frequency switch chip according to claim 19, characterized in that: The bare core is further provided with a third grounding wire, the third grounding wire extends along the second direction and is located at a side of the main set receiving port group away from the fourth switch unit; The RF switch module further includes a ninth grounding switch, a tenth grounding switch, an eleventh grounding switch and a twelfth grounding switch, the ninth grounding switch is connected between the first main set receiving port and the third grounding trace, the tenth grounding switch is connected between the second main set receiving port and the third grounding trace, the eleventh grounding switch is connected between the first diversity receiving port and the third grounding trace, and the twelfth grounding switch is connected between the second diversity receiving port and the third grounding trace.

23. The radio frequency switch chip according to claim 19, characterized in that: The second part of antenna ports further includes a ninth antenna port, and the radio frequency switch module further includes a seventeenth switch, wherein the seventeenth switch is connected between the ninth antenna port and the first main set receiving port; The ninth antenna port, the first main set receiving ports and the second main set receiving ports are sequentially arranged at intervals in the second direction.

24. The radio frequency switch chip according to claim 23, characterized in that: The second part of antenna ports further includes a tenth antenna port, and the second switch unit further includes an eighteenth switch, and the eighteenth switch is connected between the tenth antenna port and the second signal line; The tenth antenna port and the ninth antenna port are spaced apart in the first direction, and the tenth antenna port is located on a side of the ninth antenna port close to the second signal line.

25. The radio frequency switch chip according to any one of claims 1 to 24, characterized in that: The first signal line includes a first connecting section and a second connecting section, the first connecting section extends along the first direction; one end of the first connecting section is spaced apart from the second signal line in the first direction, and the other end of the first connecting section is connected to the second connecting section; The second connecting segment extends along the second direction and is located at a side of the first connecting segment away from the first switch unit. The second connecting segment, the first connecting segment and at least a portion of the second signal line jointly define a target area.

26. The radio frequency switch chip according to claim 25, characterized in that: The bare core is also provided with a second ground port, and the second ground port is located in the target area; The radio frequency switch module further includes a thirteenth grounding switch and a fourteenth grounding switch, the thirteenth grounding switch is connected between the second signal line and the second grounding port, and the fourteenth grounding switch is connected between the first connecting section and the second grounding port.

27. The radio frequency switch chip according to claim 25, characterized in that: The first signal line is used to transmit a first radio frequency signal, and the second signal line is used to transmit a second radio frequency signal; the radio frequency switch chip further includes a first coupling module and a second coupling module disposed on the bare core, and the first coupling module and the second coupling module are located in the target area; The first coupling module is coupled to the second connecting section, and the first coupling module is used to output a first detection signal, and the first detection signal is used to reflect the signal power of the first radio frequency signal; the second coupling module is coupled to the second signal line; the second coupling module is used to output a second detection signal, and the second detection signal is used to reflect the signal power of the second radio frequency signal.

28. The radio frequency switch chip according to claim 27, characterized in that: The first coupling module is spaced apart from the first connecting section in the second direction; The second coupling module is spaced apart from the first connecting section in the second direction.

29. The radio frequency switch chip according to claim 27, characterized in that: The bare core is further provided with a detection port, and the detection port is used to output the first detection signal or the second detection signal. The radio frequency switch chip also includes a switching switch module arranged on the bare core; The switching switch module is connected between the first coupling module and the detection port, so that the first coupling module can be selectively electrically connected to the detection port; the switching switch module is also connected between the second coupling module and the detection port, so that the second coupling module can be selectively electrically connected to the detection port; The switch module is located in the target area and is arranged between the first coupling module and the second coupling module.

30. The radio frequency switch chip according to any one of claims 1 to 24, characterized in that: The first signal line is used to transmit radio frequency signals in the N77 frequency band; the second signal line is used to transmit radio frequency signals in the N79 frequency band.

31. A radio frequency front-end module, characterized in that: include: substrate; as well as The RF switch chip according to any one of claims 1 to 30, wherein the RF switch chip is disposed on the substrate.

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