CN213661596U - Radio frequency L-PA Mid device, radio frequency transceiving system and communication equipment - Google Patents
Radio frequency L-PA Mid device, radio frequency transceiving system and communication equipment Download PDFInfo
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Abstract
The application provides a radio frequency L-PA Mid device, a radio frequency transceiving system and a communication device, the radio frequency L-PA Mid device is configured with a coupling output port, a coupling input port, a transmitting port and an antenna port, the radio frequency L-PA Mid device comprises a coupling unit and a multi-channel selection switch, a plurality of first ends of the multi-channel selection switch are respectively connected with a first coupling end, a second coupling end and a coupling input port of the coupling unit in a one-to-one correspondence manner, a plurality of second ends of the multi-channel selection switch are respectively connected with the coupling output port and a ground end in a one-to-one correspondence manner, the multi-channel selection switch is used for selectively outputting a forward coupling signal output by the first coupling end or a backward coupling signal output by the second coupling end through the coupling output port and switching on a coupling passage where the coupling input port and the coupling output port are located, and, the cost is low.
Description
Technical Field
The present application relates to the field of radio frequency technologies, and in particular, to a radio frequency L-PA Mid device, a radio frequency transceiving system, and a communication device.
Background
With the development and progress of the technology, the 5G mobile communication technology is gradually beginning to be applied to electronic devices. The 5G mobile communication technology communication frequency is higher than that of the 4G mobile communication technology. Generally, a plurality of couplers and a plurality of switches can be arranged in the radio frequency transceiving system to support the coupling switching control before a plurality of radio frequency signals, and the cost is high and the packaging size is large.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a radio frequency L-PA Mid device, a radio frequency transceiving system and communication equipment, and the radio frequency L-PA Mid device is small in packaging size and low in cost.
A radio frequency L-PA Mid device configured with a coupled output port, a coupled input port, a transmit port, and an antenna port, the radio frequency L-PA Mid device comprising:
a coupling unit, the coupling unit comprising:
the input end is coupled with the transmitting port and used for receiving radio frequency signals;
an output end coupled to the antenna port, configured to output the radio frequency signal to the antenna port;
a first coupling end for outputting a forward coupling signal;
the second coupling end is used for outputting a reverse coupling signal;
the multi-channel selection switch is used for selectively outputting the forward coupling signal or the backward coupling signal through the coupling output port and switching on the coupling path where the coupling input port and the coupling output port are located.
A radio frequency L-PA Mid device configured with a coupled output port, a coupled input port, a plurality of transmit ports, and a plurality of antenna ports, the radio frequency L-PA Mid device comprising:
a plurality of coupling units, the coupling units comprising:
the input end is connected with one transmitting port and used for receiving radio frequency signals of any frequency band;
the output end is coupled with one antenna port and used for outputting the radio frequency signal to the antenna port;
a first coupling end for outputting a forward coupling signal;
the second coupling end is used for outputting a reverse coupling signal;
the switch unit, a plurality of first ends of switch unit respectively with each coupling unit's first coupling end, second coupling end one-to-one connection, a plurality of second ends of switch unit respectively with coupling output port, coupling input end, ground end one-to-one connection, the switch unit is used for selectively with forward coupling signal or backward coupling signal pass through coupling output port exports, still is used for switching on coupling route that coupling input port, coupling output port are located.
A radio frequency transceiving system comprising:
the two rf L-PA Mid devices as described above, wherein the coupling input terminal of one rf L-PA Mid device is connected to the coupling input terminal of the other rf L-PA Mid device,
the radio frequency transceiver is connected with the coupling output port of the other radio frequency L-PA Mid device;
and the antenna group comprises at least two antennas, and each antenna is correspondingly connected with an antenna port of the radio frequency L-PA Mid device.
A radio frequency transceiver system, comprising:
an antenna group comprising a first antenna, a second antenna, a third antenna and a fourth antenna;
the radio frequency L-PA Mid device is denoted as a first radio frequency L-PA Mid device, and the first radio frequency L-PA Mid device is configured to support transceiving processing of a radio frequency signal in a low frequency band;
the rf L-PA Mid device, or the rf L-PA Mid device, is denoted as a second rf L-PA Mid device, wherein a coupling input terminal of the second rf L-PA Mid device is connected to a coupling input terminal of the first rf L-PA Mid device; the first radio frequency L-PA Mid device is used for supporting the transceiving processing of a plurality of radio frequency signals of middle and high frequencies;
the radio frequency transceiver is connected with the coupling output end of the second radio frequency L-PA Mid device;
the diversity receiving module is provided with a low-frequency antenna port, a medium-high frequency antenna port and a medium-high frequency transceiving port and is used for supporting diversity receiving amplification processing of a plurality of radio frequency signals of a low frequency band, a medium frequency band and a high frequency band;
the switch module is respectively connected with the first radio frequency L-PA Mid device, the second radio frequency L-PA Mid device and the diversity receiving module;
the combiner module is correspondingly connected with the switch module, the diversity receiving module, the first antenna, the second antenna, the third antenna and the fourth antenna respectively;
the radio frequency transceiving system is used for supporting the 1T4R function of the channel sounding reference signal of a plurality of radio frequency signals of a low frequency band and a medium frequency band.
A communication device, comprising: such as the rf transceiver system described above.
The radio frequency L-PA Mid device, the radio frequency transceiving system and the communication equipment are configured with a coupling output port, a coupling input port, a transmitting port and an antenna port, the radio frequency L-PA Mid device comprises a coupling unit and a multi-channel selection switch, a plurality of first ends of the multi-channel selection switch are respectively and correspondingly connected with a first coupling end, a second coupling end and a coupling input port of the coupling unit, a plurality of second ends of the multi-channel selection switch are respectively and correspondingly connected with the coupling output port and a ground end, forward coupling signals or backward coupling signals can be selectively output through the coupling output port only by arranging the coupling unit and the multi-channel selection switch, the coupling path where the coupling input port and the coupling output port are located can be switched on, and the integration level of a coupler module in the radio frequency L-PA Mid device is improved, the occupied area inside the radio frequency L-PA Mid device is saved, the logic control on the coupler module is simplified, the complexity of device control is favorably reduced, and meanwhile, the cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is one of the schematic structural diagrams of an rf L-PA Mid device according to an embodiment;
FIG. 2 is a schematic structural diagram of a coupling unit according to an embodiment;
fig. 3 is a second schematic structural diagram of an rf L-PA Mid device according to an embodiment;
fig. 4 is a third schematic structural diagram of an rf L-PA Mid device according to an embodiment;
FIG. 5 is a fourth schematic structural diagram of an RF L-PA Mid device according to an embodiment;
FIG. 6 is a fifth schematic structural view of an exemplary radio frequency L-PA Mid device;
FIG. 7 is a sixth schematic diagram of an exemplary RF L-PA Mid device;
FIG. 8 is a seventh schematic diagram illustrating the structure of an exemplary RF L-PA Mid device;
fig. 9 is an eighth schematic structural diagram of an rf L-PA Mid device according to an embodiment;
FIG. 10 is a ninth schematic diagram illustrating the structure of an exemplary RF L-PA Mid device;
FIG. 11 is a cross-sectional view of an exemplary RF L-PA Mid device;
FIG. 12 is an eleventh schematic diagram of an exemplary RF L-PA Mid device;
FIG. 13 is a twelfth schematic structural diagram of an exemplary RF L-PA Mid device;
fig. 14 is a thirteen schematic structural diagram of an rf L-PA Mid device according to an embodiment;
FIG. 15 is a fourteenth schematic diagram illustrating the structure of an exemplary RF L-PA Mid device;
fig. 16 is a fifteen schematic structural diagram of an rf L-PA Mid device according to an embodiment;
fig. 17a is a schematic pin layout of the rf L-PA Mid device shown in fig. 7;
fig. 17b is a schematic packaging diagram of the rf L-PA Mid device shown in fig. 7;
fig. 18a is a schematic pin layout of the rf L-PA Mid device shown in fig. 16;
fig. 18b is a schematic packaging diagram of the rf L-PA Mid device shown in fig. 16;
fig. 19 is a schematic structural diagram of an rf transceiver system according to an embodiment;
fig. 20 is a second schematic structural diagram of an rf transceiver system according to an embodiment;
fig. 21 is a third schematic structural diagram of an rf transceiver system according to an embodiment;
fig. 22 is a fourth schematic structural diagram of an rf transceiver system according to an embodiment.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to provide a thorough understanding of the present application, and in the accompanying drawings, preferred embodiments of the present application are set forth. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the description of the present application, "a number" means at least one, such as one, two, etc., unless specifically limited otherwise.
The radio frequency transceiving system according to the embodiment of the present application may be applied to a communication device having a wireless communication function, where the communication device may be a handheld device, a vehicle-mounted device, a wearable device, a computing device or other processing devices connected to a wireless modem, and various forms of User Equipment (UE) (e.g., a Mobile phone), a Mobile Station (MS), and the like. For convenience of description, the above-mentioned devices are collectively referred to as a communication device. The network devices may include base stations, access points, and the like.
As shown in fig. 1, the embodiment of the present application provides a radio frequency L-PA Mid device. The rf L-PA Mid device can be understood as a Power Amplifier module (Power Amplifier Modules including LNAs) With a built-in low noise Amplifier. The radio frequency L-PA Mid device can be used for transmitting radio frequency signals of a plurality of different working frequency bands, and can couple each transmitted radio frequency signal to selectively output a forward coupling signal and a reverse coupling signal of each radio frequency signal. Wherein the radio frequency L-PA Mid device is configured with a coupling output port CPLOUT, a coupling input port CPLIN, a transmit port LB RFIN, and an antenna port LB ANT. The coupling output port CPLOUT is used for connecting with the radio frequency transceiver, and outputting the forward coupling signal or the backward coupling signal coupled and output by the coupling unit to the radio frequency transceiver to realize power detection of the coupling signal. The coupling input port CPLIN is used for being connected with other external radio frequency L-PA Mid devices with coupling output ports CPLEUT, receiving coupling signals output by the other external radio frequency L-PA Mid devices, and outputting the received coupling signals to the radio frequency transceiver through the coupling output ports CPLEUT of the radio frequency L-PA Mid devices so as to realize transmission of other external coupling signals. The transmitting port LB RFIN is used for connecting with the radio frequency transceiver and receiving radio frequency signals of different frequency bands sent by the radio frequency transceiver. The antenna port LB ANT is used for connecting to an antenna, receiving radio frequency signals received by the antenna, and transmitting radio frequency signals to the antenna.
The radio frequency L-PA Mid device includes a coupling unit 110 and a multi-channel selection switch 120. Specifically, the rf L-PA Mid device may be understood as a packaged chip, and the coupling unit 110 and the multi-channel selection switch 120 are integrated in the same packaged chip. The coupling output port CPLOUT, the coupling input port CPLIN, the transmitting port LB RFIN and the antenna port LB ANT can be understood as radio frequency pins configured on the radio frequency L-PA Mid device and connected with other modules.
In one embodiment, a plurality of transmitting circuits for transmitting radio frequency signals of different frequency bands are arranged in the radio frequency L-PA Mid device to form corresponding transmitting paths. The coupling unit 110 is correspondingly disposed on one transmitting path to enable coupling out of the radio frequency signal, and the coupled out coupling signal can be used for measuring the coupling power of the radio frequency signal. Specifically, the coupling unit 110 includes an input terminal a, an output terminal b, a first coupling terminal c, and a second coupling terminal d. Meanwhile, the coupling unit 110 further includes a main line extending between the input terminal a and the output terminal b, and a sub line extending between the first coupling terminal c and the second coupling terminal d.
The input end a is connected with a transmitting port LB RFIN and used for receiving radio frequency signals of any frequency band; the output end b is connected with an antenna port LB ANT and used for outputting received radio frequency signals to an antenna; the first coupling end c is used for coupling the radio frequency signal received by the input end a and outputting a forward coupling signal; and the second coupling end d is used for coupling the reflected signal of the radio-frequency signal received by the output end b and outputting a reverse coupling signal. Based on the forward coupling signal output by the first coupling end c, the forward power information of the radio frequency signal can be detected; based on the reverse coupling signal outputted from the second coupling terminal d, the reverse power information of the rf signal can be correspondingly detected, and the detection mode is defined as a reverse power detection mode.
It should be noted that, in the embodiment of the present application, the first coupling terminal c may be referred to as a forward power output terminal, and the second coupling terminal d may be referred to as a reverse power output terminal.
A plurality of first ends of the multichannel selection switch 120 are respectively connected with the first coupling end c, the second coupling end d, and the coupling input port CPLIN of each coupling unit 110 in a one-to-one correspondence manner, and a plurality of second ends of the multichannel selection switch 120 are respectively connected with the coupling output port CPLOUT and the ground end in a one-to-one correspondence manner. The multichannel selection switch 120 is used to selectively output the forward coupled signal or the backward coupled signal through the coupled output port CPLOUT.
Specifically, the multichannel selection switch 120 is configured to selectively transmit a forward coupling signal corresponding to any radio frequency signal to the coupling output port CPLOUT, and transmit an output backward coupling signal to the ground, so as to implement detection of forward power of the radio frequency signal, and define the detection mode as a forward power detection mode, and also selectively transmit the forward coupling signal of any radio frequency signal to the ground, and transmit the output backward coupling signal to the coupling output port CPLOUT, so as to implement detection of backward power of the radio frequency signal, and define the detection mode as a backward power detection mode. That is, the multi-channel select switch 120 is used to switch between a forward power detection mode and a reverse power detection mode. Meanwhile, the multichannel selection switch 120 is used for switching on the coupling paths where the coupling input port CPLIN and the coupling output port CPLOUT are located. That is, the multichannel selection switch 120 may select a coupling channel for conducting the coupling signal generated by the radio frequency L-PA Mid device, that is, a coupling path where the coupling output port CPLOUT is located. The multichannel selection switch 120 may also selectively turn on a transmission channel of a coupling signal generated by the external radio frequency L-PA Mid device, so that the external coupling signal may be input through the coupling input port CPLIN and output through the coupling output port CPLOUT, that is, turn on a coupling path where the coupling input port CPLIN is located.
In the radio frequency L-PA Mid device, only one multi-channel selection switch 120 is needed to selectively output the forward coupling signal or the backward coupling signal of the radio frequency signal through the coupling output port, and the coupling path where the coupling input port and the coupling output port are located can be switched on, so that the coupling input and the coupling output of the radio frequency signal can be switched, the area occupied by the package is reduced, and the cost is also reduced. Meanwhile, the logic control of the coupler module (including the coupling unit 110 and the multi-channel selection switch 120) is simplified, which is beneficial to reducing the complexity of device control and simultaneously reducing the cost. Meanwhile, by setting the coupling input port CPLIN, the coupler module of the radio frequency L-PA Mid device can be used as a radio frequency feedback channel to output coupling signals output by other devices, so that the routing length of radio frequency can be shortened, the complexity of the layout of a radio frequency transceiving system is reduced, meanwhile, the area of a PCB (printed circuit board) occupied by the radio frequency transceiving system is reduced, and the cost is reduced.
As shown in fig. 2, in one embodiment, the coupling unit 110 includes a first directional coupler 112 and a second directional coupler 114 connected in series in opposite directions. The first directional coupler 112 and the second directional coupler 114 each include two portions of a main line and a sub line, which are coupled to each other through various forms of small holes, slits, gaps, and the like. The radio frequency signal flows through the input end a of the main line and then reaches the output end b. The power of the radio frequency signal passing through the main line is partially coupled into the secondary line, and due to the interference or superposition of the waves, the power is transmitted only in one direction (called "forward direction") along the secondary line, while almost no power is transmitted in the other direction (called "reverse direction").
Assuming that the degree of coupling of the directional coupler is dB, when the power of the input terminal a is 0dBm, the power of the coupled output port CPLOUT is-10 dBm. The main parameters of a directional coupler of a general communication device are shown in table 1. When the output power of the communication transmitter is 26dBm, a signal with 1dBm is sent to the communication feedback detection channel at the coupling end, the through output of the directional coupler is 25.8dBm, and the reverse coupling output power leaked to the isolation end is absorbed by a load.
TABLE 1 coupler Key indices
| Degree of coupling | Degree of reverse coupling | Insertion loss | Maximum input power |
| 25dB | 25dB | 0.2dB | 33dBm |
In the embodiment of the present application, the coupling unit 110 includes a first directional coupler 112 and a second directional coupler 114. The first directional coupler 112 may be a forward coupler and the second directional coupler 114 may be a reverse coupler. Referring to fig. 2, the first directional coupler 112 and the second directional coupler 114 are connected in series in an inverted manner, wherein a coupling end of the first directional coupler 112 serves as a first coupling end c of the coupling unit 110, a coupling end of the second directional coupler 114 serves as a second coupling end d of the coupling unit 110, and isolation ends of the first directional coupler 112 and the second directional coupler 114 are grounded via a communication load. Illustratively, the shunt resistor R1' may act as a communication load for the first directional coupler and the second directional coupler 114. The shunt resistance R2' may be sized to be 50 ohms. Illustratively, the adjustable communication load may be realized by providing one or more tunable impedance elements, such as tunable or variable capacitors, inductors or resistors.
It should be noted that, in the embodiment of the present application, the specific form of the coupling unit 110 is not further limited, and the coupling unit 110 may also be formed by a bidirectional coupler and a directional coupler, and the specific form thereof is not further limited in the example of the present application.
As shown in fig. 3, in one embodiment, the number of coupling units 110, transmit ports LB RFIN, antenna ports LB ANT is the same. The input end a of the coupling unit 110 is coupled to the transmission port LB RFIN, and the output end b of the coupling unit 110 is connected to the antenna port LB ANT. Specifically, the number of the coupling unit 110, the transmission port LB RFIN, and the antenna port LB ANT is one. The radio frequency L-PA Mid device further includes a first resistor, wherein the multichannel selection switch 120 includes three first ends (1, 2, 3) and two second ends (4, 5), wherein the three first ends (1, 2, 3) are respectively connected to the first coupling end c, the second coupling end d, and the coupling input port CPLIN in a one-to-one correspondence manner, one second end (4) is connected to the coupling output port CPLOUT, and the other second end (4) is grounded through the first resistor R1.
Specifically, the multi-channel selection switch 120 may be a DP3T switch; the first resistors R1 may each be a 50 ohm resistor. When the forward power needs to be collected, the contact 4 of the DP3T switch is switched to the contact 2, the coupling output path of the forward coupling signal is turned on (or the forward power output is turned on), the contact 5 of the DP3T switch is switched to the contact 3, and the second coupling end d is connected to a 50 ohm load and grounded. When the reverse power needs to be collected, the contact 4 of the DP3T switch is switched to the contact 3, and a coupling output path of the reverse coupling signal is conducted (or reverse power output is turned on); contact 5 is cut to contact 2 and the first coupling end c is connected to a 50 ohm load to ground. Contact 4 of the DP3T switch outputs a coupling signal to the coupling output port CPLOUT, which is then transmitted to the feedback port FBRX for rf transceiving via the rf line connection.
When a second terminal of the multi-channel selection switch 120 is grounded via the first resistor R1, the leakage problem of the forward coupling signal or the backward coupling signal caused by the open switch contact of the coupling switch in the conventional scheme can be avoided. For example, when the coupling unit 110 is in the reverse power detection mode, the forward coupling signal leaked through the first coupling terminal c may be grounded through the load and may not be coupled to the second coupling terminal b, so that interference may not be caused to the second coupling terminal b; when the circuit is in the forward power detection mode, the leaked reverse coupling signal can be grounded through the load, and interference on the first coupling end c is avoided.
As shown in fig. 4, in one embodiment, the number of coupling units 110, transmit ports LB RFIN and antenna ports LB ANT are all one. The radio frequency L-PA Mid device comprises a first resistor R1 and a second resistor R2. The multichannel selection switch 120 includes three first terminals (1, 2, 3) and three second terminals (4, 5, 6), wherein the three first terminals (1, 2, 3) are respectively connected with the first coupling terminal c, the second coupling terminal d, and the coupling output port CPLOUT in a one-to-one correspondence manner, one second terminal (4) is connected with the coupling output port CPLOUT, the other second terminal (5) is grounded through the first resistor R1, the radio frequency L-PA Mid device further includes a second resistor R2, and the other second terminal (6) is grounded through the second resistor R2.
Specifically, the multi-channel selection switch 120 may be a 3P3T switch; the first resistor R1 and the second resistor R2 may each be 50 ohm resistors. When the forward power needs to be collected, the contact 4 of the 3P3T switch is switched to the contact 2, the coupling output path of the forward coupling signal is conducted, the contact 5 of the 3P3T switch is switched to the contact 3, and the second coupling end d is connected with a 50-ohm load to the ground. When reverse power collection is needed, the contact 4 of the 3P3T switch is switched to the contact 3, the coupling output path of the reverse coupling signal is conducted, the contact 5 of the 3P3T switch is switched to the contact 2, and the first coupling end c is connected with a 50-ohm load to the ground. Contact 4 of the 3P3T switch outputs the coupled signal to the coupled output port CPLOUT, which is then transmitted to the feedback port FBRX for rf transceiving via the rf line connection.
When an external coupling signal enters from the coupling input port CPLIN, the coupler module of the radio frequency L-PA Mid device can be used as a radio frequency feedback path. The specific rf feedback path is as follows:
the contact 1 of the 3P3T switch is switched to the contact 4, and a radio frequency feedback path of an external coupling signal is conducted; contact 5 of the 3P3T switch is switched to contact 4, which is connected to ground via a first resistor R1(50 Ω load), and contact 6 of the 3P3T switch is switched to contact 7, which is connected to ground via a second resistor R2(50 Ω load). That is, the external coupling signal can be transmitted to the coupling output port CPLOUT through the coupling input port CPLIN via the contact 1 and the contact 4 of the 3P3T switch, and then transmitted to the feedback port FBRX for rf transceiving via the rf line connection. By arranging the first resistor R1 and the second resistor R2, under the application scene that the coupler unit of the radio frequency L-PA Mid device is used as a radio frequency feedback path, the phenomenon that the coupled signal is leaked due to the fact that ports of the first coupled end c and the second coupled end d are suspended can be avoided, and therefore the phenomenon that the coupled signal is radiated to the second coupled end d due to the fact that the first coupled end c is suspended or the coupled signal is radiated to the first coupled end c due to the fact that the second coupled end d is suspended can be correspondingly eliminated, the anti-interference capability of the signals of the first coupled end c and the second coupled end d can be improved, and further the detection accuracy of the radio frequency L-PA Mid device for detecting forward power and reverse power is provided.
As shown in fig. 5 and 6, in one embodiment, the radio frequency L-PA Mid device is configured with a receive port LNA OUT. The radio frequency L-PA Mid device further includes a transmit circuit 130, a receive circuit 140, and a switch circuit 150. The transmitting circuit 130 is connected to the transmitting port LB RFIN, and configured to amplify a radio frequency signal received by the transmitting port LB RFIN; the receiving circuit 140 is connected to the receiving port LNA OUT, and is configured to amplify the received radio frequency signal. It should be noted that the number of the receiving ports LNA OUT may also be multiple, and the transmitting circuit 130 may also be configured to amplify radio frequency signals of different frequency bands received by the transmitting port LB RFIN; the receiving circuit 140 may also be configured to amplify the received radio frequency signals in multiple frequency bands.
The first ends of the switch circuit 150 are respectively connected to the transmitter circuit 130 and the receiver circuit 140 in a one-to-one correspondence manner, and each second end of the switch circuit 150 is respectively connected to the first input end a of each coupling unit 110 in a coupling manner, so as to selectively connect the radio frequency path between the transmitter port LB RFIN and any antenna port LB ANT, so as to input any radio frequency to the coupling unit 110, thereby enabling the coupling unit 110 to couple any radio frequency signal.
When the number of the coupling units 110 is one, the radio frequency L-PA Mid device is configured with a transmission port LB RFIN and an antenna port LB ANT. The transmitting circuit 130 is configured to amplify the received radio frequency signal in the low frequency band. The low-band rf signals may include signals in B12, B8, B20, and B26. As shown in fig. 7 and 8, the transmitting circuit 130 may include a first power amplifier 131, a first radio frequency switch 132, and a plurality of first filtering units 133. The input terminal of the first power amplifier 131 is connected to the transmitting port LB RFIN, and the output terminal of the first power amplifier 131 is connected to a first terminal of the first rf switch 132. Each second terminal of the first rf switch 132 is connected to the switch circuit 150 through a first filtering unit 133. That is, each second terminal of the first rf switch 132 is correspondingly connected to one terminal of one first filtering unit 133, the other terminal of each first filtering unit 133 is correspondingly connected to one first terminal of the switching circuit 150, and the second terminal of the switching circuit 150 is coupled to the input terminal a of the coupling unit 110, so as to output any rf signal of a low frequency band to the coupling unit 110, so that the coupling unit 110 couples the rf signal of the low frequency band and couples and outputs the forward coupling signal or the backward coupling signal.
The first power amplifier 131 may perform power amplification processing on one or more low-frequency band signals received through the transmission port LB RFIN, and further transmit the low-frequency band signals processed by the first power amplifier 131 to each first filtering unit 133 through the first radio frequency switch 132. The first filtering units 133 are configured to perform filtering processing on the low-frequency band signals, and frequency bands of the low-frequency band signals output by the first filtering units 133 are different. It will be appreciated that the filter paths in the plurality of transmit paths are independent of each other and do not coincide with each other. The first filtering unit 133 may correspondingly include a filter that allows only a low frequency band signal of a preset frequency band to pass through. Illustratively, the frequency band of the low frequency band signal may be at least one of four different frequency bands B12, B8, B20, B26. If four different frequency bands, i.e., B12, B8, B20, and B26, are included, four first filtering units 133 (i.e., four filters) may be correspondingly disposed to filter four low-frequency band signals.
In one embodiment, the receiving circuit 140 includes at least one low noise amplifier 141, at least one second rf switch 142, and a plurality of second filtering units 143. The output end b of each low noise amplifier 141 is correspondingly connected to a receiving port LNA OUT, the output end b of each low noise amplifier 141 is correspondingly connected to a first end of a second rf switch 142, a plurality of second ends of the second rf switch 142 are respectively connected to one end of a plurality of second filtering units 143 in a one-to-one correspondence manner, and the other end of the second filtering unit 143 is connected to the switch circuit 150.
The second filtering units 143 are respectively configured to filter the received low-frequency band signals, and the frequency band of the low-frequency band signal output by each second filtering unit 143 is different. The second filtering unit 143 has the same function as the first filtering unit 133, and is not described herein again.
The rf L-PA Mid device in this embodiment can implement transmission and reception processing of one or more rf signals in a low frequency band, and at the same time, based on the coupling unit 110 and the multi-channel selection switch 120, can output a forward coupling signal or a reverse coupling signal corresponding to any rf signal in the low frequency band through the coupling output port CPLOUT to implement switching between a forward power detection mode and a reverse power detection mode of any rf signal in the low frequency band, and can also implement switching and conducting a coupling path where the coupling input port and the coupling output port are located, thereby implementing coupling switching among a plurality of rf signals, reducing an occupied area of a package, and reducing cost, and at the same time, simplifying logic control of a coupler module (including the coupling unit 110 and the multi-channel selection switch 120), and facilitating reduction of complexity of device control, and simultaneously, the cost is also reduced. Meanwhile, by setting the coupling input port CPLIN, the coupler module of the radio frequency L-PA Mid device can be used as a radio frequency feedback channel to output coupling signals output by other devices, so that the routing length of radio frequency can be shortened, the complexity of the layout of a radio frequency transceiving system is reduced, meanwhile, the area of a PCB (printed circuit board) occupied by the radio frequency transceiving system is reduced, and the cost is reduced.
As shown in fig. 9, in one embodiment, when the number of the coupling units 110 is two, the radio frequency L-PA Mid device is configured with two transmission ports MB RFIN, HB RFIN and two antenna ports ANT1, ANT 2. Here, the two coupling units 110 may be referred to as a first coupling unit 111 and a second coupling unit 112, the two transmit ports may be referred to as a first transmit port MB RFIN and a second transmit port HB RFIN, and the two antenna ports may be referred to as a first antenna port ANT1 and a second antenna port ANT 2. The frequency bands of the radio frequency signals received by the first transmission port MB RFIN and the second transmission port HB RFIN are different. The input ends a of the two coupling units 110 are respectively coupled with the two transmitting ports MB RFIN and HB RFIN in a one-to-one correspondence manner, and the output ends b of the two coupling units are respectively coupled with the two antenna ports ANT1 and ANT2 in a one-to-one correspondence manner. That is, the input end a of the first coupling unit 111 is coupled to the first transmission port MB RFIN, and the input end a of the second coupling unit 112 is coupled to the second transmission port HB RFIN; the output terminal b of the first coupling unit 111 is connected to the first antenna port ANT1, and the output terminal b of the second coupling unit 112 is connected to the second antenna port ANT 2.
The radio frequency L-PA Mid device further includes a third resistor R3 and a fourth resistor R4, the multichannel selection switch 120 includes five first ends and three second ends, the five first ends are respectively connected with the first coupling end c, the second coupling end d, and the coupling input port CPLIN of each coupling unit 110 in a one-to-one correspondence manner, that is, the five first ends are respectively connected with the first coupling end c of the first coupling unit 111, the second coupling end d of the first coupling unit 111, the first coupling end c of the second coupling unit 112, the second coupling end d of the second coupling unit 112, and the coupling output port CPLOUT. A second terminal of the multichannel selection switch 120 is connected to the coupling output port CPLOUT, another second terminal is grounded via a third resistor R3, and another second terminal is grounded via a fourth resistor R4.
Specifically, the multi-channel selection switch 120 may be a 3P5T switch; the third resistor R3 and the fourth resistor R4 may each be 50 ohms resistors. Taking the coupling unit 111 of the path where the first antenna port ANT1 is located as an example, the operation principle is analyzed as follows:
when it is required to collect the forward power of the rf signal coupled by the first coupling unit 111, the contact 8 of the 3P5T switch is switched to the contact 2, the forward power output is turned on, the contact 7 of the 3P5T switch is switched to the contact 3, and the second coupling terminal d is connected to the ground through the fourth resistor R4(50 ohm load). When the reverse power of the radio frequency signal coupled by the first coupling unit 111 needs to be collected, the contact 8 of the 3P5T switch is switched to the contact 3, the reverse power output is turned on, the contact 7 of the 3P5T switch is switched to the contact 2, and the first coupling end c is connected to the ground through a third resistor R3(50 ohm load); the contact 8 of the 3P5T switch outputs the coupling signal to the coupling output port CPLOUT, which is then transmitted to the feedback port FBRX for rf transceiving via the rf line connection.
When the number of the coupling units 110 is two, the radio frequency L-PA Mid device provided in this embodiment may implement double coupling of radio frequency signals in two frequency bands (for example, a middle frequency band and a high frequency band), so as to implement coupling output of two radio frequency signals in any middle frequency band and any high frequency band, so as to implement switching between a forward power detection mode and a reverse power detection mode of two radio frequency signals in any middle frequency band and any high frequency band, and also implement switching of a coupling path where a coupling input port and a coupling output port are located, thereby reducing an area occupied by a package, and simultaneously reducing cost, and simultaneously simplifying logic control over a coupler module (including the coupling unit 110 and the multi-channel selection switch 120), which is beneficial to reducing complexity of device control, and simultaneously reducing cost. Meanwhile, by setting the coupling input port CPLIN, the coupler module of the radio frequency L-PA Mid device can be used as a radio frequency feedback channel to output coupling signals output by other devices, so that the routing length of radio frequency can be shortened, the complexity of the layout of a radio frequency transceiving system is reduced, meanwhile, the area of a PCB (printed circuit board) occupied by the radio frequency transceiving system is reduced, and the cost is reduced.
As shown in fig. 10, in one embodiment, in the radio frequency L-PA Mid device shown in fig. 9, the radio frequency L-PA Mid device in this embodiment further includes a fifth resistor R5 and a sixth resistor R6, and the multichannel selection switch 120 includes five second terminals, where one second terminal of the multichannel selection switch 120 is connected to the coupling output port CPLOUT, the other second terminal is grounded via the third resistor R3, the other second terminal is grounded via the fourth resistor R4, the other second terminal is grounded via the fifth resistor R5, and the other second terminal is grounded via the sixth resistor R6.
Specifically, the multi-channel selection switch 120 may be a 5P5T switch. The third resistor R3, the fourth resistor R4, the fifth resistor R5, and the sixth resistor R6 may all be 50 ohm resistors. Taking the coupling unit 111 of the path where the first antenna port ANT1 is located as an example, the operation principle of the coupling unit is analyzed as follows:
when the forward power of the rf signal coupled by the first coupling unit 111 needs to be collected, the contact 8 of the 5P5T switch is switched to the contact 2, the forward power output is turned on, and the contacts 6, 7, and 9 of the 5P5T switch are respectively switched to the contacts 3, 4, and 5, and then the 50 ohm load is connected to the ground. When the reverse power of the radio frequency signal coupled by the first coupling unit 111 needs to be collected, the contact 8 of the 5P5T switch is switched to the contact 3, the reverse power output is turned on, the contacts 6, 7 and 9 of the 5P5T switch are respectively switched to the contacts 2, 4 and 5, and a 50-ohm load is connected to the ground; contact 8 of 5P5T outputs the coupled signal to the coupled output port CPLOUT, which is then transmitted to the feedback port FBRX for rf transceiving via the rf line connection.
When an external coupling signal enters from the coupling input port CPLIN, the coupler unit of the radio frequency L-PA Mid device can be used as a radio frequency feedback path. The specific rf feedback path is as follows:
the contacts 2 and 5 of the 5P5T switch are respectively switched to the contacts 6 and 10 of the 5P5T switch in a one-to-one correspondence manner, and the contacts 6 and 10 are respectively grounded through a third resistor R3 and a sixth resistor R6(50 omega load); the contacts 3 and 4 of the 5P5T switch are respectively switched to the contacts 7 and 9 of the 5P5T switch in a one-to-one correspondence manner, and the contacts 7 and 9 are respectively grounded through a fourth resistor R4 and a fifth resistor R5(50 Ω load). That is, the external coupling signal can be transmitted to the coupling output port CPLOUT through the contact 1 and the contact 8 of the 5P5T switch via the coupling input port CPLIN, and then transmitted to the feedback port FBRX for rf transceiving via the rf line connection.
By arranging the third resistor R3, the fourth resistor R4, the fifth resistor R5 and the sixth resistor R6, under the application scene that the coupler unit of the radio frequency L-PA Mid device is used as a radio frequency feedback path, the phenomenon that the coupled signal leaks due to the fact that ports of the first coupled end c and the second coupled end d are suspended can be avoided, the phenomenon that the coupled signal radiates to the second coupled end d due to the fact that the first coupled end c of each coupling unit is suspended or the coupled signal radiates to the first coupled end c due to the fact that the second coupled end d is suspended can be correspondingly eliminated, the signal capacity of the first coupled end c and the second coupled end d can be improved, and the detection accuracy of the radio frequency L-PA Mid device for detecting forward power and reverse power is further improved.
As shown in fig. 11 and 12, in one embodiment, when the number of the coupling units 110 is two, the radio frequency L-PA Mid device is configured with a first transmission port MB RFIN, a second transmission port HB RFIN, and a plurality of reception ports LNA OUT. Wherein, the first transmitting port MB RFIN can be understood as an intermediate frequency transmitting port LB RFIN for receiving radio frequency signals of an intermediate frequency band; the second transmission port HB RFIN may be understood as a high frequency transmission port LB RFIN for receiving radio frequency signals of a high frequency band.
The radio frequency L-PA Mid device further includes a transmit circuit 130, a receive circuit 140, and a switch circuit 150. The transmitting circuit 130 includes a first transmitting unit 130a and a second transmitting unit 130 b. The first transmitting unit 130a is connected to the intermediate frequency transmitting port LB RFIN, and is configured to amplify and filter the received radio frequency signal of the intermediate frequency band. The radio frequency signals of the middle frequency band may at least include signals of frequency bands of B1, B3, B25, B34, B66, B39, etc. The second transmitting unit 130b is connected to the high frequency transmitting port LB RFIN, and is configured to amplify and filter the received high frequency band radio frequency signal. The high band rf signals may include signals in B30, B7, B40, B41, etc.
A plurality of first terminals of the switch circuit 150 are respectively connected to the first transmitting unit 130a and the second transmitting unit 130b, and two second terminals of the switch circuit 150 are respectively connected to the input terminal a of the first coupling unit 111 and the input terminal a of the second coupling unit 112 in a one-to-one correspondence manner, wherein the switch circuit 150 can be used to selectively couple any radio frequency signal in the middle frequency band to the first coupling unit 111 or the second coupling unit 112, or selectively couple any radio frequency signal in the high frequency band to the first coupling unit 111 or the second coupling unit 112, so that the coupling units 110 can couple any radio frequency signal and correspondingly output a forward coupling signal or a backward coupling signal of any radio frequency signal.
As shown in fig. 13 and 14, in one embodiment, each of the first and second transmitting units 130a and 130b may include a second power amplifier 135, a third rf switch 136, and a plurality of third filtering units 137. The input end of the second power amplifier 135 is connected to the transmission port LB RFIN, and the output end of the second power amplifier 135 is connected to the switch circuit 150 through the third rf switch 136 and the third filtering unit 137. The second power amplifier 135 may amplify the received radio frequency signal of the middle frequency band or the high frequency band, and the third filtering unit 137 may filter the received radio frequency signal of the middle frequency band or the high frequency band. The frequency bands of the rf signals filtered and output by each third filtering unit 137 are different.
The receiving circuit 140 includes a plurality of low noise amplifiers 145, a plurality of fourth rf switches 146, and a plurality of fourth filtering units 147. The output end b of each low noise amplifier 145 is correspondingly connected to a receiving port LNA OUT, the output end b of each low noise amplifier 145 is correspondingly connected to a first end of a fourth rf switch 146, a plurality of second ends of the fourth rf switch 146 are respectively connected to one end of a plurality of fourth filtering units 147 in a one-to-one correspondence manner, and the other end of the fourth filtering unit 147 is connected to the switch circuit 150. The fourth filtering units 147 are respectively configured to filter the received radio frequency signals in the middle frequency band or the high frequency band, and the frequency bands of the radio frequency signals in the middle frequency band or the high frequency band output by each fourth filtering unit 147 are different.
When the number of the coupling units 110 is two, the rf L-PA Mid device provided in the embodiment of the present application can implement dual coupling to rf signals of dual frequency bands (middle frequency band and high frequency band), so as to realize the coupling output of two radio frequency signals of any middle frequency band and any high frequency band, realize the switching of the forward power detection mode and the reverse power detection mode of the two radio frequency signals of any middle frequency band and any high frequency band, also realize the switching and conduction of the coupling path where the coupling input port and the coupling output port are positioned, realize the coupling switching among a plurality of radio frequency signals, reduce the occupied area of the package, meanwhile, the cost is reduced, and meanwhile, the logic control of the coupler module (comprising the coupling unit 110 and the multi-channel selection switch 120) is simplified, thereby being beneficial to reducing the complexity of device control and simultaneously reducing the cost. Meanwhile, by setting the coupling input port CPLIN, the coupler module of the radio frequency L-PA Mid device can be used as a radio frequency feedback channel to output coupling signals output by other devices, so that the routing length of radio frequency can be shortened, the complexity of the layout of a radio frequency transceiving system is reduced, meanwhile, the area of a PCB (printed circuit board) occupied by the radio frequency transceiving system is reduced, and the cost is reduced.
As shown in fig. 15, the embodiment of the present application further provides a radio frequency L-PA Mid device. In one embodiment, the radio frequency L-PA Mid device is configured with a coupling output port CPLOUT, a coupling input port CPLIN, and a plurality of transmit ports MB RFIN, HBRFIN, and a plurality of antenna ports ANT1, ANT 2. The radio frequency L-PA Mid device includes a plurality of coupling units 110 and a switching unit 180. The coupling unit 110 includes an input terminal a, an output terminal b, a first coupling terminal c, and a second coupling terminal d. The input end a is used for receiving radio frequency signals of any frequency band; the output end b is coupled with an antenna port LB ANT and used for outputting radio frequency signals to the antenna port LB ANT; the first coupling end c is used for carrying out forward coupling on the radio frequency signal and outputting a forward coupling signal; the second coupling terminal d is used for performing reverse coupling on the radio frequency signal and outputting a reverse coupling signal.
The first ends of the switch unit 180 are respectively connected to the first coupling end c and the second coupling end d of each coupling unit 110 in a one-to-one correspondence manner, the second ends of the switch circuit 150 are respectively connected to the coupling output port CPLOUT, the coupling input end a, and the ground end in a one-to-one correspondence manner, and the switch unit 180 is configured to selectively transmit the forward coupling signal output by any coupling unit 110 to the coupling output port CPLOUT, and transmit the output reverse coupling signal to the ground end, so as to implement the detection of the forward power of the radio frequency signal, and define the detection mode as a forward power detection mode. Or, the switch unit 180 is configured to selectively transmit the forward coupling signal output by any one of the coupling units 110 to ground, and transmit the output backward coupling signal to the coupling output port CPLOUT, so as to implement detection of backward power of the radio frequency signal, and define the detection mode as a backward power detection mode. That is, the switching unit 180 is used to switch between a forward power detection mode and a reverse power detection mode.
Meanwhile, the switch unit 180 is configured to switch on the coupling paths where the coupling input port CPLIN and the coupling output port CPLOUT are located. That is, the switch unit 180 may select to turn on a coupling channel of the coupling signal generated by the radio frequency L-PA Mid device, that is, turn on a coupling path where the coupling output port CPLOUT is located. The switch unit 180 may also selectively turn on a transmission channel of a coupling signal generated by the external radio frequency L-PA Mid device, so that the external coupling signal may be input through the coupling input port CPLIN and output through the coupling output port CPLOUT, that is, turn on a coupling path where the coupling input port CPLIN is located.
The radio frequency L-PA Mid device comprises a plurality of coupling units 110 and a switch unit 180, and can realize the selection of outputting a forward coupling signal or a backward coupling signal of any radio frequency signal in the plurality of coupling units, realize the coupling switching of radio frequency signals of a plurality of frequency bands, and also realize the switching and conduction of a coupling path where a coupling input port and a coupling output port are located, thereby reducing the packaging occupied area and the cost, simultaneously simplifying the logic control of a coupler module, being beneficial to reducing the complexity of device control and simultaneously reducing the cost. Meanwhile, by setting the coupling input port CPLIN, the coupler module of the radio frequency L-PA Mid device can be used as a radio frequency feedback channel to output coupling signals output by other devices, so that the routing length of radio frequency can be shortened, the complexity of the layout of a radio frequency transceiving system is reduced, meanwhile, the area of a PCB (printed circuit board) occupied by the radio frequency transceiving system is reduced, and the cost is reduced.
Referring to fig. 15, in one embodiment, the number of coupling units 110 is two, and the radio frequency L-PA Mid device is configured with two transmit ports MB RFIN, HB RFIN and two antenna ports ANT1, ANT 2. The input ends a of the two coupling units are respectively coupled with the two transmitting ports MB RFIN and HB RFIN in a one-to-one correspondence manner, and the output ends b of the two coupling units are respectively coupled with the two antenna ports ANT1 and ANT2 in a one-to-one correspondence manner. The radio frequency L-PA Mid device further includes a seventh resistor R7 and an eighth resistor R8, wherein the switch unit 180 includes a first switch 181 and a second switch 182, wherein four first ends of the first switch 181 are respectively connected to the first coupling end c and the second coupling end d of each coupling unit 110 in a one-to-one correspondence manner; a second end of the first switch 181 is grounded via a seventh resistor R7, and the other second end is grounded via an eighth resistor R8, the remaining two second ends of the first switch 181 are respectively connected to the two first ends of the second switch 182 in a one-to-one correspondence, and the two second ends of the second switch 182 are respectively connected to the coupling input port CPLIN and the coupling output port CPLOUT.
Specifically, the first switch 181 may be a 4P4T switch, and the second switch 182 may be a DPDT switch. Taking the coupling unit 111 of the path where the first antenna port ANT1 is located as an example, the operation principle is analyzed as follows:
when the forward power of the radio-frequency signal coupled by the first coupling unit 111 needs to be collected, the contact 7 of the 4P4T switch is switched to the contact 1, the forward power output is turned on, the contact 5 of the 4P4T switch is switched to the contact 2, the seventh resistor R7(50 ohm load) is connected to the ground, the contact 2 of the DPDT switch is switched to the contact 3, and the coupling output port CPLOUT is connected through the radio-frequency line; when reverse power needs to be collected, the contact 7 of the 4P4T switch is switched to the contact 2, and reverse power output is switched on; contact 5 of the 4P4T switch is cut to contact 1, the first coupling end c is connected to ground through an eighth resistor R88(50 ohm load), and contact 2 of the DPDT switch is switched to contact 3 to the coupling output port CPLOUT through the rf line.
In one embodiment, the radio frequency L-PA Mid device is further configured with a plurality of receive ports, the radio frequency L-PA Mid device further comprising a receive circuit, a switch circuit, and a plurality of transmit units. The number of coupling units, transmitting ports and antenna ports is equal. The plurality of transmitting units are respectively connected with the plurality of transmitting ports in a one-to-one correspondence manner, and each transmitting unit is used for amplifying the received radio frequency signals. And the receiving circuit is respectively connected with the plurality of receiving ports and is used for amplifying the received radio frequency signals. And a plurality of first ends of the switch circuit are respectively connected with the transmitting circuit and the receiving circuit in a one-to-one correspondence manner, and a plurality of second ends of the switch circuit are respectively connected with the first input ends a of the plurality of coupling units 110 in a one-to-one correspondence manner, so as to selectively conduct a radio frequency path between each transmitting port LB RFIN and any antenna port LB ANT, that is, a coupling path for selectively conducting a forward coupling signal or a reverse coupling signal corresponding to any radio frequency signal.
As shown in fig. 16, in one embodiment, the number of coupling units is two, which are respectively denoted as a first coupling unit 111 and a second coupling unit 112, the radio frequency L-PA Mid device is configured with two transmit ports (e.g., a first transmit port MB RFIN and a second transmit port HB RFIN) and two antenna ports (e.g., a first antenna port ANT1 and a second antenna port ANT2), and the plurality of transmit units includes the first transmit unit and the second transmit unit. Wherein, the first transmitting port MB RFIN can be understood as an intermediate frequency transmitting port LB RFIN for receiving radio frequency signals of an intermediate frequency band; the second transmission port HB RFIN may be understood as a high frequency transmission port LB RFIN for receiving radio frequency signals of a high frequency band. The plurality of transmitting units includes a first transmitting unit and a second transmitting unit. The first transmitting unit 130a is connected to the intermediate frequency transmitting port LB RFIN, and is configured to amplify and filter the received radio frequency signal of the intermediate frequency band. The radio frequency signals of the middle frequency band may at least include signals of frequency bands of B1, B3, B25, B34, B66, B39, etc. The second transmitting unit is connected with the high-frequency transmitting port LB RFIN and used for amplifying and filtering received high-frequency-band radio-frequency signals. The high band rf signals may include signals in B30, B7, B40, B41, etc.
It should be noted that the first transmitting unit, the second transmitting unit, and the receiving circuit in this embodiment are the same as the radio frequency L-PA Mid device including the two coupling units in the foregoing embodiment, and are not described in detail here.
When the number of the coupling units 110 is two, the radio frequency L-PA Mid device provided in the embodiment of the present application may implement double coupling of radio frequency signals of two frequency bands (a middle frequency band and a high frequency band), so as to implement coupling output of two radio frequency signals of any middle frequency band and any high frequency band, and implement switching between a forward power detection mode and a reverse power detection mode of two radio frequency signals of any middle frequency band and any high frequency band.
In one embodiment, the radio frequency L-PA Mid device in any of the above embodiments further includes a first control unit 150 and a second control unit 160. The first control unit 150 is connected to each switch and the power amplifier, and is configured to control on/off of each switch and control a working state of the power amplifier. The second control unit 160 is connected to each of the low noise amplifiers 145, and is configured to adjust a gain factor of each of the low noise amplifiers 145. The low noise amplifier 145 is an amplifying device with adjustable gain. Illustratively, the low noise amplifier 145 has 8 gain levels.
For example, the first Control unit 150 and the second Control unit 160 may be Mobile Industry Processor Interface (MIPI) -radio frequency Front End Control Interface (RFFE) Control units, and the Control manner of the Control units conforms to the Control protocol of the RFFE bus. When the first control unit 150 and the second control unit 160 are MIPI-RFFE control units, the rf L-PA Mid devices are further configured with an input pin CLK for a clock signal, an input or bidirectional pin SDATAS for a single/bidirectional data signal, a reference voltage pin VIO, and so on.
In one embodiment, each device in the radio frequency L-PA Mid device can be integrated in the same packaged chip. The pin configuration diagram of the packaged chip of the radio frequency L-PA Mid device shown in fig. 7 is shown in fig. 17a, and the packaging diagram of the packaged chip is shown in fig. 17b, which can improve the integration level of each radio frequency L-PA Mid device and reduce the occupied space of the radio frequency L-PA Mid device. As shown in fig. 16, the pin layout of the packaged chip of the rf L-PA Mid device is shown in fig. 18a, and the package of the packaged chip is shown in fig. 18b, which can improve the integration of each rf L-PA Mid device and reduce the occupied space of the rf L-PA Mid device.
In one example, the embodiment of the present application further provides a radio frequency transceiving system. As shown in fig. 19, the rf transceiving system may include two rf L-PA Mid devices 10, an rf transceiver 20 and at least one antenna Ant1 as in any of the above embodiments. The number of the coupling units 110 and the number of the antenna ports in the radio frequency L-PA Mid device 10 are equal, and each antenna port is correspondingly connected to an antenna Ant. For example, when the rf L-PA Mid device 10 is configured with an antenna port, the rf transceiver system may include an antenna Ant1 connected to the antenna port; when the rf L-PA Mid device 10 is configured with two antenna ports, the rf transceiving system may include two antennas ANT2 and ANT3 connected to the two antenna ports ANT1 and ANT2 in a one-to-one correspondence. The coupling input end of one radio frequency L-PA Mid device is connected with the coupling input end of the other radio frequency L-PA Mid device, and the coupling output port of the other radio frequency L-PA Mid device is connected with the radio frequency transceiver.
In the radio frequency transceiving system, the coupling unit 110 and the multi-channel selection switch 120 are arranged in the radio frequency L-PA Mid device 10, so that a forward coupling signal or a backward coupling signal of any radio frequency signal can be selectively output through the coupling output port, and a coupling path where the coupling input port and the coupling output port are located can be switched on, so that coupling switching among a plurality of radio frequency signals is realized, the occupied packaging area is reduced, the cost is reduced, meanwhile, the logic control on the coupler module (comprising the coupling unit 110 and the multi-channel selection switch 120) is simplified, the complexity of device control is favorably reduced, and the cost is reduced. Meanwhile, by setting the coupling input port CPLIN, the coupler module of the radio frequency L-PA Mid device can be used as a radio frequency feedback channel to output coupling signals output by other devices, so that the routing length of radio frequency can be shortened, the complexity of the layout of a radio frequency transceiving system is reduced, meanwhile, the area of a PCB (printed circuit board) occupied by the radio frequency transceiving system is reduced, and the cost is reduced.
In one example, the embodiment of the present application further provides a radio frequency transceiving system. As shown in fig. 20 to 21, the radio frequency transceiving system may include an antenna group 30, a first radio frequency L-PA Mid device 11, a second radio frequency L-PA Mid device 12, a radio frequency transceiver 20, a diversity receiving module 40, a switching module 50, and a combiner module 60.
The antenna group 30 includes a first antenna Ant1, a second antenna Ant2, a third antenna Ant3, and a fourth antenna Ant 4. The first antenna Ant1, the second antenna Ant2, the third antenna Ant3 and the fourth antenna Ant4 are all antennas Ant capable of supporting a 4G band and a 5G NR band. In one embodiment, the first antenna Ant1, the second antenna Ant2, the third antenna Ant3 and the fourth antenna Ant4 may be directional antennas Ant or non-directional antennas Ant. For example, the first antenna Ant1, the second antenna Ant2, the third antenna Ant3, and the fourth antenna Ant4 may be formed using any suitable type of antenna. For example, the first antenna Ant1, the second antenna Ant2, the third antenna Ant3, and the fourth antenna Ant4 may include antennas having resonant elements formed from the following antenna structures: at least one of an array antenna structure, a loop antenna structure, a patch antenna structure, a slot antenna structure, a helical antenna structure, a strip antenna, a monopole antenna, a dipole antenna, and the like. Different types of antennas may be used for frequency band combining of different radio frequency signals.
The first radio frequency L-PA Mid device 11 is configured to support transceiving processing of a radio frequency signal in a low frequency band. The first rf L-PA Mid device 11 may be the rf L-PA Mid device 10 including one coupling unit 110 in any of the embodiments described above. And the second radio frequency L-PA Mid device 12 is used for supporting the transceiving processing of the radio frequency signals of middle and high frequencies. The medium-high frequency radio frequency signal may specifically include a medium-frequency radio frequency signal and a high-frequency radio frequency signal. The first rf L-PA Mid device 11 may be the rf L-PA Mid device 10 in any of the embodiments described above, which includes two coupling units 110. The coupling input end a of the second rf L-PA Mid device 12 is connected to the coupling input end a of the first rf L-PA Mid device 11, and the coupling output end b of the second rf L-PA Mid device 12 is connected to the rf transceiver 20. That is, the forward coupling signal or the backward coupling signal outputted through the coupling output terminal b of the first rf L-PA Mid device 11 can be transmitted to the rf transceiver 20 through the coupling input port and the coupling output port CPLOUT of the second rf L-PA Mid device 12.
The diversity receiving module 40 is configured with a low-frequency antenna port, a medium-high frequency antenna port, and a medium-high frequency transceiving port, and is configured to support diversity receiving and amplifying processing of a plurality of radio frequency signals of a low frequency band, a medium frequency band, and a high frequency band. Specifically, the diversity receiving module 40 integrates a plurality of components such as the low noise amplifier 145, the filter, and the switch. The plurality of radio frequency signals of the low frequency band, the middle frequency band and the high frequency band may at least include signals of frequency bands of B4, B66, B1, B25, B3, B39, B30, B7, B40, B41, B8, B26, B20, B28A, B28B, B12, B17, and the like.
The switch module 50 is connected to the first rf L-PA Mid device 11, the second rf L-PA Mid device 12, and the diversity receiving module 40, respectively. The combiner module 60 is correspondingly connected to the switch module 50, the diversity receiving module 40, the first antenna Ant1, the second antenna Ant2, the third antenna Ant3, and the fourth antenna Ant4, respectively.
Specifically, in one embodiment, the switch module 50 includes: a first switching unit 510, a second switching unit 520, and a third switching unit 530. The combiner module 60 includes a first combiner 610, a second combiner 620, a third combiner 630, and a fourth combiner 640. Wherein, the first end of the first switch unit 510 is connected to the antenna port LB ANT of the first radio frequency L-PA Mid device 11; two first ends of the second switch unit 520 are respectively connected to the first antenna port ANT1 and the second antenna port ANT2 of the second rf L-PA Mid device 12 in a one-to-one correspondence. A first end of the first combiner 610 is connected to a second end of the first switch unit 510, another first end of the first combiner 610 is connected to a second end of the second switch unit 520, and the second end of the first combiner 610 is connected to the first antenna Ant 1; a first end of the second combiner 620 is connected to the other second end of the first switch unit 510 and the low-frequency antenna port LB ANT via the third switch unit 530, respectively, another first end of the second combiner 620 is connected to the medium-high frequency antenna port MHB ANT, and a second end of the second combiner 620 is connected to the second antenna ANT 2; a first end of the third hybrid 630 is connected to a second end of the first switch unit 510, a first end of the third hybrid 630 is connected to a second end of the second switch unit 520, and a second end of the third hybrid 630 is connected to the third antenna Ant 3; a first end of the fourth combiner 640 is connected to a second end of the first switch unit 510, another first end of the fourth combiner 640 is connected to a second end of the second switch unit 520, and a second end of the fourth combiner 640 is connected to the fourth antenna Ant 4; a second end of the second switch unit 520 is connected to the middle-high frequency transceiver port MHB TRX1 of the diversity receiving module 40.
The radio frequency transceiving system in this embodiment may be used to support the 1T4R function of a Sounding Reference Signal (SRS) of a low-frequency and medium-frequency radio frequency Signal.
The second rf L-PA Mid device 12 in the rf transceiving system shown in fig. 20 and fig. 21 can also be used as an rf feedback path, and the coupling signal of the first rf L-PA Mid device 11 can be input from the coupling output port CPLIN of the second rf L-PA Mid device 12. Illustratively, taking fig. 21 as an example for explanation, the specific working principle is as follows:
a coupling signal of the first radio frequency L-PA Mid device 11 is input to a coupling output port CPLIN of the second radio frequency L-PA Mid device 12 through a radio frequency line, contacts 2 and 5 of a 5P5T switch of the second radio frequency L-PA Mid device 12 are respectively switched to contacts 6 and 10 of a 5P5T switch in a one-to-one correspondence manner, and the contacts 6 and 10 are grounded through a third resistor R3 and a sixth resistor R6(50 Ω load); the contacts 3 and 4 of the 5P5T switch are respectively switched to the contacts 7 and 9 of the 5P5T switch in a one-to-one correspondence manner, and the contacts 7 and 9 are respectively grounded through a fourth resistor R4 and a fifth resistor R5(50 Ω load). That is, the external coupling signal can be transmitted to the coupling output port CPLOUT through the contact 1 and the contact 8 of the 5P5T switch via the coupling input port CPLIN, and then transmitted to the feedback port FBRX of the radio frequency transceiver via the radio frequency line connection, so that the routing length of the radio frequency can be shortened, the complexity of the layout of the radio frequency transceiver system can be reduced, the area of the PCB occupied by the radio frequency transceiver system can be reduced, and the cost can be reduced.
Based on the rf transceiving system as shown in fig. 20 and 21, the feedback path of the coupling signal of the rf transceiving system is shown in table 2.
TABLE 2 working paths for coupled signals
In the radio frequency transceiving system, the coupling unit 110 and the multi-channel selection switch 120 are arranged in the radio frequency L-PA Mid device 10, so that a forward coupling signal or a backward coupling signal of any radio frequency signal can be selectively output through the coupling output port, and a coupling path where the coupling input port and the coupling output port are located can be switched on, so that coupling switching among a plurality of radio frequency signals is realized, the occupied packaging area is reduced, the cost is reduced, meanwhile, the logic control on a coupler module is simplified, the complexity of device control is favorably reduced, and the cost is reduced. Meanwhile, by setting the coupling input port CPLIN, the coupler module of the radio frequency L-PA Mid device can be used as a radio frequency feedback channel to output coupling signals output by other devices, so that the routing length of radio frequency can be shortened, the complexity of the layout of a radio frequency transceiving system is reduced, meanwhile, the area of a PCB (printed circuit board) occupied by the radio frequency transceiving system is reduced, and the cost is reduced.
As shown in fig. 22, in one embodiment, the radio frequency transceiving system further includes a first MIMO receiving module 70 and a second MIMO receiving module 80. The switch module may further include a fourth switch unit 540 and a fifth switch unit 550. A first end of the fourth switching unit 540 is connected to another second end of the seventh switching unit 510, another first end of the fourth switching unit 540 is connected to the first MIMO receiving module 70, and a second end of the fourth switching unit 540 is connected to another first end of the third combiner 630; a first end of the fifth switching unit 550 is connected to a second end of the seventh switching unit 510, another first end of the fifth switching unit 550 is connected to the second MIMO receiving module 80, and a second end of the fifth switching unit 550 is connected to another first end of the fourth combiner 640.
The first MIMO receiving module 70 is configured to support a main set receiving and amplifying process for multiple radio frequency signals in medium and high frequency bands. And the second MIMO receiving module 80 is configured to support diversity receiving and amplifying processing on multiple radio frequency signals in medium and high frequency bands. Specifically, the radio frequency signals of the medium-high frequency band may at least include frequency bands B1, B3, B25, B34, B66, B39, B30, B7, B40, B41, and the like.
As shown in fig. 22, the radio frequency transceiving system can support 4 × 4MIMO functions of multiple middle and high frequency signals in addition to the SRS 1T4R functions of the low and middle frequency radio frequency signals, thereby expanding the communication frequency band of the radio frequency system and improving the communication performance of the radio frequency system.
It should be noted that the first radio frequency L-PA Mid device 11 and the second radio frequency L-PA Mid device 12 in fig. 20 to 22 may also be replaced by the radio frequency L-PA Mid devices in any of the above embodiments, and are not limited to the radio frequency L-PA Mid devices of the first radio frequency L-PA Mid device 11 and the second radio frequency L-PA Mid device 12 in fig. 20 to 22.
The embodiment of the application further provides a communication device, the communication device is provided with the radio frequency transceiving system in any one of the above embodiments, by arranging the radio frequency transceiving system on the communication device, the forward coupling signal or the backward coupling signal of any one radio frequency signal can be selectively output through the coupling output port, the coupling path where the coupling input port and the coupling output port are located can be switched on, the coupling switching among a plurality of radio frequency signals is realized, the occupied area of the package is reduced, the cost is reduced, meanwhile, the logic control on the coupler module is simplified, the complexity of device control is favorably reduced, and the cost is reduced. Meanwhile, by setting the coupling input port CPLIN, the coupler module of the radio frequency L-PA Mid device can be used as a radio frequency feedback channel to output coupling signals output by other devices, so that the routing length of radio frequency can be shortened, the complexity of the layout of a radio frequency transceiving system is reduced, meanwhile, the area of a PCB (printed circuit board) occupied by the radio frequency transceiving system is reduced, and the cost is reduced.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (16)
1. A radio frequency L-PA Mid device configured with a coupled output port, a coupled input port, a transmit port, and an antenna port, the radio frequency L-PA Mid device comprising:
a coupling unit, the coupling unit comprising:
the input end is coupled with the transmitting port and used for receiving radio frequency signals;
an output end coupled to the antenna port, configured to output the radio frequency signal to the antenna port;
a first coupling end for outputting a forward coupling signal;
the second coupling end is used for outputting a reverse coupling signal;
the multi-channel selection switch is used for selectively outputting the forward coupling signal or the backward coupling signal through the coupling output port and switching on the coupling path where the coupling input port and the coupling output port are located.
2. The rf L-PA Mid device of claim 1, further comprising a first resistor, wherein the number of the coupling units is one, wherein the multichannel selection switch includes three first terminals and two second terminals, wherein the three first terminals are respectively connected to the first coupling terminal, the second coupling terminal, and the coupling input port in a one-to-one correspondence, one of the second terminals is connected to the coupling output port, and the other of the second terminals is grounded via the first resistor.
3. The rf L-PA Mid device of claim 2, further comprising a second resistor, wherein the multichannel selection switch comprises three second terminals, and wherein one of the second terminals is connected to ground via the second resistor.
4. The rf L-PA Mid device according to claim 1, wherein the number of the coupling units is two, the input ends of the two coupling units are respectively coupled to the two transmitting ports in a one-to-one correspondence manner, and the output ends of the two coupling units are respectively coupled to the two antenna ports in a one-to-one correspondence manner, wherein the rf L-PA Mid device further includes a third resistor and a fourth resistor, the multi-channel selection switch includes five first ends and three second ends, the five first ends are respectively coupled to the coupling input port, the first coupling end and the second coupling end of each coupling unit in a one-to-one correspondence manner, one of the second ends is connected to the coupling output port, the other of the second ends is grounded through the third resistor, and the other of the second ends is grounded through the fourth resistor.
5. The RF L-PA Mid device of claim 4, further comprising a fifth resistor and a sixth resistor, wherein the multi-channel select switch comprises five second terminals, and wherein another of the second terminals is coupled to ground via the fifth resistor and another of the second terminals is coupled to ground via the sixth resistor.
6. The radio frequency L-PA Mid device according to claim 1, further configured with a receive port, the radio frequency L-PA Mid device further comprising:
the transmitting circuit is connected with the transmitting port and used for amplifying the radio-frequency signal received by the transmitting port;
the receiving circuit is respectively connected with the receiving ports and is used for amplifying the radio frequency signals received by the antenna ports;
and a plurality of first ends of the switch circuit are respectively connected with the transmitting circuit and the receiving circuit in a one-to-one correspondence manner, and each second end of the switch circuit is respectively connected with the first input end of each coupling unit in a corresponding coupling manner and is used for selectively conducting a radio frequency path between the transmitting port and any antenna port.
7. The radio frequency L-PA Mid device of claim 6, wherein the number of the transmitting ports, the number of the antenna ports, and the number of the coupling units are all one, the transmitting circuit is configured to amplify a received radio frequency signal in a low frequency band, and an input end of the coupling unit is coupled to the second end of the switching circuit to couple any one of the radio frequency signals.
8. The radio frequency L-PA Mid device of claim 6, wherein the number of the transmission ports, antenna ports, and coupling units is two, and the transmission circuit comprises:
the first transmitting unit is used for amplifying the received radio frequency signal of the middle frequency band;
the second transmitting unit is used for amplifying the received radio frequency signal of the high frequency band;
the input ends of the two coupling units are respectively coupled with the two second ends of the switch circuit in a one-to-one correspondence manner so as to couple any one radio frequency signal.
9. A radio frequency L-PA Mid device configured with a coupled output port, a coupled input port, a plurality of transmit ports, and a plurality of antenna ports, the radio frequency L-PA Mid device comprising:
a plurality of coupling units, the coupling units comprising:
the input end is connected with one transmitting port and used for receiving radio frequency signals of any frequency band;
the output end is coupled with one antenna port and used for outputting the radio frequency signal to the antenna port;
a first coupling end for outputting a forward coupling signal;
the second coupling end is used for outputting a reverse coupling signal;
the switch unit, a plurality of first ends of switch unit respectively with each coupling unit's first coupling end, second coupling end one-to-one connection, a plurality of second ends of switch unit respectively with coupling output port, coupling input end, ground end one-to-one connection, the switch unit is used for selectively with forward coupling signal or backward coupling signal pass through coupling output port exports, still is used for switching on coupling route that coupling input port, coupling output port are located.
10. The radio frequency L-PA Mid device of claim 9, wherein the number of the coupling units, the number of the transmitting ends, and the number of the antenna ports are two; the input ends of the two coupling units are respectively coupled with the two transmitting ports in a one-to-one corresponding manner, and the output ends of the two coupling units are respectively coupled with the two antenna ports in a one-to-one corresponding manner; the radio frequency L-PA Mid device further comprises a seventh resistor and an eighth resistor, the switch unit comprises a first switch and a second switch, and four first ends of the first switch are respectively coupled and connected with the first coupling end and the second coupling end of each coupling unit in a one-to-one correspondence manner; a second end of the first switch is grounded through the seventh resistor, the other second end of the first switch is grounded through the eighth resistor, the remaining two second ends of the first switch are respectively connected with the two first ends of the second switch in a one-to-one correspondence manner, and the two second ends of the second switch are respectively connected with the coupling input port and the coupling output port.
11. The radio frequency L-PA Mid device according to claim 9, further configured with a plurality of receive ports, the radio frequency L-PA Mid device further comprising:
the transmitting units are respectively connected with the transmitting ports in a one-to-one correspondence manner, and each transmitting unit is used for amplifying the received radio frequency signals;
the receiving circuit is respectively connected with the plurality of receiving ports and is used for amplifying the received radio frequency signals;
and a plurality of first ends of the switch circuit are respectively connected with the transmitting units and the receiving circuit in a one-to-one correspondence manner, and a plurality of second ends of the switch circuit are respectively connected with the first input end of each coupling unit in a corresponding coupling manner and are used for selectively conducting the radio frequency path between each transmitting port and any antenna port.
12. The radio frequency L-PA Mid device of claim 11, wherein the number of the coupling units, transmit ports, and antenna ports is two, and two of the transmit units comprise:
the first transmitting unit is connected with one transmitting port and used for amplifying the received radio frequency signal of the middle frequency band;
the second transmitting unit is connected with the other transmitting port and is used for amplifying the received radio-frequency signal of the high frequency band; wherein,
the input ends of the two coupling units are respectively coupled with the two second ends of the switch circuit in a one-to-one correspondence manner so as to couple any one radio frequency signal.
13. A radio frequency transceiver system, comprising:
two radio frequency L-PA Mid devices according to any of claims 1-12, wherein a coupling input of one of the radio frequency L-PA Mid devices is connected to a coupling input of the other radio frequency L-PA Mid device,
the radio frequency transceiver is connected with a coupling output port of the other radio frequency L-PA Mid device;
and the antenna group comprises at least two antennas, and each antenna is correspondingly connected with an antenna port of the radio frequency L-PA Mid device.
14. A radio frequency transceiver system, comprising:
an antenna group comprising a first antenna, a second antenna, a third antenna and a fourth antenna;
the radio frequency L-PA Mid device of claim 2, 3, or 6, which is denoted as a first radio frequency L-PA Mid device, and is configured to support transceiving processing of radio frequency signals in a low frequency band;
the radio frequency L-PA Mid device of any of claims 4-6, or the radio frequency L-PA Mid device of any of claims 9-12, denoted as a second radio frequency L-PA Mid device, wherein a coupling input of the second radio frequency L-PA Mid device is connected to a coupling input of the first radio frequency L-PA Mid device; the first radio frequency L-PA Mid device is used for supporting the transceiving processing of a plurality of radio frequency signals of middle and high frequencies;
the radio frequency transceiver is connected with the coupling output end of the second radio frequency L-PA Mid device;
the diversity receiving module is provided with a low-frequency antenna port, a medium-high frequency antenna port and a medium-high frequency transceiving port and is used for supporting diversity receiving amplification processing of a plurality of radio frequency signals of a low frequency band, a medium frequency band and a high frequency band;
the switch module is respectively connected with the first radio frequency L-PA Mid device, the second radio frequency L-PA Mid device and the diversity receiving module;
the combiner module is correspondingly connected with the switch module, the diversity receiving module, the first antenna, the second antenna, the third antenna and the fourth antenna respectively;
the radio frequency transceiving system is used for supporting the 1T4R function of the channel sounding reference signal of a plurality of radio frequency signals of a low frequency band and a medium frequency band.
15. The radio frequency transceiver system of claim 14, further comprising:
the first MIMO receiving module is used for supporting the main set receiving and amplifying processing of a plurality of radio frequency signals of a middle frequency band and a high frequency band;
the second MIMO receiving module is used for supporting diversity receiving and amplifying processing of a plurality of radio frequency signals of a middle frequency band and a high frequency band; wherein,
the first MIMO receiving module and the first MIMO receiving module are respectively connected with the combiner module through the switch module;
the radio frequency transceiving system is used for realizing 4 x 4MIMO function of a plurality of radio frequency signals of a middle frequency band and a high frequency band.
16. A communication device, comprising:
a radio frequency transceiver system as claimed in any one of claims 13 to 15.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115133951A (en) * | 2022-07-28 | 2022-09-30 | Oppo广东移动通信有限公司 | Radio frequency system and electronic equipment |
| WO2024139549A1 (en) * | 2022-12-30 | 2024-07-04 | 广州慧智微电子股份有限公司 | Power coupler circuit and power transmitting device |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115133951A (en) * | 2022-07-28 | 2022-09-30 | Oppo广东移动通信有限公司 | Radio frequency system and electronic equipment |
| WO2024139549A1 (en) * | 2022-12-30 | 2024-07-04 | 广州慧智微电子股份有限公司 | Power coupler circuit and power transmitting device |
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