CN115733509A - Radio frequency front-end module circuit, antenna phased array transceiving system and signal processing method - Google Patents
Radio frequency front-end module circuit, antenna phased array transceiving system and signal processing method Download PDFInfo
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Abstract
The invention is suitable for the technical field of communication, and discloses a radio frequency front end module circuit, an antenna phased array transceiving system and a signal processing method, wherein the radio frequency front end module circuit comprises: switches, bi-directional amplifiers and filters; the movable end of the switch is connected with the receiving link and the transmitting link; one end of the bidirectional amplifier is connected with the fixed end of the switch, the other end of the bidirectional amplifier is connected with one end of the filter, and the other end of the filter is connected with the external antenna; the switch is used for controlling access to the receiving link or the transmitting link so as to enable the receiving link or the transmitting link to be conducted; and the bidirectional amplifier is used for carrying out power amplification processing on the signals of the receiving link or the transmitting link based on the control of the switch.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a radio frequency front-end module circuit, an antenna phased array transceiving system and a signal processing method.
Background
The traditional single-antenna radio frequency integrated transceiver system is mainly divided into four parts, namely an antenna, a radio frequency front-end module, an analog transceiver module and a baseband signal processor. The radio frequency front end module is a key technology for wireless connection of a radio frequency integrated transceiver chip system and is a core component which is positioned between an antenna and an analog transceiver module and used for realizing signal transmission and reception. Typically including an off-chip antenna, an off-chip transmit-receive switch, and radio frequency transmitter and receiver channels. The radio frequency receiving channel comprises a low noise amplifier and a receiving filter; the radio frequency transmit channel includes a wideband power amplifier and a transmit filter. The scheme divides the radio frequency transmitting channel and the receiving channel into two independent signal paths, although the mutual interference of the transmitting channel and the receiving channel can be reduced, the complexity of system design is increased, and the chip area is larger, the power consumption is larger, and the integration level is lower. Therefore, the multi-unit antenna phased array transceiving system formed by the single antenna basic units has a complex design process and high hardware cost.
Disclosure of Invention
In order to solve the existing technical problems, embodiments of the present invention provide a radio frequency front end module circuit, an antenna phased array transceiving system, and a signal processing method.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a radio frequency front end module circuit, where the circuit includes: switches, bi-directional amplifiers and filters; the movable end of the switch is connected with the receiving link and the transmitting link; one end of the bidirectional amplifier is connected with the fixed end of the switch, the other end of the bidirectional amplifier is connected with one end of the filter, and the other end of the filter is connected with the external antenna;
the switch is used for controlling access to the receiving link or the transmitting link so as to conduct the receiving link or the transmitting link;
and the bidirectional amplifier is used for carrying out power amplification processing on the signals of the receiving link or the transmitting link based on the control of the switch.
In the above circuit, when the switch is used to control access to the transmission link, the bidirectional amplifier is used to perform power amplification processing on a signal of the transmission link.
In the above circuit, when the switch is used to control access to the receiving link, the bidirectional amplifier is used to perform power amplification processing on a signal of the receiving link.
In a second aspect, an embodiment of the present invention further provides an antenna phased array transceiving system, where the system includes: an analog transceiver module, the rf front-end module circuit according to the first aspect, and an off-chip antenna, wherein a moving end of a switch in the rf front-end module circuit is connected to the analog transceiver module, and another end of a filter in the rf front-end module circuit is connected to the off-chip antenna; the analog transceiver module at least comprises a receiving link and a transmitting link;
the radio frequency front end module circuit is used for controlling the receiving link or the sending link accessed into the analog transceiving module and carrying out power amplification processing on signals of the receiving link or the sending link;
the off-chip antenna is used for transmitting signals after power amplification processing is carried out on the radio frequency front-end module circuit, or transmitting signals to the radio frequency front-end module circuit.
In the above system, the number of the analog transceiver modules and the off-chip antennas is the same as the number of the rf front-end module circuits, where the number is 2 to the power of N, and N is an integer not greater than 6.
In the system, the receiving link is used for demodulating, filtering and performing analog-to-digital conversion on a received signal;
the transmission link is used for performing analog-to-digital conversion, filtering and modulation processing on a signal to be transmitted.
In the system, the radio frequency front end module circuit further includes a first radio frequency phase shifter, an input end of the first radio frequency phase shifter is connected with a moving end of the switch, and an output end of the first radio frequency phase shifter is connected with the bidirectional amplifier.
In the above system, the receiving link and the transmitting link respectively include a frequency synthesizer end;
the frequency synthesizer end in the receiving chain and the transmitting chain comprises: the local oscillator, the second radio frequency phase shifter, the buffer and the phase shifter; wherein,
one end of the second radio frequency phase shifter is connected with the output end of the local oscillator, the other end of the second radio frequency phase shifter is connected with the input end of the buffer, and the output end of the buffer is connected with the input end of the phase shifter.
In the above system, the receiving link and the transmitting link further include a first signal end and a second signal end, respectively; the first signal end and the second signal end both comprise mixers, output ends of the phase shifters in the receiving chain and the sending chain are respectively connected with the mixers in the first signal end and the second signal end, and output ends of the mixers are connected with a movable end of the switch.
In a third aspect, an embodiment of the present invention further provides a signal processing method, where the method is applied to the radio frequency front end module circuit according to the foregoing first aspect; the method comprises the following steps:
the control switch is connected to a receiving link or a transmitting link so as to enable the receiving link or the transmitting link to be conducted;
and performing power amplification processing on the signals of the receiving link or the transmitting link based on the control of the switch.
In the above method, the performing power amplification processing on the signal of the receiving link or the transmitting link based on the control of the switch includes:
when the switch is controlled to be accessed to the transmitting link, the signal of the transmitting link is subjected to power amplification processing;
and when the switch is controlled to be accessed to the receiving link, performing power amplification processing on the signal of the receiving link.
The radio frequency front end module circuit provided by the embodiment of the invention comprises: switches, bi-directional amplifiers and filters; the movable end of the switch is connected with the receiving link and the transmitting link; one end of the bidirectional amplifier is connected with the fixed end of the switch, the other end of the bidirectional amplifier is connected with one end of the filter, and the other end of the filter is connected with the external antenna; the switch is used for controlling the access of the receiving link or the transmitting link so as to conduct the receiving link or the transmitting link; and the bidirectional amplifier is used for carrying out power amplification processing on the signals of the receiving link or the transmitting link based on the control of the switch.
The embodiment of the invention adopts the bidirectional amplifier, the functional modules of the transmitter channel and the receiver channel at the radio frequency front end are simplified, and the power amplifier and the low noise amplifier are combined into a whole, so that the design efficiency is greatly improved, and the power consumption is also reduced. The transmit-receive switch is positioned back away from the antenna so that it is positioned between the bi-directional amplifier and the transmit-receive mixer. Compared with the traditional architecture which is positioned at the output end of the power amplifier of the transmitter and the input end of the low noise amplifier of the receiver, the design requirements on linearity and low noise are greatly reduced, the traditional scheme of a separating device is broken through, and the integration to the radio frequency front end is facilitated. The filter position of the receiver replaces the filter position of the transmitter, and meanwhile, filtering is provided for double channels, so that the filtering function of the receiver is guaranteed, the condition that the low-impedance antenna is directly connected with the output end of the power amplifier is avoided, and high output impedance matching and high output power of the power amplifier are guaranteed.
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 embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic circuit diagram of an RF front-end module according to an embodiment of the present invention;
FIG. 2a is a schematic diagram of a bidirectional amplifier according to an embodiment of the present invention;
FIG. 2b is a schematic diagram of a power amplifier mode of a bi-directional amplifier according to an embodiment of the present invention;
FIG. 2c is a schematic diagram of a low noise amplifier mode of a bi-directional amplifier according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an antenna phased array transceiving system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a four-element antenna phased array transceiving system according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a rf front-end phased-modulated antenna phased-array transceiving system according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a frequency synthesizer phase modulation antenna phased array transceiving system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In this embodiment, a radio frequency front end module circuit is proposed, fig. 1 is a schematic diagram of a radio frequency front end module circuit according to an embodiment of the present invention, and fig. 2a is a schematic structural diagram of a bidirectional amplifier according to an embodiment of the present invention; fig. 3 is a schematic diagram of an antenna phased array transceiving system according to an embodiment of the present invention; as will be illustrated below with reference to fig. 1, 2a and 3, the circuit 101 comprises: a switch 1011, a bidirectional amplifier 1012, and a filter 1013; the movable end of the switch 1011 is connected with a receiving link 1032 and a transmitting link 1031; one end of the bidirectional amplifier 1012 is connected to the stationary end of the switch 1011, the other end of the bidirectional amplifier 1012 is connected to one end of the filter 1013, and the other end of the filter 1013 is connected to the external antenna 102;
the switch 1011 is configured to control access to the receiving link 1032 or the transmitting link 1031, so as to turn on the receiving link 1032 or the transmitting link 1031;
the bidirectional amplifier 1012 is configured to perform power amplification processing on a signal of the receiving link 1032 or the transmitting link 1031 based on the control of the switch 1011.
It should be noted that the rf front-end module circuit 101 provided in this embodiment may be applied to a base station in a communication network.
In this embodiment, the switch 1011 may be any type of switch, and is not limited herein. As an example, the switch 1011 may be a single-pole double-throw switch, the switch 1011 being composed of a movable end and a stationary end, the movable end being a so-called "pole", and generally also being the end connected to the handle of the switch; the other two ends are so-called stationary ends, which are connected to devices for receiving or transmitting signals. The signal can be controlled to output or receive signals in two different directions. In this embodiment, the switch may switch on the transmission link 1031 or the reception link 1032 as needed to perform the transceiving switching. For example, the switch 1011 of the embodiment of the present application may be a signal controlled by an electrical signal or other physical form to connect the transmitting link 1031 or the receiving link 1032.
The filter 1013 may be a device that effectively filters a frequency point of a specific frequency in the power line or frequencies other than the frequency point to obtain an electrical signal of the specific frequency, or eliminates the electrical signal of the specific frequency. As an example, the filter 1013 may be a band-pass filter that retains signals within a specific frequency band and filters out signals outside the specific frequency band. One end of the filter 1013 is connected to one end of the bidirectional amplifier 1012, and the other end of the filter 1013 is connected to the off-chip antenna 102.
The bidirectional amplifier 1012 has a configuration as shown in fig. 2a, in which a power amplifier and a low noise amplifier are integrated, and is located between the switch 1011 and the filter 1013, one end of the bidirectional amplifier is connected to the stationary end of the switch 1011, and the other end of the bidirectional amplifier is connected to one end of the filter 1013. In fig. 2a, M1 to M8 are all Metal Oxide Semiconductor Field Effect Transistors (MOSFETs), which are abbreviated as MOS transistors. According to different requirements of a Power Amplifier (PA) or a Low Noise Amplifier (LNA), different modes are selected, and fig. 2b is a schematic power Amplifier mode diagram of the bidirectional Amplifier according to the embodiment of the present invention; when the switch 1011 turns on the transmission link 1031, the bidirectional amplifier 1012 operates in the power amplifier Mode, as shown in fig. 2b, when in the PA Mode (PA Mode), M1 and M2 are turned on, signals received by the antenna are amplified by the antenna terminals (Ri +, ri-) through M3 and M4, M5, M6, M7 and M8 are simultaneously turned off, and the signals are output to the ports (Ti +, ti-) of the next stage of circuits (filters, mixers, etc.) of the PA; when the switch turns on the receiving link 1032, the bidirectional amplifier 1012 operates in a low noise amplifier mode, and fig. 2c is a schematic diagram of the low noise amplifier mode of the bidirectional amplifier according to the embodiment of the present invention; when operating in the LNA Mode (LNA Mode), as shown in fig. 2c, M7, M8 are turned on, the signal is amplified via input terminals (Ri +, ri-) via M5 and M6, while M1, M2, M3 and M4 are turned off, and the amplified signal is output to the load antenna terminals (Ti +, ti-).
The bidirectional amplifier provided by the embodiment of the invention adopts a cascode structure, so that the gain of a signal can be obviously improved, and under the PA working mode, due to the isolation action of M7 and M8, the leakage current is obviously reduced, so that the output current is greatly increased, and the power gain can be increased from 12dB to more than 21 dB. Due to the effect of the second-stage common-gate power amplification tube of the common-gate structure, the directional isolation of the bidirectional PA/LNA is further enhanced, and the noise coefficient of the receiver is further reduced. The LNA mode does not change the current output polarity direction any more, but from Ri + to Ti + as in the PA mode, which is beneficial to the consistency and efficiency of the system module design. And meanwhile, a neutralization capacitor is additionally added, so that the bandwidth is improved.
The rf module circuit 101 in the embodiment of the present invention may be integrated on one chip, and implemented by one chip. And with the bidirectional amplifier 1012, the functional modules of the transmitter channel and the receiver channel of the radio frequency front end are simplified, the power amplifier and the low noise amplifier are combined into a whole, the circuit module can be multiplexed, the chip area of the radio frequency front end module is minimized, the manufacturing cost is saved, meanwhile, the design efficiency is greatly improved, and the power consumption is also reduced. The transmit/receive switch 1011 is positioned back away from the off-chip antenna 102 so that it is between the bi-directional amplifier 1012 and the transmit/receive mixer. Compared with the traditional architecture which is positioned at the output end of the power amplifier of the transmitter and the input end of the low noise amplifier of the receiver, the design requirements on linearity and low noise are greatly reduced, so that the traditional scheme of a separating device is broken through, and the integration to the radio frequency front end is facilitated. The filter position of the receiver replaces the filter position of the transmitter, and meanwhile, filtering is provided for double channels, so that the filtering function of the receiver is guaranteed, the direct connection of the low-impedance antenna with the output end of the power amplifier is avoided, and the high output impedance matching and the high output power of the power amplifier are guaranteed.
In some optional embodiments of the present invention, when the switch 1011 is configured to control access to the transmission link 1031, the bidirectional amplifier 1012 is configured to perform power amplification processing on a signal of the transmission link 1031.
In other optional embodiments of the present invention, when the switch 1011 is used to control access to the receiving link 1032, the bidirectional amplifier 1012 is used to perform power amplification processing on a signal of the receiving link 1032.
Based on the radio frequency front end module circuit, the embodiment of the invention also provides an antenna phased array transceiving system. Fig. 3 is a schematic diagram of an antenna phased array transceiving system according to an embodiment of the present invention; as shown in fig. 3, the system includes: the antenna comprises an analog transceiver module 103, a radio frequency front end module circuit 101 and an off-chip antenna 102, wherein the moving end of a switch 1011 in the radio frequency front end module circuit 101 is connected with the analog transceiver module 103, and the other end of a filter 1013 in the radio frequency front end module circuit is connected with the off-chip antenna 102; wherein the analog transceiver module at least comprises a receiving link 1032 and a transmitting link 1031;
the radio frequency front end module circuit 103 is configured to control the receiving link 1032 or the sending link 1031 accessed to the analog transceiver module, and perform power amplification processing on a signal of the receiving link or the sending link;
the off-chip antenna 102 is configured to transmit a signal after power amplification processing is performed by the rf front-end module circuit, or transmit a signal to the rf front-end module circuit.
In the embodiment of the present invention, the Analog transceiver module 103 may adopt a system architecture of an intermediate frequency receiver, including Digital-to-Analog Converter (DAC), analog-to-Digital Converter (ADC), anti-aliasing filter, local oscillator, I/Q modulator and demodulator.
The analog transceiver module 103 comprises at least a receiving link 1032 and a transmitting link 1031. For the receiving link 1032, the rf high frequency signal is reduced to baseband frequency band by I/Q demodulator and filter, and then is processed to baseband after ADC sampling. For a transmission link, a baseband digital signal is modulated to a radio frequency band through DAC digital-to-analog conversion, anti-aliasing filter and I/Q modulation, and is transmitted to the radio frequency front-end module circuit 101 and then transmitted through the off-chip antenna 102.
The radio frequency front end module circuit 101, consistent with the foregoing embodiment, is not described herein again, and is configured to control the receiving link 1032 or the transmitting link 1031 accessed to the analog transceiver module 103, and perform power amplification processing on signals of the receiving link 1032 or the transmitting link 1031;
the off-chip antenna 102 is consistent with the foregoing embodiments, and is not described herein again, and the category of the off-chip antenna 102 is not limited herein, and is used for transmitting a signal after power amplification processing is performed by the rf front-end module circuit 101, or transmitting a signal to the rf front-end module circuit 101 in this embodiment.
In the embodiment of the invention, the functional modules of the transmitting channel and the receiving channel of the radio frequency front-end module circuit 101 are simplified, and the power amplifier and the low-noise amplifier are combined into a whole, so that the design efficiency is greatly improved, and the power consumption is also reduced. The transmit/receive switch 1011 is positioned back away from the antenna 102 so that it is between the bi-directional amplifier and the transmit/receive mixer. Compared with the traditional architecture which is positioned at the output end of the power amplifier of the transmitter and the input end of the low noise amplifier of the receiver, the design requirements on linearity and low noise are greatly reduced, so that the traditional scheme of a separating device is broken through, and the integration to the radio frequency front end is facilitated. The filter position of the receiver replaces the filter position of the transmitter, and meanwhile, filtering is provided for double channels, so that the filtering function of the receiver is guaranteed, the direct connection of the low-impedance antenna with the output end of the power amplifier is avoided, and the high output impedance matching and the high output power of the power amplifier are guaranteed.
In some optional embodiments of the present invention, the number of the analog transceiver modules 101, the off-chip antennas 102 and the number of the rf front-end module circuits 103 are the same, where the number is N times of 2, and N is an integer not greater than 6.
In this embodiment, the number of the analog transceiver modules 101, the number of the off-chip antennas 102, and the number of the rf front-end module circuits 103 are the same. The number of 1 analog transceiver module 101, 1 off- chip antenna 102, and 1 rf front-end module circuit 103 constitute 1 antenna unit. Fig. 4 is a schematic diagram of a four-element antenna phased array transceiving system according to an embodiment of the present invention; as shown in fig. 4, the four-unit antenna phased array transceiver system is composed of four analog transceiver modules 101, four off-chip antennas 102, and four rf front-end module circuits 103. The number of the antenna units can be set according to an actual use scene, the number is the power of N of 2, and the value of N is an integer not greater than 6.
The antenna phased array transceiving system of this embodiment may be applied to a Multiple Input Multiple Output (MIMO) system, where Multiple antennas are used at both a transmitting end and a receiving end, the number is 2 to the power of N, and a value of N is an integer not greater than 6. An antenna system for forming a plurality of channels between transmission and reception can greatly improve channel capacity.
In some optional embodiments of the present invention, as shown in fig. 3, the receiving link 1032 is configured to demodulate, filter, and perform analog-to-digital conversion on the received signal;
the transmission link 1031 is configured to perform analog-to-digital conversion, filtering, and modulation on a signal to be transmitted.
In this embodiment, the receiving link reduces the rf high-frequency signal to the baseband frequency band through the I/Q demodulator and the filter, and performs signal processing on the rf high-frequency signal sampled to the baseband by the ADC. And the transmitting link 1031 modulates the baseband digital signal to a radio frequency band through DAC digital-to-analog conversion, anti-aliasing filter and I/Q modulation, sends the radio frequency band to the radio frequency front-end module circuit 101, and transmits the radio frequency band through the off-chip antenna 102.
In other alternative embodiments of the present invention, fig. 5 is a schematic diagram of a phase modulation antenna phased array transceiving system for rf front end according to an embodiment of the present invention; as shown in fig. 5, the rf front-end module circuit 103 further includes a first rf phase shifter 1014, an input end of the first rf phase shifter 1014 is connected to the moving end of the switch 1011, and an output end of the first rf phase shifter 1014 is connected to the bidirectional amplifier 1012.
In this embodiment, the rf phase modulation of the antenna phased array transceiver system may be implemented by rf front-end phase modulation, and for the antenna phased array transceiver system implemented by rf front-end phase modulation, only one first rf phase shifter 1014 is added to the rf front-end bidirectional transceiver channel, and is located at the input end of the bidirectional amplifier and the output end of the transceiver switch 1011.
The phase shifter 1014 may be any phase shifter, which is not limited herein, and mainly functions to adjust the phase shift of the signal by a certain angle according to an actual usage scenario.
In the embodiment of the present invention, the transceiver channel function modules of the rf front end are simplified, the number of the first rf phase shifter 1014 needs to be reduced from the previous receiving channel and sending channel to one in this embodiment, and the first rf phase shifter 1014 considers the phase modulation of the transmitter and the receiver, and only needs to be designed once compared with the conventional architecture, which is beneficial to shortening the design time, reducing the power consumption, and simultaneously, is more beneficial to system integration and reducing the chip area.
In some alternative embodiments of the present invention, fig. 6 is a schematic diagram of a frequency synthesizer phase modulation antenna phased array transceiving system according to an embodiment of the present invention; as shown in fig. 6, the receiving link 1032 and the transmitting link 1031 respectively include a frequency synthesizer end;
the frequency synthesizer side in the receiving link 1032 and the transmitting link 1031 each include: a local resonator 10321, a second radio frequency phase shifter 10322, a buffer 10323, and a phase shifter 10324; wherein,
one end of the second rf phase shifter 10322 is connected to the output end of the local oscillator 10321, the other end of the second rf phase shifter is connected to the input end of the buffer 10323, and the output end of the buffer 10323 is connected to the input end of the phase shifter 10324.
In this embodiment, a frequency synthesizer phase modulation antenna phased array transceiver system is adopted, as shown in fig. 6, a radio frequency front end bidirectional transceiver channel does not need to be changed, and only one phase shifter 10322 is added to each of the frequency synthesizers of the single antenna transmit chain 1031 and the single antenna receive chain 1032, that is, the phase shifters are respectively located at an output end of a Local Oscillator (LO) 10321 and an input end of a buffer (buffer) 10323. For the phase shifter system, as the radio frequency signal path does not flow through the phase shifter, the frequency synthesizer end can realize the approximate zero gain change, thereby reducing the influence on the gain change of the system and reducing the complexity, power consumption and cost of the system design. Because the phase shifter works at the frequency synthesizer end, a radio frequency signal path does not flow through the phase shifter, and therefore the frequency synthesizer end does not need to achieve broadband response, and phase errors can be reduced.
In other optional embodiments of the present invention, the receiving link 1032 and the transmitting link 1031 further include a first signal terminal and a second signal terminal, respectively; the first signal end and the second signal end both include mixers, output ends of the phase shifters in the receiving chain and the transmitting chain are respectively connected with the mixers in the first signal end and the second signal end, and output ends of the mixers are connected with a movable end of the switch 1011.
In this embodiment of the present invention, as shown in fig. 6, the first signal end and the second signal end of the receiving link 1032 sequentially include, from left to right: a DAC, a filter, a Variable Gain Amplifier (VGA), and a mixer; the first signal end and the second signal end of the transmission link 1031 both sequentially include from left to right: ADC, filter, VGA and mixer.
Based on the foregoing embodiment, an embodiment of the present invention further provides a signal processing method, where the method is applied to a radio frequency front end module circuit; the method comprises the following steps:
the control switch is connected to a receiving link or a transmitting link so as to enable the receiving link or the transmitting link to be conducted;
and performing power amplification processing on the signals of the receiving link or the transmitting link based on the control of the switch.
In this embodiment, the control switch may control access to the receiving link or the transmitting link according to an actual usage scenario, so that the receiving link or the transmitting link is turned on; so as to perform power amplification processing on the signals of the receiving link or the transmitting link.
In some optional embodiments of the present invention, the performing, based on the controlling of the switch, power amplification processing on the signal of the receiving link or the transmitting link includes:
when the switch is controlled to be accessed to the transmitting link, the signal of the transmitting link is subjected to power amplification processing;
and when the switch is controlled to be connected to the receiving link, performing power amplification processing on the signal of the receiving link.
In this embodiment, when the switch is controlled to access the transmission link, power amplification processing is performed on a signal of the transmission link; and when the switch is controlled to be connected to the receiving link, performing power amplification processing on the signal of the receiving link.
It should be noted that the information processing method provided in the foregoing embodiment and the embodiments of the radio frequency front end module circuit or the antenna phased array transceiver system belong to the same concept, and corresponding processing procedures may be executed based on different constituent structures of the radio frequency front end module circuit or the antenna phased array transceiver system. The specific implementation process is detailed in the embodiment of the radio frequency front-end module circuit or the antenna phased array transceiving system.
The methods disclosed in the several method embodiments provided in the present application may be combined arbitrarily without conflict to arrive at new method embodiments.
Features disclosed in several of the product embodiments provided in the present application may be combined in any combination to yield new product embodiments without conflict.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described device embodiments are merely illustrative, for example, the division of the unit is only one logical function division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or in other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit may be implemented in the form of hardware, or in the form of hardware plus a software functional unit.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (11)
1. A radio frequency front end module circuit, the circuit comprising: switches, bi-directional amplifiers and filters; the movable end of the switch is connected with the receiving link and the transmitting link; one end of the bidirectional amplifier is connected with the fixed end of the switch, the other end of the bidirectional amplifier is connected with one end of the filter, and the other end of the filter is connected with the external antenna;
the switch is used for controlling access to the receiving link or the transmitting link so as to enable the receiving link or the transmitting link to be conducted;
and the bidirectional amplifier is used for carrying out power amplification processing on the signals of the receiving link or the transmitting link based on the control of the switch.
2. The circuit of claim 1, wherein the bi-directional amplifier is configured to power amplify the signal of the transmit chain when the switch is configured to control access to the transmit chain.
3. The circuit of claim 1, wherein the bi-directional amplifier is configured to power amplify the signal of the receive chain when the switch is configured to control access to the receive chain.
4. An antenna phased array transceiver system, the system comprising: an analog transceiver module, the rf front-end module circuit according to any one of claims 1 to 3, and an off-chip antenna, wherein a moving terminal of a switch in the rf front-end module circuit is connected to the analog transceiver module, and another terminal of a filter in the rf front-end module circuit is connected to the off-chip antenna; the analog transceiver module at least comprises a receiving link and a transmitting link;
the radio frequency front end module circuit is used for controlling the receiving link or the sending link accessed into the analog transceiving module and carrying out power amplification processing on signals of the receiving link or the sending link;
the off-chip antenna is used for transmitting signals after power amplification processing is carried out on the radio frequency front end module circuit, or transmitting signals to the radio frequency front end module circuit.
5. The system of claim 4, wherein the number of the analog transceiver modules, the off-chip antennas and the rf front-end module circuits is the same, the number is a power N of 2, and N is an integer no greater than 6.
6. The system of claim 4,
the receiving link is used for demodulating, filtering and carrying out analog-to-digital conversion processing on the received signals;
the transmission link is used for carrying out analog-to-digital conversion, filtering and modulation processing on a signal to be transmitted.
7. The system of any one of claims 4 to 6, further comprising a first RF phase shifter in the RF front end module circuit, wherein an input of the first RF phase shifter is connected to the moving end of the switch, and an output of the first RF phase shifter is connected to the bi-directional amplifier.
8. The system according to any one of claims 4 to 6,
the receiving link and the transmitting link respectively comprise a frequency synthesizer end;
the frequency synthesizer in the receiving chain and the transmitting chain respectively comprises: the local oscillator, the second radio frequency phase shifter, the buffer and the phase shifter; wherein,
one end of the second radio frequency phase shifter is connected with the output end of the local oscillator, the other end of the second radio frequency phase shifter is connected with the input end of the buffer, and the output end of the buffer is connected with the input end of the phase shifter.
9. The system of claim 8, wherein the receive chain and the transmit chain further comprise a first signal end and a second signal end, respectively; the first signal end and the second signal end both comprise mixers, output ends of the phase shifters in the receiving chain and the sending chain are respectively connected with the mixers in the first signal end and the second signal end, and output ends of the mixers are connected with a movable end of the switch.
10. A signal processing method, wherein the method is applied to the rf front-end module circuit according to any one of claims 1 to 3; the method comprises the following steps:
the control switch is connected to a receiving link or a transmitting link so as to enable the receiving link or the transmitting link to be conducted;
and performing power amplification processing on the signals of the receiving link or the transmitting link based on the control of the switch.
11. The method of claim 10, wherein the performing power amplification processing on the signal of the receiving link or the transmitting link based on the control of the switch comprises:
when the switch is controlled to be accessed to the transmitting link, the signal of the transmitting link is subjected to power amplification processing;
and when the switch is controlled to be accessed to the receiving link, performing power amplification processing on the signal of the receiving link.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111022606.1A CN115733509A (en) | 2021-09-01 | 2021-09-01 | Radio frequency front-end module circuit, antenna phased array transceiving system and signal processing method |
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| CN202111022606.1A CN115733509A (en) | 2021-09-01 | 2021-09-01 | Radio frequency front-end module circuit, antenna phased array transceiving system and signal processing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115987228A (en) * | 2023-03-10 | 2023-04-18 | 三微电子科技(苏州)有限公司 | Bidirectional amplifier |
| CN117118475A (en) * | 2023-10-23 | 2023-11-24 | 南京朗立微集成电路有限公司 | Circuit supporting multiplexing of FX and RX channels of DPD and radio frequency chip |
-
2021
- 2021-09-01 CN CN202111022606.1A patent/CN115733509A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115987228A (en) * | 2023-03-10 | 2023-04-18 | 三微电子科技(苏州)有限公司 | Bidirectional amplifier |
| CN117118475A (en) * | 2023-10-23 | 2023-11-24 | 南京朗立微集成电路有限公司 | Circuit supporting multiplexing of FX and RX channels of DPD and radio frequency chip |
| CN117118475B (en) * | 2023-10-23 | 2024-01-26 | 南京朗立微集成电路有限公司 | Circuit supporting multiplexing of FX and RX channels of DPD and radio frequency chip |
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