Signal receiving path and related product and method

Abstract

The invention provides a signal receiving path, a related product and a method. The signal receiving path comprises a first low noise amplifier, a first filter, a first antenna radiator and a first tuner. The first filter is electrically connected with the first low-noise amplifier. The first filter can filter out radio frequency signals outside a target frequency band through radio frequency signals in the target frequency band, and the radio frequency signals in the target frequency band comprise radio frequency signals of a first working frequency band and radio frequency signals of a second working frequency band. The first antenna radiator is electrically connected to the first filter. The first tuner is electrically connected to the first antenna radiator. When the first tuner is in a first tuning state, a radio frequency signal of a first working frequency band is generated, and when the first tuner is in a second tuning state, a radio frequency signal of a second working frequency band is generated. According to the signal receiving path, the communication module, the electronic equipment, the signal receiving method, the signal receiving device and the storage medium provided by the invention, the signal receiving passband can be formed, and the cost is low.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a signal receiving path, a communication module, an electronic device, a signal receiving method, a signal receiving device and a storage medium. Background Art

[0002] The filter in the signal receiving path is used to filter out interference signals in the RF signal, and the low-noise amplifier is used to reduce noise and amplify the RF signal transmitted by the filter. In the related art, for the signal receiving path that needs to transmit RF signals in multiple working frequency bands, a multi-filter technical solution is adopted to form a signal receiving passband of the working frequency band by switching between multiple filters. However, due to the large number of filters and the need for multiple associated switches, the overall cost of the signal receiving path is relatively high. Summary of the invention

[0003] The present application provides a signal receiving path, a communication module, an electronic device, a signal receiving method, a signal receiving device and a storage medium that can increase the signal receiving passband and reduce the cost.

[0004] In a first aspect, the present application provides a signal receiving path, comprising:

[0005] The first low noise amplifier;

[0006] a first filter, electrically connected to the first low noise amplifier, the first filter being capable of passing radio frequency signals within a target frequency band and filtering out radio frequency signals outside the target frequency band, the radio frequency signals within the target frequency band including radio frequency signals in a first working frequency band and radio frequency signals in a second working frequency band;

[0007] a first antenna radiator, the first antenna radiator being electrically connected to the first filter; and

[0008] A first tuner, wherein the first tuner is electrically connected to the first antenna radiator. When the first tuner is in a first tuning state, the first antenna radiator receives electromagnetic wave signals in the first working frequency band and converts them into radio frequency signals in the first working frequency band for transmission to the first filter. When the first tuner is in a second tuning state, the first antenna radiator receives electromagnetic wave signals in the second working frequency band and converts them into radio frequency signals in the second working frequency band for transmission to the first filter.

[0009] In the second aspect, the present application also provides a communication module, including a RF transceiver path and the signal receiving path, the RF transceiver path including a power amplifier, a second low-noise amplifier, a second filter, a second tuner and a second antenna radiator, the second filter is electrically connected to the power amplifier, the second low-noise amplifier and the second antenna radiator, the second filter is used to filter out stray signals in the RF signal transmitted between the power amplifier and the second antenna radiator, and is used to filter out stray signals in the RF signal transmitted between the power amplifier and the second low-noise amplifier, the second tuner is electrically connected to the second antenna radiator, and is used to tune the working frequency band of the second antenna radiator.

[0010] In a third aspect, the present application also provides an electronic device, including a housing, a circuit board and the signal receiving path, wherein the first low-noise amplifier, the first filter and the first tuner are arranged on the circuit board, and the first antenna radiator is arranged on the housing.

[0011] In a fourth aspect, the present application also provides a signal receiving method, comprising:

[0012] Controlling the first tuner to be in a first tuning state, so that the first antenna radiator receives the electromagnetic wave signal of the first working frequency band and converts it into a radio frequency signal of the first working frequency band and transmits it to the first filter, so that the first filter passes the radio frequency signal within the target frequency band and filters out the radio frequency signal outside the target frequency band and then transmits it to the first low noise amplifier;

[0013] Control the first tuner to be in a second tuning state, so that the first antenna radiator receives the electromagnetic wave signal of the second working frequency band and converts it into a radio frequency signal of the second working frequency band and transmits it to the first filter, so that the first filter passes the radio frequency signal within the target frequency band and filters out the radio frequency signal outside the target frequency band and then transmits it to the first low-noise amplifier.

[0014] In a fifth aspect, the present application further provides a signal receiving device, including:

[0015] A first processing unit is used to control the first tuner to be in a first tuning state, so that the first antenna radiator receives the electromagnetic wave signal of the first working frequency band and converts it into a radio frequency signal of the first working frequency band and transmits it to the first filter, so that the first filter passes the radio frequency signal within the target frequency band and filters out the radio frequency signal outside the target frequency band and then transmits it to the first low noise amplifier;

[0016] The second processing unit is used to control the first tuner to be in a second tuning state, so that the first antenna radiator receives the electromagnetic wave signal of the second working frequency band and converts it into a radio frequency signal of the second working frequency band and transmits it to the first filter, so that the first filter passes the radio frequency signal within the target frequency band and filters out the radio frequency signal outside the target frequency band and then transmits it to the first low-noise amplifier.

[0017] In a sixth aspect, the present application also provides a storage medium storing a computer program, which implements the signal receiving method when executed by a processor.

[0018] The signal receiving path provided by the present application includes a first low noise amplifier, a first filter, a first antenna radiator and a first tuner. The first filter can pass the radio frequency signal within the target frequency band and filter out the radio frequency signal outside the target frequency band. The first tuner can enable the first antenna radiator to receive the electromagnetic wave signal of the first working frequency band within the target frequency band and convert it into the radio frequency signal of the first working frequency band and transmit it to the first filter, or enable the first antenna radiator to receive the electromagnetic wave signal of the second working frequency band within the target frequency band and convert it into the radio frequency signal of the second working frequency band and transmit it to the first filter, so that the radio frequency signal of the first working frequency band and the radio frequency signal of the second working frequency band can be transmitted to the low noise amplifier respectively through the joint action of the first tuner and the first filter to form a signal receiving passband of the working frequency band, which can ensure the normal operation of the low noise amplifier and avoid the situation of out of band blocking (OBB). In addition, the signal receiving path only needs to set the first filter, the number of filters is small, and the cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments are briefly introduced below.

[0020] Figure 1 A schematic diagram of the structure of a signal receiving path provided in an embodiment of the present application;

[0021] Figure 2 for Figure 1 A schematic diagram showing that the radio frequency signal in the target frequency band passed by the first filter in the signal receiving path includes a signal passband radio frequency signal formed by a frequency band of 758 MHz to 960 MHz;

[0022] Figure 3 for Figure 2 A schematic diagram showing that the radio frequency signal within the target frequency band includes a radio frequency signal of a first working frequency band and a radio frequency signal of a second working frequency band;

[0023] Figure 4 for Figure 1A schematic diagram of a signal passband formed by the first tuner receiving an electromagnetic wave signal in a first operating frequency band and converting the signal into a radio frequency signal in the first operating frequency band;

[0024] Figure 5 A schematic diagram of a signal receiving passband formed by a signal receiving path according to an embodiment of the present application;

[0025] Figure 6 for Figure 1 The first tuner of the signal receiving path shown includes a switching switch, a first tuning circuit and a second tuning circuit;

[0026] Figure 7 A schematic diagram of a signal receiving passband formed by a signal receiving path according to another embodiment of the present application;

[0027] Figure 8 for Figure 6 The first tuner of the signal receiving path shown also includes a schematic diagram of the structure of a third tuning circuit;

[0028] Fig. 9 A schematic diagram of the structure of a communication module provided in an embodiment of the present application;

[0029] Fig.10 for Fig. 9 The communication module shown includes a schematic diagram of a structure of multiple signal receiving paths;

[0030] Fig.11 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0031] Fig.12 A schematic diagram of a flow chart of a signal receiving method provided in an embodiment of the present application;

[0032] Fig.13 for Fig.12 The signal receiving method shown is a flowchart of step S10 including step S101, and step S20 including step S201;

[0033] Fig.14 A flowchart of another signal receiving method provided in an embodiment of the present application;

[0034] Fig.15 for Fig.14 The signal receiving method shown in FIG. 1 is a flow chart showing that step S30 includes step S301;

[0035] Fig.16 A schematic diagram of the structure of a signal receiving device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] The technical solution provided by the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the embodiments described in the present application are only a part of the embodiments, not all of the embodiments. Based on the embodiments described in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0037] Reference to an embodiment in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive, independent, or alternative to other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0038] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order; the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0039] like Figure 1 As shown, Figure 1 The structure diagram of a signal receiving path 10 provided in an embodiment of the present application is as follows. The signal receiving path 10 comprises a first low noise amplifier 101 , a first filter 102 , a first antenna radiator 103 and a first tuner 104 .

[0040] A low noise amplifier (LNA) is an amplifier with a very low noise figure. The low noise amplifier is used to reduce noise and amplify the transmitted radio frequency signal. The low noise amplifier can be used as a high-frequency or intermediate-frequency preamplifier for various radio receivers, as well as an amplifier for high-sensitivity electronic detection equipment. In the present application, the first low noise amplifier 101 is an LNA in the signal receiving path 10. The first low noise amplifier 101 can be selected from a general low noise amplifier, a differential low noise amplifier, a broadband low noise amplifier, a microwave low noise amplifier, etc.

[0041] The first filter 102 is a band pass filter (Band Pass Filter, BPF). The band pass filter allows signals of a certain frequency band to pass through, and suppresses signals, interference and noise below or above the frequency band. The first filter 102 is electrically connected to the first low noise amplifier 101. The first filter 102 and the first low noise amplifier 101 can be directly electrically connected or indirectly electrically connected. Direct electrical connection can be understood in this application as physical contact electrical conduction; or it can also be understood as physical line electrical connection that can directly transmit electrical signals through wires, printed circuit boards (Printed Circuit Board, PCB), etc. Indirect electrical connection can be understood in this application as non-physical contact electrical conduction; or it can also be understood as electrical connection through an intermediate circuit structure that can convert and transmit electrical signals.

[0042] The first filter 102 can pass the RF signal within the target frequency band and filter out the RF signal outside the target frequency band. Optionally, the RF signal within the target frequency band can be a RF signal in a low frequency band (less than 1 GHz), and the RF signal outside the target frequency band can be a RF signal in a non-low frequency band, such as a RF signal in a medium or high frequency band (1 GHz to 3 GHz), a RF signal in an ultra-high frequency band (greater than 3 GHz), etc.; or Figure 2 As shown, the radio frequency signal within the target frequency band may be a radio frequency signal in the frequency range of 758 MHz to 960 MHz, and the radio frequency signal outside the target frequency band includes a radio frequency signal less than 758 MHz and a radio frequency signal greater than 960 MHz.

[0043] Since the bandwidth of the low frequency band is narrower, there are more commonly used working frequency bands and the frequency difference between adjacent working frequency bands is small, the possibility of mutual interference is greater, so the signal receiving path 10 provided in the present application is more meaningful when applied to the reception of radio frequency signals in the low frequency band. In the following embodiments, unless otherwise specified, the radio frequency signal in the target frequency band takes the radio frequency signal in the 758MHz to 960MHz band in the low frequency band as an example.

[0044] The RF signal in the target frequency band includes a RF signal in the first working frequency band and a RF signal in the second working frequency band. It can be understood that the RF signal in the target frequency band includes at least RF signals in two working frequency bands. The second working frequency band is different from the first working frequency band. Figure 3As shown, taking the case where the RF signal in the target frequency band is a RF signal in the frequency band of 758MHz to 960MHz, and the signal receiving path 10 realizes 5G signal reception as an example, the RF signal in the first working frequency band can be a RF signal in the N28 frequency band (758MHz to 803MHz), and the RF signal in the second working frequency band can be a RF signal in the N5 frequency band (869MHz to 894MHz); or, the RF signal in the first working frequency band can be a RF signal in the N28 frequency band (758MHz to 803MHz), and the RF signal in the second working frequency band can be a RF signal in the N8 frequency band (925MHz to 960MHz); or, the RF signal in the first working frequency band can be a RF signal in the N5 frequency band (869MHz to 894MHz), and the RF signal in the second working frequency band can be a RF signal in the N8 frequency band (925MHz to 960MHz).

[0045] Of course, in other embodiments, the signal receiving path 10 may also be a path for realizing 4G signal reception, and the RF signal of the first working frequency band may be a RF signal of the B28 frequency band (758MHz~803MHz), and the RF signal of the second working frequency band may be a RF signal of the B5 frequency band (869MHz~894MHz); or, the RF signal of the first working frequency band may be a RF signal of the B28 frequency band (758MHz~803MHz), and the RF signal of the second working frequency band may be a RF signal of the B8 frequency band (925MHz~960MHz); or, the RF signal of the first working frequency band may be a RF signal of the B5 frequency band (869MHz~894MHz), and the RF signal of the second working frequency band may be a RF signal of the B8 frequency band (925MHz~960MHz).

[0046] In practical applications, the RF signal of the first working frequency band and the RF signal of the second working frequency band are based on actual communication requirements. In the following embodiments, the RF signal of the first working frequency band is the RF signal of the N28 frequency band, and the RF signal of the second working frequency band is the RF signal of the N5 frequency band.

[0047] The first antenna radiator 103 is a conductor with a specific shape and size, and is used to receive electromagnetic wave signals. The material of the first antenna radiator 103 can be metal, alloy, etc. The first antenna radiator 103 is electrically connected to the first filter 102. The first antenna radiator 103 and the first filter 102 can be directly or indirectly electrically connected.

[0048] The first tuner 104 is electrically connected to the first antenna radiator 103. The first tuner 104 and the first antenna radiator 103 may be directly electrically connected or indirectly electrically connected. The first tuner 104 is used to achieve frequency band conversion of the electromagnetic wave signal received by the first antenna radiator 103. Specifically, the first tuner 104 includes a matching network formed by a plurality of tuning circuits. The plurality of different tuning circuits in the first tuner 104 can tune the equivalent electrical length of the first antenna radiator 103, change the resonance mode generated by the first antenna radiator 103, and thereby achieve frequency band conversion of the electromagnetic wave signal received by the first antenna radiator 103.

[0049] like Figure 4 As shown, when the first tuner 104 is in the first tuning state, the first antenna radiator 103 receives the electromagnetic wave signal of the first working frequency band and converts it into the radio frequency signal of the first working frequency band and transmits it to the first filter 102. In other words, when the first tuner 104 is in the first tuning state, the first antenna radiator 103 supports the first working frequency band. In a possible implementation, when the first tuner 104 is in the first tuning state, the first antenna radiator 103 mainly receives the radio frequency signal of the N28 frequency band, and basically does not receive the radio frequency signal of the N5 frequency band or has the effect of suppressing the reception of the radio frequency signal of the N5 frequency band. At this time, the first antenna radiator 103 mainly transmits the radio frequency signal of the N28 frequency band to the first filter 102. The first filter 102 receives the radio frequency signal transmitted by the first antenna radiator 103, and further filters out the spurious signals outside the target frequency band in the received radio frequency signal. The signal received by the first low noise amplifier 101 is a radio frequency signal in the N28 frequency band, and has substantially no spurious signals outside the target frequency band, and substantially no radio frequency signals in other frequency bands in the target frequency band except the radio frequency signal in the N28 frequency band.

[0050] When the first tuner 104 is in the second tuning state, the first antenna radiator 103 receives the electromagnetic wave signal of the second working frequency band and converts it into the radio frequency signal of the second working frequency band and transmits it to the first filter 102. In other words, when the first tuner 104 is in the second tuning state, the first antenna radiator 103 supports the second working frequency band. In a possible implementation, when the first tuner 104 is in the second tuning state, the first antenna radiator 103 mainly receives the radio frequency signal of the N5 frequency band, and basically does not receive the radio frequency signal of the N28 frequency band or has the effect of suppressing the reception of the radio frequency signal of the N28 frequency band. At this time, the first antenna radiator 103 mainly transmits the radio frequency signal of the N5 frequency band to the first filter 102. The first filter 102 receives the radio frequency signal transmitted by the first antenna radiator 103, and further filters out the spurious signals outside the target frequency band in the received radio frequency signal. The signal received by the first low noise amplifier 101 is a radio frequency signal in the N5 frequency band, and has substantially no spurious signals outside the target frequency band, and substantially no radio frequency signals in other frequency bands in the target frequency band except the radio frequency signal in the N5 frequency band.

[0051] like Figure 5 As shown, Figure 5 It is a schematic diagram of a signal receiving passband formed by a signal receiving path 10 according to an embodiment of the present application. Figure 5 The middle curve 1 is a signal receiving passband formed by the first filter 102 filtering out the radio frequency signals outside the target frequency band. Figure 5 The middle curve 2 is a signal receiving passband formed by the first tuner 104 tuning the first antenna radiator 103. Figure 5 It can be seen from the figure that the signal receiving passband ( Figure 5 The intersection of curve 1 and curve 2 in the middle) can not only realize the transmission of RF signals in two working frequency bands, but also avoid the RF signals in the N28 band and the N5 band from entering the first low noise amplifier 101 at the same time, causing the OBB situation in the first low noise amplifier 101, thereby improving the reliability of the signal receiving path 10.

[0052] The signal receiving path 10 provided in the present application includes a first low-noise amplifier 101, a first filter 102, a first antenna radiator 103 and a first tuner 104. The first filter 102 can pass the radio frequency signal within the target frequency band and filter out the radio frequency signal outside the target frequency band. The first tuner 104 can enable the first antenna radiator 103 to receive the electromagnetic wave signal of the first working frequency band within the target frequency band and convert it into the radio frequency signal of the first working frequency band and transmit it to the first filter 102, or enable the first antenna radiator 103 to receive the electromagnetic wave signal of the second working frequency band within the target frequency band and convert it into the radio frequency signal of the second working frequency band and transmit it to the first filter 102. Therefore, through the joint action of the first tuner 104 and the first filter 102, the radio frequency signal of the first working frequency band and the radio frequency signal of the second working frequency band can be respectively transmitted to the low-noise amplifier to form a signal receiving passband of the working frequency band, which can ensure the normal operation of the low-noise amplifier and avoid out of band blocking (OBB). In addition, the signal receiving path only needs to be provided with the first filter 102, and the number of filters is small, which can reduce the cost.

[0053] Among them, Figure 6 As shown, the first tuner 104 includes a switch 140, a first tuning circuit 141 and a second tuning circuit 142. The switch 140 can be a single-pole double-throw switch, a single-pole four-throw switch, a double-pole double-throw switch, etc. The first tuning circuit 141 can include at least one of impedance elements such as a capacitor, an inductor, and a resistor. When the first tuning circuit 141 includes a plurality of impedance elements, the electrical connection between the plurality of impedance elements can include series connection and / or parallel connection. The second tuning circuit 142 can include at least one of impedance elements such as a capacitor, an inductor, and a resistor. When the second tuning circuit 142 includes a plurality of impedance elements, the electrical connection between the plurality of impedance elements can include series connection and / or parallel connection.

[0054] The switch 140 is electrically connected to the first antenna radiator 103, the first tuning circuit 141, and the second tuning circuit 142. The switch 140 is used to control the first antenna radiator 103 to be connected to one of the first tuning circuit 141 and the second tuning circuit 142. Specifically, when the first tuner 104 is in the first tuning state, the first tuning circuit 141 and the first antenna radiator 103 are connected through the switch 140. When the first tuner 104 is in the second tuning state, the second tuning circuit 142 and the first antenna radiator 103 are connected through the switch 140.

[0055] The impedance value of the first tuning circuit 141 is different from the impedance value of the second tuning circuit 142, so that when the first antenna radiator 103 is connected to the first tuning circuit 141, the first antenna radiator 103 mainly receives the RF signal of the first working frequency band, basically does not receive the RF signal of the second working frequency band, or has the effect of suppressing the reception of the RF signal of the second working frequency band. When the first antenna radiator 103 is connected to the second tuning circuit 142, the first antenna radiator 103 mainly receives the RF signal of the second working frequency band, basically does not receive the RF signal of the first working frequency band, or has the effect of suppressing the reception of the RF signal of the first working frequency band.

[0056] By making the first tuner 104 include a switching switch 140, a first tuning circuit 141 and a second tuning circuit 142, and switching the conduction state of the first antenna radiator 103 and the first tuning circuit 141 and the second tuning circuit 142 by switching the switching switch 140, it can be achieved that when the first tuner 104 is in the first tuning state, the first antenna radiator 103 receives the electromagnetic wave signal of the first working frequency band, and when the first tuner 104 is in the second tuning state, the first antenna radiator 103 receives the electromagnetic wave signal of the second working frequency band.

[0057] Further, the RF signal in the target frequency band also includes a RF signal in a third working frequency band. It is understandable that the RF signal in the target frequency band includes at least RF signals in three working frequency bands. The third working frequency band is different from the first working frequency band, and the third working frequency band is different from the second working frequency band. In the following embodiments, the RF signal in the third working frequency band is an RF signal in the N8 frequency band as an example.

[0058] When the first tuner 104 is in the third tuning state, the first antenna radiator 103 receives the electromagnetic wave signal of the third working frequency band and converts it into the radio frequency signal of the third working frequency band and transmits it to the first filter 102. In a possible implementation, when the first tuner 104 is in the third tuning state, the first antenna radiator 103 mainly receives the radio frequency signal of the N8 frequency band, and basically does not receive the radio frequency signal of the N5 frequency band and the N28 frequency band, or has the effect of suppressing the reception of the radio frequency signal of the N5 frequency band and the N28 frequency band. At this time, the first antenna radiator 103 mainly transmits the radio frequency signal of the N8 frequency band to the first filter 102. The first filter 102 receives the radio frequency signal transmitted by the first antenna radiator 103, and further filters out the spurious signals outside the target frequency band in the received radio frequency signal. The signal received by the first low noise amplifier 101 is the radio frequency signal of the N8 frequency band, and there is basically no spurious signal outside the target frequency band, and there is basically no radio frequency signal of other frequency bands in the target frequency band except the radio frequency signal of the N8 frequency band.

[0059] like Figure 7 As shown, Figure 7FIG. 1 is a schematic diagram of a signal receiving passband formed by a signal receiving path 10 according to another embodiment of the present application. Figure 7 The middle curve 3 is a signal receiving passband formed by the first filter 102 filtering out the radio frequency signals outside the target frequency band. Figure 7 The middle curve 4 is a signal receiving passband formed by the first tuner 104 tuning the first antenna radiator 103. Figure 7 It can be seen from the figure that the signal receiving passband ( Figure 7 The intersection of curve 3 and curve 4 in the middle) can not only realize the transmission of RF signals in three working frequency bands, but also prevent the RF signals in the N28 band, the N5 band and the N8 band from entering the first low noise amplifier 101 at the same time, causing the OBB situation in the first low noise amplifier 101, thereby improving the reliability of the signal receiving path 10.

[0060] Among them, Figure 8 As shown, the first tuner 104 further includes a third tuning circuit 143. The third tuning circuit 143 may include at least one of impedance elements such as capacitors, inductors, resistors, etc. When the third tuning circuit 143 includes multiple impedance elements, the electrical connection between the multiple impedance elements may include series connection and / or parallel connection.

[0061] The switch 140 is also electrically connected to the third tuning circuit 143. In this embodiment, the switch 140 is used to control the first antenna radiator 103 to be connected to one of the first tuning circuit 141, the second tuning circuit 142 and the third tuning circuit 143. Specifically, when the first tuner 104 is in the first tuning state, the first tuning circuit 141 is connected to the first antenna radiator 103 through the switch 140; when the first tuner 104 is in the second tuning state, the second tuning circuit 142 is connected to the first antenna radiator 103 through the switch 140; when the first tuner 104 is in the third tuning state, the third tuning circuit 143 is connected to the first antenna radiator 103 through the switch 140.

[0062] The impedance value of the third tuning circuit 143 is different from the impedance value of the first tuning circuit 141 , and the impedance value of the third tuning circuit 143 is different from the impedance value of the second tuning circuit 142 . Thus, when the first antenna radiator 103 is connected to the first tuning circuit 141, the first antenna radiator 103 mainly receives the radio frequency signal of the first working frequency band, and basically does not receive the radio frequency signal of the second working frequency band or the radio frequency signal of the third working frequency band, or has the effect of suppressing the reception of the radio frequency signal of the second working frequency band or the radio frequency signal of the third working frequency band; when the first antenna radiator 103 is connected to the second tuning circuit 142, the first antenna radiator 103 mainly receives the radio frequency signal of the second working frequency band, and basically does not receive the radio frequency signal of the first working frequency band or the radio frequency signal of the third working frequency band, or has the effect of suppressing the reception of the radio frequency signal of the first working frequency band or the radio frequency signal of the third working frequency band; when the first antenna radiator 103 is connected to the third tuning circuit 143, the first antenna radiator 103 mainly receives the radio frequency signal of the third working frequency band, and basically does not receive the radio frequency signal of the first working frequency band or the radio frequency signal of the second working frequency band, or has the effect of suppressing the reception of the radio frequency signal of the first working frequency band or the radio frequency signal of the second working frequency band.

[0063] By making the first tuner 104 include a switching switch 140, a first tuning circuit 141, a second tuning circuit 142 and a third tuning circuit 143, and switching the conduction state of the first antenna radiator 103 and the first tuning circuit 141, the second tuning circuit 142 and the third tuning circuit 143 by switching the switching switch 140, it can be achieved that when the first tuner 104 is in the first tuning state, the first antenna radiator 103 receives the electromagnetic wave signal of the first working frequency band, when the first tuner 104 is in the second tuning state, the first antenna radiator 103 receives the electromagnetic wave signal of the second working frequency band, and when the first tuner 104 is in the third tuning state, the first antenna radiator 103 receives the electromagnetic wave signal of the third working frequency band.

[0064] like Fig. 9 As shown, Fig. 9 A schematic diagram of the structure of a communication module 200 provided in an embodiment of the present application. The communication module 200 includes a radio frequency transceiver path 20 and a signal receiving path 10 described in any of the above embodiments.

[0065] Among them, the RF transceiver path 20 includes a power amplifier 201, a second low noise amplifier 202, a second filter 203, a second tuner 204 and a second antenna radiator 205. The power amplifier 201 (Power Amplifier, PA) is used to amplify the power of the signal. In the present application, the second low noise amplifier 202 is an LNA in the RF transceiver path 20. The second low noise amplifier 202 can be selected as one of a general low noise amplifier, a differential low noise amplifier, a broadband low noise amplifier, a microwave low noise amplifier, etc. The second filter 203 is a duplexer. The second filter 203 may include two sets of filter circuits with different frequencies to prevent the signal of the transmitting path from being transmitted back through the receiving path. The second tuner 204 is used to realize the frequency band conversion of the second antenna radiator 205 receiving and transmitting signals. Specifically, the second tuner 204 may include a matching network formed by a plurality of tuning circuits. The multiple different tuning circuits in the second tuner 204 can tune the equivalent electrical length of the second antenna radiator 205, change the resonance mode generated by the second antenna radiator 205, and thus realize the frequency band conversion of the second antenna radiator 205 receiving and transmitting signals. The second antenna radiator 205 is a conductor with a specific shape and size, which is used to receive and transmit electromagnetic wave signals. The material of the second antenna radiator 205 can be metal, alloy, etc. A signal transmission path is formed between the power amplifier 201, the second filter 203, the second tuner 204 and the second antenna radiator 205; a signal receiving path 10 is formed between the second low noise amplifier 202, the second filter 203, the second tuner 204 and the second antenna radiator 205.

[0066] The second filter 203 is electrically connected to the power amplifier 201, the second low noise amplifier 202 and the second antenna radiator 205. The second filter 203 and the power amplifier 201 can be directly electrically connected or indirectly electrically connected. The second filter 203 and the second low noise amplifier 202 can be directly electrically connected or indirectly electrically connected. The second filter 203 and the second antenna radiator 205 can be directly electrically connected or indirectly electrically connected. The second filter 203 is used to filter out stray signals in the radio frequency signal transmitted between the power amplifier 201 and the second antenna radiator 205, and to filter out stray signals in the radio frequency signal transmitted between the power amplifier 201 and the second low noise amplifier 202.

[0067] The second tuner 204 is electrically connected to the second antenna radiator 205. The second tuner 204 and the second antenna radiator 205 may be directly electrically connected or indirectly electrically connected. The second tuner 204 is used to tune the working frequency band of the second antenna radiator 205. It can be understood that the second tuner 204 is used to tune the frequency band of the electromagnetic wave signal received by the second antenna radiator 205 and / or tune the frequency band of the electromagnetic wave signal transmitted by the second antenna radiator 205.

[0068] The communication module 200 provided in the present application includes the signal receiving path 10 described in any of the above embodiments, thereby improving the reliability of the first low noise amplifier 101 and avoiding out-of-band blocking (OBB) of the first low noise amplifier 101. In addition, the number of filters in the communication module 200 is reduced, which can reduce costs.

[0069] In a possible embodiment, Fig.10 As shown, the number of signal receiving paths 10 is multiple. The communication module 200 also includes a radio frequency transceiver 21, a first radio frequency receiver 11 and a second radio frequency receiver 12. The radio frequency transceiver 21 includes a transmitter and a receiver, the transmitter is used to transmit radio frequency signals, and the receiver is used to receive radio frequency signals. The radio frequency transceiver 21 is electrically connected to a power amplifier 201 and a second low noise amplifier 202. Specifically, the transmitter of the radio frequency transceiver 21 is electrically connected to the power amplifier 201, and the receiver of the radio frequency transceiver 21 is electrically connected to the second low noise amplifier 202. The first radio frequency receiver 11 is electrically connected to the first low noise amplifier 101 of a signal receiving path 10. The second radio frequency receiver 12 is electrically connected to the first low noise amplifier 101 of the remaining signal receiving paths 10.

[0070] It can be understood that in this embodiment, one signal receiving path 10 forms a diversity receiving path, and the remaining signal receiving paths 10 form a multiple-input multiple-output receiving path.

[0071] Optionally, there are three signal receiving paths 10, which are described as a first signal receiving path, a second signal receiving path, and a third signal receiving path. The first RF receiver 11 is electrically connected to a first low noise amplifier 101 of the first signal receiving path. The second RF receiver 12 is electrically connected to the first low noise amplifier 101 of the second signal receiving path and the first low noise amplifier 101 of the third signal receiving path. The second RF receiver 12, the second signal receiving path, and the third signal receiving path form a dual-input dual-output receiving path.

[0072] like Fig.11 As shown, Fig.11A schematic diagram of the structure of an electronic device 100 provided in an embodiment of the present application. The electronic device 100 may be a device with wireless communication function such as a mobile phone, a tablet computer, a watch, etc. The embodiment of the present application takes a mobile phone as an example. It should be noted that the drawings of the present application simply illustrate the structure of the electronic device 100, which should not be understood as a structural limitation of the electronic device 100. The electronic device 100 includes a housing 1, a circuit board 2, and a signal receiving path 10 described in any of the above embodiments. Among them, the first low noise amplifier 101, the first filter 102, and the first tuner 104 are arranged on the circuit board 2. The first antenna radiator 103 is arranged in the housing. It should be noted that in the present application, the first low noise amplifier 101, the first filter 102, and the first tuner 104 are arranged on the circuit board 2, which may be the first low noise amplifier 101, the first filter 102, and the first tuner 104 are integrated on the circuit board 2, or the first low noise amplifier 101, the first filter 102, and the first tuner 104 are physically connected to the circuit board 2. The first antenna radiator 103 is disposed on the housing, which may be that the first antenna radiator 103 is integrated on the housing, or that the first antenna radiator 103 is physically connected to the housing.

[0073] like Fig.12 As shown, Fig.12 A flow chart of a signal receiving method provided in an embodiment of the present application. The signal receiving method is used to implement signal reception. It is understandable that since the method embodiment and the structural embodiment are different presentation forms of the same technical concept, the content of the above structural embodiment should be synchronously adapted to the method embodiment. The signal receiving method may include but is not limited to the following steps S10 and S20.

[0074] S10: Control the first tuner 104 to be in a first tuning state, so that the first antenna radiator 103 receives the electromagnetic wave signal of the first working frequency band and converts it into the radio frequency signal of the first working frequency band and transmits it to the first filter 102, so that the first filter 102 passes the radio frequency signal within the target frequency band and filters out the radio frequency signal outside the target frequency band and then transmits it to the first low noise amplifier 101;

[0075] S20: Control the first tuner 104 to be in a second tuning state, so that the first antenna radiator 103 receives the electromagnetic wave signal of the second working frequency band and converts it into a radio frequency signal of the second working frequency band and transmits it to the first filter 102, so that the first filter 102 passes the radio frequency signal within the target frequency band and filters out the radio frequency signal outside the target frequency band and then transmits it to the first low noise amplifier 101.

[0076] In a possible embodiment, Fig.13 As shown, controlling the first tuner 104 to be in the first tuning state in step S10 may include but is not limited to the following steps S101.

[0077] S101: Control the first tuning circuit 141 and the first antenna radiator 103 to be turned on by switching the switch 140;

[0078] Controlling the first tuner 104 to be in the second tuning state in step S20 may include but is not limited to the following steps S201 .

[0079] S201 : Control the second tuning circuit 142 and the first antenna radiator 103 to be connected via the switch 140 .

[0080] In this embodiment, under the tuning action of the first tuner 104, the first antenna radiator 103 has a first resonant mode and a second resonant mode. Specifically, when the first tuning circuit 141 is connected to the first antenna radiator 103, the first antenna radiator 103 has a first resonant mode; when the second tuning circuit 142 is connected to the first antenna radiator 103, the first antenna radiator 103 has a second resonant mode. The current distribution of the first resonant mode is different from the current distribution of the second resonant mode. In the first resonant mode, the first antenna radiator 103 receives an electromagnetic wave signal in the first working frequency band and converts it into a radio frequency signal in the first working frequency band. In the second resonant mode, the first antenna radiator 103 receives an electromagnetic wave signal in the second working frequency band and converts it into a radio frequency signal in the second working frequency band.

[0081] The first antenna radiator 103 transmits a radio frequency signal of a first working frequency band to the first filter 102, which may be the case where the first antenna radiator 103 directly transmits the radio frequency signal of the first working frequency band to the first filter 102, or the first antenna radiator 103 transmits the radio frequency signal of the first working frequency band to the first filter 102 through the first tuner 104. The first antenna radiator 103 transmits a radio frequency signal of a second working frequency band to the first filter 102, which may be the case where the first antenna radiator 103 directly transmits the radio frequency signal of the second working frequency band to the first filter 102, or the first antenna radiator 103 transmits the radio frequency signal of the first working frequency band to the first filter 102 through the first tuner 104.

[0082] In step S10 , the RF signal transmitted to the first filter 102 includes the RF signal of the first working frequency band within the target frequency band and the RF signal outside the target frequency band, and the RF signal transmitted to the first low noise amplifier 101 via the first filter 102 includes the RF signal of the first working frequency band.

[0083] In step S20 , the RF signal transmitted to the first filter 102 includes the RF signal of the second working frequency band within the target frequency band and the RF signal outside the target frequency band, and the RF signal transmitted to the first low noise amplifier 101 via the first filter 102 includes the RF signal of the second working frequency band.

[0084] Furthermore, if Fig.14 As shown, Fig.14 A flowchart of another signal receiving method provided in an embodiment of the present application is provided. The signal receiving method further includes the following step S30.

[0085] S30: Control the first tuner 104 to be in a third tuning state, so that the first antenna radiator 103 receives the electromagnetic wave signal of the third working frequency band and converts it into a radio frequency signal of the third working frequency band and transmits it to the first filter 102, so that the first filter 102 passes the radio frequency signal within the target frequency band and filters out the radio frequency signal outside the target frequency band and then transmits it to the first low noise amplifier 101.

[0086] In a possible embodiment, Fig.15 As shown, controlling the first tuner 104 to be in the first tuning state in step S30 may include but is not limited to the following steps S301.

[0087] S301 : Control the third tuning circuit 143 and the first antenna radiator 103 to be connected via the switch 140 .

[0088] In this embodiment, under the tuning action of the first tuner 104, the first antenna radiator 103 has a first resonance mode, a second resonance mode and a third resonance mode. Specifically, when the first tuning circuit 141 is connected to the first antenna radiator 103, the first antenna radiator 103 has a first resonance mode; when the second tuning circuit 142 is connected to the first antenna radiator 103, the first antenna radiator 103 has a second resonance mode; when the third tuning circuit 143 is connected to the first antenna radiator 103, the first antenna radiator 103 has a third resonance mode. The current distribution of the first resonance mode, the current distribution of the second resonance mode and the current distribution of the third resonance mode are different. In the first resonance mode, the first antenna radiator 103 receives the electromagnetic wave signal of the first working frequency band and converts it into the radio frequency signal of the first working frequency band. In the second resonance mode, the first antenna radiator 103 receives the electromagnetic wave signal of the second working frequency band and converts it into the radio frequency signal of the second working frequency band. In the third resonance mode, the first antenna radiator 103 receives the electromagnetic wave signal in the third working frequency band and converts it into a radio frequency signal in the third working frequency band.

[0089] Among them, the first antenna radiator 103 transmits the radio frequency signal of the third working frequency band to the first filter 102. The first antenna radiator 103 can directly transmit the radio frequency signal of the third working frequency band to the first filter 102, or the first antenna radiator 103 transmits the radio frequency signal of the third working frequency band to the first filter 102 through the first tuner 104.

[0090] In step S30 , the RF signal transmitted to the first filter 102 includes the RF signal of the third working frequency band within the target frequency band and the RF signal outside the target frequency band, and the RF signal transmitted to the first low noise amplifier 101 via the first filter 102 includes the RF signal of the third working frequency band.

[0091] like Fig.16 As shown, Fig.16 The structure diagram of a signal receiving device 300 provided in an embodiment of the present application is as follows. The signal receiving device 300 includes a first processing unit 31 and a second processing unit 32 .

[0092] The first processing unit 31 is used to control the first tuner 104 to be in a first tuning state, so that the first antenna radiator 103 receives the electromagnetic wave signal of the first working frequency band and converts it into a radio frequency signal of the first working frequency band and transmits it to the first filter 102, so that the first filter 102 passes the radio frequency signal within the target frequency band and filters out the radio frequency signal outside the target frequency band and then transmits it to the first low noise amplifier 101;

[0093] The second processing unit 32 is used to control the first tuner 104 to be in a second tuning state, so that the first antenna radiator 103 receives the electromagnetic wave signal of the second working frequency band and converts it into a radio frequency signal of the second working frequency band and transmits it to the first filter 102, so that the first filter 102 passes the radio frequency signal within the target frequency band and filters out the radio frequency signal outside the target frequency band and then transmits it to the first low noise amplifier 101.

[0094] For the specific manner in which the first processing unit 31 controls the first tuner 104, the first antenna radiator 103, the first filter 102, and the first low noise amplifier 101, reference may be made to the description of step S10 in the above embodiment. For the specific manner in which the second processing unit 32 controls the first tuner 104, the first antenna radiator 103, the first filter 102, and the first low noise amplifier 101, reference may be made to the description of step S20 in the above embodiment.

[0095] In addition, the present application also provides a storage medium. The storage medium stores a computer program. When the computer program is executed by the processor, the signal receiving method described in any of the above embodiments is implemented. The storage medium can be a separate device independent of the processor, or it can be integrated in the processor. In the implementation process, each step S of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or an instruction in the form of software. The processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The processor can implement or execute the methods, steps S and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. Step S of the method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware decoding processor to be executed, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a random access storage medium, a flash memory, a read-only storage medium, a programmable read-only storage medium, or an electrically erasable programmable storage medium, a register, or other mature storage medium in the art. The storage medium is located in the storage medium, and the processor reads the information in the storage medium and completes the steps of the above method in combination with its hardware.

[0096] It can be understood that the storage medium in the embodiments of the present application can be a volatile storage medium or a non-volatile storage medium, or can include both volatile and non-volatile storage media. Among them, the non-volatile storage medium can be a read-only storage medium (Read Only Memory, ROM), a programmable read-only storage medium (Programmable ROM, PROM), an erasable programmable read-only storage medium (Erasable PROM, EPROM), an electrically erasable programmable read-only storage medium (Electrically EPROM, EEPROM) or a flash memory. The volatile storage medium can be a random access storage medium (Random Access Memory, RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory media (SRAM), dynamic random access memory media (DRAM), synchronous dynamic random access memory media (SDRAM), double data rate synchronous dynamic random access memory media (DDR SDRAM), enhanced synchronous dynamic random access memory media (ESDRAM), synchronous link dynamic random access memory media (SLDRAM) and direct memory bus random access memory media (DRRAM). It should be noted that the storage media of the systems and methods described in the present application are intended to include, but are not limited to, these and any other suitable types of storage media.

[0097] The features mentioned in the specification, claims and drawings can be combined with each other as long as they are meaningful within the scope of this application. The advantages and features described for the signal receiving path 10 are applicable to the communication module 200, the electronic device 100, the signal receiving method, the signal receiving device 300 and the storage medium in a corresponding manner.

[0098] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application, and these improvements and modifications are also regarded as the scope of protection of the present application.

Claims

1. A signal receiving path, characterized in that: include: The first low noise amplifier; a first filter, electrically connected to the first low noise amplifier, the first filter being capable of passing radio frequency signals within a target frequency band and filtering out radio frequency signals outside the target frequency band, the radio frequency signals within the target frequency band including radio frequency signals in a first working frequency band and radio frequency signals in a second working frequency band; a first antenna radiator, the first antenna radiator being electrically connected to the first filter; and A first tuner, wherein the first tuner is electrically connected to the first antenna radiator. When the first tuner is in a first tuning state, the first antenna radiator receives electromagnetic wave signals in the first working frequency band and converts them into radio frequency signals in the first working frequency band for transmission to the first filter. When the first tuner is in a second tuning state, the first antenna radiator receives electromagnetic wave signals in the second working frequency band and converts them into radio frequency signals in the second working frequency band for transmission to the first filter.

2. The signal receiving path according to claim 1, characterized in that: The first tuner includes a switching switch, a first tuning circuit and a second tuning circuit. The impedance value of the first tuning circuit is different from the impedance value of the second tuning circuit. The switching switch electrically connects the first antenna radiator, the first tuning circuit and the second tuning circuit. When the first tuner is in the first tuning state, the first tuning circuit and the first antenna radiator are connected through the switching switch. When the first tuner is in the second tuning state, the second tuning circuit and the first antenna radiator are connected through the switching switch.

3. The signal receiving path according to claim 2, characterized in that: The RF signal within the target frequency band also includes a RF signal in a third working frequency band. When the first tuner is in a third tuning state, the first antenna radiator receives the electromagnetic wave signal in the third working frequency band and converts it into a RF signal in the third working frequency band and transmits it to the first filter.

4. The signal receiving path according to claim 3, characterized in that: The first tuner also includes a third tuning circuit, and the switching switch is also electrically connected to the third tuning circuit. The impedance value of the third tuning circuit is different from the impedance value of the first tuning circuit, and the impedance value of the third tuning circuit is different from the impedance value of the second tuning circuit. When the first tuner is in the third tuning state, the third tuning circuit and the first antenna radiator are connected through the switching switch.

5. A communication module, characterized in that: It includes a radio frequency transceiver path and a signal receiving path as described in any one of claims 1 to 4, the radio frequency transceiver path includes a power amplifier, a second low noise amplifier, a second filter, a second tuner and a second antenna radiator, the second filter is electrically connected to the power amplifier, the second low noise amplifier and the second antenna radiator, the second filter is used to filter out stray signals in the radio frequency signal transmitted between the power amplifier and the second antenna radiator, and is used to filter out stray signals in the radio frequency signal transmitted between the power amplifier and the second low noise amplifier, and the second tuner is electrically connected to the second antenna radiator and is used to tune the working frequency band of the second antenna radiator.

6. The communication module according to claim 5, characterized in that: There are multiple signal receiving paths, and the communication module also includes a RF transceiver, a first RF receiver and a second RF receiver. The RF transceiver is electrically connected to the power amplifier and the second low-noise amplifier, the first RF receiver is electrically connected to a first low-noise amplifier of the signal receiving path, and the second RF receiver is electrically connected to the first low-noise amplifiers of the remaining signal receiving paths.

7. An electronic device, characterized in that: It comprises a shell, a circuit board and the signal receiving path according to any one of claims 1 to 4, wherein the first low-noise amplifier, the first filter and the first tuner are arranged on the circuit board, and the first antenna radiator is arranged on the shell.

8. A signal receiving method, characterized in that: include: Controlling the first tuner to be in a first tuning state, so that the first antenna radiator receives the electromagnetic wave signal of the first working frequency band and converts it into a radio frequency signal of the first working frequency band and transmits it to the first filter, so that the first filter passes the radio frequency signal within the target frequency band and filters out the radio frequency signal outside the target frequency band and then transmits it to the first low noise amplifier; Control the first tuner to be in a second tuning state, so that the first antenna radiator receives the electromagnetic wave signal of the second working frequency band and converts it into a radio frequency signal of the second working frequency band and transmits it to the first filter, so that the first filter passes the radio frequency signal within the target frequency band and filters out the radio frequency signal outside the target frequency band and then transmits it to the first low-noise amplifier.

9. The signal receiving method according to claim 8, characterized in that: The controlling the first tuner to be in a first tuning state comprises: Controlling the first tuning circuit and the first antenna radiator to be turned on by switching the switch; The controlling the first tuner to be in the second tuning state comprises: The second tuning circuit and the first antenna radiator are controlled to be connected via the switching switch.

10. The signal receiving method according to claim 9, characterized in that: The signal receiving method further comprises: Control the first tuner to be in a third tuning state, so that the first antenna radiator receives the electromagnetic wave signal of the third working frequency band and converts it into a radio frequency signal of the third working frequency band and transmits it to the first filter, so that the first filter passes the radio frequency signal within the target frequency band and filters out the radio frequency signal outside the target frequency band and then transmits it to the first low-noise amplifier.

11. The signal receiving method according to claim 9, characterized in that: The controlling the first tuner to be in a third tuning state comprises: The third tuning circuit and the first antenna radiator are controlled to be connected via the switching switch.

12. A signal receiving device, characterized in that: include: A first processing unit is used to control the first tuner to be in a first tuning state, so that the first antenna radiator receives the electromagnetic wave signal of the first working frequency band and converts it into a radio frequency signal of the first working frequency band and transmits it to the first filter, so that the first filter passes the radio frequency signal within the target frequency band and filters out the radio frequency signal outside the target frequency band and then transmits it to the first low noise amplifier; The second processing unit is used to control the first tuner to be in a second tuning state, so that the first antenna radiator receives the electromagnetic wave signal of the second working frequency band and converts it into a radio frequency signal of the second working frequency band and transmits it to the first filter, so that the first filter passes the radio frequency signal within the target frequency band and filters out the radio frequency signal outside the target frequency band and then transmits it to the first low-noise amplifier.

13. A storage medium, characterized in that: A computer program is stored, and when the computer program is executed by a processor, the signal receiving method according to any one of claims 8 to 11 is implemented.

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