Radio frequency circuit and communication equipment

Abstract

The utility model relates to a radio frequency circuit and communication equipment. The radio frequency circuit comprises a chip transceiving assembly, a power divider and an antenna transceiving assembly, the chip transmit-receive assembly comprises a signal bidirectional transmission end. The two-way signal transmission ends are connected with the input ends of the power dividers in a one-to-one correspondence manner; the output ends of the power divider are respectively connected with different antenna transmit-receive assemblies. Thus, distribution of signal power is realized by using the power dividers, the power of signals received by the antenna transmit-receive assemblies corresponding to the power dividers is reduced, the sum of the power of the signals radiated by the antenna transmit-receive assemblies in the free space is high, and a good signal coverage range is ensured while the SAR authentication standard is met.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a radio frequency circuit and a communication device. Background Art

[0002] The Specific Absorption Rate (SAR) is the electromagnetic wave energy absorption ratio of communication products. For example, under the action of an external electromagnetic field, an induced electromagnetic field will be generated in the human body. Since various organs of the human body are lossy media, the electromagnetic field in the body will generate current, resulting in the absorption and dissipation of electromagnetic energy. The higher the transmission power of the communication product, the higher the SAR, and the more harm it will cause to the human body. Therefore, communication products must undergo SAR qualification testing and be determined to meet SAR certification standards before they can be sold on the market.

[0003] At present, the wireless fidelity (WIFI) circuits of related wireless communication products generally adopt a dual-antenna design solution, so that each antenna radiates electromagnetic waves of a certain power. When the SAR certification exceeds the standard, it is usually met by reducing the maximum transmission power radiated by the circuit. However, this method will cause the signal coverage range to become narrower, thereby reducing the user experience. Utility Model Content

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a radio frequency circuit and a communication device.

[0005] The present disclosure provides a radio frequency circuit, comprising: a chip transceiver component, a power divider and an antenna transceiver component; the chip transceiver component comprises a signal bidirectional transmission end;

[0006] The signal bidirectional transmission end is connected to the input end of the power divider in a one-to-one correspondence; each output end of the power divider is connected to a different antenna transceiver component;

[0007] The chip transceiver component is at least used to transmit signals of a preset frequency band, the power divider is used to divide the signals of the preset frequency band into multiple paths and output them to the corresponding antenna transceiver components, and the antenna transceiver component is at least used to radiate the received signals outward.

[0008] Optionally, the number of the antenna transceiver components and the number of the power dividers are four; the four antenna transceiver components include a first antenna transceiver component, a second antenna transceiver component, a third antenna transceiver component and a fourth antenna transceiver component, and the four power dividers include a first power divider, a second power divider, a third power divider and a fourth power divider;

[0009] An output end of the first power divider and an output end of the third power divider are both connected to the first antenna transceiver component, another output end of the first power divider and another output end of the third power divider are both connected to the second antenna transceiver component, an output end of the second power divider and an output end of the fourth power divider are both connected to the third antenna transceiver component, and another output end of the second power divider and another output end of the fourth power divider are both connected to the fourth antenna transceiver component.

[0010] Optionally, the antenna transceiver assembly includes a combiner, a test socket and an antenna;

[0011] Each input end of the combiner is connected to the corresponding power divider, and the output end of the combiner is connected to the antenna through the test socket;

[0012] The combiner is used to combine the received signals into one channel and output it to the corresponding antenna to radiate outward.

[0013] Optionally, the chip transceiver component includes a WIFI transceiver chip, a first type power amplifier and a second type power amplifier; the preset frequency band includes at least a first frequency band and a second frequency band;

[0014] The first power divider and the second power divider are respectively connected to the WIFI transceiver chip via a first-type power amplifier, and the third power divider and the fourth power divider are respectively connected to the WIFI transceiver chip via a second-type power amplifier;

[0015] The WIFI transceiver chip is used for signal transmission and signal reception; the first type of power amplifier is used for power amplification of signals in the first frequency band, and the second type of power amplifier is used for power amplification of signals in the second frequency band.

[0016] Optionally, a second frequency band filter is also included;

[0017] The third power divider and the fourth power divider are respectively connected to the second type power amplifier through a second frequency band filter;

[0018] The second frequency band filter is used to filter out signals outside the second frequency band.

[0019] Optionally, the WIFI transceiver chip includes a first frequency band transmitting port, a first frequency band receiving port, a second frequency band transmitting port and a second frequency band receiving port;

[0020] The first frequency band transmitting port is connected to the input end of the first type power amplifier, and the first frequency band receiving port is connected to the output end of the first type power amplifier; the second frequency band transmitting port is connected to the input end of the second type power amplifier, and the second frequency band receiving port is connected to the output end of the second type power amplifier;

[0021] The first frequency band transmitting port is used to transmit signals of the first frequency band, the first frequency band receiving port is used to receive signals of the first frequency band, the second frequency band transmitting port is used to transmit signals of the second frequency band, and the second frequency band receiving port is used to receive signals of the second frequency band.

[0022] Optionally, the first type of power amplifier has a built-in first frequency band filter;

[0023] The first frequency band filter is used to filter out signals outside the first frequency band.

[0024] Optionally, the power divider is a two-power divider, a four-power divider or an eight-power divider;

[0025] Wherein, the number of the antenna transceiver components is greater than or equal to the number of the power dividers.

[0026] The present disclosure also provides a communication device, comprising any one of the above-mentioned radio frequency circuits.

[0027] Optionally, the communication device includes at least one of a mobile phone, a tablet, a laptop computer and a vehicle-mounted computer.

[0028] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0029] The radio frequency circuit provided by the embodiment of the present disclosure includes: a chip transceiver component, a power divider and an antenna transceiver component; the chip transceiver component includes a signal bidirectional transmission end; the signal bidirectional transmission end is connected to the input end of the power divider in a one-to-one correspondence; each output end of the power divider is respectively connected to a different antenna transceiver component; the chip transceiver component is at least used to transmit a signal of a preset frequency band, the power divider is used to divide the signal of the preset frequency band into multiple paths and output it to the corresponding antenna transceiver component, and the antenna transceiver component is at least used to radiate the received signal outward. In this way, the power of the signal is distributed by the power divider, and the power of the signal received by the corresponding antenna transceiver component is reduced, while the sum of the power of the signals radiated by each antenna transceiver component in free space is relatively high, which ensures a good signal coverage range while meeting the SAR certification standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0032] Figure 1 A structural schematic diagram of a radio frequency circuit provided for related technology;

[0033] Figure 2 A schematic diagram of the structure of a radio frequency circuit provided in an embodiment of the present disclosure;

[0034] Figure 3 A schematic diagram of the structure of another radio frequency circuit provided in an embodiment of the present disclosure;

[0035] Figure 4 A schematic diagram of the structure of another radio frequency circuit provided in an embodiment of the present disclosure.

[0036] Among them, 110, chip transceiver component; 120, power divider; 121, first power divider; 122, second power divider; 123, third power divider; 124, fourth power divider; 130, antenna transceiver component; 131, first antenna transceiver component; 132, second antenna transceiver component; 133, third antenna transceiver component; 134, fourth antenna transceiver component; 135, combiner; 136, test socket; 137, antenna; 111, WIFI transceiver chip; 112, first type power amplifier; 113, second type power amplifier; 140, second frequency band filter. DETAILED DESCRIPTION

[0037] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0039] First, the related art and its defects, as well as the solutions of the embodiments of the present disclosure proposed to improve the related art and its defects are briefly described.

[0040] For example, Figure 1 A schematic diagram of a radio frequency circuit structure provided for related technologies. Figure 1The radio frequency circuit (or simply the circuit) includes a WIFI transceiver chip 111, a first type power amplifier 112, a second type power amplifier 113, a second frequency band filter 140, a combiner 135, a test socket 136, and an antenna 137. The WIFI transceiver chip 111 is connected to a combiner 135 through a first type power amplifier 112 and a second type power amplifier 113, and is connected to another combiner 135 through another first type power amplifier 112 and another second type power amplifier 113, and the second frequency band filter 140 is connected between the second type power amplifier 113 and the combiner 135.

[0041] Specifically, the signal output by the WIFI transceiver chip 111 is amplified by the first type power amplifier 112 and the second type power amplifier 113, and then combined by the combiner 135, and then the corresponding antenna 137 radiates the combined signal outward. Based on this circuit architecture, if the sum of the powers of the signals radiated in free space by the two antennas 137 is high, such as: the sum of the powers reaches the target total power, although the coverage of the signal can be widened, the power of the signal received by each antenna 137 is also high, and the energy of the electromagnetic wave radiated outward by a single antenna 137 is relatively large, resulting in the circuit failing to meet the SAR certification standard. In this regard, if the total power radiated outward by the circuit (which can be regarded as the maximum transmission power) is reduced to below the target total power to meet the SAR certification standard, the coverage of the signal will be narrowed, thereby reducing the user experience.

[0042] In response to at least one of the above-mentioned defects, an embodiment of the present disclosure provides a radio frequency circuit, which realizes signal power distribution by utilizing a power divider, so that the power of the signal received by the corresponding antenna transceiver component is reduced, while the sum of the powers of the signals radiated by each antenna transceiver component in the free space is relatively high, thereby ensuring a good signal coverage range while complying with the SAR certification standards.

[0043] The radio frequency circuit and communication device provided by the embodiments of the present disclosure are exemplarily described below in conjunction with the accompanying drawings.

[0044] Figure 2 A schematic diagram of a radio frequency circuit according to an embodiment of the present disclosure is provided. Figure 2The radio frequency circuit includes: a chip transceiver component 110, a power divider 120 and an antenna transceiver component 130; the chip transceiver component 110 includes a signal bidirectional transmission terminal S1; the signal bidirectional transmission terminal S1 is connected to the input terminal of the power divider 120 in a one-to-one correspondence; each output terminal of the power divider 120 is respectively connected to a different antenna transceiver component 130; the chip transceiver component 110 is at least used to transmit a signal of a preset frequency band, the power divider 120 is used to divide the signal of the preset frequency band into multiple paths and output them to the corresponding antenna transceiver component, and the antenna transceiver component 130 is at least used to radiate the received signal outward.

[0045] The signal bidirectional transmission end S1 is a port with bidirectional transmission function. Exemplarily, the signal bidirectional transmission end S1 can support signal output, such as: the signal bidirectional transmission end S1 outputs signals to other structures such as the power divider 120, and can also support signal input, such as: the power divider 120 inputs signals to the signal bidirectional transmission end S1.

[0046] The power divider 120 is used to distribute the power of the received signal. Specifically, after the signal bidirectional transmission terminal S1 outputs the signal of the preset frequency band to the power divider 120, the power divider 120 divides one signal into multiple signals, that is, evenly distributes the power of the received signal, so that each output terminal of the power divider 120 outputs a signal of equal power, and then the corresponding antenna transceiver component 130 radiates the received signal outward, such as into free space.

[0047] For example, Figure 2 Taking the structure shown as an example, the power divider 120 may include two output terminals. On this basis, the power divider 120 divides the received signal into two, that is, the power of the signal is evenly distributed in a ratio of 1:1. In other embodiments, the power divider 120 may also include three output terminals, four output terminals, six output terminals or other numbers of output terminals, which are not limited here.

[0048] It is not difficult to understand that compared with the related art, in which the related power amplifiers such as the first type power amplifier (or the second type power amplifier) ​​directly output signals to the antenna, resulting in the defect that the energy of the electromagnetic waves radiated outward by a single antenna is relatively high, the embodiment of the present disclosure distributes the power of the signal by using the power divider 120 and then transmits it to the corresponding antenna transceiver component 130, so that the power of the signal received by each antenna transceiver component 130 is relatively reduced, indicating that the power of the signal radiated outward by each antenna transceiver component 130 is also relatively reduced, thereby achieving compliance with the SAR certification standard, and the sum of the powers of the signals radiated in free space by each antenna transceiver component 130 is relatively high, such as: the sum of the powers can reach the target total power, thereby better broadening the signal coverage range.

[0049] The radio frequency circuit provided by the embodiment of the present disclosure includes: a chip transceiver component 110, a power divider 120 and an antenna transceiver component 130; the chip transceiver component 110 includes a signal bidirectional transmission terminal S1; the signal bidirectional transmission terminal S1 is connected to the input terminal of the power divider 120 in a one-to-one correspondence; each output terminal of the power divider 120 is respectively connected to a different antenna transceiver component 130; the chip transceiver component 110 is at least used to transmit a signal of a preset frequency band, the power divider 120 is used to divide the signal of the preset frequency band into multiple paths and output it to the corresponding antenna transceiver component, and the antenna transceiver component 130 is at least used to radiate the received signal outward. In this way, the power of the signal is distributed by the power divider 120, and the power of the signal received by the corresponding antenna transceiver component 130 is reduced, while the sum of the power of the signal radiated in the free space by each antenna transceiver component 130 is high, which meets the SAR certification standard and ensures a good signal coverage range.

[0050] In some embodiments, Figure 3 A schematic diagram of another radio frequency circuit provided in an embodiment of the present disclosure. Figure 2 Based on Figure 3 , in order to better compare with the radio frequency circuit in the related art, the number of antenna transceiver components 130 and the number of power dividers 120 are four; the four antenna transceiver components 130 include a first antenna transceiver component 131, a second antenna transceiver component 132, a third antenna transceiver component 133 and a fourth antenna transceiver component 134, and the four power dividers 120 include a first power divider 121, a second power divider 122, a third power divider 123 and a fourth power divider 124; an output end of the first power divider 121 and an output end of the third power divider 123 are both connected to the first antenna transceiver component 131, another output end of the first power divider 121 and another output end of the third power divider 123 are both connected to the second antenna transceiver component 132, an output end of the second power divider 122 and an output end of the fourth power divider 124 are both connected to the third antenna transceiver component 133, and another output end of the second power divider 122 and another output end of the fourth power divider 124 are both connected to the fourth antenna transceiver component 134.

[0051] The first power divider 121 and the third power divider 123 are respectively connected to the first antenna transceiver assembly 131 and the second antenna transceiver assembly 132, and the second power divider 122 and the fourth power divider 124 are respectively connected to the third antenna transceiver assembly 133 and the fourth antenna transceiver assembly 134.

[0052] Specifically, based on the above connection relationship, the first antenna transceiver component 131 can receive one signal output by the first power divider 121 and one signal output by the third power divider 123, and the second antenna transceiver component 132 can receive another signal output by the first power divider 121 and another signal output by the third power divider 123; similarly, the third antenna transceiver component 133 can receive one signal output by the second power divider 122 and one signal output by the fourth power divider 124, and the fourth antenna transceiver component 134 can receive another signal output by the second power divider 122 and another signal output by the fourth power divider 124.

[0053] In this way, compared with the related art in which each antenna directly receives two signals, resulting in a higher energy of electromagnetic waves radiated outward by a single antenna, the embodiment of the present disclosure enables each antenna transceiver component 130 to receive the signal after power distribution by the power divider 120, thereby reducing the power of the signal received by the antenna transceiver component 130, that is, the energy of the electromagnetic waves radiated outward by the antenna transceiver component 130 is relatively low.

[0054] In some embodiments, continue to refer to Figure 3 The antenna transceiver components 130 include a combiner 135, a test socket 136 and an antenna 137; each input end of the combiner 135 is connected to the corresponding power divider 120, and the output end of the combiner 135 is connected to the antenna 137 through the test socket 136; the combiner 135 is used to combine the received signals into one path and output it to the corresponding antenna 137 to radiate outward.

[0055] The power of the signal synthesized by the combiner 135 is equal to the sum of the powers of the signals received by it. For example, taking the first antenna transceiver component 131 as an example, after the combiner 135 receives the signal output by the first power divider 121 and the signal output by the third power divider 123, it adds the powers of the two signals and outputs the synthesized signal to the corresponding connected antenna 137, so as to radiate the synthesized signal outwardly through the antenna 137.

[0056] It is not difficult to understand that Figure 3 The four power dividers 120 shown are all dual power dividers, indicating that the power of the signal output from each output end of the power divider 120 is half that of the signal input to the input end, i.e. 3 dB. The power distribution principle of the power divider 120 is exemplarily described below.

[0057] Exemplarily, if Pin represents the power of a signal input to the input end of the power divider 120, Pout1 represents the power of a signal output from one output end of the power divider 120, and Pout2 represents the power of a signal output from another output end of the power divider 120 (both power units are in mW), then the power calculation formula of the power divider 120 is as follows:

[0058] Pin=Pout1+Pout2

[0059] Since the power divider 120 is a balanced power divider, Pout1 = Pout2, and thus:

[0060] Pin=2Pout1 or Pin=2Pout2

[0061] To this end, convert the power unit mW to dBm to perform power calculation:

[0062] 10*Log(Pin)=10*Log(2Pout1)=10*Log(Pout1)+10*Log2=10*Log(Po ut1)+3dB

[0063] That is, Pin (dBm) = Pout1 (dBm) + 3dB or Pin (dBm) = Pout2 (dBm) + 3dB

[0064] Therefore, the power of the signal input to the input end of the power divider 120 is 3dB greater than the power of the signal output from the output end. Compared with the power of the signal received by each antenna when the power divider 120 is not added in the related technology, the power of the signal received by each antenna 137 in the embodiment of the present disclosure is relatively reduced by 3dB, which is equivalent to the power of the signal radiated into the free space by each antenna 137 (referred to as the radiation power) is halved, which has great benefits for SAR certification testing and enables the RF circuit to comply with SAR certification standards.

[0065] In addition, taking the first antenna transceiver component 131 and the second antenna transceiver component 132 as an example, after the two antennas 137 included in the two radiate signals outward, the power of the signals radiated outward by the two antennas 137 will be superimposed in the free space. The total power of the signals radiated outward by the two antennas 137 of the embodiment of the present disclosure = the power of the signal radiated outward by a single antenna 137 + 3dB. It can be seen that: if the sum of the powers of the signals radiated outward by each antenna of the related technology is the target total power, but cannot meet the SAR certification standard, the sum of the powers of the signals radiated in free space by each antenna of the embodiment of the present disclosure can reach the target total power, and can also improve the pass rate of the SAR certification test to meet the SAR certification standard, thereby effectively broadening the coverage range of the signal and improving the user experience.

[0066] In some embodiments, Figure 2 Based on this, continue to refer to Figure 3The chip transceiver component 110 includes a WIFI transceiver chip 111, a first type power amplifier 112 and a second type power amplifier 113; the preset frequency band includes at least a first frequency band and a second frequency band; the first power divider 120 and the second power divider 122 are respectively connected to the WIFI transceiver chip 111 through a first type power amplifier 112, and the third power divider 123 and the fourth power divider 124 are respectively connected to the WIFI transceiver chip 111 through a second type power amplifier 113; the WIFI transceiver chip 111 is used for signal transmission and signal reception; the first type power amplifier 112 is used to power amplify the signal of the first frequency band, and the second type power amplifier 113 is used to power amplify the signal of the second frequency band.

[0067] The first type power amplifier 112 and the second type power amplifier 113 both include a signal bidirectional transmission end S1 to transmit or receive a signal in a preset frequency band.

[0068] Among them, the first frequency band is the 5G frequency band, and the second frequency band is the WIFI 2.4G frequency band. Specifically, after the WIFI transceiver chip 111 outputs the signal of the 5G frequency band and the WIFI 2.4G frequency band, the first type power amplifier 112 performs power amplification on the signal of the 5G frequency band, and the second type power amplifier 113 performs power amplification on the signal of the WIFI 2.4G frequency band, thereby improving the signal strength of the 5G frequency band and the WIFI 2.4G frequency band, which is beneficial to ensure the subsequent transmission quality of the signal, such as: making the antenna 137 radiate stronger electromagnetic waves, thereby increasing the radiation range of the signal.

[0069] In addition, in practical applications, the power of the signal in the first frequency band and the power of the signal in the second frequency band can be amplified by ten to twenty times. The power amplification factors of the signal in the first frequency band and the signal in the second frequency band can be set specifically according to the signal transmission requirements of the embodiment of the present disclosure. It is only necessary to ensure good signal transmission quality, which is not limited here.

[0070] It is not difficult to understand that the signal in the embodiment of the present disclosure is specifically a WIFI signal, and the WIFI transceiver chip 111 is responsible for the modulation, demodulation and other functions of the WIFI signal. For example, after the WIFI transceiver chip 111 receives the WIFI signal, it can demodulate it to obtain the specific information of the WIFI signal; similarly, before the WIFI transceiver chip 111 transmits the WIFI signal, it can modulate the WIFI signal and then transmit the modulated WIFI signal. The specific working content of the WIFI transceiver chip 111 is not repeated nor limited.

[0071] In some embodiments, Figure 4 A schematic diagram of another radio frequency circuit provided in an embodiment of the present disclosure, in Figure 3Based on Figure 4 The RF circuit also includes a second frequency band filter 140; the third power divider 123 and the fourth power divider 124 are respectively connected to the second type power amplifier 113 through a second frequency band filter 140; the second frequency band filter 140 is used to filter out signals outside the second frequency band.

[0072] Among them, Figure 3 The structure shown is an example, Figure 3 The second type power amplifier 113 in the embodiment has a built-in (or integrated) second frequency band filter 140. Specifically, the second type power amplifier 113 uses the built-in second frequency band filter 140 to filter out signals outside the second frequency band, thereby increasing the overall design space of the RF circuit and facilitating the miniaturization design of the RF circuit.

[0073] It is understandable that Figure 4 The second type power amplifier 113 does not have a built-in second frequency band filter 140. In response to this, the embodiment of the present disclosure connects the second frequency band filter 140 between the second type power amplifier 113 and the third power divider 123, and between the second type power amplifier 113 and the fourth power divider 124, so as to filter out signals outside the second frequency band based on the external second frequency band filter 140.

[0074] Specifically, by using the second frequency band filter 140 to filter out signals outside the second frequency band, only the signals in the second frequency band can pass through, thereby suppressing interference from useless out-of-band signals and improving the stability and reliability of signal transmission.

[0075] In some embodiments, continue to refer to Figure 4 The WIFI transceiver chip 111 includes a first frequency band transmitting port T1, a first frequency band receiving port R1, a second frequency band transmitting port T2 and a second frequency band receiving port R2; the first frequency band transmitting port T1 is connected to the input end of the first type power amplifier 112, and the first frequency band receiving port R1 is connected to the output end of the first type power amplifier 112; the second frequency band transmitting port T2 is connected to the input end of the second type power amplifier 113, and the second frequency band receiving port R2 is connected to the output end of the second type power amplifier 113; the first frequency band transmitting port T1 is used to transmit a signal of the first frequency band, the first frequency band receiving port R1 is used to receive a signal of the first frequency band, the second frequency band transmitting port T2 is used to transmit a signal of the second frequency band, and the second frequency band receiving port R2 is used to receive a signal of the second frequency band.

[0076] Among them, in actual applications, the WIFI transceiver chip 111 usually includes a 5G_TX0 pin, a 5G_RX0 pin, a 5G_TX1 pin, a 5G_RX1 pin, a 2.4G_RX0 pin, a 2.4G / BT_TX0 pin, a 2.4G_RX1 pin and a 2.4G_TX1 pin.

[0077] Exemplarily, the first frequency band transmitting port T1 may include a 5G_TX0 pin and a 5G_TX1 pin, and the first frequency band receiving port R1 may include a 5G_RX0 pin and a 5G_RX1 pin; the second frequency band transmitting port T2 may include a 2.4G / BT_TX0 pin and a 2.4G_TX1 pin, and the second frequency band receiving port R2 may include a 2.4G_RX0 pin and a 2.4G_RX1 pin.

[0078] Specifically, by using the first frequency band transmitting port T1 to transmit the signal of the first frequency band, and the first frequency band receiving port R1 to receive the signal of the first frequency band, the WIFI transceiver chip 111 can transmit and receive the signal of the first frequency band; similarly, by using the second frequency band transmitting port T2 to transmit the signal of the second frequency band, and the second frequency band receiving port R2 to receive the signal of the second frequency band, the WIFI transceiver chip 111 can transmit and receive the signal of the second frequency band. In other embodiments, the WIFI transceiver chip 111 may also include transmitting ports and receiving ports for signals of other frequency bands, which are not limited here.

[0079] In some embodiments, reference Figure 3 and Figure 4 The first type power amplifier 112 has a built-in first frequency band filter (not shown in the figure); the first frequency band filter is used to filter out signals outside the first frequency band.

[0080] Specifically, the first type of power amplifier 112 integrates a first frequency band filter, which can increase the overall design space of the RF circuit and facilitate the miniaturization design of the RF circuit. At the same time, the first frequency band filter filters out signals outside the first frequency band, so that only signals in the first frequency band can pass, thereby suppressing interference from useless out-of-band signals and improving the stability and reliability of signal transmission.

[0081] In addition, the models of the first type power amplifier 112 and the second type power amplifier 113 may be set according to the requirements of the radio frequency circuit, and are not limited herein.

[0082] In some embodiments, the power divider 120 is a two-power divider, a four-power divider, or an eight-power divider; wherein the number of antenna transceiver components 130 is greater than or equal to the number of power dividers 120 .

[0083] Exemplarily, in the above embodiments, the power divider 120 is a two-power divider. In this case, the number of antenna transceiver components 130 is equal to the number of power dividers 120. In other embodiments, the power divider 120 may also be a four-power divider. Correspondingly, the number of antenna transceiver components 130 may be greater than the number of power dividers 120, such as 8 antenna transceiver components 130 to meet signal coverage requirements and SAR certification standards. There is no limitation on the number of antenna transceiver components 130 and the type of power divider 120.

[0084] On the basis of the above implementations, an embodiment of the present disclosure further provides a communication device, comprising any one of the radio frequency circuits provided in the above implementations.

[0085] Specifically, the communication device provided by the embodiment of the present disclosure can effectively reduce SAR by integrating the radio frequency circuit to meet the SAR certification standards, while also ensuring a good signal coverage range, thereby achieving wider communication coverage and improving user experience.

[0086] In some embodiments, the communication device includes at least one of a mobile phone, a tablet, a laptop computer, and a vehicle-mounted computer. In other embodiments, the communication device may also be other devices with radio frequency functions known to those skilled in the art, which are not limited here.

[0087] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0088] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A radio frequency circuit, characterized in that: include: A chip transceiver component, a power divider and an antenna transceiver component; the chip transceiver component includes a signal bidirectional transmission end; The signal bidirectional transmission end is connected to the input end of the power divider in a one-to-one correspondence; each output end of the power divider is connected to a different antenna transceiver component; The chip transceiver component is at least used to transmit signals of a preset frequency band, the power divider is used to divide the signals of the preset frequency band into multiple paths and output them to the corresponding antenna transceiver components, and the antenna transceiver component is at least used to radiate the received signals outward.

2. The radio frequency circuit according to claim 1, characterized in that: The number of the antenna transceiver components and the number of the power dividers are four; the four antenna transceiver components include a first antenna transceiver component, a second antenna transceiver component, a third antenna transceiver component and a fourth antenna transceiver component, and the four power dividers include a first power divider, a second power divider, a third power divider and a fourth power divider; An output end of the first power divider and an output end of the third power divider are both connected to the first antenna transceiver component, another output end of the first power divider and another output end of the third power divider are both connected to the second antenna transceiver component, an output end of the second power divider and an output end of the fourth power divider are both connected to the third antenna transceiver component, and another output end of the second power divider and another output end of the fourth power divider are both connected to the fourth antenna transceiver component.

3. The radio frequency circuit according to claim 2, characterized in that: The antenna transceiver assembly includes a combiner, a test socket and an antenna; Each input end of the combiner is connected to the corresponding power divider, and the output end of the combiner is connected to the antenna through the test socket; The combiner is used to combine the received signals into one channel and output it to the corresponding antenna to radiate outward.

4. The radio frequency circuit according to claim 2, characterized in that: The chip transceiver component includes a WIFI transceiver chip, a first type power amplifier and a second type power amplifier; the preset frequency band includes at least a first frequency band and a second frequency band; The first power divider and the second power divider are respectively connected to the WIFI transceiver chip via a first-type power amplifier, and the third power divider and the fourth power divider are respectively connected to the WIFI transceiver chip via a second-type power amplifier; The WIFI transceiver chip is used for signal transmission and signal reception; the first type of power amplifier is used for power amplification of signals in the first frequency band, and the second type of power amplifier is used for power amplification of signals in the second frequency band.

5. The radio frequency circuit according to claim 4, characterized in that: Also included is a second frequency band filter; The third power divider and the fourth power divider are respectively connected to the second type power amplifier through a second frequency band filter; The second frequency band filter is used to filter out signals outside the second frequency band.

6. The radio frequency circuit according to claim 4, characterized in that: The WIFI transceiver chip includes a first frequency band transmitting port, a first frequency band receiving port, a second frequency band transmitting port and a second frequency band receiving port; The first frequency band transmitting port is connected to the input end of the first type power amplifier, and the first frequency band receiving port is connected to the output end of the first type power amplifier; the second frequency band transmitting port is connected to the input end of the second type power amplifier, and the second frequency band receiving port is connected to the output end of the second type power amplifier; The first frequency band transmitting port is used to transmit signals of the first frequency band, the first frequency band receiving port is used to receive signals of the first frequency band, the second frequency band transmitting port is used to transmit signals of the second frequency band, and the second frequency band receiving port is used to receive signals of the second frequency band.

7. The radio frequency circuit according to claim 4, characterized in that: The first type of power amplifier has a built-in first frequency band filter; The first frequency band filter is used to filter out signals outside the first frequency band.

8. The radio frequency circuit according to claim 1, characterized in that: The power divider is a two-power divider, a four-power divider or an eight-power divider; Wherein, the number of the antenna transceiver components is greater than or equal to the number of the power dividers.

9. A communication device, characterized in that: The method comprises a radio frequency circuit as claimed in any one of claims 1 to 8.

10. The communication device according to claim 9, characterized in that The communication device includes at least one of a mobile phone, a tablet, a laptop computer and a vehicle-mounted computer.

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