Radio frequency circuit, antenna assembly and electronic equipment

Abstract

The utility model relates to a radio frequency circuit, an antenna assembly and electronic equipment. The radio frequency circuit comprises: a radio frequency transceiver circuit, a first end of which is used for receiving a first frequency band signal and a second end of which is used for receiving a second frequency band signal; the first end of the switching circuit is used for being electrically connected with the antenna radiator, the second end of the switching circuit is electrically connected with the first end of the radio frequency transceiving circuit, and the third end of the switching circuit is electrically connected with the second end of the radio frequency transceiving circuit and used for transmitting radio frequency signals emitted by the antenna radiator to the first end or the second end of the radio frequency transceiving circuit; or the radio frequency signals are shunted and then transmitted to the first end and the second end of the radio frequency transceiving circuit, and the radio frequency signals comprise the first frequency band signals and the second frequency band signals. According to the radio frequency circuit, carrier aggregation of any two frequency bands is realized through a shunt function of the multiplexing switch circuit, and a shunt and a low-noise amplifier do not need to be additionally arranged, so that the complexity of the radio frequency circuit structure and the cost of the radio frequency circuit are reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of communication technology, and in particular, to a radio frequency circuit, an antenna assembly, and an electronic device. BACKGROUND

[0002] With the development of communication technology, a radio frequency circuit can realize the communication function of an electronic device by transmitting radio frequency signals between the radio frequency circuit and an antenna radiator. However, since the radio frequency signals received by the radio frequency circuit include signals of multiple frequency bands, a large number of electrical devices are needed to process the signals, resulting in a complex structure of the radio frequency circuit. SUMMARY

[0003] To overcome the problems in the related art, the present disclosure provides a radio frequency circuit, an antenna assembly, and an electronic device.

[0004] According to a first aspect of the present disclosure, a radio frequency circuit is provided, comprising:

[0005] a radio frequency transceiver circuit, a first end of the radio frequency transceiver circuit being configured to receive a first frequency band signal, and a second end of the radio frequency transceiver circuit being configured to receive a second frequency band signal;

[0006] a switch circuit, a first end of the switch circuit being configured to be electrically connected to an antenna radiator, a second end of the switch circuit being electrically connected to the first end of the radio frequency transceiver circuit, and a third end of the switch circuit being electrically connected to the second end of the radio frequency transceiver circuit, the switch circuit being configured to transmit a radio frequency signal emitted by the antenna radiator to the first end or the second end of the radio frequency transceiver circuit, or transmit the radio frequency signal to the first end and the second end of the radio frequency transceiver circuit after splitting the radio frequency signal, the radio frequency signal including the first frequency band signal and the second frequency band signal.

[0007] In this embodiment, by multiplexing the splitting function of the switch circuit, carrier aggregation of any two frequency bands is realized, without the need for additional splitters and low-noise amplifiers, thereby reducing the complexity of the structure of the radio frequency circuit and the cost of the radio frequency circuit.

[0008] In some embodiments of the present disclosure, the number of the first end and the second end of the radio frequency transceiver circuit is multiple; and the switch circuit comprises:

[0009] a first switch unit, a fixed end of the first switch unit being configured to be electrically connected to the antenna radiator, and each first selection end of the first switch unit being electrically connected to one first end of the radio frequency transceiver circuit;

[0010] A second switch unit, a fixed end of the second switch unit is configured to be electrically connected with the second selection end of the first switch unit, and each selection end of the second switch unit is respectively electrically connected with a second end of the radio frequency transceiver circuit.

[0011] In the embodiment, the radio frequency signals are transmitted by the first switch unit and the second switch unit respectively, so that the mutual interference between the first frequency band signal and the second frequency band signal is avoided, and the reliability of the radio frequency circuit is further improved.

[0012] In some embodiments of the present disclosure, the first switch unit comprises a single-pole four-throw switch; and / or, the second switch unit comprises a single-pole double-throw switch; and / or, the first frequency band signal is a high frequency band signal, and the second frequency band signal is a medium frequency band signal.

[0013] In the embodiment, by multiplexing the shunt function of the single-pole four-throw switch, the radio frequency signal can be selectively transmitted to the first end and / or the second end of the radio frequency transceiver circuit to meet the communication requirements of the radio frequency transceiver circuit in different frequency bands, thereby improving the reliability of the radio frequency circuit. The single-pole double-throw switch can selectively transmit the radio frequency signal to the radio frequency transceiver circuit to meet the communication requirements of the radio frequency transceiver circuit in the second frequency band, thereby improving the reliability of the radio frequency circuit.

[0014] In some embodiments of the present disclosure, a fourth end of the switch circuit is electrically connected with a third end of the radio frequency transceiver circuit, and the switch circuit is further configured to transmit the radio frequency signal to the third end of the radio frequency transceiver circuit, the third end of the radio frequency transceiver circuit is configured to receive a third frequency band signal, and the radio frequency signal comprises the third frequency band signal.

[0015] In the embodiment, the radio frequency signal is transmitted to the third end of the radio frequency transceiver circuit by the switch circuit, and the radio frequency transceiver circuit can receive the third frequency band signal to cover the processing of the full frequency band signal, thereby improving the reliability of the radio frequency circuit.

[0016] In some embodiments of the present disclosure, the number of the third ends of the radio frequency transceiver circuit is plural; and the switch circuit further comprises:

[0017] A third switch unit, a fixed end of the third switch unit is configured to be electrically connected with the antenna radiator, and each first selection end of the third switch unit is respectively electrically connected with a third end of the radio frequency transceiver circuit, and the third switch unit is configured to transmit the radio frequency signal to a third end of the radio frequency transceiver circuit.

[0018] In the embodiment, the third frequency band signal is transmitted by the third switch unit, so that the mutual interference between the third frequency band signal and the first frequency band signal and the second frequency band signal is avoided, and the reliability of the radio frequency circuit is improved.

[0019] In some embodiments of the present disclosure, the third switch unit is electrically connected between the first switch unit and the antenna radiator; a second selection end of the third switch unit is electrically connected with a fixed end of the first switch unit, and the third switch unit is configured to transmit the radio frequency signal to a third end of the radio frequency transceiver circuit or the fixed end of the first switch unit, or transmit the radio frequency signal to the third end of the radio frequency transceiver circuit and the fixed end of the first switch unit after branching.

[0020] In the present embodiment, the branching function of the third switch unit is multiplexed, and a branching device is not required to be arranged between the third switch unit, the first switch unit and the antenna radiator, thereby reducing the complexity of the radio frequency circuit structure and the cost of the radio frequency circuit.

[0021] In some embodiments of the present disclosure, the third switch unit comprises a single-pole eight-throw switch; and / or the third frequency band signal is a low frequency band signal.

[0022] In the present embodiment, the branching function of the single-pole eight-throw switch is multiplexed, and the radio frequency signal can be selectively transmitted to the first end, the second end and / or the third end of the radio frequency transceiver circuit to meet the communication requirements of the radio frequency transceiver circuit in different frequency bands, thereby improving the reliability of the radio frequency circuit.

[0023] In some embodiments of the present disclosure, the radio frequency circuit further comprises:

[0024] a branching device, which is electrically connected between the first switch unit, the third switch unit and the antenna radiator; a first end of the branching device is configured to be electrically connected with the antenna radiator, a second end of the branching device is electrically connected with a fixed end of the first switch unit, and a third end of the branching device is electrically connected with a fixed end of the third switch unit, and the branching device is configured to transmit the radio frequency signal to the fixed end of the first switch unit and the fixed end of the third switch unit after branching.

[0025] In the present embodiment, the branching device is configured to filter part of the radio frequency signal as the third frequency band signal to be transmitted to the third end of the radio frequency transceiver circuit, and filter another part of the radio frequency signal as the first frequency band signal and / or the second frequency band signal to be transmitted to the first end and / or the second end of the radio frequency transceiver circuit to realize the carrier aggregation function, thereby improving the reliability of the radio frequency circuit.

[0026] In some embodiments of the present disclosure, the radio frequency circuit further comprises:

[0027] a first matching circuit, which is electrically connected between the antenna radiator and the first end of the switch circuit;

[0028] a second matching circuit electrically connected between the second end of the switch circuit and the first end of the radio frequency transceiver circuit;

[0029] a third matching circuit electrically connected between the third end of the switch circuit and the second end of the radio frequency transceiver circuit.

[0030] In the embodiment, the first matching circuit, the second matching circuit and the third matching circuit are arranged to perform impedance matching between the antenna radiator and the switch circuit and between the switch circuit and the radio frequency transceiver circuit, respectively, thereby improving the performance of the radio frequency circuit.

[0031] In some embodiments of the present disclosure, the radio frequency circuit further comprises:

[0032] a first filter circuit electrically connected between the second end of the switch circuit and the first end of the radio frequency transceiver circuit, the first filter circuit being configured to filter out a third frequency band signal from the second frequency band signal and the radio frequency signal;

[0033] a second filter circuit electrically connected between the third end of the switch circuit and the second end of the radio frequency transceiver circuit, the second filter circuit being configured to filter out the first frequency band signal and the third frequency band signal.

[0034] In the embodiment, the first filter circuit and the second filter circuit are arranged to transmit the first frequency band signal and the second frequency band signal from different transmission paths to the radio frequency transceiver circuit, respectively, thereby avoiding mutual interference between the first frequency band signal and the second frequency band signal and improving the reliability of the radio frequency circuit.

[0035] According to a second aspect of the present disclosure, there is provided an antenna assembly comprising the radio frequency circuit as described above.

[0036] According to a third aspect of the present disclosure, there is provided an electronic device comprising the antenna assembly as described above.

[0037] The technical solutions provided by the embodiments of the present disclosure can have the following beneficial effects:

[0038] The radio frequency circuit comprises a radio frequency transceiver circuit and a switch circuit, the switch circuit being electrically connected between the first end and the second end of the radio frequency transceiver circuit and the antenna radiator, and being configured to transmit or split the radio frequency signal emitted by the antenna radiator to the radio frequency transceiver circuit. By multiplexing the splitting function of the switch circuit, carrier aggregation of any two frequency bands is realized, without the need for additional splitters and low-noise amplifiers, thereby reducing the complexity of the structure of the radio frequency circuit and the cost of the radio frequency circuit.

[0039] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0040] The accompanying drawings, which are incorporated into and form part of the specification, illustrate an embodiment consistent with the present application and, together with the description, serve to explain the principles of the application.

[0041] Figure 1 is a structural schematic diagram of a radio frequency circuit;

[0042] Figure 2 is a structural schematic diagram of a radio frequency circuit provided by an exemplary embodiment of the present disclosure;

[0043] Figure 3 is a structural schematic diagram of a radio frequency circuit provided by another exemplary embodiment of the present disclosure;

[0044] Figure 4 is a structural schematic diagram of a radio frequency circuit provided by another exemplary embodiment of the present disclosure;

[0045] Figure 5 is a structural schematic diagram of a radio frequency circuit provided by another exemplary embodiment of the present disclosure;

[0046] Figure 6 is a structural schematic diagram of a radio frequency circuit provided by another exemplary embodiment of the present disclosure;

[0047] Figure 7 is a system block diagram of an electronic device provided by an exemplary embodiment of the present disclosure.

[0048] In the drawings:

[0049] 10 - radio frequency transceiver circuit; 20 - switch circuit; 21 - first switch unit; 22 - second switch unit; 23 - third switch unit; 30 - antenna radiator; 40 - splitter; 51 - first matching circuit; 52 - second matching circuit; 53 - third matching circuit; 54 - fourth matching circuit; 55 - fifth matching circuit; 56 - sixth matching circuit; 61 - first filter circuit; 62 - second filter circuit; 63 - third filter circuit; 64 - fourth filter circuit; 70 - control circuit; 400 - electronic device; 402 - processing component; 404 - memory; 406 - power supply component; 408 - multimedia component; 410 - audio component; 412 - input / output interface; 414 - sensor component; 416 - communication component; 420 - processor; K1 - single pole four throw switch; K2 - single pole double throw switch; K3 - single pole eight throw switch; LNA - low noise amplifier; D1 - first splitter; D2 - second splitter; F1 - first filter; F2 - second filter; F3 - third filter. DETAILED DESCRIPTION

[0050] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description herein relates to the drawings, in which the same numbers represent the same or similar elements, unless otherwise represented. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims. It is to be understood that the terminology "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0051] With the development of communication technology, the radio frequency circuit can realize the communication function of the electronic device by transmitting radio frequency signals between the antenna radiator. Because the transmission rates of radio frequency signals of different frequency bands are different, different communication functions can be supported. For example, the signal of the 2G frequency band supports voice communication, short message service and low-speed data transmission functions. The signal of the 3G frequency band supports voice communication, short message service, video call and mobile Internet browsing functions. The signal of the 4G frequency band supports high-definition video transmission, high-speed Internet access and real-time application functions. The signal of the 5G frequency band supports ultra-high-definition video transmission and immersive games. Because the radio frequency circuit supports the simultaneous sending and receiving of signals of multiple frequency bands (i.e., the carrier aggregation function), the quality of communication of the electronic device can be improved.

[0052] In the related art, a radio frequency circuit is provided, such as Figure 1As shown, the radio frequency circuit includes a radio frequency transceiver circuit 10, a switch circuit 20, a low noise amplifier LNA, a first filter F1, a second filter F2, a third filter F3, a first shunt D1 and a second shunt D2. The switch circuit 20 includes a single pole four throw switch K1, a single pole double throw switch K2 and a single pole eight throw switch K3. A first end of the first shunt D1 is configured to be electrically connected with an antenna radiator 30, a second end of the first shunt D1 is electrically connected with a first end of the second shunt D2, and a third end of the first shunt D1 is electrically connected with a fixed end of the single pole four throw switch K1. Each selection end of the single pole four throw switch K1 is electrically connected with the radio frequency transceiver circuit 10 through a first filter F1 and a low noise amplifier LNA respectively. A second end of the second shunt D2 is electrically connected with a fixed end of the single pole double throw switch K2, and a third end of the second shunt D2 is electrically connected with a fixed end of the single pole eight throw switch K3. Each selection end of the single pole double throw switch K2 is electrically connected with the radio frequency transceiver circuit 10 through a second filter F2 and a low noise amplifier LNA respectively. Each selection end of the single pole eight throw switch K3 is electrically connected with the radio frequency transceiver circuit 10 through a third filter F3. Among them, the first filter F1 is configured to filter low frequency band signals and intermediate frequency band signals, the second filter F2 is configured to filter low frequency band signals and high frequency band signals, and the third filter F3 is configured to filter intermediate frequency band signals and high frequency band signals. Through the first shunt D1 and the second shunt D2, the carrier aggregation function can be realized. Since the insertion loss of the first shunt D1 is large, the transmission quality of the high frequency band signals and the intermediate frequency band signals is affected, and a low noise amplifier LNA needs to be arranged between the single pole four throw switch K1 and the radio frequency transceiver circuit 10 and between the single pole double throw switch K2 and the radio frequency transceiver circuit 10 respectively to improve the transmission quality of the signals. Since multiple shunts and multiple low noise amplifiers LNA are arranged in the radio frequency circuit, the structure of the radio frequency circuit is complex, and the cost of the radio frequency circuit is high.

[0053] Based on this, the present disclosure provides a radio frequency circuit, which multiplexes the shunt function of the switch circuit, does not need to arrange a first shunt and a low noise amplifier, and reduces the complexity of the structure of the radio frequency circuit and the cost of the radio frequency circuit.

[0054] An example embodiment of the present disclosure provides a radio frequency circuit, as shown in Figure 2As shown, the radio frequency circuit includes a radio frequency transceiver 10 and a switch circuit 20. A first end of the radio frequency transceiver 10 is configured to receive a first frequency band signal, and a second end of the radio frequency transceiver 10 is configured to receive a second frequency band signal. A first end of the switch circuit 20 is configured to be electrically connected to the antenna radiator 30, a second end of the switch circuit 20 is electrically connected to the first end of the radio frequency transceiver 10, and a third end of the switch circuit 20 is electrically connected to the second end of the radio frequency transceiver 10. The switch circuit 20 is configured to transmit the radio frequency signal emitted by the antenna radiator 30 to the first end or the second end of the radio frequency transceiver 10, or split and transmit the radio frequency signal to the first end and the second end of the radio frequency transceiver 10. The radio frequency signal includes the first frequency band signal and the second frequency band signal.

[0055] In this embodiment, the radio frequency circuit includes a radio frequency transceiver and a switch circuit. The switch circuit is electrically connected between the first end and the second end of the radio frequency transceiver and the antenna radiator, and is configured to transmit or split and transmit the radio frequency signal emitted by the antenna radiator to the radio frequency transceiver. By multiplexing the splitting function of the switch circuit, carrier aggregation of any two frequency bands is achieved, without the need for additional splitters and low-noise amplifiers, thereby reducing the complexity of the radio frequency circuit structure and the cost of the radio frequency circuit.

[0056] For example, the radio frequency transceiver 10 includes a radio frequency transceiver. The antenna radiator 30 can be a conductive frame of an electronic device.

[0057] In one embodiment, as shown in Figure 3 The number of the first end and the second end of the radio frequency transceiver 10 is multiple. The switch circuit 20 includes a first switch unit 21 and a second switch unit 22. The fixed end of the first switch unit 21 is configured to be electrically connected to the antenna radiator 30, and each first selection end of the first switch unit 21 is electrically connected to one first end of the radio frequency transceiver 10. The fixed end of the second switch unit 22 is configured to be electrically connected to the second selection end of the first switch unit 21, and each selection end of the second switch unit 22 is electrically connected to one second end of the radio frequency transceiver 10.

[0058] In the embodiment, the first switch unit and the second switch unit each have multiple selection terminals, the multiple first selection terminals of the first switch unit can selectively transmit the radio frequency signal containing the first frequency band signal to any first terminal of the radio frequency transceiver circuit, and the multiple selection terminals of the second switch unit can selectively transmit the radio frequency signal containing the second frequency band signal to any second terminal of the radio frequency transceiver circuit. The first switch unit and the second switch unit can transmit the radio frequency signal to any first terminal and / or second terminal of the radio frequency transceiver circuit according to requirements, thereby improving the reliability of the radio frequency circuit. Moreover, the first switch unit and the second switch unit respectively transmit the radio frequency signal, which can avoid mutual interference between the first frequency band signal and the second frequency band signal, thereby further improving the reliability of the radio frequency circuit.

[0059] For example, the multiple first terminals of the radio frequency transceiver circuit 10 can respectively receive different first frequency band signals, and the multiple second terminals of the radio frequency transceiver circuit 10 can respectively receive different second frequency band signals, so as to realize the receiving function of the radio frequency transceiver circuit 10 to different frequency band signals.

[0060] In an embodiment, the first switch unit 21 is configured to transmit the radio frequency signal to one first terminal of the radio frequency transceiver circuit 10 or the fixed terminal of the second switch unit 22, or split the radio frequency signal and then transmit the split radio frequency signal to one first terminal of the radio frequency transceiver circuit 10 and the fixed terminal of the second switch unit 22. The second switch unit 22 is configured to transmit the received radio frequency signal to one second terminal of the radio frequency transceiver circuit 10.

[0061] In the embodiment, the splitting function of the first switch unit is multiplexed to realize carrier aggregation of any two frequency bands, without the need to set a splitter between the first switch unit, the second switch unit and the antenna radiator, and without the need to set a low noise amplifier between the first switch unit and the radio frequency transceiver circuit, thereby reducing the complexity of the radio frequency circuit structure and the cost of the radio frequency circuit.

[0062] For example, when the radio frequency transceiver circuit 10 needs to receive the first frequency band signal, the fixed terminal of the first switch unit 21 and the corresponding one first selection terminal of the first switch unit 21 are controlled to be conductive. When the radio frequency transceiver circuit 10 needs to receive the second frequency band signal, the fixed terminal of the first switch unit 21 and the second selection terminal are controlled to be conductive, and the fixed terminal of the second switch unit 22 and the corresponding one selection terminal of the second switch unit 22 are controlled to be conductive. When the radio frequency transceiver circuit 10 needs to receive the first frequency band signal and the second frequency band signal, the fixed terminal of the first switch unit 21 and the corresponding one first selection terminal of the first switch unit 21 are controlled to be conductive, and the fixed terminal of the first switch unit 21 and the second selection terminal, and the fixed terminal of the second switch unit 22 and the corresponding one selection terminal of the second switch unit 22 are controlled to be conductive.

[0063] Exemplarily, when the radio frequency transceiver circuit 10 needs to receive the first frequency band signal and the second frequency band signal, the radio frequency signal enters the first switch unit 21 through the fixed end of the first switch unit 21. After being branched by the first switch unit 21, a part of the radio frequency signal is transmitted to a corresponding first end of the radio frequency transceiver circuit 10 through a first selection end of the first switch unit 21, so as to transmit the first frequency band signal to the first end of the radio frequency transceiver circuit 10. Another part of the radio frequency signal is transmitted to a second end of the radio frequency transceiver circuit 10 through a second selection end of the first switch unit 21, the fixed end of the second switch unit 22 and a corresponding selection end of the second switch unit 22, so as to transmit the second frequency band signal to the second end of the radio frequency transceiver circuit 10.

[0064] In an embodiment, the first switch unit 21 comprises a single-pole four-throw (SP4T) switch.

[0065] In the embodiment, by multiplexing the branching function of the single-pole four-throw switch, carrier aggregation of any two frequency bands is realized, and radio frequency signals can be selectively transmitted to the first end and / or the second end of the radio frequency transceiver circuit to meet the communication requirements of the radio frequency transceiver circuit in different frequency bands, thereby improving the reliability of the radio frequency circuit.

[0066] Exemplarily, the first switch unit 21 can also be composed of a plurality of transistors. The number of the first selection ends of the first switch unit 21 can be set according to needs.

[0067] In an embodiment, the second switch unit 22 comprises a single-pole double-throw (SP2T) switch.

[0068] In the embodiment, since the single-pole double-throw switch can selectively transmit radio frequency signals to the radio frequency transceiver circuit to meet the communication requirements of the radio frequency transceiver circuit in the second frequency band, the reliability of the radio frequency circuit is improved.

[0069] Exemplarily, the second switch unit 22 can also be composed of a plurality of transistors. The number of the selection ends of the second switch unit 22 can be set according to needs.

[0070] In an embodiment, the first frequency band signal is a high frequency band signal, and the second frequency band signal is a medium frequency band signal.

[0071] In the embodiment, in the transmission process of the radio frequency signal, the radio frequency signal is split by the splitter and filtered by the filter into a signal of a corresponding frequency band to be transmitted to the radio frequency transceiver circuit. Since the splitter has a large insertion loss problem, a low noise amplifier needs to be arranged between the first switch unit and the radio frequency transceiver circuit and between the second switch unit and the radio frequency transceiver circuit to improve the quality of signal transmission. By multiplexing the splitting function of the first switch unit with small insertion loss, carrier aggregation of any two frequency bands is realized, and the radio frequency circuit does not need to be provided with a high-cost splitter corresponding to a high-frequency frequency band signal and a medium-frequency frequency band signal and a low noise amplifier, thereby reducing the complexity of the structure of the radio frequency circuit and the cost of the radio frequency circuit.

[0072] Exemplarily, the high-frequency frequency band signal includes but is not limited to a B7 frequency band signal, a B40 frequency band signal and a B41 frequency band signal. The medium-frequency frequency band signal includes but is not limited to a B1 frequency band signal, a B2 frequency band signal and a B3 frequency band signal.

[0073] In an embodiment, the fourth end of the switch circuit 20 is electrically connected to the third end of the radio frequency transceiver circuit 10, and the switch circuit 20 is further used for transmitting the radio frequency signal to the third end of the radio frequency transceiver circuit 10. The third end of the radio frequency transceiver circuit is used for receiving a third frequency band signal, and the radio frequency signal includes the third frequency band signal.

[0074] In the embodiment, the radio frequency signal is transmitted to the third end of the radio frequency transceiver circuit through the switch circuit, and the radio frequency transceiver circuit can receive the third frequency band signal to cover the processing of the full frequency band signal, thereby improving the reliability of the radio frequency circuit.

[0075] In an embodiment, the number of the third ends of the radio frequency transceiver circuit 10 is multiple. The switch circuit 20 further includes a third switch unit. The fixed end of the third switch unit is used for being electrically connected to the antenna radiator 30, each first selection end of the third switch unit is respectively electrically connected to one third end of the radio frequency transceiver circuit 10, and the third switch unit is used for transmitting the radio frequency signal to one third end of the radio frequency transceiver circuit 10.

[0076] In the embodiment, by arranging the third switch unit, the antenna radiator can not only transmit the first frequency band signal and the second frequency band signal to the radio frequency transceiver circuit, but also transmit the third frequency band signal to the radio frequency transceiver circuit to realize the receiving function of different frequency band signals. Moreover, by transmitting the third frequency band signal through the third switch unit, the mutual interference between the third frequency band signal and the first frequency band signal and the second frequency band signal can be avoided, thereby improving the reliability of the radio frequency circuit.

[0077] In an embodiment, as shown in FIG. 1, the switch circuit 20 includes a first switch unit, a second switch unit and a third switch unit. Figure 4As shown, the third switch unit 23 is electrically connected between the first switch unit 21 and the antenna radiator 30. The second selection end of the third switch unit 23 is electrically connected with the fixed end of the first switch unit 21. The third switch unit 23 is configured to transmit the radio frequency signal to one third end of the radio frequency transceiver circuit 10 or the fixed end of the first switch unit 21, or transmit the radio frequency signal branched to one third end of the radio frequency transceiver circuit 10 and the fixed end of the first switch unit 21.

[0078] In this embodiment, by multiplexing the branching function of the third switch unit, the carrier aggregation of any two frequency bands is realized, and a splitter does not need to be arranged between the third switch unit, the first switch unit and the antenna radiator, thereby reducing the complexity of the radio frequency circuit structure and the cost of the radio frequency circuit.

[0079] Exemplarily, the switch circuit 20 described above is configured to transmit the radio frequency signal emitted by the antenna radiator 30 to the first end or the second end of the radio frequency transceiver circuit 10, or transmit the radio frequency signal branched to the first end and the second end of the radio frequency transceiver circuit 10, which means that the radio frequency signal branched by the third switch unit 23 is directly transmitted or branched.

[0080] Exemplarily, when the radio frequency transceiver circuit 10 needs to receive the first frequency band signal and / or the second frequency band signal, the fixed end of the third switch unit and the second selection end of the third switch unit 23 are conductive. When the radio frequency transceiver circuit 10 needs to receive the third frequency band signal, the fixed end of the third switch unit 23 is conductive with one first selection end of the third switch unit. When the radio frequency transceiver circuit 10 needs to receive the first frequency band signal and / or the second frequency band signal and the third frequency band signal, the fixed end of the third switch unit 23 is conductive with the first selection end and the second selection end of the third switch unit 23.

[0081] Exemplarily, when the radio frequency transceiver circuit 10 needs to receive the first frequency band signal and / or the second frequency band signal and the third frequency band signal, the radio frequency signal enters the third switch unit 23 through the fixed end of the third switch unit 23. After the radio frequency signal is branched by the third switch unit 23, part of the radio frequency signal is transmitted to the corresponding third end of the radio frequency transceiver circuit 10 through one first selection end of the third switch unit 23, so as to transmit the third frequency band signal to the third end of the radio frequency transceiver circuit 10. Another part of the radio frequency signal is transmitted to the corresponding first end and / or second end of the radio frequency transceiver circuit 10 through the first switch unit 21 and the second switch unit 22, so as to transmit the first frequency band signal and / or the second frequency band signal to the radio frequency transceiver circuit 10.

[0082] In one embodiment, the third switch unit 23 comprises a single-pole eight-throw (SP8T) switch.

[0083] In the embodiment, the shunt function of the multiplex single-pole eight-throw switch is used to realize carrier aggregation of any two frequency bands, and the radio frequency signal can be selectively transmitted to the first end, the second end and / or the third end of the radio frequency transceiver circuit to meet the communication requirements of the radio frequency transceiver circuit in different frequency bands, thereby improving the reliability of the radio frequency circuit.

[0084] The third switch unit 23 can also be composed of multiple transistors, for example.

[0085] In an embodiment, the third frequency band signal is a low frequency band signal.

[0086] In the embodiment, in the transmission process of the radio frequency signal, the radio frequency signal is filtered by the filter after being shunted by the shunt, to be a signal of a corresponding frequency band, to be transmitted to the radio frequency transceiver circuit. The shunt function of the third switch unit with small insertion loss is used to realize carrier aggregation of any two frequency bands, and the radio frequency circuit does not need to be provided with a shunt, thereby reducing the complexity of the structure of the radio frequency circuit and the cost of the radio frequency circuit.

[0087] The low frequency band signal can include, but is not limited to, a B5 frequency band signal, a B8 frequency band signal, a B20 frequency band signal and a B28 frequency band signal, for example.

[0088] In an embodiment, as shown in Figure 5 The radio frequency circuit further includes a shunt 40. The shunt 40 is electrically connected between the first switch unit 21, the third switch unit 23 and the antenna radiator 30. The first end of the shunt 40 is used to be electrically connected with the antenna radiator 30, the second end of the shunt 40 is electrically connected with the fixed end of the first switch unit 21, the third end of the shunt 40 is electrically connected with the fixed end of the third switch unit 23, and the shunt 40 is used to transmit the radio frequency signal to the first end of the first switch unit 21 and the fixed end of the third switch unit 23 after shunting.

[0089] In the embodiment, the shunt transmits the radio frequency signal emitted by the antenna radiator to the third switch unit and the first switch unit respectively, so that part of the radio frequency signal is filtered to be a third frequency band signal to be transmitted to the third end of the radio frequency transceiver circuit, and another part of the radio frequency signal is filtered to be a first frequency band signal and / or a second frequency band signal to be transmitted to the first end and / or the second end of the radio frequency transceiver circuit to realize the carrier aggregation function, thereby improving the reliability of the radio frequency circuit.

[0090] The switch circuit 20 described above is used to transmit the radio frequency signal emitted by the antenna radiator 30 to the first end or the second end of the radio frequency transceiver circuit 10, or to transmit the shunted radio frequency signal to the first end and the second end of the radio frequency transceiver circuit 10, which means that the shunted radio frequency signal of the shunt 40 is directly transmitted or shunted.

[0091] In an embodiment, the radio frequency circuit further comprises a first matching circuit, a second matching circuit and a third matching circuit. The first matching circuit is electrically connected between the antenna radiator 30 and the first end of the switch circuit 20. The second matching circuit is electrically connected between the second end of the switch circuit 20 and the first end of the radio frequency transceiver circuit 10. The third matching circuit is electrically connected between the third end of the switch circuit 20 and the second end of the radio frequency transceiver circuit 10.

[0092] In the embodiment, by setting the first matching circuit, the second matching circuit and the third matching circuit, impedance matching can be performed between the antenna radiator and the switch circuit and between the switch circuit and the radio frequency transceiver circuit respectively, thereby improving the performance of the radio frequency circuit.

[0093] Exemplarily, the first matching circuit, the second matching circuit and the third matching circuit can be composed of inductors, capacitors and the like.

[0094] In an embodiment, the radio frequency circuit comprises a first filter circuit and a second filter circuit. The first filter circuit is electrically connected between the second end of the switch circuit 20 and the first end of the radio frequency transceiver circuit 10, and the first filter circuit is used to filter out the third frequency band signal in the second frequency band signal and the radio frequency signal. The second filter circuit is electrically connected between the third end of the switch circuit 20 and the second end of the radio frequency transceiver circuit 10, and the second filter circuit is used to filter out the first frequency band signal and the third frequency band signal.

[0095] In the embodiment, the second frequency band signal and the third frequency band signal are filtered out by the first filter circuit, so as to transmit the first frequency band signal to the radio frequency transceiver circuit through the second end of the switch circuit. The first frequency band signal and the third frequency band signal are filtered out by the second filter circuit, so as to transmit the second frequency band signal to the radio frequency transceiver circuit through the first end of the switch circuit. By setting the first filter circuit and the second filter circuit, the first frequency band signal and the second frequency band signal can be transmitted to the radio frequency transceiver circuit from different transmission paths respectively, thereby avoiding mutual interference between the first frequency band signal and the second frequency band signal and improving the reliability of the radio frequency circuit.

[0096] An exemplary embodiment of the present disclosure provides a radio frequency circuit, which comprises a switch circuit 20, a radio frequency transceiver circuit 10 and an antenna radiator 30. Figure 6As shown, the radio frequency circuit includes a radio frequency transceiver circuit 10, a single-pole four-throw switch K1, a single-pole double-throw switch K2, a single-pole eight-throw switch K3, a shunt 40, a first matching circuit 51, a plurality of second matching circuits 52, a plurality of third matching circuits 53, a fourth matching circuit 54, a plurality of fifth matching circuits 55, a plurality of sixth matching circuits 56, a plurality of first filter circuits 61, a plurality of second filter circuits 62, a third filter circuit 63, a plurality of fourth filter circuits 64, and a control circuit 70. A first end of the shunt 40 is configured to be electrically connected to the antenna radiator 30, a second end of the shunt 40 is electrically connected to a fixed end of the single-pole four-throw switch K1 through the first matching circuit 51, and a third end of the shunt 40 is electrically connected to a fixed end of the single-pole eight-throw switch K3 through the fourth matching circuit 54. Each first selection end of the single-pole four-throw switch K1 is electrically connected to a first end of the radio frequency transceiver circuit 10 in sequence through the second matching circuit 52, the first filter circuit 61, and the second matching circuit 52, respectively, and a second selection end of the single-pole four-throw switch K1 is electrically connected to a fixed end of the single-pole double-throw switch K2 in sequence through the fifth matching circuit 55, the third filter circuit 63, and the fifth matching circuit 55. Each selection end of the single-pole double-throw switch K2 is electrically connected to a second end of the radio frequency transceiver circuit 10 in sequence through the third matching circuit 53, the second filter circuit 62, and the third matching circuit 53, respectively. Each first end of the single-pole eight-throw switch K3 is electrically connected to a third end of the radio frequency transceiver circuit 10 in sequence through the sixth matching circuit 56, the fourth filter circuit 64, and the sixth matching circuit 56, respectively. A fourth end of the radio frequency transceiver circuit 10 is electrically connected to the control circuit 70. The control circuit 70 is electrically connected to a control end of the single-pole four-throw switch K1, a control end of the single-pole double-throw switch K2, and a control end of the single-pole eight-throw switch K3. Among them, three first ends of the radio frequency transceiver circuit 10 are configured to receive B7 frequency band signals, B40 frequency band signals, and B41 frequency band signals, respectively. Two second ends of the radio frequency transceiver circuit 10 are configured to receive B1 / B3 frequency band signals and B2 frequency band signals, respectively. Four third ends of the radio frequency transceiver circuit 10 are configured to receive B5 frequency band signals, B8 frequency band signals, B20 frequency band signals, and B28 frequency band signals, respectively. The control circuit 70 controls the single-pole four-throw switch K1 through a communication end, such as controlling the single-pole four-throw switch K1 based on a Mobile Industry Processor Interface (MIPI) protocol. The control circuit 70 controls the single-pole double-throw switch K2 and the single-pole eight-throw switch K3 through an input / output end. The control circuit 70 includes a processor.

[0097] Exemplarily, when the radio transceiver circuit 10 needs to receive a B40 band signal, the control circuit 70 controls the fixed terminal of the single-pole four-throw switch K1 and the corresponding first selection terminal to be conductive. When the radio transceiver circuit 10 needs to receive a B1 band signal, the control circuit 70 controls the fixed terminal of the single-pole four-throw switch K1 and the second selection terminal of the single-pole four-throw switch K1 to be conductive, and controls the fixed terminal of the single-pole double-throw switch K2 and the corresponding selection terminal of the single-pole double-throw switch K2 to be conductive. When the radio transceiver circuit 10 needs to receive a B5 band signal, the control circuit 70 controls the fixed terminal of the single-pole eight-throw switch K3 and the corresponding first selection terminal of the single-pole eight-throw switch K3 to be conductive. When the radio transceiver circuit 10 needs to receive a B40 band signal and a B1 band signal, the control circuit 70 controls the fixed terminal of the single-pole four-throw switch K1 and the corresponding first selection terminal to be conductive, controls the fixed terminal of the single-pole four-throw switch K1 and the second selection terminal of the single-pole four-throw switch K1 to be conductive, and controls the fixed terminal of the single-pole double-throw switch K2 and the corresponding selection terminal of the single-pole double-throw switch K2 to be conductive. When the radio transceiver circuit 10 needs to receive a B40 band signal and a B5 band signal, the control circuit 70 controls the fixed terminal of the single-pole four-throw switch K1 and the corresponding first selection terminal to be conductive, and controls the fixed terminal of the single-pole eight-throw switch K3 and the corresponding first selection terminal of the single-pole eight-throw switch K3 to be conductive. Similarly, details are not described here.

[0098] An example embodiment of the present disclosure provides an antenna assembly, which comprises the radio frequency circuit as described above.

[0099] An example embodiment of the present disclosure provides an electronic device, which comprises the antenna assembly as described above. The electronic device is, for example, a mobile phone, a notebook computer, a tablet computer, a wearable device, and the like.

[0100] Reference Figure 7 As shown, the electronic device 400 can include one or more of the following components: a processing component 402, a memory 404, a power supply component 406, a multimedia component 408, an audio component 410, an input / output (I / O) interface 412, a sensor component 414, and a communication component 416.

[0101] The processing component 402 usually controls overall operations of the electronic device 400, such as operations associated with displaying, making phone calls, data communications, camera operations and recording operations. The processing component 402 can include one or more processors 420 to execute instructions to complete all or part of steps of the methods described above. In addition, the processing component 402 can include one or more modules so as to facilitate interactions between the processing component 402 and other components. For example, the processing component 402 can include a multimedia module to facilitate the interaction between the multimedia component 408 and the processing component 402.

[0102] The memory 404 is configured to store various types of data to support the operation of the electronic device 400. Examples of such data include instructions for any application or method operating on the electronic device 400, contact data, phonebook data, messages, pictures, videos, and the like. The memory 404 can be implemented by any type of volatile or nonvolatile memory or a combination thereof such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disc or optical disc.

[0103] The power supply component 406 supplies power for various components of the electronic device 400. The power supply component 406 can include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 400.

[0104] The multimedia component 408 includes a screen providing an output interface between the electronic device 400 and a user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes the touch panel, the screen can be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense a touch, a slide, and a gesture on the touch panel. The touch sensor can not only sense a boundary of a touching or a sliding action, but also detect duration and pressure related to the touching or sliding action. In some embodiments, the multimedia component 408 includes a front camera module and / or a rear camera module. The front camera module and / or the rear camera module can receive external multimedia data when the electronic device 400 is in an operation mode such as a photographing mode or a video mode. Each of the front camera module and the rear camera module can be a fixed optical lens system or have a focal length and optical zoom capability.

[0105] The audio component 410 is configured to output and / or input an audio signal. For example, the audio component 410 includes a microphone (MIC) configured to receive an external audio signal when the electronic device 400 is in an operation mode such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 404 or transmitted via the communication component 416. In some embodiments, the audio component 410 also includes a speaker for outputting an audio signal.

[0106] The I / O interface 412 provides an interface between the processing component 402 and peripheral interface modules such as a keypad, a click wheel, buttons, and the like. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0107] The sensor component 414 includes one or more sensors for providing status assessments for various aspects of the electronic device 400. For example, the sensor component 414 can detect an open / closed position of the electronic device 400, relative positioning of components, such as a display and a keypad of the electronic device 400, a change in position of the electronic device 400 or a component of the electronic device 400, presence or absence of user contact with the electronic device 400, orientation or acceleration / deceleration / g-force and temperature changes of the electronic device 400. The sensor component 414 can include an accelerometer for measuring a change in momentum of the electronic device 400. The sensor component 414 can further include a proximity sensor configured to detect presence of nearby objects without any physical contact. The sensor component 414 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 414 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0108] The communication component 416 is configured to facilitate wired or wireless communication between the electronic device 400 and another terminal. The electronic device 400 can access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G, 5G, or a combination thereof. In an example embodiment, the communication component 416 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an example embodiment, the communication component 416 can further include a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) techniques, infrared data association (IrDA) techniques, ultra-wideband (UWB) techniques, Bluetooth (BT) techniques, and other techniques.

[0109] In an example embodiment, the electronic device 400 can be implemented using one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing terminals (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic elements.

[0110] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the disclosure. Illustrative expressions of the above terms do not necessarily refer to the same embodiment or example in the specification. Also, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples, without contradiction.

[0111] In addition, the terms "first", "second", are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the disclosure, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0112] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. The disclosure is intended to cover any variations, uses, or adaptations of the disclosure following the general principles thereof and including such departures from the present disclosure that come within known use or custom in the art to which the disclosure pertains. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the disclosure are indicated by the following claims.

[0113] It should be understood that the present disclosure is not limited to the precise structures described and shown in the drawings above, and that various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the claims appended hereto.

Claims

1. A radio frequency circuit, characterized by The radio frequency circuit comprises: The radio frequency transceiver circuit comprises: The switch circuit comprises:

2. The radio frequency circuit of claim 1, wherein, The switch circuit comprises: The first switch unit comprises a single-pole four-throw switch; and / or, the second switch unit comprises a single-pole double-throw switch; and / or, the first frequency band signal is a high frequency band signal, and the second frequency band signal is a medium frequency band signal. The fourth end of the switch circuit is electrically connected with the third end of the radio frequency transceiver circuit, and the switch circuit is further used for transmitting the radio frequency signal to the third end of the radio frequency transceiver circuit.

3. The radio frequency circuit of claim 2, wherein, The third end of the radio frequency transceiver circuit comprises a plurality of third ends; and the switch circuit further comprises:

4. The radio frequency circuit of claim 2, wherein, The third switch unit is electrically connected between the first switch unit and the antenna radiator; the second selection end of the third switch unit is electrically connected with the fixed end of the first switch unit, and the third switch unit is used for transmitting the radio frequency signal to one third end of the radio frequency transceiver circuit or the fixed end of the first switch unit, or transmitting the radio frequency signal to one third end of the radio frequency transceiver circuit and the fixed end of the first switch unit after branching.

5. The radio frequency circuit of claim 4, wherein, The third switch unit comprises a single-pole eight-throw switch; and / or, the third frequency band signal is a low frequency band signal. The radio frequency circuit further comprises:

6. The radio frequency circuit of claim 5, wherein, ​ 7. The radio frequency circuit of claim 5, wherein, ​ 8. The radio frequency circuit of claim 5, wherein, ​ A shunt is electrically connected between the first switch unit, the third switch unit and the antenna radiator; a first end of the shunt is configured to be electrically connected to the antenna radiator, a second end of the shunt is electrically connected to the fixed end of the first switch unit, and a third end of the shunt is electrically connected to the fixed end of the third switch unit; the shunt is configured to split the radio frequency signal and transmit the radio frequency signal to the fixed end of the first switch unit and the fixed end of the third switch unit.

9. The radio frequency circuit of any of claims 1 to 8, wherein, The radio frequency circuit further comprises: A first matching circuit is electrically connected between the antenna radiator and the first end of the switch circuit; A second matching circuit is electrically connected between the second end of the switch circuit and the first end of the radio frequency transceiver circuit; A third matching circuit is electrically connected between the third end of the switch circuit and the second end of the radio frequency transceiver circuit.

10. The radio frequency circuit of any one of claims 1 to 8, wherein, The radio frequency circuit further comprises: A first filter circuit is electrically connected between the second end of the switch circuit and the first end of the radio frequency transceiver circuit, and the first filter circuit is configured to filter out a third frequency band signal from the second frequency band signal and the radio frequency signal; A second filter circuit is electrically connected between the third end of the switch circuit and the second end of the radio frequency transceiver circuit, and the second filter circuit is configured to filter out the first frequency band signal and the third frequency band signal.

11. An antenna assembly, characterized by The antenna assembly comprises the radio frequency circuit according to any one of claims 1 to 10.

12. An electronic device, comprising: The electronic device comprises the antenna assembly according to claim 11.

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