Radio frequency system and electronic equipment

Abstract

The invention relates to a radio frequency system and electronic equipment. A first transmitting circuit in the radio frequency system is used for supporting transmitting transmission of satellite signals, a first receiving circuit is used for supporting low-noise amplification of the satellite signals, frequency ranges based on cellular signals and the satellite signals are at least partially overlapped, and at least one of a transmitting link and a receiving link of a transmitting and receiving circuit can be multiplexed based on frequency band overlapping. According to the invention, the antenna sharing of a satellite communication system and a cellular mobile communication system can be realized by using the gating circuit originally used for gating transceiving of cellular signals, and a change-over switch does not need to be additionally arranged to share the antenna. The radio frequency system is based on communication link multiplexing and gating circuit multiplexing, insertion loss can be effectively reduced, electromagnetic wave loss is reduced, and communication performance is improved. In addition, product cost can be reduced based on link multiplexing, and miniaturization design of products is facilitated.

Description

Technical Field

[0001] The present application relates to the field of radio frequency technology, and in particular to a radio frequency system and electronic equipment. Background Art

[0002] Satellite communication has the characteristics of large communication range and reliability. With the development of satellite communication technology, more technical support is provided for improving the communication performance of electronic equipment.

[0003] However, the applicant has discovered that electronic devices equipped with both a satellite signal receiver and a cellular signal receiver experience relatively large losses during communication. Summary of the invention

[0004] Based on this, it is necessary to provide a low-loss radio frequency system and electronic equipment.

[0005] In a first aspect, a radio frequency system is provided, comprising:

[0006] A first processing circuit, used for processing satellite signals;

[0007] A second processing circuit is used to process a cellular signal of a cellular mobile communication system; the frequency range of the cellular signal and the satellite signal at least partially overlaps;

[0008] a first transmitting circuit, connected to the first processing circuit, for supporting power amplification of the satellite signal to be transmitted from the antenna;

[0009] A first receiving circuit, connected to the first processing circuit, for supporting low noise amplification of satellite signals received from the antenna;

[0010] A transceiver circuit, the transceiver circuit including a transmission link and a reception link connected to the second processing circuit, the transceiver circuit supporting the transmission and reception of cellular signals;

[0011] A gating circuit, the gating circuit is connected to the transmitting link, the receiving link and the antenna respectively, and is used to selectively connect the transmitting link and the antenna, or connect the receiving link and the antenna;

[0012] Among them, at least one of the first transmitting circuit and the first receiving circuit is connected to a target link in the transceiver circuit to support the transmission of satellite signals; wherein the target link is at least one of the transmitting link and the receiving link.

[0013] In a second aspect, an electronic device is provided, comprising the above-mentioned radio frequency system.

[0014] The above-mentioned radio frequency system and electronic equipment, the first transmitting circuit in the radio frequency system is used to support the transmission of satellite signals, and the first receiving circuit is used to support the low-noise amplification of satellite signals. Based on the fact that the frequency ranges of cellular signals and satellite signals at least partially overlap, at least one of the transmitting link and receiving link of the transceiver circuit can be multiplexed based on the frequency band overlap. In addition, the gating circuit originally used for gating the transceiver of cellular signals can be used to realize the antenna sharing of the satellite communication system and the cellular mobile communication system, without the need to set up an additional switching switch to share the antenna. The radio frequency system is based on communication link multiplexing and gating circuit multiplexing, which can effectively reduce insertion loss, reduce electromagnetic wave loss, and improve communication performance. In addition, based on link multiplexing, it can also reduce product costs and facilitate product miniaturization design. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is one of the structural schematic diagrams of a radio frequency system according to an embodiment;

[0017] Figure 2 This is a second structural diagram of a radio frequency system according to an embodiment;

[0018] Figure 3 This is a third structural diagram of a radio frequency system according to an embodiment;

[0019] Figure 4 This is a fourth structural diagram of a radio frequency system according to an embodiment;

[0020] Figure 5 This is a fifth structural diagram of a radio frequency system according to an embodiment;

[0021] Figure 6 This is a sixth structural diagram of a radio frequency system according to an embodiment;

[0022] Figure 7 The seventh structural diagram of the radio frequency system of an embodiment;

[0023] Figure 8 This is an eighth structural diagram of a radio frequency system according to an embodiment;

[0024] Fig. 9 A ninth structural diagram of a radio frequency system according to an embodiment;

[0025] Fig.10This is a tenth structural diagram of a radio frequency system according to an embodiment;

[0026] Fig.11 The eleventh structural diagram of a radio frequency system according to an embodiment;

[0027] Fig.12 The twelfth structural diagram of a radio frequency system according to an embodiment;

[0028] Fig.13 The thirteenth structural diagram of the radio frequency system of an embodiment;

[0029] Fig.14 The fourteenth structural diagram of a radio frequency system according to an embodiment;

[0030] Fig.15 The fifteenth structural diagram of a radio frequency system according to an embodiment;

[0031] Fig.16 The sixteenth structural diagram of the radio frequency system of an embodiment;

[0032] Fig.17 FIG. 4 is a schematic structural diagram of an electronic device according to an embodiment. DETAILED DESCRIPTION

[0033] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] The radio frequency system involved in the embodiment of the present application can be applied to electronic devices with wireless communication functions, and the electronic devices can be handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE) (e.g., mobile phones), mobile stations (MS), etc. For the convenience of description, the above-mentioned devices are collectively referred to as electronic devices.

[0036] like Figure 1-Figure 3As shown, the present application provides a radio frequency system, including: a first processing circuit 10, a second processing circuit 20, a first transmitting circuit 30, a first receiving circuit 40, a transceiver circuit 50, and a gating circuit 60.

[0037] Among them, the first processing circuit 10 is used to process satellite signals. The first processing circuit 10 can generate a satellite signal to be transmitted, for example, it can include an oscillator and a modulator, first generate an electrical signal of a certain frequency through the oscillator, and then modulate the electrical signal into a required radio frequency signal through the modulator. The first processing circuit 10 also supports the reception and processing of satellite signals, for example, the received satellite signals can be filtered, mixed and demodulated, decoded, etc. Satellite signals refer to signals transmitted and received when communicating based on satellite systems. Satellite systems may include but are not limited to the Tiantong satellite system, the Beidou system, the Global Positioning System (GPS), the Indian Regional Navigation Satellite System (IRNSS) and the Galileo system. Corresponding to different satellite systems, the type of satellite signal may be Tiantong satellite signal, Beidou satellite signal, GPS satellite signal, IRNSS satellite signal or Galileo satellite signal.

[0038] The second processing circuit 20 is used to process the cellular signal of the cellular mobile communication system. The second processing circuit 20 can generate a cellular signal to be transmitted. The second processing circuit 20 can support the reception processing of the cellular signal, such as filtering, mixing demodulation, decoding and other processing of the cellular signal. The frequency range of the cellular signal and the satellite signal overlaps at least partially. The cellular signal refers to the signal transmitted and received when communicating based on the cellular mobile communication system. The cellular mobile communication system can be a communication system implemented based on any of the following technologies: Code Division Multiple Access (CDMA), third generation mobile communication technology (3G), fourth generation mobile communication technology (4G), fifth generation mobile communication technology (5G), frequency division multiple access technology (FDMA), time division multiple access technology (TDMA), total access communication system technology (TACS), etc.

[0039] The first transmitting circuit 30 is connected to the first processing circuit 10, and the first transmitting circuit 30 is used to support power amplification of the satellite signal to be transmitted from the antenna ANT. The first transmitting circuit may include devices such as a power amplifier to achieve power amplification of the satellite signal. The power amplification parameters of the first transmitting circuit 30 match the power required to support satellite signal transmission. The first transmitting circuit 30 can be directly or indirectly connected to the first processing circuit 10 to access the satellite signal to be transmitted output by the first processing circuit 10, and power amplify the satellite signal.

[0040] The first receiving circuit 40 is connected to the first processing circuit 10, and the first receiving circuit 40 is used to support low-noise amplification of the satellite signal received from the antenna ANT. The first receiving circuit 40 may include components such as a low-noise amplifier and a filter to achieve low-noise amplification of the satellite signal. The first receiving circuit 40 may be directly or indirectly connected to the first processing circuit 10 to transmit the satellite signal received from the antenna ANT to the first processing circuit 10.

[0041] The transceiver circuit 50 includes a transmission link 54 and a receiving link 52 connected to the second processing circuit 20 to support the transmission and reception of cellular signals. The number of the transmission links 54 and the receiving links 52 is not restricted here and can be determined according to actual communication needs. The transceiver circuit 50 supports the transmission and reception of cellular signals, which can be understood as supporting the transmission or reception of at least one radio frequency signal of the cellular signal and the satellite signal in the same frequency band as the cellular signal, which can be specifically determined based on the connection relationship between the transceiver circuit 50 and the first transmitting circuit 30 and the first receiving circuit 40.

[0042] The gating circuit 60 is connected to the transmission link 54, the receiving link 52 and the antenna ANT respectively. Based on the connection relationship, the gating circuit 60 can selectively conduct the transmission link 54 and the antenna ANT, or the receiving link 52 and the antenna ANT, so that the transmission link 54 and the receiving link 52 share the antenna ANT. The number of terminals of the gating circuit 60 can be determined based on the number of signal transmission paths that need to be transmitted through the gating circuit 60 under actual communication requirements.

[0043] Among them, at least one of the first transmitting circuit 30 and the first receiving circuit 40 is connected to the target link in the transceiver circuit 50 to support the transmission of satellite signals; wherein the target link is at least one of the transmitting link 54 and the receiving link 52.

[0044] Specifically, in the radio frequency system, the first transmitting circuit 30 is used to support the transmission of satellite signals, and the first receiving circuit 40 is used to support the low-noise amplification of satellite signals. Since the frequency ranges of cellular signals and satellite signals overlap at least partially, at least one of the transmitting link 54 and the receiving link 52 of the transceiver circuit 50 can be multiplexed based on the frequency band overlap. In addition, the gating circuit 60 originally used for gating the transceiver of cellular signals can be used to realize the antenna sharing of the satellite communication system and the cellular mobile communication system, without the need to set up an additional switching switch to share the antenna. The radio frequency system is based on the multiplexing of communication links and the multiplexing of the gating circuit 60, which can effectively reduce insertion loss, reduce electromagnetic wave loss, and improve communication performance. In addition, based on link multiplexing, product costs can be reduced and it is conducive to the miniaturization design of products.

[0045] In addition, when the first processing circuit 10 and the second processing circuit 20 are separately arranged, the safe isolation of the Tiantong satellite system and the cellular mobile communication system can be achieved, thereby improving the communication security.

[0046] In one embodiment, Figure 1 As shown, the target link only includes a transmission link 54, and the first transmission circuit 30 is connected to the transmission link 54 to jointly support secondary power amplification of the satellite signal to be transmitted. The first receiving circuit 40 is connected to the antenna ANT via the gating circuit 60.

[0047] Specifically, the first processing circuit 10 generates a satellite signal to be transmitted. Figure 1 Under the architecture, the transmission path of the satellite signal is as follows: the satellite signal to be transmitted is transmitted to the transmission link 54 after the first-stage power amplification by the first transmission circuit 30, and then transmitted to the antenna ANT through the selection circuit 60 after the second-stage power amplification by the transmission link 54, and the satellite signal after power amplification is transmitted outward based on the antenna ANT. By reusing the transmission link 54, the requirements for the working voltage and working current of the first transmission circuit 30 can be reduced, so that no additional boost circuit is required to support the power amplification power demand of the satellite signal. For example, for the Tiantong satellite, the required operating voltage is 4.5V, which exceeds the maximum voltage that the battery in some electronic devices can provide. At this time, it is necessary to set up an additional boost circuit to boost the battery voltage. Under the architecture provided by the embodiment of the present application, based on the reuse of the transmission link 54, the required operating voltage of the first transmission circuit 30 is reduced, and the power demand can be met without the need for an additional boost circuit. Under the selection of a boost circuit, the cost of 1 yuan can be saved. In addition, satellite signal transmission under a single antenna can be achieved by reusing the selection circuit 60 originally used to support cellular signal selection, without the need to set up additional switching devices to switch between cellular signal transmission and satellite signal transmission, which is conducive to miniaturization design and cost reduction.

[0048] like Figure 1Under the architecture, the receiving path of the satellite signal is as follows: the satellite signal is accessed through the antenna ANT, the satellite signal is transmitted to the first receiving circuit 40 through the gating circuit 60, and then output to the first processing circuit 10 after passing through the first receiving circuit 40. By multiplexing the gating circuit 60, there is no need to set up additional switching devices to share the antenna, which can reduce the transmission loss and cost caused by the switching devices, and is conducive to miniaturization design.

[0049] In one embodiment, Figure 2 As shown, the target link includes a transmitting link 54 and a receiving link 52. The first transmitting circuit 30 is connected to the transmitting link 54 to jointly support secondary power amplification of the satellite signal; the first receiving circuit 40 is connected to the receiving link 52 to jointly support secondary low noise amplification of the satellite signal.

[0050] Specifically, the first processing circuit 10 generates a satellite signal to be transmitted. Figure 2 Under the architecture, the satellite signal transmission path is as follows: the satellite signal to be transmitted is transmitted to the transmission link 54 after the first-stage power amplification by the first transmission circuit 30, and then transmitted to the antenna ANT through the selection circuit 60 after the second-stage power amplification by the transmission link 54, and the power-amplified satellite signal is transmitted outward based on the antenna ANT.

[0051] The receiving path of the satellite signal is as follows: the satellite signal connected via the antenna ANT is transmitted to the gating circuit 60, and then input to the first receiving circuit 40 via the gating circuit 60. The first receiving circuit 40 performs a first-level low-noise amplification on the satellite signal and then transmits it to the receiving link 52. The receiving link 52 performs a second-level low-noise amplification on the connected satellite signal and outputs the satellite signal after the second-level low-noise amplification to the first processing circuit 10.

[0052] In this embodiment, the satellite signal is amplified in two stages, wherein the first stage of the low noise amplification is implemented by multiplexing the receiving link 52, thereby reducing a low noise amplifier device used for receiving satellite signals alone, thereby reducing costs. In addition, the implementation process of transmitting satellite signals by multiplexing the transmitting link 54 and its beneficial effects can be found in the description of the above embodiment, and will not be described in detail here.

[0053] In one embodiment, Figure 3 As shown, the target link only includes a receiving link 52, and the first receiving circuit 40 is connected to the receiving link 52 to jointly support secondary low noise amplification of the satellite signal. The first transmitting circuit 30 is connected to the antenna ANT via the gating circuit 60.

[0054] Figure 3Under the architecture, the first processing circuit 10 generates a satellite signal to be transmitted, and the transmission path of the satellite signal is as follows: the satellite signal to be transmitted passes through the first transmitting circuit 30 to the gating circuit 60, and then is transmitted to the antenna ANT after being selected by the gating circuit 60, and is transmitted outward through the antenna ANT. By multiplexing the gating circuit 60, there is no need to set up additional switching devices to achieve antenna sharing, which is conducive to controlling costs and reducing transmission losses caused by switching devices, thereby improving communication performance. In addition, reducing switching devices is conducive to product miniaturization design.

[0055] The receiving path and beneficial effects of satellite signals can be found in the above Figure 2 The description in the illustrated embodiment will not be repeated here.

[0056] In one embodiment, Figure 4-Figure 6 As shown, the transceiver circuit 50 and the gating circuit 60 are encapsulated in the same RF device, and the RF device is configured with a transmitting port (TX / TX1 / TX2), a receiving port (RX / RX1 / RX2) and an antenna port ant (see the numbers in the figure below for details of different architectures). Among them, the input end of the transmitting chain 54 is connected to the transmitting port (TX / TX1 / TX2). The output end of the receiving chain 52 is connected to the receiving port (RX / RX1 / RX2). Multiple first ends of the gating circuit 60 are respectively connected to the output end of the transmitting chain 54 and the input end of the receiving chain 52, and the second end of the gating circuit 60 is connected to the antenna port ant.

[0057] The transmission link 54 receives the cellular signal to be transmitted via the transmission port (TX / TX1 / TX2). In the case where the target link includes the transmission link 54, the transmission link 54 receives the satellite signal to be transmitted via the transmission port (TX / TX1 / TX2). The reception link 52 supports the reception of the cellular signal via the antenna ANT and the gating circuit 60 via the receiving port (RX / RX1 / RX2). In the case where the target link includes the reception link 52, the reception link 52 supports the reception of the satellite signal via the antenna ANT via the gating circuit 60. Under the RF device package, the insertion loss caused by the discrete device can be further reduced, thereby improving the communication performance of the RF system.

[0058] In one embodiment, Figure 4 As shown, the target link includes a receiving link 52, and the RF device is further configured with a first auxiliary port AUX1, a second auxiliary port AUX2, and a third auxiliary port AUX3. The first transmitting circuit 30 is connected to the gating circuit 60 via the first auxiliary port AUX1. The gating circuit 60 is connected to the receiving link 52 via the second auxiliary port AUX2, the first receiving circuit 40, and the third auxiliary port AUX3 in sequence, so that the first receiving circuit 40 and the receiving link 52 jointly support the reception of satellite signals.

[0059] like Figure 4 In the illustrated architecture, the receiving path of the satellite signal is as follows: after the satellite signal is received by the antenna ANT, it is transmitted to the selection circuit 60 through the antenna port ant. The selection circuit 60 selects to switch to connect with the second auxiliary port AUX2, so that the satellite signal is transmitted to the first receiving circuit 40 through the second auxiliary port AUX2. The first receiving circuit 40 performs low-noise amplification on the satellite signal and transmits it to the receiving link 52 through the third auxiliary port AUX3. The receiving link 52 performs secondary low-noise amplification on the satellite signal and transmits the satellite signal after the secondary low-noise amplification to the first processing circuit 10 through the receiving port RX.

[0060] In one embodiment, Figure 5-Figure 6 As shown, the target link includes a transmission link 54, and the first transmission circuit 30 is connected to the transmission port (TX1 / TX2), so that the first transmission circuit 30 and the transmission link 54 jointly support the transmission of the satellite signal.

[0061] Among them, Figure 5 As shown, when the target link includes a transmitting link 54 and a receiving link 52, the transmission path of the satellite signal is as follows: the first processing circuit 10 transmits the satellite signal to be transmitted to the first transmitting circuit 30, which performs power amplification on the satellite signal to be transmitted and then transmits it to the transmitting link 54 through the transmitting port TX1; the transmitting link 54 performs secondary power amplification on the connected satellite signal to be transmitted and then transmits it to the enabling circuit 60, and the enabling circuit 60 selects to conduct the connection between the transmitting link 54 and the antenna port ant, so that the satellite signal after the secondary power amplification is transmitted to the antenna ANT through the antenna port ant and is transmitted outwardly through the antenna ANT.

[0062] The receiving path of the satellite signal is as follows: the selection circuit 60 selects to turn on the antenna port ant and the second auxiliary port AUX2, so that the satellite signal received by the antenna ANT is transmitted to the first receiving circuit 40 through the selection circuit 60 and the second auxiliary port AUX2, and after being low-noise amplified by the first receiving circuit 40, it is output to the receiving link 52 through the third auxiliary port AUX3. The receiving link 52 performs secondary low-noise amplification on the connected satellite signal and outputs it to the first processing circuit 10 through the receiving port RX1.

[0063] like Figure 6 As shown, when the target link only includes the transmission link 54, the RF device is further configured with a fourth auxiliary port AUX4, and the first receiving circuit 40 is connected to the gating circuit 60 via the fourth auxiliary port AUX4, so that the first receiving circuit 40 is connected to the antenna ANT via the gating circuit 60. At this time, the transmission path of the satellite signal is as described above. Figure 5The transmission path of the embodiment is introduced as follows: the receiving path of the satellite signal is as follows: the selection circuit 60 selects to conduct the antenna port ant and the fourth auxiliary port AUX4, and the satellite signal received by the antenna ANT is transmitted to the first receiving circuit 40 through the selection circuit 60 and the fourth auxiliary port AUX4. The first receiving circuit 40 performs low noise amplification processing on the satellite signal and then outputs it to the first processing circuit 10.

[0064] In one embodiment, Figure 7-Figure 8 As shown, when the target link includes the transmission link 54, the radio frequency system further includes a switch 70. A first end of the switch 70 is connected to the first processing circuit 10 via the first transmission circuit 30, another first end of the switch 70 is connected to the second processing circuit 20, and a second end of the switch 70 is connected to the input end of the transmission link 54. Figure 7 The embodiment shown is Figure 6 A switch 70 is added to the embodiment shown. Figure 8 The embodiment shown is Figure 5 A switching switch 70 is added on the basis of the illustrated embodiment.

[0065] When transmitting a cellular signal, the second processing circuit 20 outputs the cellular signal to be transmitted, and the transmission path of the cellular signal is as follows: the switching switch 70 selects to conduct the second processing circuit 20 and the transmission link 54, and the cellular signal is transmitted to the transmission link 54 via the switching switch 70. The transmission link 54 amplifies the power of the cellular signal and transmits it to the selection circuit 60. The selection circuit 60 selects to conduct the transmission link 54 and the antenna ANT, and the cellular signal after power amplification is transmitted outward via the antenna ANT.

[0066] When transmitting a satellite signal, the first processing circuit 10 outputs the satellite signal to be transmitted, and the transmission path of the satellite signal is as follows: the first transmitting circuit 30 receives the satellite signal from the first processing circuit 10 and performs power amplification, and the switching switch 70 selects to conduct the first transmitting circuit 30 and the transmitting link 54, so that the satellite signal after power amplification by the first transmitting circuit 30 is transmitted to the transmitting link 54 through the switching switch 70. The transmitting link 54 performs secondary power amplification on the received satellite signal and transmits it to the gating circuit 60, and the gating circuit 60 selects to conduct the transmitting link 54 and the antenna ANT, so that the satellite signal after secondary power amplification is transmitted outward through the antenna ANT.

[0067] In one embodiment, Fig. 9 As shown, the second end of the switch 70 is connected to the transmitting port TX of the RF device. The switch 70 can also be further integrated inside the RF device to further reduce the insertion loss, thereby obtaining Fig.10 The scheme shown.

[0068] In one embodiment, Fig.10 As shown, the transceiver circuit 50, the gating circuit 60 and the switching switch 70 are encapsulated in the same RF device, and the multiple first ends of the switching switch 70 are respectively connected to the multiple transmission ports (TX1, TX2), and the second end of the switching switch 70 is connected to the input end of the transmission link 54. By integrating the switching switch 70 on the chip, the insertion loss can be reduced and the communication performance can be improved. It should be understood that if the input end of the transmission link 54 is originally provided with a switching switch 70, it can be switched to the first transmission circuit 30 or the second processing circuit 20 by multiplexing the switching switch 70 on the transmission link 54.

[0069] In one embodiment, Figure 11-Figure 12 As shown, the first transmitting circuit 30 includes: a first filtering unit 32, and a first power amplifying unit 34. Among them, the input end of the first filtering unit 32 is connected to the first processing circuit 10, and the first filtering unit 32 is used to filter the satellite signal. The filtering unit is used to filter the connected satellite signal to ensure the quality of the satellite signal transmitted backward and improve the communication performance. For example, if the satellite signal is a Tiantong satellite signal, its transmission frequency point is 1980-2010MHz, and the first filtering unit 32 can select the signal of the transmission frequency point and filter out the signals of other frequencies to improve the quality of the satellite signal transmitted by the antenna ANT. The first filtering unit 32 may include one or more filters. When the first filtering unit 32 includes multiple filters, the multiple filters can be arranged in series.

[0070] The input end of the first power amplifying unit 34 is connected to the output end of the first filtering unit 32. Fig.11 As shown, in the case where the target link includes the transmission link 54, the output end of the first power amplification unit 34 is connected to the input end of the transmission link 54. In the case where the target link does not include the transmission link 54, as shown in FIG. Fig.12 As shown, the output end of the first power amplifier unit 34 is connected to the antenna ANT via the gating circuit 60. The first power amplifier unit 34 is used to power amplify the satellite signal. The working voltage of the first power amplifier unit 34 is different when it multiplexes the transmission link 54 and does not multiplex the transmission link 54. The device model of the first power amplifier unit 34 can be selected based on its multiplexing situation.

[0071] In the case where the target link includes the transmission link 54, the first power amplification unit 34 can be connected to the first end of the switch 70 to achieve the connection between the first power amplification unit 34 and the transmission link 54. Optionally, the first power amplification unit 34 can be connected to the transmission port through the switch 70, so that the first power amplification unit 34 and the transmission link 54 jointly support the transmission of the satellite signal to achieve secondary power amplification of the satellite signal. In the case where the target link does not include the transmission link 54, the first power amplification unit 34 can be connected to the first auxiliary port, so that the first power amplification unit 34 is connected to the gating circuit 60.

[0072] In one embodiment, Figure 11-Figure 12 As shown, the radio frequency system further includes a first balun unit 80. The first balun unit 80 is connected to the first processing circuit 10. In one embodiment, Figure 11-Figure 12 As shown, the RF system also includes a second balun unit 90. The second balun unit 90 is connected to the second processing circuit 20. The first balun unit 80 may include one or more balun devices. The second balun unit 90 may include one or more balun devices. A balun device (Balun) is a circuit element for converting a balanced signal and an unbalanced signal to each other. In some application scenarios, the first processing circuit 10 needs to use the first balun unit 80 to achieve signal matching and conversion to ensure the transmission and reception quality of the signal. For example, when the first processing circuit 10 is a Tiantong satellite transceiver, the transmission and reception quality of the signal can be ensured by setting the first balun unit 80 at the transceiver end of the Tiantong satellite transceiver. Whether a balun device is needed may depend on the system design and requirements. Similarly, the setting of the second balun unit 90 may also be based on communication requirements.

[0073] In one embodiment, Figure 13-Figure 14As shown, the first receiving circuit 40 includes: a first low noise amplifier unit 42 and a second filter unit 44. The input end of the first low noise amplifier unit 42 is connected to the gating circuit 60, and the first low noise amplifier unit 42 is used to perform low noise amplification on the satellite signal received by the antenna ANT. The input end of the second filter unit 44 is connected to the output end of the first low noise amplifier unit 42, and the output end of the second filter unit 44 is connected to the input end of the receiving link 52, and the second filter unit 44 is used to filter the satellite signal. In the case where the target link includes the receiving link 52, the gating circuit 60 selects to conduct the antenna ANT and the first low noise amplifier unit 42, so that the satellite signal received by the antenna ANT is amplified by the first low noise amplifier unit 42 and then transmitted to the second filter unit 44, the second filter unit 44 filters out interference signals other than the satellite signal, and transmits the filtered satellite signal to the receiving link 52, outputs it to the first balun unit 80 through one of the ports of the receiving link 52, and outputs it to the first processing circuit 10 after the signal conversion by the first balun unit 80. The second filtering unit 44 is a device that can filter out other signals outside the frequency band of the satellite signal. For example, when the satellite signal is a Tiantong satellite signal, the Tiantong satellite system operates in TDD mode, and the receiving frequency of the Tiantong satellite signal is 2170-2200 MHz, the second filtering unit 44 can select signals within the range of 2170-2200 MHz and filter out signals outside the frequency band.

[0074] In order to better illustrate the implementation process of the radio frequency system provided in the embodiment of the present application, Figure 15 to Figure 16 In the architecture shown, the satellite signal is a Tiantong satellite signal for example.

[0075] In one embodiment, Fig.15 As shown, the transmission link 54 includes: at least one second transmission circuit 542. The input end of the second transmission circuit 542 is connected to the second processing circuit 20, and the output end of the second transmission circuit 542 is connected to the selection circuit 60. The second transmission circuit 542 is used to support power amplification of the cellular signal to be transmitted. The number of second transmission circuits 542 can be determined based on the requirements of the communication frequency band and is not restricted here. When the target link includes the transmission link 54, the second transmission circuit 542 is also used to support power amplification of the satellite signal. The second transmission circuit 542 may include multiple second power amplification units, and the second power amplification unit may include a power amplifier.

[0076] Taking the transmission of Tiantong satellite signals as an example, its transmission path is as follows:

[0077] 1) The Tiantong satellite signal to be transmitted is output from the first processing circuit 10 to the first balun device 82;

[0078] 2) After the first balun device 82 performs balanced / unbalanced signal conversion, the signal is transmitted to the first filtering unit 32. For example, the first filtering unit 32 may include a SAW filter, and the signal is filtered by the SAW filter;

[0079] 3) The satellite signal to be transmitted after being filtered by the first filtering unit 32 is input to the first power amplifying unit 34;

[0080] 4) The first power amplifier unit 34 amplifies the power of the Tiantong satellite signal to be transmitted, and then the signal enters the RF device through the auxiliary port MB_TRX_AUX;

[0081] 5) Inside the RF device, after passing through the selection circuit DP5T, it is output to the MHB antenna through the antenna port ANT1.

[0082] It should be noted that the MB_TRX_AUX port, MHB antenna and RF devices on the above-mentioned transmission path all support the frequency of Tiantong satellite signals to support the transmission of Tiantong satellite signals.

[0083] Take the Tiantong satellite signal as an example. Fig.15 As shown, the receiving path is as follows:

[0084] 1) The Tiantong satellite signal accessed by the antenna MHB is transmitted to the RF device through the ANT1 port of the RF device;

[0085] 2) Inside the RF device, it is output through the coupler and the gating circuit DP5T and the TRX1 port;

[0086] 3) After passing through the TRX1 port, low noise amplification is performed in the first receiving circuit 40 and then output;

[0087] 4) The low noise amplified signal is connected to the receiving link 52 via the MB_HB_LNA_IN port (corresponding to AUX3 in the figure), and is amplified by the internal MHBLNA (mid-high band low noise amplifier) ​​and then output from LNA_OUT;

[0088] 5) The amplified signal is input into the first processing circuit 10 through the second balun device 84 .

[0089] In one embodiment, the transmission link 54 further includes: a filter selection unit 544. The filter selection unit 544 is respectively connected to the output end of the second transmission circuit 542, the input end of the receiving link 52, and the selection circuit 60. The filter selection unit 544 is used to filter the received RF signal and select the output satellite signal or cellular signal. Fig.15As shown, the filter selection unit 544 can support filtering and gating of radio frequency signals of one or more frequency bands, for example, it can support dual transmission of signals of N41 and B40 frequency bands at the same time to improve communication performance. Of course, it is not limited to the examples given here, and the specific structure of the filter selection unit 544 can be determined based on communication requirements, which will not be described in detail here.

[0090] like Fig.15 As shown, the receiving link 52 includes at least one second receiving circuit 522. The input end of the second receiving circuit 522 is connected to the gating circuit 60, and the output end of the second receiving circuit 522 is connected to the second processing circuit 20. The second receiving circuit 522 is used to support the reception of cellular signals. The second receiving circuit 522 can be connected to the gating circuit 60 through an auxiliary port. The second receiving circuit 522 can also be connected to the gating circuit 60 through the filter selection unit 544 in the transmitting link 54, that is, the second receiving circuit 522 can realize the selective reception of multiple frequency band radio frequency signals (at least one of satellite signals and cellular signals) through the multiplexing filter selection unit 544. The second receiving circuit 522 may include multiple second low noise amplifying units 5222 and a multi-input multi-output gating switch 5224 to realize the selective conduction of multiple low noise amplifying units to support low noise amplification of radio frequency signals of multiple frequency bands.

[0091] like Fig.16 Under the architecture shown, the transmission path of the Tiantong satellite signal is as follows:

[0092] 1) The Tiantong satellite signal to be transmitted is output from the first processing circuit 10 to the first balun device 82;

[0093] 2) After the first balun device 82 performs balanced / unbalanced signal conversion, the converted signal is transmitted to the first filtering unit 32 (such as a SAW filter);

[0094] 3) The first filtering unit 32 inputs the filtered signal to the first power amplifying unit 34;

[0095] 4) After the first power amplifier unit 34 performs signal power amplification, the signal is output to the switch 70. The switch 70 selects to conduct the first power amplifier unit 34 and the MB_IN transmission port of the RF device, so that the Tiantong satellite signal to be transmitted enters the second transmission circuit 542 inside the RF device through MB_IN;

[0096] 5) After secondary power amplification by the second transmitting circuit 542, it is output through MB_TRX_OUT:

[0097] 6) MB_TRX_OUT output signal then enters the RF device through MB_TRX_AUX;

[0098] 7) After passing through the selection circuit DP5T, it is output to the MHB antenna through the ANT1 port.

[0099] The gain of the traditional independent PA (Power Amplifier) ​​for transmitting Tiantong satellite signals can be evenly distributed to two devices, reducing the voltage and current of a single PA, and eliminating the boost converter circuit (Boost Converter) in terms of cost.

[0100] When the first filter unit 32 and the second filter unit 44 are SAW filters, the first power amplifier unit 34 and the second power amplifier unit 544 are PAs, and the first low-noise amplifier unit 42 and the second low-noise amplifier unit 5222 are LNAs (Low-Noise Amplifiers), the performance and cost of an embodiment of the present application are compared with the traditional Tiantong satellite transceiver architecture as shown in Tables 1 and 2. In the traditional solution, two switches need to be set to realize the selection of Tiantong transmission and Tiantong reception, and to share the antenna with the cellular mobile communication system, and because the Tiantong satellite signal transmission requires a 4.5V voltage, an additional boost circuit needs to be set to meet its power demand.

[0101] Table 1 Benefits of the embodiment of the present application under the condition of multiplexing transmission links

[0102]

[0103] As shown in Table 1, when multiplexing the transmission link 54, the communication performance can be improved by 1.5dB; saving a switch can save about 0.25 yuan; no boost circuit is needed to boost the battery output voltage, which can save about 1 yuan. Overall, the transmission path can reduce the cost of 1.25 yuan.

[0104] Table 2 The benefits of the embodiment of the present application when the receiving link is multiplexed

[0105]

[0106] As shown in Table 2, when the receiving link 52 is reused, the cost of receiving the Tiantong satellite signal can be reduced by about RMB 1. Moreover, since one LNA is saved, it is beneficial to the miniaturization design of the product.

[0107] It should be understood that the switch loss inside the RF device itself (about 2 dB) can be compensated by increasing the output power of the first transmitting circuit 30 or the transmitting link 54, so as to take into account both the communication quality of the Tiantong satellite signal and the low cost.

[0108] In one embodiment, an electronic device is provided, comprising the radio frequency system of the above embodiment. The electronic device can support the transmission and reception of satellite signals and cellular signals. The transmission of satellite signals can be achieved by multiplexing the cellular signal transmission link, and the reception of satellite signals can also be achieved by multiplexing the cellular signal reception link, which greatly improves the product integration and reduces the cost. By reducing switches, the loss can be reduced and the communication performance can be improved. By reducing LNA, boost circuit, etc., the cost can be further reduced.

[0109] The electronic device may be, but is not limited to, a mobile phone, a tablet, a wearable device, or a vehicle-mounted device. This is not exhaustive. The electronic device provided in the embodiment of the present application can achieve the beneficial effects in the above-mentioned radio frequency system embodiment, which is not described in detail here.

[0110] like Fig.17 As shown, further, the electronic device 1 is taken as a mobile phone 11 for example. The mobile phone 11 may include a memory 21 (which optionally includes one or more computer-readable storage media), a first processing circuit 20, a second processing circuit 22, a peripheral device interface 23, a radio frequency system 24, and an input / output (I / O) subsystem 26. These components optionally communicate through one or more communication buses or signal lines 29. Those skilled in the art will understand that Fig.17 The illustrated mobile phone 11 does not constitute a limitation of the mobile phone, and may include more or fewer components than shown, or a combination of certain components, or a different arrangement of components. Fig.17 The various components shown in the EMBODIMENTS 2000 are implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and / or application specific integrated circuits.

[0111] The memory 21 optionally includes a high-speed random access memory, and optionally also includes a non-volatile memory, such as one or more disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Exemplarily, the software components stored in the memory 21 include an operating system 211, a communication module (or an instruction set) 212, a global positioning system (GPS) module (or an instruction set) 213, etc.

[0112] The first processing circuit 20, the second processing circuit 22 and other control circuits (such as the control circuit in the radio frequency system 24) can be used to control the operation of the mobile phone 11. The first processing circuit 20 and the second processing circuit 22 may include one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application-specific integrated circuits, etc. The first processing circuit 20 and the second processing circuit 22 can be configured to implement a control algorithm for controlling the use of the antenna in the mobile phone 11. The first processing circuit 20 and the second processing circuit 22 can also issue control commands for controlling the switches and matching units in the radio frequency system 24.

[0113] The I / O subsystem 26 couples input / output peripherals on the mobile phone 11, such as a keypad and other input control devices, to the peripheral device interface 23. The I / O subsystem 26 optionally includes a touch screen, buttons, tone generators, accelerometers (motion sensors), ambient light sensors and other sensors, light emitting diodes and other status indicators, data ports, etc. Exemplarily, a user can control the operation of the mobile phone 11 by supplying commands via the I / O subsystem 26, and can use the output resources of the I / O subsystem 26 to receive status information and other output from the mobile phone 11. For example, a user can press button 261 to turn the mobile phone on or off.

[0114] The radio frequency system 24 here may be the radio frequency system in any of the above embodiments.

[0115] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic description of the above terms does not necessarily refer to the same embodiment or example.

[0116] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0117] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A radio frequency system, characterized in that: include: A first processing circuit, used for processing satellite signals; A second processing circuit is used to process a cellular signal of a cellular mobile communication system; the frequency range of the cellular signal and the satellite signal at least partially overlap; a first transmitting circuit, connected to the first processing circuit, for supporting power amplification of the satellite signal to be transmitted from the antenna; a first receiving circuit, connected to the first processing circuit, for supporting low noise amplification of the satellite signal received from the antenna; a transceiver circuit, the transceiver circuit comprising a transmitting link and a receiving link connected to the second processing circuit, the transceiver circuit supporting the transmission and reception of the cellular signal; A gating circuit, the gating circuit being connected to the transmitting link, the receiving link and the antenna respectively, and being used for selectively connecting the transmitting link and the antenna, or connecting the receiving link and the antenna; At least one of the first transmitting circuit and the first receiving circuit is connected to a target link in the transceiver circuit to support the transmission of the satellite signal; wherein the target link is at least one of the transmitting link and the receiving link.

2. The radio frequency system according to claim 1, characterized in that: The target link only includes the transmitting link, and the first transmitting circuit is connected to the transmitting link to jointly support secondary power amplification of the satellite signal to be transmitted; The first receiving circuit is connected to the antenna via the gating circuit.

3. The radio frequency system according to claim 1, characterized in that: The target link includes the transmitting link and the receiving link, and the first transmitting circuit is connected to the transmitting link to jointly support secondary power amplification of the satellite signal to be transmitted; The first receiving circuit is connected to the receiving link to jointly support secondary low-noise amplification of the received satellite signal.

4. The radio frequency system according to claim 1, characterized in that: The target link only includes the receiving link, and the first receiving circuit is connected to the receiving link to jointly support secondary low-noise amplification of the satellite signal; The first transmitting circuit is connected to the antenna via the gating circuit.

5. The radio frequency system according to claim 2 or 3, characterized in that: The radio frequency system also includes a switching switch, a first end of the switching switch is connected to the first processing circuit via the first transmitting circuit, another first end of the switching switch is connected to the second processing circuit, and a second end of the switching switch is connected to the input end of the transmitting link.

6. The radio frequency system according to any one of claims 1 to 4, characterized in that: The transceiver circuit and the gating circuit are packaged in the same radio frequency device, and the radio frequency device is configured with a transmitting port, a receiving port and an antenna port; wherein, The input end of the transmission link is connected to the transmission port; The output end of the receiving link is connected to the receiving port; The multiple first ends of the gating circuit are respectively connected to the output end of the transmitting link and the input end of the receiving link, and the second end of the gating circuit is connected to the antenna port.

7. The radio frequency system according to claim 6, characterized in that: The target link includes the receiving link, and the radio frequency device is further configured with a first auxiliary port, a second auxiliary port and a third auxiliary port; The first transmitting circuit is connected to the gating circuit via the first auxiliary port; The gating circuit is connected to the receiving link via the second auxiliary port, the first receiving circuit, and the third auxiliary port in sequence, so that the first receiving circuit and the receiving link jointly support the reception of the satellite signal.

8. The radio frequency system according to claim 6, characterized in that: The target link includes the transmitting link, and the first transmitting circuit is connected to the transmitting port so that the first transmitting circuit and the transmitting link jointly support the transmission of the satellite signal.

9. The radio frequency system according to claim 6, characterized in that: In the case where the RF system further includes a switching switch, the switching switch is encapsulated in the RF device, and multiple first ends of the switching switch are respectively connected to multiple transmitting ports, and the second end of the switching switch is connected to the input end of the transmitting link.

10. The radio frequency system according to claim 1, characterized in that: The first transmitting circuit comprises: a first filtering unit, wherein an input end of the first filtering unit is connected to the first processing circuit, and the first filtering unit is used to filter the satellite signal; A first power amplifying unit, wherein the input end of the first power amplifying unit is connected to the output end of the first filtering unit, the output end of the first power amplifying unit is connected to the input end of the transmitting link, or is connected to the antenna via the gating circuit, and the first power amplifying unit is used to power amplify the satellite signal.

11. The radio frequency system according to claim 1, characterized in that: The first receiving circuit comprises: a first low-noise amplifying unit, wherein an input end of the first low-noise amplifying unit is connected to the gating circuit, and the first low-noise amplifying unit is used to perform low-noise amplification on a satellite signal received by an antenna; A second filtering unit, wherein an input end of the second filtering unit is connected to an output end of the first low-noise amplifying unit, an output end of the second filtering unit is connected to an input end of the receiving link, and the second filtering unit is used to filter the satellite signal.

12. The radio frequency system according to claim 1, characterized in that: The transmission link comprises: at least one second transmitting circuit, an input end of the second transmitting circuit being connected to the second processing circuit, the second transmitting circuit being configured to support power amplification of the cellular signal; and A filter selection unit, wherein the filter selection unit is respectively connected to the output end of the second transmitting circuit, the input end of the receiving link, and the selection circuit, and the filter selection unit is used to filter the received radio frequency signal and select to output the satellite signal or the cellular signal.

13. The radio frequency system according to claim 1, characterized in that: The receiving link comprises: At least one second receiving circuit, the input end of the second receiving circuit is connected to the selection circuit, the output end of the second receiving circuit is connected to the second processing circuit, and the second receiving circuit is used to support the reception of the cellular signal.

14. An electronic device, characterized in that: Comprising a radio frequency system as claimed in any one of claims 1-13.

Images