CN118631279A

CN118631279A - Communication device and antenna switching method

Info

Publication number: CN118631279A
Application number: CN202410848539.6A
Authority: CN
Inventors: 黄德科
Original assignee: Oneplus Technology Shenzhen Co Ltd
Current assignee: Oneplus Technology Shenzhen Co Ltd
Priority date: 2024-06-26
Filing date: 2024-06-26
Publication date: 2024-09-10

Abstract

The present application relates to a communication device and an antenna switching method. The communication device includes: the radio frequency transceiver circuit is used for supporting the receiving and transmitting processing of satellite signals; the switch circuit is respectively connected with the radio frequency receiving and transmitting circuit and at least two antennas and is used for selectively conducting a passage between any antenna and the radio frequency receiving and transmitting circuit; the processing circuit is connected with the switch circuit and is used for determining a target antenna from a plurality of antennas according to the audio output mode of the communication equipment and controlling the conduction state of the switch circuit so as to support the receiving and transmitting of satellite signals through the target antenna; wherein the audio output mode includes an earpiece mode or a speaker mode, the communication device meeting specific absorption rate requirements in the earpiece mode. The application can support satellite communication in the receiver mode and the loudspeaker mode, and improves the satellite communication performance of the communication equipment.

Description

Communication device and antenna switching method

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communications device and an antenna switching method.

Background

With the development of communication technology, the performance requirements of users on communication devices are increasingly improved, more and more communication devices are integrated with satellite communication functions, and particularly in remote mountain areas, offshore, aviation and other scenes, the emergency requirements of satellite communication are more and more strong due to the fact that the coverage distance of a land mobile base station is limited, and no signals, no services and the like can be caused. However, current communication devices often support only a single speaker mode.

Disclosure of Invention

The application provides a communication device and an antenna switching method, which can support satellite communication in a receiver mode and a loudspeaker mode and improve satellite communication performance of the communication device.

In a first aspect, an embodiment of the present application provides a communication device, including:

the radio frequency transceiver circuit is used for supporting the receiving and transmitting processing of satellite signals;

the switch circuit is respectively connected with the radio frequency receiving and transmitting circuit and at least two antennas and is used for selectively conducting a passage between any antenna and the radio frequency receiving and transmitting circuit;

The processing circuit is connected with the switch circuit and is used for determining a target antenna from a plurality of antennas according to the audio output mode of the communication equipment and controlling the conduction state of the switch circuit so as to support the receiving and transmitting of satellite signals through the target antenna; the communication equipment meets the preset specific absorption rate requirement of the antenna in the earphone mode.

In a second aspect, an embodiment of the present application provides an antenna switching method, which is applied to the foregoing communication device, where the method includes:

Determining an audio output mode of the communication device; wherein the audio output mode includes an earpiece mode or a speaker mode;

And controlling the conduction state of a switching circuit in the communication equipment according to the audio output mode so as to support the receiving and transmitting of satellite signals through a target antenna of the communication equipment.

According to the communication equipment and the antenna switching method, the target antenna is determined from at least two antennas according to the audio output mode by the processing circuit, the conduction state of the switching circuit is controlled, so that the switching circuit selects and conducts the passage between the target antenna and the radio frequency receiving and transmitting circuit, different antennas support receiving and transmitting satellite signals in the receiver mode and the loudspeaker mode, satellite communication in the receiver mode and the loudspeaker mode is supported by the communication equipment, and the communication equipment reduces the influence of the human head on the antenna performance supporting the receiver mode in the receiver mode by arranging the at least two antennas in different positions of the communication equipment, SAR requirements can be met, and satellite communication requirements in the receiver mode are met.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the description of the embodiments or the conventional technology will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic structural diagram of a communication device according to an embodiment;

FIG. 2 is a second schematic diagram of a communication device according to an embodiment;

FIG. 3 is a third schematic diagram of a communication device according to an embodiment;

FIG. 4 is a schematic diagram of a communication device according to an embodiment;

FIG. 5 is a schematic diagram of a communication device according to an embodiment;

FIG. 6 is a schematic diagram of a communication device according to an embodiment;

FIG. 7 is a schematic diagram of a communication device according to an embodiment;

FIG. 8 is a schematic diagram of a communication device according to an embodiment;

fig. 9 is a flowchart of an antenna switching method according to an embodiment;

fig. 10 is an interface schematic diagram of an antenna switching display of a communication device according to an embodiment;

FIG. 11 is a timing diagram of a communication device according to an embodiment transmitting and receiving satellite signals during satellite communication;

Fig. 12 is a timing simulation diagram of a communication device according to an embodiment when switching between an earpiece mode and a speaker mode in a satellite communication scenario.

Reference numerals illustrate:

The communication device, 10-radio frequency transceiver circuit, 11-radio frequency transceiver, 12-transmission module, 121-balun, 122-surface acoustic wave filter, 123-power amplifier, 124-low pass filter, 13-reception module, 131-second low noise amplification unit, 132-third low noise amplification unit, 133-balun, 134-surface acoustic wave filter, 20-switch circuit, 21-first switch module, 211-first switch unit, 212-second switch unit, 22-second switch module, 23-third switch module, 24-fourth switch module, 241-third switch unit, 242-fourth switch unit, 25-fifth switch module, 26-sixth switch module, 261-fifth switch unit, 262-sixth switch unit, 27-seventh switch module, 30-processing circuit, 40-first low noise amplification unit, 51-first reception circuit, 52-second reception circuit, 53-third reception circuit, 1001-first area, 241-second switch area 1013-third switch module, 261-fifth switch unit, 262-sixth switch unit, 27-seventh switch module, 30-processing circuit, 40-first low noise amplification unit, 51-first reception circuit, 52-second reception circuit, 53-third reception circuit, 1001-third switch module, 1001-fourth switch unit, 1013-sixth switch unit, 1013-third switch unit, 261-fifth switch unit, 262-sixth switch unit.

Detailed Description

In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings. Embodiments of the application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that the terms first, second, etc. as used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first antenna may be referred to as a second antenna, and similarly, a second antenna may be referred to as a first antenna, without departing from the scope of the present application. Both the first antenna and the second antenna are antennas, but they are not the same antenna.

It is to be understood that in the following embodiments, "connected" is understood to mean "electrically connected", "communicatively connected", etc., if the connected circuits, modules, units, etc., have electrical or data transfer between them.

It is understood that "at least one" means one or more and "a plurality" means two or more. "at least part of an element" means part or all of the element. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. Also, the term "and/or" as used in this specification includes any and all combinations of the associated listed items.

In general, in remote mountain areas or offshore operations, navigation and other scenes, satellite signals are very weak, so that common antennas are all arranged on the top of a mobile phone, users cannot touch the antennas when holding the antennas with hands, and the performance of the antennas is very little affected. In the related art, a communication device is configured with only one antenna for satellite communication, and does not support ASDIV (antenna main diversity switching) switching modes. Therefore, when the user uses the speaker, the user can only conduct satellite communication in the speaker mode, when the external environment is loud, the communication quality of the user is greatly affected, meanwhile, the privacy of the speaker communication is poor, and the user experience is poor. The reasons why the communication device does not support the earpiece mode mainly include: 1. when a human body approaches to communication equipment in a receiver mode, no authentication has strict requirements on a head SAR (Specific Absorption Rate ), and the risk of SAR is avoided in a back-off power mode generally; 2. in the earphone mode, the antenna is subjected to human body contact to cause more performance degradation of the antenna, so that the influence of dropped calls or signal degradation appears, so that the communication equipment generally supports a fixed handheld mode, and if the external environment is noisy, the quality of hands-free satellite communication is poor, and the user experience is influenced.

In this regard, the present application provides a communication device and an antenna switching method, which can support satellite communication in an earpiece mode and a speaker mode, thereby improving satellite communication performance of the communication device.

The present application provides a communication device 1. As shown in fig. 1, the communication device 1 may be a device having a wireless communication function. For example, the communication device 1 may be a handheld device, a vehicle-mounted device, a wearable device, a computing device, or other processing device connected to a wireless modem, as well as various forms of User Equipment (UE) (e.g., a Mobile Station, MS), and so on.

In one embodiment, as shown in fig. 2, a communication device 1 is provided, the communication device 1 comprising a radio frequency transceiver circuit 10, a switching circuit 20 and a processing circuit 30. The radio frequency transceiver circuit 10 is used for supporting the receiving and transmitting processing of satellite signals. The switch circuit 20 is connected to the radio frequency transceiver circuit 10 and at least two antennas ANT, respectively. The switch circuit 20 is used for selectively conducting a path between any antenna ANT and the radio frequency transceiver circuit 10. Wherein the antennas ANT are located at different positions of the communication device 1. The number of the antennas ANT may be 2,3 or other suitable values, which may be specifically set according to satellite communication requirements, and is not limited herein.

The processing circuit 30 is connected to the switching circuit 20. The processing circuit 30 is configured to determine a target antenna from at least two antennas ANT according to an audio output mode of the communication device 1, and control a conductive state of the switching circuit 20 to support transmission and reception of satellite signals through the target antenna. Wherein the audio output mode includes an earpiece mode or a speaker mode. The communication device 1 fulfils the specific absorption rate requirement in the earpiece mode. At least one antenna ANT supports the transmission and reception of satellite signals in the earpiece mode, and at least one other antenna ANT supports the transmission and reception of satellite signals in the speaker mode. The earpiece mode and the speaker mode are two different output modes of the communication device 1 when playing audio. In earpiece mode, sound is output through the earpiece of the communication device 1, with relatively little audio. In speaker mode, sound is played through the speaker of the communication device 1 with relatively loud audio.

According to the communication device 1, the processing circuit 30 determines the target antenna from the at least two antennas ANT according to the audio output mode, and controls the on state of the switch circuit 20, so that the switch circuit 20 selects the path between the target antenna and the radio frequency receiving and transmitting circuit 10, thereby enabling different antennas ANT to support the receiving and transmitting of satellite signals in the receiver mode and the speaker mode, and realizing satellite communication in the receiver mode and the speaker mode of the communication device 1, wherein the at least two antennas ANT are arranged at different positions of the communication device 1, so that the influence of the human head on the antenna performance supporting the receiver mode by the communication device 1 in the receiver mode is reduced, the SAR requirement can be met, the communication device is suitable for application scenes of telephone conversation such as silence, privacy and public places, and the satellite communication requirement is met by arranging the at least two antennas ANT at different positions of the communication device 1, the influence of the hand-held antenna performance supporting the speaker mode is reduced in the speaker mode, the satellite communication requirement is met, the satellite communication requirement in the speaker mode is met, and the communication requirement of the satellite communication device 1 in the speaker mode is suitable for the application scenes such as audio sharing, the meeting, the outdoor broadcasting speaker, and the communication requirement is improved.

In one embodiment, as shown in fig. 1 to 3, the communication device 1 includes at least a first antenna ANT1 and a second antenna ANT2, and the communication device 1 further includes a first low noise amplification unit 40. The switching circuit 20 is connected to the first antenna ANT1, the second antenna ANT2, and the first low noise amplification unit 40, respectively.

The first antenna ANT1 supports transmission and reception of satellite signals in the receiver mode. The second antenna ANT2 is connected to the switching circuit 20, and the second antenna ANT2 supports transmission and reception of satellite signals in the speaker mode. The first low noise amplification unit 40 supports low noise amplification processing of satellite signals. The radio frequency transceiver circuit 10 comprises at least a second low noise amplifying unit 131. The second low noise amplification unit 131 supports low noise amplification processing of satellite signals. Wherein the first low noise amplifying unit 40 is disposed on a path between the radio frequency transceiving circuit 10 and the first antenna ANT 1. Specifically, the first low noise amplification unit 40 is disposed on a path between the second low noise amplification unit 131 and the first antenna ANT 1.

Wherein the first antenna ANT1 is located at a side of the communication device 1 and the second antenna ANT2 is located at a top of the communication device 2. The first low noise amplifying unit 40 is disposed near the first antenna ANT1, and the second low noise amplifying unit 131 is disposed near the second antenna ANT 2. Illustratively, as shown in fig. 1, the first antenna ANT1 is disposed near the left side of the communication device 1, and the first low noise amplification unit 40 is disposed near the first region 1001 of the first antenna ANT1 on the left side of the communication device 1; the second antenna ANT2 is disposed near the top of the communication device 1, and the second low noise amplification unit 131 is disposed near the top of the communication device 1

A second region 1002 of the second antenna ANT 2. In this way, when the communication device 1 supports satellite communication in the earpiece mode based on the first antenna ANT1, the requirements of no-commission authentication on the head SAR can be met, the performance influence of the human head on the first antenna ANT1 can be reduced, and the satellite communication performance of the communication device 1 can be improved; in addition, when the communication device 1 supports satellite communication in the speaker mode based on the second antenna ANT2, the second antenna ANT2 is located at the top of the communication device 1 and is not shielded by a human body, so that satellite communication performance in the speaker mode is ensured.

The processing circuit 30 is further configured to selectively control the first low noise amplification unit 40 to perform low noise amplification processing on the satellite signal received by the first antenna ANT1 in the earpiece mode. The processing circuit 30 is further configured to selectively control the second low noise amplification unit 131 to perform low noise amplification processing on the satellite signal received by the second antenna ANT2 in the speaker mode.

In the above communication device 1, the processing circuit 30 controls the first low noise amplification unit 40 to perform low noise amplification processing on the satellite signal received by the first antenna ANT1 in the earpiece mode, and controls the second low noise amplification unit 131 to perform low noise amplification processing on the satellite signal received by the second antenna ANT2 in the speaker mode, so as to support the reception processing on the satellite signal in the earpiece mode and the speaker mode, and since the first low noise amplification unit 40 is disposed close to the first antenna ANT1, in the earpiece mode, the insertion loss of the satellite signal by the reception path formed by the first antenna ANT1 and the first low noise amplification unit 40 can be reduced, and the second low noise amplification unit 131 is disposed close to the second antenna ANT2, so that the insertion loss of the satellite signal by the reception path formed by the second antenna ANT2 and the second low noise amplification unit 131 can be reduced in the speaker mode, so that the reception sensitivity of the satellite signal by the communication device 1 in the earpiece mode and the speaker mode is equivalent, and the reception performance of the satellite signal by the communication device 1 in different modes can be ensured.

With continued reference to fig. 3, in one embodiment, the gain coefficients of the first low noise amplification unit 40 and the second low noise amplification unit 131 are the same. For example, the gain coefficients of the first low noise amplifying unit 40 and the second low noise amplifying unit 131 are 14.8dB, 19.8dB or other suitable values, and may be set correspondingly according to the receiving requirement of the communication device 1 for satellite signals, which is not limited herein. In this way, the low noise amplification processing performance of the first low noise amplification unit 40 and the second low noise amplification unit 131 on the satellite signal are consistent, so that the performance of the communication device 1 for performing low noise amplification processing on the satellite signal through the corresponding low noise amplification unit in different modes is equivalent, and the low noise amplification unit is arranged close to the corresponding antenna, so that the receiving performance of the communication device 1 in different modes can be kept consistent, the influence on the receiving sensitivity of the satellite signal due to different antenna positions in different modes is avoided, and the satellite communication performance of the communication device 1 is improved.

With continued reference to fig. 3, in one embodiment, the processing circuit 30 is further configured to control the switching circuit 20 to turn on the branch of the low noise amplification unit 40 for performing the low noise amplification on the satellite signal received by the first antenna ANT1, and control the first low noise amplification unit 40 to be in an amplified state and the second low noise amplification unit 131 to be in a bypass state in the earpiece mode. Based on the above, the second low noise amplification unit 131 is located on the branch of the first low noise amplification unit 40 and the first antenna ANT1, and thus, in the earpiece mode, the communication device 1 performs low noise amplification processing on the satellite signal received by the first antenna ANT1 through the first low noise amplification unit 40, and the second low noise amplification unit 131 performs transmission but not low noise amplification processing on the satellite signal, thereby supporting reception processing on the satellite signal in the earpiece mode.

The processing circuit 30 is further configured to control the switching circuit 20 to turn on the branch of the second low noise amplifying unit 131 for performing low noise amplifying on the satellite signal received by the second antenna ANT2, and control the first low noise amplifying unit 40 to be in the bypass state and the second low noise amplifying unit 131 to be in the amplifying state in the speaker mode. That is, in the speaker mode, the communication apparatus 1 performs low noise amplification processing on the satellite signal received by the second antenna ANT2 through the second low noise amplification unit 131, thereby supporting reception processing on the satellite signal in the speaker mode.

The low noise amplifying unit is in an operating state, which means that the low noise amplifying unit performs low noise amplifying processing on satellite signals. The low noise amplification unit being in a Bypass (Bypass) state refers to an operating state in which the low noise amplification unit transmits satellite signals but does not perform low noise amplification processing, and in the Bypass state, the low noise amplification unit corresponds to a wire for transmitting satellite signals. The low noise amplifying unit here includes a first low noise amplifying unit 40 and a second low noise amplifying unit 131.

In the receiver mode, the communication device 1 controls the switching circuit 20 to turn on the branch circuit of the first low noise amplification unit 40 for performing low noise amplification on the satellite signal received by the first antenna ANT1 through the processing circuit 30, and controls the first low noise amplification unit 40 to be in an amplified state and the second low noise amplification unit 131 to be in a bypass state, so that the low noise amplification on the first antenna ANT1 can be supported by the first low noise amplification unit 40; in addition, in the speaker mode, the communication device 1 controls the switching circuit 20 to switch on the branch of the second low noise amplifying unit 131 to perform low noise amplifying processing on the satellite signal received by the second antenna ANT2 through the processing circuit 30, and controls the first low noise amplifying unit 40 to be in the bypass state and the second low noise amplifying unit 131 to be in the amplifying state, so that the low noise amplifying processing on the second antenna ANT2 can be supported by the second low noise amplifying unit 131, the switching of the low noise amplifying unit in different audio output modes is realized, and the switching of the low noise amplifying unit close to the low noise amplifying unit supporting the antenna receiving and transmitting the satellite signal in different audio output modes is realized, the insertion loss of the receiving path of the satellite signal is reduced, so that the communication device 1 can have consistent receiving performance in different audio output modes, and the stability and reliability of satellite communication of the communication device 1 are improved.

In one embodiment, referring to fig. 3, the radio frequency transceiver circuit 10 further includes a third low noise amplifying unit 132. The third low noise amplification unit 132 is connected to the second low noise amplification unit 131. The third low noise amplifying unit 132 is located on the receiving path of the satellite signal. The third low noise amplification unit 132 is for supporting low noise amplification processing of satellite signals. The gains of the third low noise amplifying unit 132 and the first low noise amplifying unit 40 and the second low noise amplifying unit 131 may be the same or different. For example, the gains of the first low noise amplifying unit 40 and the second low noise amplifying unit 131 are 19.8dB, and the gain of the third low noise amplifying unit 132 is 14.8dB. The gains of the three low noise amplifying units may be set in practical applications according to the reception requirements of the communication apparatus 1, respectively, and are only exemplified herein and not specifically limited.

The processing circuit 30 is also illustratively connected to a third low noise amplifying unit 132. The processing circuit 30 is further configured to selectively control the third low noise amplification unit 132 to perform low noise amplification processing on the satellite signal in the earpiece mode and the speaker mode. The processing circuit 30 is also for controlling the third low noise amplification unit 132 to be in an amplified state, for example, in an earpiece mode and a speaker mode. In application, in the earpiece mode, the communication device 1 performs low noise amplification processing on the satellite signal received by the first antenna ANT1 through the first low noise amplification unit 40 and the third low noise amplification unit 132, respectively; in the speaker mode, the communication apparatus 1 performs low noise amplification processing on satellite signals received by the second antenna ANT2 through the second low noise amplification unit 131 and the third low noise amplification unit 132, respectively.

In the above communication device 1, in the earpiece mode, the third low noise amplification unit 132 and the first low noise amplification unit 40 respectively perform low noise amplification processing on the satellite signal received by the first antenna ANT1, thereby implementing multi-stage low noise amplification processing on the satellite signal; in the speaker mode of the communication device 1, the third low noise amplifying unit 132 and the second low noise amplifying unit 131 respectively perform low noise amplification processing on the satellite signal received by the second antenna ANT2, so as to implement multi-stage low noise amplification processing on the satellite signal, so as to meet the receiving requirement of the communication device 1 on the satellite signal.

In practical applications, at least one of the first low noise amplification unit 40, the second low noise amplification unit 131, and the third low noise amplification unit 132 may be flexibly selected according to satellite communication requirements to support the receiving process of the satellite signal, which is not limited herein.

In one embodiment, the target low noise amplifying unit includes at least one of the first low noise amplifying unit 40, the second low noise amplifying unit 131, and the third low noise amplifying unit 132. The target low noise amplification unit includes a low noise amplifier (Low Noise Amplifier, LNA) and a bypass switch in parallel.

The processing circuit 30 is also connected to a bypass switch. The processing circuit 30 is further configured to control the on state of the bypass switch to control the operating state of the target low noise amplifying unit. The target low noise amplifying unit works in a bypass state when the bypass switch is in a conducting state, and the bypass switch short-circuits the low noise amplifier, wherein the target low noise amplifying unit corresponds to a wire and supports transmission of satellite signals but does not support low noise amplifying processing of the satellite signals. In the case where the bypass switch is in the off state, the target low noise amplification unit operates in an amplified state, in which case the target low noise amplification unit supports low noise amplification processing of satellite signals through the low noise amplifier.

Illustratively, the processing circuit 30 may control the on state of the bypass switch via a GPIO (General Purpose Input/Output) signal, for example, in the case where the GPIO signal is in a high state, control the bypass switch to be in an off state, so as to place the target low-noise amplifying unit in an amplifying state; and when the GPIO signal is in a low level state, controlling the bypass switch to be in a conducting state, so that the target low noise amplifying unit is in a bypass state. In the application, the bypass switch may be controlled to be in an off state when the GPIO signal is in a low level state, and may be controlled to be in an on state when the GPIO signal is in a high level state, which is not limited herein.

Illustratively, in the case where the target low noise amplifying unit includes the first low noise amplifying unit 40, the second low noise amplifying unit 131 and the third low noise amplifying unit 132, the first low noise amplifying unit 40 includes the first low noise amplifier and the first bypass switch, the second low noise amplifying unit 131 includes the second low noise amplifier and the second bypass switch, the third low noise amplifying unit 132 includes the third low noise amplifier and the third bypass switch, the processing circuit 30 is connected to the first bypass switch, the second bypass switch and the third bypass switch, respectively, the processing circuit 30 controls the on state of the first bypass switch through the GPIO1 signal, controls the on state of the second bypass switch through the GPIO2 signal, and controls the on state of the third bypass switch through the GPIO3 signal. In application, the truth table of the GPIO signal of the communication device 1 in the earpiece mode and the speaker mode is shown in table 1, where "1" indicates that the bypass switch is in an off state and "0" indicates that the bypass switch is in an on state.

TABLE 1 truth table of GPIO signals for earpiece mode and speaker mode

In the above-described communication apparatus 1, the target low noise amplification unit includes the low noise amplifier and the bypass switch connected in parallel, and the on state of the bypass switch is controlled by the processing circuit 30 to selectively short-circuit the low noise amplifier by the bypass switch, control of the operating state of the target low noise amplifier is achieved, that is, switching of the target low noise amplifier between the amplifying state and the bypass state is achieved by switching the on state of the bypass switch, so that switching of the operating state of the target low noise amplification unit in different modes can be supported.

In one embodiment, with continued reference to fig. 3, the switching circuit 20 includes a first switching module 21 and a second switching module 22. The first switch module 21 is connected to the first low noise amplifying unit 40, the second low noise amplifying unit 131, the second switch module 22, and the second antenna ANT2, respectively. The first switch module 21 is configured to selectively turn on paths between the first low noise amplifying unit 40, the second switch module 22, the second antenna ANT2, and the second low noise amplifying unit 131, respectively. Illustratively, the first switch module 21 includes at least one of a single pole multiple throw (Single Pole n Throw, SPnT) switch and a multiple pole multiple throw (nPnT) switch, for example, the second switch module 22 is DP4T, and the type of the first switch module 21 may be specifically set according to the requirement, which is not specifically limited herein.

The second switch module 22 is connected to the first low noise amplification unit 40 and the first antenna ANT1, respectively. The second switch module 22 is used for selectively conducting paths among the first low noise amplifying unit 40, the first switch module 21 and the first antenna ANT1, respectively. Illustratively, the second switch module 22 includes a single pole, multiple throw (SPnT) switch, e.g., the second switch module 22 is SP4T, and the type of the second switch module 22 may be specifically set as desired, and is not specifically limited herein.

The processing circuit 30 is configured to control the on states of the first switch module 21 and the second switch module 22 in the earpiece mode, so as to support the transmission and reception of satellite signals through the first antenna ANT 1. In application, in the receiver mode of the communication device 1, the processing circuit 30 may control the on states of the first switch module 21 and the second switch module 22, make the first switch module 21 conduct the path between the first low noise amplification unit 40 and the second low noise amplification unit 131, make the first switch module 21 disconnect the path between the second antenna ANT2 and the second low noise amplification unit 131, and make the second switch module 22 conduct the path between the first antenna ANT1 and the first low noise amplification unit 40, so as to support the reception of satellite signals through the first antenna ANT 1. That is, in the earpiece mode, the reception path of the satellite signal includes the second antenna ANT2, the first switching module 21, and the second low noise amplification module.

The processing circuit 30 is further configured to control the on states of the first switch module 21 and the second switch module 22 in the speaker mode, so as to support the transmission and reception of satellite signals through the second antenna ANT 2. In application, in the speaker mode of the communication device 1, the processing circuit 30 may control the on states of the first switch module 21 and the second switch module 22, make the first switch module 21 conduct the path between the second antenna ANT2 and the second low noise amplifying unit 131, and make the second switch module 22 break the path between the first antenna ANT1 and the first low noise amplifying unit 40, so as to support the reception of satellite signals through the second antenna ANT 2. That is, in the speaker mode, the reception path of the satellite signal includes the first antenna ANT1, the second switching module 22, the first low noise amplifying unit 40, the first switching module 21, and the second low noise amplifying module.

In the receiver mode, the communication device 1 is configured to control the on states of the first switch module 21 and the second switch module 22 through the processing circuit 30, so as to support the reception of satellite signals through the first antenna ANT 1; in addition, in the speaker mode, the communication device 1 controls the on states of the first switch module 21 and the second switch module 22 through the processing circuit 30, so that the satellite signal is received through the second antenna ANT2, the receiving switching between different antennas is realized, the satellite signal is received through different antennas in the receiver mode and the speaker mode, the satellite communication mode of the communication device 1 is expanded, and the satellite communication performance of the communication device 1 is improved.

In one embodiment, referring to fig. 3, the radio frequency transceiver circuit 10 includes a radio frequency transceiver 11, a transmitting module 12, and a receiving module 13. The radio frequency transceiver 11 is used to support the transceiving processing of satellite signals. The transmitting module 12 is connected to the radio frequency transceiver 11 and the first switch module 21, respectively. The transmitting module 12 is used for supporting the transmission processing of satellite signals. The transmitting module 12 includes at least one of a Balun (Balun-unbalance, balun) 121, a Surface Acoustic wave filter (Surface Acoustic wave WAVE FILTER, SAW) 122, a Power Amplifier (PA) 123, and a Low-pass filter (Low PASS FILTER, LPF) 124, for example. The receiving module 13 comprises at least a first low noise amplifying unit 40. Illustratively, the receiving module 13 further includes at least one of a third low noise amplifying unit 132, a balun 133, and a surface acoustic wave filter 134.

In application, in the earpiece mode of the communication device 1, the processing circuit 30 may control the on states of the first switch module 21 and the second switch module 22, make the first switch module 21 conduct the path between the transmitting module 12 and the second switch module 22, make the first switch module 21 disconnect the path between the transmitting module 12 and the second antenna ANT2, and make the second switch module 22 conduct the path between the first antenna ANT1 and the first switch module 21, so as to support the transmission of satellite signals through the first antenna ANT1. In the earpiece mode, the transmission path of the satellite signal includes the radio frequency transceiver 11, the transmission module 12, the first switch module 21, the second switch module 22, and the first antenna ANT1.

In the speaker mode of the communication device 1, the processing circuit 30 may control the on states of the first switch module 21 and the second switch module 22, so that the first switch module 21 breaks the path between the transmitting module 12 and the second switch module 22, and the first switch module 21 turns on the path between the transmitting module 12 and the second antenna ANT2, so as to support the transmission of satellite signals through the second antenna ANT2. In the earpiece mode, the transmission path of the satellite signal includes the radio frequency transceiver 11, the transmission module 12, the first switching module 21, and the second antenna ANT2.

The communication device 1 supports the receiving and transmitting process of satellite signals through the radio frequency transceiver 11 and the transmitting process of satellite signals through the transmitting module 12. In the earpiece mode, the communication device 1 controls the conducting state of the first switch module 21 and the second switch module 22 through the processing circuit 30, so that the transmission of satellite signals is supported through the first antenna ANT 1; in the speaker mode, the communication device 1 controls the on states of the first switch module 21 and the second switch module 22 through the processing circuit 30, so that the transmission of satellite signals is supported through the second antenna ANT2, the transmission switching between different antennas is realized, the transmission of satellite signals in the receiver mode and the speaker mode is supported through different antennas, the satellite communication mode of the communication device 1 is expanded, and the satellite communication performance of the communication device 1 is improved.

In one embodiment, as shown in fig. 4, the first switching module 21 includes a first switching unit 211 and a second switching unit 212. The first switching unit 211 is connected to the second low noise amplifying unit 131, the second switching unit 212, and the processing circuit 30, respectively. The first switching unit 211 is used for selectively turning on a path between the second low noise amplifying unit 131 and the second switching unit 212 under the control of the processing circuit 30. Illustratively, in case the radio frequency transceiver circuit 10 further comprises a radio frequency transceiver 11 and a transmitting module 12, the first switching unit 211 is further connected with the transmitting module 12. The first switching unit 211 is used for selectively conducting paths among the second low noise amplifying unit 131, the transmitting module 12 and the second switching unit 212, respectively. Wherein the second low noise amplifying unit 131 is connected with the radio frequency transceiver 11

The second switching unit 212 is connected to the first low noise amplifying unit 40, the second switching module 22, the second antenna ANT2, and the processing circuit 30, respectively. The fourth switching unit 214 is configured to selectively turn on paths between the first low noise amplifying unit 40, the second switching module 22, the second antenna ANT2, and the first switching unit 211 under control of the processing circuit 30.

In application, in the earpiece mode of the communication device 1, the processing circuit 30 may control the on states of the first switch unit 211, the second switch unit 212 and the second switch module 22 respectively to support the transmission and reception of satellite signals through the first antenna ANT1. In the earpiece mode, the receiving path of the satellite signal includes at least the first antenna ANT1, the second switching module 22, the first low noise amplifying unit 40, the second switching unit 212, the first switching unit 211, the second low noise amplifying unit 131, and the radio frequency transceiver 11, and the transmitting path of the satellite signal includes the radio frequency transceiver 11, the transmitting module 12, the first switching unit 211, the second switching unit 212, the second switching module 22, and the first antenna ANT1.

In the speaker mode of the communication device 1, the processing circuit 30 may control the on states of the first switching unit 211, the second switching unit 212, and the second switching module 22, respectively, to support the transmission and reception of satellite signals through the second antenna ANT2. In the speaker mode, the receiving path of the satellite signal includes the second antenna ANT2, the second switching unit 212, the first switching unit 211, the second low noise amplifying unit 131, and the radio frequency transceiver 11, and the transmitting path of the satellite signal includes the radio frequency transceiver 11, the transmitting module 12, the first switching unit 211, the second switching unit 212, and the second antenna ANT2.

The communication device 1 controls the on states of the first switch unit 211, the second switch unit 212 and the second switch module 22 through the processing circuit 30, so as to realize the switching between the first antenna ANT1 and the second antenna ANT2 in different audio output modes, and also realize the transmission and receiving switching of the same antenna for satellite signals. In practical applications, the configuration shown in fig. 3 or fig. 4 may be flexibly selected according to requirements to set the first switch module 21, for example, in a scene of a smaller device area, the embodiment shown in fig. 3 may be adopted to set the first switch module 21 as a DP4T switch, so as to improve the integration level of the device, which is only illustrative herein and not excessively limited.

In one embodiment, with continued reference to fig. 3 and 4, the communication device 1 further comprises a first receiving circuit 51. The first receiving circuit 51 is connected to the second switch module 22. The first receiving circuit 51 is for supporting a receiving process of a radio frequency signal. The communication system of the radio frequency signal and the satellite signal is different. The communication system of the satellite signal is a satellite communication system. The radio frequency signal communication system includes at least one of a mobile cellular communication system, a bluetooth communication system, and a wireless network communication system. The frequency band of the radio frequency signal is different from that of the satellite signal. The frequency band of the radio frequency signal may be set accordingly according to the communication requirement of the communication device 1, for example, the frequency band of the radio frequency signal may include at least one of a low frequency band (LB) and a medium and high frequency band (MHB), which is not limited herein, for mobile cellular communication.

The processing circuit 30 is further configured to control the on state of the second switch module 22, so that the first antenna ANT1 supports the transmission and reception of the radio frequency signal. For example, in the case where the second switching module 22 turns on the first antenna ANT1 and the first receiving circuit 51, the first antenna ANT1 may serve as a diversity receiving antenna (DRX) for radio frequency signals. The specific use of the first antenna ANT1 may be set accordingly according to the requirements of the communication device 1, and is only exemplified herein without being excessively limited.

The above communication device 1 further supports the receiving and transmitting processing of the radio frequency signal through the first receiving circuit 51, and controls the on state of the second switch module 22 through the processing circuit 30, so that the receiving and transmitting of the radio frequency signal can be supported through the first antenna ANT1, multiplexing of the radio frequency signal and the satellite signal to the first antenna ANT1 is realized, that is, multiplexing of different communication systems to the first antenna ANT1 is realized, the integration level of devices is improved, and the cost and the occupied area of the devices are reduced.

In one embodiment, as shown in fig. 5, the radio frequency transceiver circuit 10 includes a radio frequency transceiver 11, a transmitting module 12, and a receiving module 13. The rf transceiver 11, the transmitting module 12 and the receiving module 13 are similar to the structures shown in fig. 3, and the related content can be seen in the foregoing, which is not repeated here.

The switching circuit 20 comprises a third switching module 23, a fourth switching module 24 and a fifth switching module 25. The third switch module 23 is connected to the radio frequency transceiver 11, the first low noise amplifying unit 40, the second low noise amplifying unit 131, and the processing circuit 30, respectively. The third switch module 23 is configured to selectively turn on paths between the first low noise amplifying unit 40 and the second low noise amplifying unit 131 and the radio frequency transceiver 11 under the control of the processing circuit 30. The third switch module 23 includes an SPnT switch, for example, the third switch module 23 is an SP2T switch, and the third switch module 23 may be any other type of switch device, which is not specifically limited herein.

The fourth switching module 24 is connected to the transmitting module 12, the second low noise amplifying unit 131, the fifth switching module 25, the second antenna ANT2, and the processing circuit 30, respectively. The fourth switch module 24 is configured to selectively turn on the paths between the fifth switch module 25, the second antenna ANT2, and the transmitting module 12, and the paths between the fifth switch module 25, the second antenna ANT2, and the second low noise amplifying unit 131, respectively, under the control of the processing circuit 30. Illustratively, the fourth switch module 24 includes at least one of SPnT switches and nPnT, for example, the fourth switch module 24 is a DPDT switch, and the fourth switch module 24 may be other types of switch devices, which are not specifically limited herein.

The fifth switch module 25 is respectively connected to the fourth switch module 24, the first low noise amplifying unit 40, the first antenna ANT1, and the processing circuit 30, and the second switch module 24 is configured to selectively turn on a path between the fourth switch module 24, the first low noise amplifying unit 40, and the first antenna ANT1 under control of the processing circuit 30. Illustratively, the fifth switch module 25 includes at least one of SPnT switches and nPnT, for example, the fifth switch module 25 is an SP4T switch, and the fifth switch module 25 may be other types of switch devices, which are not specifically limited herein.

In application, the processing circuit 30 may control the conducting states of the third switch module 23, the fourth switch module 24 and the fifth switch module 25 respectively in the earpiece mode of the communication device 1, so as to support the receiving and transmitting of satellite signals through the first antenna ANT1. In the earpiece mode, the reception path of the satellite signal includes the first antenna ANT1, the fifth switching module 25, the first low noise amplifying unit 40, the third switching module 23, and the radio frequency transceiver 11, and the transmission path of the satellite signal includes the radio frequency transceiver 11, the transmission module 12, the fourth switching module 24, the fifth switching module 25, and the first antenna ANT1.

In the speaker mode of the communication device 1, the processing circuit 30 may control the conductive states of the third switch module 23, the fourth switch module 24 and the fifth switch module 25, respectively, to support the transmission and reception of satellite signals through the second antenna ANT2. In the speaker mode, the receiving path of the satellite signal includes the second antenna ANT2, the fourth switching module 24, the second low noise amplifying unit 131, the third switching module 23, and the radio frequency transceiver 11, and the transmitting path of the satellite signal includes the radio frequency transceiver 11, the transmitting module 12, the fourth switching module 24, and the second antenna ANT2.

The communication device 1 controls the conducting states of the third switch module 23, the fourth switch module 24 and the fifth switch module 25 through the processing circuit 30 respectively, so that the switching between the first antenna ANT1 and the second antenna ANT2 in different audio output modes is realized, and the transmission and receiving switching of the same antenna to satellite signals is also realized.

In one embodiment, as shown in fig. 6, the fourth switching module 24 includes a third switching unit 241 and a fourth switching unit 242. The third switching unit 241 is connected to the transmitting module 12, the fifth switching module 25, the fourth switching unit 242, and the processing circuit 30, respectively. The third switching unit 241 is configured to selectively turn on paths between the fifth switching module 25, the fourth switching unit 242, and the transmitting module 12 under the control of the processing circuit 30. The third switching unit 241 includes SPnT, for example, the third switching unit 241 is SP2T.

The fourth switching unit 242 is connected to the second low noise amplifying unit 131, the second antenna ANT2, and the processing circuit 30, respectively. The fourth switching unit 242 is configured to selectively turn on paths between the third switching unit 241, the second low noise amplifying unit 131, and the second antenna ANT2 under control of the processing circuit 30. Illustratively, the fourth switching cell 242 includes SPnT, e.g., the fourth switching cell 242 is SP2T.

In application, in the earpiece mode of the communication device 1, the processing circuit 30 may control the conducting states of the third switch module 23, the third switch unit 241, the fourth switch unit 242 and the fifth switch module 25 respectively, so as to support the receiving and transmitting of satellite signals through the first antenna ANT1. In the earpiece mode, the reception path of the satellite signal includes the first antenna ANT1, the fifth switching module 25, the first low noise amplifying unit 40, the third switching module 23, and the radio frequency transceiver 11, and the transmission path of the satellite signal includes the radio frequency transceiver 11, the transmission module 12, the third switching unit 241, the fifth switching module 25, and the first antenna ANT1.

In the speaker mode of the communication device 1, the processing circuit 30 may control the conductive states of the third switch module 23, the third switch unit 241, the fourth switch unit 242, and the fifth switch module 25, respectively, to support the transmission and reception of satellite signals through the second antenna ANT2. In the speaker mode, the receiving path of the satellite signal includes the second antenna ANT2, the fourth switching unit 242, the second low noise amplifying unit 131, the third switching module 23, and the radio frequency transceiver 11, and the transmitting path of the satellite signal includes the radio frequency transceiver 11, the transmitting module 12, the third switching unit 241, the fourth switching unit 242, and the second antenna ANT2.

In the above communication device 1, the processing circuit 30 controls the on states of the third switch module 23, the third switch unit 241, the fourth switch unit 242 and the fifth switch module 25 respectively, so that the switching between the first antenna ANT1 and the second antenna ANT2 in different audio output modes is realized, and the transmission and receiving switching of the same antenna for satellite signals is also realized. In practical application, the structure shown in fig. 5 or fig. 6 may be flexibly selected according to the requirement to set the fourth switch module 24, for example, in a scene of a smaller device area, the fourth switch module 24 may be set as a DPDT switch in a manner shown in fig. 5, so as to improve the integration level of the device, which is only illustrative herein and not excessively limited.

In one embodiment, with continued reference to fig. 5 and 6, the communication device 1 further includes a second receiving circuit 52. The second receiving circuit 52 is connected to the fifth switch module 25. The second receiving circuit 52 is used to support the receiving process of the radio frequency signal. The second receiving circuit 52 is similar to the first receiving circuit 51 described above, and will not be described here again. The processing circuit 30 is further configured to control the on state of the fifth switch module 25, so that the first antenna ANT1 supports the transmission and reception of the radio frequency signal. For example, in case that the fifth switching module 25 turns on the first antenna ANT1 and the second receiving circuit 52, the first antenna ANT1 may act as a diversity receiving antenna (DRX) for radio frequency signals. The specific use of the first antenna ANT1 may be set accordingly according to the requirements of the communication device 1, and is only exemplified herein without being excessively limited.

The communication device 1 further supports the receiving and transmitting processing of the radio frequency signals through the second receiving circuit 52, and controls the conducting state of the fifth switch module 25 through the processing circuit 30, so that the receiving and transmitting of the radio frequency signals can be supported through the first antenna ANT1, multiplexing of the radio frequency signals and the satellite signals to the first antenna ANT1 is achieved, that is, multiplexing of different communication systems to the first antenna ANT1 is achieved, the integration level of devices is improved, and cost and device occupation area are reduced.

In one embodiment, as shown in fig. 7, the communication device 1 includes a radio frequency transceiving circuit 10, a switching circuit 20, a processing circuit 30, a first antenna ANT1, and a second antenna ANT2. The first antenna ANT1 and the second antenna ANT2 are connected to the switching circuit 20, respectively. The first antenna ANT1 and the second antenna ANT2 are the same as the embodiments provided above, and the related description is specifically referred to above, and will not be repeated here.

The switching circuit 20 comprises a sixth switching module 26 and a seventh switching module 27. The sixth switch module 26 is connected to the radio frequency transceiver circuit 10, the seventh switch module 27, the second antenna ANT2, and the processing circuit 30, respectively. The sixth switching module 26 is configured to selectively turn on paths between the seventh switching module 27, the second antenna ANT2, and the radio frequency transceiver circuit 10 under control of the processing circuit 30. The seventh switch module 27 is connected to the first antenna ANT1 and the processing circuit 30, respectively. Illustratively, the sixth switching module 26 includes at least one of an SPnT switch and nPnT switch, for example, the sixth switching module 26 is a DPDT switch, and may be specifically set to a suitable type according to actual requirements, which is not limited herein.

The seventh switching module 27 is configured to selectively turn on a path between the sixth switching module 26 and the first antenna ANT1 under the control of the processing circuit 30. Illustratively, the seventh switch module 27 includes an SPnT switch, for example, the seventh switch module 27 is an SP4T switch, and may be specifically configured to be of a suitable type according to actual needs, which is not limited herein.

The communication device 1 controls the on states of the sixth switch module 26 and the seventh switch module 27 through the processing circuit 30, so that the communication device 1 can support the receiving and transmitting of satellite signals through the first antenna ANT1 in the receiver mode and the receiving and transmitting of satellite signals through the second antenna ANT2 in the speaker mode, satellite communication functions of the communication device 1 in the receiver mode and the speaker mode are achieved, satellite communication modes of the communication device 1 are expanded, satellite communication performance of the communication device 1 is improved, and switching of the first antenna ANT1 and the second antenna ANT2 in different audio output modes is achieved.

In one embodiment, as shown in fig. 8, the sixth switching module 26 includes a fifth switching unit 261 and a sixth switching unit 262. The fifth switch unit 261 is connected with the rf transceiver circuit 10, the sixth switch unit 262, and the processing circuit 30, respectively. The fifth switch unit 261 is used for selectively conducting the path between the rf transceiver circuit 10 and the sixth switch unit 262 under the control of the processing circuit 30. The sixth switching unit 262 is connected to the fourth switching mode, the second antenna ANT2, and the processing circuit 30, respectively. The sixth switching unit 262 is configured to selectively turn on paths between the seventh switching module 27, the second antenna ANT2, and the fifth switching unit 261 under control of the processing circuit 30.

The communication device 1 controls the conducting states of the five switch units 261, the sixth switch unit 262 and the seventh switch module 27 through the processing circuit 30, so that satellite communication functions of the communication device 1 in an earphone mode and a speaker mode are supported through different antennas, switching of the first antenna ANT1 and the second antenna ANT2 in different audio output modes is also realized, the satellite communication mode of the communication device 1 is expanded, and satellite communication performance of the communication device 1 is improved. In practical applications, the configuration shown in fig. 7 or fig. 8 may be flexibly selected according to requirements to set the sixth switch module 26, for example, in a scenario where the device area is smaller, the embodiment shown in fig. 7 may be adopted, and the sixth switch module 26 is set to be a DPDT switch, so as to improve the integration level of the device, which is only illustrative herein and not excessively limited.

For example, please continue to refer to fig. 7 and 8, wherein the radio frequency transceiver circuit 10 may include a radio frequency transceiver 11, a transmitting module 12, and a receiving module 13. In the structure shown in fig. 7, the transmitting module 12 and the receiving module 13 are respectively connected with the sixth switch module 26; in the structure shown in fig. 8, the transmitting module 12 and the receiving module 13 are connected to the fifth switching unit 261, respectively. The specific structure and functions of the rf transceiver 11, the transmitting module 12 and the receiving module 13 are similar to those of the foregoing embodiments, and the related description is specifically referred to and will not be repeated here.

For example, referring to fig. 7 and 8, the communication device 1 may further include a third receiving circuit 53, where the third receiving circuit 53 is connected to the seventh switch module 27, and the third receiving circuit 53 is configured to support the receiving and transmitting processing of the radio frequency signal. The communication system of the radio frequency signal and the satellite signal is different. The processing circuit 30 is further configured to control the conduction state of the seventh switch module 27, so that the first antenna ANT1 supports the transmission and reception of the radio frequency signal. The third receiving circuit 53 shown in fig. 7 and 8 is similar to the first receiving circuit 51 provided in the foregoing embodiment, and specific reference may be made to the foregoing related description, which is not repeated here.

In one embodiment, with continued reference to fig. 1, the communication device 1 may be configured with an earpiece and Speaker (SPK) 1011 to support an earpiece mode and a speaker mode in satellite communications. By way of example, the speaker may be provided at least one of the top and bottom of the communication device 1. The communication device 1 may also be provided with a volume key 1012 to support adjusting the volume of the audio signal output by the communication device 1 in different modes. Illustratively, the volume key 1012 is provided on the side of the communication device 1, for example, the left side as shown in fig. 1, so as to touch-control the volume. The communication device 1 may also be configured with a power source 1014 and a power key 1013 to turn the communication device 1 on or off via the power key 1013. Illustratively, the power key 1013 is provided on a side of the communication device 1, for example, on the left side as shown in fig. 1, so as to touch-switch the communication device 1. Illustratively, the first antenna ANT1 is disposed proximate to the volume key 1012 and the power key 1013 to reduce the effect of the person's head on the antenna performance in the earpiece mode and to meet SAR requirements. In practical applications, the communication device 1 may be configured according to requirements, and fig. 1 is merely an exemplary illustration.

For better understanding, a communication device 1 provided by an embodiment of the present application is described with reference to fig. 1 to 8. The communication device 1 includes a radio frequency transceiver circuit 10, a switch circuit 20, a processing circuit 30, a receiving circuit (first receiving circuit 51 or second receiving circuit 52), a first antenna ANT1, and a second antenna ANT2. The radio frequency transceiver circuit 10 includes a radio frequency transceiver 11, a transmitting module 12, and a receiving module 13. The transmitting module 12 includes a balun 121, a surface acoustic wave filter 122, a power amplifier 123, and a low pass filter 124 connected in series. The receiving module 13 includes a balun 133, a third low noise amplifying unit 132, a surface acoustic wave filter 134, and a second low noise amplifying unit 131 connected in series. The first antenna ANT1 is provided in the middle of the left side portion of the communication device 1, the second antenna ANT2 is provided in the upper right of the top portion of the communication device 1, and the power amplifier 123, the second low noise amplification unit 131, and the third low noise amplification unit 132 in the radio frequency transceiver circuit 10 are provided close to the first antenna ANT1, respectively. The following describes a satellite signal transmission/reception link budget with reference to a specific configuration, taking the gain of the second low noise amplification unit 131 as 19.8dB and the gain of the third low noise amplification unit 132 as 14.8dB as an example.

As for the structure shown in fig. 8, the fifth switch unit 261, the sixth switch unit 262, and the seventh switch module 27 are exemplified as SP2T switches, respectively. The transmit link and receive link budget in speaker mode are supported for the second antenna ANT2 as follows:

(1) Reception Sensitivity (RX Sensitivity) = -174+5db (C/N) +10×log (16 Khz) +nf= -127+nf= -127+2.2= -124.8dbm

(2) Noise figure (NF total) ≡nf1+nf2= (trace loss0.2+sp4T loss0.5 x 2+lnaf0.6)

+(RX filter Loss+Balun loss+RFIC NF-1)/LNA Gain＝1.8+0.4＝2.2dB

(3) Transmission performance (TX) =37-loss=37-1.5=35.5 dbm

In the receiving sensitivity calculation formula, the bandwidth of 21.6Khz is taken as an example, and the roll-off coefficient of 0.35 is calculated, so that the actual bandwidth=21.6\ (1+0.35) =16 Khz. The transmit link and receive link budget in earpiece mode are supported for the first antenna ANT1 as follows:

(4) Reception Sensitivity (RX Sensitivity) = -174+5db (C/N) +10×log (16 Khz) +nf= -127+nf= -127+4.3= -122.7dbm

(5) Noise figure (NF total) ≡nf1+nf2= (trace loss1.8+sp4T loss0.5×3+lnaf0.6)

+(RX filter Loss+Balun loss+RFIC NF-1)/LNA Gain＝3.9+0.4＝4.3

(6) Transmission performance (TX) =37-loss=37-4=33 dbm

As can be seen from the above data, the insertion Loss (Loss) of the first antenna ANT1 is larger, and as can be seen from the RX link budget, the insertion Loss of the receiving link of the first antenna ANT1 is larger by approximately 2dbm compared with the receiving link of the second antenna ANT 2.

For the structure shown in fig. 7, taking the sixth switch module 26 as a DPDT switch as an example, compared with fig. 8, the sixth switch module 26 is equivalent to the fifth switch unit 261 and the sixth switch unit 262 in fig. 8, which provides the integration level of the device and reduces the cost and the occupied area of the device.

Further, under the same conditions, for the structure shown in fig. 4, in which the gain of the first low noise amplifying unit 40 is 19.8dB, the first switching unit 211 is an SP2T switch, and the second switching unit 212 and the second switching module 22 are SP4T switches, respectively, as an example. The transmit link and receive link budget for the second antenna ANT2 in support of speaker mode is consistent with the budget of fig. 8 described above, with no change. The transmit link and receive link budget in earpiece mode are supported for the first antenna ANT1 as follows:

(1) Reception Sensitivity (RX Sensitivity) = -174+5db (C/N) +10×log (16 Khz) +nf= -127+nf= -127+2= -125dbm

(2) Noise figure (NF total) ≡nf1+nf2= (trace loss0.5+sp4T loss0.5+ LNANF 0.6.6)

+(RX filter Loss+Balun loss+RFIC NF-1)/LNAGain＝1.6+0.4＝2

(3) Transmission performance (TX) =37-loss=37-4=33 dbm

As is apparent from the above data, in fig. 4, the first low noise amplifying unit 40 is added near the first antenna ANT1 compared to the structure shown in fig. 8, and the operation states of the three low noise amplifying units are controlled as shown in the above table 1, and the receiving sensitivity of the first antenna ANT1 in the earpiece mode is improved by 2.3dbm.

For the structure shown in fig. 3, taking the first switch module 21 as a DP4T switch as an example, compared with fig. 4, the first switch module 21 is equivalent to the first switch unit 211 and the second switch unit 212 in fig. 4, which provides the integration level of the device and reduces the cost and the occupied area of the device.

Further, under the same conditions, for the structure shown in fig. 6, in which the third switch module 23, the third switch unit 241, and the fourth switch unit 242 are SP2T switches, the second switch module 22 is an SP4T switch, and the transmission path of the first antenna ANT1 from the low-pass filter passes through only two switches, namely, one SP2T and one SP4T, compared with the scheme of fig. 4, the insertion loss of one switch is reduced, and the TX performance can be improved by about 0.5-0.7 db. Specific TX link budget tx=37-loss=37-3.4=33.6 dbm.

For the structure shown in fig. 5, taking the fourth switch module 24 as a DPDT switch as an example, compared with fig. 6, the fourth switch module 24 is equivalent to the third switch unit 241 and the fourth switch unit 242 in fig. 6, which provides the integration level of the device and reduces the cost and the occupied area of the device.

The communication device 1 provided by the embodiment of the application can support satellite communication in the receiver mode and the speaker mode, and the LNA (namely the first low noise amplifying unit 40) is added near the antenna supporting the receiver mode to improve the sensitivity, meanwhile, the gain of the front end in the channel cannot be too large, the problem of overlarge gain is solved by the way that the middle-stage LNA (namely the second low noise amplifying unit 131) realizes Bypass (Bypass) control through GPIO, and the receiving performance of the communication device 1 on satellite signals is improved; in addition, through the change of the switch and the combined design, the transmission performance of the communication equipment 1 to satellite signals is further improved.

Based on the same inventive concept, the embodiment of the present application also provides an antenna switching method applied to the above communication device 1. The implementation of the antenna switching method to solve the problem is similar to the implementation described in the above-mentioned communication device 1, so the specific limitations in one or more embodiments of the antenna switching method provided below may be referred to the above limitation of the communication device 1, and will not be repeated here.

In one embodiment, as shown in fig. 9, an antenna switching method is provided, which may be applied to the communication device 1 provided in the foregoing embodiment, and in combination with fig. 1 to 8, the antenna switching method may include the following step S901 and step S902.

S901: an audio output mode of the communication device is determined, wherein the audio output mode includes an earpiece mode or a speaker mode.

S902: and controlling the conduction state of a switching circuit in the communication equipment according to the audio output mode so as to support the receiving and transmitting of satellite signals through a target antenna of the communication equipment.

The communication device 1 may set up a corresponding software algorithm to effect antenna switching. For example, as shown in fig. 10, the communication device 1 may display an audio output mode selection interface in a satellite communication scenario, and the user may perform a touch operation on the display interface and correspondingly generate a mode selection instruction to select an earpiece mode or a speaker mode for satellite communication. Correspondingly, after the communication device 1 obtains the mode selection instruction, whether the audio output mode of the communication device 1 is the receiver mode or the speaker mode can be determined according to the mode selection instruction, so that a target antenna is determined from at least two antennas according to the audio output mode, and the conducting state of the switch circuit 20 is controlled to support receiving and transmitting of satellite signals through the target antenna, that is, the switching of the receiver mode and the speaker mode is realized through switching the target antenna, so that satellite communication of the communication device 1 in the receiver mode and the speaker mode is realized, the satellite communication mode of the communication device 1 is expanded, and the satellite communication performance of the communication device 1 is improved.

It should be noted that, the control of the on state of the switching circuit 20 by the communication device 1 in different modes may be set according to the specific structure of the communication device 1, and the specific reference may be made to the related description of the communication device 1 provided in the foregoing embodiment, which is not repeated herein.

In one embodiment, the time for the communication device 1 to switch the audio output mode of the communication device 1 through the switching circuit 20 is less than or equal to the time interval for the communication device 1 to time-share transmit and receive satellite signals. Based on this, the logic of antenna switching switches within the (RX) time slot after the completion of the Transmit (TX) time slot, avoiding damage to the power amplifier 123 in the radio transceiver circuit 10.

Illustratively, the communication device 1 time-switches the conductive state between the target antenna and the radio frequency transceiver circuit 10 to support time-shared transmission and reception of satellite signals. Fig. 11 provides a timing chart of the operation of the communication device 1 for transmitting and receiving satellite signals during satellite communication, in which, for example, a period of time for transmitting and receiving (RX/TX) satellite signals is 60ms, a period of time for RX is 11.7ms, and a gap time for RX to TX or TX to RX is 300us, the time for the communication device 1 to switch the audio output mode by the switching circuit 20 is less than or equal to 300us, so that the reliability of the PA can be better protected. Taking the configuration shown in fig. 8 as an example, when the communication device 1 performs the earpiece mode and the speaker mode switching in satellite communication, the software implementation can perform the logic switching of the sixth switching unit 262 (SP 2T switch) in the RX slot, so as to ensure that the idle switching condition occurs when the power amplifier 123 on the transmit path transmits with high power.

Taking the structure shown in fig. 8 and the working scenario shown in fig. 11 as an example, fig. 12 provides a timing simulation diagram of antenna switching performed by the communication device 1 during satellite communication, where the right diagram of fig. 12 is a gray scale diagram of the left diagram. When the user selects the earpiece mode at the audio output mode selection interface of the communication device 1, at this time, the user performs a touch operation on the communication device 1, and the communication device 1 may generate a mode selection instruction according to the touch operation, and after receiving the mode selection instruction, the satellite protocol stack waits until the TX time slot is over, and then performs switching before the next RX time slot. It can be seen from fig. 12 that the GPIO level of the antenna switch is switched at the RX time slot. As can be seen from fig. 12, the RX duration is about 48ms, wherein the waveform indicated by the arrow corresponds to the sixth switching unit 262. In a low level state of the waveform indicated by the arrow, the sixth switching unit 262 turns on the path between the fifth switching unit 261 and the second antenna ANT2 and turns off the path between the fifth switching unit 261 and the second antenna ANT2, in which case the communication apparatus 1 is in a satellite communication state in the speaker mode. After the on-state switching of the sixth switching unit 262 is completed within the gap time 300um between TX and RX, the waveform indicated by the arrow is switched from the low-level state to the high-level state, in which case the sixth switching unit 262 turns on the path between the fifth switching unit 261 and the second antenna ANT2 and turns off the path between the fifth switching unit 261 and the second antenna ANT2, thereby realizing the switching of the satellite communication mode of the communication device 1 from the speaker mode to the earpiece mode. In this way, damage to devices due to switching of the switch in the PA operating state can be avoided, and reliability and stability of the communication device 1 are ensured.

In the description of the present specification, reference to the term "some embodiments," "other embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the application, which are described in greater detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the application, which are within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.

Claims

1. A communication device, comprising:

2. The communication device of claim 1, wherein the at least two antennas comprise a first antenna and a second antenna, wherein the first antenna is located on a side of the communication device and the second antenna is located on a top of the communication device, the first antenna and the second antenna being respectively connected to the switching circuit;

The communication device further comprises a first low noise amplifying unit, wherein the first low noise amplifying unit is connected with the switch circuit and is arranged on a path between the radio frequency receiving and transmitting circuit and the first antenna; wherein the first low noise amplification unit is disposed close to the first antenna;

the radio frequency receiving and transmitting circuit at least comprises a second low-noise amplifying unit, and the second low-noise amplifying unit is arranged close to the second antenna;

the processing circuit is further configured to selectively control the first low noise amplification unit to perform low noise amplification processing on the satellite signal received by the first antenna in the earpiece mode, and selectively control the second low noise amplification unit to perform low noise amplification processing on the satellite signal received by the second antenna in the speaker mode.

3. The communication apparatus according to claim 2, wherein the gain coefficient of the first low noise amplification unit is the same as that of the second low noise amplification unit.

4. A communication device according to claim 3, wherein the processing circuit is further configured to, in the earpiece mode, control the switching circuit to turn on a branch of the first low noise amplification unit that performs low noise amplification processing on the satellite signal received by the first antenna, and control the first low noise amplification unit to be in an amplified state and the second low noise amplification unit to be in a bypass state; the bypass state refers to a working state that the low-noise amplifying unit transmits satellite signals but does not amplify the satellite signals;

the processing circuit is further used for controlling the switching circuit to conduct a branch circuit of the second low-noise amplifying unit for carrying out low-noise amplifying processing on satellite signals received by the second antenna in the loudspeaker mode, and controlling the first low-noise amplifying unit to be in a bypass state and the second low-noise amplifying unit to be in an amplifying state.

5. A communication device according to claim 3, wherein the radio frequency transceiver circuit further comprises a third low noise amplification unit connected to the second low noise amplification unit, the third low noise amplification unit being configured to support low noise amplification of the satellite signal.

6. The communication apparatus according to claim 5, wherein a target low noise amplification unit includes at least one of the first low noise amplification unit, the second low noise amplification unit, and the third low noise amplification unit, the target low noise amplification unit including a low noise amplifier and a bypass switch connected in parallel; wherein,

The processing circuit is also connected with the bypass switch and is also used for controlling the conduction state of the bypass switch so as to control the amplifying state of the target low-noise amplifying unit; wherein,

Under the condition that the bypass switch is in a conducting state, the target low-noise amplifying unit works in a bypass state;

the target low noise amplification unit operates in an amplification state with the bypass switch in an off state.

7. The communication device of claim 2, wherein the switching circuit comprises a first switching module and a second switching module; wherein,

The first switch module is respectively connected with the first low-noise amplifying unit, the second switch module and the second antenna, and is used for selecting and conducting a passage between the first low-noise amplifying unit, the second switch module and the second antenna and the second low-noise amplifying unit;

The second switch module is respectively connected with the first low-noise amplifying unit and the first antenna, and is used for selectively conducting the paths between the first low-noise amplifying unit and the first antenna and between the first switch module and the first antenna;

The processing circuit is used for controlling the conduction states of the first switch module and the second switch module in the earphone mode so as to support the receiving and transmitting of the satellite signals through the first antenna; the processing circuit is further configured to control, in the speaker mode, on states of the first switch module and the second switch module to support transmission and reception of the satellite signal through the second antenna.

8. The communication device of claim 7, wherein the first switch module comprises a first switch unit and a second switch unit; wherein,

The first switch unit is respectively connected with the second low-noise amplifying unit, the second switch unit and the processing circuit, and is used for selectively conducting a passage between the second low-noise amplifying unit and the second switch unit under the control of the processing circuit;

The second switch unit is respectively connected with the first low noise amplifying unit, the second switch module, the second antenna and the processing circuit, and is used for selecting and conducting the paths among the first low noise amplifying unit, the second switch module, the second antenna and the first switch unit under the control of the processing circuit.

9. The communication device of claim 7, further comprising a first receive circuit coupled to the second switch module, the first receive circuit configured to support receive processing of radio frequency signals; wherein, the communication modes of the radio frequency signal and the satellite signal are different;

The processing circuit is further configured to control a conductive state of the second switch module, so that the first antenna supports the receiving and transmitting of the radio frequency signal.

10. The communication device of claim 2, wherein the radio frequency transceiver circuit further comprises a transmit module and a radio frequency transceiver, the switch circuit comprising a third switch module, a fourth switch module, and a fifth switch module; wherein,

The third switch module is respectively connected with the radio frequency transceiver, the first low-noise amplifying unit, the second low-noise amplifying unit and the processing circuit, and is used for selecting and conducting a passage between the first low-noise amplifying unit and the second low-noise amplifying unit and the radio frequency transceiver under the control of the processing circuit;

The fourth switch module is respectively connected with the transmitting module, the second low-noise amplifying unit, the second switch module, the second antenna and the processing circuit, and is used for selectively conducting the paths between the second switch module, the second antenna and the transmitting module and the paths between the second switch module, the second antenna and the second low-noise amplifying unit under the control of the processing circuit;

The fifth switch module is respectively connected with the fourth switch module, the first low-noise amplifying unit, the first antenna and the processing circuit, and is used for selecting and conducting a passage between the fourth switch module, the first low-noise amplifying unit and the first antenna under the control of the processing circuit.

11. The communication device of claim 10, wherein the fourth switching module comprises a third switching unit and a fourth switching unit; wherein,

The third switch unit is respectively connected with the transmitting module, the fifth switch module, the fourth switch unit and the processing circuit, and is used for selectively conducting the paths between the fifth switch module, the fourth switch unit and the transmitting module under the control of the processing circuit;

The fourth switch unit is respectively connected with the second low-noise amplifying unit, the second antenna and the processing circuit, and is used for selecting and conducting the paths between the third switch unit, the second low-noise amplifying unit and the second antenna under the control of the processing circuit.

12. The communication device of claim 1, wherein the at least two antennas comprise at least a first antenna and a second antenna, the first antenna and the second antenna being respectively connected to the switching circuit;

the switch circuit comprises a sixth switch module and a seventh switch module, wherein the sixth switch module is respectively connected with the radio frequency transceiver circuit, the seventh switch module, the second antenna and the processing circuit, and the sixth switch module is used for selectively conducting the paths between the seventh switch module, the second antenna and the radio frequency transceiver circuit under the control of the processing circuit;

the seventh switch module is respectively connected with the first antenna and the processing circuit, and is used for selectively conducting a passage between the sixth switch module and the first antenna under the control of the processing circuit.

13. The communication device of claim 12, wherein the sixth switching module comprises a fifth switching unit and a sixth switching unit; wherein,

The fifth switch unit is respectively connected with the radio frequency receiving and transmitting circuit, the sixth switch unit and the processing circuit, and is used for selectively conducting a passage between the radio frequency receiving and transmitting circuit and the sixth switch unit under the control of the processing circuit;

the sixth switch unit is respectively connected with the seventh switch module, the second antenna and the processing circuit, and is used for selectively conducting the paths between the seventh switch module, the second antenna and the fifth switch unit under the control of the processing circuit.

14. An antenna switching method, applied to a communication device according to any of claims 1-13, the method comprising:

15. The antenna switching method according to claim 14, wherein a time for the communication device to switch an audio output mode of the communication device through the switching circuit is less than or equal to a gap time for the communication device to time-share transmit/receive the satellite signal.