Signal source and method for controlling radio frequency signal output of signal source

Abstract

The application discloses a signal source and a radio frequency signal output control method of the signal source. The signal source comprises a frequency source, a radio frequency switch, a frequency lock detection module and a processor. The frequency source is connected with the radio frequency switch. The input end of the frequency lock detection module is connected with the frequency source, and the output end of the frequency lock detection module is connected with the input end of the processor, which is used for detecting whether the frequency generated by the frequency source is in a lock state, obtaining a first detection result, and sending the first detection result to the processor. The output end of the processor is connected with the radio frequency switch. In the case that the frequency source is to be switched, the processor controls the radio frequency switch to be turned off. In the case that the frequency source is switched and the first detection result indicates that the frequency generated by the frequency source is in the lock state, the processor controls the radio frequency switch to be turned on. The application embodiment suppresses transient spurs.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of signal sources, and particularly relates to a signal source and a radio frequency signal output control method of the signal source. BACKGROUND

[0002] In a radio frequency signal source or a source module for implementing other functions, there is usually quite high requirement for a spur index, which is one of important indexes for measuring a whole machine or system. The spur signal can refer to other signals except for a useful signal and harmonics or sub-harmonics thereof. In the case of using the source device as an excitation source, the spur signals will interfere with test measurement, greatly reducing test reliability.

[0003] The spur signals are classified into inherent spur and transient spur. Generally, the user's attention is mostly on the spur in the case that a signal frequency is not changed. The spur is basically inherent spur or power spur of a system scheme which can be observed for a long time by a test device. The transient spur refers to a spur which does not exist constantly, for example, a transient spur or amplitude abnormal signal is generated due to frequency source frequency switching or amplitude switching in a frequency switching process. These are all harmful signals in test measurement because of the transient, which is not easy to capture and is often ignored.

[0004] However, the suppression or solution of the transient spur is rarely mentioned in the related art, and therefore there is an urgent need for a scheme for suppressing the transient spur. SUMMARY

[0005] The embodiments of the application provide a signal source and a radio frequency signal output control method of the signal source, so as to suppress the transient spur in the frequency switching process.

[0006] In a first aspect, the embodiments of the application provide a signal source, comprising: a frequency source, a radio frequency switch, a frequency lock detection module and a processor.

[0007] The frequency source is connected with the radio frequency switch; an input end of the frequency lock detection module is connected with the frequency source, and an output end of the frequency lock detection module is connected with an input end of the processor, for detecting whether a frequency generated by the frequency source is in a lock state, obtaining a first detection result, and sending the first detection result to the processor; and an output end of the processor is connected with the radio frequency switch.

[0008] In the case that the frequency source is to be frequency switched, the processor controls the radio frequency switch to be turned off; in the case that the frequency source is frequency switched and the first detection result indicates that the frequency generated by the frequency source is in the lock state, the processor controls the radio frequency switch to be turned on.

[0009] In a second aspect, the embodiments of the present application further provide a radio frequency signal output control method of a signal source, which is applied to a signal source, the signal source comprising a frequency source, a radio frequency switch and a processor, the frequency source being connected with the radio frequency switch, and an output end of the processor being connected with the radio frequency switch; the radio frequency signal output control method of the signal source comprises:

[0010] In a case where the frequency source is to be switched in frequency, the processor controls the radio frequency switch to be turned off, so as to prohibit the radio frequency signal output by the frequency source from being output from the radio frequency switch;

[0011] In a case where the frequency source is switched in frequency and the processor determines that the frequency generated by the frequency source is in a locked state, the processor controls the radio frequency switch to be switched from the off to the on, so as to control the radio frequency signal to be output from the radio frequency switch.

[0012] The signal source provided by the embodiments of the present application comprises a frequency source, a radio frequency switch, a frequency lock detection module and a processor, the frequency source is connected with the radio frequency switch, an input end of the frequency lock detection module is connected with the frequency source, and an output end of the frequency lock detection module is connected with an input end of the processor, which is used to detect whether the frequency generated by the frequency source is in a locked state, to obtain a first detection result, and to send the first detection result to the processor, an output end of the processor is connected with the radio frequency switch, in a case where the frequency source is to be switched in frequency, the processor controls the radio frequency switch to be turned off, in a case where the frequency source is switched in frequency and the first detection result indicates that the frequency generated by the frequency source is in a locked state, the processor controls the radio frequency switch to be turned on. In this way, in a case where the frequency source is to be switched in frequency, the processor controls the radio frequency switch to be turned off, so as to prevent the transient signal generated by frequency loss in the frequency switching process from being output from the radio frequency switch, and in a case where the frequency source is switched in frequency and the frequency generated by the frequency source is in a locked state, the processor controls the radio frequency switch to be turned on, so that the radio frequency signal can be output, and the transient spurious signal in the frequency switching process is inhibited by the radio frequency switch. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic diagram of a signal source in an embodiment of the present application;

[0014] Figure 2 is a schematic diagram of a signal source in another embodiment of the embodiments of the present application;

[0015] Figure 3 is a schematic diagram of a signal source in still another embodiment of the embodiments of the present application;

[0016] Figure 4 is a flowchart of a radio frequency signal output control method of a signal source in an embodiment of the present application;

[0017] Figure 5 is a flowchart of a radio frequency signal output control method of a signal source in another embodiment of the present application;

[0018] Figure 6 is a flowchart of a radio frequency signal output control method of a signal source in another embodiment of the present application;

[0019] Figure 7 is a flowchart of a radio frequency signal output control method of a signal source in another embodiment of the present application. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0021] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a category, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0022] The frequency switching control method provided by the embodiments of the present application will be described in detail below with reference to the drawings and specific embodiments and application scenarios.

[0023] As shown in Figure 1 , the signal source comprises a frequency source 11, a radio frequency switch 12, a frequency lock detection module 13, and a processor 14;

[0024] The frequency source 11 is connected to the radio frequency switch 12;

[0025] The input end of the frequency lock detection module 13 is connected to the frequency source 11, and the output end of the frequency lock detection module 13 is connected to the input end of the processor 14, for detecting whether the frequency generated by the frequency source 11 is in a locked state, obtaining a first detection result, and sending the first detection result to the processor 14;

[0026] The output of the processor 14 is connected with the radio frequency switch 12.

[0027] Wherein, in the case that the frequency source 11 is to be switched, the processor 14 controls the radio frequency switch 12 to be off; in the case that the frequency source 11 is switched and the first detection result indicates that the frequency generated by the frequency source 11 is in the locked state, the processor 14 controls the radio frequency switch to be on.

[0028] Specifically, the frequency source 11 is a frequency generating part, for example, in a radio frequency signal source or a source module for realizing other functions, in the process of inputting a reference signal to the frequency source 11, the frequency source 11 is responsible for generating a signal of a certain frequency.

[0029] The radio frequency switch 12 is used to control the on-off of the signal generated by the frequency source.

[0030] The frequency lock detection module 13 can be a phase-locked loop (PLL) chip, which is a frequency and phase synchronization technology realized by using feedback control principle, and its function is to keep the clock output by the circuit synchronized with the external reference clock. When the frequency or phase of the reference clock changes, the phase-locked loop will detect the change. The frequency lock detection module 13 is used to detect whether the frequency generated by the frequency source is in the locked state (that is, to detect whether the frequency generated by the frequency source is stable at a value), and obtain the first detection result of whether the frequency generated by the frequency source is in the locked state.

[0031] The processor 14 can be used to control the on-off of the radio frequency switch 12, that is, to control the on-off of the signal generated by the frequency source.

[0032] The frequency source 11 is connected with the radio frequency switch 12, and the input of the frequency lock detection module 13 is connected with the frequency source 11, and the output of the frequency lock detection module 13 is connected with the input of the processor 14, and the output of the processor 14 is connected with the radio frequency switch 12, so that the frequency lock detection module 13 can send the first detection result to the processor 14 after detecting the first detection result, and the processor 14 can judge whether to control the radio frequency switch to be on according to the first detection result. Specifically, during the frequency switching process, the frequency source will be in the unlocked state, and during the process from the unlocked state to the re-locked state, the frequency will be unstable or unlocked, resulting in transient spurs. Transient spurs refer to spurs that do not exist constantly, so the processor 14 can control the radio frequency switch 12 to be off, thereby preventing the output of transient spurs during the frequency switching process and suppressing the transient spurs during the frequency switching process.

[0033] It should be noted that the size of the transient spurs will be suppressed by the isolation degree of the radio frequency signal, and the size of the suppression ability mainly depends on the isolation degree of the radio frequency switch.

[0034] In the case that the frequency source 11 performs frequency switching and the first detection result indicates that the frequency generated by the frequency source 11 is in a locked state, that is, when the frequency source locks the frequency point, it is indicated that the frequency is stable at this time, and then the processor 14 controls the radio frequency switch 12 to be turned on, so that the radio frequency signal output after the frequency is stable is realized.

[0035] In addition, in one embodiment, as shown in the figure, the signal source further comprises an automatic level control (ALC) module 15 and an amplitude lock detection module 16. Figure 2

[0036] The frequency source 11 is connected with the radio frequency switch 12 through the ALC module 15, and the ALC module 15 is used to adjust the amplitude value of the radio frequency signal output by the frequency source 11.

[0037] The input end of the amplitude lock detection module 16 is connected with the ALC module 15, and the output end of the amplitude lock detection module 16 is connected with the processor 14, which is used to detect whether the amplitude value of the radio frequency signal is in a locked state, obtain a second detection result, and send the second detection result to the processor 14.

[0038] The output end of the processor 14 is connected with the ALC module 15.

[0039] In the case that the frequency source 11 is to be frequency switched, the processor 14 controls the ALC module 15 to stop running after controlling the radio frequency switch 12 to be turned off; in the case that the frequency source 11 performs frequency switching and the first detection result indicates that the frequency generated by the frequency source 11 is in a locked state, the processor 14 controls the ALC module 15 to run, and in the case that the second detection result indicates that the amplitude value is in a locked state, the processor 14 controls the radio frequency switch 12 to be turned on.

[0040] Specifically, the ALC module 15 is used to adjust the amplitude value of the radio frequency signal output by the frequency source, and the amplitude lock detection module 16 is used to detect whether the amplitude value of the radio frequency signal is in a locked state (that is, whether the amplitude value of the radio frequency signal is stable at a fixed value). The amplitude lock detection module 16 can detect whether the amplitude value of the radio frequency signal is in a locked state by detecting the voltage value of the ALC driving amplitude change.

[0041] ​In addition, specifically, the frequency source 11, the ALC module 15 and the radio frequency switch 12 are connected in series in the embodiment, the ALC module 15 is connected with the processor 14 through the amplitude lock detection module 16, and the output end of the processor 14 is connected with the ALC module 15. Before the frequency source switches the frequency, the frequency of the frequency source will be out of lock in the frequency switching process, so that the amplitude of the radio frequency signal is in an unstable state, and therefore the ALC module needs to be closed before the frequency is switched, that is, the ALC module is controlled to stop running. By controlling the ALC module to stop running, it is ensured that the frequency is suddenly lost in the frequency switching process, and the ALC module will not be out of lock due to the loss of the frequency, so as to be pulled to the point of maximum amplitude gain. In addition, the inherent instability of the frequency source in the frequency switching process and the indirect instability of the ALC module are the reasons for the generation of the transient, that is, the ALC module will be out of lock when the frequency source switches the frequency, so that the ALC module tends to the point of minimum amplitude attenuation, at which the amplitude gain is maximum, so that the transient radio frequency signal is further amplified by the ALC module. Therefore, in order to prevent the output of the transient spurious signal, the processor controls the radio frequency switch to be turned off first, and then controls the ALC module to stop running in the embodiment, so as to prevent the problem that the transient signal is output from the radio frequency switch when the ALC module is in an unstable state during the closing process, thereby suppressing the transient spurious.

[0042] It should be noted that when the transient spurious is suppressed by the isolation degree of the ALC module and the radio frequency switch, the suppression ability depends on the isolation degree of the radio frequency switch and the maximum amplitude attenuation of the ALC module.

[0043] In addition, when the frequency source switches the frequency and the first detection result indicates that the frequency generated by the frequency source is in a locked state, it is indicated that the frequency source has locked the frequency point at this time, and the frequency has been stabilized. Therefore, the processor can control the ALC module to run to adjust the amplitude value of the radio frequency signal output by the frequency source. In addition, the ALC module needs a certain time for locking, and the amplitude of the radio frequency signal is in an unstable state during the locking process of the ALC module. Therefore, in order to avoid the output of the transient signal, the radio frequency switch cannot be turned on at this time. When the second detection result indicates that the amplitude value of the radio frequency signal is in a locked state, the frequency of the frequency source and the amplitude of the radio frequency signal have been stabilized at this time. Therefore, the processor can control the radio frequency switch to be turned on, so as to ensure the normal output of the radio frequency signal.

[0044] In addition, in one embodiment, as shown in Figure 3 the signal source further includes: an attenuation module 17, configured to adjust and compensate the amplitude value; and an amplification module 18, configured to amplify the power of the radio frequency signal.

[0045] The attenuation module 17 and the amplification module 18 are connected in series between the ALC module 15 and the radio frequency switch 12, or the attenuation module 17 and the amplification module 18 are arranged after the radio frequency switch 12 and connected with the radio frequency switch 12.

[0046] In the case that the frequency source 11 is to be switched, the processor 14 controls the radio frequency switch 12 to be turned off, the attenuation module 17 to stop running, the amplification module 18 to stop running, and then controls the ALC module 15 to stop running; in the case that the frequency source 11 is switched and the first detection result indicates that the frequency generated by the frequency source is in a locked state, the processor 14 controls the ALC module 15 to run, and in the case that the second detection result indicates that the amplitude value is in a locked state, the processor 14 controls the attenuation module 17 and the amplification module 18 to run, and controls the radio frequency switch 12 to be turned on.

[0047] Specifically, the attenuation module 17 is used to adjust and compensate the amplitude value of the radio frequency signal, and the amplification module 18 is used to amplify the power of the radio frequency signal. The attenuation module 17 and the amplification module 18 can be connected in series between the ALC module and the radio frequency switch, or the attenuation module 17 and the amplification module 18 can be connected in series after the radio frequency switch 12, that is, the connection order of the attenuation module 17, the amplification module 18 and the radio frequency switch 12 after the ALC module is not specifically limited in the embodiment. It should be noted that the embodiment is described by taking the attenuation module 17 and the amplification module 18 which can be connected in series between the ALC module and the radio frequency switch as an example, and the specific connection order is shown in Figure 3

[0048] Before the frequency source starts to be switched, the processor needs to control the radio frequency switch 12 to be turned off, and control the attenuation module 17 and the amplification module 18 to stop running, and then control the ALC module to stop running, so as to prevent the ALC module from having an unstable state during the process of stopping running and causing the output of transient spurs, thereby suppressing the transient spurs. In addition, during the process of the frequency source being switched, when the first detection result indicates that the frequency generated by the frequency source is in a locked state, that is, when it is detected that the frequency source locks a new frequency point, it indicates that the frequency is stable at this time, and then the processor can control the ALC module to run. In addition, since the ALC module needs a certain time to lock the amplitude, and the amplitude is in an unstable state during the locking process, therefore, the radio frequency switch, the attenuation module and the amplification module cannot be directly turned on at this time, and therefore, when it is detected that the ALC module locks the amplitude, that is, when the second detection result indicates that the amplitude value of the radio frequency signal is in a locked state, the frequency and the amplitude are both stable at this time, and then the radio frequency switch, the attenuation module and the amplification module can be turned on, so as to realize the normal output of the radio frequency signal, and the frequency switching time is not affected. ​

[0049] It should be noted that in the process of frequency switching, the transient spurs are suppressed by the ALC module, the radio frequency switch, the attenuation module and the amplifier, and the suppression capability mainly depends on the isolation of the radio frequency switch, the maximum amplitude attenuation of the ALC module, the attenuation dynamic of the attenuation module and the isolation of the amplifier.

[0050] The embodiment controls the opening and closing timing of the ALC module, the radio frequency switch, the attenuation module and the amplifier by using the characteristics of the ALC module, the radio frequency switch, the attenuation module and the amplifier and the problems caused in the process of frequency switching, so that the modules can work cooperatively, and the frequency switching can be quickly realized without spending hardware cost to maximize the suppression of spurs.

[0051] In addition, as Figure 4 indicated, a flowchart of a radio frequency signal output control method of a signal source is provided in the embodiment. The radio frequency signal output control method is applied to a signal source, and the signal source includes a frequency source, a radio frequency switch and a processor. The frequency source is connected with the radio frequency switch, and the output end of the processor is connected with the radio frequency switch. Specifically, the connection relationship and specific content of the frequency source, the radio frequency switch and the processor can be referred to the introduction of the above-mentioned related embodiments, and will not be described here.

[0052] Referring to Figure 4 , the radio frequency signal output control method of the signal source includes the following steps:

[0053] Step 401: In the case that the frequency source is to be frequency switched, the processor controls the radio frequency switch to be turned off to prohibit the radio frequency signal output by the frequency source from being output from the radio frequency switch.

[0054] Specifically, in the case that the frequency source is to be frequency switched, i.e. before the frequency source is frequency switched, in order to prevent the transient signal from the radio frequency switch in the switching process, the processor can control the radio frequency switch to be turned off, so as to prohibit the radio frequency signal output by the frequency source from being output from the radio frequency switch, and the transient spurs are suppressed.

[0055] It should be noted that the transient spurs are suppressed by the isolation of the radio frequency switch, and the suppression capability depends on the isolation of the radio frequency switch.

[0056] Step 402: In the case that the frequency source is frequency switched and the processor determines that the frequency generated by the frequency source is in a locked state, the processor controls the radio frequency switch to be switched from off to on to control the radio frequency signal to be output from the radio frequency switch.

[0057] Specifically, after the frequency source performs the frequency switching, if the processor determines that the frequency generated by the frequency source is in a locked state, i.e., the frequency has been stabilized, the processor can control the radio frequency switch to be turned on, i.e., to be switched from being turned off to being turned on, so that the radio frequency signal is output from the radio frequency switch, and the frequency switching ends.

[0058] In this way, in the case that the frequency source is to perform the frequency switching, the processor controls the radio frequency switch to be turned off, and in the case that the frequency source performs the frequency switching and the processor determines that the frequency generated by the frequency source is in the locked state, the processor controls the radio frequency switch to be switched from being turned off to being turned on, so that the radio frequency signal is output from the radio frequency switch after the frequency is stabilized, and the output of the transient signal in the frequency switching process is prevented by controlling the radio frequency switch to be turned off, and the transient spurs are suppressed while ensuring the normal output of the radio frequency signal.

[0059] In addition, in an embodiment, when the frequency source performs the frequency switching, the frequency source can receive the frequency switching data configured by the user and perform the frequency switching according to the frequency switching data.

[0060] Specifically, the frequency source can receive the frequency switching data configured by the user and perform the frequency switching according to the frequency switching data, so that the switched frequency can meet the needs of the user.

[0061] In addition, in an embodiment, the signal source further includes a frequency lock detection module, an input end of the frequency lock detection module is connected with the frequency source, and an output end of the frequency lock detection module is connected with an input end of the processor, for detecting whether the frequency generated by the frequency source is in a locked state; when the processor determines that the frequency generated by the frequency source is in the locked state, the processor can include:

[0062] The frequency lock detection module detects whether the frequency generated by the frequency source is in the locked state, and sends a first detection result indicating whether the frequency generated by the frequency source is in the locked state to the processor; in the case that the first detection result indicates that the frequency generated by the frequency source is in the locked state, the processor determines that the frequency generated by the frequency source is in the locked state.

[0063] It should be noted that the specific structure of the signal source defined in the embodiment can be referred to the embodiment shown in Figure 1 and will not be described herein again.

[0064] Specifically, the frequency lock detection module sends the first detection result indicating whether the frequency generated by the frequency source is in the locked state to the processor, and in the case that the first detection result indicates that the frequency generated by the frequency source is in the locked state, i.e., the frequency has been stabilized, the processor determines that the frequency generated by the frequency source is in the locked state.

[0065] Specifically, another embodiment of the method for controlling the output of the radio frequency signal during the frequency switching process is described as follows. Figure 5 As shown in FIG. 6, the method for controlling the output of the radio frequency signal can include the following steps:

[0066] Before the frequency switching starts, the processor starts to respond and control the radio frequency switch to be turned off. Then, the frequency source receives the frequency switching data configured by the user and performs the frequency switching according to the frequency switching data. After the configuration is completed, the frequency will be unlocked. Then, the frequency locking detection module detects whether the frequency generated by the frequency source is re-locked. If the first detection result detected by the frequency locking detection module indicates that the frequency generated by the frequency source is in the locked state, the processor controls the radio frequency switch to be turned on.

[0067] In this way, after the processor controls the radio frequency switch to be turned off, the frequency source can receive the frequency switching data configured by the user and perform the frequency switching according to the frequency switching data. Since the frequency of the frequency source will be unstable, i.e., in the unlocked state, after the configuration is completed, the spurious signal will be generated. At this time, in order to avoid the output of the spurious signal, the radio frequency switch can be controlled to be turned on when it is determined that the frequency source locks the frequency corresponding to the frequency switching data, i.e., after the frequency is stable, so as to complete the frequency switching. In this way, the transient spurious signal caused by the frequency switching in this process can be suppressed by the on-off state of the switch.

[0068] In addition, in an embodiment, the signal source further includes an ALC module, the frequency source is connected with the radio frequency switch through the ALC module, the ALC module is used for adjusting the amplitude value of the radio frequency signal output by the frequency source, and the output end of the processor is connected with the ALC module.

[0069] After the processor controls the radio frequency switch to be turned off in the case where the frequency source is to be subjected to the frequency switching, the method further includes the following steps:

[0070] The processor controls the ALC module to stop running. In the case where the frequency source is subjected to the frequency switching and the processor determines that the frequency generated by the frequency source is in the locked state, the processor controls the ALC module to run, and controls the radio frequency switch to be turned on in the case where the amplitude value of the radio frequency signal is in the locked state.

[0071] It should be noted that the connection relationship and specific content of the frequency source, the radio frequency switch, the processor and the ALC module can be referred to the description of the above-mentioned embodiments, which will not be described herein.

[0072] Specifically, in the case that the frequency source is to be switched, i.e. before the frequency switching, the processor first controls the RF switch to be turned off, and then controls the ALC module to stop running, so as to avoid the transient spur generated after the ALC module stops running from being output from the RF switch. When the frequency source starts to be switched, the frequency source receives the configured frequency switching data, and the frequency will be lost after the configuration is completed. At this time, the frequency source is waiting for the frequency to be re-locked, and the processor controls the ALC module to run after determining that the frequency re-locked by the frequency source, i.e. the frequency is in the locked state. In addition, since the ALC module also needs a certain time to lock the amplitude, the processor controls the RF switch to be turned on in the case that the amplitude value of the RF signal is in the locked state, i.e. the frequency and the amplitude are both stable, so that the stable RF signal can be normally output. In this way, the above process is used to realize that the stable RF signal can be normally output while suppressing the transient spur in the frequency switching process.

[0073] In one embodiment, the signal source further comprises an amplitude lock detection module, an input end of the amplitude lock detection module is connected with the ALC module, and an output end of the amplitude lock detection module is connected with the processor, and the amplitude lock detection module is used to detect whether the amplitude value of the RF signal is in the locked state.

[0074] The processor determining that the amplitude value is in the locked state can comprise the following steps:

[0075] The processor receives a second detection result sent by the amplitude lock detection module, and the second detection result is used to indicate whether the amplitude value is in the locked state. In the case that the second detection result indicates that the amplitude value is in the locked state, the processor determines that the amplitude value is in the locked state.

[0076] It should be noted that the specific structure of the signal source in the embodiment can be referred to the embodiment shown in Figure 2 , and will not be described here in detail.

[0077] Specifically, the amplitude lock detection module can detect whether the amplitude value of the RF signal is in the locked state, and send a second detection result indicating whether the amplitude value is in the locked state to the processor. At this time, if the second detection result indicates that the amplitude value is in the locked state, the processor determines that the adjusted amplitude value is in the locked state.

[0078] In one embodiment, when the amplitude lock detection module detects whether the amplitude value of the RF signal is in the locked state, the amplitude lock detection module can detect whether the voltage value driving the amplitude value of the RF signal to change is a constant value. If the voltage value driving the amplitude value of the RF signal to change is a constant value, the amplitude lock detection module determines that the amplitude value of the RF signal is in the locked state.

[0079] Thus, the embodiment detects whether the amplitude value of the radio frequency signal is locked by detecting whether the voltage value of the amplitude value change of the driving radio frequency signal is a constant value, thereby ensuring the convenience of the amplitude detection of the radio frequency signal.

[0080] Specifically, another embodiment of the radio frequency signal output control method in the frequency switching process is described below. As shown in Figure 6 The radio frequency signal output control method can include the following steps:

[0081] Before the frequency switching starts, the processor starts to respond, controls the radio frequency switch to be turned off, and then controls the ALC module to stop running. Then, the frequency source receives the frequency switching data configured by the user, and performs frequency switching according to the frequency switching data. After the configuration is completed, the frequency will be lost. Then, the frequency locking detection module is used to detect whether the frequency generated by the frequency source is re-locked. If the first detection result detected by the frequency locking detection module indicates that the frequency generated by the frequency source is in a locked state, the processor controls the ALC module to run, and detects whether the amplitude value of the radio frequency signal is re-locked through the amplitude locking detection module. If the second detection result detected by the amplitude locking detection module indicates that the amplitude value is in a locked state, the processor controls the radio frequency switch to be turned on. At this time, the frequency switching process is completed, and the transient spurs generated in the frequency switching process are suppressed while the radio frequency signal is stably output.

[0082] Of course, it should be noted that if the first detection result indicates that the frequency generated by the frequency source is not in a locked state, the ALC module and the radio frequency switch remain closed. After the frequency switching is performed and the ALC module is re-run, if the second detection result indicates that the amplitude value is not in a locked state, the ALC module remains running.

[0083] In addition, in an embodiment, the signal source further includes: an attenuation module configured to adjust and compensate the amplitude value; and an amplification module configured to amplify the power of the radio frequency signal. The attenuation module and the amplification module are connected in series between the ALC module and the radio frequency switch, or the attenuation module and the amplification module are arranged after the radio frequency switch and connected to the radio frequency switch.

[0084] After the processor controls the radio frequency switch to be turned off, the method further includes:

[0085] The processor controls the attenuation module to stop running and the amplification module to stop running, and then controls the ALC module to stop running; when the frequency source performs frequency switching and the processor determines that the frequency generated by the frequency source is in a locked state, the processor controls the ALC module to run, and when the processor determines that the amplitude value of the radio frequency signal is in a locked state, the processor controls the attenuation module and the amplification module to run, and controls the radio frequency switch to be turned on.

[0086] It should be noted that the specific structure of the signal source in this embodiment can be referred to the embodiment shown in Figure 3 The specific structure of the signal source in this embodiment can be referred to the embodiment shown in

[0087] Specifically, after the processor controls the radio frequency switch to be turned off and before the processor controls the ALC module to stop running, the processor can control the attenuation module and the amplification module to stop running. In this way, when the ALC module is in an unstable state during the process of stopping running, the radio frequency switch, the attenuation module and the amplification module are turned off first, and then the ALC module is controlled to stop running, so that the transient spurs can be suppressed to a very low level. In addition, when the frequency source performs frequency switching and the processor determines that the frequency generated by the frequency source is re-locked, the processor can control the ALC module to run first, and then control the attenuation module and the amplification module to run when the amplitude value of the radio frequency signal is locked, and control the radio frequency switch to be turned on. In this process, the transient spurs of the signal source can be suppressed by the ALC module, the attenuation module, the amplification module and the radio frequency switch.

[0088] Specifically, another embodiment of the radio frequency signal output control method during frequency switching is described below. As shown in Figure 7 The radio frequency signal output control method can include the following steps:

[0089] Before the frequency switching starts, the processor starts to respond, controls the radio frequency switch to be turned off, controls the attenuation module and the amplification module to stop running, and then controls the ALC module to stop running; then, the frequency source receives the frequency switching data configured by the user, performs frequency switching according to the frequency switching data, and the frequency is unlocked after the configuration is completed; then, the frequency locking detection module is used to detect whether the frequency generated by the frequency source is re-locked, if the first detection result detected by the frequency locking detection module indicates that the frequency generated by the frequency source is in a locked state, the processor controls the ALC module to run, and the amplitude locking detection module is used to detect whether the amplitude value of the radio frequency signal is re-locked, if the second detection result detected by the amplitude locking detection module indicates that the amplitude value is in a locked state, the processor controls the radio frequency switch to be turned on and controls the attenuation module and the amplification module to run again, at this time, the frequency switching process is completed, and the transient spurs generated during the frequency switching process are suppressed while the radio frequency signal is stably output.

[0090] Of course, it needs to be explained that if the first detection result indicates that the frequency generated by the frequency source is not in a locked state, the radio frequency switch, the attenuation module and the amplification module remain closed; after the frequency switching and the ALC module is re-run, if the second detection result indicates that the amplitude value is not in a locked state, the ALC module remains running.

[0091] In this way, the embodiment controls the opening and closing timing of the ALC module, the radio frequency switch, the attenuation module and the amplification module by using the characteristics of the ALC module, the radio frequency switch, the attenuation module and the amplification module, so that the modules can work cooperatively, and the frequency switching can be quickly realized while the spurs can be maximally suppressed without spending hardware cost.

[0092] It should be noted that in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or include elements inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0093] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment method can be realized by means of software and necessary general hardware platform, of course, it can also be realized by hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes a plurality of instructions for making a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) execute the methods described in various embodiments of the present application.

[0094] The embodiments of the present application are described above with reference to the accompanying drawings, but the present application is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative, but not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims.

Claims

1. A signal source, characterized by, The signal source comprises: a frequency source, a radio frequency switch, a frequency lock detection module and a processor; the frequency source is connected with the radio frequency switch; an input end of the frequency lock detection module is connected with the frequency source, and an output end of the frequency lock detection module is connected with an input end of the processor, for detecting whether a frequency generated by the frequency source is in a locked state, obtaining a first detection result, and sending the first detection result to the processor; an output end of the processor is connected with the radio frequency switch; wherein, in a case that the frequency source is to be switched, the processor controls the radio frequency switch to be turned off; in a case that the frequency source is switched and the first detection result indicates that the frequency generated by the frequency source is in the locked state, the processor controls the radio frequency switch to be turned on.

2. The signal source of claim 1, wherein, The signal source further comprises an automatic level control (ALC) module and an amplitude lock detection module; the frequency source is connected with the radio frequency switch through the ALC module, and the ALC module is used for adjusting an amplitude value of a radio frequency signal output by the frequency source; an input end of the amplitude lock detection module is connected with the ALC module, and an output end of the amplitude lock detection module is connected with the processor, for detecting whether the amplitude value of the radio frequency signal is in a locked state, obtaining a second detection result, and sending the second detection result to the processor; an output end of the processor is connected with the ALC module; wherein, in a case that the frequency source is to be switched, after the processor controls the radio frequency switch to be turned off, the processor controls the ALC module to stop running; in a case that the frequency source is switched and the first detection result indicates that the frequency generated by the frequency source is in the locked state, the processor controls the ALC module to run, and in a case that the second detection result indicates that the amplitude value is in the locked state, the processor controls the radio frequency switch to be turned on.

3. The signal source of claim 2, wherein, The signal source further comprises an attenuation module used for adjusting and compensating the amplitude value, and an amplification module used for amplifying power of the radio frequency signal; the attenuation module and the amplification module are connected in series between the ALC module and the radio frequency switch, or the attenuation module and the amplification module are arranged behind the radio frequency switch and connected with the radio frequency switch; wherein, in a case that the frequency source is to be switched, after the processor controls the radio frequency switch to be turned off, the attenuation module to stop running and the amplification module to stop running, the processor controls the ALC module to stop running; in a case that the frequency source is switched and the first detection result indicates that the frequency generated by the frequency source is in the locked state, the processor controls the ALC module to run, and in a case that the second detection result indicates that the amplitude value is in the locked state, the processor controls the attenuation module and the amplification module to run, and controls the radio frequency switch to be turned on.

4. A method of controlling the output of a radio frequency signal from a signal source, characterised by, The radio frequency signal output control method is applied to a signal source, the signal source comprising a frequency source, a radio frequency switch and a processor, the frequency source being connected with the radio frequency switch, and an output end of the processor being connected with the radio frequency switch; The radio frequency signal output control method of the signal source comprises: In the case that the frequency source is to be switched in frequency, the processor controls the radio frequency switch to be turned off, so as to prohibit the radio frequency signal output by the frequency source from being output from the radio frequency switch; In the case that the frequency source is switched in frequency and the processor determines that the frequency generated by the frequency source is in a locked state, the processor controls the radio frequency switch to be switched from the off state to the on state, so as to control the radio frequency signal to be output from the radio frequency switch.

5. The method according to claim 4, wherein The frequency source is switched in frequency, comprising: The frequency source receives frequency switching data configured by a user, and is switched in frequency according to the frequency switching data.

6. The radio frequency signal output control method of a signal source according to claim 4 or 5, characterized by, The signal source further comprises a frequency lock detection module, an input end of the frequency lock detection module being connected with the frequency source, and an output end of the frequency lock detection module being connected with an input end of the processor, for detecting whether the frequency generated by the frequency source is in a locked state; The processor determines that the frequency generated by the frequency source is in a locked state, comprising: The frequency lock detection module detects whether the frequency generated by the frequency source is in a locked state, and sends a first detection result indicating whether the frequency generated by the frequency source is in a locked state to the processor; In the case that the first detection result indicates that the frequency generated by the frequency source is in a locked state, the processor determines that the frequency generated by the frequency source is in a locked state.

7. The method according to claim 4, wherein The signal source further comprises an automatic level control (ALC) module, the frequency source being connected with the radio frequency switch through the ALC module, the ALC module being used for adjusting an amplitude value of the radio frequency signal output by the frequency source, and an output end of the processor being connected with the ALC module; The radio frequency signal output control method of the signal source comprises: The processor controls the ALC module to stop running; In the case that the frequency source is switched in frequency and the processor determines that the frequency generated by the frequency source is in a locked state, the processor controls the ALC module to run, and controls the radio frequency switch to be turned on in the case that the amplitude value of the radio frequency signal is determined to be in a locked state.

8. The method according to claim 7, wherein The signal source further comprises an amplitude lock detection module, an input end of the amplitude lock detection module being connected with the ALC module, and an output end of the amplitude lock detection module being connected with the processor, for detecting whether the amplitude value of the radio frequency signal is in a locked state; The processor determines that the amplitude value is in a locked state, comprising: The processor receives a second detection result sent by the amplitude lock detection module, the second detection result being used for indicating whether the amplitude value is in a locked state; In the case that the second detection result indicates that the amplitude value is in a locked state, the processor determines that the amplitude value is in a locked state.

9. The method according to claim 8, wherein Further comprising: The amplitude lock detection module detects whether the voltage value driving the amplitude value change of the radio frequency signal is a constant value; If the voltage value driving the amplitude value change of the radio frequency signal is a constant value, the amplitude lock detection module determines that the amplitude value of the radio frequency signal is in a locked state.

10. The method according to claim 7, wherein The signal source further comprises: an attenuation module for adjusting and compensating the amplitude value; and an amplification module for amplifying the power of the radio frequency signal; the attenuation module and the amplification module are connected in series between the ALC module and the radio frequency switch, or the attenuation module and the amplification module are arranged after the radio frequency switch and connected with the radio frequency switch; After the processor controls the radio frequency switch to be turned off, the processor further controls: After the processor controls the attenuation module to stop running and the amplification module to stop running, the processor controls the ALC module to stop running; In a case that the frequency source performs frequency switching and the processor determines that the frequency generated by the frequency source is in a locked state, the processor controls the ALC module to run, and in a case that the processor determines that the amplitude value of the radio frequency signal is in a locked state, the processor controls the attenuation module and the amplification module to run, and controls the radio frequency switch to be turned on.

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