Frequency mixing chip and monitoring equipment

Abstract

The invention provides a frequency mixing chip and monitoring equipment. The frequency mixing chip comprises an internal local oscillator, a multiplexer and a frequency mixer, the internal local oscillator is used for generating a first local oscillator signal according to a reference clock signal; the first input end of the multiplexer is connected with the second local oscillator signal, the second input end of the multiplexer is connected with the first local oscillator signal, and the output end of the multiplexer outputs a signal to be mixed; the frequency mixer is used for mixing the signal to be subjected to frequency shift and the signal to be subjected to frequency mixing to generate a frequency shift signal, and the frequency shift signal is used for monitoring signal power. Monitoring equipment using the chip can accurately detect wireless communication signals in a full frequency band. The signal detection device can realize optimal configuration of a wireless channel by detecting a full-band wireless communication signal, and realizes lower-cost configuration and indoor distribution configuration as well as higher-quality and higher-efficiency signal coverage.

Description

Technical Field

[0001] The present application belongs to the field of signal processing technology, and specifically relates to a frequency mixing chip and a monitoring device. Background Art

[0002] In a signal detection device, such as an antenna signal, a power detection device is used to measure the power level of the received RF signal. The power detection device is crucial to ensure the performance of the communication system because the power of the signal directly affects the coverage, quality and reliability of the signal.

[0003] Currently, the power detection device in the signal detection device usually only supports one-to-one detection of antenna signals in a single frequency band, and it is impossible to implement one device to monitor multiple antenna signals. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, a frequency mixing chip and a monitoring device are proposed. By using the frequency mixing chip and the monitoring device, wireless communication signals of the entire frequency band can be accurately detected.

[0005] This application provides the following solution.

[0006] In a first aspect, the present application provides a frequency mixing chip, comprising at least: an internal local oscillator, a multiplexer and a frequency mixer;

[0007] The internal local oscillator is used to generate a first local oscillator signal according to a reference clock signal;

[0008] The first input end of the multiplexer is connected to the second local oscillator signal, the second input end of the multiplexer is connected to the first local oscillator signal, and the output end of the multiplexer outputs the signal to be mixed;

[0009] The mixer is used to mix the signal to be frequency-shifted with the signal to be mixed to generate a frequency-shifted signal, which can be used for signal power monitoring.

[0010] In some possible embodiments, the mixer is configured as a dual-channel mixer.

[0011] In some possible embodiments, the dual-channel mixer includes a first mixer and a second mixer;

[0012] The first input end of the first mixer receives the signal to be frequency-shifted, the second input end of the first mixer receives the signal to be mixed, and the output end of the first mixer outputs the frequency-shifted signal;

[0013] The first input terminal of the second mixer receives the signal to be frequency-shifted, the second input terminal of the second mixer receives the signal to be mixed, and the output terminal of the second mixer outputs the frequency-shifted signal.

[0014] In some possible embodiments, the dual-channel mixer further includes a first amplifier and a second amplifier;

[0015] A first end of the first amplifier is connected to a first output end of the multiplexer, and a second end of the first amplifier is connected to a second input end of the first mixer;

[0016] A first end of the second amplifier is connected to the second output end of the multiplexer, and a second end of the second amplifier is connected to the second input end of the second mixer.

[0017] In some possible embodiments, the frequency mixing chip further includes: a controller;

[0018] The controller can be used to control the start and stop of the mixer chip.

[0019] In some possible embodiments, the frequency mixing chip is applied to a room signal detection device.

[0020] In a second aspect, the present application provides a monitoring device integrating the above-mentioned frequency mixing chip;

[0021] The output end of the frequency mixing chip is connected to the input end of the power detection device of the monitoring equipment.

[0022] In some possible embodiments, a switch module is further included;

[0023] The switch module is connected between the frequency mixing chip and the antenna.

[0024] In some possible embodiments, it further includes a data transmission module and a main control module;

[0025] The main control module is used to receive the detection result sent by the power detection device and send the detection result to the data transmission module;

[0026] The data transmission module transmits the detection results to the monitoring platform through the switch module and the antenna.

[0027] In some possible embodiments, it further includes: a power supply module;

[0028] The power module is used to supply power to the switch module, the mixer chip, the data transmission module and the power detection module;

[0029] The main control module is used to control the start and stop of the power module.

[0030] The frequency mixing chip provided in this application is applied to the antenna signal detection device, which can convert the input frequency mixing signal into a frequency-shifted signal of the target frequency band, and the power detection device can directly detect the power of the frequency-shifted signal. In this way, the signal detection device can accurately detect wireless communication signals in the entire frequency band. The monitoring equipment using this chip can optimize the configuration of the wireless channel by detecting wireless communication signals in the entire frequency band, achieve lower-cost configuration and indoor distribution configuration, and better quality and more efficient signal coverage.

[0031] Other advantages of the present application will be explained in more detail with reference to the following description and drawings.

[0032] It should be understood that the above description is only an overview of the technical solution of the present application, so that the technical means of the present application can be more clearly understood and implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are specifically described below by way of example. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The advantages and benefits described herein and other advantages and benefits will be apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only used for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0034] Figure 1 A schematic diagram of a frequency mixing chip provided in an embodiment of the present application;

[0035] Figure 2 A schematic diagram of a dual-channel frequency mixing chip provided in an embodiment of the present application;

[0036] Figure 3a A pin diagram of a dual-channel mixer chip provided in an embodiment of the present application;

[0037] Figure 3b A pin comparison table of a dual-channel mixer chip provided in an embodiment of the present application;

[0038] Figure 4 A schematic diagram of a monitoring device provided in an embodiment of the present application;

[0039] Figure 5 A schematic diagram of another monitoring device provided in an embodiment of the present application.

[0040] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts. DETAILED DESCRIPTION

[0041] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0042] In the description of the embodiments of the present application, it should be understood that terms such as "including" or "having" are intended to indicate the presence of disclosed features, numbers, steps, behaviors, components, parts, or combinations thereof in this specification, and do not exclude the possibility of the presence of one or more other features, numbers, steps, behaviors, components, parts, or combinations thereof. The terms "first", "second", etc. are used only for the convenience of description to distinguish the same or similar technical features, and cannot be understood as indicating or implying the relative importance or quantity of these technical features. Thus, the features defined by "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present application, unless otherwise specified, the term "plurality" means two or more than two.

[0043] Unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; “and / or” in this article is only a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. For the convenience of description, spatial relationship words such as “under”, “below”, “above”, “on”, etc. may be used here to describe the relationship between one element or feature shown in the drawings and other elements or features. It will be understood that these spatial relationship words are intended to include other directions of the device in use or operation in addition to the directions depicted in the drawings.

[0044] It should also be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0045] See also Figure 1 , an embodiment of the present application provides a schematic diagram of a mixing chip.

[0046] like Figure 1 As shown, the frequency mixing chip provided in the embodiment of the present application at least includes: an internal local oscillator 100, a multiplexer 200 and a frequency mixer 300;

[0047] The internal local oscillator 100 is used to generate a first local oscillator signal according to a reference clock signal;

[0048] The first input terminal of the multiplexer 200 is connected to the second local oscillator signal, the second input terminal of the multiplexer 200 is connected to the first local oscillator signal, and the output terminal of the multiplexer 200 outputs the signal to be mixed;

[0049] The mixer 300 is used to mix the signal to be frequency-shifted with the signal to be mixed to generate a frequency-shifted signal, which can be used for signal power monitoring.

[0050] It should be noted that the mixing chip provided in the embodiment of the present application can be applied to a room signal detection device, and can also be applied to other signal detection devices, which is not limited in the embodiment of the present application. The multiplexer in the embodiment of the present application can connect the first local oscillator signal and the second local oscillator signal, and can also connect other types of local oscillator signals, which is not limited in the present application. The multiplexer in the embodiment of the present application can select different local oscillator signals as mixing signals for output according to the specific mixing needs, so that the signal detection device can accurately detect wireless communication signals in the entire frequency band.

[0051] It can be seen that the frequency mixing chip provided by the present application is applied to the antenna signal detection device, and different frequency mixing signals can be output through the internal local oscillator and the multiplexer. The frequency mixing signal can convert the input frequency-shifted signal into a frequency-shifted signal of the target frequency band through the frequency mixing chip, and the power detection device can directly detect the power of the frequency-shifted signal. In this way, the signal detection device can accurately detect wireless communication signals of the full frequency band.

[0052] As a possible implementation, the mixer provided in the embodiment of the present application can be configured as a dual-channel mixer; the dual-channel mixer is used to mix two input differential signals with the mixing signal to generate two frequency-shifted signals. The mixer provided in the embodiment of the present application is specifically introduced below through an example.

[0053] In the embodiments of the present application, Figure 2 As shown, the dual-channel mixer may include a first mixer 301 and a second mixer 302. The first input terminal of the first mixer 301 receives the signal to be frequency-shifted, the second input terminal of the first mixer 301 receives the signal to be mixed, and the output terminal of the first mixer 301 outputs the frequency-shifted signal. The first input terminal of the second mixer 302 receives the signal to be frequency-shifted, the second input terminal of the second mixer 302 receives the signal to be mixed, and the output terminal of the second mixer 302 outputs the frequency-shifted signal.

[0054] like Figure 2As shown, the dual-channel mixer provided in the embodiment of the present application further includes a first amplifier 303 and a second amplifier 304. A first end of the first amplifier 303 is connected to a first output end of the multiplexer 200, and a second end of the first amplifier 303 is connected to a second input end of the first mixer 301. A first end of the second amplifier 304 is connected to a second output end of the multiplexer 200, and a second end of the second amplifier 304 is connected to a second input end of the second mixer 302.

[0055] As a possible implementation, the frequency mixing chip provided in the embodiment of the present application may further include: a controller 400. The controller 400 provided in the embodiment of the present application is used to control the start and stop of the frequency mixing chip.

[0056] The frequency mixing chip provided in the present application can be applied to a signal detection device, and is particularly suitable for the detection of antenna signals. Different frequency mixing signals can be output through an internal local oscillator and a multiplexer. The frequency mixing signal can convert the input signal to be frequency-shifted into a frequency-shifted signal of a target frequency band through the frequency mixing chip, and the power detection device can directly detect the power of the frequency-shifted signal. In this way, the signal detection device can accurately detect wireless communication signals of the entire frequency band. The monitoring equipment using the chip can optimize the configuration of the wireless channel by detecting wireless communication signals of the entire frequency band, achieve lower cost configuration and room configuration, and better quality and more efficient signal coverage. The frequency mixing chip provided in the embodiment of the present application is easy to deploy and has cost advantages. It can also be used for detection and can also be used to determine whether someone is illegally using some controlled frequency bands by detecting each frequency band.

[0057] Figure 3a This is a pin diagram of a dual-channel mixer chip provided in an embodiment of the present application, but the scope of the solution is not limited thereto. Figure 3b for Figure 3a Description of the pins in the table. The explanations in the table are the general explanations of the pins in the RF field that technical personnel in this field should know.

[0058] According to the mixing chip provided in the above embodiment, the embodiment of the present application also provides a monitoring device.

[0059] like Figure 4 As shown, the monitoring device provided in the embodiment of the present application includes a power detection device 20 and the mixing chip 10 in the above embodiment.

[0060] The output end of the frequency mixing chip 10 is connected to the input end of the power detection device 20 of the monitoring device;

[0061] The power detection device 20 is used to detect the power of the wireless communication signal.

[0062] As a possible implementation, Figure 5As shown, the monitoring device provided in the embodiment of the present application also includes a switch module 30 , a data transmission module 40 , a main control module 50 and a power supply module 60 .

[0063] The power module 60 provided in the embodiment of the present application is used to supply power to the switch module 30, the frequency mixer chip 10, the data transmission module 40 and the power detection module. The main control module 50 is used to receive the detection result sent by the power detection device 20, and send the detection result to the data transmission module 40. In actual applications, the main control module 50 can remain powered on after the initial startup. The main control module 50 controls the power on and off of the switch module 30, the frequency mixer chip 10, the data transmission module 40 and the power detection module by controlling the start and stop of the power module 60.

[0064] The switch module 30 provided in the embodiment of the present application is connected between the frequency mixing chip 10 and the antenna, and the switch module 30 is used to control the signal path between the frequency mixing chip 10 and the antenna. When the monitoring device in the embodiment of the present application works normally, the main control module 50 can control the switch module 30 to open, the frequency mixing chip 10 is turned on and configured with the required detection frequency, and the power detection module is also turned on, so that the antenna signal entering through the antenna is shifted by the frequency mixing chip 10 and will be detected by the power detection module. The data transmission module 40 provided in the embodiment of the present application can transmit the detection results to the monitoring platform through the switch module 30 and the antenna. After the monitoring platform receives the detection, if it is determined that the monitoring device has new requirements, it can issue instructions according to the new requirements, and finally convey them to the main control module 50 through the antenna, the switch module 30, and the data transmission module 40, and the main control module 50 outputs a control signal according to the instructions issued by the platform.

[0065] It should be noted that the monitoring device in the embodiment of the present application can convert the input signal to be frequency-shifted into a frequency-shifted signal of the target frequency band through a frequency mixing chip, and the power detection device can directly detect the power of the frequency-shifted signal. In this way, the signal detection device can accurately detect wireless communication signals in the entire frequency band. The signal detection device can optimize the configuration of the wireless channel by detecting wireless communication signals in the entire frequency band, achieve lower-cost configuration and room-based configuration, and better-quality and more efficient signal coverage.

[0066] Although the illustrative embodiments of the present application have been described and illustrated in detail in the drawings and the foregoing description, they should be considered illustrative rather than restrictive, and it should be understood that only certain exemplary embodiments have been shown and described and that all changes and modifications within the spirit of the claimed invention are intended to be protected. It should be understood that although the use of words such as preferred, preferred, preferred or more preferred in the above description indicates that the features described in this way may be more ideal, it may not be necessary and implementations without these features may be conceivable within the scope of the present invention, which scope is defined by the appended claims. When reading the claims, when words such as "one", "an", "at least one" or "at least one portion" are used, it is not intended to limit the claim to only one item, unless a contrary statement is specifically stated in the claim. When the language "at least a portion" and / or "a portion" is used, the item may include a portion and / or the entire item unless there is a specific statement to the contrary.

[0067] Although the spirit and principle of the present application have been described above with reference to several specific embodiments, it should be understood that the present application is not limited to the disclosed specific embodiments, and the division of various aspects does not mean that the features in these aspects cannot be combined. The present application is intended to cover various modifications and equivalent arrangements included in the spirit and scope of the attached claims.

Claims

1. A frequency mixing chip, characterized in that: At least including: an internal local oscillator, a multiplexer and a mixer; The internal local oscillator is used to generate a first local oscillator signal according to a reference clock signal; The first input end of the multiplexer is connected to the second local oscillator signal, the second input end of the multiplexer is connected to the first local oscillator signal, and the output end of the multiplexer outputs the signal to be mixed; The mixer is used to mix the signal to be frequency-shifted with the signal to be mixed to generate a frequency-shifted signal, and the frequency-shifted signal can be used for signal power monitoring.

2. The frequency mixing chip according to claim 1, characterized in that: The mixer is configured as a dual-channel mixer.

3. The frequency mixing chip according to claim 2, characterized in that: The dual-channel mixer includes a first mixer and a second mixer; A first input terminal of the first mixer receives the signal to be frequency-shifted, a second input terminal of the first mixer receives the mixing signal, and an output terminal of the first mixer outputs the frequency-shifted signal; The first input terminal of the second mixer receives the signal to be frequency-shifted, the second input terminal of the second mixer receives the mixing signal, and the output terminal of the second mixer outputs the frequency-shifted signal.

4. The frequency mixing chip according to claim 3, characterized in that: The dual-channel mixer also includes a first amplifier and a second amplifier; A first end of the first amplifier is connected to a first output end of the multiplexer, and a second end of the first amplifier is connected to a second input end of the first mixer; A first end of the second amplifier is connected to a second output end of the multiplexer, and a second end of the second amplifier is connected to a second input end of the second mixer.

5. The frequency mixing chip according to claim 1, characterized in that: The frequency mixing chip further includes: a controller; The controller can be used to control the start and stop of the frequency mixing chip.

6. The frequency mixing chip according to any one of claims 1 to 5, characterized in that: The frequency mixing chip is applied to a room signal detection device.

7. A monitoring device, characterized in that: Integrating the frequency mixing chip described in any one of claims 1 to 6; The output end of the frequency mixing chip is connected to the input end of the power detection device of the monitoring equipment.

8. The monitoring device according to claim 7, characterized in that Also included is a switch module; The switch module is connected between the frequency mixing chip and the antenna.

9. The monitoring device according to claim 8, characterized in that It also includes a data transmission module and a main control module; The main control module is used to receive the detection result sent by the power detection device, and send the detection result to the data transmission module; The data transmission module transmits the detection result to the monitoring platform through the switch module and the antenna.

10. The monitoring device according to claim 9, characterized in that Also includes: Power module; The power supply module is used to supply power to the switch module, the frequency mixing chip, the data transmission module and the power detection module; The main control module is used to control the start and stop of the power module.

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