CN219041779U - Single-double-circuit radio frequency switching device - Google Patents
Single-double-circuit radio frequency switching device Download PDFInfo
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- CN219041779U CN219041779U CN202320026835.9U CN202320026835U CN219041779U CN 219041779 U CN219041779 U CN 219041779U CN 202320026835 U CN202320026835 U CN 202320026835U CN 219041779 U CN219041779 U CN 219041779U
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Abstract
The application discloses a single-double-circuit radio frequency switching device, which comprises a single-double-circuit switching module and a power detection module; the single-double-path switching module comprises a first radio frequency switch, a second radio frequency switch and a microstrip power divider, wherein the output end of the first radio frequency switch is connected with the input end of the microstrip power divider, the first output end of the microstrip power divider is connected with the input end of the second radio frequency switch, and the second output end of the microstrip power divider and the output end of the second radio frequency switch are both connected with the power detection module; the power detection module is used for detecting whether the output power is normal or not; when the first radio frequency switch is opened and the second radio frequency switch is closed, the single-path and double-path radio frequency switching device outputs radio frequency signals in a single path; when the first radio frequency switch and the second radio frequency switch are both opened, the single-path and double-path radio frequency switching device is switched into double-path output. The utility model realizes the switching between high-power single-path output and double-path output, can select an output mode according to requirements and environmental conditions, and has the advantages of strong flexibility, strong applicability, safety and reliability.
Description
Technical Field
The present application relates to the field of antennas and wireless communications technologies, and in particular, to a single/double-channel radio frequency switching device.
Background
In a wireless communication system, a radio frequency power amplifier is a key component for realizing wireless transmission of radio frequency signals, and has the functions of amplifying small signals generated by a modulation circuit and radiating the small signals through an antenna, wherein the performance of the small signals directly influences the communication quality, the signal emission intensity and the like of the system. The power transmitting device is used as a simple communication tool, and can realize simple mobile communication without a transfer station, so that the power transmitting device is widely applied to small-range mobile communication projects such as production, security, field projects and the like. However, the existing power transmitting device only has the function of amplifying signals, and cannot select one-way operation or two-way operation.
Disclosure of Invention
Aiming at least one defect or improvement demand of the prior art, the utility model provides a single-double-channel radio frequency switching device, which realizes high-power single-channel output and double-channel output switching, can select an output mode according to the demand and the environmental condition, and has strong flexibility and applicability, and is safe and reliable.
In order to achieve the above object, according to one aspect of the present utility model, there is provided a single-dual radio frequency switching device, which includes a single-dual switching module and a power detection module;
the single-double-circuit switching module comprises a first radio frequency switch, a second radio frequency switch and a microstrip power divider, wherein the output end of the first radio frequency switch is connected with the input end of the microstrip power divider, the first output end of the microstrip power divider is connected with the input end of the second radio frequency switch, and the second output end of the microstrip power divider and the output end of the second radio frequency switch are both connected with the power detection module.
Further, in the Shan Shuanglu radio frequency switching device, the power detection module includes a first power detection sub-module and a second power detection sub-module, the first power detection sub-module is connected with the second output end of the microstrip power divider, and the second power detection sub-module is connected with the output end of the second radio frequency switch.
Further, in the Shan Shuanglu radio frequency switching device, the first power detection sub-module and the second power detection sub-module each include a microstrip coupler, a detector and an operational amplifier which are sequentially connected; wherein,,
the detector is used for converting the coupling signal output by the microstrip coupler into direct-current voltage; the operational amplifier is used for amplifying the direct-current voltage.
Further, the Shan Shuanglu radio frequency switching device further comprises an amplifying module, wherein the amplifying module comprises a power amplification tube, an isolator and a cavity filter which are connected in sequence;
the isolator is used for protecting the power amplification tube, and the cavity filter is used for filtering clutter signals in the amplified radio frequency signals.
Further, the Shan Shuanglu radio frequency switching device further comprises a power module, wherein the power module is connected with the amplifying module and provides forward voltage, reverse voltage and enabling control level for the amplifying module through time sequence control;
the power module is respectively connected with the single-double-circuit switching module and the power detection module and is used for providing forward voltage, reverse voltage and enabling control level for the single-double-circuit switching module and the power detection module through time sequence control.
Further, the Shan Shuanglu radio frequency switching device further comprises a first pi-shaped attenuator, a power amplifier and a second pi-shaped attenuator which are sequentially connected;
the first pi-shaped attenuator is connected with the input end of the single-double-path radio frequency switching device and is used for carrying out attenuation treatment on radio frequency input signals;
the second pi-shaped attenuator is connected with the input end of the amplifying module and is used for carrying out impedance matching;
the power amplifier is also connected with the power module, and the power module provides working voltage for the power module
In general, the above technical solutions conceived by the present utility model, compared with the prior art, enable the following beneficial effects to be obtained:
(1) The single-circuit and double-circuit radio frequency switching device provided by the utility model realizes high-power single-circuit output and double-circuit output switching through the two radio frequency switches and the microstrip power divider, and can select an output mode according to requirements and environmental conditions.
(2) According to the single-double-circuit radio frequency switching device provided by the utility model, the abnormality of output power can be detected through the power detection circuit, and whether the power amplifier works normally or not is inquired according to the detected detection voltage feedback, so that the rapid fault positioning is realized;
(3) According to the single-circuit and double-circuit radio frequency switching device provided by the utility model, clutter can be filtered through the cavity filter, so that the high harmonic clutter suppression degree is realized, and the harmonic clutter suppression degree is more than 60dB.
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 embodiments 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 these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a single-path and double-path radio frequency switching device according to an embodiment of the present application.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
The terms first, second, third and the like in the description and in the claims of the application and in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Fig. 1 is a schematic structural diagram of a single-dual radio frequency switching device provided in an embodiment of the present application, please refer to fig. 1. The device comprises an amplifying module, a single-double switching module, a power detection module and a power supply module.
Specifically, the amplifying module includes a power amplifying tube, an isolator and a cavity filter which are sequentially connected, wherein, the radio frequency signal input to the single-double-path radio frequency switching device is amplified and attenuated and then is input to the amplifying module, the amplified signal is first amplified through the power amplifying tube, the cavity filter filters the out-of-band spurious signals, so as to ensure that the harmonic spurious suppression degree of the amplified signal is high, and in a specific embodiment, the harmonic spurious suppression degree is greater than 60dB. The isolator is used for protecting the power amplification tube, and the amplified signals firstly pass through the isolator after being amplified, so that the power amplification tube working failure caused by the reflection of the amplified signals back to the power amplification tube is prevented. The power module is connected with the power amplifier tube, and the power amplifier tube can work normally only by adding negative pressure and then positive pressure, and the power module provides +28V, -5V and EN control level for the power amplifier tube through a time sequence control program.
The single-double-circuit switching module comprises a first radio frequency switch, a second radio frequency switch and a microstrip power divider, wherein the input end of the first radio frequency switch is connected with the output end of the cavity filter, the output end of the first radio frequency switch is connected with the input end of the microstrip power divider, and the first output end of the microstrip power divider is connected with the input end of the second radio frequency switch. When the first radio frequency switch is opened and the second radio frequency switch is closed, the single-path 10W signal output is realized by the single-path two-path radio frequency switching device; when the first radio frequency switch and the second radio frequency switch are both opened, the single-double-circuit radio frequency switching device is switched into double-circuit 5W signal output.
The power detection module comprises a first power detection sub-module and a second power detection sub-module, the first power detection sub-module is connected with the second output end of the microstrip power divider, and the second power detection sub-module is connected with the output end of the second radio frequency switch. The power detection module is used for detecting whether the output power of the single-path and double-path switching module is normal. Specifically, the first power detection sub-module and the second power detection sub-module each include a microstrip coupler, a detector and an operational amplifier which are sequentially connected, the microstrip coupler adopts a traditional microstrip coupling mode to couple signals from a link, in a specific embodiment, the coupled signals are converted into direct-current voltage through the logarithmic detector to be output, and the output direct-current voltage is converted into a required voltage through the operational amplifier. When the output signal is coupled to the detector after passing through the coupler, the detector converts the power into voltage for output, and when the detected voltage is abnormal, the output power abnormality can be judged.
The power module comprises a power supply module, a power filter and a power conversion chip, wherein the power supply module is respectively connected with the amplifying module, the single-double switching module and the power detection module, and in a specific embodiment, the power supply module provides +28V and-5V, EN control level for the amplifying module and provides +5V working voltage for the single-double switching module and the power detection module.
Further, the radio frequency signal input to the single-double-path radio frequency switching device can be input to the amplifying module after being amplified, attenuated and the like. The output end of the single-double-path radio frequency switching device is provided with a first pi-shaped attenuator, a power amplifier and a second pi-shaped attenuator which are connected in sequence. The first pi-shaped attenuator is used for carrying out attenuation treatment on radio frequency input signals, the second pi-shaped attenuator is connected with the input end of the amplifying module and used for carrying out impedance matching, the power amplifier is also connected with the power module, and the power module provides working voltage for the power module.
It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of action combinations, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required in the present application.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, such as the division of the units, merely a logical function division, and there may be additional manners of dividing the actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed.
The foregoing is merely exemplary embodiments of the present disclosure and is not intended to limit the scope of the present disclosure. That is, equivalent changes and modifications are contemplated by the teachings of this disclosure, which fall within the scope of the present disclosure. Embodiments of the present disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a scope and spirit of the disclosure being indicated by the claims.
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.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (6)
1. The single-double-circuit radio frequency switching device is characterized by comprising a single-double-circuit switching module and a power detection module;
the single-double-circuit switching module comprises a first radio frequency switch, a second radio frequency switch and a microstrip power divider, wherein the output end of the first radio frequency switch is connected with the input end of the microstrip power divider, the first output end of the microstrip power divider is connected with the input end of the second radio frequency switch, and the second output end of the microstrip power divider and the output end of the second radio frequency switch are both connected with the input end of the power detection module.
2. The single-and-double-path radio frequency switching device as claimed in claim 1, wherein the power detection module comprises a first power detection sub-module and a second power detection sub-module, the first power detection sub-module is connected with the second output end of the microstrip power divider, and the second power detection sub-module is connected with the output end of the second radio frequency switch.
3. The single-dual radio frequency switching device of claim 2, wherein the first power detection sub-module and the second power detection sub-module each comprise a microstrip coupler, a detector and an operational amplifier connected in sequence; wherein,,
the detector is used for converting the coupling signal output by the microstrip coupler into direct-current voltage; the operational amplifier is used for amplifying the direct-current voltage.
4. The single-dual radio frequency switching device of claim 1, further comprising an amplifying module comprising a power amplifier tube, an isolator and a cavity filter connected in sequence;
the isolator is used for protecting the power amplification tube, and the cavity filter is used for filtering clutter signals in the amplified radio frequency signals.
5. The single-dual radio frequency switching device of claim 4, further comprising a power module connected to the amplifying module for providing a forward voltage, a reverse voltage and an enable control level to the amplifying module through timing control;
the power module is respectively connected with the single-double-circuit switching module and the power detection module and is used for providing forward voltage, reverse voltage and enabling control level for the single-double-circuit switching module and the power detection module through time sequence control.
6. The single-dual radio frequency switching device of claim 5, further comprising a first pi-type attenuator, a power amplifier, and a second pi-type attenuator connected in sequence;
the first pi-shaped attenuator is connected with the input end of the single-double-path radio frequency switching device and is used for carrying out attenuation treatment on radio frequency input signals;
the second pi-shaped attenuator is connected with the input end of the amplifying module and is used for carrying out impedance matching;
the power amplifier is also connected with the power supply module, and the power supply module provides working voltage for the power amplifier.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320026835.9U CN219041779U (en) | 2023-01-04 | 2023-01-04 | Single-double-circuit radio frequency switching device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320026835.9U CN219041779U (en) | 2023-01-04 | 2023-01-04 | Single-double-circuit radio frequency switching device |
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| CN219041779U true CN219041779U (en) | 2023-05-16 |
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| CN202320026835.9U Active CN219041779U (en) | 2023-01-04 | 2023-01-04 | Single-double-circuit radio frequency switching device |
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