Four-output microwave frequency demultiplier

Abstract

The utility model relates to the field of microwave communication, and provides a four-output microwave frequency demultiplier which comprises a radio frequency amplification module, a power supply and signal switching module connected with the radio frequency amplification module, a frequency oscillation starting module connected with the power supply and signal switching module and an intermediate frequency output module connected with the power supply and signal switching module. The radio frequency amplification module amplifies the first radio frequency signal to obtain a horizontal polarization amplification signal, amplifies the second radio frequency signal to obtain a vertical polarization amplification signal, and outputs the horizontal polarization amplification signal and the vertical polarization amplification signal to the power supply and signal switching module; the power supply and signal switching module provides working voltage for the radio frequency amplification module, and four paths of intermediate frequency signals are obtained after the local oscillation frequency provided by the frequency oscillation starting module is mixed with the horizontal polarization amplification signal and the vertical polarization amplification signal; and the intermediate frequency output module provides a power supply for the power supply and signal switching module and outputs four paths of intermediate frequency signals obtained by the power supply and signal switching module. The size of the four-output microwave frequency demultiplier is relatively small, and the product cost can be reduced.

Description

Technical Field

[0001] The present application relates to the field of microwave communication, and particularly to a four-output microwave down-converter. Background Art

[0002] A microwave down-converter is an electronic component that converts high-frequency microwave signals into intermediate-frequency signals, and is widely used in fields such as satellite communication, radar systems, and radio receivers. Taking satellite communication as an example, microwave down-converters are usually used to convert high-speed data streams received from satellites into low-speed digital signals for processing. However, in existing multi-output microwave down-converters, for example, four-output microwave down-converters, due to the complex design of the radio frequency amplification module part, the size of the entire multi-output microwave down-converter becomes larger, which brings inconvenience to product installation, testing, etc., and also leads to an increase in the cost of the entire product. Summary of the Utility Model

[0003] The present application provides a four-output microwave down-converter with a relatively small size, which can reduce the cost of the product.

[0004] The present application provides a four-output microwave down-converter, which includes a radio frequency amplification module, a power supply and signal switching module connected to the radio frequency amplification module, a frequency oscillation module connected to the power supply and signal switching module, and an intermediate frequency output module connected to the power supply and signal switching module. The power supply and signal switching module at least includes a power supply unit and a signal switching unit;

[0005] The radio frequency amplification module is used to amplify the first radio frequency signal to obtain a horizontally polarized amplified signal, amplify the second radio frequency signal to obtain a vertically polarized amplified signal, and output the horizontally polarized amplified signal and the vertically polarized amplified signal to the power supply and signal switching module;

[0006] The power supply and signal switching module is used to provide a working voltage for the radio frequency amplification module, and mix the local oscillation frequency provided by the frequency oscillation module with the horizontally polarized amplified signal and the vertically polarized amplified signal to obtain four intermediate frequency signals;

[0007] The intermediate frequency output module is used to provide power for the power supply and signal switching module, and output the four intermediate frequency signals obtained by the power supply and signal switching module.

[0008] As can be seen from the technical solution provided by the present application above, since the circuit of the radio frequency amplification module of the four-output microwave down-converter is streamlined and only includes two triodes and two resistors, the size of the printed circuit board and the structural parts of the four-output microwave down-converter are both reduced, thereby reducing the size of the entire four-output microwave down-converter and also reducing the cost of the entire product. Description of the Drawings

[0009] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0010] Figure 1 is a schematic structural diagram of a four-output microwave downconverter provided by an embodiment of the present application;

[0011] Figure 2 is a schematic structural diagram of a four-output microwave downconverter provided by another embodiment of the present application;

[0012] Figure 3 is a schematic structural diagram of a four-output microwave downconverter provided by another embodiment of the present application. Detailed implementation manners

[0013] The following will describe the embodiments of the present application in more detail with reference to the drawings. Although the embodiments of the present application are shown in the 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 make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0014] The terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The singular forms "a", "the" and "said" used in the present application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0015] It should be understood that although the terms "first", "second", "third", etc. may be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0016] In the specification of the present application, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0017] A microwave downconverter is an electronic component that converts high-frequency microwave signals into intermediate-frequency signals and is widely used in fields such as satellite communication, radar systems, and radio receivers. Taking satellite communication as an example, microwave downconverters are usually used to convert the high-speed data stream received from satellites into low-speed digital signals for processing. However, for existing multi-output microwave downconverters, such as four-output microwave downconverters, due to the complex design of the radio frequency amplification module part, the size of the entire multi-output microwave downconverter becomes relatively large, which brings inconvenience to product installation, testing, etc., and also leads to an increase in the cost of the entire product.

[0018] In view of the above problems, an embodiment of the present application provides a four-output microwave downconverter with a relatively small size, which can reduce the cost of the product.

[0019] As shown in the Figure 1 accompanying drawings, a schematic structural diagram of a four-output microwave downconverter proposed by the present application is shown. The following will describe in detail the four-output microwave downconverter of the present application in conjunction with Figure 1 this.

[0020] Figure 1 The exemplary four-output microwave downconverter mainly includes a radio frequency amplification module 101, a power supply and signal switching module 102 connected to the radio frequency amplification module 101, a frequency oscillation module 103 connected to the power supply and signal switching module 102, and an intermediate frequency output module 104 connected to the power supply and signal switching module 102. The power supply and signal switching module 102 includes at least a power supply unit 1021 and a signal switching unit 1022.

[0021] The above-mentioned radio frequency amplification module 101 amplifies the first radio frequency signal to obtain a horizontally polarized amplified signal, amplifies the second radio frequency signal to obtain a vertically polarized amplified signal, and outputs the horizontally polarized amplified signal and the vertically polarized amplified signal to the power supply and signal switching module. Among them, the first radio frequency signal is obtained by polarizing the microwave signal from the satellite into a horizontally polarized signal through a polarization converter at the front end of the antenna, and the second radio frequency signal is obtained by polarizing the microwave signal from the satellite into a vertically polarized signal through a polarization converter at the front end of the antenna. The field effect transistors in the radio frequency amplification module 101 gradually amplify the horizontally polarized signal into a horizontally polarized amplified signal and gradually amplify the vertically polarized signal into a vertically polarized amplified signal. The horizontally polarized amplified signal and the vertically polarized amplified signal are used as two signals and are respectively output from the radio frequency amplification module 101 to the power supply and signal switching module.

[0022] The power supply and signal switching module 102 includes a power supply unit 1021 and a signal switching unit 1022, which are used to provide a working voltage for the radio frequency amplification module and mix the local oscillation frequency provided by the frequency oscillation module with the horizontally polarized amplified signal and the vertically polarized amplified signal to obtain four intermediate frequency signals.

[0023] As for the intermediate frequency output module 104, it mainly provides power for the radio frequency amplification module 101 and the power supply and signal switching module 102, and outputs the four-way intermediate frequency signals obtained by the power supply and signal switching module 102. For example, it outputs to terminal devices such as set-top boxes.

[0024] From the above attached Figure 1 It can be seen from the exemplary microwave downconverter that since the circuit of the radio frequency amplification module of the four-output microwave downconverter is streamlined and only includes two triodes and two resistors, the printed circuit board and the structural parts of the four-output microwave downconverter are both reduced in size, thereby reducing the size of the entire four-output microwave downconverter and also reducing the cost of the entire product.

[0025] In an embodiment of the present application, the frequency oscillation module 103 provides a first local oscillation frequency and a second local oscillation frequency. The signal switching unit 1022 is used to mix the first local oscillation frequency with the horizontally polarized amplified signal and the vertically polarized amplified signal to obtain two-way intermediate frequency signals and output them to the intermediate frequency output module, and mix the second local oscillation frequency with the horizontally polarized amplified signal and the vertically polarized amplified signal to obtain two-way intermediate frequency signals and output them to the intermediate frequency output module

[0026] In an embodiment of the present application, the frequency oscillation module 103 includes a 25 MHz crystal oscillator. The crystal oscillator and the power supply and signal switching module 102 generate two local oscillation frequencies, namely the first local oscillation frequency and the second local oscillation frequency. These local oscillation frequencies are then mixed with the horizontally polarized amplified signal and the vertically polarized amplified signal to obtain four-way intermediate frequency signals. Specifically, the frequency oscillation module 103 and the power supply and signal switching module 102 generate nuclear oscillations to generate local oscillation frequencies of 9.75 GHz and 10.6 GHz. Among them, the local oscillation frequency of 9.75 GHz is mixed with one-way horizontally polarized amplified signal and one-way vertically polarized amplified signal from the power supply and signal switching module 102 to obtain four-way intermediate frequency signals with a low frequency band of 950 MHz to 1950 MHz. The local oscillation frequency of 10.6 GHz is mixed with one-way horizontally polarized amplified signal and one-way vertically polarized amplified signal from the power supply and signal switching module 102 to obtain two-way intermediate frequency signals with a high frequency band of 1100 MHz to 2150 MHz, and finally four-way intermediate frequency signals are obtained.

[0027] Refer to the attached Figure 2 , which is a four-output microwave downconverter provided by an embodiment of the present application. In Figure 2 the exemplary four-output microwave downconverter, Figure 1The exemplary radio frequency amplification module 101 includes a first triode 201, a first resistor 202 with one end connected to the emitter of the first triode 201, a second triode 203, and a second resistor 204 with one end connected to the emitter of the second triode 203. The other end of the first resistor 202 is connected to the power supply and signal switching module 102, and the other end of the second resistor 204 is connected to the power supply and signal switching module 102. The collectors of both the first triode 201 and the second triode 203 are grounded. The first triode 201 amplifies the first radio frequency signal to obtain a horizontally polarized amplified signal and outputs it to the power supply and signal switching module 102. The second triode 203 amplifies the second radio frequency signal to obtain a vertically polarized amplified signal and outputs it to the power supply and signal switching module 102.

[0028] Please refer to Figure 3 , which is a schematic structural diagram of a four-output microwave downconverter provided by another embodiment of the present application. Figure 3 The exemplary intermediate frequency output module includes a first path intermediate frequency signal output unit composed of a first capacitor C 1 , a second capacitor C 2 , a third capacitor C 3 , a first resistor R 1 , a first inductor L 1 and a first voltage regulator tube, a second path intermediate frequency signal output unit composed of a fourth capacitor C 4 , a fifth capacitor C 5 , a sixth capacitor C 6 , a second resistor R 2 , a second inductor L 2 and a second voltage regulator tube, a third path intermediate frequency signal output unit composed of a ninth capacitor C 9 , a tenth capacitor C 10 , an eleventh capacitor C 11 , a fifth resistor R 5 , a third inductor L 3 and a third voltage regulator tube, a fourth path intermediate frequency signal output unit composed of a twelfth capacitor C 12 , a thirteenth capacitor C 13 , a fourteenth capacitor C 14 , a sixth resistor R 6 , a fourth inductor L 4 and a fourth voltage regulator tube, and a gear shifting circuit composed of a seventh capacitor C 7 , an eighth capacitor C 8 , a third resistor R 3 and a fourth resistor R 4 . Among them, the first voltage regulator tube, the second voltage regulator tube, the third voltage regulator tube, and the fourth voltage regulator tube can be voltage regulators or voltage regulator tubes with a model of 7806. The seventh capacitor C 7 , the eighth capacitor C 8 , the third resistor R3 and the fourth resistor R 4 have their first ends connected to the 13th, 14th, 15th, and 16th pins of the power supply and signal switching module 102 respectively, and the seventh capacitor C 7 , the eighth capacitor C 8 , the third resistor R 3 and the fourth resistor R 4 have their second ends all grounded.

[0029] In the above Figure 3 example of the intermediate frequency output module, the first end of the first capacitor C 1 is connected to the first pin of the power supply and signal switching module 102, and the second end is connected to the first end of the first resistor R 1 . The input terminal, ground terminal, and output terminal of the first voltage regulator diode are connected to the first end of the second capacitor C 2 , ground, and the first end of the third capacitor C 3 respectively. The second end of the second capacitor C 2 is connected to the second pin of the power supply and signal switching module 102, and the second end of the third capacitor C 3 is connected to the first end of the first inductor L 1 and then connected to the third pin of the power supply and signal switching module 102. The second end of the first inductor L 1 is connected to the second end of the first resistor R 1 . After the above components are connected, they form the first intermediate frequency signal output unit, and the first intermediate frequency signal is output from the connection point of the second end of the first inductor L 1 and the second end of the first resistor R 1 . The first end of the second resistor R 2 is connected to the fourth pin of the power supply and signal switching module 102, and the second end is connected to the first end of the fourth capacitor C 4 . The input terminal, ground terminal, and output terminal of the second voltage regulator diode are connected to the first end of the fifth capacitor C 5 , ground, and the first end of the sixth capacitor C 6 respectively. The second end of the fifth capacitor C 5 is connected to the fifth pin of the power supply and signal switching module 102, and the second end of the sixth capacitor C 6 is connected to the first end of the second inductor L 2 and then connected to the sixth pin of the power supply and signal switching module 102. The second end of the second inductor L 2 is connected to the second end of the fourth capacitor C 4 . After the above components are connected, they form the second intermediate frequency signal output unit, and the second intermediate frequency signal is output from the connection point of the second end of the second inductor L 2 and the second end of the fourth capacitor C 4 . The fifth resistor R 5Its first end is connected to the seventh pin of the power supply and signal switching module 102, and the second end is connected to the first end of the ninth capacitor C 9 The first end of is connected, and the input terminal, ground terminal, and output terminal of the third voltage regulator diode are respectively connected to the first end of the tenth capacitor C 10 The first end of, ground, and the first end of the eleventh capacitor C 11 The first end of is connected, and the second end of the tenth capacitor C 10 Is connected to the eighth pin of the power supply and signal switching module 102, and the second end of the eleventh capacitor C 11 Is connected to the first end of the third inductor L 3 After the first end of is connected, it is connected to the ninth pin of the power supply and signal switching module 102. The second end of the third inductor L 3 Is connected to the second end of the ninth capacitor C 9 The second end of. After the above components are connected, they form a third intermediate frequency signal output unit. The third intermediate frequency signal is output from the connection point of the second end of the third inductor L 3 The second end of and the second end of the ninth capacitor C 9 The connection point of the second end of. The first end of the twelfth capacitor C 12 Is connected to the tenth pin of the power supply and signal switching module 102, and the second end is connected to the first end of the sixth resistor R 6 The input terminal, ground terminal, and output terminal of the fourth voltage regulator diode are respectively connected to the first end of the thirteenth capacitor C 13 The first end of, ground, and the first end of the fourteenth capacitor C 14 The first end of is connected, and the second end of the thirteenth capacitor C 13 Is connected to the eleventh pin of the power supply and signal switching module 102, and the second end of the fourteenth capacitor C 14 Is connected to the first end of the fourth inductor L 4 After the first end of is connected, it is connected to the twelfth pin of the power supply and signal switching module 102. The second end of the fourth inductor L 4 Is connected to the second end of the sixth resistor R 6 The second end of. After the above components are connected, they form a fourth intermediate frequency signal output unit. The fourth intermediate frequency signal is output from the connection point of the second end of the fourth inductor L 4 The second end of and the second end of the sixth resistor R 6 The connection point of the second end of.

[0030] Since the four intermediate frequency signals are symmetrically output, therefore, the components of the same type at the corresponding positions of the four intermediate frequency signal output units can take the same value. For example, the first capacitor C 1 , the fourth capacitor C 4 , the ninth capacitor C 9 And the twelfth capacitor C 12 Can be capacitors with equal capacitance values. The first resistor R 1 , the second resistor R 2 , the fifth resistor R 5 And the sixth resistor R 6can be resistors with equal resistance values, the first inductor L 1 , the second inductor L 2 , the third inductor L 3 and the fourth inductor L 4 can be inductors with equal inductance values, and so on.

[0031] Those skilled in the art can clearly understand that, for the convenience and conciseness of description, only the above-mentioned division of each functional unit and module is used as an example. In practical applications, the above-mentioned functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiments can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction and do not limit the protection scope of this application. The specific working processes of the units and modules in the above-mentioned device can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0032] In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not detailed or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0033] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or by a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0034] In the embodiments provided in this application, it should be understood that the disclosed device / equipment and method can be implemented in other ways. For example, the device / equipment embodiments described above are merely illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection to each other can be through some interfaces. The indirect coupling or communication connection of the device or unit can be in an electrical, mechanical or other form.

[0035] The units described as separation components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or may be distributed across multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0036] In addition, each functional unit in various embodiments of the present application may be integrated in a processing unit, may exist physically separately for each unit, or two or more units may be integrated in one unit.

[0037] The above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included within the protection scope of the present application. The specific implementation manners described above further elaborate on the purpose, technical solutions, and beneficial effects of the present application. It should be understood that the above is only the specific implementation manner of the present application and is not used to limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application should all be included within the protection scope of the present invention.

Claims

1. A four-output microwave downconverter, characterized in that: The four-output microwave frequency downconverter comprises a radio frequency amplification module, a power supply and signal switching module connected to the radio frequency amplification module, a frequency oscillation module connected to the power supply and signal switching module, and an intermediate frequency output module connected to the power supply and signal switching module, wherein the power supply and signal switching module comprises at least a power supply unit and a signal switching unit; The RF amplification module is used to obtain a horizontally polarized amplified signal after amplifying the first RF signal, obtain a vertically polarized amplified signal after amplifying the second RF signal, and output the horizontally polarized amplified signal and the vertically polarized amplified signal to the power supply and signal switching module; The power supply and signal switching module is used to provide a working voltage for the radio frequency amplification module, and to mix the local oscillation frequency provided by the frequency oscillation module with the horizontal polarization amplified signal and the vertical polarization amplified signal to obtain four intermediate frequency signals; The intermediate frequency output module is used to provide power to the power supply and signal switching module and output the four intermediate frequency signals obtained by the power supply and signal switching module.

2. The quad-output microwave downconverter according to claim 1, characterized in that: The frequency oscillation module provides a first local oscillation frequency and a second local oscillation frequency.

3. The quad-output microwave downconverter according to claim 2, characterized in that: The signal switching unit is used to mix the first local oscillator frequency with the horizontally polarized amplified signal and the vertically polarized amplified signal to obtain two intermediate frequency signals, which are output to the intermediate frequency output module; and mix the second local oscillator frequency with the horizontally polarized amplified signal and the vertically polarized amplified signal to obtain two intermediate frequency signals, which are output to the intermediate frequency output module.

4. The quad-output microwave downconverter according to claim 1, characterized in that: The RF amplification module includes a first transistor, a first resistor having one end connected to the emitter of the first transistor, a second transistor, and a second resistor having one end connected to the emitter of the second transistor, the other end of the first resistor is connected to the power supply and signal switching module, and the other end of the second resistor is connected to the power supply and signal switching module.

5. The microwave downconverter according to claim 4, characterized in that: The first transistor amplifies the first RF signal to obtain a horizontally polarized amplified signal, and outputs the signal to the power supply and signal switching module. The second transistor amplifies the second RF signal to obtain a vertically polarized amplified signal, and outputs the signal to the power supply and signal switching module.

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