Four-output microwave frequency demultiplier

Abstract

The invention 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 communications, and in particular to a four-output microwave downconverter. Background Art

[0002] A microwave downconverter is an electronic component that converts high-frequency microwave signals into intermediate-frequency signals. It is widely used in fields such as satellite communications, radar systems, and radio receivers. Taking satellite communications as an example, microwave downconverters are usually used to convert high-speed data streams received from satellites into low-speed digital signals for processing. However, existing multi-output microwave downconverters, for example, quad-output microwave downconverters, have a complex design of the RF amplification module, which results in a larger size of the entire multi-output microwave downconverter, which brings inconvenience to product installation and testing, and also leads to an increase in the cost of the entire product. Summary of the invention

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

[0004] The present application provides a four-output microwave frequency 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, wherein the power supply and signal switching module includes at least a power supply unit and a signal switching unit;

[0005] 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;

[0006] 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;

[0007] 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.

[0008] From the technical solution provided in the present application, it can be seen that since the circuit of the RF amplification module of the four-output microwave downconverter is simplified to include only two transistors and two resistors, the size of the printed circuit board and structural components of the four-output microwave downconverter are reduced, thereby reducing the size of the entire four-output microwave downconverter and reducing the cost of the entire product. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

[0012] Figure 3 It is a structural schematic diagram of a four-output microwave downconverter provided in another embodiment of the present application. DETAILED DESCRIPTION

[0013] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the 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 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 this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. 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 associated listed items.

[0015] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this 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 this 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 as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and 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. It is widely used in satellite communications, radar systems, and radio receivers. Taking satellite communications as an example, microwave downconverters are usually used to convert high-speed data streams received from satellites into low-speed digital signals for processing. However, existing multi-output microwave downconverters, such as quad-output microwave downconverters, have a complex design of the RF amplification module, which results in a larger size of the entire multi-output microwave downconverter, which brings inconvenience to product installation and testing, 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, which has a relatively small size and can reduce the cost of the product.

[0019] As attached Figure 1 FIG. 1 is a schematic diagram of the structure of a four-output microwave frequency converter proposed in this application. Figure 1 , a four-output microwave downconverter of the present application is described in detail.

[0020] Figure 1 The example four-output microwave frequency converter 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 RF amplification module 101 obtains a horizontally polarized amplified signal after amplifying the first RF signal, and obtains a vertically polarized amplified signal after amplifying the second RF 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 RF signal is polarized into a horizontally polarized signal by a polarization converter at the front end of the antenna, and the second RF signal is polarized into a vertically polarized signal by a polarization converter at the front end of the antenna. The field effect transistor in the RF amplification module 101 amplifies the horizontally polarized signal step by step into a horizontally polarized amplified signal, and amplifies the vertically polarized signal step by step into a vertically polarized amplified signal. The horizontally polarized amplified signal and the vertically polarized amplified signal are output from the RF amplification module 101 as two signals to the power supply and signal switching module respectively.

[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 RF amplification module and mix the local oscillation frequency provided by the frequency oscillation module with the horizontal polarization amplification signal and the vertical polarization amplification signal to obtain four intermediate frequency signals.

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

[0024] From the above attached Figure 1 It can be seen from the example microwave downconverter that since the circuit of the RF amplification module of the four-output microwave downconverter is simplified to include only two transistors and two resistors, the size of the printed circuit board and structural parts of the four-output microwave downconverter are reduced, thereby reducing the size of the entire four-output microwave downconverter and reducing the cost of the entire product.

[0025] In one embodiment of the present application, the frequency oscillation module 103 provides a first local oscillation frequency and a second local oscillation frequency, and the signal switching unit 1022 is used to mix the first local oscillation frequency with the horizontal polarization amplified signal and the vertical polarization amplified signal to obtain two intermediate frequency signals, which are output to the intermediate frequency output module, and mix the second local oscillation frequency with the horizontal polarization amplified signal and the vertical polarization amplified signal to obtain two intermediate frequency signals, which are output to the intermediate frequency output module.

[0026] In one embodiment of the present application, the frequency oscillator module 103 includes a 25MHz crystal oscillator, and the crystal oscillator and the power supply and signal switching module 102 generate two local oscillator frequencies, namely, a first local oscillator frequency and a second local oscillator frequency, which are then mixed with the horizontal polarization amplified signal and the vertical polarization amplified signal to obtain four intermediate frequency signals. Specifically, the frequency oscillator module 103 and the power supply and signal switching module 102 undergo core oscillation to generate local oscillator frequencies of 9.75GHz and 10.6GHz, wherein the local oscillator frequency of 9.75GHz is mixed with one horizontal polarization amplified signal and one vertical polarization amplified signal from the power supply and signal switching module 102 to obtain two intermediate frequency signals with a low frequency band of 950MHz to 1950MHz, and the local oscillator frequency of 10.6GHz is mixed with one horizontal polarization amplified signal and one vertical polarization amplified signal from the power supply and signal switching module 102 to obtain two intermediate frequency signals with a high frequency band of 1100MHz to 2150MHz, and finally four intermediate frequency signals are obtained.

[0027] See attached Figure 2 , is a four-output microwave downconverter provided in an embodiment of the present application. Figure 2 In the example of a four-output microwave downconverter, Figure 1The example RF amplification module 101 includes a first transistor 201, a first resistor 202 having one end connected to the emitter of the first transistor 201, a second transistor 203, and a second resistor 204 having one end connected to the emitter of the second transistor 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 collector of the first transistor 201 and the collector of the second transistor 203 are both grounded. The first transistor 201 amplifies the first RF signal to obtain a horizontally polarized amplified signal, which is output to the power supply and signal switching module 102. The second transistor 203 amplifies the second RF signal to obtain a vertically polarized amplified signal, which is output to the power supply and signal switching module 102.

[0028] See also Figure 3 , is a schematic structural diagram of a four-output microwave downconverter provided in another embodiment of the present application. Figure 3 The intermediate frequency output module of the example includes a first intermediate frequency signal output unit composed of a first capacitor C1, a second capacitor C2, a third capacitor C3, a first resistor R1, a first inductor L1 and a first voltage regulator tube, a second intermediate frequency signal output unit composed of a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a second resistor R2, a second inductor L2 and a second voltage regulator tube, a ninth capacitor C9, a tenth capacitor C 10 、11th capacitor C 11 , a third intermediate frequency signal output unit composed of a fifth resistor R5, a third inductor L3 and a third voltage regulator tube, a twelfth capacitor C 12 、Thirteenth capacitor C 13 , Fourteenth capacitor C 14 , a fourth intermediate frequency signal output unit composed of a sixth resistor R6, a fourth inductor L4 and a fourth voltage regulator, and a seventh capacitor C7, an eighth capacitor C8, a third resistor R3 and a fourth resistor R4 form a gear adjustment circuit, wherein the first voltage regulator tube, the second voltage regulator tube, the third voltage regulator tube and the fourth voltage regulator tube can be a voltage regulator or a voltage regulator tube with model 7806, and the first ends of the seventh capacitor C7, the eighth capacitor C8, the third resistor R3 and the fourth resistor R4 in the gear adjustment circuit are respectively connected to the thirteenth pin, the fourteenth pin, the fifteenth pin and the sixteenth pin of the power supply and signal switching module 102, and the second ends of the seventh capacitor C7, the eighth capacitor C8, the third resistor R3 and the fourth resistor R4 are all grounded.

[0029] Above Figure 3In the intermediate frequency output module of the example, the first end of the first capacitor C1 is connected to the first pin of the power supply and signal switching module 102, the second end is connected to the first end of the first resistor R1, the input end, the ground end, and the output end of the first voltage regulator are respectively connected to the first end of the second capacitor C2, the ground, and the first end of the third capacitor C3, the second end of the second capacitor C2 is connected to the second pin of the power supply and signal switching module 102, the second end of the third capacitor C3 is connected to the first end of the first inductor L1 and then connected to the third pin of the power supply and signal switching module 102, and the second end of the first inductor L1 is connected to the second end of the first resistor R1. After the above components are connected, a first intermediate frequency signal output unit is formed, and the first intermediate frequency signal is output from the connection point between the second end of the first inductor L1 and the second end of the first resistor R1. The first end of the second resistor R2 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 C4. The input end, the ground end, and the output end of the second voltage regulator are respectively connected to the first end, the ground, and the first end of the sixth capacitor C6 of the fifth capacitor C5. The second end of the fifth capacitor C5 is connected to the fifth pin of the power supply and signal switching module 102. The second end of the sixth capacitor C6 is connected to the first end of the second inductor L2 and then connected to the sixth pin of the power supply and signal switching module 102. The second end of the second inductor L2 is connected to the second end of the fourth capacitor C4. After the above components are connected, a second intermediate frequency signal output unit is formed. The second intermediate frequency signal is output from the connection point between the second end of the second inductor L2 and the second end of the fourth capacitor C4. The first end of the fifth resistor R5 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 C9. The input end, the ground end, and the output end of the third voltage regulator are respectively connected to the tenth capacitor C 10 The first end, ground, and the eleventh capacitor C 11 The first end of the tenth capacitor C 10 The second end of the eleventh capacitor C is connected to the eighth pin of the power supply and signal switching module 102. 11 The second end of the third inductor L3 is connected to the first end of the third inductor L3 and then connected to the ninth pin of the power supply and signal switching module 102. The second end of the third inductor L3 is connected to the second end of the ninth capacitor C9. The above components are connected to form a third intermediate frequency signal output unit. The third intermediate frequency signal is output from the connection point between the second end of the third inductor L3 and the second end of the ninth capacitor C9. 12 The first end of the fourth voltage regulator is connected to the tenth pin of the power supply and signal switching module 102, the second end is connected to the first end of the sixth resistor R6, the input end, the ground end, and the output end of the fourth voltage regulator are respectively connected to the thirteenth capacitor C 13 The first end, ground, and the fourteenth capacitor C 14 The first end of the thirteenth capacitor C 13 The second end of the capacitor C is connected to the eleventh pin of the power supply and signal switching module 102, and the fourteenth capacitor C14 The second end of the fourth inductor L4 is connected to the first end of the fourth inductor L4 and then connected to the twelfth pin of the power supply and signal switching module 102. The second end of the fourth inductor L4 is connected to the second end of the sixth resistor R6. The above components are connected to form a fourth intermediate frequency signal output unit, and the fourth intermediate frequency signal is output from the connection point between the second end of the fourth inductor L4 and the second end of the sixth resistor R6.

[0030] Since the four intermediate frequency signals are symmetrically output, the components of the same type in the corresponding positions of the four intermediate frequency signal output units can take the same value, for example, the first capacitor C1, the fourth capacitor C4, the ninth capacitor C9 and the twelfth capacitor C 12 They may be capacitors with equal capacitance, the first resistor R1, the second resistor R2, the fifth resistor R5 and the sixth resistor R6 may be resistors with equal resistance, the first inductor L1, the second inductor L2, the third inductor L3 and the fourth inductor L4 may be inductors with equal inductance, and so on.

[0031] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be assigned to different functional units and modules as needed, 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. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned device can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0032] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

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

[0034] In the embodiments provided in the present application, it should be understood that the disclosed devices / equipment and methods can be implemented in other ways. For example, the device / equipment embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as 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 mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0035] The units described as separate 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 distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

[0037] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. The specific implementation methods described above further describe the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above description is only the specific implementation method 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 principles of the present application should be included in 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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