Envelope tracking power supply with protection structure

Abstract

The utility model discloses an envelope line tracking power supply with a protection structure, which comprises a main body structure, the main body structure comprises a shell, a radio frequency input end, a radio frequency output end and a connecting flange, a leveling structure comprises supporting legs, anti-skid lines, a threaded rod, a threaded sleeve and a telescopic groove, and the telescopic groove is arranged at the bottom end of the shell. The telescopic groove is formed in the bottom end of the shell, the threaded rod can ascend and descend in the telescopic groove, and the threaded rod and the threaded sleeve are in threaded connection, so that the threaded rod can be driven to ascend and descend by screwing the threaded rod, and the supporting legs at the bottom end can be driven to ascend and descend by ascending and descending of the threaded rod; the overall height of the device can be adjusted by adjusting the height of the supporting legs, the device can adapt to different conditions, meanwhile, the height of one supporting leg can be independently adjusted, the device is leveled, the friction force of the supporting legs can be enhanced through the anti-skid lines, and the device is prevented from slipping; therefore, the height of the envelope tracking power supply can be adjusted conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of envelope line power supply, in particular to an envelope line tracking power supply with a protection structure. Background Art

[0002] The envelope refers to a high-frequency amplitude modulated signal, whose amplitude changes according to the low-frequency modulation signal. If the peak points of the high-frequency amplitude modulated signal are connected, a curve corresponding to the low-frequency modulation signal can be obtained. In the case of high tracking bandwidth, the commonly used bandwidth limiting technology or slew rate limiting technology is to reduce the bandwidth of the envelope signal as a whole, making a trade-off and compromise between switching loss and linear amplifier loss, which ignores the characteristics of the envelope signal itself. For this reason, we propose a segmented tracking technology for the envelope amplitude range, that is, according to the probability density function of the envelope signal, different tracking strategies are assigned to envelope signals in different probability intervals, so as to achieve refined optimization at the system level. Specifically, in the high amplitude segment, the probability of the waveform appearing is not high. The frequency of occurrence is not high, but it corresponds to higher amplitude voltage and current, so the precise tracking mode is adopted. In the medium amplitude segment, a large number of high-frequency signals appear with high probability. In order to reduce possible distortion and optimize switching loss and loss distribution of linear amplifier, the reduced bandwidth tracking mode is adopted. In the low amplitude segment, the frequency and probability of waveform occurrence are high, but the corresponding voltage and current amplitude are low, so the impact on system efficiency is relatively small. Therefore, the quasi-constant voltage tracking strategy is adopted, that is, on the basis of constant voltage tracking, efficiency optimization is taken as the principle, and the program is used to determine whether a valley level needs to be added in certain amplitude ranges to more efficiently fit the envelope shape.

[0003] The above-mentioned prior art has some disadvantages. 1. It is difficult to adjust the height of the envelope tracking power supply. The power supply often works in different places. The device often needs to adjust the height to adapt to different situations. The device may also be placed unsteadily.

[0004] 2. It is difficult for envelope tracking power supplies to protect electronic components. The electronic components of the power supply are relatively fragile and can be easily damaged if exposed to the outside for a long time. Utility Model Content

[0005] The utility model aims to provide an envelope tracking power supply with a protection structure, so as to solve the defects of the existing envelope tracking power supply that it is difficult to adjust the height of the device and difficult to protect the electronic components.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: an envelope tracking power supply with a protective structure, comprising a main structure;

[0007] The main structure comprises a shell, a radio frequency input terminal, a radio frequency output terminal and a connecting flange, wherein the radio frequency input terminal is installed on one side of the shell, and the connecting flange is installed on the other side of the shell;

[0008] A radio frequency output terminal is installed on one side of the connecting flange, a terminal is installed on the top of the shell, iron sheets are installed on both ends of the top of the shell, and a protective structure is installed on the top of the shell;

[0009] The top of the shell is equipped with electronic components, and the bottom of the shell is equipped with a leveling structure, which includes supporting feet, anti-skid patterns, threaded rods, threaded sleeves and telescopic slots, and the telescopic slots are arranged at the bottom of the shell.

[0010] When using it, first of all, in the case of high tracking bandwidth, the commonly used bandwidth limitation technology or slew rate limitation technology is to reduce the bandwidth of the envelope signal as a whole, making trade-offs and compromises between switching loss and linear amplifier loss, which ignores the characteristics of the envelope signal itself. For this reason, we propose an envelope amplitude range segmented tracking technology, that is, according to the probability density function of the envelope signal, different tracking strategies are assigned to envelope signals in different probability intervals, so as to achieve system-level refined optimization. Specifically, in the high amplitude segment, the probability of the waveform appearing is not high, and the frequency of occurrence is not high, but the corresponding higher amplitude The voltage and current of the amplifier are large, so the precise tracking mode is adopted. In the medium amplitude segment, a large number of high-frequency signals appear with high probability. In order to reduce possible distortion and optimize the switching loss and the loss distribution of the linear amplifier, the reduced bandwidth tracking mode is adopted. In the low amplitude segment, the frequency and probability of waveform occurrence are high, but the corresponding voltage and current amplitudes are low, so the impact on the system efficiency is relatively small. Therefore, the quasi-constant voltage tracking strategy is adopted, that is, on the basis of constant voltage tracking, efficiency optimization is taken as the principle, and the program is used to determine whether a valley level needs to be added in certain amplitude ranges to more efficiently fit the envelope shape.

[0011] Preferably, a heat dissipation structure is installed at the bottom end of the shell, and the heat dissipation structure includes a mounting plate, mounting screws and a heat sink. The mounting plate is installed at the bottom end of the shell, and a heat sink is installed at the bottom end of the mounting plate. Mounting screws are installed on both sides of the bottom end of the mounting plate. The mounting plate and the heat sink can be made of materials with good thermal conductivity, such as brass. The heat sink has good thermal conductivity and can absorb the heat generated when the device is working. Then, due to the large surface area of ​​the heat sink, the heat can be dissipated quickly, thereby accelerating the heat dissipation speed of the device.

[0012] Preferably, the mounting screws and the mounting plate form a threaded connection, the mounting screws are symmetrically distributed about the central axis of the mounting plate, and the mounting plate is mounted on the bottom end of the housing through the mounting screws.

[0013] Preferably, a threaded sleeve is installed at the bottom end of the telescopic slot, a threaded rod is passed through the interior of the telescopic slot, and a support foot is installed at the bottom end of the threaded rod. The threaded rod can be raised and lowered inside the telescopic slot, and the threaded rod and the threaded sleeve form a threaded connection, so twisting the threaded rod will drive the threaded rod to rise and fall, and the lifting of the threaded rod will drive the support foot at the bottom to rise and fall. By adjusting the height of the support foot, the overall height of the device can be adjusted, so that the device can adapt to different situations. At the same time, the height of one support foot can also be adjusted separately to level the device.

[0014] Preferably, the bottom end of the support foot is provided with anti-skid patterns, and the anti-skid patterns are arranged at equal intervals at the bottom end of the support foot. The anti-skid patterns can enhance the friction of the support foot and prevent the device from slipping.

[0015] Preferably, the outer side wall of the threaded rod is evenly provided with external threads, the inner side wall of the threaded sleeve is evenly provided with internal threads that cooperate with the external threads, and the threaded rod and the threaded sleeve are threadedly connected, so twisting the threaded rod will drive the threaded rod to rise and fall.

[0016] Preferably, the threaded rod can slide inside the telescopic slot, the outer diameter of the threaded rod is smaller than the inner diameter of the telescopic slot, and the threaded rod can be lifted and lowered inside the telescopic slot.

[0017] Preferably, the protective structure comprises a protective plate, a positioning block and a pull plate, the positioning block is installed at the top end of the shell, the top end of the positioning block is movably connected to the protective plate, and the pull plates are installed at both ends of the protective plate.

[0018] Preferably, a slot is provided at the top end of the positioning block, and a block is provided at the bottom end of the protective plate. The positioning block and the protective plate form a snap-fit ​​structure, and the snap-fit ​​structure allows the protective plate to be disassembled.

[0019] The envelope tracking power supply with a protective structure provided by the utility model has the following advantages: a telescopic slot is provided at the bottom end of the shell, so that the threaded rod can be raised and lowered inside the telescopic slot, and the threaded rod and the threaded sleeve form a threaded connection, so twisting the threaded rod will drive the threaded rod to be raised and lowered, and the lifting of the threaded rod will drive the bottom support foot to be raised and lowered, and the height of the support foot can be adjusted to adjust the overall height of the device, so that the device can adapt to different situations, and the height of one support foot can also be adjusted separately to level the device, and the anti-skid pattern can enhance the friction of the support foot to prevent the device from slipping, thereby achieving the purpose of facilitating the adjustment of the height of the envelope tracking power supply.

[0020] By installing a positioning block on the top of the shell, the positioning block and the protective plate form a snap-fit ​​structure, which is easy to disassemble. The protective plate can be clamped on the top of the positioning block. The protective plate can protect the electronic components on the top of the shell to prevent damage to the electronic components. When necessary, the protective plate can be removed by pulling the pull plate, so as to achieve the purpose of the envelope tracking power supply to protect the electronic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model;

[0023] Figure 3 For the utility model Figure 2 A partial cross-section at the center is an enlarged structural diagram;

[0024] Figure 4 It is a three-dimensional structural schematic diagram of the heat dissipation structure of the utility model;

[0025] Figure 5 It is a three-dimensional structural schematic diagram of the protective structure of the utility model.

[0026] Explanation of the reference numerals in the figure: 1. Main structure; 101. Housing; 102. RF input terminal; 103. RF output terminal; 104. Connecting flange; 2. Leveling structure; 201. Support foot; 202. Anti-slip groove; 203. Threaded rod; 204. Threaded sleeve; 205. Telescopic slot; 3. Heat dissipation structure; 301. Mounting plate; 302. Mounting screw; 303. Heat sink; 4. Terminal; 5. Iron sheet; 6. Protection structure; 601. Protection plate; 602. Positioning block; 603. Pull plate; 7. Electronic component. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-Figure 5 The utility model provides an embodiment: an envelope tracking power supply with a protective structure, including a main structure 1.

[0029] The main structure 1 includes a shell 101, a radio frequency input terminal 102, a radio frequency output terminal 103 and a connecting flange 104. The radio frequency input terminal 102 is installed on one side of the shell 101, and a heat dissipation structure 3 is installed at the bottom of the shell 101. The heat dissipation structure 3 includes a mounting plate 301, mounting screws 302 and a heat sink 303. The mounting plate 301 is installed at the bottom of the shell 101, and the heat sink 303 is installed at the bottom of the mounting plate 301. Mounting screws 302 are installed on both sides of the bottom of the mounting plate 301. The mounting screws 302 and the mounting plate 301 form a threaded connection, and the mounting screws 302 are symmetrically distributed about the central axis of the mounting plate 301.

[0030] See attached Figure 1-2 and attached Figure 4 As shown, the mounting plate 301 is mounted on the bottom of the housing 101 by means of mounting screws 302. Both the mounting plate 301 and the heat sink 303 can be made of materials with good thermal conductivity, such as brass. The heat sink 303 has good thermal conductivity and can absorb the heat generated when the device is working. Since the heat sink 303 has a large surface area, it can quickly dissipate heat, thereby accelerating the speed of heat dissipation of the device.

[0031] A connecting flange 104 is installed on the other side of the shell 101, and a radio frequency output terminal 103 is installed on one side of the connecting flange 104. A terminal 4 is installed on the top of the shell 101, and iron sheets 5 are installed at both ends of the top of the shell 101. A protective structure 6 is installed on the top of the shell 101. The protective structure 6 includes a protective plate 601, a positioning block 602 and a pull plate 603. The positioning block 602 is installed on the top of the shell 101, and a card slot is set at the top of the positioning block 602. A card block is set at the bottom of the protective plate 601, and the positioning block 602 and the protective plate 601 constitute a snap-fit ​​structure.

[0032] The top of the positioning block 602 is movably connected to a protection plate 601 , and both ends of the protection plate 601 are installed with pull plates 603 .

[0033] See attached Figure 2 and attached Figure 5 As shown, the positioning block 602 and the protective plate 601 form a snap-fit ​​structure, which is easy to disassemble. The protective plate 601 can be clamped on the top of the positioning block 602. The protective plate 601 can protect the electronic components 7 on the top of the housing 101 to prevent the electronic components 7 from being damaged. When necessary, the protective plate 601 can be removed by pulling the pull plate 603.

[0034] An electronic component 7 is installed at the top of the shell 101, and a leveling structure 2 is installed at the bottom of the shell 101. The leveling structure 2 includes a support foot 201, an anti-slip pattern 202, a threaded rod 203, a threaded sleeve 204 and a telescopic slot 205. The telescopic slot 205 is arranged at the bottom of the shell 101, and a threaded sleeve 204 is installed at the bottom of the telescopic slot 205. The inside of the telescopic slot 205 is penetrated by a threaded rod 203, and the outer side wall of the threaded rod 203 is evenly provided with external threads, and the inner side wall of the threaded sleeve 204 is evenly provided with internal threads that cooperate with the external threads. The threaded rod 203 and the threaded sleeve 204 are threadedly connected.

[0035] The threaded rod 203 can slide inside the telescopic slot 205 , and the outer diameter of the threaded rod 203 is smaller than the inner diameter of the telescopic slot 205 .

[0036] A support foot 201 is installed at the bottom end of the threaded rod 203 . The bottom end of the support foot 201 is provided with anti-skid patterns 202 , and the anti-skid patterns 202 are arranged at equal intervals at the bottom end of the support foot 201 .

[0037] See attached Figure 2-3 As shown, the threaded rod 203 can be raised and lowered inside the telescopic slot 205, and the threaded rod 203 and the threaded sleeve 204 form a threaded connection. Therefore, twisting the threaded rod 203 will drive the threaded rod 203 to rise and fall, and the lifting and lowering of the threaded rod 203 will drive the bottom support leg 201 to rise and fall. By adjusting the height of the support leg 201, the overall height of the device can be adjusted to allow the device to adapt to different situations. At the same time, the height of one support leg 201 can also be adjusted separately to level the device. The anti-slip pattern 202 can enhance the friction of the support leg 201 to prevent the device from slipping.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An envelope tracking power supply with a protective structure, comprising a main structure (1); Features: The main structure (1) comprises a housing (101), a radio frequency input end (102), a radio frequency output end (103) and a connecting flange (104); the radio frequency input end (102) is installed on one side of the housing (101), and the connecting flange (104) is installed on the other side of the housing (101); A radio frequency output end (103) is installed on one side of the connecting flange (104), a terminal (4) is installed on the top of the housing (101), iron sheets (5) are installed at both ends of the top of the housing (101), and a protective structure (6) is installed on the top of the housing (101); An electronic component (7) is installed at the top end of the housing (101), and a leveling structure (2) is installed at the bottom end of the housing (101). The leveling structure (2) comprises a support foot (201), an anti-slip pattern (202), a threaded rod (203), a threaded sleeve (204) and a telescopic slot (205). The telescopic slot (205) is arranged at the bottom end of the housing (101).

2. The envelope tracking power supply with a protective structure according to claim 1, characterized in that: A heat dissipation structure (3) is installed at the bottom end of the housing (101), and the heat dissipation structure (3) comprises a mounting plate (301), mounting screws (302) and a heat sink (303); the mounting plate (301) is installed at the bottom end of the housing (101), a heat sink (303) is installed at the bottom end of the mounting plate (301), and mounting screws (302) are installed on both sides of the bottom end of the mounting plate (301).

3. The envelope tracking power supply with a protective structure according to claim 2, characterized in that: The mounting screws (302) and the mounting plate (301) form a threaded connection, and the mounting screws (302) are symmetrically distributed about the central axis of the mounting plate (301).

4. The envelope tracking power supply with a protective structure according to claim 1, characterized in that: A threaded sleeve (204) is installed at the bottom end of the telescopic slot (205), a threaded rod (203) penetrates the interior of the telescopic slot (205), and a support foot (201) is installed at the bottom end of the threaded rod (203).

5. The envelope tracking power supply with a protective structure according to claim 1, characterized in that: The bottom end of the support foot (201) is provided with anti-skid patterns (202), and the anti-skid patterns (202) are arranged at equal intervals at the bottom end of the support foot (201).

6. The envelope tracking power supply with a protective structure according to claim 1, characterized in that: External threads are evenly arranged on the outer wall of the threaded rod (203), internal threads matching the external threads are evenly arranged on the inner wall of the threaded sleeve (204), and the threaded rod (203) and the threaded sleeve (204) are threadedly connected.

7. The envelope tracking power supply with a protective structure according to claim 1, characterized in that: The threaded rod (203) can slide inside the telescopic slot (205), and the outer diameter of the threaded rod (203) is smaller than the inner diameter of the telescopic slot (205).

8. The envelope tracking power supply with a protective structure according to claim 1, characterized in that: The protective structure (6) comprises a protective plate (601), a positioning block (602) and a pull plate (603); the positioning block (602) is mounted on the top of the housing (101); the top of the positioning block (602) is movably connected to the protective plate (601), and the pull plates (603) are mounted on both ends of the protective plate (601).

9. The envelope tracking power supply with a protective structure according to claim 8, characterized in that: The top end of the positioning block (602) is provided with a card slot, the bottom end of the protection plate (601) is provided with a card block, and the positioning block (602) and the protection plate (601) form a card-fitting structure.

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