CN219105908U - Power amplifier choke circuit suitable for broadband 9KHz-400MHz - Google Patents
Power amplifier choke circuit suitable for broadband 9KHz-400MHz Download PDFInfo
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- CN219105908U CN219105908U CN202320057948.5U CN202320057948U CN219105908U CN 219105908 U CN219105908 U CN 219105908U CN 202320057948 U CN202320057948 U CN 202320057948U CN 219105908 U CN219105908 U CN 219105908U
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- power amplifier
- inductor
- 9khz
- 400mhz
- filter capacitor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The utility model relates to the technical field of electronic circuits, in particular to a power amplifier choke circuit applicable to a broadband 9KHz-400 MHz. The power amplifier choke circuit suitable for the broadband 9KHz-400MHz adopts the design of connecting the magnetic cores in series, so that the power amplifier choke circuit can work in a broadband, presents a high-resistance state for high-frequency signals in a working frequency band, inhibits signal leakage, and can effectively solve the dilemma that the traditional choke is easy to leak broadband signals.
Description
Technical Field
The utility model relates to the technical field of electronic circuits, in particular to a power amplifier choke circuit applicable to a broadband 9KHz-400 MHz.
Background
With the rapid development of power amplifier devices in recent years, the requirements for choke coils are more and more increased, and further, a series of defects appear in the traditional choke structure: to satisfy the current supply capability of several amperes or even several tens of amperes for the high frequency band, the choke coil generates a heat generation problem. Such a problem of heat generation has been treated by heat dissipation by closely adhering a heat conductive adhesive around the core and the winding wire. However, it is difficult to completely suppress leakage of the high-frequency signal by suppressing the high-frequency bandwidth of the choke coil and by suppressing the signal having a wide frequency band.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model aims to provide a power amplifier choke circuit applicable to a wide frequency band of 9KHz-400MHz, which can work in the wide frequency band, present a high-resistance state for high-frequency signals in the working frequency band and inhibit signal leakage.
The technical scheme adopted by the utility model is as follows: a power amplifier choke circuit suitable for wide frequency band 9KHz-400MHz comprises a first power supply, a voltage stabilizer, a resistor and a second power supply; the first power supply is connected with the voltage stabilizer, the voltage stabilizer is connected with one end of the resistor, and the other end of the resistor is connected with the second power supply; a branch circuit is further arranged on a connecting line of the resistor and the second power supply, one end of a first inductor is connected to the branch circuit, the first inductor is sequentially connected with a second inductor and a third inductor in series, and the other end of the third inductor is a port for choke connection of the power amplifier device; the first inductor and the third inductor are wound on the magnetic ring; the output port of the voltage stabilizer is also connected with a first filter capacitor and a second filter capacitor which are grounded, and the input port is connected with a third filter capacitor and a fourth filter capacitor which are grounded.
Furthermore, in order to meet the power amplifier requirement of 9KHz-400MHz in a broadband, the first power supply adopts a +5V direct current voltage source, and the second power supply adopts a +50V direct current voltage source.
Further, in order to meet the power amplifier requirement of 9KHz-400MHz in a broadband, a 78L05 type three-terminal integrated voltage stabilizer is adopted as the voltage stabilizer; the output end of the 78L05 type three-terminal integrated voltage stabilizer is connected with a first power supply, the input end of the 78L05 type three-terminal integrated voltage stabilizer is connected with a resistor, and two grounding ports of the 78L05 type three-terminal integrated voltage stabilizer are grounded.
Furthermore, in order to meet the power amplifier requirement of 9KHz-400MHz in a broadband, the first filter capacitor adopts capacitors of 50V and 100nF, the second filter capacitor adopts capacitors of 25V and 10uF, the third filter capacitor adopts capacitors of 100V and 100nF, and the fourth filter capacitor adopts capacitors of 100V and 10 uF.
Furthermore, in order to meet the power amplifier requirement of 9KHz-400MHz in a broadband, the first inductor and the third inductor are made of high-temperature-resistant copper wires with the cross section area of 0.5 square millimeter, and are wound on two magnetic rings of 61 types together in 15 turns; the inductance value of the first inductance and the third inductance was measured to be 36uH.
Furthermore, in order to meet the power amplifier requirement of 9KHz-400MHz in the broadband, the second inductor adopts 5724-RC type inductor, and the inductance value is 4mH.
Furthermore, in order to meet the power amplifier requirement of 9KHz-400MHz in the broadband, the resistance value is 2000 ohms.
The beneficial effects are that:
the power amplifier choke circuit suitable for the broadband 9KHz-400MHz adopts the design of connecting the magnetic cores in series, so that the power amplifier choke circuit can work in a broadband, presents a high-resistance state for high-frequency signals in a working frequency band, inhibits signal leakage, and can effectively solve the dilemma that the traditional choke is easy to leak broadband signals.
Drawings
FIG. 1 is a schematic circuit diagram and application diagram of a power amplifier choke circuit suitable for a wide frequency band of 9KHz-400 MHz;
FIG. 2 is a schematic diagram of the windings of the first inductor and the third inductor of the power amplifier choke circuit applicable to the wide frequency band 9KHz-400 MHz;
in fig. 1, a block a is a circuit schematic diagram of the power amplifier choke circuit applicable to the broadband 9KHz-400MHz, and a block B is a circuit schematic diagram of the power amplifier device in use, which are connected in a manner schematically shown in fig. 1 so as to use the power amplifier choke circuit;
in FIG. 2, 1-magnet ring, 2-refractory copper wire.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the utility model, fall within the scope of protection of the utility model.
The power amplifier choke circuit suitable for the wide frequency band 9KHz-400MHz shown in figure 1 comprises a first power supply V1, a voltage stabilizer U1, a resistor R and a second power supply V2; the first power supply V1 is connected with the voltage regulator U1, the voltage regulator U1 is connected with one end of the resistor R, and the other end of the resistor R is connected with the second power supply V2; a branch circuit is further arranged on a connecting line of the resistor R and the second power supply V2, one end of the first inductor L1 is connected to the branch circuit, the first inductor L1 is sequentially connected with the second inductor L2 and the third inductor L3 in series, and the other end of the third inductor L3 is a port of choke connection of the power amplifier device; the first inductor L1 and the third inductor L3 are wound on the magnetic ring; the output port VOUT of the voltage regulator U1 is further connected to a first filter capacitor C1 and a second filter capacitor C2, which are grounded, and the input port VIN is connected to a third filter capacitor C3 and a fourth filter capacitor C4, which are grounded.
In this embodiment, in order to meet the power amplifier requirement of 9KHz-400MHz in the broadband, the first power V1 uses a +5v dc voltage source, and the second power V2 uses a +50v dc voltage source.
In the embodiment, in order to meet the power amplifier requirement of 9KHz-400MHz in a broadband, a 78L05 type three-terminal integrated voltage stabilizer is adopted as the voltage stabilizer U1; the output end of the 78L05 type three-terminal integrated voltage stabilizer is connected with a first power supply V1, the input end of the 78L05 type three-terminal integrated voltage stabilizer is connected with a resistor R, and two grounding ports of the 78L05 type three-terminal integrated voltage stabilizer are grounded.
In this embodiment, to meet the power amplifier requirement at the broadband 9KHz-400MHz, the first filter capacitor C1 uses a capacitor of 50V and 100nF, the second filter capacitor C2 uses a capacitor of 25V and 10uF, the third filter capacitor C3 uses a capacitor of 100V and 100nF, and the fourth filter capacitor C4 uses a capacitor of 100V and 10 uF.
In this embodiment, in order to meet the power amplifier requirement of 9KHz-400MHz in the broadband, as shown in fig. 2, the first inductor L1 and the third inductor L3 are made of a high-temperature-resistant copper wire 2 with a cross-sectional area of 0.5 square millimeter, which is wound on two magnetic rings 1 of 61 types and 15 turns; the inductance value of the first inductance L1 and the third inductance L3 was measured to be 36uH.
In this embodiment, in order to meet the power amplifier requirement of 9KHz-400MHz in the broadband, the second inductor L2 is a 5724-RC inductor, and the inductance value thereof is 4mH.
In the embodiment, in order to meet the power amplifier requirement of 9KHz-400MHz in the broadband, and in order to meet the power amplifier requirement of 9KHz-400MHz in the broadband, the resistance R has a resistance value of 2000 ohms.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (7)
1. The utility model provides a be suitable for broadband 9KHz-400 MHz's power amplifier choke circuit, includes first power, stabiliser, resistance and second power, its characterized in that: the first power supply is connected with the voltage stabilizer, the voltage stabilizer is connected with one end of the resistor, and the other end of the resistor is connected with the second power supply; a branch circuit is further arranged on a connecting line of the resistor and the second power supply, one end of a first inductor is connected to the branch circuit, the first inductor is sequentially connected with a second inductor and a third inductor in series, and the other end of the third inductor is a port for choke connection of the power amplifier device; the first inductor and the third inductor are wound on the magnetic ring; the output port of the voltage stabilizer is also connected with a first filter capacitor and a second filter capacitor which are grounded, and the input port is connected with a third filter capacitor and a fourth filter capacitor which are grounded.
2. A power amplifier choke circuit suitable for wide frequency band 9KHz-400MHz as claimed in claim 1, characterized in that: the first power supply adopts a +5V direct current voltage source, and the second power supply adopts a +50V direct current voltage source.
3. A power amplifier choke circuit suitable for wide frequency band 9KHz-400MHz as claimed in claim 1, characterized in that: the voltage stabilizer adopts a 78L05 type three-terminal integrated voltage stabilizer; the output end of the 78L05 type three-terminal integrated voltage stabilizer is connected with a first power supply, the input end of the 78L05 type three-terminal integrated voltage stabilizer is connected with a resistor, and two grounding ports of the 78L05 type three-terminal integrated voltage stabilizer are grounded.
4. A power amplifier choke circuit suitable for wide frequency band 9KHz-400MHz as claimed in claim 1, characterized in that: the first filter capacitor adopts capacitors of 50V and 100nF, the second filter capacitor adopts capacitors of 25V and 10uF, the third filter capacitor adopts capacitors of 100V and 100nF, and the fourth filter capacitor adopts capacitors of 100V and 10 uF.
5. A power amplifier choke circuit suitable for wide frequency band 9KHz-400MHz as claimed in claim 1, characterized in that: the first inductor and the third inductor are made of high-temperature-resistant copper wires with the cross section area of 0.5 square millimeter, and are wound on two magnetic rings of model 61 together in 15 turns.
6. A power amplifier choke circuit suitable for wide frequency band 9KHz-400MHz as claimed in claim 1, characterized in that: the second inductor adopts 5724-RC type inductance.
7. A power amplifier choke circuit suitable for wide frequency band 9KHz-400MHz as claimed in claim 1, characterized in that: the resistance value of the resistor is 2000 ohms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320057948.5U CN219105908U (en) | 2023-01-05 | 2023-01-05 | Power amplifier choke circuit suitable for broadband 9KHz-400MHz |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320057948.5U CN219105908U (en) | 2023-01-05 | 2023-01-05 | Power amplifier choke circuit suitable for broadband 9KHz-400MHz |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219105908U true CN219105908U (en) | 2023-05-30 |
Family
ID=86430249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320057948.5U Active CN219105908U (en) | 2023-01-05 | 2023-01-05 | Power amplifier choke circuit suitable for broadband 9KHz-400MHz |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219105908U (en) |
-
2023
- 2023-01-05 CN CN202320057948.5U patent/CN219105908U/en active Active
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