CN221283159U - Broadband power amplifier synthesis device with multiport adaptation network - Google Patents
Broadband power amplifier synthesis device with multiport adaptation network Download PDFInfo
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- CN221283159U CN221283159U CN202323196030.8U CN202323196030U CN221283159U CN 221283159 U CN221283159 U CN 221283159U CN 202323196030 U CN202323196030 U CN 202323196030U CN 221283159 U CN221283159 U CN 221283159U
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- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 28
- 230000006978 adaptation Effects 0.000 title claims abstract description 9
- 230000003321 amplification Effects 0.000 claims abstract description 15
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 15
- 238000012805 post-processing Methods 0.000 claims abstract description 10
- 239000003990 capacitor Substances 0.000 claims description 86
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- 238000012545 processing Methods 0.000 description 4
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- 238000012986 modification Methods 0.000 description 2
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- 238000010521 absorption reaction Methods 0.000 description 1
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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
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Abstract
The utility model provides a broadband power amplifier synthesis device with a multiport adaptation network, which relates to the technical field of broadband power amplifier synthesis and comprises a distributor, a plurality of sub-circuits, a synthesizer and a post-processing circuit; the input ends of the sub-lines are respectively connected to the output ends of the distributor, the output ends of the sub-lines are respectively connected to the input ends of the synthesizer, and the output ends of the synthesizer are connected to the post-processing circuit; the sub-line comprises a broadband power amplification module and a multi-port adapting network, wherein the input end of the broadband power amplification module is connected with the output end of the distributor, the output end of the broadband power amplification module is connected with the input end of the multi-port adapting network, and the output end of the multi-port adapting network is connected with the input end of the synthesizer. The utility model has the advantages of stable work in the full frequency band and stable output in the full frequency band power synthesis.
Description
Technical Field
The utility model belongs to the technical field of broadband power amplifier synthesis, and particularly relates to a broadband power amplifier synthesis device with a multiport adaptation network.
Background
At present, the all-solid-state frequency modulation transmitter uses the advantages of strong anti-interference capability, stable signal, wide frequency band and the like as an indispensable part of the field of broadcast transmitters, and the high-power frequency modulation broadband power amplifier synthesis technology is key. The broadband frequency modulation power amplifier is a core part of broadband power amplifier synthesis, and how to ensure that the broadband power amplifier can stably output in a full frequency band is critical. At present, most of frequency modulation transmitter power amplifiers have poor linearity because of pursuing high efficiency and no requirement on linear indexes, so that power synthesis of the whole power of the transmitter can be directly influenced due to the fact that power of certain frequency bands cannot be synthesized when broadband power amplifiers are synthesized.
In the prior art, a main solution is to add a low-pass filter behind a power amplifier synthesizer to improve harmonic characteristics. The method can improve the harmonic characteristic after the power amplifier synthesizer, but the low-pass filter is characterized by allowing the in-band signal to pass as little as possible, and not processing the reflected signal outside the pass band, which can lead the reflected signal outside the pass band to return to the synthesizer, and the synthesizer returns to the power amplifier tube, and the harmonic linearity of the power amplifier tube is poor because the power amplifier tube used by the all-solid-state frequency modulation transmitter is in order to pursue high power and high efficiency, and the signal reflected by the low-pass filter can lead the power amplifier tube to directly work abnormally and stably even burn out because of overhigh temperature, so that the stability of the transmitter is directly affected.
Therefore, the harmonic problem of the broadband power amplifier needs to be improved, and the stable operation of the power amplifier tube in the full frequency band is ensured, so that the stable output of the whole system in the full frequency band power synthesis is realized.
Disclosure of utility model
Aiming at the technical problems in the background technology, the utility model provides a broadband power amplifier synthesis device with a multiport adapting network, which can realize that the whole system can stably output in full-frequency power synthesis.
In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:
A broadband power amplifier synthesis device with a multiport adapting network comprises a distributor, a plurality of sub-circuits, a synthesizer and a post-processing circuit;
the input ends of the sub-circuits are respectively connected to the output ends of the distributor, the output ends of the sub-circuits are respectively connected to the input ends of the synthesizer, and the output ends of the synthesizer are connected to the post-processing circuit;
the sub-line comprises a broadband power amplification module and a multi-port adaptive network, wherein the input end of the broadband power amplification module is connected with the output end of the distributor, the output end of the broadband power amplification module is connected with the input end of the multi-port adaptive network, and the output end of the multi-port adaptive network is connected with the input end of the synthesizer.
Preferably, the number of the sub-lines is 2.
Preferably, the multi-port adaptation network comprises a radio frequency signal output module and a load module;
The input end of the radio frequency signal output module and the input end of the load module are both connected with the output end of the broadband power amplifier module;
The output end of the radio frequency signal output module is connected with the input end of the synthesizer, and the output end of the load module is connected with the load module.
Preferably, the radio frequency signal output module comprises a plurality of inductors and a plurality of capacitors;
One end of the first inductor is an input end of the radio frequency signal output module, the other end of the first inductor is connected with one end of the second inductor, the other end of the second inductor is connected with one end of the third inductor, the other end of the third inductor is connected with one end of the fourth inductor, and the other end of the fourth inductor is connected with one end of the fourth capacitor and is an output end of the radio frequency signal output module;
One end of the first capacitor is connected to a node between the first inductor and the second inductor, one end of the second capacitor is connected to a node between the second inductor and the third inductor, one end of the third capacitor is connected to a node between the third inductor and the fourth inductor, and the other end of the first capacitor, the other end of the second capacitor, the other end of the third capacitor and the other end of the fourth capacitor are grounded.
Preferably, the load module comprises a plurality of capacitors and a plurality of inductors;
One end of the fifth capacitor is an input end of the radio frequency signal output module, the other end of the fifth capacitor is connected with one end of the sixth capacitor, the other end of the sixth capacitor is connected with one end of the seventh capacitor, the other end of the seventh capacitor is connected with one end of the eighth capacitor, the other end of the eighth capacitor is connected with one end of the eighth inductor, and the load module is connected between the other end of the eighth capacitor and the ground end;
One end of the fifth inductor is connected to a node between the fifth capacitor and the sixth capacitor, one end of the sixth inductor is connected to a node between the sixth capacitor and the seventh capacitor, one end of the seventh inductor is connected to a node between the seventh capacitor and the eighth capacitor, and the other end of the fifth inductor, the other end of the sixth inductor, the other end of the seventh inductor and the other end of the eighth inductor are grounded.
Preferably, the load module adopts a resistor, one end of the first resistor is connected with the other end of the eighth capacitor, and the other end of the first resistor is grounded.
Preferably, the post-processing circuit comprises a filter and a directional coupler which are connected in sequence.
The utility model has the following advantages and beneficial effects:
The utility model can improve the harmonic problem of the broadband power amplifier and ensure the stable operation of the power amplifier tube in the full frequency band at the same time;
The utility model mainly realizes the improvement of the synthesis output capability of the broadband power amplifier of the frequency modulation transmitter through the multiport adaptation network, does not need to make excessive changes to the existing module, and has high cost performance and wider applicability;
The radio frequency signal output module part of the multiport adapting network has small in-band insertion loss, good in-band matching and good out-of-band harmonic suppression, and the load module part has small out-of-band insertion loss, good out-of-band matching and good in-band suppression;
The utility model has simple structure, the adopted electrical components are easy to obtain and low in price, and the utility model has high cost performance and is convenient to implement and popularize.
Drawings
Fig. 1 is a schematic diagram of a wideband power amplifier synthesis device with a multiport adapter network according to embodiment 1 of the present utility model;
Fig. 2 is a schematic circuit connection diagram of a multiport adapting network according to embodiment 2 of the present utility model;
FIG. 3 is a diagram of a synthesized output spectrum of a wideband power amplifier according to the prior art in embodiment 2 of the present utility model;
fig. 4 is a diagram of a broadband power amplifier synthesized output spectrum under the technical scheme of embodiment 2 of the present utility model;
Icon: r1-first resistor, C1-first capacitor, C2-second capacitor, C3-third capacitor, C4-fourth capacitor, C5-fifth capacitor, C6-sixth capacitor, C7-seventh capacitor, C8-eighth capacitor, L1-first inductor, L2-second inductor, L3-third inductor, L4-fourth inductor, L5-fifth inductor, L6-sixth inductor, L7-seventh inductor, L8-eighth inductor.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
The present embodiment provides a broadband power amplifier synthesis device with a multiport adapting network, referring to fig. 1, including a distributor, a plurality of sub-circuits, a synthesizer and a post-processing circuit;
the input ends of the sub-circuits are respectively connected to the output ends of the distributor, the output ends of the sub-circuits are respectively connected to the input ends of the synthesizer, and the output ends of the synthesizer are connected to the post-processing circuit;
the sub-line comprises a broadband power amplification module and a multi-port adaptive network, wherein the input end of the broadband power amplification module is connected with the output end of the distributor, the output end of the broadband power amplification module is connected with the input end of the multi-port adaptive network, and the output end of the multi-port adaptive network is connected with the input end of the synthesizer.
As a preferable scheme of this embodiment, the number of the sub-lines is 2.
According to the embodiment, the multiport adapting network is added between the bandwidth power amplifier module and the synthesizer, so that the harmonic problem of the broadband power amplifier can be improved, and the stable operation of the power amplifier tube in the full frequency band can be ensured, and the stable output of the whole system in the full frequency band power synthesis can be ensured. The input end of the distributor is connected with the radio frequency input, and the output end of the post-stage processing circuit is connected with the radio frequency output.
The specific improvement effect can be referred to in table 1 and table 2, table 1 is temperature data tested under the wideband power amplifier synthesis power output in the prior art, and table 2 is temperature data tested under the wideband power amplifier synthesis power output in the example.
As can be seen from tables 1 and 2, the synthesized output of the amplification power of the embodiment is obviously improved, the temperature of the power amplification tube is obviously reduced, and the conditions of obvious working temperature rise and the like can not occur in the working at various frequencies and powers.
TABLE 1 PRIOR ART broadband Power Amplifier synthetic Power output
TABLE 2 broadband Power amplification synthetic Power output of this embodiment
Example 2
The embodiment is based on the technical solution of embodiment 1, and referring to fig. 2, a multi-port adaptive network is mainly further described.
In this embodiment, the multiport adaptation network includes a radio frequency signal output module and a load module;
The input end of the radio frequency signal output module and the input end of the load module are both connected with the output end of the broadband power amplifier module;
The output end of the radio frequency signal output module is connected with the input end of the synthesizer, and the output end of the load module is connected with the load module.
The multi-port adapter network of this embodiment is a three-port network, including an input port, an output port, and a load port. The input end is the input end of the radio frequency signal output module, the output end is the output end of the radio frequency signal output module, and the load end is the output end of the load module.
Based on the technical scheme of the embodiment, the input end has small in-band insertion loss to the output end, good in-band matching and good out-of-band harmonic suppression, and the input end has small out-of-band insertion loss to the load end, and has good out-of-band matching and good in-band suppression. Therefore, by accessing the multiport adapting network between the bandwidth power amplifier module and the synthesizer, the radio frequency signal in the full frequency band can pass through the input end to the output end with small insertion loss, and the harmonic wave reflected back from the band can be absorbed by the load from the input end to the load end, thereby reducing the influence of the reflected signal on the broadband power amplifier, ensuring the normal and stable operation of the broadband power amplifier, and further improving the synthesis output capacity of the broadband power amplifier.
Preferably, the radio frequency signal output module comprises a plurality of inductors and a plurality of capacitors;
One end of the first inductor L1 is an input end of the radio frequency signal output module, the other end of the first inductor L1 is connected with one end of the second inductor L2, the other end of the second inductor L2 is connected with one end of the third inductor L3, the other end of the third inductor L3 is connected with one end of the fourth inductor L4, and the other end of the fourth inductor L4 is connected with one end of the fourth capacitor C4 and is an output end of the radio frequency signal output module;
One end of the first capacitor C1 is connected to a node between the first inductor L1 and the second inductor L2, one end of the second capacitor C2 is connected to a node between the second inductor L2 and the third inductor L3, one end of the third capacitor C3 is connected to a node between the third inductor L3 and the fourth inductor L4, and the other end of the first capacitor C1, the other end of the second capacitor C2, the other end of the third capacitor C3 and the other end of the fourth capacitor C4 are all grounded.
In another aspect, the load module includes a plurality of capacitors and a plurality of inductors;
One end of the fifth capacitor C5 is an input end of the radio frequency signal output module, the other end of the fifth capacitor C5 is connected with one end of the sixth capacitor C6, the other end of the sixth capacitor C6 is connected with one end of the seventh capacitor C7, the other end of the seventh capacitor C7 is connected with one end of the eighth capacitor C8, the other end of the eighth capacitor C8 is connected with one end of the eighth inductor L8, and the load module is connected between the other end of the eighth capacitor C8 and the ground end;
One end of the fifth inductor L5 is connected to a node between the fifth capacitor C5 and the sixth capacitor C6, one end of the sixth inductor L6 is connected to a node between the sixth capacitor C6 and the seventh capacitor C7, one end of the seventh inductor L7 is connected to a node between the seventh capacitor C7 and the eighth capacitor C8, and the other end of the fifth inductor L5, the other end of the sixth inductor L6, the other end of the seventh inductor L7, and the other end of the eighth inductor L8 are all grounded.
Further, the load module adopts a resistor, one end of the first resistor R1 is connected to the other end of the eighth capacitor C8, and the other end of the first resistor R1 is grounded.
Specifically, in operation, the multiport adaptation network requires that the two paths of cutoff frequencies, input to output and input to load, be the same and of the same order. When the frequency of the radio frequency input signal is smaller than the cutoff frequency, the radio frequency signal is transmitted to the output end through the input end of the multiport adapting network, and when the frequency of the radio frequency input signal is larger than the cutoff frequency, the radio frequency signal is transmitted to the load end through the input end of the multiport adapting network and absorbed by the absorption load. The harmonic wave of the broadband power amplifier is obviously improved, the influence of the reflected signal on the broadband power amplifier is reduced, the insertion loss from the input end to the output end of the multiport adapting network is small, and the influence on the output efficiency of the synthesized power of the broadband power amplifier is also small. Fig. 3 is a diagram of a synthesized output spectrum of a wideband power amplifier in the prior art, and fig. 4 is a diagram of a synthesized output spectrum of a wideband power amplifier in the technical solution of the present embodiment, so that it can be seen that the harmonic wave of the wideband power amplifier in the present embodiment is significantly improved, the influence of the reflected signal on the wideband power amplifier is reduced, the insertion loss from the input end to the output end of the multiport adapting network is small, and the influence on the output efficiency of the synthesized power of the wideband power amplifier is also small.
Example 3
The present embodiment is based on the technical solution of embodiment 1, and mainly further description is given to the post-stage processing circuit.
In this embodiment, the post-stage processing circuit includes a filter and a directional coupler that are sequentially connected.
It is specifically noted that the filter and the directional coupler of the present embodiment can be directly implemented using conventional electrical components.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. A broadband power amplifier synthesis device with a multiport adapting network is characterized by comprising a distributor, a plurality of sub-circuits, a synthesizer and a post-processing circuit;
the input ends of the sub-circuits are respectively connected to the output ends of the distributor, the output ends of the sub-circuits are respectively connected to the input ends of the synthesizer, and the output ends of the synthesizer are connected to the post-processing circuit;
the sub-line comprises a broadband power amplification module and a multi-port adaptive network, wherein the input end of the broadband power amplification module is connected with the output end of the distributor, the output end of the broadband power amplification module is connected with the input end of the multi-port adaptive network, and the output end of the multi-port adaptive network is connected with the input end of the synthesizer.
2. The broadband power amplifier synthesis device with the multiport adapting network according to claim 1, wherein: the number of the sub-lines is 2.
3. The broadband power amplifier synthesis device with the multiport adapting network according to claim 1, wherein: the multiport adapting network comprises a radio frequency signal output module and a load module;
The input end of the radio frequency signal output module and the input end of the load module are both connected with the output end of the broadband power amplifier module;
The output end of the radio frequency signal output module is connected with the input end of the synthesizer, and the output end of the load module is connected with the load module.
4. A broadband power amplifier synthesis device with a multiport adaptation network according to claim 3, wherein: the radio frequency signal output module comprises a plurality of inductors and a plurality of capacitors;
One end of the first inductor is an input end of the radio frequency signal output module, the other end of the first inductor is connected with one end of the second inductor, the other end of the second inductor is connected with one end of the third inductor, the other end of the third inductor is connected with one end of the fourth inductor, and the other end of the fourth inductor is connected with one end of the fourth capacitor and is an output end of the radio frequency signal output module;
One end of the first capacitor is connected to a node between the first inductor and the second inductor, one end of the second capacitor is connected to a node between the second inductor and the third inductor, one end of the third capacitor is connected to a node between the third inductor and the fourth inductor, and the other end of the first capacitor, the other end of the second capacitor, the other end of the third capacitor and the other end of the fourth capacitor are grounded.
5. The broadband power amplifier synthesis device with the multiport adapting network according to claim 4, wherein: the load module comprises a plurality of capacitors and a plurality of inductors;
One end of the fifth capacitor is an input end of the radio frequency signal output module, the other end of the fifth capacitor is connected with one end of the sixth capacitor, the other end of the sixth capacitor is connected with one end of the seventh capacitor, the other end of the seventh capacitor is connected with one end of the eighth capacitor, the other end of the eighth capacitor is connected with one end of the eighth inductor, and the load module is connected between the other end of the eighth capacitor and the ground end;
One end of the fifth inductor is connected to a node between the fifth capacitor and the sixth capacitor, one end of the sixth inductor is connected to a node between the sixth capacitor and the seventh capacitor, one end of the seventh inductor is connected to a node between the seventh capacitor and the eighth capacitor, and the other end of the fifth inductor, the other end of the sixth inductor, the other end of the seventh inductor and the other end of the eighth inductor are grounded.
6. The broadband power amplifier synthesis device with the multiport adapting network according to claim 5, wherein: the load module adopts a resistor, one end of a first resistor is connected with the other end of the eighth capacitor, and the other end of the first resistor is grounded.
7. The broadband power amplifier synthesis device with the multiport adapting network according to claim 1, wherein: the post-processing circuit comprises a filter and a directional coupler which are sequentially connected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323196030.8U CN221283159U (en) | 2023-11-23 | 2023-11-23 | Broadband power amplifier synthesis device with multiport adaptation network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202323196030.8U CN221283159U (en) | 2023-11-23 | 2023-11-23 | Broadband power amplifier synthesis device with multiport adaptation network |
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| CN221283159U true CN221283159U (en) | 2024-07-05 |
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| CN202323196030.8U Active CN221283159U (en) | 2023-11-23 | 2023-11-23 | Broadband power amplifier synthesis device with multiport adaptation network |
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