CN112216943B - Ku wave band power synthesizer and amplifier - Google Patents
Ku wave band power synthesizer and amplifier Download PDFInfo
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- CN112216943B CN112216943B CN202011382946.0A CN202011382946A CN112216943B CN 112216943 B CN112216943 B CN 112216943B CN 202011382946 A CN202011382946 A CN 202011382946A CN 112216943 B CN112216943 B CN 112216943B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/19—Conjugate devices, i.e. devices having at least one port decoupled from one other port of the junction type
- H01P5/20—Magic-T junctions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
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Abstract
The present disclosure provides a ku-band power combiner and an amplifier, the power combiner including a first power combining module, the first power combining module including: the power combiner comprises a plurality of magic T power combiners, each magic T power combiner comprises a plurality of input ends and a plurality of power signals to be combined, and each magic T power combiner combines the power signals to be combined into a first power combined signal; and the input ends of the H-T power synthesizers are respectively connected with the output ends of the magic T power synthesizers, and the H-T power synthesizers synthesize the first power synthesized signals into second power synthesized signals. In a ku-band power combiner and amplifier according to the embodiments of the present disclosure, power synthesis is implemented by cascading a plurality of magic T power combiners and H-T power combiners, and signals after magic T power synthesis are power-synthesized by H-T, so that high-power synthesis can be implemented, so as to meet the use requirement of ku-band for high-power signals.
Description
Technical Field
The disclosure belongs to the technical field of radio frequency, and particularly relates to a ku-band power combiner and an amplifier.
Background
At present, a traveling wave tube is mostly adopted to realize the X-KU waveband high-power pulse power amplifier, the output power of a single tube is about 2000W, but according to the development of an EMC (electromagnetic compatibility) market, a pulse power amplifier with higher power in the frequency band is urgently needed, and further power synthesis is needed to be carried out on power amplification signals output by the existing traveling wave tube. The maximum power that this frequency channel can realize has reached 10KW at present, but if want to obtain bigger power, just receive synthesizer's power capacity restriction, current power synthesis system all uses magic T as power synthesizer, but can ' T satisfy the power requirement more than 10KW at X-KU wave band magic T's power capacity, produces the phenomenon of striking sparks easily.
Disclosure of Invention
The present disclosure is directed to solving at least one of the problems of the prior art and provides a ku-band power combiner and an amplifier.
One aspect of the present disclosure provides a ku-band power combiner comprising at least one first power combining module, the first power combining module comprising:
the power combiner comprises a plurality of magic T power combiners, each magic T power combiner comprises a plurality of input ends and a plurality of power signals to be combined, and each magic T power combiner combines the power signals to be combined into a first power combined signal;
and the input ends of the H-T power synthesizers are respectively connected with the output ends of the magic T power synthesizers, and the H-T power synthesizers synthesize the first power synthesized signals into second power synthesized signals.
Optionally, the power combiner includes a plurality of first power combining modules and at least one second power combining module, an input end of the second power combining module is connected to output ends of the plurality of first power combining modules, respectively, and the second power combining module combines the plurality of second power combining signals into a third power combining signal.
Optionally, the magic T power combiner is a double-ridge waveguide magic T power combiner, and/or the H-T power combiner is a double-ridge waveguide H-T power combiner.
Optionally, the magic T power combiner includes:
a magic T main body;
the first halving arm and the second halving arm are respectively arranged at two ends of the magic T main body along the length direction of the magic T main body, have the same electrical length and are used for inputting the power signals to be synthesized into the magic T power synthesizer;
the first H arm is arranged at one end of the magic T main body in the width direction and used for outputting the first power synthesis signal;
the E arm is arranged at one end of the magic T main body in the thickness direction and is used for connecting a load;
the electrical lengths of the H-arm and the E-arm are the same.
Optionally, the H-T power combiner includes:
an H-T body;
the third halving arm and the fourth halving arm are respectively arranged at two ends of the H-T main body along the length direction of the H-T main body, have the same electrical length and are used for inputting the first power synthesis signal to the H-T power synthesizer;
a second H arm disposed at one end of the H-T body in a width direction thereof, for outputting the second power combining signal;
optionally, the power combiner includes a first coupling module;
the input end of the first coupling module is connected with the output end of the first power synthesis module, and the output end of the first coupling module outputs the second power synthesis signal;
the first coupling module samples the second power synthesis signal to obtain first sampling power, and the first sampling power is output through a forward coupling end and a reverse coupling end of the first coupling module.
Optionally, the power combiner includes a first control and protection module, a first input end of the first control and protection module is connected to the forward coupling end of the first coupling module, a second input end of the first control and protection module is connected to the backward coupling end of the first coupling module, the first control and protection module detects a change of the first sampling power, and if the change of the first sampling power meets a preset first condition, a fault alarm is issued.
Optionally, the power combiner includes a second coupling module;
the input end of the second coupling module is connected with the output end of the second power synthesis module, and the output end of the second coupling module outputs the third power synthesis signal;
and the second coupling module samples the third power synthesis signal to obtain second sampling power, and the second sampling power is output through a forward coupling end and a reverse coupling end of the second coupling module.
Optionally, the power combiner includes a second control and protection module, a first input end of the second control and protection module is connected to the forward coupling end of the second coupling module, a second input end of the second control and protection module is connected to the backward coupling end of the second coupling module, the second control and protection module detects a change of the second sampling power, and if the change of the second sampling power meets a second preset condition, a fault alarm is issued.
Another aspect of the present disclosure provides a ku-band power amplifier, comprising the power combiner set forth above, and further comprising a plurality of power amplification modules, each of which is connected to an input of the magic-T power combiner.
In a ku-band power combiner and amplifier according to the embodiments of the present disclosure, at least one first power combining module is used to implement power combining, and specifically, power combining is implemented by cascading a plurality of magic T power combiners and H-T power combiners, and since the power capacity of the H-T power combiner is much greater than that of the magic T power combiners, there is no problem of power capacity limitation, therefore, signals after magic T power combining are power combined by H-T, and high-power combining that cannot be implemented by cascading magic T power combiners can be implemented, so as to meet the use requirement of the ku-band for high-power signals.
Drawings
Fig. 1 is a block diagram of a ku-band power combiner and amplifier according to an embodiment of the disclosure;
fig. 2 is a block diagram of a ku band power combiner and amplifier according to another embodiment of the disclosure;
fig. 3 is a schematic structural diagram of a magic T power combiner according to another embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an H-T power combiner according to another embodiment of the present disclosure;
fig. 5 is a schematic diagram of a ku-band power combiner shown in fig. 1.
Detailed Description
For a better understanding of the technical aspects of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.
Unless otherwise specifically stated, technical or scientific terms used in the present disclosure shall have the ordinary meaning as understood by those of ordinary skill in the art to which the present disclosure belongs. The use of "including" or "comprising" and the like in this disclosure does not limit the referenced shapes, numbers, steps, actions, operations, members, elements and/or groups thereof, nor does it preclude the presence or addition of one or more other different shapes, numbers, steps, actions, operations, members, elements and/or groups thereof or those. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number and order of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present disclosure, "a plurality" means two or more unless specifically limited otherwise.
In some descriptions of the invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," or "fixed" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect through an intermediate medium, whether internal to two elements or an interactive relationship between two elements. Also, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are used merely to indicate a relative positional relationship, which may also be changed accordingly when the absolute position of the object being described is changed.
In the present disclosure, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "above" a second feature may be directly above or obliquely above the second feature, or merely that the first feature is at a higher level than the second feature, and a first feature "below," "under," and "under" a second feature may be directly below or obliquely below the first feature, or merely that the first feature is at a lower level than the second feature.
It will also be understood that when a layer is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may also be present; it will also be understood that when an element such as a layer, region or substrate is referred to as being "on," "connected to," "electrically connected to" or "electrically coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element or layer, there are no intervening elements or layers present. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items
The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise. Also, it should be understood that the dimensions of the various elements shown in the figures are not drawn to scale, for ease of description, and that techniques, methods and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular other example may have a different value. It should be noted that: like symbols and letters represent like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 1, the present disclosure proposes a ku-band power combiner 100, including at least one first power combining module 110, which includes a plurality of magic T power combiners 111 and at least one H-T power combiner 112; each magic T power combiner 111 includes a plurality of input ends, each input end is used for inputting a path of power signal to be combined, the plurality of input ends input a plurality of power signals to be combined to the magic T power combiner, and each magic T power combiner 111 combines the plurality of power signals to be combined into a first power combined signal; the input end of the H-T power combiner 112 is connected to the output ends of the plurality of magic T power combiners, respectively, each magic T power combiner 111 transmits the first power combined signal to the H-T power combiner 112 through the output end thereof, and the H-T power combiner 112 combines the plurality of first power combined signals into the second power combined signal and outputs the second power combined signal through the output end thereof.
For example, as shown in fig. 1, a plurality of power signals to be synthesized are respectively input to a magic T power synthesizer through a plurality of input ends of the magic T power synthesizer, the plurality of power signals to be synthesized are synthesized into a first power synthesis signal in the magic T power synthesizer, each magic T power synthesizer transmits the first power synthesis signal to an H-T power synthesizer through an output end thereof, the plurality of magic T power synthesizers respectively input a plurality of first power synthesis signals to the H-T power synthesizer, the plurality of first power synthesis signals are synthesized into a second power synthesis signal in the H-T power synthesizer, the power signals to be synthesized are exemplarily signals with power of 65dBm, the power signals to be synthesized are synthesized into signals with power of 67.5dBm through the magic T power synthesizer, that is, the first power synthesis signals, the two magic T power synthesizers respectively output signals with power of 67.5dBm, the two paths of first power synthesis signals are synthesized into a signal with the power of 70dBm through an H-T power synthesizer, namely a second power synthesis signal.
The ku-band power combiner provided in the embodiment realizes power combination by using at least one first power combination module, and specifically realizes power combination by cascading a plurality of magic T power combiners and one H-T power combiner.
The specific structure of the power combiner will be further explained in conjunction with fig. 1.
Illustratively, as shown in fig. 1, the power combiner 100 includes a plurality of first power combining modules 110 and at least one second power combining module 120, and the second power combining module includes at least one H-T power combiner, such as one H-T power combiner, or two H-T power combiners cascaded to one H-T power combiner, or two magic T power combiners cascaded to one H-T power combiner, which may be designed by those skilled in the art according to practical requirements, and in this embodiment, the input terminals of the second power combining module 120 are respectively connected to the output terminals of the plurality of first power combining modules 110, and the second power combining module 120 combines the plurality of second power combined signals into a third power combined signal and outputs the third power combined signal through the output terminal thereof.
For example, as shown in fig. 1, the plurality of first power combining modules respectively transmit the second power combined signals to the second power combining module through output ends thereof, and the second power combining module combines the plurality of second power combined signals into a third power combined signal, for example, the second power combining module is an H-T power combiner, and the second power combined signals with two paths of power of 70dBm are combined into the third power combined signal with power of 71.8dBm through the second power combining module.
The KU-band power combiner provided in the embodiment further synthesizes second power synthesis signals output by the plurality of first power synthesis modules by using one second power module according to the condition that the plurality of first power synthesis modules are provided, and further, the second power module uses a structure comprising at least one H-T power combiner, so that the power of the output signals is improved by further utilizing the characteristic of large power capacity of the H-T power combiner, and the power combiner in the embodiment can improve the maximum output power of an X-KU-band pulse power amplifier to 15KW, that is, a third power synthesis signal with 15KW of the output power, thereby breaking through the technical bottleneck that the power capacity of the KU-band signals in the prior art cannot reach more than 10 KW.
The specific structure of the magic T power combiner and the H-T power combiner will be further explained below with reference to fig. 3 to 5.
Illustratively, as shown in fig. 3, the magic T power combiner 111 is a double-ridged waveguide magic T power combiner, and the magic T power combiner 111 includes a magic T body 1111, a first halving arm 1112, a second halving arm 1113, a first H arm 1114 and an E arm 1115; illustratively, the magic T body 1111 is a rectangular parallelepiped structure; the first halving arm 1112 and the second halving arm 1113 are respectively arranged at two ends of the magic T main body 1111 in the length direction, namely at the left end and the right end of the magic T main body in the x direction in the figure, the electrical lengths of the first halving arm 1112 and the second halving arm 1113 are the same, and the first halving arm 1112 and the second halving arm are respectively used as input ends for inputting power signals to be synthesized to the magic T power synthesizer 111; the first H-arm 1114 is disposed at one end of the magic T body 1111 in the width direction thereof, that is, the front end of the magic T body in the y direction in the figure, and serves as an output end for the magic T power combiner 111 to output the first power combined signal; the E-arm 1115 is disposed at one end of the magic T body along the thickness direction thereof, that is, the upper end of the magic T body along the z direction in the figure, and is used for connecting a matching load, and those skilled in the art can select matching loads of different sizes according to actual use requirements, and the embodiment is not particularly limited; the electrical lengths of the H-arm and the E-arm are the same.
Illustratively, as shown in fig. 3, the central region of the first halving arm 1112 is provided with a first through hole 1116 extending through the thickness thereof, illustratively, the first through hole has an H-shaped cross section, and the length direction of the first through hole is parallel to the width direction of the magic T main body, i.e. the length direction of the cross section H is along the y direction shown in the figure, illustratively, the second halving arm, the first H-arm and the E-arm correspond to the structure of the first halving arm, i.e. the central region of the second halving arm 1113 is provided with a second through hole (not shown in the figure) extending through the thickness thereof, the second through hole has an H-shaped cross section and the length direction thereof is parallel to the width direction of the magic T main body, the central region of the first H-arm 1114 is provided with a third through hole 1117 extending through the thickness thereof, the third through hole has an H-shaped cross section and the length direction thereof is parallel to the length direction of the magic T main body, that is, the length direction of the section H is along the x direction shown in the figure, the center area of the E-arm 1115 is provided with a fourth through hole 1118 penetrating the thickness thereof, the section of the fourth through hole is H-shaped, and the length direction thereof is parallel to the width direction of the magic T main body.
Illustratively, as shown in fig. 4, the H-T power combiner 112 is a double-ridge waveguide H-T power combiner, which includes an H-T body 1121, a third halving arm 1122, a fourth halving arm 1123, and a second H arm 1124; illustratively, the H-T body 1121 is a rectangular parallelepiped structure; the third equalizing arm 1122 and the fourth equalizing arm 1123 are respectively disposed at two ends of the H-T body 1121 along the length direction thereof, i.e., at the left and right ends of the H-T body along the x direction in the figure, and the third equalizing arm 1122 and the fourth equalizing arm 1123 have the same electrical length and are respectively used as input ends for inputting a first power combining signal to the H-T power combiner 112; the second H arm 1124 is disposed at one end of the H-T body 1121 in the width direction thereof, i.e., the front end of the H-T body in the y direction in the drawing, and serves as an output terminal for the H-T power combiner to output a second power combined signal.
Illustratively, as shown in fig. 4, the third arm 1122 is provided at its central region with a fifth through hole 1125 having an H-shaped cross-section and having a length direction parallel to the width direction of the H-T body, i.e., the length direction of the H-T body is along the y-direction shown in the figure, and the fourth arm 1123 is provided at its central region with a sixth through hole (not shown) having an H-shaped cross-section and a length direction parallel to the width direction of the H-T body, i.e., the second H arm 1124 is provided at its central region with a seventh through hole 1126 having an H-shaped cross-section and a length direction parallel to the length direction of the H-T body, i.e. the length direction of the section H is along the x-direction as shown in the figure.
Illustratively, as shown in fig. 3, first mounting portions 1119 are respectively disposed on the first halving arm 1112, the second halving arm 1113, the first H-arm 1114 and the E-arm 1115, and illustratively include mounting holes and mounting posts respectively distributed at the edges of the surfaces of the first halving arm 1112, the second halving arm 1113, the first H-arm 1114 and the E-arm 1115. Illustratively, as shown in fig. 4, second mounting portions 1127 are disposed on the third, fourth and second equally-divided arms 1122, 1123 and 1124, respectively, and illustratively include mounting holes and posts distributed at the edges of the surfaces of the third, fourth and second equally-divided arms 1122, 1123 and 1124, respectively. Illustratively, as shown in fig. 5, the magic T power combiner 111 is connected to a first end of the metal connector 101 along the length direction thereof through a first mounting portion, the H-T power combiner 112 is connected to a second end of the metal connector 101 along the length direction thereof through a second mounting portion, and the H-T power combiner 112 is connected to the second power combining module 120, where the second power combining module is an H-T power combiner, and the H-T power combiner 112 and the second power combining module 120 may be directly connected or indirectly connected through the first coupling module 130.
The ku-band power combiner provided in the embodiment further explains the specific structures of the magic T power combiner and the H-T power combiner, and the magic T power combiner with the structure has better isolation between two equal arms, so that the stability of the whole machine is improved.
The specific structure of the power combiner will be further explained in conjunction with fig. 1 and 2.
Illustratively, as shown in fig. 1, the power combiner 100 includes a first coupling module 130, and illustratively, the power combiner may include a plurality of first coupling modules, for example, the number of the first coupling modules corresponds to the number of the first power combining modules, so as to ensure that each first power combining module matches with a corresponding first coupling module for sampling the second power combined signal output by the first power combining module; an input end of the first coupling module 130 is connected to an output end of the first power combining module 110, and an output end of the first coupling module 130 outputs a second power combining signal, for example, if the power combiner only includes the first power combining module but not the second power combining module, the second power combining signal output by the first coupling module is used as a power combining signal finally output by the power combiner, if the power combiner includes the first power combining module and the second power combining module, an output end of the first coupling module is connected to an input end of the second power combining module, and the first coupling module transmits the second power combining signal to the second power combining module; the first coupling module 130 samples the second power synthesis signal to obtain a first sampling power, and outputs the first sampling power through the forward coupling terminal 131 and the backward coupling terminal 132 of the first coupling module 130.
Illustratively, as shown in fig. 1, the power combiner 100 includes a first control and protection module 140, and illustratively, the power combiner may include a plurality of first control and protection modules, for example, the number of the first control and protection modules corresponds to the number of the first coupling modules, so as to ensure that the first sampling power output by each first coupling module is connected to a corresponding first control and protection module, which is used to monitor power variation and find faults in time, and a person skilled in the art may also configure the corresponding first control and protection module for a specific one or more first coupling modules according to actual usage requirements, without specific limitation in this embodiment, a first input terminal 141 of the first control and protection module 140 is connected to the forward coupling terminal 131 of the first coupling module 130, a second input terminal 142 of the first control and protection module 140 is connected to the reverse coupling terminal 132 of the first coupling module 130, the first control and protection module 140 receives the first sampling power sent by the first coupling module 130, and detecting the change of the first sampling power, and if the change of the first sampling power meets a preset first condition, issuing a fault alarm, illustratively, the first condition is that the reverse power is increased, for example, when the reverse power is greater than 1000W and (the reverse power/the forward power) is greater than or equal to 1/4, judging that the first condition is met, triggering an over-standing wave alarm, and issuing an alarm. Specifically, when the second power synthesized signal output by the first power synthesis module, that is, the second power synthesized signal output by the H-T power synthesizer, is abnormal in power or excessively reflected in power, the first coupling module samples the second power synthesized signal to obtain a first sampled power, which is changed in power, the first protection and control module detects the power change and compares the power change with a preset first condition, and if the power change is met, a fault alarm is issued, for example, an alarm sound is issued or the power synthesizer is controlled to be shut down, so as to protect the power synthesizer.
Illustratively, as shown in fig. 1, the power combiner 100 includes a second coupling module 150, and illustratively, the power combiner may include a plurality of second coupling modules, for example, the number of the second coupling modules corresponds to the number of the second power combining modules, so as to ensure that each second power combining module matches with a corresponding second coupling module for sampling the third power combined signal output by the second power combining module; the input end of the second coupling module 150 is connected to the output end of the second power combining module 120, and the output end of the second coupling module 150 outputs a third power combining signal as a power combining signal finally output by the power combiner; the second coupling module 150 samples the third power synthesized signal to obtain a second sampling power, and outputs the second sampling power through the forward coupling terminal 151 and the backward coupling terminal 152 of the second coupling module 150.
Illustratively, as shown in fig. 1, the power combiner 100 includes a second control and protection module 160, and illustratively, the power combiner may include a plurality of second control and protection modules, for example, the number of the second control and protection modules corresponds to the number of the second coupling modules, so as to ensure that the second sampling power output by each second coupling module is connected to a corresponding second control and protection module, which is used to monitor power variation and find faults in time, and a person skilled in the art may also configure the corresponding second control and protection module for a specific one or more second coupling modules according to actual usage requirements, without specific limitation in this embodiment, a first input terminal 161 of the second control and protection module 160 is connected to the forward coupling terminal 151 of the second coupling module 150, a second input terminal 162 of the second control and protection module 160 is connected to the reverse coupling terminal 152 of the second coupling module 150, the second control and protection module 160 receives the second sampling power sent by the second coupling module 150, and detecting a change of the second sampling power, and if the change of the second sampling power meets a preset second condition, issuing a fault alarm, where, for example, a determination threshold of the second condition is N times of a determination threshold of the first condition, where N is the number of the first power combining modules, and for example, the second condition is that the reverse power is increased, for example, when the reverse power is greater than 2000W and (reverse power/forward power) is greater than or equal to 1/4, determining that the second condition is met, triggering an over-standing wave alarm, and issuing an alarm. Specifically, when the third power synthesized signal output by the second power synthesis module is abnormal or the power reflection is too large, the second coupling module samples the third power synthesized signal to obtain a second sampled power, the second coupling module may generate a power change, the second protection control module detects the power change and compares the power change with a preset second condition, and if the power change is met, a fault alarm is issued, for example, an alarm sound is issued or the power synthesizer is controlled to be shut down, so as to protect the power synthesizer.
For example, as shown in fig. 2, the second control and protection module 160 further includes a third input terminal 163 and a fourth input terminal 164, the third input terminal 163 of the second control and protection module 160 is connected to the forward coupling terminal 131 of the first coupling module 130, the fourth input terminal 164 of the second control and protection module 160 is connected to the reverse coupling terminal 132 of the first coupling module 130, the first coupling module 130 sends the first sampled power to the second control and protection module 160, the second control and protection module 160 detects a change of the first sampled power, and if the change of the first sampled power meets a preset first condition, a fault alarm is issued, that is, the second control and protection module may be used to detect not only a power change of the second sampled power, but also a power change of the first sampled power, and a function of double warning is implemented by one control and protection module.
In the ku-band power combiner provided in the embodiment, potential safety hazards that may occur in the power combiner are further monitored by using the coupling module and the control and protection module in a matching manner, for example, the potential safety hazards caused by the isolation problem in the use process of the power combiner, and the like.
As shown in fig. 1 and fig. 2, the present disclosure provides a ku-band power amplifier, which includes the aforementioned power combiner 100, and further includes a plurality of power amplification modules 200, where each power amplification module 200 is connected to an input end of the magic T power combiner 111 in the first power combining module 110, and the power amplification modules are configured to amplify power and transmit the power to the magic T power combiner as power signals to be combined, and in an example, the power amplification modules are traveling wave tubes.
The ku-band power amplifier provided in the embodiment uses the power synthesizer described above, and realizes power synthesis by cascading a plurality of magic T power synthesizers and an H-T power synthesizer, and because the power capacity of the H-T power synthesizer is much larger than that of the magic T power synthesizer, the H-T power synthesizer does not have the problem of limited power capacity, a signal subjected to magic T power synthesis is subjected to power synthesis by H-T, so that high-power synthesis which cannot be realized by only using the magic T power synthesizer cascade can be realized, and the power amplifier can meet the use requirement of the ku-band on a high-power signal.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
It is to be understood that the above embodiments are merely exemplary embodiments that are employed to illustrate the principles of the present disclosure, and that the present disclosure is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the disclosure, and these are to be considered as the scope of the disclosure.
Claims (8)
1. A ku band power combiner, the power combiner comprising at least a first power combining module, the first power combining module comprising:
the power combiner comprises a plurality of magic T power combiners, each magic T power combiner comprises a plurality of input ends and a plurality of power signals to be combined, and each magic T power combiner combines the power signals to be combined into a first power combined signal;
the input ends of the H-T power synthesizers are respectively connected with the output ends of the magic T power synthesizers, and the H-T power synthesizers synthesize the first power synthesized signals into second power synthesized signals;
the power combiner comprises a plurality of first power combining modules and at least one second power combining module, wherein the input end of the second power combining module is respectively connected with the output ends of the plurality of first power combining modules, and the second power combining module combines a plurality of second power combining signals into a third power combining signal;
the second power combining module comprises at least one H-T power combiner;
the power combiner comprises a first coupling module;
the input end of the first coupling module is connected with the output end of the first power synthesis module, and the output end of the first coupling module outputs the second power synthesis signal;
the first coupling module samples the second power synthesis signal to obtain first sampling power, and the first sampling power is output through a forward coupling end and a reverse coupling end of the first coupling module.
2. A power combiner as claimed in claim 1, wherein the magic T power combiner is a double-ridged waveguide magic T power combiner and/or the H-T power combiner is a double-ridged waveguide H-T power combiner.
3. A power combiner as recited in claim 2, wherein said magic T power combiner comprises:
a magic T main body;
the first halving arm and the second halving arm are respectively arranged at two ends of the magic T main body along the length direction of the magic T main body, have the same electrical length and are used for inputting the power signals to be synthesized into the magic T power synthesizer;
the first H arm is arranged at one end of the magic T main body in the width direction and used for outputting the first power synthesis signal;
the E arm is arranged at one end of the magic T main body in the thickness direction and is used for connecting a load;
the electrical lengths of the H-arm and the E-arm are the same.
4. The power combiner of claim 2, wherein the H-T power combiner comprises:
an H-T body;
the third halving arm and the fourth halving arm are respectively arranged at two ends of the H-T main body along the length direction of the H-T main body, have the same electrical length and are used for inputting the first power synthesis signal to the H-T power synthesizer;
and the second H arm is arranged at one end of the H-T main body along the width direction of the H-T main body and is used for outputting the second power synthesis signal.
5. The power combiner of claim 1, wherein the power combiner comprises a first control and protection module, a first input end of the first control and protection module is connected to the forward coupling end of the first coupling module, a second input end of the first control and protection module is connected to the reverse coupling end of the first coupling module, the first control and protection module detects a change of the first sampling power, and a fault alarm is issued if the change of the first sampling power meets a preset first condition.
6. A power combiner as recited in claim 1, wherein said power combiner comprises a second coupling module;
the input end of the second coupling module is connected with the output end of the second power synthesis module, and the output end of the second coupling module outputs the third power synthesis signal;
and the second coupling module samples the third power synthesis signal to obtain second sampling power, and the second sampling power is output through a forward coupling end and a reverse coupling end of the second coupling module.
7. The power combiner of claim 6, wherein the power combiner comprises a second control and protection module, a first input end of the second control and protection module is connected to the forward coupling end of the second coupling module, a second input end of the second control and protection module is connected to the backward coupling end of the second coupling module, the second control and protection module detects a change of the second sampling power, and if the change of the second sampling power meets a second preset condition, a fault alarm is issued.
8. A ku-band power amplifier comprising a power combiner as claimed in any one of claims 1 to 7, the power amplifier further comprising a plurality of power amplification modules, each of the power amplification modules being connected to an input of the magic-T power combiner.
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| US10176431B2 (en) * | 2016-03-02 | 2019-01-08 | University Of Maryland, College Park | Low-noise, ultra-low temperature dissipative devices |
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