CN102509838B - Broadband Operating Waveguide Traveling Wave Power Combining Amplifier - Google Patents

Abstract

The invention provides a broadband working waveguide traveling wave power synthesis amplifier which comprises two broadband in-phase or anti-phase waveguide traveling wave power distribution/synthesizers and at least one power amplification module. The broadband in-phase or anti-phase waveguide traveling wave power distribution/synthesis device comprises an input waveguide, at least one stage of coupling structure, more than one output waveguide and a matching transition structure for connecting the coupling structure and the output waveguides; each stage of coupling structure is arranged perpendicular to the traveling wave direction of the input waveguide, and except the last stage of coupling structure, a matching diaphragm for preventing the electromagnetic field in the waveguide from forming a reflection phenomenon in each stage of coupling structure during propagation is arranged at each stage of coupling structure; the output waveguides are arranged in a direction perpendicular to the input waveguides, the lengths of the output waveguides connected with each stage of coupling structure are different, and output signals are in equal amplitude and same phase finally. The power synthesis amplifier of the invention is a multi-path, broadband and high-efficiency synthesis amplifier applied to microwave high-end and millimeter wave bands.

Description

Broadband Operating Waveguide Traveling Wave Power Combining Amplifier

technical field

The invention relates to a power synthesis technology for microwave and millimeter wave frequency bands, in particular to a waveguide traveling wave power synthesis amplifier capable of broadband operation.

Background technique

In the microwave and millimeter wave frequency bands, people generally use a power combining network to combine the output power of multiple solid-state devices to realize high-power solid-state devices. There are two types of power synthesis technology: oscillation synthesis and amplification synthesis, among which power synthesis amplifiers are widely used. Regardless of the type, the output power of multiple solid-state devices is synthesized through a power synthesis network to realize a high-power synthesis amplifier. The nature of the power combining network directly determines the performance of the synthesizing amplifier. Therefore, the focus of power combining technology research is mainly on the properties of the power combining network, and to explore which combining network topology can achieve the maximum efficiency of wideband and large number of power combining.

In recent years, some waveguide traveling wave power combining amplifier structures have been reported successively. This structure is vertically inserted into the multi-channel coupling structure along the propagation direction of the electromagnetic field of the input waveguide. After the electromagnetic wave enters from the input waveguide, power is sequentially fed into the multi-channel coupling structure during the propagation process. At the same time, the matching diaphragm is used, so that there is no reflection at each coupling structure when the electromagnetic field in the waveguide propagates, and traveling wave transmission is realized. The coupling structure is connected with the amplifier circuit, and the amplified power is sequentially fed into the output waveguide through the coupling structure, and output at the output port of the waveguide with equal amplitude and same phase to realize power combination. This structure is expected to realize Ka-band and even higher-band multi-channel amplifier synthesis to achieve high power output. Because the amplifier array is placed along the direction of the traveling wave, theoretically, this structure has no limitation on the number of chips, and at the same time has the characteristics of low loss of the waveguide. Therefore, using this structure is expected to obtain high Efficient, high-power, compact and heat-dissipating synthesis amplifier.

The traveling wave power divider/combiner based on the microstrip structure can realize wideband power distribution and output port isolation. However, as the frequency increases, the loss of the microstrip line becomes larger. As the number of synthesis paths increases, the length of the transmission line increases, and the loss will increase with the increase of the number of synthesis paths, which will reduce the synthesis efficiency of the synthesis amplifier, and excessive loss will even make the synthesis amplifier useless. Therefore, in the microwave high-end and millimeter wave bands, the traveling wave power distribution/combination amplifier based on the microstrip structure is not suitable for multi-channel power synthesis. Based on the waveguide traveling wave power combining structure, it has been widely used in the microwave and millimeter wave bands due to its low loss, high power capacity and good heat dissipation. For the waveguide traveling wave power combining structure, none of the reported structures can solve a problem, that is, the phases of the output ports of the power divider are inconsistent due to the inconsistency of the transmission path length of the microwave signal from the input port to the output of each coupling structure. When the phases of the output ports of the power divider are inconsistent, the input reflection signal of the amplifier unit connected to the output port of the power divider will enter the other amplifier units, thereby affecting each other, making the input signals of each amplifier unit inconsistent, which will cause the amplifier unit Inconsistent working status will seriously affect the stability and linearity of the power synthesis amplifier. It can be seen from this that the previously proposed traveling-wave power combining amplifier structure generally works near the frequency point of the in-phase (or inverting) output of the power divider, and is only suitable for narrow-band work. Therefore, it is very necessary to develop a traveling-wave power divider/combiner structure that can realize broadband in-phase or inverting output to realize a broadband power combining amplifier.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art, and provide a broadband working waveguide traveling wave power combining amplifier, which uses a broadband in-phase or anti-phase output waveguide traveling-wave power distributor/combiner to realize power equal amplitude and in-phase Output, to ensure that the input power of the amplifier unit of the synthetic amplifier is in a state of equal amplitude and phase in a wide frequency band. The broadband working waveguide traveling wave power combining amplifier can realize multi-channel, broadband and high-efficiency (low loss) power combining in microwave high-end and millimeter wave bands.

In order to achieve the above object, the present invention is achieved through the following technical solutions: a broadband working waveguide traveling wave power combining amplifier, characterized in that: it includes two broadband in-phase or anti-phase output waveguide traveling wave power splitter/combiner and at least A power amplifier module, wherein a broadband in-phase or anti-phase output waveguide traveling-wave power divider/combiner is used as a power divider, and another wide-band in-phase or anti-phase output waveguide traveling-wave power divider/combiner is used as a power combiner; the broadband The same-phase or anti-phase output waveguide traveling wave power splitter/combiner includes an input waveguide, at least one coupling structure, more than one output waveguide, and a matching transition structure connecting the coupling structure and the output waveguide; the matching transition structure is used to realize coupling The impedance matching between the structure and the output waveguide achieves the matching output of the maximum bandwidth; the coupling structure of each level is arranged perpendicular to the traveling wave direction of the input waveguide, except for the last level of coupling structure, each level of coupling structure is provided with a A matching diaphragm that prevents the formation of reflection phenomenon in each coupling structure when the electromagnetic field propagates in the waveguide, the matching diaphragm refers to an inductive diaphragm, and the matching diaphragm is located between each coupling structure and the next coupling structure; The output waveguide is arranged perpendicular to the direction of the input waveguide, and the lengths of the output waveguides connected to each stage of the coupling structure are different, and the length of the output waveguide corresponding to the first stage coupling structure is the longest, which is shortened successively; the length of each stage of the output waveguide The following conditions are met: the length of the output waveguide of any stage is equal to the sum of the length of the input waveguide from the beginning of the stage to the coupling structure of the last stage and the length of the output waveguide of the last stage, and finally realizes the output signal amplitude and phase of the output port Consistent, so that the input signal of the amplifier unit in the synthesizing amplifier is in the same amplitude and in phase state in the wide frequency band, so as to realize the wide band waveguide traveling wave power synthesizing.

The power amplifier module is located between the power divider and the power combiner, the input port of each power amplifier is respectively connected to an output waveguide of the power divider, and the output port is connected to an input waveguide of the power combiner; The power combiner and the power divider are placed in a rotational docking form, and the output waveguide corresponding to the first-stage coupling structure of the power divider corresponds to the input waveguide corresponding to the last-stage coupling structure of the power combiner;

The power divider includes a bottom layer, a middle layer and a top layer.

More specifically, each stage of the coupling structure is provided with at least one coupling unit, and each coupling unit of each stage of the coupling structure is located on one side or both sides of the input waveguide and is symmetrical to the center line of the side broadside. s position.

The coupling structure is used to realize equal-amplitude output of signals within a wide frequency band, and the coupling structure refers to one of the following types: microstrip probe-type coupling structure, coplanar waveguide probe-type coupling structure, coaxial probe-type coupling structure and a ridge waveguide probe type coupling structure.

The ridge waveguide probe type coupling structure includes a ridge waveguide as the main body and a probe structure formed by extending the raised conductor ridge on the ridge waveguide for insertion into the input waveguide. The ridge waveguide probe is Full waveguide structure, no dielectric loss, low loss and easy processing.

The matching transition structure refers to one of the following types: a single quarter impedance converter, a multi-section quarter impedance converter, a Chebyshev impedance converter and a tapered transmission line.

The broadband working waveguide traveling wave power synthesizing amplifier is symmetrical with respect to the horizontal section of the centerline of the input and output waveguide propagation directions.

The principle of the broadband in-phase or anti-phase power distribution/combiner in the broadband working waveguide traveling wave power combining amplifier proposed by the present invention is as follows: when the microwave signal enters from the input waveguide, a part of the power is simultaneously fed into the first stage during the propagation process M-way coupling unit, the remaining power continues to be transmitted along the waveguide, and then fed into the next-stage M-way coupling unit. When there are N levels of coupling structures in total, and each level of M coupling units, M×N signals can be derived. The microwave signal entering the coupling unit is transmitted to the output waveguide through a broadband matching transition structure, and finally output at the output port. Due to the different lengths of the output waveguides, the phase lag caused by the microwave signal transmission in each output waveguide is different. The closer to the input coupling structure, the greater the phase lag caused by the output waveguide, and finally realize the output signal of the output port. The phase is consistent, so that the input signal of the amplifier unit in the synthesizing amplifier is in the state of equal amplitude and same phase in the wide frequency band, so as to realize the wide band waveguide traveling wave power combining. In this structure, the matching diaphragm is used at the same time, so that when the electromagnetic field in the waveguide propagates, there is no reflection at each level of M-way coupling units, thereby realizing traveling wave transmission.

The broadband working waveguide traveling wave power synthesizing amplifier of the present invention is a broadband power synthesizing amplifier composed of the broadband in-phase or anti-phase waveguide traveling wave power distributor/combiner. The power combining amplifier includes a power divider, at least one power amplifier module, and a power combiner. The structures of the power divider and the power combiner are broadband in-phase or reverse-phase output waveguide traveling-wave power dividers, and the power combiner is just the reverse application of the power divider. The power combiner and the power divider are placed in a rotating docking form. That is to say, the output port of the first stage of the power divider will correspond to the input port of the final stage of the power combiner. The power amplifier module is located between the power divider and the power combiner, its input port is connected to the output port of the power divider, and the output port is connected to the input port of the power combiner. The form of the power amplifier module is not fixed, it only needs to meet the above port requirements. The power amplifier module is a waveguide port, and can be combined with other high-performance power combining structures, for example, a coupler structure or a magic T structure can be combined in the power amplifier module.

Compared with the prior art, the present invention has the following advantages:

1. The present invention provides a broadband working waveguide traveling wave power synthesizing amplifier. By rationally designing the coupling structure and the length of the output waveguide, it can ensure that the output power of the power distribution/combiner is output in the same amplitude and in phase within a wide frequency band. When the power splitter/combiner is applied to the power synthesis amplifier technology, it ensures that the input signal of the amplifier unit of the power synthesis amplifier is in the state of equal amplitude and same phase in a wide frequency band, thereby realizing broadband waveguide traveling wave power synthesis.

2. In the broadband working waveguide traveling wave power combining amplifier provided by the present invention, the power distribution/combiner of the power distribution/combiner can ensure that the output power of the power distribution/combiner is output in the same phase within a wide frequency band by properly extending the length of the output waveguide.

3. In the broadband working waveguide traveling wave power synthesizing amplifier provided by the present invention, the power splitter/combiner of the power splitter realizes equal-amplitude output of the power splitter in a wide frequency band by rationally designing the coupling structure and the distance between the coupling structures.

4. The broadband working waveguide traveling wave power synthesis amplifier provided by the present invention utilizes the space power synthesis technology to couple the probe at a position symmetrical to the centerline of the broadside on one side or both sides of the input waveguide to improve the synthesis efficiency. While ensuring the number of circuits, the loss remains basically unchanged, which can realize high-efficiency power combining.

5. In the broadband working waveguide traveling wave power combining amplifier provided by the present invention, the input/output ports of the power distribution/combining device and the amplifier module are in the form of waveguide ports. This structure is very easy to combine with other high-performance power combining structures, such as coupling device structure, magic T structure, etc. The power amplifier module can be made separately, which is convenient for processing and debugging.

6. The ridge waveguide probe type coupling waveguide traveling wave power divider provided by the present invention is a full waveguide structure without introducing any medium, so there is no dielectric loss and only very low conductor loss. This power divider allows very efficient power combining.

7. The ridge waveguide probe type coupling waveguide traveling wave power divider provided by the present invention is a waveguide structure, and each part is formed by digging out various cavities in the same piece of metal. This structure is easy to machine and install .

Description of drawings

Fig. 1 is the perspective view of the synthesizing amplifier formed by the broadband working waveguide traveling wave power divider of ridge waveguide probe type coupling;

Fig. 2 is a partial diagram of part A in Fig. 1;

Fig. 3 is the bottom of the broadband working waveguide traveling wave power divider 11 of ridge waveguide probe type coupling in Fig. 1;

Fig. 4 is the processing structure diagram of the bottom layer 111 of the broadband working waveguide traveling wave power divider 11 coupled by the ridge waveguide probe type coupling in Fig. 1;

Fig. 5 is the processing structure diagram of the intermediate layer 112 of the broadband working waveguide traveling wave power divider 11 coupled by the ridge waveguide probe type coupling in Fig. 1;

Fig. 6 is a structural diagram of the power amplifier module 12 in Fig. 1;

Fig. 7 is a structural diagram of a broadband working waveguide traveling wave power splitter coupled with a microstrip probe type;

Fig. 8 is a structural diagram of a broadband working waveguide traveling wave power splitter coupled with coaxial probe type;

Fig. 9 is a structural diagram of a coaxial probe type coupled coaxial output broadband working waveguide traveling wave power divider.

Detailed ways

The present invention will be described in further detail below with reference to the accompanying drawings and examples, but the embodiments of the present invention are not limited thereto.

Embodiment one

This embodiment uses a ridge waveguide probe type coupling structure to illustrate the basic idea of the present invention. As shown in the perspective view of the synthesizing amplifier composed of the ridge waveguide probe-type coupled broadband in-phase or anti-phase waveguide traveling-wave power divider in Figure 1, the overall structure is composed of a power divider 11, an amplifier module 12 and a power combiner 13. The power combiner 13 is consistent with the power divider 11 in terms of structure, except that it is placed in the form of rotating butt joint with the power divider along the vertical direction. The power splitter 11 includes an input standard waveguide 21, a ridge waveguide probe type coupling structure 31-34, a matching diaphragm 41-43, a matching transition structure 231-234 from the ridge waveguide probe type coupling structure to an output waveguide, and an output waveguide 241 -244 and other parts. The power is input from the input waveguide 21 of the power divider 11, and is fed into the coupling structures 34-31 at all levels sequentially in equal proportions during propagation, transmitted to the power amplifier module through the output waveguides 244-241 for amplification, and then passed through the power combiner 13. The input waveguides 271-274 are input to the coupling structures 101-104, and are sequentially fed into the output waveguide 28 of the power combiner 13. These microwave powers are output at the output port of the power combiner 13 with equal amplitude and same phase to realize power combination. In this embodiment, each stage of the coupling structure of the power divider and the power combiner inserts two-way coupling units symmetrically about the center line on one wide side of the standard input waveguide 21. There are four-stage coupling structures, and a total of 8 waveguide outputs . More stages and more coupling units per stage can be constructed.

The entire structure is symmetrical about a horizontal section through the centerline of the input and output waveguide propagation directions.

FIG. 2 is a partial view of part A in FIG. 1 , which specifically shows the ridge waveguide probe type coupling structure 34 and the matching transition structure 234 from the ridge waveguide probe type coupling structure to the output waveguide. The performance of these two parts has a great influence on the characteristics of the waveguide traveling wave power divider. What is shown in FIG. 2 is a ridge waveguide probe type coupling structure 34 , including an insertion waveguide probe part 341 , a high impedance section 342 and a ridge waveguide transmission part 343 . The length of the waveguide probe part inserted into each coupling structure is different, which is related to the coupling degree required by each coupling structure, and the probe part of the last stage 31 is the longest. The high-impedance segment 342 is a small section of ridge waveguide with high impedance, which is realized by cutting off part of the conductor ridge, and can also be realized by changing the cavity size of the ridge waveguide. Adjusting the length of this high-impedance line, as well as its impedance, can greatly vary the reactance introduced by the probe. The introduction of the high-impedance line is beneficial to realize the matching between the ridge waveguide and the input waveguide, so as to realize the equal-amplitude output of the signal in a wide frequency band.

FIG. 3 shows the bottom of the broadband in-phase or anti-phase waveguide traveling-wave power divider 11 coupled with ridge waveguide probe type, including the bottom layer 111 and half of the middle layer 112 . The lengths of the output waveguides 241-244 of the power divider are inconsistent, and increase sequentially from 241 to 244. The length of the output waveguide of any stage is equal to the sum of the length of the input waveguide from the beginning of the stage to the coupling structure of the last stage and the length of the output waveguide of the last stage. For example, the length of 244 is equal to the length of the input waveguide from the center position of the coupling structure 34 of this stage to the center position of the coupling structure 31 of the last stage plus the length of the output waveguide 241 of the last stage. By properly extending the length of the input waveguide, the equal-phase output of the output waveguide can be guaranteed, so that the input signal of the amplifier unit of the power combining amplifier is in the same-amplitude and in-phase state in a wide frequency band, thereby realizing broadband waveguide traveling-wave power combining.

Except for the final stage, there are matching diaphragms 41-43 next to the ridge waveguide probes of each stage, which play a matching role, that is, they are matched when viewed at the waveguide input end, and the diaphragms also play a role in power distribution. The positions and heights of the matching diaphragms 41-43 are designed according to the susceptance and conductance values introduced by the probes. In general, the diaphragm height of the rear stage is greater, and the penultimate stage is the largest. There is no matching diaphragm 41-43 at the final stage, and a short circuit surface is used to offset the susceptance introduced by the probe to achieve matching.

There are many forms of matching transition structures from the ridge waveguide probe type coupling structure to the output waveguide. The matching transition structure 234 in this embodiment includes two parts, namely, a higher impedance ridge waveguide 51 and a rectangular waveguide 52 with reduced narrow sides. Among them, the ridge part of the central conductor of 52 is slightly larger than the probe part of the ridge waveguide, and the cavity size is consistent with the standard waveguide on the wide side, and slightly narrower on the narrow side. The rectangular waveguide 52 with reduced narrow sides is a reduced-height waveguide with reduced narrow sides.

The power divider structure 11 in FIG. 1 can be divided into three parts for processing, namely the bottom layer 111 , the middle layer 112 and the top layer 113 . The bottom layer and the top layer are a mirror image relationship. FIG. 4 shows a structural model of the bottom layer 111 . FIG. 5 shows a structural model of the middle layer 112 . They are all formed by digging various cavities out of a solid piece of metal.

The power amplifier module 12 can take various forms, as long as the required port relationship is satisfied. In this embodiment, a two-way spatial power combining structure is introduced. FIG. 6 shows a specific structural diagram of the power amplifier module 12 . The basic working process of the amplification module is to input signal power through a waveguide 51, then couple it into the microstrip through the planar probe 61, and then connect the amplifier 71, and finally the output power of the amplifier is coupled into the output waveguide through the microstrip probe. The microstrip probe 61 and the amplifier unit 71 in the amplifying module both exist on the bottom layer and the top layer, which is actually a two-way spatial power combining structure. In FIG. 6, the input waveguide and the output waveguide have a 90-degree bend, and the angle-cutting structure 52 is used in the figure to realize matching. All the amplifier chips in Figure 6 are welded to the bottom layer or the bottom metal cavity, which can achieve good heat dissipation. The top and bottom surfaces can be designed as sheet-like heat dissipation structures, which can be blackened to further improve heat dissipation, and fans can also be used for forced heat dissipation.

Embodiment two

As shown in Figure 7, the figure schematically shows a microstrip probe-type coupled in-phase output power divider structure. The only difference between this embodiment and the first embodiment is that this embodiment uses a microstrip probe type coupling structure to illustrate the basic idea of the present invention. The main difference between this structure and the ridge waveguide probe type coupling waveguide traveling wave power divider is that the form of the coupling structure is changed to a microstrip probe, correspondingly, a matching transition structure from the microstrip to the output waveguide is introduced. This structure still adjusts the output phase of the power splitter to be consistent by extending the output waveguide. The design principle of the microstrip probe is basically the same as that of the ridge waveguide probe structure. The matching transition structure from the microstrip to the output waveguide adopts the probe transition form. By inserting the microstrip probe 251 on the wide side of the waveguide 252, a short-circuit surface is set at a certain distance from the probe to realize the transition from the microstrip to the waveguide 252. The waveguide 252 forms an output waveguide through a 90-degree turn, and there is a matching chamfer 253 at the turn. Other structures are consistent with Embodiment 1.

Embodiment three

As shown in Fig. 8, the figure schematically shows a structure of a coaxial probe type coupled in-phase output power divider. The only difference between this embodiment and the first embodiment is that the coupling structure of the power divider is changed to a coaxial probe, and correspondingly, a matching transition structure from the coaxial to the output waveguide is introduced. This structure still adjusts the output phase of the power splitter to be consistent by extending the output waveguide. The design principle of the coaxial probe is basically the same as that of the ridge waveguide probe structure. The matching transition structure from the coaxial to the output waveguide adopts the probe transition form. By inserting the coaxial probe 261 on the wide side of the waveguide 262, a short-circuit surface is set at a certain distance from the probe to realize the transition from the coaxial to the waveguide 262. The waveguide 262 forms an output waveguide through a 90-degree turn, and there is a matching chamfer 263 at the turn. Other structures are consistent with Embodiment 1.

Embodiment four

As shown in FIG. 9 , the figure schematically shows the structure of a coaxial probe type coupled coaxial output power divider. The only difference between this embodiment and the first embodiment is that the coupling structure of the power divider is changed to a coaxial probe, and the output port is also in a coaxial form. This structure adjusts the output phase of the power divider to be consistent by extending the output coaxial line. Other structures are consistent with Embodiment 1.

The above-mentioned embodiment is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above-mentioned embodiment, and any other changes, modifications, substitutions, combinations, Simplifications should be equivalent replacement methods, and all are included in the protection scope of the present invention.

Claims (6)

1. a Wideband working waveguide traveling wave power synthesis amplifier, it is characterized in that: comprise two broadband homophases or rp-wave guided wave power distribution/synthesizer and at least one power amplifier module, one of them broadband homophase or rp-wave guided wave power distribution/synthesizer are as power divider, and another broadband homophase or rp-wave guided wave power distribution/synthesizer are as power combiner; Described broadband homophase or rp-wave guided wave power distribution/synthesizer comprise input waveguide, at least one grade coupled structure, more than one output waveguide, and the matching transition structure of butt coupling structure and output waveguide; Described matching transition structure, in order to realize the impedance matching between coupled structure and output waveguide, reaches the coupling output of maximum bandwidth; Every grade coupled structure arranges perpendicular to the row ripple direction of input waveguide, except the last grade coupled structure, every grade coupled structure place is provided with the matching diaphragm that forms reflex when preventing that waveguide electromagnetic field from propagating in every grade coupled structure, described matching diaphragm refers to inductive iris, and described matching diaphragm is between every grade coupled structure and next coupled structure; Described output waveguide is perpendicular to the direction setting of input waveguide, and the length of the output waveguide that described every grade coupled structure is connected is different, and the length of the output waveguide that first order coupled structure is corresponding is the longest, shortens successively; The length of every one-level output waveguide meets following condition: the length of arbitrary number of level output waveguide equals to start to the length sum of the input waveguide length the grade coupled structure of most end and most end one-level output waveguide from this grade;

Described power amplifier module is between described power divider and described power combiner, and the input port of each power amplifier connects respectively an output waveguide of power divider, and delivery outlet connects an input waveguide of power combiner; Described power combiner and power divider are rotation and docks placement form, by the input waveguide of the grade coupled structural correspondence of most end of output waveguide correspondence power combiner corresponding to the first order coupled structure of described power divider;

Described power divider comprises bottom, intermediate layer and top layer.

2. Wideband working waveguide traveling wave power synthesis amplifier according to claim 1, it is characterized in that: described every grade coupled structure comprises the coupling unit at least one road the position of described every grade coupled structure Mei road coupling unit this side broadside center line symmetry of distance on the broadside of the one or both sides of input waveguide.

3. Wideband working waveguide traveling wave power synthesis amplifier according to claim 1 and 2, it is characterized in that: described coupled structure is used for realizing the amplitude outputs such as wideband inband signaling, and coupled structure refers to the wherein a kind of of following type: microstrip probe type coupled structure, co-planar waveguide sonde-type coupled structure, coaxial probe type coupled structure and ridge waveguide sonde-type coupled structure.

4. Wideband working waveguide traveling wave power synthesis amplifier according to claim 3, it is characterized in that: described ridge waveguide sonde-type coupled structure comprise as the ridge waveguide of main body and by the conductor ridge of ridge waveguide projection extend and form, for being inserted into the probe structure of input waveguide, described ridge waveguide probe is all-wave guide structure.

5. Wideband working waveguide traveling wave power synthesis amplifier according to claim 1, is characterized in that: described matching transition structure refers to a kind of in following type: single-unit 1/4th impedance transformers, more piece 1/4th impedance transformers, Chebyshev's impedance transformer and gradual change transmission line.

6. Wideband working waveguide traveling wave power synthesis amplifier according to claim 1, is characterized in that: the capable wave power combining amplifier of described broadband waveguide is symmetrical about the horizontal cross-section of input and output waveguide direction of propagation center line.