CN102324363A - Ridge-loaded zigzag rectangular groove waveguide slow wave line - Google Patents
Ridge-loaded zigzag rectangular groove waveguide slow wave line Download PDFInfo
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- CN102324363A CN102324363A CN201110229694A CN201110229694A CN102324363A CN 102324363 A CN102324363 A CN 102324363A CN 201110229694 A CN201110229694 A CN 201110229694A CN 201110229694 A CN201110229694 A CN 201110229694A CN 102324363 A CN102324363 A CN 102324363A
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Abstract
The invention discloses a ridge-loaded zigzag rectangular groove waveguide slow wave line, which belongs to the field of microwave vacuum electronic devices. The slow wave line comprises two metal plates which are mutually parallel; an upper metal plate and a lower metal plate are supported by side walls and are fixed together; the two metal plates are both provided with zigzag grooves; the zigzag grooves are formed by alternately connecting bent groove parts and straight groove parts end to end; the shapes of the cross sections of the bent groove parts are the same as the shape of the semi-cross section of a rectangular waveguide; the shapes of the cross sections of the straight groove parts are the same as the shape of the semi-cross section of a rectangular single-ridge waveguide or a rectangular double-ridge waveguide; and further, the zigzag grooves of the upper metal plate and the lower metal plate are in mirror symmetry with respect to a central plane between the upper metal plate and the lower metal plate. The slow wave line not only has the superiority of the zigzag groove waveguide slow wave line, but also has the advantages of a ridge waveguide, is the slow wave line with bigger power capability and wider working bandwidth, and compared with a conventional zigzag groove waveguide slow wave line, has the wider working bandwidth and higher coupled impedance under the same size, thereby being more beneficial to the increment of the bandwidth of a traveling wave tube and the improvement of gain and efficiency.
Description
Technical field
The invention belongs to the microwave vacuum technical field of electronic devices, be specifically related to notes-Bo mutual effect device---the slow wave line of travelling wave tube.
Background technology
Travelling wave tube is vacuum electron device of paramount importance one type of device in microwave frequency band is used, and its ratio accounts for about half of whole electron tube.Slow wave structure is annotated-core component of ripple mutual effect excitation microwave energy as travelling wave tube, the good and bad technical merit that directly determines travelling wave tube of its performance.Helix of using at present and distortion thereof (like ring bar, toroidal ring structure etc.) and coupling cavity have all run into serious obstacle in development separately.Helix has weak dispersion characteristics, and bandwidth can reach several octaves, but its thermal capacity is little, and heat-sinking capability is low and bigger power output can't be provided; Coupling cavity is a kind of All metal slow wave structure, and its heat-sinking capability is very strong, the high magnitude of the comparable helix of output power levels, but narrow bandwidth.Along with the raising of operating frequency, the two intrinsic defective has increased the limit that its difficulty that further develops, particularly helix have reached its thermal capacity.Therefore, seek to have broadband simultaneously, high efficiency, powerful novel slow wave structure become the key issue that presses for solution most that the travelling wave tube technology advances to high band more.
The characteristics of millimeter wave traveling wave tube are little, the processing difficulties of size, and the electromagnetic transmission loss is big, and interaction efficiency is low, and electronics is annotated and formed difficulty etc.Along with the further rising of frequency, the further reduction of device size, above-mentioned physical problem has more seriously limited travelling wave tube short millimeter effective work that involves above wave band.
Tortuous rectangular waveguide slow wave circuit is that rectangular waveguide is periodically bent to perpendicular type meander line or the formed a kind of all-metal slow wave system of U type meander line along waveguide E face; It has characteristics such as easy processing simple in structure, heat-sinking capability is good, input and output are prone to coupling, dispersion characteristics are smooth, the broadband is high-power, is widely used in the millimeter wave traveling wave tube.But along with travelling wave tube develops to higher frequency, the ohmic loss of metallic walls is with increasing, because the loss of wall not only can consume part energy, reduces homogeneous tube efficient, increases the pressure of heat radiation, also can bring extra noise.When frequency reaches submillimeter wave when above, it is more and more outstanding that these problems will become, so that greatly restricting the performance of tortuous rectangular waveguide travelling wave tube.
The rectangular channel waveguide; Can regard as by rectangular waveguide and cut open along broadside (E face) the center plane of symmetry; Respectively get its half lead the groove on the upper and lower metallic plate as slot wave shape on upper and lower metallic plate, slotting respectively, and upper and lower metallic plate kept at a certain distance away and form.It is a kind of novel millimeter wave submillimeter wave transmission line that slot wave is led, than rectangular waveguide, its physical dimension is big, the bandwidth of single mode operation the most important thing is, it is a kind of semi-open structure that slot wave is led, especially easily processing; Its wall loss ratio rectangular waveguide is much lower, and loss factor also can reduce along with the rising of frequency.The curved channel waveguide that this slow wave line is formed along the direction bending back and forth (its mode can be right angle bending and circular arc bending equally) of groove is as the TWT slow wave line; The electronics that not only has nature to form is annotated passage; And allow the ribbon-like electron notes to pass through, as shown in Figure 1.Annotate thickness in ribbon-like electron and annotate under the identical situation of diameter with the cylindrical electronics that in tortuous rectangular waveguide, uses usually, the former can increase power output because the increase of width makes that electric current can be much bigger.Become a kind of new type slow wave structure that is suitable for millimeter wave, submillimeter travelling wave tube so curved channel waveguide is very potential.Chinese patent: curved channel waveguide slow-wave line (application number: 200920082778.6) its superiority has been done more comprehensively description.
With rectangular channel waveguide crossheading vertically carry out periodicity bending back and forth, just form tortuous rectangle channel waveguide slow-wave line, as shown in Figure 1, it has the above-mentioned advantage that slot wave is led equally; Because the notes-Bo mutual effect passage of tortuous rectangle channel waveguide slow-wave line is processed to meander-shaped, make same performance require following slow wave line overall volume to dwindle greatly simultaneously.
Even if comparing normal rectangular waveguide slow wave line, tortuous rectangular waveguide slow wave line or even rectangle channel waveguide slow-wave line, tortuous rectangle channel waveguide slow-wave line all has advantage; But further improve in signal frequency; Especially after getting into submillimeter wave or even terahertz wave band, tortuous rectangle channel waveguide slow-wave line still faces the limit challenge of aspects such as device size, machining accuracy.Simultaneously, because the first-harmonic of curved channel waveguide slow wave system equally belongs to the back ripple with winding waveguide, then need be operated in negative primary space harmonic wave if curved channel waveguide is used for travelling wave tube, so coupling impedance is relatively low.Coupling impedance is as characterizing the strong and weak parameter of slow wave system and beam coupling, and is directly related with efficient with the gain of travelling wave tube.Therefore, under existing tortuous rectangle channel waveguide slow-wave line device size condition, how further to improve the bandwidth of operation of travelling wave tube, how further to improve the gain and the efficient of travelling wave tube, becoming has technical problem to be solved.
Summary of the invention
The present invention provides a kind of ridge to load tortuous rectangle channel waveguide slow-wave line; Under identical size condition, compare existing curved channel waveguide slow-wave line and have wideer bandwidth of operation, higher coupling impedance, thereby more help the raising of increase, gain and the efficient of travelling wave tube bandwidth.
Technical scheme of the present invention is following:
A kind of ridge loads tortuous rectangle channel waveguide slow-wave line, and is as shown in Figure 2, comprises the last metallic plate 1 and following metallic plate 2 that are parallel to each other, is fixed together through the supporting walls 6 that is positioned at the long limit of upper and lower metallic plate marginal position between the upper and lower metallic plate.All have tortuous groove 3 on said two metallic plates, said tortuous groove 3 alternately is formed by connecting from beginning to end set of flex slot part 4 and straight trough part 5, and the tortuous groove of upper and lower metallic plate is the minute surface symmetry with respect to the central plane between the upper and lower metallic plate; The cross sectional shape of the curved slot part 4 of said tortuous groove 3 is identical with half section shape (respectively like Fig. 3) after the cross section of rectangular waveguide is cut open along waveguide broadside (E face) center line, and the cross sectional shape of the straight trough part 5 of said tortuous groove 3 is identical with half section shape (as shown in Figure 4) after the cross section of rectangle single ridged waveguides or rectangle double ridged waveguide is cut open along waveguide broadside (E face) center line.
In the technique scheme, the curved slot part 4 of said tortuous groove 3 can be U-shaped curved slot or quarter bend crank slot; Said sidewall 7 materials are metal material, insulating material or microwave absorbing material.
Ridge provided by the invention loads tortuous rectangle channel waveguide slow-wave line; Because leading, slot wave itself has between upper and lower metallic plate 3 and 4 at interval; The electronics that forms nature is annotated passage, so ridge loads tortuous rectangle channel waveguide slow-wave line and need not to process specially electronics again and annotate passage.
The rectangular ridge waveguide have than normal rectangular waveguide wide the operating frequency range of Duoing.The operating frequency range of common standard rectangular waveguide has only 1.5: 1 (ratio of maximum operating frequency and lowest operating frequency); And the rectangular ridge waveguide; No matter be rectangle single ridged waveguides or rectangle double ridged waveguide, operating frequency range can reach 3.6: 1, is more than a times of normal rectangular waveguide.On the other hand, because the existence of ridge waveguide median ridge makes the basic mode electric field in the waveguide obtain compression in the ridge position; Electric field is more concentrated; Electric field strength is strengthened greatly, therefore, passes through in the center of ridge if let electronics annotate; Electronics is annotated and a more strong interaction is taken place, this just means and has improved coupling impedance.Therefore; The present invention adds the ridge rectangle with the cross sectional shape of curved slot part in the tortuous groove of tortuous rectangular channel waveguide by rectangle instead, and the bandwidth of operation of slow wave line is further widened, and coupling impedance is significantly improved; Thereby more help the increase of travelling wave tube bandwidth, the raising of gain and efficient.
Ridge provided by the invention loads tortuous rectangle channel waveguide slow-wave line, is equivalent to load rectangle list ridge or two ridge (among Fig. 2 shown in the mark 7) in the straight trough part of the tortuous rectangular channel of existing tortuous rectangle channel waveguide slow-wave line along waveguide broadside (E face) and forms (and the curved slot of tortuous rectangular channel part does not add ridge).Owing to load the existence of ridge; Make the present invention both have the superiority of curved channel waveguide slow-wave line, have the advantage of ridge waveguide again, therefore; Be that a kind of power capacity is bigger; The novel slow wave line that bandwidth of operation is wideer is compared existing curved channel waveguide slow-wave line and is had wideer bandwidth of operation, higher coupling impedance under identical size condition, thereby more helps the raising of increase, gain and the efficient of travelling wave tube bandwidth.The present invention can overcome the contradiction between travelling wave tube power and the bandwidth to a certain extent, is particularly suitable in higher frequency wave band (submillimeter region or even terahertz wave band) travelling wave tube, using.
Description of drawings
Fig. 1 is tortuous rectangle channel waveguide slow-wave line structural representation.
Fig. 2 is that ridge provided by the invention loads tortuous rectangle channel waveguide slow-wave line structural representation.
Fig. 3 is the rectangular waveguide schematic cross-section.
Fig. 4 is a rectangle double ridged waveguide schematic cross-section.
Fig. 5 is that the ridge of actual processing loads a metal plate structure sketch map in the tortuous rectangle channel waveguide slow-wave line, and another metallic plate and it is symmetry fully.
Fig. 6 ridge provided by the invention loads the coupling impedance comparison diagram of tortuous rectangle channel waveguide slow-wave line and common curved channel waveguide slow-wave line.
Among Fig. 1 to Fig. 6, the 1st, last metallic plate, the 2nd, following metallic plate, the 3rd, tortuous groove, the 4th, the curved slot part of tortuous groove, the 5th, the straight trough part of tortuous groove, the 6th, sidewall, the 7th, the loading ridge of straight trough part; On behalf of ridge provided by the invention, curve 8 load the coupling impedance of tortuous rectangle channel waveguide slow-wave line and the coupling impedance of common curved channel waveguide slow-wave line respectively with curve 9.
Embodiment
A kind of ridge loads tortuous rectangle channel waveguide slow-wave line, and is as shown in Figure 2, comprises the last metallic plate 1 and following metallic plate 2 that are parallel to each other, is fixed together through the supporting walls 6 that is positioned at the long limit of upper and lower metallic plate marginal position between the upper and lower metallic plate.All have tortuous groove 3 on said two metallic plates, said tortuous groove 3 alternately is formed by connecting from beginning to end set of flex slot part 4 and straight trough part 5, and the tortuous groove of upper and lower metallic plate is the minute surface symmetry with respect to the central plane between the upper and lower metallic plate; The cross sectional shape of the curved slot part 4 of said tortuous groove 3 is identical with half section shape (respectively like Fig. 3) after the cross section of rectangular waveguide is cut open along waveguide broadside (E face) center line, and the cross sectional shape of the straight trough part 5 of said tortuous groove 3 is identical with half section shape (as shown in Figure 4) after the cross section of rectangle single ridged waveguides or rectangle double ridged waveguide is cut open along waveguide broadside (E face) center line.
In the technique scheme, the curved slot part 4 of said tortuous groove 3 can be U-shaped curved slot or quarter bend crank slot; Said sidewall 7 materials are metal material, insulating material or microwave absorbing material.
The ridge that Fig. 5 has provided actual processing loads the structural representation of the following metallic plate 2 in the tortuous rectangle channel waveguide slow-wave line, and last metallic plate 1 is symmetry fully with it.Two metallic plates in opposite directions altogether and add upper side wall 6 and load tortuous rectangle channel waveguide slow-wave line with regard to constituting complete ridge.Actually add man-hour, groove digs out on the certain thickness metallic plate having, so good integrity, and heat radiation is strong, and enough intensity is arranged again.Support and fix the sidewall 6 employing beryllium oxide ceramics or the beryllium oxide attenuation ceramics of upper and lower metallic plate, weld together with upper and lower metallic plate.
Claims (4)
1. a ridge loads tortuous rectangle channel waveguide slow-wave line, comprises the last metallic plate (1) and the following metallic plate (2) that are parallel to each other, is fixed together through the supporting walls (6) that is positioned at the long limit of upper and lower metallic plate marginal position between the upper and lower metallic plate; It is characterized in that; All has tortuous groove (3) on said two metallic plates; Said tortuous groove (3) alternately is formed by connecting from beginning to end set of flex slot part (4) and straight trough part (5), and the tortuous groove of upper and lower metallic plate is the minute surface symmetry with respect to the central plane between the upper and lower metallic plate; The cross sectional shape of the curved slot of said tortuous groove (3) part (4) is identical with half section shape after the cross section of rectangular waveguide is cut open along waveguide broadside center line, and the straight trough of said tortuous groove (3) the partly cross sectional shape of (5) is identical with half section shape after the cross section of rectangle single ridged waveguides or rectangle double ridged waveguide is cut open along waveguide broadside center line.
2. ridge according to claim 1 loads tortuous rectangle channel waveguide slow-wave line, it is characterized in that, the curved slot of said tortuous groove partly is the U-shaped curved slot.
3. ridge according to claim 1 loads tortuous rectangle channel waveguide slow-wave line, it is characterized in that, the curved slot of said tortuous groove partly is the quarter bend crank slot.
4. load tortuous rectangle channel waveguide slow-wave line according to claim 1,2 or 3 described ridges, it is characterized in that, said sidewall (6) material is metal material, insulating material or microwave absorbing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110229694A CN102324363A (en) | 2011-08-11 | 2011-08-11 | Ridge-loaded zigzag rectangular groove waveguide slow wave line |
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| CN201110229694A CN102324363A (en) | 2011-08-11 | 2011-08-11 | Ridge-loaded zigzag rectangular groove waveguide slow wave line |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098509A (en) * | 2016-08-29 | 2016-11-09 | 成都赛纳为特科技有限公司 | A kind of twisted waveguide combination type directrix plane ridge waveguide folded waveguide |
| CN106158560A (en) * | 2016-08-29 | 2016-11-23 | 成都赛纳为特科技有限公司 | A kind of twisted waveguide separate type directrix plane rectangular waveguide folded waveguide |
| CN109308983A (en) * | 2017-07-27 | 2019-02-05 | 塔莱斯公司 | Slow wave for travelling-wave tubes is led |
| CN111788653A (en) * | 2018-03-07 | 2020-10-16 | Nec网络传感器系统株式会社 | Slow wave circuit, traveling wave tube, and method for manufacturing traveling wave tube |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572205A (en) * | 2009-06-10 | 2009-11-04 | 电子科技大学 | Zigzag slow-wave line of double ridged waveguide |
| CN101651074A (en) * | 2009-07-22 | 2010-02-17 | 电子科技大学 | Ridge loading zigzag waveguide slow wave line |
| CN201540945U (en) * | 2009-07-22 | 2010-08-04 | 电子科技大学 | Serpentine groove guide slow-wave line |
| CN202150438U (en) * | 2011-08-11 | 2012-02-22 | 电子科技大学 | Ridge loading curved rectangular groove waveguide slow wave line |
-
2011
- 2011-08-11 CN CN201110229694A patent/CN102324363A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572205A (en) * | 2009-06-10 | 2009-11-04 | 电子科技大学 | Zigzag slow-wave line of double ridged waveguide |
| CN101651074A (en) * | 2009-07-22 | 2010-02-17 | 电子科技大学 | Ridge loading zigzag waveguide slow wave line |
| CN201540945U (en) * | 2009-07-22 | 2010-08-04 | 电子科技大学 | Serpentine groove guide slow-wave line |
| CN202150438U (en) * | 2011-08-11 | 2012-02-22 | 电子科技大学 | Ridge loading curved rectangular groove waveguide slow wave line |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098509A (en) * | 2016-08-29 | 2016-11-09 | 成都赛纳为特科技有限公司 | A kind of twisted waveguide combination type directrix plane ridge waveguide folded waveguide |
| CN106158560A (en) * | 2016-08-29 | 2016-11-23 | 成都赛纳为特科技有限公司 | A kind of twisted waveguide separate type directrix plane rectangular waveguide folded waveguide |
| CN106098509B (en) * | 2016-08-29 | 2017-10-24 | 成都赛纳为特科技有限公司 | A kind of twisted waveguide combination type directrix plane ridge waveguide folded waveguide |
| CN106158560B (en) * | 2016-08-29 | 2018-03-20 | 成都赛纳为特科技有限公司 | A kind of twisted waveguide separate type directrix plane rectangular waveguide folded waveguide |
| CN109308983A (en) * | 2017-07-27 | 2019-02-05 | 塔莱斯公司 | Slow wave for travelling-wave tubes is led |
| CN109308983B (en) * | 2017-07-27 | 2022-12-02 | 塔莱斯公司 | Slow waveguide for traveling wave tube |
| CN111788653A (en) * | 2018-03-07 | 2020-10-16 | Nec网络传感器系统株式会社 | Slow wave circuit, traveling wave tube, and method for manufacturing traveling wave tube |
| CN111788653B (en) * | 2018-03-07 | 2023-04-28 | Nec网络传感器系统株式会社 | Slow wave circuit, traveling wave tube and manufacturing method of traveling wave tube |
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Application publication date: 20120118 |