CN110011645A - X-band cavity type pectination spectrum generator - Google Patents
X-band cavity type pectination spectrum generator Download PDFInfo
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- CN110011645A CN110011645A CN201910400844.8A CN201910400844A CN110011645A CN 110011645 A CN110011645 A CN 110011645A CN 201910400844 A CN201910400844 A CN 201910400844A CN 110011645 A CN110011645 A CN 110011645A
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- 238000001228 spectrum Methods 0.000 title claims abstract description 17
- 238000013461 design Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000003780 insertion Methods 0.000 abstract description 2
- 230000037431 insertion Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 235000013599 spices Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/84—Generating pulses having a predetermined statistical distribution of a parameter, e.g. random pulse generators
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Abstract
The present invention relates to a kind of X-band cavity type pectination spectrum generators, are made of fixed resonant rod, bandpass filter, load, waveguide resonant cavity；Fixed resonant rod is mounted on the intracavitary formation input matching component of the wave guide resonance, and a section snap-off diode is welded in fixed resonant rod end, and one end insertion wave guide resonance of the section snap-off diode is intracavitary.This programme realizes matching network and pulse generating circuit using fixed resonant rod and wave-guide cavity wave.The input of fixed resonant rod and waveguide resonant cavity composition matches Drive assembly, while ensuring port good impedance match, because of its higher Q value, has also ensured the output power of high-order harmonic wave；The structure of wave-guide cavity wave formula, it is more preferable than traditional circuit in terms of heat dissipation.It is welded on resonant rod using one section of snap-off diode will be saved, the other end is inserted into the intracorporal tactic pattern of chamber, reduces debugging difficulty to a certain extent, more preferable on reliability of technology.
Description
Technical field
The present invention relates to pectination spectrum generator fields, and in particular to a kind of X-band cavity type pectination spectrum generator.
Background technique
Comb spectrum generator is the device that a kind of one radiofrequency signal of input can generate abundant harmonic wave, it utilizes sufficiently large
Power push step-recovery diode (Step recovery diode, SRD, abbreviation step pipe) to generate multiple harmonic, can
To obtain the frequency source of X-band or more.Pectination spectrum generator is designed currently with step pipe, commonly uses adjustable coil design matching
Diode both ends are welded on microstrip circuit by network and pulse generating circuit, form micro-strip planar structure.But adjustable coil Q
It is worth lower, port match is poor, keeps its high-order harmonic wave output power not high；And that there are debugging difficulties is big, heat-sinking capability is poor, two poles
The problems such as more difficult is replaced after tube failure.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of X-band cavity type pectination spectrum generators, adopt
Matching network and pulse generating circuit are realized with fixed resonant rod and wave-guide cavity wave.Fixed resonant rod and waveguide resonant cavity
The input of composition matches Drive assembly, while ensuring port good impedance match, because of its higher Q value, has also ensured height
The output power of order harmonics；The structure of wave-guide cavity wave formula, it is more preferable than traditional circuit in terms of heat dissipation.Using two pole of step will be saved
One section of pipe is welded on resonant rod, and the other end is inserted into the intracorporal tactic pattern of chamber, reduces debugging difficulty, work to a certain extent
It is more preferable in skill reliability.
The purpose of the present invention is achieved through the following technical solutions:
A kind of X-band cavity type pectination spectrum generator, by fixed resonant rod, bandpass filter, load, waveguide resonant cavity
Composition；
The fixed resonant rod is mounted on the intracavitary formation input matching component of the wave guide resonance, the fixed resonance
A section snap-off diode is welded in bar end, and one end insertion wave guide resonance of the section snap-off diode is intracavitary；
The bandpass filter, load are separately fixed at the waveguide resonant cavity front and rear sides.
As a further improvement of the present invention, the section snap-off diode parameter selection are as follows: snap time tst: tst≤1/
f0；A small amount of τ: τ >=1/2 π f of service lifei；Reversed junction capacity Cj: Cj=l/2 π f0xN, wherein xNFor impedance level, it is specified that 10 Ω < xN<20
Ω。
Further, the fixed resonant rod integrated design has the first inductance and the second inductance, first inductance, the
Two inductance, snap-off diode are sequentially connected in series.It is designed by stepped construction, realizes two groups of different inductances.The resonant rod is logical
Unitary design is crossed, two groups of inductance are connected with snap-off diode, reduces loss brought by discrete device welding.
Further, first inductance is " S " type reciprocating structure, is designed by S type reciprocating structure, with isometric
In the case where degree, the spread length of signal is increased, while ensure that the inductance of this group of inductance.It is effective to increase conductor
Surface area, to overcome the influence of high-frequency signal skin effect so that Q value it is higher than the inductance of same cross-sectional area by 30%~
40%.
Further, the fixed resonant rod electroplate processing, the resonant rod integrally use electroplate to handle, energy
Enough increase the electrical conductivity of conductor, i.e. reduction inductance D.C. resistance, so that the resonant rod has more conventional adjustable coil high
50%~60% Q value.
The beneficial effects of the present invention are:
1, the input of fixed resonant rod and waveguide resonant cavity composition matches Drive assembly, on the one hand utilizes resonant rod and chamber
Cooperate between body, form matching network, so that ensuring port good impedance match, on the other hand utilizes higher Q value, ensured height
The output power of order harmonics；
2, the structure of wave-guide cavity wave formula has bigger thermal conductive surface compared with conventional planar structure, so the ratio in terms of heat dissipation
Conventional planar structural circuit is more preferable.
3, use will save one section of snap-off diode and be welded on resonant rod, and the other end is inserted into the intracorporal tactic pattern of chamber,
Reduce debugging difficulty to a certain extent, it is more preferable on reliability of technology.
Detailed description of the invention
Fig. 1 is side view of the present invention；
Fig. 2 is main view of the present invention；
Fig. 3 is top view of the present invention；
Fig. 4 is waveguide resonant cavity structural schematic diagram；
Fig. 5 is the structural schematic diagram of fixed resonant rod；
Fig. 6 is the sectional view of bandpass filter；
Fig. 7 is emulation testing figure of the present invention；
Fig. 8 is bandpass filter analogous diagram of the present invention；
Fig. 9 is the equivalent circuit diagram of the fixed resonant rod of the present invention；
Figure 10 is present invention section snap-off diode Spice illustraton of model；
Figure 11 is equivalent circuit of the present invention.
Specific embodiment
Technical solution of the present invention is described in further detail combined with specific embodiments below, but protection scope of the present invention is not
It is confined to as described below.
As shown in Figure 1-3, a kind of X-band cavity type pectination spectrum generator, which is characterized in that by fixed resonant rod 1, band
Bandpass filter 2, load 3, waveguide resonant cavity 4 form；Fixed resonant rod 1, which is mounted in waveguide resonant cavity 4, forms input matching
A section snap-off diode 21 is welded in component, 1 end of fixed pattern resonant rod, and waveguide resonant cavity 4 is inserted into one end of section snap-off diode 21
It is interior；Bandpass filter 2, load 3 are separately fixed at 4 front and rear sides of waveguide resonant cavity.
Input matching Drive assembly is formed by fixed resonant rod 1 and waveguide resonant cavity 4.
Wherein the equivalent circuit of fixed resonant rod 1 is as shown in figure 9, in figure
Rg=50 Ω, Rin=ωiL=2 π finL, fin are input frequency, and L is excitation inductance.
By the calculating of parameter above-mentioned parameter, structure actually uses material, obtains fixed 1 outline drawing of resonant rod such as Fig. 5
It is shown.
The fixed integrated design of resonant rod 1 has the first inductance 22 and the second inductance 23, first inductance 22, the second inductance
23, snap-off diode 21 is sequentially connected in series.First inductance 22 and the second inductance 23 are distributed in stepped construction, i.e., both one on the other
Interval setting forms two-stage staged.Wherein, the first inductance 22 is " S " type reciprocating structure, fixed 1 electroplate of resonant rod
Processing.
Waveguide resonant cavity 4 provides excitation inductance and tuning capacitance for snap-off diode
In formula: ξ is decay factor, generally takes 0.3, t to simplify the calculationPFor desired pulse width.
Save 21 parameter selection of snap-off diode are as follows: snap time tst: tst≤1/f0；A small amount of τ: τ >=1/2 π f of service lifei；Reversely
Junction capacity Cj: Cj=l/2 π f0xN, wherein xNFor impedance level, it is specified that 10 Ω < xN<20Ω；
In addition, there are also input powers etc. for the parameter of snap-off diode.Due to the small-power frequency multiplier as local oscillator,
General snap-off diode can be met the requirements, therefore not considered here.By the calculating of parameter above-mentioned parameter,
Final choice MA-COM company provide SRD device MMD820-C12, reversed junction capacity be 1.7P, snap time 95ps,
A small amount of service life is 60ns, meets design parameter requirement, Spice model is as shown in Figure 10.
As shown in fig. 6, the intracorporal groove of bandpass filter transit chamber, forms resonance circuit, selects frequency band, to it
Equivalent circuit is emulated, and is obtained simulation result and is such as seen Fig. 8
Input signal passes through external bias circuit, is transferred to the input being made of fixed resonant rod and waveguide resonant cavity
With Drive assembly, matches Drive assembly and be on the one hand to realize conjugate impedance match with input signal source internal resistance impedance, guarantee input
Voltage is effectively added on step pipe.On the other hand play the role of motivating inductance and tuning capacitance, so that step pipe is being connected
When storage energy, and converting energy into pulse energy by moment, and the impedance of diode input terminal is made to be pure resistance
Property impedance.The energy conversion of input signal is one under signal source and the collective effect of matching Drive assembly by snap-off diode
A narrow significantly pulse with abundant harmonic wave, schematic diagram refer to Figure 11, using spectrum measurement instrument to the present embodiment into
Row test, obtains test parameter as shown in fig. 7, its data see the table below.
The above is only a preferred embodiment of the present invention, it should be understood that the present invention is not limited to described herein
Form should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and can be at this
In the text contemplated scope, modifications can be made through the above teachings or related fields of technology or knowledge.And those skilled in the art institute into
Capable modifications and changes do not depart from the spirit and scope of the present invention, then all should be in the protection scope of appended claims of the present invention
It is interior.
Claims (6)
1. a kind of X-band cavity type pectination spectrum generator, which is characterized in that by fixed resonant rod (1), bandpass filter (2),
Load (3), waveguide resonant cavity (4) composition；
The fixed resonant rod (1), which is mounted in the waveguide resonant cavity (4), forms input matching component, described fixed humorous
Shake one section snap-off diode (21) of bar (1) end welding, and waveguide resonant cavity (4) are inserted into one end of the section snap-off diode (21)
It is interior；
The bandpass filter (2), load (3) are separately fixed at the waveguide resonant cavity (4) front and rear sides.
2. X-band cavity type pectination spectrum generator according to claim 1, which is characterized in that the section snap-off diode
(21) parameter selection are as follows: snap time tst: tst≤1/f0；A small amount of τ: τ >=1/2 π f of service lifei；Reversed junction capacity Cj: Cj=l/2π
f0xN, wherein xNFor impedance level, it is specified that 10 Ω < xN<20Ω。
3. X-band cavity type pectination spectrum generator according to claim 2, which is characterized in that the fixed resonant rod
(1) integrated design has the first inductance (22) and the second inductance (23), first inductance (22), the second inductance (23), step two
Pole pipe (21) is sequentially connected in series.
4. X-band cavity type pectination spectrum generator according to claim 3, which is characterized in that first inductance (22)
It is distributed with the second inductance (23) in stepped construction.
5. X-band cavity type pectination spectrum generator according to claim 4, which is characterized in that first inductance (22)
For " S " type reciprocating structure.
6. X-band cavity type pectination spectrum generator according to claim 1, which is characterized in that the fixed resonant rod
(1) electroplate is handled.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910400844.8A CN110011645B (en) | 2019-05-15 | 2019-05-15 | X-band cavity type comb spectrum generator |
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|---|---|---|---|
| CN201910400844.8A CN110011645B (en) | 2019-05-15 | 2019-05-15 | X-band cavity type comb spectrum generator |
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| CN110011645B CN110011645B (en) | 2024-02-20 |
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|---|---|---|---|---|
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| US4636758A (en) * | 1984-01-27 | 1987-01-13 | Alcatel Thomson Faisceaux Herziens | Frequency multiplier for millimeter waves having means for adjusting harmonic frequency |
| CN101694917A (en) * | 2009-09-23 | 2010-04-14 | 中国科学院武汉物理与数学研究所 | Mini microwave cavity |
| CN102236089A (en) * | 2010-04-28 | 2011-11-09 | 中国科学院电子学研究所 | Transceiving system of synthetic aperture radar with super-high resolution |
| CN103929132A (en) * | 2014-04-24 | 2014-07-16 | 成都锦江电子系统工程有限公司 | Small high-power microwave amplification module based on strip line mode |
| US20150303895A1 (en) * | 2012-10-19 | 2015-10-22 | Centre National De La Recherche Scientifique (C.N.R.S.) | Transducer with bulk waves surface-guided by synchronous excitation structures |
| US20160213303A1 (en) * | 2015-01-22 | 2016-07-28 | Elwha LLC, a limited liability company of the State of Delaware | Devices and methods for remote hydration measurement |
| US20170051884A1 (en) * | 2015-08-19 | 2017-02-23 | Soraa Laser Diode, Inc. | Integrated light source using a laser diode |
| CN107359861A (en) * | 2017-06-01 | 2017-11-17 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | High-order odd harmonic THz sources frequency multiplier |
| CN209897020U (en) * | 2019-05-15 | 2020-01-03 | 成都锦江电子系统工程有限公司 | X-waveband cavity type comb spectrum generator |
-
2019
- 2019-05-15 CN CN201910400844.8A patent/CN110011645B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1276273A (en) * | 1959-12-17 | 1961-11-17 | Western Electric Co | Hyper-frequency pulse amplifiers |
| GB1194662A (en) * | 1968-01-27 | 1970-06-10 | Telefunken Patentverwertunsges | Improvements in or relating to Tunable Single Stage Semi-Conductor Frequency Multipliers |
| US4636758A (en) * | 1984-01-27 | 1987-01-13 | Alcatel Thomson Faisceaux Herziens | Frequency multiplier for millimeter waves having means for adjusting harmonic frequency |
| CN101694917A (en) * | 2009-09-23 | 2010-04-14 | 中国科学院武汉物理与数学研究所 | Mini microwave cavity |
| CN102236089A (en) * | 2010-04-28 | 2011-11-09 | 中国科学院电子学研究所 | Transceiving system of synthetic aperture radar with super-high resolution |
| US20150303895A1 (en) * | 2012-10-19 | 2015-10-22 | Centre National De La Recherche Scientifique (C.N.R.S.) | Transducer with bulk waves surface-guided by synchronous excitation structures |
| CN103929132A (en) * | 2014-04-24 | 2014-07-16 | 成都锦江电子系统工程有限公司 | Small high-power microwave amplification module based on strip line mode |
| US20160213303A1 (en) * | 2015-01-22 | 2016-07-28 | Elwha LLC, a limited liability company of the State of Delaware | Devices and methods for remote hydration measurement |
| US20170051884A1 (en) * | 2015-08-19 | 2017-02-23 | Soraa Laser Diode, Inc. | Integrated light source using a laser diode |
| CN107359861A (en) * | 2017-06-01 | 2017-11-17 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | High-order odd harmonic THz sources frequency multiplier |
| CN209897020U (en) * | 2019-05-15 | 2020-01-03 | 成都锦江电子系统工程有限公司 | X-waveband cavity type comb spectrum generator |
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| CN110011645B (en) | 2024-02-20 |
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