CN104836004A - Electric-control adjustable waveguide port load impedance matching device loaded by varactor - Google Patents
Electric-control adjustable waveguide port load impedance matching device loaded by varactor Download PDFInfo
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- CN104836004A CN104836004A CN201510288123.4A CN201510288123A CN104836004A CN 104836004 A CN104836004 A CN 104836004A CN 201510288123 A CN201510288123 A CN 201510288123A CN 104836004 A CN104836004 A CN 104836004A
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Abstract
An electric-control adjustable waveguide port load impedance matching device loaded by a varactor relates to waveguide port impedance matching devices. The impedance matching device is provided with a front metal structure layer, a first dielectric layer, an all-metal reflection short circuit layer, a second dielectric layer and a back feedback line layer from top to bottom, the front metal structure layer is provided with upper and lower square metal ring sets, each metal ring is provided with openings that are symmetrically arranged in the centers of left and right sides, the two ends of each opening are connected with the varactor, a blocking resistor is arranged between the top ends of the adjacent metal rings, and a blocking resistor is arranged between the bottom ends of the adjacent metal rings; the left upper corners of the leftmost lower square metal rings of the upper and lower square metal ring sets are provided with upper left feedback lead holes respectively; the right lower corners of the rightmost lower square metal rings of the upper and lower square metal ring sets are provided with upper right feedback lead holes respectively; the back feedback line layer is provided with a lower left feed lead hole and a stabilized power supply anode feeder line; the back feed line layer is provided with a lower right feed lead hole and a stabilized power supply cathode feeder line; and the middle portions of the stabilized power supply anode and cathode feeder lines are disconnected and connected via a resistor.
Description
Technical field
The present invention relates to waveguide mouth impedance matching box, especially relate to the automatically controlled adjustable waveguide mouth load impedance adaptation that a kind of variable capacitance diode loads.
Background technology
In wave guide transformer research field, though the research of current single ended load coupling has a lot of high-lighting to be in progress, our all demands can not be met completely, or do not reach the application demand of people by more succinct form.
Generally, when microwave transmission line is connected with load, all require that load is coupling, such load could can not cause reflection, is traveling-wave mode in transmission line.The matched load that we require, in special frequency channel, can obtain maximum power from microwave source; Transmission line is in traveling-wave mode, avoids the loss that reflected wave produces in transmission line, and efficiency of transmission can be made to reach the highest; Do not produce standing wave in transmission line, thus there will not be puncturing of causing because of antinode, thus limit through-put power; But the waveguide mouth impedance matching box of a desirable full single mode transport wave band load matched is more difficult to be done, and range of application also has certain limitation, such as, when only needing a certain band frequency electromagnetic wave of coupling absorption in Wave guide system, existing impedance matching box is just difficult to reach requirement.
Traditional microwave waveguide load impedance adaptation is all embedded into waveguide inside substantially, the existence of these adaptations makes the range of application of waveguide greatly reduce, service efficiency reduces greatly, as: power match device, absorption water load, radiative water load etc., all change the internal structure of transmission line or waveguide, not only increase manufacturing cost, and limit its popularity on microwave engineering application.Also having a lot of inconvenience when allocating load with diaphragm or pin, is on the one hand that the characteristic impedance of load itself might not be known, and then only has when mating repeatedly to test with the diaphragm of different size size or pin and just can reach coupling.
Summary of the invention
The automatically controlled adjustable waveguide mouth load impedance adaptation that the object of the present invention is to provide a kind of variable capacitance diode to load.
The present invention is five-layer structure, is followed successively by front metallic structure layer, first medium layer, all-metal reflection shorting layer, second dielectric layer, back side feeder line layer from top to bottom;
Described front metallic structure layer is provided with square becket group and lower square becket group, the opposite side center, left and right of each square becket and each lower square becket is equipped with opening, variable capacitance diode is connected, between the top of adjacent square becket and between bottom, between the top of adjacent lower square becket and be equipped with every straight resistance between bottom between the two ends of opening;
On the Far Left of shape becket group up, under the left upper of square becket and the Far Left of lower square becket group, the left upper of square becket is respectively equipped with upper left supply lead hole, and on the rightmost of shape becket group up, under the lower right corner place of square becket and the rightmost of lower square becket group, the lower right corner place of square becket is respectively equipped with upper right supply lead hole;
Feeder line layer is provided with bottom left supply lead hole and positive pole of stabilized voltage supply feed line overleaf, bottom left supply lead hole is docked with upper left supply lead hole, bottom left supply lead hole is connected with one end of positive pole of stabilized voltage supply feed line, another termination positive pole of stabilized voltage supply of positive pole of stabilized voltage supply feed line;
Feeder line layer is provided with bottom right supply lead hole and stabilized voltage power supply negative feeder overleaf, bottom right supply lead hole is docked with upper right supply lead hole, bottom right supply lead hole is connected with one end of stabilized voltage power supply negative feeder, another termination stabilized voltage power supply negative pole of stabilized voltage power supply negative feeder;
The middle part of positive pole of stabilized voltage supply feed line disconnects and connects with left isolated resistance, and the middle part of stabilized voltage power supply negative feeder disconnects and connects with right isolated resistance.
Described dielectric layer can adopt FR4 dielectric layer, and described variable capacitance diode can adopt SMV1231-079 variable capacitance diode.
The present invention is based on WR187 type waveguide modes, the present invention determines the size of adaptation Facad structure under waveguide single mode transport frequency range; Regulating coupling frequency range by loading variable capacitance diode, having widened the applied microwave band limits of adaptation; When not affecting front and absorbing quality, supply lead is caused the back side by the form of punching, and aperture is smaller, can ignore the absorption qualitative effects in adaptation front; Back side supply lead is connected with the feed line being connected stabilized voltage power supply by large resistance, and then reaches the impact eliminated external signal and respond front microwave electromagnetic.
Operation principle of the present invention is: the electromagnetic wave that waveguide is launched arrives this novel varactor and loads adjustable waveguide mouth adaptation, the electromagnetic wave of special frequency channel can be absorbed, all the other electromagnetic waves can be reflected, by regulating feed voltage, resonance frequency and the quality factor of adaptation can be changed, then improve the range of application of this kind of novel waveguide adaptation.
Advantage of the present invention is: convenient disassembly, by Flange joint to waveguide mouth, also can be connected to waveguide mouth by fixture, so can install easily and dismantle; By carrying out bias adjustment to the variable capacitance diode loaded, coupling frequency range can be changed easily; Adopt back side lead-in wire feed, and by the large resistance isolate interference from outside of 10K Ω, make the bias voltage of front variable capacitance diode loading more desirable.The present invention can as the power match load of in particular cases applying, tuner, short-circuit plunger and attenuator etc.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the front metallic structure Rotating fields schematic diagram of the embodiment of the present invention.
Fig. 3 is the back side feeder line Rotating fields schematic diagram of the embodiment of the present invention.
Fig. 4 is load attenuation analog result figure of the present invention.
Fig. 5 is load attenuation experimental result picture of the present invention.
Embodiment
Following examples will the present invention is further illustrated by reference to the accompanying drawings.
See Fig. 1 ~ 3, the embodiment of the present invention is five-layer structure, is followed successively by front metallic structure layer 1, first medium layer 2, all-metal reflection shorting layer 3, second dielectric layer 4, back side feeder line layer 5 from top to bottom.
Described front metallic structure layer 1 is provided with square becket group 11 and lower square becket group 12, the opposite side center, left and right of each square becket and each lower square becket is equipped with opening A, variable capacitance diode 8 is connected, between the top of adjacent square becket and between bottom, between the top of adjacent lower square becket and be equipped with between bottom every straight resistance 6 between the two ends of opening A.
On the Far Left of shape becket group 11 up, under the left upper of square becket and the Far Left of lower square becket group 12, the left upper of square becket is respectively equipped with upper left supply lead hole 71, and on the rightmost of shape becket group 11 up, under the lower right corner place of square becket and the rightmost of lower square becket group 12, the lower right corner place of square becket is respectively equipped with upper right supply lead hole 72.
Feeder line layer 5 is provided with bottom left supply lead hole 71 ' and positive pole of stabilized voltage supply feed line 51 overleaf, bottom left supply lead hole 71 ' is docked with upper left supply lead hole 71, bottom left supply lead hole 71 ' is connected with one end of positive pole of stabilized voltage supply feed line 51, another termination positive pole of stabilized voltage supply of positive pole of stabilized voltage supply feed line 51.
Feeder line layer 5 is provided with bottom right supply lead hole 72 ' and stabilized voltage power supply negative feeder 52 overleaf, bottom right supply lead hole 72 ' is docked with upper right supply lead hole 72, bottom right supply lead hole 72 ' is connected with one end of stabilized voltage power supply negative feeder 52, another termination stabilized voltage power supply negative pole of stabilized voltage power supply negative feeder 52.
The middle part of positive pole of stabilized voltage supply feed line 51 disconnects and connects with left isolated resistance 53, and the middle part of stabilized voltage power supply negative feeder 52 disconnects and connects with right isolated resistance 54.
Described dielectric layer can adopt FR4 dielectric layer, and described variable capacitance diode 8 can adopt SMV1231-079 variable capacitance diode.
In fig. 2, be respectively labeled as L1=0.6mm, L2=1mm, L3=9.4mm, L4=0.6mm, L5=0.7mm.
During use, the present invention is fixed on one end of WR187 type waveguide by available metal folder, and calibration network analyzer, is adjusted to the band limits of waveguide single mode transport by display frequency; Turned by waveguide again and coaxially with concentric conductor, waveguide is connected with vector network analyzer; Positive and negative for the voltage of the stabilized voltage power supply hole that connects is connected with Facad structure of the present invention by back of the present invention feed line, to reach the object to the variable capacitance diode feed that front loads, in the bias range that variable capacitance diode can bear, regulate feed voltage, just can realize controllability of the present invention; Just can obtain corresponding load impedance coupling according to actual needs.
The front metallic structure layer that Fig. 2 provides is the array structure of 4 × 2, two openings ring opening part all loads variable capacitance diode, the spacing of ring and ring is 1.2mm, in order to make two split rings of each loading variable capacitance diode load identical voltage simultaneously, is connected between ring with ring by 10K Ω resistance.
Fig. 3 provides the back side feeder line Rotating fields schematic diagram of the embodiment of the present invention, when mating use with Fig. 2, supply lead hole is had in Fig. 2 and Fig. 3, that is, Fig. 3 back side feeder line layer is connected with Fig. 2 front metallic structure layer by supply lead hole, carry out bias voltage loading, and then make voltage-drop loading arrive front metallic structure layer, thus achieve the bias voltage of front structured metal layer is loaded.
Fig. 4 is load attenuation analog result figure of the present invention.Fig. 5 is load attenuation experimental result picture of the present invention.
At waveguide interruption-forming plane impedance matching box, just can not carry out the impedance matching adjustment of corresponding frequencies to waveguide termination by changing waveguide structure, Facad structure loads non-linear electronic components and parts, carrys out dynamic adjustments load impedance.Supply lead is outside at waveguide, and loads outer signals and completely cut off device to prevent the electromagnetic interference to waveguide inside.
The present invention only just can easily need complete by regulating feed voltage size; Be on the other hand the size of diaphragm or pin and position in the waveguide fixing after, its susceptance introduced is also just fixing, can only mate specific load, load is once change, again adaptation will be made, and the present invention is just added in waveguide mouth, and matched load can be regulated within the specific limits, overcome the problems referred to above to a certain extent.People are at employing non-linear active device, during regulation and control microwave device electromagnetic response, often perplex by the electromagnetic interference of outside, these interference signals can affect the operating state of matched-impedance load device to a certain extent, it is made to be difficult to deposit at these microwaves normally work in case, the present invention passes through metal substrate overleaf and loads the mode of high-frequency inductor or resistance, can effectively address this problem.The present invention directly can be connected with waveguide by ring flange or fixture, both greatly reduces added influence, and can not affect again the structure of waveguide, and meanwhile, structure of the present invention is simply light and handy, easy installation and removal.In sum, the present invention has following breakthrough and advantage:
(1) structural design is simple, based on microwave perfect absorber theoretical model, only needs according to actual needs, just can obtain the adaptation model of our needs through the fine setting of quiescent voltage signal.
(2) feeding classification is unique, by lead-in wire, feeder line is caused the back side, and by adopting the mode of isolated alternating-current resistance and inductance, avoids the interference of quiescent voltage and external signal.
(3) can dynamic adjustments matched impedance, by regulating the bias voltage loading variable capacitance diode two ends, the present invention's dynamic adjustments matched load in waveguide single mode transport frequency range can be made.
(4) finished product is light, and compact structure is light, is easy to carry; Connected by ring flange or fixture, be convenient to install and dismounting.
Claims (3)
1. the automatically controlled adjustable waveguide mouth load impedance adaptation of variable capacitance diode loading, is characterized in that for five-layer structure, is followed successively by front metallic structure layer, first medium layer, all-metal reflection shorting layer, second dielectric layer, back side feeder line layer from top to bottom;
Described front metallic structure layer is provided with square becket group and lower square becket group, the opposite side center, left and right of each square becket and each lower square becket is equipped with opening, variable capacitance diode is connected, between the top of adjacent square becket and between bottom, between the top of adjacent lower square becket and be equipped with every straight resistance between bottom between the two ends of opening;
On the Far Left of shape becket group up, under the left upper of square becket and the Far Left of lower square becket group, the left upper of square becket is respectively equipped with upper left supply lead hole, and on the rightmost of shape becket group up, under the lower right corner place of square becket and the rightmost of lower square becket group, the lower right corner place of square becket is respectively equipped with upper right supply lead hole;
Feeder line layer is provided with bottom left supply lead hole and positive pole of stabilized voltage supply feed line overleaf, bottom left supply lead hole is docked with upper left supply lead hole, bottom left supply lead hole is connected with one end of positive pole of stabilized voltage supply feed line, another termination positive pole of stabilized voltage supply of positive pole of stabilized voltage supply feed line;
Feeder line layer is provided with bottom right supply lead hole and stabilized voltage power supply negative feeder overleaf, bottom right supply lead hole is docked with upper right supply lead hole, bottom right supply lead hole is connected with one end of stabilized voltage power supply negative feeder, another termination stabilized voltage power supply negative pole of stabilized voltage power supply negative feeder;
The middle part of positive pole of stabilized voltage supply feed line disconnects and connects with left isolated resistance, and the middle part of stabilized voltage power supply negative feeder disconnects and connects with right isolated resistance.
2. the automatically controlled adjustable waveguide mouth load impedance adaptation of variable capacitance diode loading as claimed in claim 1, is characterized in that described dielectric layer adopts FR4 dielectric layer.
3. the automatically controlled adjustable waveguide mouth load impedance adaptation of variable capacitance diode loading as claimed in claim 1, is characterized in that described variable capacitance diode adopts SMV1231-079 variable capacitance diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510288123.4A CN104836004B (en) | 2015-05-29 | 2015-05-29 | The automatically controlled adjustable waveguide mouthful load impedance adaptation of varactor loading |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510288123.4A CN104836004B (en) | 2015-05-29 | 2015-05-29 | The automatically controlled adjustable waveguide mouthful load impedance adaptation of varactor loading |
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| CN104836004A true CN104836004A (en) | 2015-08-12 |
| CN104836004B CN104836004B (en) | 2017-06-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994360A (en) * | 2017-12-29 | 2019-07-09 | 中微半导体设备(上海)股份有限公司 | A kind of plasma rf adjusting method and plasma treatment appts |
| CN113848379A (en) * | 2021-08-09 | 2021-12-28 | 中国工程物理研究院应用电子学研究所 | High-power millimeter wave all-metal dummy load |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10163758A (en) * | 1996-12-03 | 1998-06-19 | Matsushita Electric Ind Co Ltd | Mixer |
| CN1352815A (en) * | 1999-05-27 | 2002-06-05 | Hrl实验室有限公司 | Strip line to waveguide transition |
| CN1759500A (en) * | 2003-03-10 | 2006-04-12 | 独立行政法人科学技术振兴机构 | Impedance matching circuit, and semiconductor element and radio communication device using the same |
| KR20090077510A (en) * | 2008-01-11 | 2009-07-15 | 한국과학기술원 | Voltage controlled oscillator using varactor-loaded split-ring resonator |
| CN204614913U (en) * | 2015-05-29 | 2015-09-02 | 厦门大学 | The automatically controlled adjustable waveguide mouth load impedance adaptation that a kind of variable capacitance diode loads |
-
2015
- 2015-05-29 CN CN201510288123.4A patent/CN104836004B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10163758A (en) * | 1996-12-03 | 1998-06-19 | Matsushita Electric Ind Co Ltd | Mixer |
| CN1352815A (en) * | 1999-05-27 | 2002-06-05 | Hrl实验室有限公司 | Strip line to waveguide transition |
| CN1759500A (en) * | 2003-03-10 | 2006-04-12 | 独立行政法人科学技术振兴机构 | Impedance matching circuit, and semiconductor element and radio communication device using the same |
| KR20090077510A (en) * | 2008-01-11 | 2009-07-15 | 한국과학기술원 | Voltage controlled oscillator using varactor-loaded split-ring resonator |
| CN204614913U (en) * | 2015-05-29 | 2015-09-02 | 厦门大学 | The automatically controlled adjustable waveguide mouth load impedance adaptation that a kind of variable capacitance diode loads |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994360A (en) * | 2017-12-29 | 2019-07-09 | 中微半导体设备(上海)股份有限公司 | A kind of plasma rf adjusting method and plasma treatment appts |
| CN109994360B (en) * | 2017-12-29 | 2021-06-01 | 中微半导体设备(上海)股份有限公司 | Plasma radio frequency adjusting method and plasma processing device |
| CN113848379A (en) * | 2021-08-09 | 2021-12-28 | 中国工程物理研究院应用电子学研究所 | High-power millimeter wave all-metal dummy load |
| CN113848379B (en) * | 2021-08-09 | 2023-04-25 | 中国工程物理研究院应用电子学研究所 | High-power millimeter wave all-metal dummy load |
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