CN114361754B - X-waveband magnetic control frequency-adjustable directional coupler - Google Patents
X-waveband magnetic control frequency-adjustable directional coupler Download PDFInfo
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- CN114361754B CN114361754B CN202210022525.XA CN202210022525A CN114361754B CN 114361754 B CN114361754 B CN 114361754B CN 202210022525 A CN202210022525 A CN 202210022525A CN 114361754 B CN114361754 B CN 114361754B
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Abstract
The invention relates to a microwave technology, in particular to a directional coupler with adjustable X-waveband magnetic control frequency. According to the invention, two rows of ferrite junctions are added in the SIW short-slit directional coupler, and a certain distance is kept between the two ferrite junctions in each row. Under the action of an external magnetic field, the ferrite junction is influenced in a magnetic field regulation mode, the equivalent inductance value of the SIW is changed, the change of the electric length of the transmission line is realized, the change of the frequency of the transmission line is further realized, and the adjustment of the frequency of the directional coupler is finally realized. The delay is low, the structure of an external component is not needed, the structure is simple and small, the integration is easy, and the influence on S31 (coupling degree) and S21 (insertion loss) is small under the condition of synchronously adjusting the frequencies of S11 (standing wave) and S41 (isolation); and facilitates high power transmission.
Description
Technical Field
The invention relates to a microwave technology, in particular to an X-waveband magnetic control frequency-adjustable directional coupler.
Background
With the development and progress of science and technology, the microwave technology gradually develops towards miniaturization and integration. Compared with the traditional directional coupler, the directional coupler with the adjustable frequency can effectively reduce the number of couplers of the whole wireless communication system, reduce the weight of the wireless communication system and is convenient for miniaturization.
Compared with the traditional waveguide structure, the substrate integrated waveguide is remarkably reduced in size, the structure is similar to a plane structure, integration is facilitated, and meanwhile the substrate integrated waveguide has the characteristics of a microstrip element.
The existing frequency-adjustable directional coupler regulated by an electric field can not be applied to the condition of high-power transmission because the frequency adjustment is realized by loading elements such as a variable capacitor.
Disclosure of Invention
Aiming at the problems or the defects, the invention provides the directional coupler with the adjustable X-waveband magnetic control frequency, which aims to solve the problem of high-power transmission of the existing directional coupler with the variable frequency.
An X-waveband magnetic control frequency-adjustable directional coupler comprises a SIW short-slit directional coupler and a ferrite junction.
The SIW short-slit directional coupler is of a main structure formed by adaptively and parallelly connecting two identical substrate integrated waveguide E surfaces, wherein the two substrate integrated waveguides share a row of metallized through holes; the two sections of substrate integrated waveguides achieve energy coupling by slotting in a common row of metallized vias (the slotting effect is achieved by reducing the number of metallized vias).
The ferrite junctions are 4 cuboids with the same parameters, the height of the ferrite junctions is equal to the height of the dielectric substrate, 2 ferrite junctions are taken as one group and divided into two groups, and the long sides and the height of the ferrite junctions are respectively tangential to the inner side surfaces of the two rows of non-shared metalized through holes of the SIW short-slit directional coupler in an adaptive manner.
The distance between two ferrite junctions on the same side is kept to be 2-6 mm, the length le of each ferrite is 4-6 mm, the sum of the lengths le of the two ferrite junctions on the same side and the distance fs between the two ferrite junctions on the same side is smaller than or equal to the width w of the common metallized through hole slit, and the outer connecting lines of all the ferrite junctions do not pass through the common metallized through hole slit, so that the influence of the ferrite junctions on the short slit directional coupler is reduced.
Further, the SIW short slot directional coupler is provided with a matching metallized through hole at the center of the slot for port impedance matching, so that the whole devices S11 (standing wave) and S41 (isolation) are better.
Further, in the transmission direction, the ferrite junctions on both sides are symmetrical about the common metallized via line, so that the performance of the whole device is better.
Further, the two ferrite junctions on the same side are symmetrical about the perpendicular bisector of the common metallized through hole open seam line, so that the whole device network is reciprocal, the S11 and S41 curves are not separated, and the performance is better.
The design method of the X-waveband magnetic control frequency-adjustable directional coupler comprises the following steps:
step 1, designing an SIW short-slit directional coupler of an X wave band; determining parameters of two substrate integrated waveguides: relative dielectric constant ε of dielectric substrate r Thickness t of dielectric substrate, two adjacent rows of metallizationsThe distance a between the through holes, the diameter d of the metalized through holes, the hole center distance p between adjacent metalized through holes in the same row and the slotting width w of the common metalized through hole.
And 2, adding a ferrite junction in the SIW short-slit directional coupler designed in the step 1.
The ferrite junctions are loaded in the dielectric layer, the saturation magnetization of the ferrite material is less than 3500Guass (namely, the ferrite material works in a low field region), a 2-6 mm distance is kept between two ferrite junctions on the same side, the length le of each ferrite is 4-6 mm, the sum of the length le of the two ferrite junctions on the same side and the distance fs of the ferrite junctions is less than or equal to w, the height of each ferrite junction is equal to the height of the medium, and the width of each ferrite junction is 0.7-1.5 mm.
Further, the SIW short slot directional coupler in step 1 is also loaded with matching metalized vias with diameter d 1.
When the device is used, a magnetic field perpendicular to the H surface of the substrate integrated waveguide is applied, the magnetic field intensity of the external magnetic field is changed, so that the conductive length of the substrate integrated waveguide is changed, the frequency adjustment of the directional couplers S11 (standing wave) and S41 (isolation) is finally realized, and the influence on the S31 (coupling degree) and the S21 (insertion loss) of the directional couplers is small.
In summary, the ferrite junction is added in the dielectric layer of the substrate integrated waveguide, and under the action of an external magnetic field, the equivalent inductance value of the transmission line (the substrate integrated waveguide transmission line in the invention) is changed, so that the change of the electrical length of the transmission line is realized, the change of the frequency of the transmission line is further realized, and the adjustment of the frequency of the directional coupler is finally realized; the frequency synchronization device has low delay, is not in an external component structure, is simple and small, is beneficial to integration, synchronously adjusts the frequencies of S11 (standing wave) and S41 (isolation) under the condition of not influencing S31 (coupling degree) and S21 (insertion loss), and can be applied to high-power transmission.
Drawings
FIG. 1 is a schematic structural diagram of a SIW short-slit directional coupler in step 1 of the example;
FIG. 2 is a graph of the S-parameter of the SIW short slit directional coupler of step 1 in the example;
FIG. 3 is a schematic perspective structural view of an embodiment of the present invention;
FIG. 4 is a graph of S-parameter under different bias fields according to an embodiment of the present invention;
FIG. 5 is a graph of parameters S11 and S41 under different bias fields according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
A design method of an X-waveband magnetic control frequency adjustable directional coupler comprises the following steps:
step 1, determining parameters according to a design method of a SIW short-slit directional coupler:
the thickness t =0.50mm of the dielectric substrate and the relative dielectric constant epsilon of the dielectric substrate r =2.1, the diameter d =0.55mm of the metalized through holes, the pitch p =0.68mm of adjacent metalized through holes in the same row, the distance a =14.32mm between two adjacent rows of metalized through holes, the diameter d1=0.15mm of a matching screw (i.e., a matching metalized through hole), and the gap width w =14.94mm; modeling and analyzing the transmission performance of the short-slot directional coupler in the HFSS to obtain 30dB of isolation and standing wave between 9.5GHz and 10.5GHz, wherein the coupling degree is about 11 dB; the structure is shown in figure 1, and the S parameter graph is shown in figure 2.
And 2, loading two rows of 4 ferrite junctions in total according to the SIW short-slit directional coupler obtained in the step 1, wherein the structure is shown in figure 3. Each row has two ferrite junctions, the distance between the ferrite junctions of each row is fs =3mm, the length le =5mm and the width wd =0.9mm.
And applying a magnetic field vertical to the H surface of the substrate integrated waveguide to the finally designed X-waveband magnetic control frequency adjustable directional coupler, wherein the magnetic field intensity of the externally applied magnetic field is gradually increased from zero. Fig. 4 is a graph of S parameter under different bias fields of the present embodiment, and fig. 5 is a graph of S11 and S41 parameters under different bias fields of the present embodiment.
As can be seen from FIGS. 4 and 5, the applied bias field is adjusted from H 0 Increase of =0kA/m to H 0 =71.6kA/m; corresponding S11 (standing wave) and S41The (isolation) frequency was changed from 10Ghz to 10.15Ghz, increasing 150Mhz with less impact on S31 (coupling) and S21 (insertion loss).
It can be seen from the above embodiments that the present invention adds two rows of ferrite junctions in the SIW short-slit directional coupler, and a certain distance is kept between two ferrite junctions in each row. Under the action of an external magnetic field, ferrite junctions are influenced in a magnetic field regulation mode, the equivalent inductance value of SIW is changed, the change of the electrical length of a transmission line is realized, the change of the frequency of the transmission line is further realized, the frequency of the directional coupler is finally regulated, the delay is low, the integration is easy, and under the condition that the synchronous regulation of the frequencies of S11 (standing wave) and S41 (isolation) is realized, the influence on S31 (coupling degree) and S21 (insertion loss) is small; and facilitates high power transmission.
Claims (7)
1. An X-waveband magnetic control frequency-adjustable directional coupler is characterized in that: the directional coupler comprises a SIW short-slit directional coupler and a ferrite junction;
the SIW short-slit directional coupler is of a main structure formed by adaptively and parallelly connecting two identical substrate integrated waveguide E surfaces, wherein the two substrate integrated waveguides share a row of metallized through holes; the two sections of substrate integrated waveguides realize energy coupling through slotting in a shared row of metallized through holes;
the ferrite junctions are 4 cuboids with the same parameters, the height of the ferrite junctions is equal to the height of the dielectric substrate, 2 ferrite junctions are taken as one group and divided into two groups, and the long sides and the height of the ferrite junctions are adaptively tangent to the inner side surfaces of the two rows of non-shared metalized through holes of the SIW short-slit directional coupler and are arranged in the dielectric layer;
the distance between the two ferrite junctions on the same side is kept to be 2mm-6mm, the length le of each ferrite is 4mm-6mm, the sum of the length le of the two ferrite junctions on the same side and the distance fs between the two ferrite junctions is smaller than or equal to the common metalized through hole opening width w, and the outer connecting lines of all the ferrite junctions do not pass through the common metalized through hole.
2. The X-band magnetically controlled frequency adjustable directional coupler of claim 1, wherein: and the SIW short-slot directional coupler is provided with a matched metalized through hole at the center of the slot for carrying out impedance matching of the port.
3. The X-band magnetically controlled frequency adjustable directional coupler of claim 1, wherein: the ferrite junctions on both sides are symmetrical with respect to a common metallized via connection.
4. The X-band magnetically controlled frequency adjustable directional coupler of claim 1, wherein: the two ferrite knots on the same side are symmetrical about the median perpendicular of the common metallized through hole opening line.
5. The directional coupler with adjustable X-band magnetron frequency as claimed in claim 1, wherein:
when the directional coupler is used, the frequency of the substrate integrated waveguide is changed by applying a magnetic field vertical to the H surface of the substrate integrated waveguide and changing the magnetic field intensity of the external magnetic field, and the frequency of the S11 standing wave and the S41 isolation of the directional coupler is adjusted.
6. The design method of the X-band magnetically controlled frequency adjustable directional coupler of claim 1, characterized by comprising the following steps:
step 1, designing an SIW short-seam directional coupler of an X wave band;
determining parameters of two substrate integrated waveguides: relative dielectric constant epsilon of dielectric substrate r The thickness t of the dielectric substrate, the distance a between two adjacent rows of metalized through holes, the diameter d of the metalized through holes, the hole center distance p between the adjacent metalized through holes in the same row and the slotting width w of the common metalized through hole;
step 2, adding ferrite junctions in the SIW short-slit directional coupler designed in the step 1;
the ferrite junctions are loaded in the dielectric layer, the saturation magnetization of the ferrite material is less than 3500Guass, a distance of 2mm-6mm is kept between two ferrite junctions on the same side, the length le of each ferrite is 4mm-6mm, the sum of the length le of the two ferrite junctions on the same side and the distance fs of the ferrite junctions is less than or equal to w, the height of the ferrite junctions is equal to the height of the dielectric, and the width of the ferrite junctions is 0.7mm-1.5mm.
7. The method for designing the directional coupler with adjustable magnetic control frequency in the X waveband as claimed in claim 6, wherein the method comprises the following steps: the SIW short slot directional coupler designed in step 1 is also loaded with matching metallized through holes of diameter d 1.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5184097A (en) * | 1990-02-23 | 1993-02-02 | Alcatel Transmission Par Faisceaux Hertziens | Agile microwave filter having at least one ferrite resonator |
| CN1825691A (en) * | 2006-01-26 | 2006-08-30 | 东南大学 | Microwave millimeter wave substrate integrated waveguide directioning coupler |
| CN104466418A (en) * | 2014-12-12 | 2015-03-25 | 南京大学 | Magnetic-field-adjustable half-mode substrate integrated waveguide antenna |
| CN104934662A (en) * | 2015-06-05 | 2015-09-23 | 电子科技大学 | Substrate integrated waveguide ferrite tunable band-pass filter |
| CN105914439A (en) * | 2016-05-23 | 2016-08-31 | 电子科技大学 | Substrate integrated waveguide (SIW) H-plane self-bias isolator based on soft magnetic nano wire array |
| CN107240747A (en) * | 2017-05-18 | 2017-10-10 | 电子科技大学 | A kind of SIW transmission lines |
| CN108565533A (en) * | 2018-01-09 | 2018-09-21 | 电子科技大学 | A kind of magnetic tuning method of generalized chebyshev SIW filters |
| JP2018182386A (en) * | 2017-04-04 | 2018-11-15 | 株式会社フジクラ | Manufacturing method of directional coupler |
| CN113506969A (en) * | 2021-06-21 | 2021-10-15 | 电子科技大学 | X-waveband magnetic control coupling coefficient adjustable directional coupler |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101257845B1 (en) * | 2012-09-18 | 2013-04-29 | (주)대원콘크리트 | Resin concrete mortar composition containing metalic fe-particle slag and resin concrete centrifugal pipe |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5184097A (en) * | 1990-02-23 | 1993-02-02 | Alcatel Transmission Par Faisceaux Hertziens | Agile microwave filter having at least one ferrite resonator |
| CN1825691A (en) * | 2006-01-26 | 2006-08-30 | 东南大学 | Microwave millimeter wave substrate integrated waveguide directioning coupler |
| CN104466418A (en) * | 2014-12-12 | 2015-03-25 | 南京大学 | Magnetic-field-adjustable half-mode substrate integrated waveguide antenna |
| CN104934662A (en) * | 2015-06-05 | 2015-09-23 | 电子科技大学 | Substrate integrated waveguide ferrite tunable band-pass filter |
| CN105914439A (en) * | 2016-05-23 | 2016-08-31 | 电子科技大学 | Substrate integrated waveguide (SIW) H-plane self-bias isolator based on soft magnetic nano wire array |
| JP2018182386A (en) * | 2017-04-04 | 2018-11-15 | 株式会社フジクラ | Manufacturing method of directional coupler |
| CN107240747A (en) * | 2017-05-18 | 2017-10-10 | 电子科技大学 | A kind of SIW transmission lines |
| CN108565533A (en) * | 2018-01-09 | 2018-09-21 | 电子科技大学 | A kind of magnetic tuning method of generalized chebyshev SIW filters |
| CN113506969A (en) * | 2021-06-21 | 2021-10-15 | 电子科技大学 | X-waveband magnetic control coupling coefficient adjustable directional coupler |
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