CN202930523U - Full-K-band broadband high-power junction circulator - Google Patents
Full-K-band broadband high-power junction circulator Download PDFInfo
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- CN202930523U CN202930523U CN 201220665135 CN201220665135U CN202930523U CN 202930523 U CN202930523 U CN 202930523U CN 201220665135 CN201220665135 CN 201220665135 CN 201220665135 U CN201220665135 U CN 201220665135U CN 202930523 U CN202930523 U CN 202930523U
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Abstract
The utility model relates to a full-K-band broadband high-power junction circulator. Its waveguide opening is provided with a BJ220 standard waveguide which is a T-shaped waveguide. Stepped impedance matchers are symmetrically arranged on and below the internal junction center of the T-shaped waveguide. Each of the stepped impedance matchers is a Y-shaped three-grade stepped impedance matcher with included angles being 120 degrees and three ends being symmetrical, and satisfies the third-order Chebyshev impedance matching relation. Two symmetrical ferrite wafers are respectively welded at the center of the highest order of the stepped impedance matchers. The top surface and bottom surface of the junction center of the T-shaped waveguide are respectively provided with permanent magnet cylinders, outside which ferro-nickel wafers are adhered. The ferro-nickel wafers have a temperature compensation effect. The T-shaped waveguide's upper and lower outer shells are provided with cooling fins. The circulator provided by the utility model obtains good electrical performance at the full-K-band and withstands 100W average power and achieves broadband wide-temperature and high-power operation properties which cannot be achieved in the prior art. The device provided by the utility model has a wide application prospect in the field of military and civil broadband microwave electronics manufacturing.
Description
Technical field
The utility model belongs to for wideband radar, communication and electronic warfare system as the transmit-receive switch of antenna duplexer and the circulator technical field that solves inter-stage isolation, impedance matching, is specifically related to a kind of full K band broadband high power junction circulator.
Background technology
Circulator has a wide range of applications in the military affairs such as radar, electronic countermeasures, communication, civil electronic system.It is to be used as the transmit-receive switch of antenna duplexer and the important devices that solves a series of practical problems such as inter-stage isolation, impedance matching.Modern Electronic Countermeasure system, wideband radar often need to use the broadband high-power circulator of full frequency band bandwidth.Full frequency band bandwidth circulator is all high than conventional circulator to impedance matching and Ferrite Material performance requirement, and especially at the high power circulator of the full K bandwidth of the K of higher frequency band wave band development, its difficulty is larger.This class full frequency band bandwidth circulator design technology is still immature at present, also has no the play-by-play of relevant design technology.Existing designing technique is to adopt cylindrical or triangle cylindricality adaptation at the waveguide core knot; In order to make up the deficiency in upper frequency ferrite gyromagnetism, adopt two medium shim oxysomes to be placed in the method for designing of circulator centre junction, in order to improve the ferrite loaded Q, design narrows down bandwidth like this, can not reach the broadband target that covers full K wave band; Be unfavorable for heat radiation, be difficult to bear high-average power; Magnetic bias does not have the temperature-compensating measure, can not wide temperature work.
Summary of the invention
For the circulator that solves prior art can not cover full K wave band the broadband target, be unfavorable for heat radiation, be difficult to bear the problem such as high-average power, the utility model provides that a kind of loss is little, standing wave is little, bear power high, cover full K wave band (the broadband high-power junction circulator of 18GHz～26.5GHz).
Concrete technical solution is as follows:
The hybrid-T 1 that a kind of complete its waveguide mouth of K band broadband high power junction circulator is the BJ220 standard waveguide, the interior knot of hybrid-T 1 center is symmetrically arranged with stepped impedance adaptation 2 up and down; Described stepped impedance adaptation 2 is 3 grades of stepped impedance adaptations of three end Symmetric Y shapes of 120 degree for mutual angle, and it satisfies 3 rank Chebyshev's impedance matching relations; The top step center of stepped impedance adaptation 2 is welded with respectively two symmetrical ferrite wafers 3;
Hybrid-T 1 knot center end face and bottom surface are respectively equipped with permanent magnetism cylinder 4, permanent magnetism cylinder 4 external pasting dilval disks 5, and dilval disk 5 has temperature compensation effect; On hybrid-T 1, lower casing is provided with fin 6.
Described ferrite wafer 3 materials are the Ni5000 ferrite, and single face is silver-plated, and utilize soldering and metallic walls directly to weld.
Described permanent magnetism cylinder 4 materials are the high energy product Nd-Fe-B permanent magnet.
The utility model is in order to satisfy the broadband requirement that covers full K wave band, adopt waveguide core knot high compression to reduce the method that the centre junction waveguide impedance is widened bandwidth, this has increased the impedance ratio with standard waveguide, must solve the Broadband Matching problem between center of compression knot and standard waveguide, to this problem the design phase improvements over the prior art be: adopt at the knot Central Symmetry the cylindrical or triangle cylindricality adaptation that 3 grades of stepped impedance adaptations of Y shape replace prior art is set.3 grades of stepped impedance adaptations of Y shape of prior art the design have more the broadband advantage relatively, and its advantage is: TE
10The cut-off frequency of basic mode is lower, and in identical operation wavelength situation, waveguide dimensions is less; TE
10The mould cut-off frequency is lower and TE than rectangular waveguide
20The mould cut-off frequency is higher than rectangular waveguide, makes the single-mode working band very wide, therefore has more wide bandwidth.
The utility model is in order to satisfy high-average power and wide temperature requirement, improvements over the prior art are: 1. the Ni5000 Ferrite Material that adopts high live width, and design as far as possible thinly under the gyromagnetism prerequisite satisfying, the silver-plated direct soldering of single face is beneficial to like this heat radiation and reduces outer magnetic bias on metallic walls; Existing designing technique is unfavorable for heat radiation and reduces outer magnetic bias; 2. adopt the high energy product Nd-Fe-B permanent magnetic to make magnetic bias, and have the dilval disk to do temperature-compensating, can realize wide temperature work.
The utility model is compared with prior art products and is had following advantage:
1. the centre junction high compression in conjunction with 3 grades of Chebyshev's stepped impedance adaptations of up and down Symmetric Y shape bandwidth of operation of broadening circulator greatly, reaches the target that covers full K wave band (38% bandwidth), and prior art can only reach 15% bandwidth at most;
2. adopt the method for two direct solderings of symmetrical ferrite wafer on metallic walls of high live width, be beneficial to heat radiation and reduce outer bias field, device can be born at full K wave band be up to the 100W average power;
3. adopt the high energy product Nd-Fe-B permanent magnetic to make magnetic bias, and have the dilval disk to do temperature-compensating, can realize wide temperature work;
4. component compact, lightweight volume is little.
Circulator of the present utility model has obtained good electrical property and has born the 100W average power at full K wave band, has reached the performance of the gentle high-power operation of the inaccessiable wide bandwidth of prior art.This device has a extensive future in military and civilian wide-band microwave electronic equipment manufacturing field.
Description of drawings
Fig. 1 is the utility model schematic appearance.
Fig. 2 is the utility model structural front view.
Fig. 3 be in Fig. 2 A-A to vertical cross section.
Fig. 4 is partial enlarged drawing in Fig. 3.
Fig. 5 be in Fig. 2 B-B to horizontal sectional drawing.
Sequence number in upper figure: hybrid-T 1, stepped impedance adaptation 2, ferrite wafer 3, permanent magnetism cylinder 4, dilval disk 5, fin 6.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is done to describe further.
Referring to Fig. 1 and Fig. 2, a kind of full K band broadband high power junction circulator, the hybrid-T 1 that its waveguide mouth is the BJ220 standard waveguide, the interior knot of hybrid-T 1 center is symmetrically arranged with stepped impedance adaptation 2 up and down; Described stepped impedance adaptation 2 is 3 grades of stepped impedance adaptations of three end Symmetric Y shapes of 120 degree for mutual angle, and it satisfies 3 rank Chebyshev's impedance matching relations, sees Fig. 5; The top step center of stepped impedance adaptation 2 is welded with respectively two symmetrical ferrite wafers 3, sees Fig. 3 and Fig. 4; Ferrite wafer 3 materials are the Ni5000 ferrite, and single face is silver-plated, and utilize soldering and metallic walls directly to weld.
Hybrid-T 1 knot center end face and bottom surface are respectively equipped with permanent magnetism cylinder 4, and permanent magnetism cylinder 4 materials are the high energy product Nd-Fe-B permanent magnet; Permanent magnetism cylinder 4 external pasting dilval disks 5, dilval disk 5 has temperature compensation effect; On hybrid-T 1, lower casing is provided with fin 6.
The width of stepped impedance adaptation 2 is S as shown in Figure 5, and length is respectively L1, L2, L3; 3 grades highly are respectively h1, h2, h3 as shown in Figure 4.
The diameter of ferrite wafer 3 is Φ f as shown in Figure 4, and thickness is hf, and ferrite wafer 3 single faces are silver-plated, and is welded in the top step center of stepped impedance adaptation 2.
Permanent magnetism cylinder 4 diameters are Φ 4 as shown in Figure 3, and length is h4.Dilval disk 5 diameters are Φ 5, and thickness is h5.
All waveguide wall thickness t are unified is 1mm.
Utilize empirical equation to estimate ferrite wafer 3 radius R initial values and centre junction duct height h initial value.
Calculate the center ridge waveguide equiva lent impedance Z of stepped impedance adaptation 2
eCan determine each stepped impedance value in conjunction with the respective bandwidth parameter by 3 rank Chebyshev's impedance meters, can determine lateral dimension after trying to achieve each stepped impedance value, be determined by guide wavelength and longitudinal size is each rank length, namely by λ
cObtain λ
g, each rank fundamental length is λ
g/ 4.Each rank fundamental length λ
g/ 4 deduct correction amount L
i, be each rank final length.
On above initial value estimation basis, adopt the circulator global optimization to determine stepped impedance adaptation 2 length at different levels and wide occurrence and the diameter of phi f occurrence of ferrite wafer 3:
Width S=the 4.8mm of stepped impedance adaptation 2, length is respectively L1=3.63mm, L2=2.45mm, L3=2.92mm; Highly be respectively h1=1.4mm, h2=1mm, h3=0.2mm.
The diameter of phi f of ferrite wafer 3 is 3.47mm, and thickness h f is 0.65mm.Determine Nd-Fe-B permanent magnetic cylinder 4 diameter of phi 4=4.5mm, length h4=15mm by debugging; Dilval disk 5 diameter of phi 5=6mm, thickness h 5=1.3mm.
The circulator the performance test results is: in the full K frequency band of 18GHz～26.5GHz, and isolation 〉=19dB, loss≤0.38dB, standing-wave ratio≤1.33.The power experiment shows: in 18～26.5GHz frequency band, under the continuous wave transmitter 100W power condition of broadband, circulator is working properly.
Claims (3)
1. full K band broadband high power junction circulator, the hybrid-T (1) that its waveguide mouth is the BJ220 standard waveguide is characterized in that: the interior knot of hybrid-T (1) center is symmetrically arranged with stepped impedance adaptation (2) up and down; Described stepped impedance adaptation (2) is 3 grades of stepped impedance adaptations of three end Symmetric Y shapes of 120 degree for mutual angle, and it satisfies 3 rank Chebyshev's impedance matching relations; The top step center of stepped impedance adaptation (2) is welded with respectively symmetrical two ferrite wafers (3);
Hybrid-T (1) knot center end face and bottom surface are respectively equipped with permanent magnetism cylinder (4), permanent magnetism cylinder (4) external pasting dilval disk (5), and dilval disk (5) has temperature compensation effect; The upper lower casing of hybrid-T (1) is provided with fin (6).
2. a kind of full K band broadband high power junction circulator according to claim 1, it is characterized in that: described ferrite wafer (3) material is the Ni5000 ferrite, and single face is silver-plated, and utilizes soldering and metallic walls directly to weld.
3. a kind of full K band broadband high power junction circulator according to claim 1, it is characterized in that: described permanent magnetism cylinder (4) material is the high energy product Nd-Fe-B permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220665135 CN202930523U (en) | 2012-12-06 | 2012-12-06 | Full-K-band broadband high-power junction circulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220665135 CN202930523U (en) | 2012-12-06 | 2012-12-06 | Full-K-band broadband high-power junction circulator |
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| CN202930523U true CN202930523U (en) | 2013-05-08 |
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| CN 201220665135 Expired - Lifetime CN202930523U (en) | 2012-12-06 | 2012-12-06 | Full-K-band broadband high-power junction circulator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956535A (en) * | 2014-04-01 | 2014-07-30 | 涞水县涞磁凯立特磁业有限公司 | X-band quick switch capable of bearing high average power |
| CN103956536A (en) * | 2014-04-01 | 2014-07-30 | 涞水县涞磁凯立特磁业有限公司 | X-band polarization plane change-over switch capable of bearing high average power |
| CN105337010A (en) * | 2015-10-22 | 2016-02-17 | 南京灏众通信技术有限公司 | Novel low intermodulation double ridge waveguide circulator/isolator |
| RU2606518C1 (en) * | 2015-10-09 | 2017-01-10 | Акционерное общество "Научно-исследовательский институт Приборостроения имени В.В. Тихомирова" | T-circulator |
| CN109638399A (en) * | 2019-01-21 | 2019-04-16 | 电子科技大学 | A kind of SIW single ridged waveguides circulator |
-
2012
- 2012-12-06 CN CN 201220665135 patent/CN202930523U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956535A (en) * | 2014-04-01 | 2014-07-30 | 涞水县涞磁凯立特磁业有限公司 | X-band quick switch capable of bearing high average power |
| CN103956536A (en) * | 2014-04-01 | 2014-07-30 | 涞水县涞磁凯立特磁业有限公司 | X-band polarization plane change-over switch capable of bearing high average power |
| CN103956535B (en) * | 2014-04-01 | 2016-05-04 | 涞水县涞磁凯立特磁业有限公司 | Can bear the X-band high-speed switch of high-average power |
| CN103956536B (en) * | 2014-04-01 | 2016-05-18 | 涞水县涞磁凯立特磁业有限公司 | Can bear the X-band plane of polarization change-over switch of high-average power |
| RU2606518C1 (en) * | 2015-10-09 | 2017-01-10 | Акционерное общество "Научно-исследовательский институт Приборостроения имени В.В. Тихомирова" | T-circulator |
| CN105337010A (en) * | 2015-10-22 | 2016-02-17 | 南京灏众通信技术有限公司 | Novel low intermodulation double ridge waveguide circulator/isolator |
| CN105337010B (en) * | 2015-10-22 | 2019-05-21 | 南京灏众通信技术有限公司 | A kind of novel low intermodulation double ridged waveguide circulator/isolator |
| CN109638399A (en) * | 2019-01-21 | 2019-04-16 | 电子科技大学 | A kind of SIW single ridged waveguides circulator |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130508 |
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| CX01 | Expiry of patent term |