CN202534762U - C-band high-power circulator - Google Patents
C-band high-power circulator Download PDFInfo
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- CN202534762U CN202534762U CN 201220187249 CN201220187249U CN202534762U CN 202534762 U CN202534762 U CN 202534762U CN 201220187249 CN201220187249 CN 201220187249 CN 201220187249 U CN201220187249 U CN 201220187249U CN 202534762 U CN202534762 U CN 202534762U
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Abstract
The utility model discloses a C-band high-power circulator, which comprises a cavity (1), wherein the four sides of the cavity (1) are respectively provided with a magnetic circuit board (2), a cover plate (6) is mounted on the cavity (1) in a fastening manner, the cavity (1) comprises an upper cavity and a lower cavity which have symmetrical structures, a central conductor (4) is arranged at a joint of the upper cavity and the lower cavity, a permanent magnet (3), a grounding piece (7) and a ferrite gyromagnetic sheets (5) are sequentially arranged in each of the upper cavity and the lower cavity from the exterior to the interior, two sides of the central conductor (4) are respectively clamped by the two ferrite gyromagnetic sheets (5), a central-conductor transition section (8) is wrapped outside the central conductor (4), and one or more medium (9) layers are filled in the central-conductor transition section (8). According to the C-band high-power circulator, the problems of nonlinear effect, sparking and breakdown under high power, and the like are solved, a low field design is adopted, and mass production is facilitated; further the C-band high-power circulator has the advantages of light and small appearance, convenient installation, easy processing, high power capacity, wide temperature range, good temperature performance, and reduced production cost.
Description
Technical field
The utility model relates to the high-power circulator of a kind of C-band.
Background technology
Circulator is with the incident wave that gets into its arbitrary port; Import the multiport device of next port in proper order into according to the direction of confirming by quiet bias field; The type of circulator has multiple, is divided into junction type circulator, the rotary circulator of faraday, differential phase shift formula circulator etc. by operation principle.Relative other circulator, the junction type circulator can be taken into account small size and powerful requirement, and it is little also to have a loss, bandwidth, advantages such as technological comparative maturity.The junction type circulator is divided into lumped parameter formula and distributed constant formula again by parameter.Lumped parameter is only applicable to microwave low-frequency range (pattern-band).Distributed constant band line style circulator can satisfy the C-band demand, and this type circulator can be divided into High-Field and low field again by operation class (of an amplifying stage), and High-Field means that the direct current biasing field of use is higher than the required magnetic field of resonance absorption; Low means that the direct current biasing field of use is lower than the required magnetic field of resonance absorption.Fig. 3 is ferrite loss and magnetic field dependence sketch map, and as can beappreciated from fig. 3, there are three kinds of service areas in circulator magnetic field, is respectively: low place, resonance absorption district, high field region.The resonance absorption district is only applicable to some resonance absorption formula devices, and like resonance absorption isolator, and circulator all is operated in low place or high field region usually.Confirm to select for use High-Field or low field, mainly determine by following factors:
(1) operating frequency range;
(2) volume can meet the demands (along with the reduction of operating frequency, the volume of requirement is big more);
(3) power factor (PF) helps heat radiation, helps overcoming the nonlinear effect that peak power causes.
The instability that the generation of nonlinear effect derives from spin wave excites, when the microwave field (h) through circulator is higher than the critical field (h that excites spin wave
C), i.e. h＞h
CThe time, the nonlinear effect of ferromagnetic resonance then can appear.Fig. 4 is the nonlinear effect sketch map, and solid line is conventional ferrite loss and magnetic field dependence curve among Fig. 4, and dotted line and chain-dotted line are ferrite loss and the magnetic field dependence curve that occurs after the nonlinear effect.This moment whole low place, not only loss increases, and a submaximum occurs, and main peak is broadened, peak value reduces.
High-Field circulator design: owing to normalized value σ＞1 in work internal field, promptly more than the magnetic resonance field, work, so only be applicable to than work under the low microwave frequency; For example below the L-band; If surpass this frequency, because work magnetic field is too big, the device volume change becomes impracticable greatly on the contrary.
Low circulator design: the work magnetic field of a low circulator is far below resonance field, although external magnetic field causes material to level off to saturated work down more by force, because the effect internal field of demagnetizing field approaches zero, thus when designing, can make σ=0, and normalization magnetic is apart from P=k/u.
Based on the above,, select for use high field region favourable at microwave low-frequency range (below the L-band); In microwave high-frequency section (more than the S-band), select for use low place favourable.The utility model circulator operating frequency is positioned at C-band, in microwave high-frequency section (more than the S-band), therefore selects a low design for use.
The utility model content
The purpose of the utility model promptly is to overcome the deficiency of prior art, provides a kind of C-band high-power circulator, has solved nonlinear effect and problems such as high-power sparking down, puncture, adopts low design; Production technology is simple, helps producing in batches, and it is gently little to have profile, the convenient installation; Be easy to processing, the consistency of assembling and reliability, power capacity is high; Operating temperature range wide (40～+ 70 ℃), temperature performance is good, has reduced advantages such as cost.
The purpose of the utility model realizes through following technical scheme: the high-power circulator of a kind of C-band; It is made up of cavity, magnetic circuit plate, permanent magnet, center conductor, ferrite gyromagnet sheet and cover plate, around the cavity magnetic circuit plate is set respectively, forms a closed magnetic circuit; Cover plate is fastening to be installed on the cavity; Cavity is made up of upper and lower two cavitys of symmetrical configuration, and upper and lower cavity connecting place is provided with center conductor, all is provided with permanent magnet, ground strip and ferrite gyromagnet sheet in the upper and lower cavity from outside to inside successively; The outer respectively center conductor both sides that are sandwiched in of two ferrite gyromagnet sheets in the upper and lower cavity; Be provided with the center conductor changeover portion between ferrite gyromagnet sheet top and the cavity top in the cavity, the center conductor changeover portion is coated on outside the center conductor, is filled with one or more layers medium in the center conductor changeover portion.
Described magnetic circuit plate is a L type magnetic circuit plate; Described medium is a PTFE medium.
The beneficial effect of the utility model is:
(1) the utility model provides a kind of C-band high-power circulator, has the power capacity height, operating temperature range wide (40～+ 70 ℃), and temperature performance is good, adopts low design, and production technology is simple, helps producing in batches, has reduced advantages such as cost;
(2) the utility model provides a kind of C-band high-power circulator; In the high-power power leakage that produces down, in the design of circulator magnetic circuit shielding, upper and lower the reaching of circulator adds the pure iron sheet Q235 material that permeability is very high all around for fear of circulator; Make the influence of magnetic interference be reduced to minimum; Meanwhile, each part contact is tight, and ground connection is good;
(3) the utility model provides a kind of C-band high-power circulator; Fill medium and adopt the die sinking punching press; So that fixedly ferrite gyromagnet sheet is at the center of chamber hole, to guarantee axiality preferably, the while has also guaranteed ferrite gyromagnet sheet and has filled between the medium seamless; The contact-making surface place and the inner chamber body wall that prevent center conductor and ferrite gyromagnet sheet produce pressure drop, to its sparking;
(4) the utility model provides a kind of C-band high-power circulator, selects for use HCJ high, the bias magnetic field that temperature performance is good, and center conductor improved, make to need not center conductor is debugged;
(5) the utility model provides a kind of C-band high-power circulator, in assembling process, adopts special-purpose positioning tool, has eliminated the deviation that human factor causes; Guarantee the consistency of assembling; If find that rework rate reaches set point, then stop to produce in the test process, disqualification rate is dropped to minimum.
Description of drawings
Fig. 1 is the partial sectional view of overlooking of the utility model;
Fig. 2 is the side view cutaway drawing of the utility model;
Fig. 3 is ferrite loss and magnetic field dependence sketch map;
Fig. 4 is the nonlinear effect sketch map;
Among the figure, 1-cavity, 2-magnetic circuit plate, 3-permanent magnet, 4-center conductor, 5-ferrite gyromagnet sheet, 6-cover plate, 7-ground strip, 8-center conductor changeover portion, 9-medium, 10-upper cavity, 11-lower chamber.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further description, but the protection range of the utility model is not limited to the following stated.
Like Fig. 1, shown in Figure 2, the high-power circulator of a kind of C-band, it is made up of cavity 1, magnetic circuit plate 2, permanent magnet 3, center conductor 4, ferrite gyromagnet sheet 5 and cover plate 6; A magnetic circuit plate 2 is set respectively around the cavity 1; Form a closed magnetic circuit, cover plate 6 fastening being installed on the cavity 1, cavity 1 is made up of upper and lower two cavitys of symmetrical configuration; Upper and lower cavity connecting place is provided with center conductor 4; All be provided with permanent magnet 3, ground strip 7 and ferrite gyromagnet sheet 5 in the upper and lower cavity from outside to inside successively, outer respectively center conductor 4 both sides that are sandwiched in of two ferrite gyromagnet sheets 5 in the upper and lower cavity are provided with center conductor changeover portion 8 between ferrite gyromagnet sheet 5 tops and cavity 1 top in the cavity 1; Center conductor changeover portion 8 is coated on outside the center conductor 4; Be filled with one or more layers medium 9 in the center conductor changeover portion 8, described magnetic circuit plate 2 is a L type magnetic circuit plate, and described medium 9 is a PTFE medium.
One, technical indicator realizes
The realization of technical indicator mainly is that the performance of ferrite gyromagnet sheet determines.Ferrite gyromagnet sheet promptly will guarantee electricity function index, guarantees to bear high-power again.So ferrite gyromagnet sheet will be selected high-power series, on ferrite gyromagnet sheet, adopt the single face silver plating process simultaneously, with the ground connection property that guarantees that it is good.
Circulator can exert an influence to the components and parts of magnetosensitive sense on every side in microwave integrated circuit; The external magnetic field also can exert an influence to circulator simultaneously.For reaching the required bias magnetic field of circulator, must improve circulator magnetic circuit efficient in addition, reduce magnetic dispersion.Circulator magnetic screen design is to add the pure iron sheet Q235 material that permeability is very high reaching up and down all around of circulator cavity, forms a closed magnetic circuit, makes the permanent magnet concentration of energy inner at circulator as far as possible.Must have well between each part of circulator in addition, contact closely, it is good that ground connection is wanted.
Two, material selection
The material that circulator adopted should meet the regulation of GJB 1065A-2004.Mainly contain following material:
(1) ferrite gyromagnet sheet is selected the high-power trade mark for use.And single face is silver-plated, and is little to guarantee the insertion loss under high-power, and the circulator heating minimizes;
(2) circulator constructed of aluminium cavity electric conductive oxidation, all the other housing nickel plating chromium are handled;
(3) permanent magnet is selected HCJ Y series material preferably for use.
Three, technology realizes
(1) adopt the medium die sinking, with fixing gyromagnet sheet position at the center of cavity gyromagnet film perforation;
(2) design, frock, anchor clamps that processing is relevant guarantee the symmetry and the consistency of three ports, such as the center conductor positioning tool, are just adorning with the position that guarantees center conductor.
Four, environmental suitability
Select HCJ Y series material permanent magnet preferably for use, and adopt two-sided magnet, ensure the uniformity of bias magnetic field, the simultaneous adaptation environmental requirement.The cavity electric conductive oxidation, magnetic circuit plate, cover plate chromium plating have improved the anti-corrosion capability of product.
Five, reliability
The circulator of this structure, major part are cavity, cover plate and magnetic circuit sheet, and machining is convenient.Inner body is all fixed, and can experience a shock, mechanical test such as vibration.The cavity electric conductive oxidation, magnetic circuit plate, cover plate chromium plating have improved the anti-corrosion capability of product.
Six, solve the nonlinear effect problem
Before paying user's first sample, take into account normal temperature, low temperature, r in order to make circulator, having selected saturation magnetic moment for use is the gyromagnet disk of 1200Gs, 6 of assembling, debugging circulators are all qualified.Randomly draw 3 carry out three temperature, power is known the real situation, test data is seen table 1:
Table 1 three temperature, the power data (4 π Ms:1200Gs) of knowing the real situation
Can find out that from table 1 when power is tested, insert loss objective under the power and change greatly, this is to be caused by nonlinear effect.Bear the high-peak power ability and mainly carry out following improvement in order to improve circulator:
Choose the lower ferrite gyromagnet sheet of saturation magnetic moment, be used for improving generation nonlinear effect critical field hc.Theoretical with reference to Microwave Iron Oxide Elements, the P value of the circulator of low work is generally 0.5～0.8, and for high power device, the P value is desirable 0.5～0.6, between the gyromagnet sheet saturation magnetic moment 4 π Ms selection 1000-1200Gs.The P value was chosen as 0.6 at that time, and promptly ferrite gyromagnet sheet saturation magnetic moment 4 π Ms are chosen as 1200Gs.Select saturation magnetic moment for use is the gyromagnet sheet of 1000Gs at present, ressembles, debugs 6 of circulators, all qualified.Randomly draw 3 carry out three temperature, power is known the real situation, record data, test data is seen table 2:
Table 2 three temperature, the power data (4 π Ms:1000Gs) of knowing the real situation
Through the contrast of the test data under above test and three temperature, the power, can judge that selecting saturation magnetic moment 4 π Ms for use is that the gyromagnet sheet of 1000Gs is a preferred version.
Seven, solve high-power sparking down, breakdown problem
To circulator high-power down to ferrite gyromagnet sheet or the problem striking sparks over the ground, puncture; According to the experience of doing high power device in the past; The following solution of main utilization: the one, center conductor improves, three ports and with big Y junction part rounding.Require before electroplating simultaneously to go center conductor totally because of the burr that cutting produces.The 2nd, center conductor 50 Ω changeover portion filled polytetrafluoroethylene media are used to prevent that 50 Ω changeover portions sparkings from burning center conductor, and according to relevant bibliographical information, the PTFE medium of 1 millimeter thickness can be more than the withstand voltage 4000V.
Eight, about quality Control
(1) when Incoming Quality Control, tests with relevant inspection specification in strict accordance with drawing requirement;
(2) frock of machining high-precision, anchor clamps are to guarantee consistency in batches;
(3) formulate the technical papers that circulator is produced, produce in strict accordance with technical papers;
(4) based on accomplishing on the above basis, improve, improve center conductor at 3.
Product to producing is tested, and draws the advantage that the utility model product has full performance, and promptly index is comprehensive, and require high, outstanding especially advantage have following some:
(1) power capacity is high;
(2) operating temperature range wide (40～+ 70 ℃), temperature performance is good;
(3) low design, production technology is simple, helps producing in batches, reduces cost.
The utility model product the key technical indexes is as shown in table 3 below with the contrast of army of enterprise mark set quota:
Table 3 the utility model the key technical indexes and the mark set quota contrast of army of enterprise
Nine, the high-power countermeasure of circulator
Excite down at high-peak power, device will produce problems such as nonlinear effect and sparking, puncture.
The generation of nonlinear effect mainly is under the high-peak power, and the instability of gyromagnet sheet spin wave excites.When the microwave field (h) through circulator is higher than the critical field (h that excites spin wave
c), i.e. h＞h
cThe time,
It is thus clear that the raising circulator bears the high-peak power ability and mainly contains following two kinds of methods:
(1) improve ferrite gyromagnet sheet self-rotating wave linewidth Δ HK, method commonly used is in the ferrite gyromagnetic material, to add quick relaxation ion to improve Δ HK, has suppressed the spin wave non-linear growth greatly, has improved ferrite gyromagnetic material critical field h
cThereby, improve the anti-peak power capability of device, but the resonance live width Δ H of material is increased, increase thereby cause device to insert loss, so the consideration of should compromising during design;
(2) reduce the generation that gyromagnet sheet saturation magnetic moment 4 π Ms suppress nonlinear effect.Theoretical with reference to Microwave Iron Oxide Elements, the P value of the circulator of low work is generally 0.5～0.8, and for high-power circulator, the P value is desirable 0.5～0.6, between the gyromagnet sheet saturation magnetic moment 4 π Ms selection 1000-1200Gs.
Ten, loss is little under the high-power condition
The insertion loss of circulator mainly comprises: reflection loss; Loss; Dielectric loss; Magnetic loss etc.Our design is considered in all its bearings, reduces loss by every possible means.Narration respectively below:
(1) reflection loss (reflection loss mainly causes power reflection and the loss that produces by input, output standing wave):
When standing wave VSWR=1.2, P
ReflThe loss that causes is 0.036dB; When standing wave VSWR=1.10, P
ReflThe loss that causes is 0.01dB.So reducing standing wave is useful to reducing loss;
(2) loss (loss mainly comprises microstrip line loss and cavity resonant loss):
Microstrip line is the main traverse line of Transmission Microwave energy, and we select δ for use is 0.3 beryllium cyanogen copper, and electroplate is led gold (EP.Ag/Au) again, existing intensity, again good electric conductivity is arranged;
The cavity resonant loss can be found out from following formula:
Q
eBe loaded quality factor, Q
LIt is Q-unloaded;
In order to obtain little Q
e, select the magnetic sheet radius R should be little, thickness d should be big.Q
LIncrease, we realize through improving inner chamber fineness and gyromagnet sheet fineness;
(3) dielectric loss: dielectric loss depends on the loss angle tangent tg δ of gyromagnet sheet.Domestic mean level is 3～5 * 10-4, and we require the gyromagnet sheet to reach 2 * 10 as far as possible for this
-4
(4) magnetic loss: magnetic loss exists the natural resonance that causes to produce by the ferro resonance and the domain wall of material self.Its size depends primarily on material quality and parameter.Effective line width Δ H for example
e, it is better little to heal.
Proved that through former experiences and practices above measure is very effective to reducing loss.
Claims (3)
1. high-power circulator of C-band; It is characterized in that: it is made up of cavity (1), magnetic circuit plate (2), permanent magnet (3), center conductor (4), ferrite gyromagnet sheet (5) and cover plate (6); Cavity (1) is provided with a magnetic circuit plate (2) all around respectively; Form a closed magnetic circuit, cover plate (6) is fastening to be installed on the cavity (1), and cavity (1) is made up of upper and lower two cavitys of symmetrical configuration; Upper and lower cavity connecting place is provided with center conductor (4); All be provided with permanent magnet (3), ground strip (7) and ferrite gyromagnet sheet (5) in the upper and lower cavity from outside to inside successively, the two ferrite gyromagnet sheets (5) in the upper and lower cavity are outer respectively to be sandwiched in center conductor (4) both sides, is provided with center conductor changeover portion (8) between the interior ferrite gyromagnet of cavity (1) sheet (5) top and cavity (1) top; Center conductor changeover portion (8) is coated on outside the center conductor (4), is filled with one or more layers medium (9) in the center conductor changeover portion (8).
2. the high-power circulator of a kind of C-band according to claim 1 is characterized in that: described magnetic circuit plate (2) is a L type magnetic circuit plate.
3. the high-power circulator of a kind of C-band according to claim 1 is characterized in that: described medium (9) is a PTFE medium.
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| CN 201220187249 CN202534762U (en) | 2012-04-28 | 2012-04-28 | C-band high-power circulator |
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| CN 201220187249 CN202534762U (en) | 2012-04-28 | 2012-04-28 | C-band high-power circulator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629705A (en) * | 2012-04-28 | 2012-08-08 | 成都泰格微波技术股份有限公司 | C-band high-power circulator and production process thereof |
| CN102637936A (en) * | 2012-04-28 | 2012-08-15 | 成都泰格微波技术股份有限公司 | C-band heavy-power circulator |
| CN110854491A (en) * | 2019-11-26 | 2020-02-28 | 北京无线电测量研究所 | Strip line isolator |
| CN111883899A (en) * | 2020-07-20 | 2020-11-03 | 中国电子科技集团公司第九研究所 | Method for improving temperature stability of lumped parameter circulator |
| CN114421104A (en) * | 2021-12-09 | 2022-04-29 | 北京无线电测量研究所 | 90-degree nonreciprocal phase shifter |
-
2012
- 2012-04-28 CN CN 201220187249 patent/CN202534762U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629705A (en) * | 2012-04-28 | 2012-08-08 | 成都泰格微波技术股份有限公司 | C-band high-power circulator and production process thereof |
| CN102637936A (en) * | 2012-04-28 | 2012-08-15 | 成都泰格微波技术股份有限公司 | C-band heavy-power circulator |
| CN110854491A (en) * | 2019-11-26 | 2020-02-28 | 北京无线电测量研究所 | Strip line isolator |
| CN111883899A (en) * | 2020-07-20 | 2020-11-03 | 中国电子科技集团公司第九研究所 | Method for improving temperature stability of lumped parameter circulator |
| CN114421104A (en) * | 2021-12-09 | 2022-04-29 | 北京无线电测量研究所 | 90-degree nonreciprocal phase shifter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: C-band heavy-power circulator Effective date of registration: 20130910 Granted publication date: 20121114 Pledgee: Bank of Chengdu science and technology branch of Limited by Share Ltd Pledgor: Chengdu Tiger Microwave Technology Co., Ltd. Registration number: 2013510000003 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20150707 Granted publication date: 20121114 Pledgee: Bank of Chengdu science and technology branch of Limited by Share Ltd Pledgor: Chengdu Tiger Microwave Technology Co., Ltd. Registration number: 2013510000003 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20150428 |
|
| EXPY | Termination of patent right or utility model |