CN105680122A - R-S phase shifter with stable phase shift - Google Patents
R-S phase shifter with stable phase shift Download PDFInfo
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- CN105680122A CN105680122A CN201410669418.1A CN201410669418A CN105680122A CN 105680122 A CN105680122 A CN 105680122A CN 201410669418 A CN201410669418 A CN 201410669418A CN 105680122 A CN105680122 A CN 105680122A
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Abstract
The invention belongs to the field of microwave devices, and relates to a solution to the problem of inherent phase shift instability for a lock-type Reggia-Spencer phase shifter. The R-S phase shifter with stable phase shift is characterized in that the direct-current resistance between a metal waveguide cavity of the R-S phase shifter and a metal cover plate is greater than 0.5 ohm. Furthermore, an insulating layer is arranged on the surface of the metal waveguide cavity or the surface of the metal cover plate, or insulating layers are arranged on the surface of the metal waveguide cavity and the surface of the metal cover plate at the same time. The R-S phase shifter solves the problem that the phase shift of the R-S phase shifter is unstable. The phase shift of the phase shifter manufactured without using the scheme of the invention after high and low temperature, vibration and ageing is changed irregularly, hundreds of degrees can be reached to the maximum extent, and the phase shift curve of the phase shifter manufactured by using the scheme of the invention after high and low temperature, vibration and ageing is not changed.
Description
1. technical field
The invention belongs to microwave device field, it relates to the solution of a kind of phase shift instability problem that locking-type Reggia-Spencer phase shifter (hereinafter referred to as R-S phase shifter) is intrinsic.
2. background technology
Microwave ferrite phase shifter is extensively for Phased Array Radar Antenna system, microwave ferrite phase shifter comprises bimodulus linear polarization phase shifter, bimodulus circular polarization phase shifter, nonreciprocal rectangle ring phase shifter, R-S phase shifter etc., wherein R-S is little with its volume, weight is light, phase shift reciprocity, be operated in all advantages such as linear polarization pattern, and special suitable for machine load or missile-borne phased array radar use.
Existing R-S phase shifter is because of its intrinsic constructional feature, the metal cover board of its metal wave guide cavity and side forms closed waveguide by conductive adhesive, form the short circuit to ferrite magnetic loop, its short circuited resistance is very little, a heavy loading that to be equal on phase shifter in parallel, drive phase shifter time this above usually consume more than 3/4ths power, cause phase shifter drives power consumption excessive, and the resistance of this short circuited resistance is very unstable, temperature variation, vibration, aging all can cause the irregular change of short circuited resistance, directly cause the irregular change of phase shifter phase-shift curve, maximum phase shift variations is made to reach Baidu, it is made to use.
The main drawback performance being summed up prior art existence is as follows:
1. the resistance of short circuited resistance is very unstable, and temperature variation, vibration, aging all can cause the irregular change of short circuited resistance, directly causes the irregular change of phase shifter phase-shift curve so that it is cannot use.
2. short circuited resistance is very little, a heavy loading that to be equal on phase shifter in parallel, usually consumes the power of more than 3/4ths above this, cause phase shifter drives power consumption excessive when driving phase shifter.
3. there is larger difference in short circuited resistance resistance between different phase shifter, causes different relatively big, the temperature compensation that is difficult to realize phase shift of the drive current differences between phase shifter.
The document few in number that can inquire about this phase shifter all only relates to the content in phase shifter phase shift mechanism, does not relate to the content that aspect is stablized in phase shift in engineer applied. As:
[01] Jiang Renpei, Dong Shengkui delivered " Reggia-Spencer phase shifter phase shift study mechanism " in the phase in January, 2003 " modern radar " the 1st, the phase shift mechanism of this phase shifter had been analyzed, it does not have relate to the content that aspect is stablized in phase shifter phase shift.
[02] " the ADesignTheoryForReggia-SpencerReciprocalFerritePhaseShif ters " that W.E.Hord, F.J.Rosenbaum, C.R.Boyd deliver, only relates to mechanism, does not relate to the content that aspect is stablized in phase shifter phase shift.
[03] " ACOUPLED-MODEDESCRIPTIONOFTHEREGGIA-SPENCERPHASESHIFTER " that C.R.Boyd delivers, only relates to mechanism, does not relate to the content that aspect is stablized in phase shifter phase shift.
3. summary of the invention
4. the object of innovation and creation
It is an object of the invention to: overcome the shortcomings such as the temperature compensation that the phase shift that existing R-S phase shifter exists is unstable, driving power consumption is excessive, be difficult to realize phase shift, it is provided that a kind of phase shift is stable, driving power consumption is little, the R-S phase shifter that easily realizes phase shift temperature compensation.
5. technical scheme
The technical scheme of the present invention is as follows:
The R-S phase shifter that phase shift is stable, is characterized in that, the direct current resistance between the metal wave guide cavity of R-S phase shifter and metal cover board is greater than 0.5 ohm.
Further, on metal wave guide cavity surface or metal cover board surface or simultaneously have a layer insulating on the two surface.
Described thickness of insulating layer is 0.1um-50um.
The specific inductivity of described insulating layer material is: 1-200; The dielectric loss tangent value of insulating layer material is: be less than 0.1.
6. the advantage of innovation and creation
1. the invention solves the problem of R-S phase shifter phase shift instability. Do not adopt phase shifter irregular change of phase shift after high/low temperature, vibration, aging that scheme of the present invention manufactures, maximum can Da Shang Baidu, adopt the phase shifter of scheme manufacture of the present invention phase-shift curve after high/low temperature, vibration, aging not change.
2. the present invention significantly reduces the driving power consumption of R-S phase shifter. Do not adopt when Phase-switching frequency is 1KHz the phase shifter drives power consumption of scheme manufacture of the present invention to be about 0.7W～1W, adopt the phase shifter drives power consumption of scheme manufacture of the present invention to be only about 0.2W.
3. the invention solves the problem that phase shifter realizes unified temperature compensation. Do not adopt phase shifter that scheme of the present invention manufactures due to drive current differences different bigger, cannot simply adopt unified temperature compensation measure, the phase shift temperature factor of phase shifter is at about 1 °/DEG C, the phase shifter drives electric current consistence adopting scheme of the present invention to manufacture is fine, unified temperature compensation circuit can be designed, the phase shift temperature factor of phase shifter is greatly improved, below dropping to 0.2 °/DEG C.
Suitable application area of the present invention is locking-type R-S phase shifter, it is possible to be generalized in other device that there is similar short-circuit structure or equipment.
7. accompanying drawing explanation
Fig. 1 is the metal wave guide cavity of R-S phase shifter and the metal cover board schematic diagram of both sides;
In figure: 1 metal wave guide cavity 2 metal cover board;
Fig. 2 is prior art R-S phase shifter drives circuit equivalent schematic diagram;
In figure: 3 power supply 4 phase shifter drives coil 5 short circuited resistance 6 ground connection;
Fig. 3 is the R-S phase shifter drives circuit equivalent schematic diagram adopting the present invention.
8. embodiment
The R-S phase shifter drives circuit equivalent schematic diagram of prior art is such as Fig. 2, because the resistance of short circuited resistance 5 is far smaller than the impedance of phase shifter drives coil 4, so consume a large amount of electric energy when phase shifter works, simultaneously because short circuited resistance is the resistance of the loop line formed by conductive adhesive by metal wave guide cavity and metal cover board, conductive resin is subject to temperature, vibration, aging impact, resistance is very unstable, and when applying fixing driving pulsewidth or drive electric current, the phase shift of phase shifter is also very unstable.
The R-S phase shifter that phase shift is stable, the direct current resistance between metal wave guide cavity and metal cover board is greater than 0.5 ohm, then the impact of phase shift just can be ignored by the change of short circuited resistance resistance, and short-circuit dissipation just can be declined to a great extent.
During enforcement, by process meanses such as oxidation, coating, depositions, on metal wave guide cavity surface or metal cover board surface, or form an extremely thin layer insulating on the two surface simultaneously. the material of insulation layer should be that insulation is good and wear-resisting, failure of insulation is caused to ensure assembling bonding process can not damage, specific inductivity is more high more good, dielectric loss tangent is the smaller the better, the friendship interface of the bonding rear waveguide cavity of assembling and cover plate is made to form enough electrical capacitys and the extremely low electric capacity of loss, make the exchange current energy conducting smoothly that the microwave of high frequency is formed on wave guide wall, do not affect microwave transmission in the waveguide, stop low frequency driving short-circuit current to form short-circuit current in closed waveguide cavity simultaneously, equal to eliminate short circuited resistance, driving circuit equivalent schematic is such as Fig. 3, just there is not the stability problem of short circuited resistance resistance yet. overcome that R-S phase shifter phase shift is unstable, driving power consumption is excessive by this technical scheme, being difficult to realize temperature compensation three and cause it cannot the shortcoming of engineer applied simultaneously.
Described thickness of insulating layer is 0.1um-50um.
The specific inductivity of described insulating layer material is: 1-200; The dielectric loss tangent value of insulating layer material is: be less than 0.1.
Embodiment: the implementation method of the present invention is as follows:
1. at metal wave guide cavity 1 or the metal cover board 2 of Fig. 1 description, or form thin layer insulation layer on the two surface simultaneously, in the present embodiment, metal wave guide cavity 1 forms dense insulating layer by anodic oxidation;
2. must strictly control the thickness of insulation layer so that it is when satisfied insulation, the microwave transmission impact of phase shifter is minimum, the thickness of insulating layer in the present embodiment is less than 30um;
3. on the metal wave guide cavity 1 completing surface insulation process, assemble other part and the metal cover board 2 of phase shifter, must be very careful in assembling process, hinder insulation layer cause metal wave guide cavity 1 and metal cover board 2 conducting to form short circuit in order to avoid drawing;
4. in the process using conductive adhesive metal cover board 2, it is noted that avoid by conductive resin, two panels metal cover board 2 being connected;
Forming one layer of fine and close insulating oxide by sulphuric acid anodizing on metal wave guide cavity 1 in FIG, oxidated layer thickness controls between 5um to 30um, avoids drawing and hinder insulation layer and be connected two panels metal cover board 2 with conductive resin in assembling bonding process. This embodiment phase shifter phase shift is stablized, driving power consumption is only original 1/1 to four/5ths, drive the difference of electric current to drop to about 10% by original about 40% between phase shifter, it is possible to adopt unified temperature compensation circuit, the phase shift temperature factor of phase shifter is greatly improved.
Claims (4)
1. the R-S phase shifter that phase shift is stable, is characterized in that, the direct current resistance between the metal wave guide cavity of R-S phase shifter and metal cover board is greater than 0.5 ohm.
2. the R-S phase shifter that a kind of phase shift as claimed in claim 1 is stable, is characterized in that, further, on metal wave guide cavity surface or metal cover board surface or simultaneously have a layer insulating on the two surface.
3. the R-S phase shifter that a kind of phase shift as claimed in claim 1 is stable, is characterized in that, described thickness of insulating layer is 0.1um-50um.
4. the R-S phase shifter that a kind of phase shift as claimed in claim 1 is stable, is characterized in that, the specific inductivity of described insulating layer material is: 1-200; The dielectric loss tangent value of insulating layer material is: be less than 0.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410669418.1A CN105680122B (en) | 2014-11-20 | 2014-11-20 | A kind of R-S phase shifter that phase shift is stable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410669418.1A CN105680122B (en) | 2014-11-20 | 2014-11-20 | A kind of R-S phase shifter that phase shift is stable |
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| Publication Number | Publication Date |
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| CN105680122A true CN105680122A (en) | 2016-06-15 |
| CN105680122B CN105680122B (en) | 2019-03-29 |
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| CN201410669418.1A Active CN105680122B (en) | 2014-11-20 | 2014-11-20 | A kind of R-S phase shifter that phase shift is stable |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4604592A (en) * | 1984-04-19 | 1986-08-05 | The Boeing Company | Electrically controlled radio frequency tuner |
| CN1390374A (en) * | 1999-08-26 | 2003-01-08 | Arc无线解法公司 | Radio frequency connector for reducing passive inter-modulation effects |
-
2014
- 2014-11-20 CN CN201410669418.1A patent/CN105680122B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4604592A (en) * | 1984-04-19 | 1986-08-05 | The Boeing Company | Electrically controlled radio frequency tuner |
| CN1390374A (en) * | 1999-08-26 | 2003-01-08 | Arc无线解法公司 | Radio frequency connector for reducing passive inter-modulation effects |
Non-Patent Citations (2)
| Title |
|---|
| 王相元: "《Reggia-Spencer 相移器的研究》", 《南京大学学报（物理报）》 * |
| 陶巍巍等: "《薄壁钛合金Reggia-Spencer移相器的结构实现》", 《现代雷达》 * |
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| CN105680122B (en) | 2019-03-29 |
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