CN101150216A - Electric tuning high-temperature super-conductive filter - Google Patents
Electric tuning high-temperature super-conductive filter Download PDFInfo
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- CN101150216A CN101150216A CNA2007101501178A CN200710150117A CN101150216A CN 101150216 A CN101150216 A CN 101150216A CN A2007101501178 A CNA2007101501178 A CN A2007101501178A CN 200710150117 A CN200710150117 A CN 200710150117A CN 101150216 A CN101150216 A CN 101150216A
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- screw rod
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Abstract
This invention relates to a high temperature superconducting filter tuned electrically including a shielding box, a substrate and a resonator made of superconducting films on it, a screw plugged from the top cover of the shield box and fixed on the cover and an electric tuned variable-capacitance diode installed at the bottom, above the tuners and close to the resonator, the lead of the diode is led by the screw to control external voltage, and the capacitance value of the diode can be changed in a wide sphere, so this invention includes wide tuned sphere, besides, the structure is stable since the screw is fixed on the top cover.
Description
[technical field]: the invention belongs to electronic technology field, particularly a kind of electric tuning high-temperature super-conductive filter is a kind of microwave passive component.
[background technology]: the tunable microwave filter has important use in communication, Radar Technology field and is worth, this be because: the variation of (1) mismachining tolerance and working environment parameter, can cause the centre frequency of filter to produce drift, performance changes, and this just requires filter to have certain tunability; (2) some special purposes especially Military Application require microwave filter can be operated in different frequencies, and require microwave filter can have frequency adjustable rapidly.
High temperature superconduction wave filter because have extremely low insertion loss, high band is outer suppresses and good sideband characteristic, have a wide range of applications at aspects such as mobile communication, satellite communication and military electronics.The tuning method that mainly still adopts mechanical tuning at present of high temperature superconduction wave filter.In order not to be subjected to the influence of factors such as operational environment and electromagnetic compatibility, high temperature superconduction wave filter all is encapsulated in metallic shield box the inside.The basic principle of mechanical tuning high temperature superconduction wave filter is the top that the loam cake that adopts the tuning screw rod 11 of metal or medium to pass shielding box 12 is inserted into the high-temperature superconductor resonator 14 that is positioned on the substrate 13, as shown in Figure 1.The insertion of screw rod has changed the Electric Field Distribution of high-temperature superconductor resonator top, and being equivalent to has increased an additional capacitor in the equivalent electric circuit of high-temperature superconductor resonator, thus the resonance frequency that can regulate resonator.Its tuning range is controlled by the degree of depth that tuning screw rod inserts.
The mechanical tuning high temperature superconduction wave filter exists several technological difficulties or defective.The first, tuning screw rod is loosening easily in the thermal cycle process of normal temperature-refrigeration, and its position changes easily, thereby the performance of high temperature superconduction wave filter is changed; The second, tuning screw rod is not easy to regulate under the desired cryogenic conditions of high temperature superconduction wave filter work, and tuning range is very limited; Three, mechanical tuning rate is very slow, and need be used for tuning special refrigerating plant etc.
On basis to the technological improvement of mechanical tuning high temperature superconduction wave filter, the invention discloses a kind of technical scheme of electric tuning super conductive filter, solved the defective of prior art.
[summary of the invention]: the objective of the invention is to solve the prior art above shortcomings, a kind of electric tuning high-temperature super-conductive filter be provided, make its have tuning fast, tuning range is big, characteristics such as good stability.
Electric tuning high-temperature super-conductive filter provided by the invention comprises shielding box, the substrate of shielding box inner bottom part and the resonator of upward being made by superconducting thin film thereof; Its lower end be equipped with screw rod that electric modulation holds diode by the loam cake of shielding box insert and be fixed on shielding box on cover, each electric modulation holds diode and is positioned at the top of each resonator of filter and is close to resonator, the lead-in wire of variable capacitance diode is drawn by screw rod, is used for external control voltage.This electric tuning high-temperature super-conductive filter is to have held diode having increased the electric modulation that is positioned at electric field the inside above each resonator in the structure of conventional high-temperature super conductive filter, and its position fixes by being fixed in the screw rod that covers on the shielding box.
The material of described screw rod can be metal or medium.Screw rod by perforation be fixed in shielding box on cover, fixing mode can be rivet, weld, nut is fixed or use screw lock.
Described screw rod is a hollow screw, and electric modulation holds two lead-in wires of diode and draws from screw rod.Also can draw from screw rod by a lead-in wire, another root bead is connected on the screw rod and ground connection.
Advantage of the present invention and good effect:
(1) because electric modulation holds the changing value that the electric capacity of diode has broad, thereby this type of electric tuning high-temperature super-conductive filter has the tuning range of broad, and is voltage tuning, and its tuned speed is fast; (2) screw rod of this type of electrically tunable filter welding or rivet covers on filter shielding box, and Stability Analysis of Structures has avoided tuning screw rod in the mechanical tuning high temperature superconduction wave filter to be difficult for fixing, loosening technological deficiency easily.(3) this type of electrically tunable filter be convenient to regulate, good reproducibility, in stable condition, the technological deficiency that overcome the mechanical tuning super conductive filter.In addition, this type of electrically tunable filter also has the processing characteristic of simple.
[description of drawings]:
Fig. 1 is the schematic diagram (end view) of the tuning high temperature superconduction wave filter of existing machinery; The 11 tuning screw rods that are, 12 is shielding box, and 13 is the substrate of high temperature superconduction wave filter, and 14 are the high-temperature superconductor resonator (i.e. the micro-strip resonantor of being made by high-temperature superconducting thin film) on the substrate.
Fig. 2 is the schematic diagram (end view) of electric tuning high-temperature super-conductive filter disclosed in this invention; 21 is shielding box, and 22 is the substrate of high temperature superconduction wave filter, and 23 is the resonator on the substrate, and 24 is screw rod, and 25 is that electric modulation holds diode, and 26 is the lead-in wire that electric modulation holds diode.
Fig. 3 is the schematic diagram (end view) of electric tuning high-temperature super-conductive filter of another structure on 4 rank for progression disclosed in this invention; 31 is that electric modulation holds diode, and 32 is the substrate of super conductive filter; 33 is that electric modulation holds the spacing between diode and the resonator, and 34 for being welded on the lead-in wire on the screw rod.
Fig. 4 is the schematic diagram (vertical view) of its high temperature superconductor circuit of electric tuning high-temperature super-conductive filter on 4 rank for progression disclosed in this invention; 41 is half lump micro-strip resonantor in the superconducting circuit, and 42 is the little band of input in the superconducting circuit, and 43 is the little band of output in the superconducting circuit, and 44 is the residing position of openend varactor of resonator.
[embodiment]:
Embodiment 1:
As shown in Figure 2, the basic structure of the present invention electric modulation that comprises shielding box 21, be positioned at resonator 23 on shielding box substrate of bottom portion 22 and the substrate, inserted and be fixed on the screw rod 24 that covers on the shielding box and be fixed in the screw rod lower end by the shielding box loam cake holds diode 25.Variable capacitance diode is positioned at the top of resonator and is close to resonator, and the lead-in wire 26 of variable capacitance diode is drawn in screw rod, is used for external control voltage; Each resonator top of this filter 23 all comprises such screw rod and variable capacitance diode.Increase the electric modulation that is fixed in each resonator top by screw rod and is close to resonator by the loam cake of shielding box in the structure of this electric tuning high-temperature super-conductive filter and held diode, each variable capacitance diode is positioned in the electric field of resonator top, it is equivalent to has increased an additional capacitor in the equivalent electric circuit of resonator, the voltage at adjusting variable capacitance diode two ends just can change the size than capacitance, thereby reaches the purpose of the resonance frequency of regulating each resonator.
The material of the screw rod that is comprised in above-mentioned its structure of said electric tuning high-temperature super-conductive filter be metal or medium, screw rod is inserted by the perforation of shielding box loam cake, and be fixed in shielding box on cover, fixed form is for welding, rivet or adopt nut check.
The electric modulation that is comprised in above-mentioned its structure of said electric tuning high-temperature super-conductive filter holds diode and is fixed in the screw rod lower end by welding or bonding mode; Two lead-in wires of variable capacitance diode can be drawn (see figure 2) in screw rod, also can only draw one, and another root bead is connected on and is used for the ground connection (see figure 3) on the screw rod.
Embodiment 2:
As shown in Figure 3, the electric tuning high-temperature super-conductive filter that present embodiment provides, its basic structure is with embodiment 1, and its difference only is that a lead-in wire 34 that electric modulation holds diode 31 is welded on and is used for ground connection on the screw rod.
The material of the substrate 32 of the superconducting circuit filter of above-mentioned filter is the thick LaAlO3 monocrystalline of 0.5mm; Superconducting film material is Tl2Ba2CaCu2O8, the progression of filter is quadravalence, be with 42 and export and littlely be with 43 to constitute by four and half lump micro-strip resonantors 41, input are little, dimension of picture is 26mm * 18mm, as shown in Figure 4, variable capacitance diode is positioned at the top of each resonator openend 44, shown in frame of broken lines among the figure.
The shielding box of above-mentioned said filter is the oxygen-free copper square box of 4mm thickness, external dimensions be 34mm length * 26mm wide * the 15mm height, the box upper cover thickness is 5mm; The filter port is connected by the SMA microwave junction.
The screw rod of above-mentioned said filter is a tubular shape, and internal diameter is 1.8mm, and external diameter is 3mm;
Material is a brass, and length is 11mm; Screw rod is inserted by shielding box loam cake perforation, with indium be weldingly fixed on shielding box on cover.
Electric modulation in the above-mentioned said filter holds diode and is welded in the screw rod lower end with indium, and the lower surface of varactor and the spacing of superconducting resonator 33 are less than 1mm, to guarantee in its electric field that can be in resonator; A lead-in wire of varactor is drawn from screw rod, and another lead-in wire 34 usefulness indiums are welded on and form ground connection on the screw rod.
Claims (4)
1. electric tuning high-temperature super-conductive filter, comprise shielding box, the resonator of making by superconducting thin film on the substrate of shielding box inner bottom part and the substrate, it is characterized in that its lower end be equipped with screw rod that electric modulation holds diode by the loam cake of shielding box insert and be fixed on shielding box on cover, each electric modulation holds diode and is positioned at the top of each resonator of filter and is close to resonator, the lead-in wire of variable capacitance diode is drawn by screw rod, is used for external control voltage.
2. electric tuning high-temperature super-conductive filter according to claim 1, the material that it is characterized in that screw rod are metal or medium.
3. electric tuning high-temperature super-conductive filter according to claim 1 and 2 is characterized in that described screw rod is a hollow screw, and electric modulation holds two lead-in wires of diode and draws from screw rod.
4. electric tuning high-temperature super-conductive filter according to claim 1 and 2 is characterized in that described screw rod is a hollow screw, and electric modulation holds a lead-in wire of diode draws from screw rod, and another root bead is connected on the screw rod and ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101501178A CN101150216A (en) | 2007-11-09 | 2007-11-09 | Electric tuning high-temperature super-conductive filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101501178A CN101150216A (en) | 2007-11-09 | 2007-11-09 | Electric tuning high-temperature super-conductive filter |
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| Publication Number | Publication Date |
|---|---|
| CN101150216A true CN101150216A (en) | 2008-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101501178A Pending CN101150216A (en) | 2007-11-09 | 2007-11-09 | Electric tuning high-temperature super-conductive filter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403556A (en) * | 2010-09-10 | 2012-04-04 | 中国科学院物理研究所 | Tunable superconducting filter, and manufacturing method and metal shielding box of tunable superconducting filter |
| CN102437403A (en) * | 2011-08-03 | 2012-05-02 | 华为技术有限公司 | Resonance rod and duplexer |
| CN105934143A (en) * | 2016-04-29 | 2016-09-07 | 南京航空航天大学 | Adjustable electromagnetic shielding cover and radio frequency circuit optimization method |
-
2007
- 2007-11-09 CN CNA2007101501178A patent/CN101150216A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403556A (en) * | 2010-09-10 | 2012-04-04 | 中国科学院物理研究所 | Tunable superconducting filter, and manufacturing method and metal shielding box of tunable superconducting filter |
| CN102437403A (en) * | 2011-08-03 | 2012-05-02 | 华为技术有限公司 | Resonance rod and duplexer |
| CN105934143A (en) * | 2016-04-29 | 2016-09-07 | 南京航空航天大学 | Adjustable electromagnetic shielding cover and radio frequency circuit optimization method |
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| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20080326 |
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