CN1050305C - Microwave radiator - Google Patents
Microwave radiator Download PDFInfo
- Publication number
- CN1050305C CN1050305C CN95105293A CN95105293A CN1050305C CN 1050305 C CN1050305 C CN 1050305C CN 95105293 A CN95105293 A CN 95105293A CN 95105293 A CN95105293 A CN 95105293A CN 1050305 C CN1050305 C CN 1050305C
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- coaxial line
- radiator
- choke
- present
- outer conductor
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Abstract
The present invention relates to a microwave radiator for heating lossy media, which is composed of a primary radiation conductor, a choking device, a soft coaxial line, a casing tube, a rear cover, etc. In the present invention, the diameter of the radiator is increased to obtain the characteristic of wide frequency band impedance on the basis of a coaxial half-wave vibrator antenna; the length of the radiator is appropriately adjusted so as to be adapted to the wavelength shortened effect; a hard coaxial line is used in the choking device for preventing the backward radiation of energy along a feed line, and consequently, the energy is concentrated at the head part of the microwave radiator so as to be radiated with high efficiency. The design of the present invention results in uniform and reasonable field distribution so that the whole radiator has the advantages of small loss and high efficiency.
Description
The invention belongs to a kind of medical apparatus and instruments, especially relate to a kind of microwave radiometer that is used to heat lossy dielectric.
Along with the extensive use of microwave at bioengineering field, the microwave radiometer technology seems and becomes more and more important, propagation characteristic in view of microwave, in major applications in the past, the microwave radiometer general work is in the free space that does not have consumption, and the far zone field of major concern microwave radiometer, and in most biological engineering is used, mainly utilize the near region and the nearly far zone field of microwave radiometer, biological tissue is generally lossy dielectric and medium parameter is very unstable, particularly biological tissue is near microwave radiometer, impedance and field distribution to microwave radiometer bring considerable influence, present microwave radiometer both domestic and external has monopole, various ways such as spiral, the monopolar type irradiator, it can only be gone up on one point and concentrate radiation, efficient is low, and spiral irradiator is because the spiral distance, the parameter of spiral line length and reflector is unreasonable, so its swept area is little, and efficient is low.Through the domestic Searches of Patent Literature, reported a kind of microwave radiometer, there is the impedance operator difference in it and shortcoming such as frequency band is narrow, field distribution is unreasonable, cause when using, feeder line and microwave radiometer heating itself is more serious, and energy can not be radiated in the biological tissue effectively and go, thus, these existing irradiators owing to structure, off size reason, therefore have certain limitation in application.
The object of the present invention is to provide a kind of field distribution evenly reasonable, emittance can concentrate on microwave radiometer stem and microwave radiometer that can the broadband efficiency operation.
Technical solution of the present invention is: a kind of by the primary radiation conductor, choke, sleeve pipe, the microwave radiometer that bonnet etc. are formed, it is characterized in that: the heart yearn oscillator 1 that the primary radiation conductor adopts is to be made by a bonding jumper, it connects with the heart yearn of hard coaxial line 2, and hard coaxial line 2, outer conductor 3, welding ring 4 have been formed choke, and outer conductor 3 is connected with hard coaxial line 2 by welding ring 4.
The present invention is based on the coaxial half-wave element antenna, the diameter of Enhanced Radiation Reduced Blast body is to obtain the broadband impedance operator, suitably adjust radiant body length to adapt to the wavelength decreases effect, choke adopts hard coaxial line can stop energy along feeder line radiation backward, so concentration of energy radiate efficiently in the microwave radiometer stem.
Because the present invention has adopted improved monopole antenna, broadening emission band, choke adopts hard coaxial line to reduce power loss, this design field distribution is evenly reasonable, whole radiator loss is very little, the efficient height has solved the phenomenon that microwave device feeder line and microwave device itself when using generate heat.
Accompanying drawing 1 is the structural representation of microwave radiometer of the present invention.
Below in conjunction with drawings and Examples the present invention is described in detail.
With reference to accompanying drawing 1, microwave radiometer is made up of heart yearn oscillator 1, hard coaxial line 2, choke outer conductor 3, choke welding ring 4, caxial-line feeder 5, soft coaxial line 6, irradiator sleeve pipe 7 and irradiator sleeve pipe bonnet 8.Heart yearn oscillator 1 usefulness copper bar is made, in of the heart yearn welding of aperture of copper bar centre drill with hard coaxial line 2, choke outer conductor 3 has connected to form choke by choke welding ring 4 and hard coaxial line 2, and its effect is to stop energy to the radiation of irradiator rear portion effectively.The heart yearn of hard coaxial line 2 and the welding of the heart yearn of soft coaxial line 6, caxial-line feeder 5 is the copper pipes that internal diameter is 4mm, copper pipe is enclosed within on the welding section, one end of adapter 5 welds with the crust of hard coaxial line 2, the other end evenly wraps in the outside of adapter 5 with the copper mesh of coaxial cable 6 and welds, add irradiator sleeve pipe 7 and sleeve pipe bonnet 8 at irradiator, constituted a microwave radiometer.The diameter of heart yearn oscillator 1 is 2～20 times of core line diameter of hard coaxial line 2, and length is less than 1/4th centre wavelength L
1A certain length L
2, purpose is that irradiator is mated best at mid frequency, can calculate L according to formula (1) and (2)
1And L
2Length:
L
1＝C
0/F
0 (1)
L
2＝C
0/F
0×(0.2～0.245) (2)
C wherein
0Be the airborne light velocity,
F
0It is the operating frequency of irradiator.
The length of the outer conductor of the hard coaxial line 2 that exposes from choke outer conductor 3 opening parts is identical with the length of heart yearn oscillator 1, the length of choke outer conductor 3 is got 1/4th of centre wavelength, if fill loss-free dielectric between choke outer conductor 3 and the hard coaxial line 2, then the length of choke outer conductor 3 is got centre wavelength
Doubly, the diameter of choke outer conductor 3 should be not less than 1.5 times of outer conductor diameter of hard coaxial line 2, the purpose of using hard coaxial line is to make the characteristic impedance of choke keep stable, to the requirement of choke outer conductor 3 diameters be for the characteristic impedance that makes choke enough big.
Claims (1)
1. one kind by the primary radiation conductor, choke, and sleeve pipe (7), the microwave radiometer that bonnet (8) etc. are formed is characterized in that; The heart yearn oscillator (1) that the primary radiation conductor adopts is to be made by a bonding jumper, it connects with the heart yearn of hard coaxial line (2), hard coaxial line (2), outer conductor (3), welding ring (4) have been formed choke, outer conductor (3) is connected with hard coaxial line (2) by welding ring (4), the diameter of heart yearn oscillator (1) is 2～20 times of core line diameter of hard coaxial line (2), and the diameter of choke outer conductor (3) is more than 1.5 times of hard coaxial line (2) outer conductor diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95105293A CN1050305C (en) | 1995-05-17 | 1995-05-17 | Microwave radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95105293A CN1050305C (en) | 1995-05-17 | 1995-05-17 | Microwave radiator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1135923A CN1135923A (en) | 1996-11-20 |
| CN1050305C true CN1050305C (en) | 2000-03-15 |
Family
ID=5075449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95105293A Expired - Fee Related CN1050305C (en) | 1995-05-17 | 1995-05-17 | Microwave radiator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1050305C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4979280B2 (en) * | 2006-06-19 | 2012-07-18 | パナソニック株式会社 | Microwave heating device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058151A (en) * | 1990-08-09 | 1992-01-29 | 天津大学 | Screw medical microwave radiator |
| CN1029508C (en) * | 1991-12-30 | 1995-08-16 | 天津市第二中心医院 | Microwave rradiator for cerebroma operation |
-
1995
- 1995-05-17 CN CN95105293A patent/CN1050305C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058151A (en) * | 1990-08-09 | 1992-01-29 | 天津大学 | Screw medical microwave radiator |
| CN1029508C (en) * | 1991-12-30 | 1995-08-16 | 天津市第二中心医院 | Microwave rradiator for cerebroma operation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1135923A (en) | 1996-11-20 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN ANKE HI-TECH CO., LTD. Free format text: FORMER NAME OR ADDRESS: SHENZHEN ANKE HIGH TECH. CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Patentee after: Anke High-Tech Co., Ltd., Shenzhen City Patentee before: Anke High Technology Co., Ltd., Shenzhen |
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| PP01 | Preservation of patent right |
Effective date of registration: 20070927 Pledge (preservation): Preservation |
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| PD01 | Discharge of preservation of patent |
Date of registration: 20071121 Pledge (preservation): Preservation |
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| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN RUIFUTAI ELECTRONIC TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHENZHEN ANKE HI-TECH CO., LTD. Effective date: 20090424 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20090424 Address after: Shenzhen City, Guangdong Province, Nanshan District East Road No. 29 building fifth layer green cloud Patentee after: Shenzhen Rui Fu Tai Electronic Technology Co., Ltd. Address before: No. 3, Mount Shun Road, Shekou, Guangdong, Shenzhen Patentee before: Anke High-Tech Co., Ltd., Shenzhen City |
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| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN CITY TESHEN ELECTRIC APPLICANCE CO., LTD. Free format text: FORMER OWNER: SHENZHEN RUIFUTAI ELECTRONIC TECHNOLOGY CO., LTD. Effective date: 20090731 |
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Effective date of registration: 20090731 Address after: Shenzhen City, Guangdong Province, Nanshan District East Road No. 29 building third layer green cloud Patentee after: Shenzhen RF Tech Co., Ltd. Address before: Shenzhen City, Guangdong Province, Nanshan District East Road No. 29 building fifth layer green cloud Patentee before: Shenzhen Rui Fu Tai Electronic Technology Co., Ltd. |
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Granted publication date: 20000315 Termination date: 20140517 |