Antenna for a fill level radar for applications involving high temperatures and/or high pressures
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01S-013/08
G01S-007/02
G01F-023/284
H01Q-001/00
G01S-013/00
출원번호
UP-0105564
(2008-04-18)
등록번호
US-7804446
(2010-10-21)
우선권정보
DE-10 2007 026 389(2007-06-06)
발명자
/ 주소
Kienzle, Klaus
Fehrenbach, Josef
Deck, Thomas
Schultheiss, Daniel
Motzer, Jürgen
출원인 / 주소
Vega Grieshaber KG
대리인 / 주소
Fay Kaplun & Marcin, LLP
인용정보
피인용 횟수 :
2인용 특허 :
16
초록▼
An antenna for a fill level radar includes a high-temperature process separation device and an attenuation element. The attenuation element is used to improve the measuring signal in the near zone of the antenna and is affixed to the process separation device or in the process separation device. In
An antenna for a fill level radar includes a high-temperature process separation device and an attenuation element. The attenuation element is used to improve the measuring signal in the near zone of the antenna and is affixed to the process separation device or in the process separation device. In this way antenna ringing may be significantly reduced.
대표청구항▼
What is claimed is: 1. An antenna for a fill level radar for measuring the fill level in a tank, comprising: a separation device providing a seal between an interior of the tank and an exterior of the tank, the separation device being for at least one of high-temperature applications and high-press
What is claimed is: 1. An antenna for a fill level radar for measuring the fill level in a tank, comprising: a separation device providing a seal between an interior of the tank and an exterior of the tank, the separation device being for at least one of high-temperature applications and high-pressure applications; and an attenuation element reducing an unwanted signal passing through the attenuation element, the unwanted signal being a component of a wanted measurement signal, the component being reflected within the antenna; wherein the attenuation element is one of (a) affixed to the separation device and (b) arranged in the separation device. 2. The antenna according to claim 1, wherein the separation device is designed on a ceramic material basis. 3. The antenna according to claim 1, wherein the separation device is composed of aluminium oxide. 4. The antenna according to claim 1, wherein the attenuation element at least partially encloses the separation device. 5. The antenna according to claim 1, wherein the attenuation element is an encasing of the separation device. 6. The antenna according to claim 1, wherein the separation device comprises a cylindrical region; and wherein the attenuation element is arranged in the cylindrical region of the separation device. 7. The antenna according to claim 1, wherein the separation device comprises a conical region; and wherein the attenuation element is arranged in the conical region. 8. The antenna according to claim 1, wherein the tank comprises an interior region; wherein the separation device comprises a first transition region to the atmosphere on a side of the separation device, which side points towards the interior region of the tank; and wherein the attenuation element is arranged in this transition region. 9. The antenna according to claim 1, wherein the tank comprises an exterior region; wherein the separation device comprises a second transition region to the atmosphere on a side of the separation device, which side points towards the exterior region of the tank; and wherein the attenuation element is arranged in this transition region. 10. The antenna according to claim 1, wherein the separation device comprises a first region and a second region that is divided off from the first region; and wherein the attenuation element is arranged between the two regions. 11. The antenna according to claim 1, wherein the separation device comprises a first region and a second region that is divided off from the first region; and wherein at least the first region comprises a hole in which the attenuation element is arranged. 12. The antenna according to claim 1, wherein the attenuation element is composed of a carbon material including carbon fibers as an attenuation material. 13. The antenna according to claim 12, wherein the carbon material is a textile fabric. 14. The antenna according to claim 12, wherein the carbon material comprises sections; and wherein the carbon material is reinforced or protected, at least in some of the sections, by treatment with a high-temperature adhesive or with a sodium silicate solution. 15. The antenna according to claim 12, wherein the carbon material comprises sections; and wherein the carbon material is reinforced or protected, at least in some of the sections, by treatment with a cement. 16. The antenna according to claim 1, wherein the attenuation element comprises a magnetic absorber as an attenuation material. 17. The antenna according to claim 16, wherein the magnetic absorber is a thin ferrite disc. 18. The antenna according to claim 16, wherein the magnetic absorber comprises at least one material selected from the group comprising lithium-titanium-zinc-ferrite, nickel-chromium-zinc-ferrite, and aluminium-holmium-ferrite. 19. The antenna according to claim 16, wherein the magnetic absorber comprises sections; and wherein the magnetic absorber is, at least in one section of the sections, one of strengthened and protected by treatment involving at least one of a high-temperature adhesive, a sodium silicate solution and a cement. 20. The antenna according to claim 1, wherein the antenna is designed for application at frequencies of one of 6.3 gigahertz and 26 gigahertz. 21. The antenna according to claim 1, wherein the antenna is designed for application at temperatures exceeding 400.degree. C. 22. A fill level radar, comprising: an antenna including (a) a separation device providing a seal between an interior of the tank and an exterior of the tank, the separation device being for at least one of high-temperature applications and high-pressure applications and (b) an attenuation element reducing an unwanted signal passing through the antenna, the unwanted signal being a component of a wanted measurement signal, the component being reflected within the antenna, the attenuation element being one of (a) affixed to the separation device and (b) arranged in the separation device.
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이 특허에 인용된 특허 (16)
Schubert Rolf (Absteinach DEX) Krner Christian (Weinheim-Rippenweiher DEX), Absorber for electromagnetic and acoustic waves.
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Dalrymple Thomas H. (Crown Point IN) Jean Buford R. (Round Rock TX) Erb Tom L. (Austin TX) Whitehead Frederick L. (Austin TX), Method and apparatus for monitoring a flowable material in a transportable vessel.
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