WO2011064157A1 - Dispositif de protection contre la foudre d'un récepteur d'antenne et avion le comportant - Google Patents
Dispositif de protection contre la foudre d'un récepteur d'antenne et avion le comportant Download PDFInfo
- Publication number
- WO2011064157A1 WO2011064157A1 PCT/EP2010/067891 EP2010067891W WO2011064157A1 WO 2011064157 A1 WO2011064157 A1 WO 2011064157A1 EP 2010067891 W EP2010067891 W EP 2010067891W WO 2011064157 A1 WO2011064157 A1 WO 2011064157A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coaxial cable
- antenna
- printed circuit
- capacitance
- receiver
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Definitions
- the present invention relates to a protection device, against lightning, antennas receivers in an aircraft and an aircraft comprising it.
- the present invention applies, particularly to aircraft whose fuselage comprises electrically insulating materials, including composite materials.
- the present invention aims to remedy these disadvantages.
- a high-pass filter mounted in series with this shield adapted to limit the low-frequency energy flowing on said coaxial cable, having a capacity of at least one nF and an inductance of less than one ohm for the frequency; lower implementation by said receiver, said capacitor being formed of at least one layer of conductive material buried in a printed circuit.
- the capacitance thus has a sufficiently low impedance in the frequency range of the antenna so as not to introduce an undesirable stationary wave ratio, and supports voltage levels higher than 1 KV.
- a capacity corresponds to a high impedance at low frequencies and a low impedance at high frequencies.
- a capacitance carried out using a discrete component can hardly meet these two requirements simultaneously because the components accepting these voltages are relatively bulky and thus have a strongly inductive behavior at these frequencies, which would introduce a stationary wave ratio ( TOS) not insignificant.
- TOS stationary wave ratio
- a miniature capacitor of the CMS type with a weakly inductive behavior can not accept high voltage levels.
- a capacitance introducing an inductance (intrinsic inductance to the component added to that introduced by the routing) of 3 nH represents an impedance of two ohms at 100 MHz (CMS component).
- the printed circuit comprises at least one layer of high permeability material sandwiched between two layers of conductive material.
- the printed circuit comprises several layers of high permittivity material sandwiched between layers of conducting material, mounted in series.
- this series capacitance configuration transforms the current constraint in the receiver into a voltage constraint across the capacitance.
- the thickness of the capacity between its reinforcements is greater than four microns. According to particular characteristics, the surface of the reinforcements of the capacity is greater than one square centimeter.
- said capacitance is integrated in a connector of the coaxial cable.
- said capacitance is integrated in said coaxial cable.
- the present invention is an aircraft comprising at least one antenna and at least one lightning protection device of a receiver of a said antenna as briefly described above.
- FIG. 1 schematically represents a particular embodiment of an aircraft that is the subject of the present invention, comprising a plurality of lightning protection devices that are the subject of the present invention
- FIG. 2 represents, schematically, a particular embodiment. of a lightning protection device object of the present invention
- Figures 3 to 8 show impedance curves as a function of frequencies.
- FIG. 1 shows an aircraft 10 comprising antennas 15, antenna signal receivers 20 and lightning protection devices 25.
- the lightning protection device 25 is based on a printed circuit, or PCB (acronym for "Printed Circuit Board") 30.
- FIG. 2 shows an antenna signal coaxial cable 35 having a conductive outer shield 40 and a core 45 connected to an antenna 15. This cable 35 is connected to the printed circuit 30 by a connector 85. the other side of the printed circuit 30, a connector 80 connects the printed circuit 30 to a coaxial cable 65 of antenna signal output whose other end is connected to an antenna signal receiver 20.
- the coaxial cable 65 has a conductive outer shield 70 and a core 75.
- the printed circuit 30 has two ground planes 50 and 55 which are layers of brass.
- the masses of the connectors 80 and 85 are electrically connected, respectively to the ground planes 55 and 50, via vias, that is to say metallized orifices.
- the printed circuit comprises a layer of material with high permeability sandwiched between two layers of copper, for example, of the "C-ply" type (registered trademark) with a relative permittivity ⁇ ⁇ greater than four and, preferably, approximately equal to 16.
- L The thickness e of the printed circuit between the ground planes is greater than four microns and preferably between eight and sixteen microns.
- the capacitance is formed by several layers of high-permittivity material sandwiched between electrically conductive planes, connected in series, in order to distribute the stress in tension on the different layers.
- this series capacitance configuration transforms the current constraint in the receiver into a voltage constraint across the capacitance.
- S is the surface of the frames, here are the ground planes.
- the non-inductive behavior of the device makes it possible to maintain an impedance of less than 1 Ohm, which makes it possible to limit the stationary wave ratio.
- the impedances illustrated in FIG. 5 are obtained with a capacity of 100 pF. In this case, the value of the capacity is too low because it is too influential around 100 MHz.
- the impedance illustrated in FIG. 6 is obtained with a capacitance of 100 nF.
- Figure 7 shows, more precisely, the curve of Figure 6 around the 300 MHz frequency.
- the characteristic impedance of the cable is 50.6 Ohms, which corresponds to 34.08 dBOhm. With this capacitance value, the impedance variation is at most +/- 0.1 dBOhm, which corresponds to 1 Ohm or 2% of the characteristic impedance.
- the oscillations after 100 MHz are due to the fact that the cable does not perfectly preserve an impedance of 50 Ohms at all the frequencies. Thus, the oscillations observed in the presence of the filtering capacity of the device 25 are not due to it.
- the device 25 produces a high-pass filter connected in series with the coaxial cable shield, adapted to limit the low-frequency energy flowing on the coaxial cable. It has a capacity of at least one nF and one inductor less than one ohm for the lowest frequency implemented by the antenna signal receiver, here 30 MHz. The device 25 thus has a sufficiently low impedance in the frequency range of the antenna for not introducing an undesirable stationary wave ratio. The device 25 also supports voltage levels higher than 1 KV.
Landscapes
- Details Of Aerials (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Emergency Protection Circuit Devices (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2781783A CA2781783A1 (fr) | 2009-11-24 | 2010-11-22 | Dispositif de protection contre la foudre d'un recepteur d'antenne et avion le comportant |
EP10779553.6A EP2504883B1 (fr) | 2009-11-24 | 2010-11-22 | Dispositif de protection contre la foudre d'un récepteur d'antenne et avion le comportant |
US13/511,194 US9941583B2 (en) | 2009-11-24 | 2010-11-22 | Lightning protection device for an antenna receiver, and aircraft comprising same |
CN201080060406.9A CN102884678B (zh) | 2009-11-24 | 2010-11-22 | 天线接收器防雷保护装置和包括该装置的飞机 |
BR112012012501A BR112012012501A2 (pt) | 2009-11-24 | 2010-11-22 | dispositivo de proteção de relâmpagos para um receptor de antenas, e aeronaves compreendendo o mesmo |
ES10779553.6T ES2535016T3 (es) | 2009-11-24 | 2010-11-22 | Dispositivo de protección contra el rayo de un receptor de antena y avión que lo incluye |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0958311A FR2953069B1 (fr) | 2009-11-24 | 2009-11-24 | Dispositif de protection contre la foudre d'un recepteur d'antenne et avion le comportant |
FR0958311 | 2009-11-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011064157A1 true WO2011064157A1 (fr) | 2011-06-03 |
Family
ID=42270472
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/067891 WO2011064157A1 (fr) | 2009-11-24 | 2010-11-22 | Dispositif de protection contre la foudre d'un récepteur d'antenne et avion le comportant |
Country Status (8)
Country | Link |
---|---|
US (1) | US9941583B2 (fr) |
EP (1) | EP2504883B1 (fr) |
CN (1) | CN102884678B (fr) |
BR (1) | BR112012012501A2 (fr) |
CA (1) | CA2781783A1 (fr) |
ES (1) | ES2535016T3 (fr) |
FR (1) | FR2953069B1 (fr) |
WO (1) | WO2011064157A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2631672A1 (fr) * | 2012-02-22 | 2013-08-28 | Honeywell International Inc. | Structure d'altimètre de radar d'aéronef |
US8866667B2 (en) | 2012-02-22 | 2014-10-21 | Honeywell International Inc. | High sensitivity single antenna FMCW radar |
US9660605B2 (en) | 2014-06-12 | 2017-05-23 | Honeywell International Inc. | Variable delay line using variable capacitors in a maximally flat time delay filter |
US10018716B2 (en) | 2014-06-26 | 2018-07-10 | Honeywell International Inc. | Systems and methods for calibration and optimization of frequency modulated continuous wave radar altimeters using adjustable self-interference cancellation |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10118712B2 (en) * | 2011-08-17 | 2018-11-06 | The Boeing Company | Electrical conductor pathway system and method of making the same |
CN106458334A (zh) | 2014-03-28 | 2017-02-22 | 庞巴迪公司 | 用于飞机天线航空电子装置的防雷保护 |
CN104465259B (zh) * | 2014-12-22 | 2017-01-04 | 上海电器陶瓷厂有限公司 | 一种油浸式熔断器底座的屏蔽结构 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4513338A (en) * | 1984-02-01 | 1985-04-23 | The United States Of America As Represented By The Secretary Of The Army | Whip antenna high voltage protection device |
EP0633622A1 (fr) * | 1993-07-08 | 1995-01-11 | State Of Israel - Ministry Of Defence | Protection contre la foudre pour des systèmes d'antenne |
US6366251B1 (en) * | 1999-05-13 | 2002-04-02 | The State Of Israel, Atomic Energy Commission, Soreq Nuclear Research Center | Antenna protection device |
EP2073305A1 (fr) * | 2007-12-21 | 2009-06-24 | Krauss-Maffei Wegmann GmbH & Co. KG | Dispositif de protection contre la foudre sur la structure d'un véhicule, en particulier une antenne de véhicule |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4985800A (en) * | 1989-10-30 | 1991-01-15 | Feldman Nathan W | Lighting protection apparatus for RF equipment and the like |
US5939766A (en) * | 1996-07-24 | 1999-08-17 | Advanced Micro Devices, Inc. | High quality capacitor for sub-micrometer integrated circuits |
JP3495727B2 (ja) * | 2001-11-07 | 2004-02-09 | 新光電気工業株式会社 | 半導体パッケージおよびその製造方法 |
CN101197468B (zh) * | 2007-12-10 | 2011-06-08 | 华为技术有限公司 | 一种天线和一种基站系统 |
US20090322147A1 (en) * | 2008-05-01 | 2009-12-31 | Cooney Daniel E | Aircraft with isolated ground |
-
2009
- 2009-11-24 FR FR0958311A patent/FR2953069B1/fr active Active
-
2010
- 2010-11-22 BR BR112012012501A patent/BR112012012501A2/pt not_active IP Right Cessation
- 2010-11-22 US US13/511,194 patent/US9941583B2/en active Active
- 2010-11-22 EP EP10779553.6A patent/EP2504883B1/fr active Active
- 2010-11-22 WO PCT/EP2010/067891 patent/WO2011064157A1/fr active Application Filing
- 2010-11-22 CA CA2781783A patent/CA2781783A1/fr not_active Abandoned
- 2010-11-22 CN CN201080060406.9A patent/CN102884678B/zh active Active
- 2010-11-22 ES ES10779553.6T patent/ES2535016T3/es active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4513338A (en) * | 1984-02-01 | 1985-04-23 | The United States Of America As Represented By The Secretary Of The Army | Whip antenna high voltage protection device |
EP0633622A1 (fr) * | 1993-07-08 | 1995-01-11 | State Of Israel - Ministry Of Defence | Protection contre la foudre pour des systèmes d'antenne |
US6366251B1 (en) * | 1999-05-13 | 2002-04-02 | The State Of Israel, Atomic Energy Commission, Soreq Nuclear Research Center | Antenna protection device |
EP2073305A1 (fr) * | 2007-12-21 | 2009-06-24 | Krauss-Maffei Wegmann GmbH & Co. KG | Dispositif de protection contre la foudre sur la structure d'un véhicule, en particulier une antenne de véhicule |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2631672A1 (fr) * | 2012-02-22 | 2013-08-28 | Honeywell International Inc. | Structure d'altimètre de radar d'aéronef |
US8866667B2 (en) | 2012-02-22 | 2014-10-21 | Honeywell International Inc. | High sensitivity single antenna FMCW radar |
US9081094B2 (en) | 2012-02-22 | 2015-07-14 | Honeywell International Inc. | Aircraft radar altimeter structure |
US9660605B2 (en) | 2014-06-12 | 2017-05-23 | Honeywell International Inc. | Variable delay line using variable capacitors in a maximally flat time delay filter |
US10018716B2 (en) | 2014-06-26 | 2018-07-10 | Honeywell International Inc. | Systems and methods for calibration and optimization of frequency modulated continuous wave radar altimeters using adjustable self-interference cancellation |
Also Published As
Publication number | Publication date |
---|---|
CN102884678A (zh) | 2013-01-16 |
CA2781783A1 (fr) | 2011-06-03 |
FR2953069B1 (fr) | 2012-03-09 |
EP2504883A1 (fr) | 2012-10-03 |
CN102884678B (zh) | 2014-11-26 |
US20130033402A1 (en) | 2013-02-07 |
EP2504883B1 (fr) | 2015-01-07 |
BR112012012501A2 (pt) | 2016-04-12 |
ES2535016T3 (es) | 2015-05-04 |
FR2953069A1 (fr) | 2011-05-27 |
US9941583B2 (en) | 2018-04-10 |
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