WO2001035486A1 - Sendeantenne - Google Patents
Sendeantenne Download PDFInfo
- Publication number
- WO2001035486A1 WO2001035486A1 PCT/EP2000/010651 EP0010651W WO0135486A1 WO 2001035486 A1 WO2001035486 A1 WO 2001035486A1 EP 0010651 W EP0010651 W EP 0010651W WO 0135486 A1 WO0135486 A1 WO 0135486A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- radome
- transmitting antenna
- snow
- antenna
- ice
- 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
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/02—Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
Definitions
- the invention relates to a transmission antenna for navigation systems
- a known and customary measure for checking the emitted signals provides for the use of monitor probes.
- monitor probes which are provided for the entire antenna or individual antenna beam depending on the individual case, the signal emitted by the transmitting antenna is received and forwarded to an evaluation unit, this evaluation unit a signal derived from the antenna feed signal is also supplied in a known manner. The comparison of these two signals then provides information about possible deviations, and corresponding corrections can then be made
- the antennas mentioned are generally set up and operated outdoors. To protect against weather damage, the antennas are housed in protective housings, which are also referred to as radomes
- the object of the present invention is therefore to provide a transmitting antenna for navigation systems, in which the control probe (s) receive the transmitted signal and forward it to an internal evaluation unit in which the signal received by the control probe (s) matches that of the transmitting antenna the signal fed to the antenna feed device is compared and the transmitting antenna is surrounded by a protective housing, a so-called radome, which allows the transmission of undisturbed signals, ie in which the sensitivity to weather-related conditions is largely reduced.
- FIG. 1 The accompanying drawing with a figure shows a cross-sectional illustration of a radiator group of a navigation antenna system for the instrument landing approach, in particular a so-called glide path antenna.
- a navigation antenna system for the instrument landing approach, in particular a so-called glide path antenna.
- Such an antenna is operated in the frequency range from 328 to 335 MHz.
- Each of the above radiator groups consists of a double row of dipoles 1 and 2 which are attached in front of a conductive rear wall 6. Also attached to the rear wall 6 is a monitor probe, parts 3 and 4 of which can be seen in FIG. 1. In this specific case, it is a Loop probe. The signal emitted by dipoles 1 and 2 is also picked up by the monitor probe and passed in a manner not shown to the evaluation unit (not shown here).
- the antenna feed device is also not shown, since it is not necessary for understanding the invention; for the rest, these are generally known functional elements of an antenna.
- a radome 5 is provided to protect the transmitting antenna. In the present case, it is a trough-shaped housing with an almost rectangular cross section according to the drawing.
- the transmitter antenna is shown in Fig. 1 in the position in which it is operated.
- a snow pad 9 can form on the top of the radome, for example when there is snow.
- Corresponding parts of the transmission signal are reflected on this snow layer 9 during operation of the transmitting antenna due to the physical property of the snow layer. These reflected signals are received, as are the transmission signals emanating from the dipoles and impinging directly on the monitor probe. This creates a signal superimposed by reflection signals, which is sent to the evaluation unit; however, this signal does not correspond to the transmission signal received by the aircraft.
- the reflector can be implemented in different ways. For example, reflector rods are shown in the drawing. But it could also e.g. a conductive film can be used.
- the reflector 7 is combined with an absorption layer 8 on the inside of the radome 5 attached. In this combinatorial way, the transmitter antenna is largely insensitive to weather influences (rain, ice, snow).
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50002869T DE50002869D1 (de) | 1999-11-06 | 2000-10-30 | Sendeantenne |
AT00974480T ATE244941T1 (de) | 1999-11-06 | 2000-10-30 | Sendeantenne |
EP00974480A EP1234349B1 (de) | 1999-11-06 | 2000-10-30 | Sendeantenne |
CA002390717A CA2390717A1 (en) | 1999-11-06 | 2000-10-30 | Transmitting antenna |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19953271A DE19953271A1 (de) | 1999-11-06 | 1999-11-06 | Sendeantenne |
DE19953271.0 | 1999-11-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001035486A1 true WO2001035486A1 (de) | 2001-05-17 |
Family
ID=7928021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/010651 WO2001035486A1 (de) | 1999-11-06 | 2000-10-30 | Sendeantenne |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1234349B1 (de) |
AT (1) | ATE244941T1 (de) |
CA (1) | CA2390717A1 (de) |
DE (2) | DE19953271A1 (de) |
WO (1) | WO2001035486A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5047787A (en) * | 1989-05-01 | 1991-09-10 | Motorola, Inc. | Coupling cancellation for antenna arrays |
US5173699A (en) * | 1986-11-14 | 1992-12-22 | The Marconi Company Limited | Antenna arrangement |
US5841394A (en) * | 1997-06-11 | 1998-11-24 | Itt Manufacturing Enterprises, Inc. | Self calibrating radar system |
DE19724320A1 (de) * | 1997-06-10 | 1998-12-17 | Bosch Gmbh Robert | Verfahren zur herstellung einer heizbaren Antennenlinse |
GB2326530A (en) * | 1997-04-22 | 1998-12-23 | Andrew Corp | Antenna with parabolic and conical reflectors |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2180585B1 (de) * | 1972-04-21 | 1974-12-20 | Thomson Csf | |
DE3533211A1 (de) * | 1985-09-18 | 1987-03-19 | Standard Elektrik Lorenz Ag | Parabolantenne fuer richtfunkanlagen |
DE4227857A1 (de) * | 1992-08-22 | 1994-02-24 | Sel Alcatel Ag | Einrichtung zur Gewinnung der Aperturbelegung einer phasengesteuerten Gruppenantenne |
GB2282292B (en) * | 1993-09-28 | 1997-12-17 | Siemens Plessey Electronic | Improvements in or relating to aircraft landing systems |
FR2782846A1 (fr) * | 1998-08-28 | 2000-03-03 | Thomson Csf | Radome monobloc |
-
1999
- 1999-11-06 DE DE19953271A patent/DE19953271A1/de not_active Withdrawn
-
2000
- 2000-10-30 WO PCT/EP2000/010651 patent/WO2001035486A1/de active IP Right Grant
- 2000-10-30 CA CA002390717A patent/CA2390717A1/en not_active Abandoned
- 2000-10-30 AT AT00974480T patent/ATE244941T1/de not_active IP Right Cessation
- 2000-10-30 EP EP00974480A patent/EP1234349B1/de not_active Expired - Lifetime
- 2000-10-30 DE DE50002869T patent/DE50002869D1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5173699A (en) * | 1986-11-14 | 1992-12-22 | The Marconi Company Limited | Antenna arrangement |
US5047787A (en) * | 1989-05-01 | 1991-09-10 | Motorola, Inc. | Coupling cancellation for antenna arrays |
GB2326530A (en) * | 1997-04-22 | 1998-12-23 | Andrew Corp | Antenna with parabolic and conical reflectors |
DE19724320A1 (de) * | 1997-06-10 | 1998-12-17 | Bosch Gmbh Robert | Verfahren zur herstellung einer heizbaren Antennenlinse |
US5841394A (en) * | 1997-06-11 | 1998-11-24 | Itt Manufacturing Enterprises, Inc. | Self calibrating radar system |
Also Published As
Publication number | Publication date |
---|---|
EP1234349B1 (de) | 2003-07-09 |
ATE244941T1 (de) | 2003-07-15 |
EP1234349A1 (de) | 2002-08-28 |
DE19953271A1 (de) | 2001-05-10 |
DE50002869D1 (de) | 2003-08-14 |
CA2390717A1 (en) | 2001-05-17 |
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