Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
  • H01Q9/04—Resonant antennas
  • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
  • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
  • H01Q15/14—Reflecting surfaces; Equivalent structures
  • H01Q15/148—Reflecting surfaces; Equivalent structures with means for varying the reflecting properties
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
  • H01Q19/005—Patch antenna using one or more coplanar parasitic elements
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01Q—ANTENNAS, i.e. RADIO AERIALS
  • H01Q21/00—Antenna arrays or systems
  • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
  • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
  • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
  • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
  • G01S2013/0236—Special technical features
  • G01S2013/0245—Radar with phased array antenna
• • 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
  • H01Q21/00—Antenna arrays or systems
  • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
  • H01Q21/061—Two dimensional planar arrays

Definitions

• the present invention relates to a radar antenna and to a suitable method for influencing the emission characteristic of a radar antenna.
• the radiation characteristic of a radar antenna is basically spherical, should not separate directional elements influence the emission characteristics.
• the Abstrahl characteristic also occurs when used straightening elements, primarily spherical, the illumination is possibly insufficient in peripheral areas.
• the radiation characteristic of the antenna by the spatial arrangement of the parasitic elements to the antenna and phase angle radiated energies of the antenna and the parasitic elements made dependent on the parasitic elements an improved radiation characteristic can be brought about, in particular in inaccessible edge regions a signal effect produce.
• the parasitic elements With the arrangement of the parasitic elements, on the one hand, a widening, but also a focussing of the radiation characteristic of the radar antenna can result, primarily in azimuth.
• the improved emission characteristic is advantageously also implemented in microstrip line technology, even if one or several antenna lines are used.
• the parasitic elements change their emission characteristic by mutual coupling with one another and / or by mutual coupling with the antenna to be influenced. In this way, simply the desired radiation characteristics can be brought about and be aligned depending on the application profile. If the parasitic elements are arranged parallel to the longitudinal axis of the radar antenna to be influenced, a more optimal emission characteristic is provided.
• the parasitic elements at the antenna base have a defined termination, a preferred influencing of the emission characteristic of the radar antenna is enabled and implemented.
• the radiation characteristic of the radar antennas can likewise be influenced by the use of the geometric design of the radome, and in particular a coupling, as described for example in claim 6, additionally brought about.
• the radiation characteristic of the radar antenna is thus influenced in addition to the parasitic elements via the radome or depending on the circumstances reaches the edge zone or edge areas.
• the radar antenna with parasitic elements in the frequency range between 1 MHz and 200 GHz, is preferably applied in the frequency range between 20 GHz and 100 GHz. This frequency range is effectively implemented in particular in interaction with the microstrip line. A particularly noteworthy use of the antenna with parasitic elements is in the frequency range between 70 and 80 GHz. It has also proven to be advantageous if the antenna is used from transmitter or receiver or combined transceiver radar antenna. With the radar system according to the application it has been found that the use in determining the position / or velocity of objects influencing and aligning the emission characteristic is an advantageous field of application.
• Fig. 1 shows an according to the application radar antenna system in
• Fig. 2 shows an according to the application radar antenna system with multiple antenna lines in microstrip line technology.
• Fig. 3 shows the emission characteristic according to the application
• Fig. 4 shows energy distribution within the application according to the application
• FIG. 1 shows the antenna line to be influenced in microstrip technology, which preferably has parallel parasitic elements 2, which are likewise shown as antenna lines in microstrip technology.
• a further advantageous embodiment consists in using a plurality of antenna lines to be influenced in microstrip line technology according to FIG. 2, which are influenced by parasitic elements 2, the parasitic elements 2 being an antenna line in microstrip technology are arranged in parallel. It should be emphasized at this point that, depending on the number of parasitic elements arranged in parallel, the emission characteristic can be influenced correspondingly for the radar antenna system according to the application.
• FIG. 3 shows the radar antenna system according to the application of FIG. 1 to what extent the emission characteristic of the influenced radar antenna 1 can bring about improved illumination, in particular in the edge zone region.
• FIG. 3 likewise shows the emission characteristic corresponding to the azimuth angle,, which reproduces an expanded emission characteristic with a corresponding antenna gain 3.
• FIG. 4 the qualitative description of the influence of the radiation characteristic is reproduced by the mutual coupling between a transmitting antenna and two parasitic elements corresponding to the representation of Figure 1.
• the signal source 0 propagates energy to the radar antenna acting as the transmitting antenna. From the transmitting antenna energy is then radiated into the room. Part of the energy hits the parasitic elements. From the parasitic elements, a part of the energy is reflected and blasted into the room. The radiated energy has a phase angle ⁇ .
• the parasitic elements receive energy radiated from the transmitting antenna to the parasitic antennas according to FIG. 14, the process is described in which the energy that is reflected by the parasitic elements 2 and radiated by the radar antenna in the room. The energy has the phase position ⁇ 2.
• the radiation characteristic of the transmitting antenna 1 is influenced by the radiated energy of the parasitic elements.
• the radiated energy of the transmitting antenna 1 is influenced by the radiated energy of the parasitic elements.
• the radiated energy of the transmitting antenna 1 is influenced by the radiated energy of the parasitic elements.
• the emission characteristic is widened or focused depends on the spatial arrangement of the respective transmit antennas or parasitic antennas and the corresponding phase position ⁇ , ⁇ 2, etc. In this way, in particular, a radar antenna system is provided, which can expand the emission characteristic as required and in particular can be advantageously used in the application of microstrip line technologies.

Landscapes

• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Variable-Direction Aerials And Aerial Arrays (AREA)
• Aerials With Secondary Devices (AREA)
• Waveguide Aerials (AREA)
• Radar Systems Or Details Thereof (AREA)
• Details Of Aerials (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=55072605

Family Applications (1)

Country Status (7)

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Citations (3)

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• 2014
  • 2014-12-05 DE DE102014118036.4A patent/DE102014118036A1/de not_active Withdrawn
• 2015
  • 2015-12-07 JP JP2017528474A patent/JP6600686B2/ja active Active
  • 2015-12-07 US US15/532,261 patent/US11245198B2/en active Active
  • 2015-12-07 EP EP15820821.5A patent/EP3227961A1/de not_active Ceased
  • 2015-12-07 WO PCT/EP2015/078853 patent/WO2016087676A1/de not_active Ceased
  • 2015-12-07 CN CN201580066071.4A patent/CN107278343B/zh active Active
  • 2015-12-07 KR KR1020177015825A patent/KR102409534B1/ko active Active

Patent Citations (4)

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