WO2005062425A1 - 電波レンズアンテナ装置 - Google Patents
電波レンズアンテナ装置 Download PDFInfo
- Publication number
- WO2005062425A1 WO2005062425A1 PCT/JP2004/019216 JP2004019216W WO2005062425A1 WO 2005062425 A1 WO2005062425 A1 WO 2005062425A1 JP 2004019216 W JP2004019216 W JP 2004019216W WO 2005062425 A1 WO2005062425 A1 WO 2005062425A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lens
- antenna device
- antenna
- primary radiator
- radio wave
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
-
- 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
- H01Q19/06—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 refracting or diffracting devices, e.g. lens
- H01Q19/062—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 refracting or diffracting devices, e.g. lens for focusing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
- H01Q3/14—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying the relative position of primary active element and a refracting or diffracting device
Definitions
- the present invention relates to a high gain, low side lobe lens antenna device configured by combining a radio wave lens having a Luneberg lens as a basic form and a primary radiator.
- a radio wave lens having a Luneberg lens as a basic shape has a radio wave bending characteristic similar to that of a Luneberg lens, and the distance from the lens surface to the focal point of the lens is defined as a and the lens radius as Refers to a lens designed to satisfy the condition 0 ⁇ a ⁇ r (hereafter referred to as an approximate Luneberg lens).
- An antenna device using a Luneberg lens is known to be effective as a multi-beam antenna, and is expected as an antenna for transmitting and receiving radio waves to and from satellites.
- the optimization of the feed is indispensable and important.
- a novola antenna is composed of a reflector and an LNB (low noise block). Radio waves are reflected by a parabolic reflection surface of the reflector and converge to a focal point, whereas a lens antenna is composed of a lens and an LNB. The radio wave is refracted inside the lens and converges on the focal point.
- LNB low noise block
- Non-Patent Document 1 describes a primary radiator.
- Non-Patent Document 1 Antenna Engineering Handbook, 3rd Edition, 17—17—17 -21
- Non-Patent Document 1 generally states that when the angle from the primary radiator to the reflector (dish) end is ⁇ 1, the gain drop at the angle ⁇ 1 from the main gain is 10 dB. That the primary radiator with excellent directivity has excellent gain and side lobe Yes.
- the side lobe of the antenna decreases as the beam width of the primary radiator of the antenna increases. It is generally known that when the power at the end of the opening of a parabolic antenna is reduced to taper the power distribution, the side lobe decreases, but on the other hand, the gain of the antenna gradually decreases, and the primary radiation decreases. When the beam width of the detector narrows to a certain point, the gain drops sharply.
- a lens antenna can reduce the side lobe by reducing the half-width of the primary radiator combined with the lens.
- the gain of the antenna is also because the aperture of the lens cannot be used effectively.
- the half-width position force of the primary radiator drops sharply, so it is not easy to achieve both high gain and low sidelobe.
- an antenna using an approximate Luneberg lens can form a physically ideal curved surface, and unlike a parabolic antenna whose focal position is determined by the curvature of the curved surface, the characteristics of the lens deviate from ideal. For example, the discontinuity of the relative dielectric constant due to the structure and the variation of the radio wave bending factor that occur during actual lens manufacturing are inevitable, and this variation causes a higher side lobe. It is difficult to achieve both high gain and low side groove.
- a distance from the lens surface to the focal point of the lens is defined as a, and a lens radius is defined as r.
- the obtained radio lens approximately Luneberg lens
- A 0 Z2 X (l + 2aZr)
- 10 dB beam width refers to the width of a beam at a position 10 dB below the maximum gain of a radio wave, as shown in FIG.
- the primary radiator is preferably one in which ⁇ is set so that the value of A is 50 or more and 70 or less.
- the lens antenna device of the present invention constitutes a radio wave lens by combining a hemispherical lens and a reflector having a part of the reflection surface protruding outside the lens toward the direction of arrival of radio waves,
- a combination of the radio wave lens, the primary radiator, and a holding means for holding the primary radiator in a fixed position can be considered as one form, which is suitable for transmitting to and receiving from a geostationary satellite. I have.
- FIG. 1 is a side view showing an example of a lens antenna device of the present invention.
- FIG. 2 is a side view showing another example of the lens antenna device of the present invention.
- FIG. 3 Diagram showing the relationship between the distance from the lens surface to the focal point and the lens radius.
- FIG. 4 Diagram showing the method for evaluating the performance of the lens antenna device.
- FIG. 5 is a diagram showing performance evaluation results of a lens antenna device
- the lens antenna apparatus shown in FIG. 1 includes a radio wave lens 1, a primary radiator 2 arranged at a focal point of the radio wave lens 1 (a focal point corresponding to a stationary satellite of a communication partner), and a primary radiator 2. And holding means 3 for holding 2 in a fixed position.
- the illustrated radio wave lens 1 is configured by combining a hemispherical lens 4 made of a dielectric material and a reflector 5 attached to a bisecting portion of the sphere of the lens 4.
- the radio wave lens 1 may be a spherical lens 4 shown in FIG. 2 or a combination of a 1Z4 hemispherical lens and a reflector.
- the lens 4 in FIG. 2 may be a spherical lens 4 shown in FIG. 2 or a combination of a 1Z4 hemispherical lens and a reflector.
- the lens 4 in FIG. 2 may be a spherical lens 4 shown in FIG. 2 or a combination of a 1Z4 hemispherical lens and a reflector.
- the lens 4 is an approximate Luneberg lens formed by laminating layers having different relative dielectric constants, and bends radio waves having an arbitrary directional force to converge on a focal point.
- the lens 4 is formed of a dielectric material that satisfies the condition 0 ⁇ a ⁇ r, where a is the distance from the lens surface to the focal point S of the lens in FIG.
- the primary radiator 2 is not particularly limited, and may be any of a co-calhoun antenna, a pyramidal horn antenna, a corrugated horn antenna, a dielectric rod antenna, a dielectric mounted horn antenna, a patch antenna, and the like.
- the size of the reflecting plate 5 is larger than that of the lens 4 so that a part of the reflecting surface protrudes outside the lens in the direction of arrival of radio waves.
- the holding means 3 employs an arch-shaped arm that can adjust the elevation angle in the antenna device of FIG. 1, but may be a fixed stand or the like.
- Example A more detailed example will be described below. The following were prepared as approximate Luneberg lenses.
- Lens diameter 370mm, hemispherical shape, total 8 layers
- a / r 0.005, 0.004, 0.09, 0.14, 0.25, 0.35, 0.51, 0.71 and 0.93.
- a lens antenna device is constructed by combining each of the above lenses combined with a reflector and the corrugated horn antenna C H-1—CH-9 shown in Table 1, and each lens antenna at 12.7 GHz The over rate of the gain and side lobe of the device from the following criteria was calculated.
- Figure 5 is an overlay of the data in Figures 6-14. The gain and side lobe over ratio of each antenna device are both concentrated on the position where they are almost on one curve. From this, it can be seen that the optimum feed of the antenna device can be obtained by using A in the above equation as a parameter.
- the antenna device can be used as long as it has an antenna aperture efficiency of 50% (gain 31dB) or more and a side lobe of 20% or less, so that the condition of 40 ⁇ A ⁇ 80 is derived. Also, if the antenna aperture efficiency is 65% (gain 32dB) or more and the side lobe is 10% or less, a more favorable antenna device will be obtained, so a numerical value of 50 ⁇ A ⁇ 70 is derived as a more preferable numerical value of A.
Landscapes
- Aerials With Secondary Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/584,272 US7333070B2 (en) | 2003-12-24 | 2004-12-22 | Radio wave lens antenna device |
CN200480042091XA CN1922765B (zh) | 2003-12-24 | 2004-12-22 | 无线电波透镜天线装置 |
EP04807573A EP1699111A1 (en) | 2003-12-24 | 2004-12-22 | Radio wave lens antenna device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003427506A JP3925494B2 (ja) | 2003-12-24 | 2003-12-24 | 電波レンズアンテナ装置 |
JP2003-427506 | 2003-12-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005062425A1 true WO2005062425A1 (ja) | 2005-07-07 |
Family
ID=34708897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/019216 WO2005062425A1 (ja) | 2003-12-24 | 2004-12-22 | 電波レンズアンテナ装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7333070B2 (ja) |
EP (1) | EP1699111A1 (ja) |
JP (1) | JP3925494B2 (ja) |
CN (1) | CN1922765B (ja) |
WO (1) | WO2005062425A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009051171A1 (ja) * | 2007-10-16 | 2009-04-23 | Sumitomo Electric Industries, Ltd. | 電波レンズアンテナ装置 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010034754A (ja) * | 2008-07-28 | 2010-02-12 | National Institute Of Information & Communication Technology | レンズアンテナ装置 |
CN101976755A (zh) * | 2010-08-30 | 2011-02-16 | 电子科技大学 | 一种基于新型开孔结构的高效率介质透镜天线 |
CN112436289B (zh) * | 2020-11-12 | 2023-04-07 | 佛山蓝谱达科技有限公司 | 一种波束分离器 |
CN114336078B (zh) * | 2021-12-09 | 2024-06-04 | 重庆文理学院 | 一种高介电常数的异形龙伯透镜 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001044746A (ja) * | 1999-07-30 | 2001-02-16 | Toshiba Corp | 衛星通信アンテナ装置 |
JP2003110352A (ja) * | 2001-09-28 | 2003-04-11 | Sumitomo Electric Ind Ltd | 電波レンズアンテナ装置及び同装置用ポインティングマップ |
JP2003110349A (ja) * | 2001-09-28 | 2003-04-11 | Sumitomo Electric Ind Ltd | 電波レンズアンテナ装置 |
JP2004297789A (ja) * | 2003-03-11 | 2004-10-21 | Sumitomo Electric Ind Ltd | ルーネベルグレンズおよびその製造方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4531129A (en) * | 1983-03-01 | 1985-07-23 | Cubic Corporation | Multiple-feed luneberg lens scanning antenna system |
JP2817714B2 (ja) * | 1996-05-30 | 1998-10-30 | 日本電気株式会社 | レンズアンテナ |
FR2778042B1 (fr) * | 1998-04-23 | 2000-06-30 | Thomson Multimedia Sa | Systeme d'antennes de poursuite de satellites a defilement |
WO2000038079A1 (en) * | 1998-12-22 | 2000-06-29 | Bios Group Lp | A method and system for performing optimization on fitness landscapes |
CN101098050B (zh) * | 2001-09-28 | 2010-09-22 | 住友电气工业株式会社 | 无线电波透镜天线装置 |
US7348934B2 (en) * | 2003-01-30 | 2008-03-25 | Sumitomo Electric Industries, Ltd. | Lens antenna system |
-
2003
- 2003-12-24 JP JP2003427506A patent/JP3925494B2/ja not_active Expired - Fee Related
-
2004
- 2004-12-22 EP EP04807573A patent/EP1699111A1/en not_active Withdrawn
- 2004-12-22 CN CN200480042091XA patent/CN1922765B/zh not_active Expired - Fee Related
- 2004-12-22 US US10/584,272 patent/US7333070B2/en not_active Expired - Fee Related
- 2004-12-22 WO PCT/JP2004/019216 patent/WO2005062425A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001044746A (ja) * | 1999-07-30 | 2001-02-16 | Toshiba Corp | 衛星通信アンテナ装置 |
JP2003110352A (ja) * | 2001-09-28 | 2003-04-11 | Sumitomo Electric Ind Ltd | 電波レンズアンテナ装置及び同装置用ポインティングマップ |
JP2003110349A (ja) * | 2001-09-28 | 2003-04-11 | Sumitomo Electric Ind Ltd | 電波レンズアンテナ装置 |
JP2004297789A (ja) * | 2003-03-11 | 2004-10-21 | Sumitomo Electric Ind Ltd | ルーネベルグレンズおよびその製造方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009051171A1 (ja) * | 2007-10-16 | 2009-04-23 | Sumitomo Electric Industries, Ltd. | 電波レンズアンテナ装置 |
Also Published As
Publication number | Publication date |
---|---|
CN1922765B (zh) | 2010-04-07 |
JP3925494B2 (ja) | 2007-06-06 |
CN1922765A (zh) | 2007-02-28 |
US7333070B2 (en) | 2008-02-19 |
EP1699111A1 (en) | 2006-09-06 |
JP2005191667A (ja) | 2005-07-14 |
US20070126653A1 (en) | 2007-06-07 |
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