JPH0221169B2 - - Google Patents
Info
- Publication number
- JPH0221169B2 JPH0221169B2 JP55074548A JP7454880A JPH0221169B2 JP H0221169 B2 JPH0221169 B2 JP H0221169B2 JP 55074548 A JP55074548 A JP 55074548A JP 7454880 A JP7454880 A JP 7454880A JP H0221169 B2 JPH0221169 B2 JP H0221169B2
- Authority
- JP
- Japan
- Prior art keywords
- support
- waves
- wave
- plane
- reflected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000005855 radiation Effects 0.000 description 29
- 238000010586 diagram Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 4
- 239000013598 vector Substances 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
-
- 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
- H01Q19/18—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 having two or more spaced reflecting surfaces
- H01Q19/19—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 having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
-
- 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
- H01Q19/02—Details
- H01Q19/021—Means for reducing undesirable effects
- H01Q19/023—Means for reducing undesirable effects for reducing the scattering of mounting structures, e.g. of the struts
-
- 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
- H01Q19/12—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 wherein the surfaces are concave
Landscapes
- Aerials With Secondary Devices (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7454880A JPS56169906A (en) | 1980-06-03 | 1980-06-03 | Antenna device |
| CA000378683A CA1172354A (en) | 1980-06-03 | 1981-05-29 | Microwave antenna having improved wide angle radiation characteristics |
| US06/269,216 US4369448A (en) | 1980-06-03 | 1981-06-02 | Microwave antenna with radiation scattering support member elements |
| GB8116783A GB2081023B (en) | 1980-06-03 | 1981-06-02 | Reflector antenna |
| GB08408429A GB2145569B (en) | 1980-06-03 | 1984-04-02 | Reflector antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7454880A JPS56169906A (en) | 1980-06-03 | 1980-06-03 | Antenna device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56169906A JPS56169906A (en) | 1981-12-26 |
| JPH0221169B2 true JPH0221169B2 (US20020051482A1-20020502-M00012.png) | 1990-05-14 |
Family
ID=13550410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7454880A Granted JPS56169906A (en) | 1980-06-03 | 1980-06-03 | Antenna device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS56169906A (US20020051482A1-20020502-M00012.png) |
| GB (1) | GB2145569B (US20020051482A1-20020502-M00012.png) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2637130B1 (fr) * | 1988-09-23 | 1991-05-31 | Alcatel Transmission | Antenne a optique cassegrain a haut rendement |
| AU627493B2 (en) * | 1988-09-23 | 1992-08-27 | Alcatel N.V. | A circularly symmetrical reflector |
| US5182569A (en) * | 1988-09-23 | 1993-01-26 | Alcatel N.V. | Antenna having a circularly symmetrical reflector |
| JP4884670B2 (ja) * | 2004-12-24 | 2012-02-29 | 株式会社デバイス | アンテナ昇降装置 |
| WO2011048941A1 (ja) | 2009-10-21 | 2011-04-28 | 三菱電機株式会社 | アンテナ装置 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53105343A (en) * | 1977-02-26 | 1978-09-13 | Nippon Telegr & Teleph Corp <Ntt> | Antenna unit |
| JPS54134959A (en) * | 1978-04-12 | 1979-10-19 | Mitsubishi Electric Corp | Radio-wave shielding board |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB609060A (en) * | 1946-03-05 | 1948-09-24 | Athur Harold Stevens | Improvements in or relating to an absorption device for ultra high frequency radiant energy |
| GB1205014A (en) * | 1966-10-04 | 1970-09-09 | Gen Electric & English Elect | Improvements in or relating to directional aerial systems |
| GB1162312A (en) * | 1967-02-16 | 1969-08-27 | Mini Of Technology London | Improvements in or relating to Microwave Aerial Assemblies |
-
1980
- 1980-06-03 JP JP7454880A patent/JPS56169906A/ja active Granted
-
1984
- 1984-04-02 GB GB08408429A patent/GB2145569B/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53105343A (en) * | 1977-02-26 | 1978-09-13 | Nippon Telegr & Teleph Corp <Ntt> | Antenna unit |
| JPS54134959A (en) * | 1978-04-12 | 1979-10-19 | Mitsubishi Electric Corp | Radio-wave shielding board |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2145569A (en) | 1985-03-27 |
| GB8408429D0 (en) | 1984-05-10 |
| GB2145569B (en) | 1985-09-18 |
| JPS56169906A (en) | 1981-12-26 |
