LU63543A1 - - Google Patents
Info
- Publication number
- LU63543A1 LU63543A1 LU63543DA LU63543A1 LU 63543 A1 LU63543 A1 LU 63543A1 LU 63543D A LU63543D A LU 63543DA LU 63543 A1 LU63543 A1 LU 63543A1
- Authority
- LU
- Luxembourg
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
- H04B7/0822—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection according to predefined selection scheme
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- 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
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
- H01Q21/26—Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre
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- 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
- H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Signal Processing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7026433A FR2108146B1 (en) | 1970-07-17 | 1970-07-17 | |
FR7026432A FR2112029B1 (en) | 1970-07-17 | 1970-07-17 | |
FR7117978A FR2135115B2 (en) | 1970-07-17 | 1971-05-18 | |
FR7117979A FR2137312B2 (en) | 1970-07-17 | 1971-05-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
LU63543A1 true LU63543A1 (en) | 1971-11-16 |
Family
ID=27446069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
LU63543D LU63543A1 (en) | 1970-07-17 | 1971-07-15 |
Country Status (10)
Country | Link |
---|---|
US (1) | US3747101A (en) |
JP (1) | JPS5316677B1 (en) |
AU (1) | AU457255B2 (en) |
BE (1) | BE769039A (en) |
CA (1) | CA938354A (en) |
DE (1) | DE2135737C2 (en) |
GB (1) | GB1333804A (en) |
LU (1) | LU63543A1 (en) |
NL (1) | NL172187C (en) |
NO (1) | NO131692C (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5559756U (en) * | 1978-10-20 | 1980-04-23 | ||
JPH01141846U (en) * | 1988-03-25 | 1989-09-28 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2994081A (en) * | 1953-03-06 | 1961-07-25 | Edward C Jordan | Radio direction finder |
DE1123000B (en) * | 1958-07-16 | 1962-02-01 | Standard Elektrik Lorenz Ag | Arrangement for wireless determination of direction based on the Doppler effect |
-
1971
- 1971-06-25 BE BE769039A patent/BE769039A/en not_active IP Right Cessation
- 1971-06-30 US US00158486A patent/US3747101A/en not_active Expired - Lifetime
- 1971-07-08 GB GB3223471A patent/GB1333804A/en not_active Expired
- 1971-07-13 AU AU31135/71A patent/AU457255B2/en not_active Expired
- 1971-07-14 JP JP5283971A patent/JPS5316677B1/ja active Pending
- 1971-07-15 LU LU63543D patent/LU63543A1/xx unknown
- 1971-07-16 CA CA118476A patent/CA938354A/en not_active Expired
- 1971-07-16 NL NLAANVRAGE7109881,A patent/NL172187C/en not_active IP Right Cessation
- 1971-07-16 DE DE2135737A patent/DE2135737C2/en not_active Expired
- 1971-07-16 NO NO2738/71A patent/NO131692C/no unknown
Also Published As
Publication number | Publication date |
---|---|
AU3113571A (en) | 1973-01-18 |
JPS5316677B1 (en) | 1978-06-02 |
NO131692C (en) | 1975-07-09 |
DE2135737A1 (en) | 1972-01-20 |
CA938354A (en) | 1973-12-11 |
NO131692B (en) | 1975-04-01 |
GB1333804A (en) | 1973-10-17 |
AU457255B2 (en) | 1975-01-23 |
DE2135737C2 (en) | 1982-09-09 |
BE769039A (en) | 1971-11-03 |
US3747101A (en) | 1973-07-17 |
NL172187C (en) | 1983-07-18 |
NL7109881A (en) | 1972-01-19 |