BE437348A - - Google Patents
Info
- Publication number
- BE437348A BE437348A BE437348DA BE437348A BE 437348 A BE437348 A BE 437348A BE 437348D A BE437348D A BE 437348DA BE 437348 A BE437348 A BE 437348A
- Authority
- BE
- Belgium
Links
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
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electrotherapy Devices (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Radiation-Therapy Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE212454X | 1939-01-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE437348A true BE437348A (ja) |
Family
ID=5808190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE437348D BE437348A (ja) | 1939-01-07 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2238268A (ja) |
| BE (1) | BE437348A (ja) |
| CH (1) | CH212454A (ja) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3172106A (en) * | 1960-12-22 | 1965-03-02 | Gen Precision Inc | Semi-passive beacon |
-
0
- BE BE437348D patent/BE437348A/xx unknown
-
1939
- 1939-12-04 CH CH212454D patent/CH212454A/de unknown
- 1939-12-27 US US311081A patent/US2238268A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CH212454A (de) | 1940-11-30 |
| US2238268A (en) | 1941-04-15 |