IT454184A - - Google Patents
Info
- Publication number
- IT454184A IT454184A IT454184DA IT454184A IT 454184 A IT454184 A IT 454184A IT 454184D A IT454184D A IT 454184DA IT 454184 A IT454184 A IT 454184A
- Authority
- IT
- Italy
Links
Classifications
-
- 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
- H01Q21/12—Parallel arrangements of substantially straight elongated conductive units
- H01Q21/14—Adcock antennas
-
- 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
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/04—Details
- G01S3/12—Means for determining sense of direction, e.g. by combining signals from directional antenna or goniometer search coil with those from non-directional antenna
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G7/00—Volume compression or expansion in amplifiers
- H03G7/002—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers
- H03G7/005—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers using discontinuously variable devices, e.g. switch-operated
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Multimedia (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR967973T | 1948-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT454184A true IT454184A (xx) |
Family
ID=9501010
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT454184D IT454184A (xx) | 1948-06-14 | ||
| IT454410D IT454410A (xx) | 1948-06-14 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT454410D IT454410A (xx) | 1948-06-14 |
Country Status (2)
| Country | Link |
|---|---|
| FR (3) | FR967972A (xx) |
| IT (2) | IT454410A (xx) |
-
0
- IT IT454184D patent/IT454184A/it unknown
- IT IT454410D patent/IT454410A/it unknown
-
1948
- 1948-06-14 FR FR967972D patent/FR967972A/fr not_active Expired
- 1948-06-14 FR FR967973D patent/FR967973A/fr not_active Expired
- 1948-06-14 FR FR967971D patent/FR967971A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR967973A (fr) | 1950-11-16 |
| FR967971A (fr) | 1950-11-16 |
| FR967972A (fr) | 1950-11-16 |
| IT454410A (xx) |