NL54201C - - Google Patents
Info
- Publication number
- NL54201C NL54201C NL54201DA NL54201C NL 54201 C NL54201 C NL 54201C NL 54201D A NL54201D A NL 54201DA NL 54201 C NL54201 C NL 54201C
- Authority
- NL
- Netherlands
Links
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
- H01Q19/28—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 a secondary device in the form of two or more substantially straight conductive elements
-
- 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
-
- 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
- G01S3/08—Means for reducing polarisation errors, e.g. by use of Adcock or spaced loop antenna systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
- H01Q1/3275—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk
Landscapes
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Computer Networks & Wireless Communication (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE205573X | 1936-12-22 | ||
| DE200237X | 1937-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL54201C true NL54201C (en:Method) |
Family
ID=25758519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL54201D NL54201C (en:Method) | 1936-12-22 |
Country Status (3)
| Country | Link |
|---|---|
| US (2) | US2189283A (en:Method) |
| CH (1) | CH205573A (en:Method) |
| NL (1) | NL54201C (en:Method) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2449999A (en) * | 1942-10-30 | 1948-09-28 | Standard Telephones Cables Ltd | Antenna system for defining glide paths |
| US2713164A (en) * | 1945-05-21 | 1955-07-12 | Itt | Direction finding system |
| US3383694A (en) * | 1965-02-15 | 1968-05-14 | Carll F. Strohmeyer Jr. | Rotatable directional antenna attachment for use with a vertical antenna rod |
| US7348933B2 (en) * | 2000-03-10 | 2008-03-25 | Wifi Plus, Inc. | Compact multi-polarized antenna for portable devices |
| US6496152B2 (en) * | 2000-03-10 | 2002-12-17 | Jack Nilsson | Dual polarized antenna |
| US7179333B2 (en) * | 2002-09-23 | 2007-02-20 | Computrol, Inc. | Closure sealant dispenser |
| US8261631B2 (en) * | 2002-09-23 | 2012-09-11 | Computrol, Inc. | Rotary machine with separately controllable stations |
| US7138956B2 (en) * | 2002-11-14 | 2006-11-21 | Wifi-Plus, Inc. | Apparatus and method for a multi-polarized ground plane beam antenna |
| US7236129B2 (en) * | 2002-11-14 | 2007-06-26 | Wifi-Plus, Inc. | Apparatus and method for a multi-polarized antenna |
| US7030831B2 (en) * | 2002-11-14 | 2006-04-18 | Wifi-Plus, Inc. | Multi-polarized feeds for dish antennas |
| US7592033B2 (en) * | 2003-07-08 | 2009-09-22 | Computrol, Inc | Variable fluid dispenser |
-
0
- NL NL54201D patent/NL54201C/xx active
-
1937
- 1937-12-13 CH CH205573D patent/CH205573A/de unknown
- 1937-12-31 US US182675A patent/US2189283A/en not_active Expired - Lifetime
-
1938
- 1938-04-06 US US200370A patent/US2218707A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2218707A (en) | 1940-10-22 |
| US2189283A (en) | 1940-02-06 |
| CH205573A (de) | 1939-06-30 |