GB438326A - Improvements in loop antennae - Google Patents
Improvements in loop antennaeInfo
- Publication number
- GB438326A GB438326A GB12220/35A GB1222035A GB438326A GB 438326 A GB438326 A GB 438326A GB 12220/35 A GB12220/35 A GB 12220/35A GB 1222035 A GB1222035 A GB 1222035A GB 438326 A GB438326 A GB 438326A
- Authority
- GB
- United Kingdom
- Prior art keywords
- interrupted
- conductor
- horizontal
- length
- aerial
- 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
Links
Classifications
-
- 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
- G01S3/085—Means for reducing polarisation errors, e.g. by use of Adcock or spaced loop antenna systems by using spaced loop aerial systems
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
438,326. Aerials. NAAMLOOZE VENNOOTSCHAP PHILIPS' GOLEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. April 23, 1935, No. 12220. Convention date, May 9, 1934. Drawings to Specification. [Class 40 (v)] A loop aerial, more particularly for a radio beacon transmitter, has a length which is great relative to its height the latter being small relative to the operating wavelength, and the conductor is interrupted at one or more symmetrically situated points by impedances such that radiation by the horizontal parts is substantially eliminated. In one embodiment the upper horizontal conductor is interrupted at the centre by a capacity the impedance Z of which is given by the formula Z = 2 j Ro tan. #l/# where Ro is the wave resistance of the aerial l is half the horizontal length and # the wavelength.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL438326X | 1934-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB438326A true GB438326A (en) | 1935-11-14 |
Family
ID=19786217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12220/35A Expired GB438326A (en) | 1934-05-09 | 1935-04-23 | Improvements in loop antennae |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR789403A (en) |
| GB (1) | GB438326A (en) |
| NL (1) | NL40848C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2166000A (en) * | 1984-10-24 | 1986-04-23 | Electronic Indentification Sys | A system for transmission of high-frequency electromagnetic signals |
-
0
- NL NL40848D patent/NL40848C/xx active
-
1935
- 1935-04-23 GB GB12220/35A patent/GB438326A/en not_active Expired
- 1935-04-30 FR FR789403D patent/FR789403A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2166000A (en) * | 1984-10-24 | 1986-04-23 | Electronic Indentification Sys | A system for transmission of high-frequency electromagnetic signals |
Also Published As
| Publication number | Publication date |
|---|---|
| NL40848C (en) | |
| FR789403A (en) | 1935-10-29 |
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