GB761557A - Improvements in and relating to radio aerials - Google Patents
Improvements in and relating to radio aerialsInfo
- Publication number
- GB761557A GB761557A GB2228453A GB2228453A GB761557A GB 761557 A GB761557 A GB 761557A GB 2228453 A GB2228453 A GB 2228453A GB 2228453 A GB2228453 A GB 2228453A GB 761557 A GB761557 A GB 761557A
- Authority
- GB
- United Kingdom
- Prior art keywords
- inches
- aerial
- sides
- aug
- small
- 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
- 230000004323 axial length Effects 0.000 abstract 1
- 239000004020 conductor Substances 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000003137 locomotive effect Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000005065 mining Methods 0.000 abstract 1
- 230000008054 signal transmission Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Aerials With Secondary Devices (AREA)
- Details Of Aerials (AREA)
Abstract
761,557. Aerials. BRITISH TELECOMMUNICATIONS RESEARCH, Ltd. Aug. 11, 1954 [Aug. 12, 1953], No. 22284/53. Class 40(7) A loop aerial having dimensions negligibly small in comparison with the operating wavelengths and an axial length equal to or greater than its equivalent diameter comprises a conducting sheet formed into a nearly closed loop having four sides 10, 11, 12, 13 the.edges of the sides 11 and 12 providing coupling points for associated transmitting or receiving apparatus. Such as aerial may 'be employed in positions where one dimension must be of very small size, e.g. on the top of a mining locomotive where the clearance between it and the roof of the mine is very small, the aerial in such position co-operating inductively with a conductor secured to the mine roof and serving as a "guide" for the transmission of signals. In a particular example in which the operating frequency is 100Kc/s the aerial is formed from a piece of sheet metal 36 inches long and 12 inches wide bent to form a rectangular box (as shown) having sides 9 and 11 each of 12 inches x 12 inches and sides 12 and 13 each of 12 inches x 6 inches and a transformer 15 is provided for impedance matching between the aerial and the apparatus 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2228453A GB761557A (en) | 1953-08-12 | 1953-08-12 | Improvements in and relating to radio aerials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2228453A GB761557A (en) | 1953-08-12 | 1953-08-12 | Improvements in and relating to radio aerials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB761557A true GB761557A (en) | 1956-11-14 |
Family
ID=10176885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2228453A Expired GB761557A (en) | 1953-08-12 | 1953-08-12 | Improvements in and relating to radio aerials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB761557A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5008660A (en) * | 1988-03-04 | 1991-04-16 | N.V. Nederlandsche Apparatenfabriek Nedap | Electromagnetic detection system |
-
1953
- 1953-08-12 GB GB2228453A patent/GB761557A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5008660A (en) * | 1988-03-04 | 1991-04-16 | N.V. Nederlandsche Apparatenfabriek Nedap | Electromagnetic detection system |
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