GB530406A - Improvements in or relating to radio antennae - Google Patents
Improvements in or relating to radio antennaeInfo
- Publication number
- GB530406A GB530406A GB18250/39A GB1825039A GB530406A GB 530406 A GB530406 A GB 530406A GB 18250/39 A GB18250/39 A GB 18250/39A GB 1825039 A GB1825039 A GB 1825039A GB 530406 A GB530406 A GB 530406A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wires
- legs
- though
- pair
- wide band
- 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
- 230000005855 radiation Effects 0.000 abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000011664 signaling Effects 0.000 abstract 1
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
- H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
Abstract
530,406. Directive wireless signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 22, 1939, No. 18250. Convention date, July 28, 1938. [Class 40 (v)] A directive aerial with a wide band characteristic, suitable for transmitting or receiving television signals, consists of a multiple-V arrangement, the various elements being effectively in parallel though the wires may be connected in series, each leg of each V consisting of a pair of closely-set wires. As shown in Fig. 3, each. of the legs A, B is an odd number of eighths of the working wavelength. In Fig. 5 the length of the legs is the same, though the inside pair B, B includes a surge impedance at the apex ; this gives a particularly wide band characteristic. In Fig. 4 the legs are each an integral number of half-waves in length, and the inside pair are open-ended. The wires may be of different diameters. Owing to the close spacing of the wires, the radiation characteristic is equivalent to that of a single dipole though the radiation resistance is quadrupled. This means, in practice, that no impedance-matching coupling is required between the aerial system and the feedline TL. Specification 500,162 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US221694A US2258407A (en) | 1938-07-28 | 1938-07-28 | Wide band antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB530406A true GB530406A (en) | 1940-12-11 |
Family
ID=22828936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18250/39A Expired GB530406A (en) | 1938-07-28 | 1939-06-22 | Improvements in or relating to radio antennae |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2258407A (en) |
| GB (1) | GB530406A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2452073A (en) * | 1944-11-17 | 1948-10-26 | Schivley George William | Folded dipole |
| US2465673A (en) * | 1945-07-09 | 1949-03-29 | Breen Stanley | Antenna |
| US2646505A (en) * | 1946-03-01 | 1953-07-21 | Us Sec War | Broad band bidirectional antenna |
| BE489963A (en) * | 1948-07-03 | 1900-01-01 | ||
| US4423423A (en) * | 1980-09-09 | 1983-12-27 | L. Barker & Williamson, Inc. | Broad bandwidth folded dipole antenna |
-
1938
- 1938-07-28 US US221694A patent/US2258407A/en not_active Expired - Lifetime
-
1939
- 1939-06-22 GB GB18250/39A patent/GB530406A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2258407A (en) | 1941-10-07 |
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