GB532107A - Improvements in or relating to antennae for radio signalling systems - Google Patents
Improvements in or relating to antennae for radio signalling systemsInfo
- Publication number
- GB532107A GB532107A GB1559839A GB1559839A GB532107A GB 532107 A GB532107 A GB 532107A GB 1559839 A GB1559839 A GB 1559839A GB 1559839 A GB1559839 A GB 1559839A GB 532107 A GB532107 A GB 532107A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aerial
- limbs
- loading
- capacity
- bridge
- 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
-
- 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
- H01Q9/265—Open ring dipoles; Circular dipoles
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radio Relay Systems (AREA)
Abstract
532,107. Directive wireless signalling. THIEMANN, W. H. A. (Bendix Aviation Corporation). May 25, 1939, No. 15598. [Class 40 (v)] An aerial for use with a horizontally-polarised "blind landing" beam consists of a centre-fed dipole with the two limbs 10, 11 bent back in the form of a loop, as shown in plan in Fig. 4. This provides a capacity " loading " and gives the aerial a substantially non-directional response, making it uniformally sensitive even when the plane is diving to land, or heading against a cross-wind. The aerial is fed at adjustable points 20a, 20b by a transmission line 19. The bentback limbs are adjustably secured in a common insulator sleeve 15, which is carried by a support 17, Fig. 5, mounted horizontally on the aeroplane. The aerial is preferably half a wave long, but a sliding bridge 12 near the feeding point allows the length to be adjusted. Figs. 6 and 7 show an alternative construction in which the two limbs 30, 31 are separated vertically, the inner ends 30a, 31a, being brought to a common intermediate plane and bridge at 32. The outer ends 30c and 31c overlap each other, as shown in elevation in Fig. 7, and are supported by bars 33, 33a and insulating pieces 34. The capacity loading between the overlapping parts allows the overall length of the aerial to be reduced for a given wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1559839A GB532107A (en) | 1939-05-25 | 1939-05-25 | Improvements in or relating to antennae for radio signalling systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1559839A GB532107A (en) | 1939-05-25 | 1939-05-25 | Improvements in or relating to antennae for radio signalling systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB532107A true GB532107A (en) | 1941-01-17 |
Family
ID=10061999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1559839A Expired GB532107A (en) | 1939-05-25 | 1939-05-25 | Improvements in or relating to antennae for radio signalling systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB532107A (en) |
-
1939
- 1939-05-25 GB GB1559839A patent/GB532107A/en not_active Expired
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