US2055100A - Short wave antenna - Google Patents
Short wave antenna Download PDFInfo
- Publication number
- US2055100A US2055100A US690827A US69082733A US2055100A US 2055100 A US2055100 A US 2055100A US 690827 A US690827 A US 690827A US 69082733 A US69082733 A US 69082733A US 2055100 A US2055100 A US 2055100A
- Authority
- US
- United States
- Prior art keywords
- short wave
- rigid
- wave antenna
- antenna
- arms
- 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 - Lifetime
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
- H01Q21/12—Parallel arrangements of substantially straight elongated conductive units
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
- G10D3/00—Details of, or accessories for, stringed musical instruments, e.g. slide-bars
- G10D3/22—Material for manufacturing stringed musical instruments; Treatment of the material
Definitions
- short wave directional antennae consist .of combinations of single dipoles made of flexible wire. These are insulated from each other and from the supporting mounting by 5 means of insulators which are usually located at the ends of the dipoles, that is, at places at which the voltage is a maximum. In such cases, it has been found that the shorter the wave the greater are the losses in the insulators.
- directional antennae for very short waves are composed of rigid wires or pipes supported by insulators at the voltage nodal point.
- An example of such an antenna constructed in 15 accordance with the principles of the present invention is shown in the accompanying drawing in which D designates a plurality of horizontal radiating dipoles, L is the feed line, and I is the insulators.
- the insulators are preferably rigid 20 and, in the preferred form, consist of tensioned insulator chains. Although horizontal dipoles are shown, it will be understood, of course, that the invention applies equally as well to vertical and inclined dipoles. In all cases the essential feature resides in the fact that the insulators are provided substantially at voltage nodal points and not at places of high voltage.
- the arrangement can be built so as to be easily demountable.
- the single conductors in such case can be connected to each other telescopically, or by clamping or screwing.
- an antenna system comprising two rigid coaxially arranged arms, each one 5 half wave length long, and rigid means for supporting each arm substantially at its midpoint.
- an antenna system comprising two rigid arms, each substantially an odd multiple .of a half wave length long, and rigid insulating means for supporting each arm at a voltage nodal point.
- an antenna system comprising a dipole having two rigid arms, high frequency apparatus, a two conductor line extending from said high frequency apparatus to said two arms of said dipole, and rigid insulating means for supporting each arm at a voltage nodal point substantially an odd multiple of a quarter wave length from the junction point of said arm with said line.
- an antenna system comprising coaxially horizontally arranged rigid arms, each substantially one-half wave length long, a similar pair of horizontal arms spaced away from said first pair in a vertical plane, high frequency apparatus, a two conductor transmission line extending from said high frequency apparatus to the adjacent ends of one of said pairs, crossed connections between said ends and the adjacent 0 ends of said other pair of arms, and rigid means for supporting each arm substantially at its midpoint.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Aerials With Secondary Devices (AREA)
Description
Sept. 22, 1936.
A. GOTHE SHORT WAVE ANTENNA Filed Sept. 25. 1953 INVENTOR ALBRECHT GOTHE ATTORNEY Patented Sept. 22, 1936 UNITED STATES PATENT OFFICE SHORT WAVE ANTENNA tion of Germany Application September 25, 1933, Serial No. 690,827 In Germany October 1, 1932 4 Claims. (Cl. 250-11) In general, short wave directional antennae consist .of combinations of single dipoles made of flexible wire. These are insulated from each other and from the supporting mounting by 5 means of insulators which are usually located at the ends of the dipoles, that is, at places at which the voltage is a maximum. In such cases, it has been found that the shorter the wave the greater are the losses in the insulators.
According to the present invention, directional antennae for very short waves, i. e., waves below 10 meters, are composed of rigid wires or pipes supported by insulators at the voltage nodal point. An example of such an antenna constructed in 15 accordance with the principles of the present invention is shown in the accompanying drawing in which D designates a plurality of horizontal radiating dipoles, L is the feed line, and I is the insulators. The insulators are preferably rigid 20 and, in the preferred form, consist of tensioned insulator chains. Although horizontal dipoles are shown, it will be understood, of course, that the invention applies equally as well to vertical and inclined dipoles. In all cases the essential feature resides in the fact that the insulators are provided substantially at voltage nodal points and not at places of high voltage.
If desired, there may be placed at the back of the antenna a homogeneous reflector for efiecting unidirectional radiation. If a transportable antenna arrangement is required the arrangement can be built so as to be easily demountable. The single conductors in such case can be connected to each other telescopically, or by clamping or screwing.
I claim:
1. In combination, an antenna system comprising two rigid coaxially arranged arms, each one 5 half wave length long, and rigid means for supporting each arm substantially at its midpoint.
2. In combination, an antenna system comprising two rigid arms, each substantially an odd multiple .of a half wave length long, and rigid insulating means for supporting each arm at a voltage nodal point.
3. In combination, an antenna system comprising a dipole having two rigid arms, high frequency apparatus, a two conductor line extending from said high frequency apparatus to said two arms of said dipole, and rigid insulating means for supporting each arm at a voltage nodal point substantially an odd multiple of a quarter wave length from the junction point of said arm with said line.
4. In combination, an antenna system comprising coaxially horizontally arranged rigid arms, each substantially one-half wave length long, a similar pair of horizontal arms spaced away from said first pair in a vertical plane, high frequency apparatus, a two conductor transmission line extending from said high frequency apparatus to the adjacent ends of one of said pairs, crossed connections between said ends and the adjacent 0 ends of said other pair of arms, and rigid means for supporting each arm substantially at its midpoint.
ALBRECHT GOTHE.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE411011X | 1932-10-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2055100A true US2055100A (en) | 1936-09-22 |
Family
ID=6428356
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US690827A Expired - Lifetime US2055100A (en) | 1932-10-01 | 1933-09-25 | Short wave antenna |
Country Status (4)
Country | Link |
---|---|
US (1) | US2055100A (en) |
FR (1) | FR411011A (en) |
GB (1) | GB411011A (en) |
NL (1) | NL37880C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2776430A (en) * | 1951-03-13 | 1957-01-01 | Leonard J Lynch | Television antenna |
US2870443A (en) * | 1953-04-15 | 1959-01-20 | Leonard J Lynch | Television antenna |
-
0
- NL NL37880D patent/NL37880C/xx active
-
1909
- 1909-12-18 FR FR411011A patent/FR411011A/en not_active Expired
-
1933
- 1933-09-25 US US690827A patent/US2055100A/en not_active Expired - Lifetime
- 1933-10-02 GB GB27078/33A patent/GB411011A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2776430A (en) * | 1951-03-13 | 1957-01-01 | Leonard J Lynch | Television antenna |
US2870443A (en) * | 1953-04-15 | 1959-01-20 | Leonard J Lynch | Television antenna |
Also Published As
Publication number | Publication date |
---|---|
NL37880C (en) | |
FR411011A (en) | 1910-06-06 |
GB411011A (en) | 1934-05-31 |
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