GB976807A - Improvements in or relating to logarithmic receiving aerial systems - Google Patents
Improvements in or relating to logarithmic receiving aerial systemsInfo
- Publication number
- GB976807A GB976807A GB3982861A GB3982861A GB976807A GB 976807 A GB976807 A GB 976807A GB 3982861 A GB3982861 A GB 3982861A GB 3982861 A GB3982861 A GB 3982861A GB 976807 A GB976807 A GB 976807A
- Authority
- GB
- United Kingdom
- Prior art keywords
- elements
- logarithmic
- receiving
- section
- adjacent
- 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
- H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
- H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
- H01Q11/10—Logperiodic antennas
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
976,807. Aerials. MARCONI CO. Ltd. May 10, 1962 [Nov. 7, 1961], No. 39828/61. Heading H4A. A " logarithmic " aerial assembly, for receiving a wide band of frequencies or more particularly for receiving a specific number of frequencies within the band, e.g. those transmitted by the television transmitters marked as crosses a, b, c, d, comprises a feeder F fed at one end and bent into a plurality of sections A, B, C, D running in appropriate directions, each section being provided with a number of elements A 1 -A 4 &c. whose length and spacing along the section varies logarithmically. The elements may be dipoles (as shown) or folded dipoles. The " taper ratio " that is the ratio of the lengths of adjacent elements is a constant for a particular section and may be a constant for all the sections. The balanced feeder F comprises two conductors fed at the end adjacent the shortest element, " crossed over " between adjacent elements (Fig. 2, not shown), and terminated at the remote end either by a resistor or by directly connecting the ends together. As shown, the elements A 1 -A 4 and D 1 -D 4 are arranged to receive horizontally polarized waves, the elements B 1 -B 4 and C 1 -C 4 being arranged to receive vertically polarized waves. Specifications 884,889 and 965,580 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3982861A GB976807A (en) | 1961-11-07 | 1961-11-07 | Improvements in or relating to logarithmic receiving aerial systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3982861A GB976807A (en) | 1961-11-07 | 1961-11-07 | Improvements in or relating to logarithmic receiving aerial systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB976807A true GB976807A (en) | 1964-12-02 |
Family
ID=10411722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3982861A Expired GB976807A (en) | 1961-11-07 | 1961-11-07 | Improvements in or relating to logarithmic receiving aerial systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB976807A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5666126A (en) * | 1995-09-18 | 1997-09-09 | California Amplifier | Multi-staged antenna optimized for reception within multiple frequency bands |
-
1961
- 1961-11-07 GB GB3982861A patent/GB976807A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5666126A (en) * | 1995-09-18 | 1997-09-09 | California Amplifier | Multi-staged antenna optimized for reception within multiple frequency bands |
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