GB995396A - Logarithmic periodic antenna - Google Patents
Logarithmic periodic antennaInfo
- Publication number
- GB995396A GB995396A GB30443/63A GB3044363A GB995396A GB 995396 A GB995396 A GB 995396A GB 30443/63 A GB30443/63 A GB 30443/63A GB 3044363 A GB3044363 A GB 3044363A GB 995396 A GB995396 A GB 995396A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aerial
- catenary
- apex
- conductors
- suspended
- 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
- 230000000737 periodic effect Effects 0.000 title abstract 2
- 239000004020 conductor Substances 0.000 abstract 2
- 239000011810 insulating material Substances 0.000 abstract 2
- 239000003990 capacitor 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
- 239000011152 fibreglass Substances 0.000 abstract 1
- 229920000573 polyethylene Polymers 0.000 abstract 1
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)
- Locating Faults (AREA)
Abstract
995,396. Aerials. GRANGER ASSOCIATES. July 31, 1963 [Aug. 7, 1962], No. 30443/63. Heading H4A. A logarithmic periodic directional aerial comprises a series of spaced triangular toothed structures 1, 2 (Fig. 1) hanging from a catenary 3 which is suspended from a post 19 at the apex of the aerial so that the toothed structures lie in a vertical plane, the dimensions of these structures progressively increasing with distance from the apex. The catenary 3, of fibreglass or like insulating material, is suspended at the rear of the aerial from a mast 8 and further cables 6 of insulating material support the conductors 1, 2 of the aerial elements. These conductors are bonded at their lower ends to the centre tube or longeron 12 of a ground plane structure (Fig. 8, not shown) and are capacitatively coupled to a feed line 11, Fig. 6, enclosed in polythene 18, and which extends along the array being inclined upwardly from the ground plane towards the rear of the aerial. A cable 14 extends parallel to the line 11 to form a distributed capacitor for the coupling and the catenary is provided at the apex with a tension indicator. Specification 909,660 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US215339A US3276027A (en) | 1962-08-07 | 1962-08-07 | Logarithmic periodic antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB995396A true GB995396A (en) | 1965-06-16 |
Family
ID=22802596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30443/63A Expired GB995396A (en) | 1962-08-07 | 1963-07-31 | Logarithmic periodic antenna |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3276027A (en) |
| FR (1) | FR1365189A (en) |
| GB (1) | GB995396A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3355739A (en) * | 1964-11-04 | 1967-11-28 | Collins Radio Co | Shunt excited log periodic antenna with coax feed |
| US3373434A (en) * | 1964-12-01 | 1968-03-12 | Sperry Rand Corp | Lightweight antenna formed from net of dielectric cord, having metalized sectors thereon |
| US3454950A (en) * | 1964-12-01 | 1969-07-08 | Jfd Electronics Corp | Multiple mode operational antennas employing reactive elements |
| US3369243A (en) * | 1965-01-18 | 1968-02-13 | Univ Illinois | Log-periodic antenna structure |
| US3550140A (en) * | 1967-06-23 | 1970-12-22 | Granger Associates | Log periodic rotating antenna |
| US3618110A (en) * | 1969-07-07 | 1971-11-02 | Communications Tech Corp | Minimum-height dipole-type vertically polarized log-periodic antenna |
| US4733243A (en) * | 1986-12-18 | 1988-03-22 | The United States Of America As Represented By The Secretary Of The Army | Broadband high frequency sky-wave antenna |
| CN109149054B (en) * | 2018-09-30 | 2023-11-14 | 北京大华恒威通信技术有限公司 | Automatic folding log periodic antenna |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3123827A (en) * | 1964-03-03 | Log periodic structure feed system | ||
| US3079602A (en) * | 1958-03-14 | 1963-02-26 | Collins Radio Co | Logarithmically periodic rod antenna |
| US2989749A (en) * | 1959-04-06 | 1961-06-20 | Collins Radio Co | Unidirectional frequency-independent coplanar antenna |
| US3101474A (en) * | 1960-11-25 | 1963-08-20 | Sylvania Electric Prod | Log periodic type antenna mounted on ground plane and fed by tapered feed |
| NL276499A (en) * | 1961-03-29 | |||
| US3212094A (en) * | 1961-05-31 | 1965-10-12 | Collins Radio Co | Vertically polarized unidirectional log periodic antenna over ground |
| US3179943A (en) * | 1962-02-12 | 1965-04-20 | James M Buzbee | Log periodic monopole array and image ground plane elements alternately connected toplural feed lines |
-
1962
- 1962-08-07 US US215339A patent/US3276027A/en not_active Expired - Lifetime
-
1963
- 1963-07-31 GB GB30443/63A patent/GB995396A/en not_active Expired
- 1963-08-06 FR FR943851A patent/FR1365189A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1365189A (en) | 1964-06-26 |
| US3276027A (en) | 1966-09-27 |
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