GB583496A - Improvements in wide frequency band antennae - Google Patents
Improvements in wide frequency band antennaeInfo
- Publication number
- GB583496A GB583496A GB7480/44A GB748044A GB583496A GB 583496 A GB583496 A GB 583496A GB 7480/44 A GB7480/44 A GB 7480/44A GB 748044 A GB748044 A GB 748044A GB 583496 A GB583496 A GB 583496A
- Authority
- GB
- United Kingdom
- Prior art keywords
- feeder
- outer conductor
- conductor
- resonator
- aerial
- 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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
-
- 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
- H01Q9/20—Two collinear substantially straight active elements; Substantially straight single active elements
- H01Q9/22—Rigid rod or equivalent tubular element or elements
-
- 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
- H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
583,496. Aerials. STANDARD TELEPHONES & CABLES, Ltd., and WILLOUGHBY, E. O. April 21, 1944, No. 7480. [Class 40 (v)] A short aerial for aircraft comprises a pair of magnetically coupled resonators enclosed in a streamlined hollow conductor 4, and tuned to the signal frequency. One resonator is of the coaxial type and comprises the outer conductor 4 and a pair of parallel rods 1 (of which only the more distant one is seen in Fig. 5) forming' the inner conductor. These are about #/5 long and terminate in two metal masses 15, 16, which are separated by insulation 13, 14 from the outer conductor 4, the capacity between them and it being adjustable by means of screw-mounted discs 27, 28 co-operating with tongues 25, 26. The masses 15, 16 are extended by streamlined metal end caps 29, 30. The second resonator also is coaxial and comprises the outer conductor 4 and a flat strip 9 which lies between the rods 1 and forms the inner conductor. The strip 9 is connected to the outer conductor 4 conductively at its righthand end and capacitively at its left-hand end, the capacity being adjustable by means of a screw-mounted disc 23. For sending, the aerial is fed by means of a #/4 coaxial feeder 7, 8, which may be streamlined by means of a vane which turns in the wind. The sheath 7 of the feeder is connected to the outer con, ductor 4 of the aerial while its core 8 is connected to a metal plate 20 which is capacitively connected to the strip 9 through an insulating disc 21, and to the sheath 7 of the feeder through insulation 19. The resonators oscillate as dipoles and have equal values of Q. The resonator 9, 4 is thus excited by the feeder 7, 8 and is magnetically coupled to the first resonator 1, 4, the value of the coupling factor being somewhat greater than the critical value so as to produce a band-pass effect. The magnetic coupling can be varied by adjusting the distance apart, Fig. 6 (not shown), of the two rods 1. Radiation is emitted by the outer conductor 4 forming an open-ended transmission line with the ground. For receiving, the conductor 9 may be connected through an inert rectifier at a point of relatively low potential to the core of the feeder, Fig. 7 (not shown), or through a diode at its open end to the outer conductor 4, Fig. 8 (not shown).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7480/44A GB583496A (en) | 1944-04-21 | 1944-04-21 | Improvements in wide frequency band antennae |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7480/44A GB583496A (en) | 1944-04-21 | 1944-04-21 | Improvements in wide frequency band antennae |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB583496A true GB583496A (en) | 1946-12-19 |
Family
ID=9833926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7480/44A Expired GB583496A (en) | 1944-04-21 | 1944-04-21 | Improvements in wide frequency band antennae |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB583496A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3238858A1 (en) * | 1981-10-28 | 1983-05-05 | TDK Electronics Co., Ltd., Tokyo | DIELECTRIC CERAMIC MATERIAL |
-
1944
- 1944-04-21 GB GB7480/44A patent/GB583496A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3238858A1 (en) * | 1981-10-28 | 1983-05-05 | TDK Electronics Co., Ltd., Tokyo | DIELECTRIC CERAMIC MATERIAL |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB638020A (en) | Antenna | |
| US2454766A (en) | Broad band antenna | |
| US2359620A (en) | Short wave antenna | |
| GB541870A (en) | Improved antenna systems | |
| GB1343498A (en) | Multifrequency antenna system | |
| GB575534A (en) | Improvements in or relating to antennas for ultra high frequency electromagnetic waves | |
| US2129852A (en) | Antenna for an airplane with a metallic body | |
| GB635343A (en) | Improvements in radio antennas | |
| US3365721A (en) | Current discontinuity device | |
| GB580569A (en) | Improvements in aerial systems | |
| US2644090A (en) | Recessed slot antenna | |
| GB721098A (en) | Improvements in and relating to dual frequency radio antennae | |
| US2543085A (en) | Wide frequency band antenna | |
| GB583496A (en) | Improvements in wide frequency band antennae | |
| US2509253A (en) | Vertical antenna array | |
| US3267478A (en) | Tunable ferromagnetic rod loop antenna | |
| GB600663A (en) | Antenna structure | |
| US2243426A (en) | Ultra high frequency system | |
| GB762415A (en) | Improvements in or relating to aerials | |
| US2963704A (en) | Antenna | |
| US2486872A (en) | Receiving antenna | |
| US3324476A (en) | Broad band antenna | |
| US2521763A (en) | Electron discharge device of the electron velocity modulation type | |
| GB651812A (en) | Improvements in or relating to aerial systems | |
| GB693435A (en) | Improvements in or relating to radio antenna arrangements |