GB581724A - Improvements in or relating to antenna systems - Google Patents
Improvements in or relating to antenna systemsInfo
- Publication number
- GB581724A GB581724A GB571741A GB571741A GB581724A GB 581724 A GB581724 A GB 581724A GB 571741 A GB571741 A GB 571741A GB 571741 A GB571741 A GB 571741A GB 581724 A GB581724 A GB 581724A
- Authority
- GB
- United Kingdom
- Prior art keywords
- antenna
- horn
- points
- transmission line
- loop circuit
- 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
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
-
- 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)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
581,724. Directive radio signalling. STANDARD TELEPHONES & CABLES, Ltd., and WILLOUGHBY, E. O. May 2, 1941, No. 5717. [Class 40 (v)] In an overlapping- beam or other directional system in which a horn 1 is associated with an antenna A, Z, B forming part of a tuned loop circuit in which standing waves are set up, the position of maximum current in the antenna is varied by alternately earthing the points D1, D2, thereby altering the direction of the principal radiation lobe. The antenna includes a non-radiating reactance Z, such as a cod or folded conductor, so that the currents in the parts A1, A2 are in phase. The points D1, D2 are so chosen that the impedance of transmission line T is matched to the radiation resistance of the antenna system as seen along paths CA and CB. The loop circuit may be tuned at L in the usual way. The outer conductor of the transmission line is connected to the horn. The arrangement may be used for transmitting or receiving waves polarized in the plane of the paper.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB571741A GB581724A (en) | 1941-05-02 | 1941-05-02 | Improvements in or relating to antenna systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB571741A GB581724A (en) | 1941-05-02 | 1941-05-02 | Improvements in or relating to antenna systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB581724A true GB581724A (en) | 1946-10-23 |
Family
ID=9801307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB571741A Expired GB581724A (en) | 1941-05-02 | 1941-05-02 | Improvements in or relating to antenna systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB581724A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4349840A (en) | 1980-11-25 | 1982-09-14 | Rca Corporation | Apparatus for automatically steering an electrically steerable television antenna |
-
1941
- 1941-05-02 GB GB571741A patent/GB581724A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4349840A (en) | 1980-11-25 | 1982-09-14 | Rca Corporation | Apparatus for automatically steering an electrically steerable television antenna |
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