GB640181A - Improvements in or relating to ultra high frequency wave transmission systems - Google Patents
Improvements in or relating to ultra high frequency wave transmission systemsInfo
- Publication number
- GB640181A GB640181A GB25887/47A GB2588747A GB640181A GB 640181 A GB640181 A GB 640181A GB 25887/47 A GB25887/47 A GB 25887/47A GB 2588747 A GB2588747 A GB 2588747A GB 640181 A GB640181 A GB 640181A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wave
- guide
- guides
- wall
- flared
- 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
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
-
- 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
Abstract
640,181. Wave-guides. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Sept. 23,1947, No. 25887. Convention date, Sept. 24, 1946. [Class 40 (viii)] [Also in Group XL (c)] In a'high-frequency transmission system including a coaxial line having inner and outer conductors and a wave-guide section, the inner conductor extends into the waveguide at a point intermediate its ends in the form of a tapered tongue having its base connected to an inner wall of the wave-guide. In Fig. 3, the inner conductor of a transmission line TL is flared outwardly in a plane at right angles to the drawing, and the base of the tongue so formed is connected at X to the wall of a U-shaped waveguide W1, W2, thus providing a gradual transfer of the characteristic impedance. To provide an in-phase feed where the guides W1, W2 merge at W into a horn H, guide W2 is given a 180 degree twist. Alternatively, each guide may be given an opposite 90 degree twist, or the electrical lengths of the guide may differ by one half wave-length. In Fig. 6, the inner conductor 15 of line TL broadens out into a tongue 28, the base of which is as broad as the wall of wave-guide W to which it is -joined. Figs. 8 and 9 show a vertical tubular antenna having diametrically opposed pairs of half-wave resonant slots 40, 50 fed by wave-guide sections 41, 51. A coaxial feeder TL1 has a flared outer conductor 45 joined to one wall of wave-guides 41, 51 while the inner conductor 44 is also flared, and its base is joined at J to the inside of the cylinder at the junction point of wave-guides 41, 51. Successive pairs of radiating slots are arranged relatively at 90 degrees, and the transmission lines TL1, TL2, joining them to a main feed TL differ in length by a quarter wave-length. Fig. 10 shows an array of radiating slots 62, 64 in a flat conducting sheet. The slots are energized by the flared out inner conductors 74 of a branched coaxial line TL. The horns may be used for transmitting or receiving.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US698953A US2556094A (en) | 1946-09-24 | 1946-09-24 | High-frequency apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB640181A true GB640181A (en) | 1950-07-12 |
Family
ID=24807312
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB25887/47A Expired GB640181A (en) | 1946-09-24 | 1947-09-23 | Improvements in or relating to ultra high frequency wave transmission systems |
Country Status (2)
Country | Link |
---|---|
US (1) | US2556094A (en) |
GB (1) | GB640181A (en) |
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GB690380A (en) * | 1948-12-15 | 1953-04-22 | British Thomson Houston Co Ltd | Improvements relating to rotating joints for wave guides |
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US2749545A (en) * | 1951-08-01 | 1956-06-05 | Itt | Electromagnetic horn |
US2805415A (en) * | 1952-08-02 | 1957-09-03 | Sperry Rand Corp | Microwave antenna system |
US2913723A (en) * | 1956-01-23 | 1959-11-17 | Csf | Variable pattern radar aerial |
US2963701A (en) * | 1957-09-25 | 1960-12-06 | Antenna Systems Inc | Electrically steerable horn antenna system |
US2928092A (en) * | 1957-10-09 | 1960-03-08 | Sylvania Electric Prod | Electromagnetic lens |
RU2595554C2 (en) * | 2014-12-11 | 2016-08-27 | Федеральное государственное бюджетное учреждение науки Институт общей физики им. А.М. Прохорова Российской академии наук | Outlet unit of plasma relativistic microwave pulses source with conversion of wave type |
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US2425716A (en) * | 1937-07-24 | 1947-08-19 | Research Corp | Electromagnetic horn |
US2292496A (en) * | 1939-05-19 | 1942-08-11 | Telefunken Gmbh | Transmission line circuit |
US2284434A (en) * | 1941-02-24 | 1942-05-26 | Rca Corp | Antenna |
US2401751A (en) * | 1942-03-17 | 1946-06-11 | Bell Telephone Labor Inc | Coupling system |
US2437281A (en) * | 1944-07-19 | 1948-03-09 | Sperry Corp | High-frequency radiant energy apparatus |
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