GB534066A - Horns for the transmission and reception of ultra-short electromagnetic waves - Google Patents

Horns for the transmission and reception of ultra-short electromagnetic waves

Info

Publication number
GB534066A
GB534066A GB32811/39A GB3281139A GB534066A GB 534066 A GB534066 A GB 534066A GB 32811/39 A GB32811/39 A GB 32811/39A GB 3281139 A GB3281139 A GB 3281139A GB 534066 A GB534066 A GB 534066A
Authority
GB
United Kingdom
Prior art keywords
waves
horn
type
frequency
horns
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
Application number
GB32811/39A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB534066A publication Critical patent/GB534066A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/02—Waveguide horns

Abstract

534,066. Directive wireless signalling. STANDARD TELEPHONES & CABLES, Ltd. Dec. 22, 1939, No. 32811. Convention date, Jan. 9. [Class 40 (v)] A two-wire, coaxial, or hollow-pipe transmission line, for radiating or receiving short waves, is terminated by a " horn ", which has a flare-angle of predetermined value for waves of a given frequency, and is fitted with an exciting or absorbing " antenna ", so related to the flare-angle, and so positioned relatively to the throat and apex of the horn that waves of the predetermined frequency and up to a certain higher order of frequency are propagated whilst waves other than those desired are substantially attentuated. Figs. 1, 2 and 3 illustrate typical shapes of horns, and show different ways of disposing and coupling the antenna 14 and feed-line 10, 12 to them. The horns are suitable for equi-signal navigational work, or for " blind-landing " beams, owing to the absence of undesirable secondary lobes of radiation; and also for " guided " waves of the H01 and H10 type, where the electric and magnetic fields respectively lie parallel to the Y axis, Fig. 4. For a given flareangle # 0 , Fig. 4, a selected value of the cutoff length P 0 will permit waves of the H01 type to form and travel freely through the horn, but will attenuate or filter-out waves of higher order, e.g. of the H03, H05 &c. type. Optimum values for the constants of the horn, and the distance of the antenna 14 from its apex are specified for handling waves of a desired type and frequency with maximum attenuation of other waves.
GB32811/39A 1939-01-09 1939-12-22 Horns for the transmission and reception of ultra-short electromagnetic waves Expired GB534066A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US249910A US2316151A (en) 1939-01-09 1939-01-09 Electromagnetic horn

Publications (1)

Publication Number Publication Date
GB534066A true GB534066A (en) 1941-02-26

Family

ID=22945533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32811/39A Expired GB534066A (en) 1939-01-09 1939-12-22 Horns for the transmission and reception of ultra-short electromagnetic waves

Country Status (3)

Country Link
US (1) US2316151A (en)
FR (1) FR862785A (en)
GB (1) GB534066A (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2467578A (en) * 1939-01-09 1949-04-19 Research Corp Electromagnetic horn
BE479624A (en) * 1942-08-13
US2433074A (en) * 1943-07-02 1947-12-23 Raytheon Mfg Co High-frequency coupling device
US2552334A (en) * 1945-03-02 1951-05-08 Rca Corp Electron discharge device and associated circuit
US2656535A (en) * 1945-08-06 1953-10-20 Leland K Neher Nonreflecting background for testing microwave equipment
US2962677A (en) * 1945-10-04 1960-11-29 Bell Telephone Labor Inc Wave guide joint
US2721263A (en) * 1945-11-13 1955-10-18 Roy C Spencer Curved throat scan horn for the transmission of electromagnetic energy
US2598475A (en) * 1945-12-17 1952-05-27 Raytheon Mfg Co Antenna system
US2624803A (en) * 1946-01-17 1953-01-06 Robert A Howard Device for measuring radiofrequency power
US2791770A (en) * 1946-04-08 1957-05-07 Jacob R Risser Tapered electromagnetic horn
BE486457A (en) * 1947-12-27
US2688732A (en) * 1949-05-05 1954-09-07 Bell Telephone Labor Inc Wave guide
US2755465A (en) * 1949-10-07 1956-07-17 Marconi Wireless Telegraph Co Aerials
US2851686A (en) * 1956-06-28 1958-09-09 Dev Engineering Corp Electromagnetic horn antennas
US3031661A (en) * 1956-10-31 1962-04-24 Bendix Corp Microwave antenna feed for circular polarization
AT335569B (en) * 1974-03-21 1977-03-25 Siemens Ag Oesterreich CIRCUIT ARRANGEMENT FOR WIRELESS TRANSMISSION OF IGNITION SIGNALS TO CONTROLLABLE SEMI-CONDUCTIVE VALVES, IN PARTICULAR THYRISTORS
JPS58176896A (en) * 1982-04-10 1983-10-17 豊田合成株式会社 Microwave heater
US4861124A (en) * 1987-05-13 1989-08-29 Sanders Associates, Inc. Dual-section spatial modulation transmitter
US8581794B1 (en) * 2010-03-04 2013-11-12 Qualcomm Incorporated Circular antenna array systems
US9722316B2 (en) * 2014-07-07 2017-08-01 Google Inc. Horn lens antenna
TWI678838B (en) * 2018-07-03 2019-12-01 緯創資通股份有限公司 Antenna waveguide and antenna module thereof

Also Published As

Publication number Publication date
US2316151A (en) 1943-04-13
FR862785A (en) 1941-03-14

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