GB608949A - Lens for ultra-high frequency electric waves - Google Patents

Lens for ultra-high frequency electric waves

Info

Publication number
GB608949A
GB608949A GB10213/45A GB1021345A GB608949A GB 608949 A GB608949 A GB 608949A GB 10213/45 A GB10213/45 A GB 10213/45A GB 1021345 A GB1021345 A GB 1021345A GB 608949 A GB608949 A GB 608949A
Authority
GB
United Kingdom
Prior art keywords
lens
wave
incident
april
coated
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
GB10213/45A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB608949A publication Critical patent/GB608949A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/02—Refracting or diffracting devices, e.g. lens, prism

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

608,949. Lenses for radio waves. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 23, 1945, No. 10213. Convention date, April 22, 1944. [Classes 40 (v) and 40 (vii)] A lens for use with U.H.F. electromagnetic waves is composed of wave-refracting material, the incident surface of which is treated or formed to reduce reflection. A plano-convex lens may be shaped as shown in Figs. 1 and 2, in which 1 is a thin body of wave-refracting material having incident and emergent surfaces 3, 5. Both surfaces are coated to a depth corresponding to #/4 (or to an odd number of quarterwave lengths) with a material having a dielectric constant which approximates the square root of that of the wave-refracting material. Such a lens may be inserted between two conductive sheets 13, 15, Fig. 4, constituting a form of wave-guide, two ends of the sheets being curved to form a linear aperture 17. A double convex lens may be formed with similar coatings on each face, Fig. 6 (not shown). In a further modification, Fig. 10 (not shown), the incident surface, instead of being coated or pitted, is inclined or tapered in the direction of the incident energy.
GB10213/45A 1944-04-22 1945-04-23 Lens for ultra-high frequency electric waves Expired GB608949A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US532381A US2415352A (en) 1944-04-22 1944-04-22 Lens for radio-frequency waves

Publications (1)

Publication Number Publication Date
GB608949A true GB608949A (en) 1948-09-23

Family

ID=24121537

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10213/45A Expired GB608949A (en) 1944-04-22 1945-04-23 Lens for ultra-high frequency electric waves

Country Status (3)

Country Link
US (1) US2415352A (en)
BE (1) BE474864A (en)
GB (1) GB608949A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3151324A (en) * 1957-03-18 1964-09-29 Mcmillan Corp Of North Carolin Wide-band electromagneticradiation absorber

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2524292A (en) * 1944-04-18 1950-10-03 Rca Corp Radio vision system with high-speed scanner for short radio waves
US2549721A (en) * 1944-05-16 1951-04-17 Henry A Straus Antenna system of variable directivity and high resolution
US2577463A (en) * 1944-05-17 1951-12-04 Rca Corp Device for transmission and reception of very short electrical waves
US2617934A (en) * 1945-05-02 1952-11-11 Edward B Mcmillan Antenna housing
US2561077A (en) * 1946-04-04 1951-07-17 Honeywell Regulator Co Radiation pyrometer
US2562277A (en) * 1946-04-08 1951-07-31 Bell Telephone Labor Inc Metallic lens directive antenna system
US2547416A (en) * 1946-12-19 1951-04-03 Bell Telephone Labor Inc Dielectric lens
US2579324A (en) * 1947-05-16 1951-12-18 Bell Telephone Labor Inc Metallic structure for delaying propagated waves
US2576181A (en) * 1947-10-28 1951-11-27 Rca Corp Focusing device for centimeter waves
US2585562A (en) * 1947-12-04 1952-02-12 Bell Telephone Labor Inc Directive antenna system
NL73721C (en) * 1948-02-03
US2571612A (en) * 1948-02-24 1951-10-16 Robert H Rines Stereoscopic image reception by millimetric radiation
US2959783A (en) * 1948-03-16 1960-11-08 Iams Harley Scanning antennas using dielectric with variable refraction
US2698901A (en) * 1948-03-17 1955-01-04 Wilkes Gilbert Back-radiation reflector for microwave antenna systems
US2636125A (en) * 1948-04-10 1953-04-21 Bell Telephone Labor Inc Selective electromagnetic wave system
DE894421C (en) * 1948-10-03 1953-10-26 Siemens Ag Arrangement for diathermic irradiation
US2669657A (en) * 1949-11-19 1954-02-16 Bell Telephone Labor Inc Electromagnetic lens
NL90090C (en) * 1950-06-23
US2716190A (en) * 1951-02-23 1955-08-23 Dow Chemical Co Dielectric material
US2822542A (en) * 1954-10-18 1958-02-04 Motorola Inc Directive antenna
US3122742A (en) * 1957-11-22 1964-02-25 Diamond Antenna & Microwave Co Radio frequency to light frequency transducer
NL244999A (en) * 1958-11-21
US3359560A (en) * 1962-08-17 1967-12-19 Armstrong Cork Co Cylindrical dielectric lens
US3441784A (en) * 1967-04-26 1969-04-29 Varian Associates Ridged dielectric window with titanium suboxide solely on ridges
US3550139A (en) * 1968-07-05 1970-12-22 North American Rockwell Hemispherical dielectric lens type antenna employing a uniform dielectric
US4181774A (en) * 1978-12-19 1980-01-01 The United States Of America As Represented By The Secretary Of The Air Force Electromagnetic interference filter window
US4556070A (en) * 1983-10-31 1985-12-03 Varian Associates, Inc. Hyperthermia applicator for treatment with microwave energy and ultrasonic wave energy
NO157480C (en) * 1985-02-28 1988-03-30 Sintef HYBRID MODE HORNANTENNE.
US5017939A (en) * 1989-09-26 1991-05-21 Hughes Aircraft Company Two layer matching dielectrics for radomes and lenses for wide angles of incidence
US7541994B2 (en) * 2006-05-17 2009-06-02 Raytheon Company Refractive compact range
US9722316B2 (en) * 2014-07-07 2017-08-01 Google Inc. Horn lens antenna
CN111919135B (en) * 2018-03-23 2024-06-07 三菱电机株式会社 Radar apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE354930A (en) * 1933-08-31
US2240157A (en) * 1938-05-25 1941-04-29 American Optical Corp Ophthalmic lens
US2273447A (en) * 1939-09-07 1942-02-17 Bell Telephone Labor Inc Unidirective energy radiating system
US2361589A (en) * 1940-08-14 1944-10-31 American Optical Corp Lens
US2331716A (en) * 1940-09-26 1943-10-12 Eastman Kodak Co Nonreflecting coating

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3151324A (en) * 1957-03-18 1964-09-29 Mcmillan Corp Of North Carolin Wide-band electromagneticradiation absorber

Also Published As

Publication number Publication date
BE474864A (en)
US2415352A (en) 1947-02-04

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