BE470391A - - Google Patents
Info
- Publication number
- BE470391A BE470391A BE470391DA BE470391A BE 470391 A BE470391 A BE 470391A BE 470391D A BE470391D A BE 470391DA BE 470391 A BE470391 A BE 470391A
- Authority
- BE
- Belgium
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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US642723A US2736894A (en) | 1946-01-22 | 1946-01-22 | Directive antenna systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE470391A true BE470391A (US07122603-20061017-C00294.png) |
Family
ID=24577731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE470391D BE470391A (US07122603-20061017-C00294.png) | 1946-01-22 |
Country Status (8)
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE973175C (de) * | 1949-02-20 | 1960-01-07 | Siemens Ag | Wanderfeldroehre mit Antenne |
| US3071770A (en) * | 1953-07-20 | 1963-01-01 | Wilkes Gilbert | Parabolic dish antenna with aperture blocking correction |
| US2982956A (en) * | 1956-09-10 | 1961-05-02 | Lab For Electronics Inc | Radar system |
| US3146451A (en) * | 1956-10-29 | 1964-08-25 | Lab For Electronics Inc | Dielectric lens giving perfect focal points at selected distance off-axis |
| US2977464A (en) * | 1959-04-23 | 1961-03-28 | Carl T Engberg | Multiple antenna using passive reflectors |
| US3220006A (en) * | 1961-06-05 | 1965-11-23 | Bazar | Ground plane vhf antenna comprising blade - type dipole configuration obtained by reflecting monopole in ground plane |
| US3167776A (en) * | 1962-05-31 | 1965-01-26 | Sylvania Electric Prod | Dielectric foam antenna |
| US3299430A (en) * | 1965-07-26 | 1967-01-17 | Rohde & Schwarz | Parallel dipole array supported on insulator having a low dielectric constant |
| US3649934A (en) * | 1970-07-17 | 1972-03-14 | Us Navy | Quasi-optical low-pass absorption type filtering system |
| US4194209A (en) * | 1977-12-30 | 1980-03-18 | The United States Of America As Represented By The Secretary Of The Air Force | Broadband waveguide lens antenna and method of fabrication |
| US4224626A (en) * | 1978-10-10 | 1980-09-23 | The United States Of America As Represented By The Secretary Of The Navy | Ellipticized lens providing balanced astigmatism |
| US4591864A (en) * | 1983-06-13 | 1986-05-27 | The United States Of America As Represented By The Secretary Of The Navy | Frequency independent twisted wave front constant beamwidth lens antenna |
| DE3337049A1 (de) * | 1983-10-12 | 1985-05-09 | Gesellschaft für Schwerionenforschung mbH, 6100 Darmstadt | Feststoff mit besonderen elektrischen eigenschaften und verfahren zur herstellung eines solchen feststoffes |
| US4787722A (en) * | 1986-04-10 | 1988-11-29 | Fresnel Technologies, Inc. | Fresnel lens with aspiteric grooves |
| US5675349A (en) * | 1996-02-12 | 1997-10-07 | Boeing North American, Inc. | Durable, lightweight, radar lens antenna |
| US7187505B2 (en) * | 2002-10-07 | 2007-03-06 | Fresnel Technologies, Inc. | Imaging lens for infrared cameras |
| US6948831B1 (en) | 2004-01-20 | 2005-09-27 | Shams Naqvi | Recessed light assembly adapted for use with motion detector |
| US8009113B2 (en) * | 2007-01-25 | 2011-08-30 | Cushcraft Corporation | System and method for focusing antenna signal transmission |
| US20110299813A1 (en) * | 2010-06-04 | 2011-12-08 | Southwell William H | High speed optical interconnects |
| EP2993958B1 (de) | 2014-09-04 | 2017-11-22 | Georg Fischer GmbH | Rinneninduktionsofen |
| DE102017219372A1 (de) * | 2017-10-27 | 2019-05-02 | Robert Bosch Gmbh | Radarsensor mit mehreren Hauptstrahlrichtungen |
Family Cites Families (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1693021A (en) * | 1928-11-27 | Diagnostic instrument | ||
| DE616601C (de) * | 1928-10-20 | 1935-08-01 | Lorenz Akt Ges C | Verfahren zur Rundfunkuebertragung mittels ultrakurzer Wellen |
| FR726531A (fr) * | 1931-01-21 | 1932-05-30 | Materiel Telephonique | Perfectionnements aux systèmes électriques à haute fréquence, tels que les systèmes de signalisation à ondes très courtes |
| US1906546A (en) * | 1931-07-10 | 1933-05-02 | Int Communications Lab Inc | Echelon grating for reflecting ultra short waves |
| US1990649A (en) * | 1931-12-17 | 1935-02-12 | Telefunken Gmbh | Transmitting or receiving arrangement for concentrated electric waves |
| US2078302A (en) * | 1933-08-31 | 1937-04-27 | Rca Corp | Modulating system for short waves |
| US2129712A (en) * | 1933-12-09 | 1938-09-13 | American Telephone & Telegraph | Transmission of energy effects by guided electric waves in a dielectric medium |
| US2206923A (en) * | 1934-09-12 | 1940-07-09 | American Telephone & Telegraph | Short wave radio system |
| NL45527C (US07122603-20061017-C00294.png) * | 1935-12-16 | |||
| US2206683A (en) * | 1936-05-16 | 1940-07-02 | Rca Corp | Ultra short wave attenuator and directive device |
| NL47992C (US07122603-20061017-C00294.png) * | 1936-09-11 | |||
| US2129669A (en) * | 1937-03-30 | 1938-09-13 | Bell Telephone Labor Inc | Guided wave transmission |
| US2290665A (en) * | 1937-05-06 | 1942-07-21 | Walter A Arnesen | Diagnostic instrument |
| US2283935A (en) * | 1938-04-29 | 1942-05-26 | Bell Telephone Labor Inc | Transmission, radiation, and reception of electromagnetic waves |
| US2298272A (en) * | 1938-09-19 | 1942-10-13 | Research Corp | Electromagnetic horn |
| US2255042A (en) * | 1939-01-03 | 1941-09-09 | Research Corp | Electromagnetic horn |
| US2240941A (en) * | 1939-06-20 | 1941-05-06 | Bell Telephone Labor Inc | Oscillation source of the spark discharge gap type |
| US2273447A (en) * | 1939-09-07 | 1942-02-17 | Bell Telephone Labor Inc | Unidirective energy radiating system |
| US2369808A (en) * | 1940-06-08 | 1945-02-20 | American Telephone & Telegraph | Short-wave radio transmission |
| US2283568A (en) * | 1940-06-18 | 1942-05-19 | Bell Telephone Labor Inc | Ultra high frequency system |
| US2398095A (en) * | 1940-08-31 | 1946-04-09 | Rca Corp | Electromagnetic horn radiator |
| US2310294A (en) * | 1941-03-01 | 1943-02-09 | Rca Corp | Electromagnetic horn antenna |
| US2460401A (en) * | 1941-11-28 | 1949-02-01 | Bell Telephone Labor Inc | Directive microwave radio antenna |
| US2415807A (en) * | 1942-01-29 | 1947-02-18 | Sperry Gyroscope Co Inc | Directive electromagnetic radiator |
| US2369268A (en) * | 1942-05-27 | 1945-02-13 | Rca Corp | Radio repeater |
| US2427005A (en) * | 1943-11-06 | 1947-09-09 | Bell Telephone Labor Inc | Directive microwave antenna |
| US2442951A (en) * | 1944-05-27 | 1948-06-08 | Rca Corp | System for focusing and for directing radio-frequency energy |
-
0
- NL NL72078D patent/NL72078C/xx active
- BE BE470391D patent/BE470391A/xx unknown
- FR FR937854D patent/FR937854A/fr not_active Expired
-
1946
- 1946-01-22 US US642723A patent/US2736894A/en not_active Expired - Lifetime
-
1947
- 1947-01-02 GB GB161/47A patent/GB650767A/en not_active Expired
- 1947-01-21 ES ES176675A patent/ES176675A1/es not_active Expired
- 1947-01-24 CH CH279123D patent/CH279123A/fr unknown
-
1948
- 1948-12-31 DE DEP28905D patent/DE830361C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2736894A (en) | 1956-02-28 |
| GB650767A (en) | 1951-03-07 |
| DE830361C (de) | 1952-02-04 |
| FR937854A (US07122603-20061017-C00294.png) | 1948-09-23 |
| CH279123A (fr) | 1951-11-15 |
| NL72078C (US07122603-20061017-C00294.png) | |
| ES176675A1 (es) | 1947-03-01 |
