FR820782A - Shortwave communication system - Google Patents
Shortwave communication systemInfo
- Publication number
- FR820782A FR820782A FR820782DA FR820782A FR 820782 A FR820782 A FR 820782A FR 820782D A FR820782D A FR 820782DA FR 820782 A FR820782 A FR 820782A
- Authority
- FR
- France
- Prior art keywords
- communication system
- shortwave communication
- shortwave
- communication
- 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
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
- H01Q21/26—Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre
-
- 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
- H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
- H01Q21/205—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path providing an omnidirectional coverage
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US76745A US2131108A (en) | 1936-04-28 | 1936-04-28 | Short wave communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
FR820782A true FR820782A (en) | 1937-11-18 |
Family
ID=22133916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR820782D Expired FR820782A (en) | 1936-04-28 | 1937-04-14 | Shortwave communication system |
Country Status (4)
Country | Link |
---|---|
US (1) | US2131108A (en) |
BE (1) | BE421257A (en) |
FR (1) | FR820782A (en) |
GB (1) | GB487708A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE919247C (en) * | 1939-11-15 | 1954-10-18 | Rca Corp | Device for the mutual adaptation of two high-frequency transmission lines |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE758471C (en) * | 1939-05-23 | 1953-10-19 | Telefunken Gmbh | Antenna arrangement |
US2419855A (en) * | 1939-06-22 | 1947-04-29 | Roosenstein Hans Otto | Arrangement adapted to suppress radio frequency currents on conductors |
BE452813A (en) * | 1942-10-22 | |||
US2419552A (en) * | 1943-06-12 | 1947-04-29 | Standard Telephones Cables Ltd | Radio antenna |
US2583953A (en) * | 1946-03-29 | 1952-01-29 | John D Kraus | Electrical apparatus |
US2624000A (en) * | 1946-05-03 | 1952-12-30 | Rca Corp | Antenna system |
US2546322A (en) * | 1948-04-14 | 1951-03-27 | Bell Telephone Labor Inc | Balanced to unbalanced coupling |
US2637533A (en) * | 1949-09-24 | 1953-05-05 | Andrew Corp | Multi-v fm antenna |
USRE23960E (en) * | 1950-05-12 | 1955-03-08 | lorusso | |
US2566287A (en) * | 1950-09-16 | 1951-08-28 | Jr Lewis H Finneburgh | Television antenna system |
US2825061A (en) * | 1951-11-21 | 1958-02-25 | Gabriel Co | Wave radiator |
US2860341A (en) * | 1953-10-07 | 1958-11-11 | Itt | Ultra high frequency television antenna |
US3007164A (en) * | 1955-04-22 | 1961-10-31 | Ross A Davis | Slot antenna which is fed at two points |
US3268899A (en) * | 1964-04-23 | 1966-08-23 | James D Walden | Cylindrical tube antenna with matching transmission line |
FR2634598B1 (en) * | 1988-07-22 | 1990-10-05 | Thomson Lgt | AN OMNIDIRECTIONAL ANTENNA, IN PARTICULAR FOR THE TRANSMISSION OF BROADCASTING OR TELEVISION SIGNALS IN THE UHF BAND, AND RADIATION SYSTEM IN THE FORM OF A GROUPING OF THESE ANTENNAS |
US5204688A (en) * | 1988-07-22 | 1993-04-20 | Thomson-Lgt Laboratoire General Des Telecommunications | Omnidirectional antenna notably for the emission of radio or television broadcasting signals in the decimetric waveband, and radiating system formed by a grouping of these antennas |
GB8919283D0 (en) * | 1989-08-24 | 1989-10-04 | Phase Track Limited | Active loop antenna |
US20110001677A1 (en) * | 2009-07-02 | 2011-01-06 | Richard Strnad | Stereo fed digital antenna |
CN111903063B (en) | 2018-03-19 | 2022-08-12 | 皮沃塔尔卡姆瓦雷股份有限公司 | Transmitting wireless signals across a physical barrier |
US10862545B2 (en) | 2018-07-30 | 2020-12-08 | Pivotal Commware, Inc. | Distributed antenna networks for wireless communication by wireless devices |
US10522897B1 (en) | 2019-02-05 | 2019-12-31 | Pivotal Commware, Inc. | Thermal compensation for a holographic beam forming antenna |
US10468767B1 (en) * | 2019-02-20 | 2019-11-05 | Pivotal Commware, Inc. | Switchable patch antenna |
US10734736B1 (en) | 2020-01-03 | 2020-08-04 | Pivotal Commware, Inc. | Dual polarization patch antenna system |
US11069975B1 (en) | 2020-04-13 | 2021-07-20 | Pivotal Commware, Inc. | Aimable beam antenna system |
JP2023527384A (en) | 2020-05-27 | 2023-06-28 | ピヴォタル コムウェア インコーポレイテッド | Method for managing RF signal repeater devices for 5G wireless networks |
US11026055B1 (en) | 2020-08-03 | 2021-06-01 | Pivotal Commware, Inc. | Wireless communication network management for user devices based on real time mapping |
US11297606B2 (en) | 2020-09-08 | 2022-04-05 | Pivotal Commware, Inc. | Installation and activation of RF communication devices for wireless networks |
CA3208262A1 (en) | 2021-01-15 | 2022-07-21 | Pivotal Commware, Inc. | Installation of repeaters for a millimeter wave communications network |
JP2024505881A (en) | 2021-01-26 | 2024-02-08 | ピヴォタル コムウェア インコーポレイテッド | smart repeater system |
US11451287B1 (en) | 2021-03-16 | 2022-09-20 | Pivotal Commware, Inc. | Multipath filtering for wireless RF signals |
KR20240041939A (en) | 2021-07-07 | 2024-04-01 | 피보탈 컴웨어 인코포레이티드 | Multipath repeater systems |
US11937199B2 (en) | 2022-04-18 | 2024-03-19 | Pivotal Commware, Inc. | Time-division-duplex repeaters with global navigation satellite system timing recovery |
-
0
- BE BE421257D patent/BE421257A/xx unknown
-
1936
- 1936-04-28 US US76745A patent/US2131108A/en not_active Expired - Lifetime
-
1937
- 1937-03-19 GB GB8116/37D patent/GB487708A/en not_active Expired
- 1937-04-14 FR FR820782D patent/FR820782A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE919247C (en) * | 1939-11-15 | 1954-10-18 | Rca Corp | Device for the mutual adaptation of two high-frequency transmission lines |
Also Published As
Publication number | Publication date |
---|---|
US2131108A (en) | 1938-09-27 |
GB487708A (en) | 1938-06-24 |
BE421257A (en) |
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