FR820782A - Shortwave communication system - Google Patents

Shortwave communication system

Info

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
Application number
Other languages
French (fr)
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Application granted granted Critical
Publication of FR820782A publication Critical patent/FR820782A/en
Expired legal-status Critical Current

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
FR820782D 1936-04-28 1937-04-14 Shortwave communication system Expired FR820782A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
SG11202008308YA (en) 2018-03-19 2020-09-29 Pivotal Commware Inc Communication of wireless signals through physical barriers
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
US11190266B1 (en) 2020-05-27 2021-11-30 Pivotal Commware, Inc. RF signal repeater device management 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
EP4278645A1 (en) 2021-01-15 2023-11-22 Pivotal Commware, Inc. Installation of repeaters for a millimeter wave communications network
WO2022164930A1 (en) 2021-01-26 2022-08-04 Pivotal Commware, Inc. Smart repeater systems
US11451287B1 (en) 2021-03-16 2022-09-20 Pivotal Commware, Inc. Multipath filtering for wireless RF signals
EP4367919A1 (en) 2021-07-07 2024-05-15 Pivotal Commware, Inc. Multipath repeater systems
WO2023205182A1 (en) 2022-04-18 2023-10-26 Pivotal Commware, Inc. Time-division-duplex repeaters with global navigation satellite system timing recovery

Cited By (1)

* Cited by examiner, † Cited by third party
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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