GB522492A - Improvements in aerial systems for wireless communication - Google Patents

Improvements in aerial systems for wireless communication

Info

Publication number
GB522492A
GB522492A GB36326/38A GB3632638A GB522492A GB 522492 A GB522492 A GB 522492A GB 36326/38 A GB36326/38 A GB 36326/38A GB 3632638 A GB3632638 A GB 3632638A GB 522492 A GB522492 A GB 522492A
Authority
GB
United Kingdom
Prior art keywords
core
coil
earthed
screen
finely divided
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
GB36326/38A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB522492A publication Critical patent/GB522492A/en
Priority to ES0179488A priority Critical patent/ES179488A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
    • B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C1/00—Ammonium nitrate fertilisers
    • C05C1/02—Granulation; Pelletisation; Stabilisation; Colouring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/20—Time-division multiplex systems using resonant transfer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)
  • Details Of Aerials (AREA)

Abstract

522,492. Aerials. STANDARD TELEPHONES & CABLES, Ltd. (Polydoroff, W. J.). Dec. 13, 1938, No. 36326. [Class 40 (v)] The " pick-up " factor of a frame or loop aerial for receiving or transmitting electromagnetic waves is improved by providing it with a ferro magnetic core 4 composed of finely divided particles of iron compressed and bound together in known manner. The core is preferably of toroidal form and when used in conjunction with a receiver is preferably earthed. The aerial coil is preferably wound in the form of a spiral or as a solenoid 1 in slots 5 in a bakelite former. The core may project at both ends beyond the coil and may be rotatable therewith or separately. The core when earthed may be provided with an inner strip of metal, the core and the strip being split. Alternatively the core may be grooved and the coil wound over the groove. When the coil is surrounded by a screen the core may be replaced by a sheath of finely divided iron placed between the screen and the coil.
GB36326/38A 1938-12-13 1938-12-13 Improvements in aerial systems for wireless communication Expired GB522492A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES0179488A ES179488A1 (en) 1938-12-13 1947-08-28 IMPROVEMENTS IN ANTENNA SYSTEMS FOR RADIOCOMMUNICATIONS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB522492X 1938-12-13

Publications (1)

Publication Number Publication Date
GB522492A true GB522492A (en) 1940-06-19

Family

ID=10463192

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36326/38A Expired GB522492A (en) 1938-12-13 1938-12-13 Improvements in aerial systems for wireless communication

Country Status (4)

Country Link
US (1) US2266262A (en)
BE (1) BE482157A (en)
CH (1) CH260212A (en)
GB (1) GB522492A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438680A (en) * 1943-03-11 1948-03-30 Wladimir J Polydoroff Loop antenna apparatus
US2442310A (en) * 1943-06-14 1948-05-25 Wladimir J Polydoroff Directional antenna system
US2460492A (en) * 1946-10-30 1949-02-01 Hoffman Radio Corp Loop inductance compensator
US2581348A (en) * 1948-04-10 1952-01-08 Int Standard Electric Corp Antenna
DE914984C (en) * 1950-08-05 1954-07-12 Max Grundig Rotatable magnetic directional antenna
US2824306A (en) * 1950-10-04 1958-02-18 Admiral Corp Antenna
US2915752A (en) * 1953-12-29 1959-12-01 Raytheon Co Directional antenna
US2953785A (en) * 1956-08-02 1960-09-20 Gasaccumulator Svenska Ab Arrangement for radio direction finding
US3078462A (en) * 1958-07-18 1963-02-19 Julius Herman One-turn loop antenna
US4441498A (en) * 1982-05-10 1984-04-10 Cardio-Pace Medical, Inc. Planar receiver antenna coil for programmable electromedical pulse generator
US4703278A (en) * 1984-10-09 1987-10-27 Texaco Inc. Well logging disc coil receiving means and method
JP3481575B2 (en) * 2000-09-28 2003-12-22 寛児 川上 antenna
US8922440B2 (en) * 2004-12-21 2014-12-30 Q-Track Corporation Space efficient magnetic antenna method
US8436780B2 (en) 2010-07-12 2013-05-07 Q-Track Corporation Planar loop antenna system
US9997845B2 (en) 2004-12-21 2018-06-12 Q-Track Corporation Embedded symmetric multiple axis antenna system with isolation among the multiple axes
US7825543B2 (en) 2005-07-12 2010-11-02 Massachusetts Institute Of Technology Wireless energy transfer
EP2306616B2 (en) 2005-07-12 2023-06-21 Massachusetts Institute of Technology (MIT) Wireless non-radiative energy transfer
US9634730B2 (en) 2007-07-09 2017-04-25 Qualcomm Incorporated Wireless energy transfer using coupled antennas
US8362651B2 (en) 2008-10-01 2013-01-29 Massachusetts Institute Of Technology Efficient near-field wireless energy transfer using adiabatic system variations

Also Published As

Publication number Publication date
BE482157A (en)
CH260212A (en) 1949-02-28
US2266262A (en) 1941-12-16

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