US1964048A - Power line for antenne - Google Patents

Power line for antenne Download PDF

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Publication number
US1964048A
US1964048A US648079A US64807932A US1964048A US 1964048 A US1964048 A US 1964048A US 648079 A US648079 A US 648079A US 64807932 A US64807932 A US 64807932A US 1964048 A US1964048 A US 1964048A
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US
United States
Prior art keywords
currents
phasal
line
radiation
power line
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 - Lifetime
Application number
US648079A
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English (en)
Inventor
Gerth Felix
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.)
Alcatel Lucent Deutschland AG
C Lorenz AG
Original Assignee
Standard Elektrik Lorenz AG
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 Standard Elektrik Lorenz AG filed Critical Standard Elektrik Lorenz AG
Application granted granted Critical
Publication of US1964048A publication Critical patent/US1964048A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0123—Frequency selective two-port networks comprising distributed impedance elements together with lumped impedance elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole

Definitions

  • power or transmission lines which usually consist of two parallel conductors. These are traversed in phase opposition by the high frequency to be transmitted, so that the external fields are cancelled and therefore there is no radiation. It may, however, happen that the conductors are also traversed by co-phasal currents in addition to the currents in phase opposition. This is the case, for example, with lines which serve to feed antenna systems. In this case the line is situated in the field of the radiating antennae. The closely adjacent conductors of these power lines are induced by this field in the same direction, so that on account of such radiation-coupling co-phasal currents flow.
  • these currents cause the power line to radiate and thereby the directional characteristic of the antenna arrangement may be undesirably infiuenced. It is the object of the present invention to control these co-phasal currents. According to the invention these co-phasal currents are prevented from flowing or are neutralized, or their current loop is so located that the radiation characteristic of the antenna arrangement is improved or a desired radiation diagram is obtained.
  • Figure 1 is a schematic elevation of one of such embodiments
  • Figure 2 the ground plan of a second embodiment
  • Figure 3 is a diagram of a third embodiment
  • Figure 4 is a schematic elevation of a fourth embodiment.
  • an antenna A of any antenna arrangement is fed from the transmitter S over the power line E.
  • a coil arrangement L that consists of two interwound coils, which are wound in the same direction and are closely coupled together.
  • One of these coils is inserted in each of the two conductors of the line E.
  • the inductances of these coils neutralize one another for the counter-phasal currents coming from the transmitter so that in this desired direction the power can fiow unhindered. With the co-phasal currents induced by the radiation of the antenna A, however, the inductances are added, so that the currents find a resistance which does not permit them to flow.
  • the coils L may be repeated in the line E at certain intervals, which are preferably equal.
  • Figure 2 shows a horizontal fiat antenna struc ture comprising a central emitter Z and outer emitters A, which surround the emitter Z and 0, 1932, Serial No. 648,079
  • the antenna A consists of dipoles D, whose centres of radiation are situated at V4 height above the ground. A represents the wave-length.
  • tuning means A are inserted, which are so arranged that the current loop of the co-phasal currents is situated as near as possible to the dipoles.
  • the co-phasal currents produce a field in the line E outwards, which is approximately identical with the field generated by the dipoles D.
  • the radiation fields of the dipoles and of the line E may be made more or less to coincide and consequently the radiation characteristic of the antenna arrangement is improved and undesired field distortions are substantially avoided.
  • the current loop of the co-phasal currents need not necessarily coincide with the radiation centres, but may, for example, be placed in the vicinity of the earths surface.
  • a suitable choice of the phase that is by a certain construction of the line E or by the insertion of phase shifting means, amplification of the radiation diagram is obtained in a similar manner as though a short vertical conductor were situated on the ground, and tuned in conjunction with earth.
  • any desired intensification of the radiation diagram may be obtained.
  • a power line for antennae that consists of conductors parallel to each other, the combination with an antenna structure of means for causing counter-phasal currents to flow in these conductors, and means for locating the current loop of the co-phasal currents in the vicinity of the radiation centre of said antenna structure and for causing the direction of the co-phasal currents adjacent the antenna structure to be such as to augment the radiation field thereof.
  • a power line for antennae which consists of conductors parallel to one another
  • the combination with an antenna structure of means for causing counter-phasal currents to flow in these conductors, and means for locating the current loop of the co-phasal currents at a point which is distant from the radiation centre of the said antenna structure.
  • an antenna structure a transmission line in the radiation field of said antenna structure and comprising parallel conductors, means for supplying high frequency currents over said transmission line to said antenna structure, and means for so locating the loop of and phasing the co-phasal currents induced in the conductors of said transmission line with respect to the current in the antenna structure as to improve the radiation characteristic of the antenna structure.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Near-Field Transmission Systems (AREA)
US648079A 1932-05-31 1932-12-20 Power line for antenne Expired - Lifetime US1964048A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEL81290D DE592184C (de) 1932-05-31 1932-05-31 Energieleitung fuer Antennen
DE476279X 1936-03-04

Publications (1)

Publication Number Publication Date
US1964048A true US1964048A (en) 1934-06-26

Family

ID=25944282

Family Applications (1)

Application Number Title Priority Date Filing Date
US648079A Expired - Lifetime US1964048A (en) 1932-05-31 1932-12-20 Power line for antenne

Country Status (4)

Country Link
US (1) US1964048A (fr)
DE (1) DE592184C (fr)
FR (2) FR743903A (fr)
GB (2) GB408323A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419907A (en) * 1940-09-27 1947-04-29 Siemens Brothers & Co Ltd Means for reducing impedance effects in grounded communication circuits
US2470307A (en) * 1944-02-25 1949-05-17 Radio Patents Corp High-frequency matching transformer
US2509057A (en) * 1943-11-27 1950-05-23 Radio Patents Corp Device for intercoupling singleended and double-ended circuits
US3283311A (en) * 1961-11-01 1966-11-01 Sperry Rand Corp Magnetic element read-out utilizing transmission line sensing circuit
WO2010052206A1 (fr) * 2008-11-05 2010-05-14 Tomtom International B.V. Appareil pour agencement d’antenne, appareil de réception et procédé d’atténuation d’un signal commun
WO2011003468A1 (fr) * 2009-07-10 2011-01-13 Tomtom International B.V. Appareil d’agencement d’antenne, appareil de réception et procédé réduisant un signal d’interférence de mode commun
DE102010007451B3 (de) * 2010-02-10 2011-03-17 Siemens Aktiengesellschaft Gegentaktverstärker mit induktiver Gleichtaktentkopplung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973564C (de) * 1942-10-13 1960-03-31 Patelhold Patentverwertung Kuenstliche Hochfrequenzleitung
DE1943890C3 (de) * 1967-12-12 1985-05-09 Lindenmeier, Heinz, Prof. Dr.-Ing., 8033 Planegg Symmetrische Antenne in Form einer Leiterschleife mit zwischen ihre Eingangsklemmen geschalteten aktiven Dreipol

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419907A (en) * 1940-09-27 1947-04-29 Siemens Brothers & Co Ltd Means for reducing impedance effects in grounded communication circuits
US2509057A (en) * 1943-11-27 1950-05-23 Radio Patents Corp Device for intercoupling singleended and double-ended circuits
US2470307A (en) * 1944-02-25 1949-05-17 Radio Patents Corp High-frequency matching transformer
US3283311A (en) * 1961-11-01 1966-11-01 Sperry Rand Corp Magnetic element read-out utilizing transmission line sensing circuit
WO2010052206A1 (fr) * 2008-11-05 2010-05-14 Tomtom International B.V. Appareil pour agencement d’antenne, appareil de réception et procédé d’atténuation d’un signal commun
WO2011003468A1 (fr) * 2009-07-10 2011-01-13 Tomtom International B.V. Appareil d’agencement d’antenne, appareil de réception et procédé réduisant un signal d’interférence de mode commun
DE102010007451B3 (de) * 2010-02-10 2011-03-17 Siemens Aktiengesellschaft Gegentaktverstärker mit induktiver Gleichtaktentkopplung
WO2011098336A1 (fr) 2010-02-10 2011-08-18 Siemens Aktiengesellschaft Amplificateur symétrique à couplage inductif en mode commun
US8653894B2 (en) 2010-02-10 2014-02-18 Siemens Aktiengesellschaft Push-pull amplifier having inductive common mode decoupling

Also Published As

Publication number Publication date
FR743903A (fr) 1933-04-08
FR48240E (fr) 1937-11-23
GB408323A (en) 1934-04-09
GB476279A (en) 1937-12-06
DE592184C (de) 1934-02-02

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