US2311472A - Antenna - Google Patents

Antenna Download PDF

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Publication number
US2311472A
US2311472A US396484A US39648441A US2311472A US 2311472 A US2311472 A US 2311472A US 396484 A US396484 A US 396484A US 39648441 A US39648441 A US 39648441A US 2311472 A US2311472 A US 2311472A
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United States
Prior art keywords
antenna
impedance
sections
impedances
series
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
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US396484A
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English (en)
Inventor
Rossenstein Hans Otto
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Individual
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Individual
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Publication of US2311472A publication Critical patent/US2311472A/en
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    • 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
    • H01Q9/18—Vertical disposition of the antenna
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • 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
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/32—Vertical arrangement of element
    • H01Q9/34—Mast, tower, or like self-supporting or stay-supported antennas

Definitions

  • the invention precludes these drawbacks and makes it possible to arrange the impedance to be inserted at some Adjustbly situated or easily accessible place of the antenna lead rather than at the place of connection itself. This is made possible without changing the conditions of radiation by connecting the series impedance arranged at the most suitable place with the open ends of the antenna lead at the desired place of connection by way of an RF two-wire line within the antenna lead.
  • One conductor of the two-wire line may consist of the antenna lead itself.
  • an inner lead with a tubular outer or external lead is to serve as the antenna, the external lead surrounding the internal lead from the desired place of connection to the impedance, the latter being directly connected with one of its terminals to the inner conductor and with the other te minal to the outer conductor.
  • impedances may be arranged at the same place in space, usually at the end of the antenna nearest ground, a special outer conductor being provided for each impedance.
  • the said special outer conductor extends to the corresponding place of connection.
  • the impedance under consideration is inserted between the said outer conductor and the antenna lead surrounded thereby.
  • FIG. 1 illustrates a vertical rod antenna A which comprises at its middle a coil L directly arranged at this point and connected in series for the purpose of decreasing the constructional length of the antenna as known in the prior art.
  • a coupling coil Connected to the bottom end of the antenna is a coupling coil which, together with a suitable coil connected in the feeder line F, forms the matching transformer T.
  • the matching transformer may be placed within a shield S if desired. This arrangement known in the prior art is replaced according to the invention by the arrangement shown in Fig. 2.
  • Coil L is replaced by an impedance L (for instance, another coil) which is accommodated in a shielding box K at the lower end of the antenna in which the tubular antenna conductor A terminates.
  • the ends of the antenna at the place of interruption herein again situated in the middle are connected with the ends of impedance L by means of a two-wire line D in the lower half of the antenna conductor A.
  • the small box K and thus the lower end of the antenna are connected with transformer T in the same way as in Fig. 1.
  • L its value is transformed by the line D with the result that the transformed value, instead of its actual value, appears at the space between the antenna conductors A and A.
  • the impedance L itself may very well be capacitive if the length of line D just happens to require this. It is most advantageous to place an entire oscillatory circuit in the small box K,
  • Impedance L has ample space in the small shielding box K, is protected from atmospheric inclemencies, screened, and adjustable in a simple manner.
  • one lead of the RF two-wire line D in the arrangement Fig. 2 may be replaced by the antenna lead itself.
  • Arrangements can then be made in such a manner that the antenna consists of a continuous, solid inner conductor J and :a tubular concentric outer con- This is doctor or lead R which surrounds the inner conductor from the small box K to the desired point of separation or break.
  • One end of the loading inductance L is connected to the lower end of the inner conductor 1, while the other end is associated with the lower end of the outer conductor or the small box K.
  • the free upper end of the inner conductor J and the outer conductor R serves as the radiator.
  • the free end of the inner conductor is, preferably made thicker so that the radiating parts at least have the same diameter as far as their size is concerned.
  • a number of impedances may be inserted at various places in the antenna lead or conductor. If, for instance, it is desired to insert a loading coil slightly above the middle as well as slightly below as shown in Fig. 4 (L1 and L2) in order to obtain a current distribution curve corresponding to the curve I shown next to the antenna (shortened antenna) then this arrangement may be effected according to the invention as shown in Fig. 5
  • the antenna consists of a continuous inner conductor J and two concentric, tubular outer conductors R1 and R2 which go from the base of the antenna up to the desired places of connection, while at the base they terminate in shielding boxes K1 and K2, respectively.
  • K1 is accommodated the impedance L1 connected between the inner conductor and K1, and in K2 is arranged the impedance Lz inserted between K1 and K2.
  • the values of the impedances L'1 and L: may be obtained from the impedance values of L1 and L2 by transformation to the places of connection by way of the corresponding two-wire lines.
  • Another shielding box K3 surrounds K1 and K2. The same also accommodates the matching transformer T for coupling to the transmitter and terminates in a counterpoise G (in place of ground).
  • the said inductances may be made tunable employing iron cores which may be shifted.
  • the iron cores may be shifted axially along the coils by means of a screw-driver or by means of fixed shafts which pass through openings in the screening boxes K1, K2, K3, and which have control knobs at their outer ends.
  • any desired number of impedances of any desired type may be inserted into and RF conductor or lead (in the exemplified embodiments it is an antenna, though the invention is not limited thereto since, for instance, also shielded conductors used for filtering purposes are often provided with series impedances) so that any desired current distributions or any desired filter characteristics may be obtained.
  • a short wave antenna including a plurality of coaxially arranged radiator sections, some of said sections being hollow, said. sections being connected together at their adjacent ends by series impedances, all of. said impedances being located at one end of said antenna in separate shielding boxes, the connections between said ends and said impedances being carried within the intervening ones of said radiator sections between said ends and said impedances.
  • a short Wave antenna including a plurality of coaxially arranged radiator sections, some of said sections being hollow, said sections being connected together at their adjacent ends by series impedances, all of said impedances being located at one end of said antenna in separate shielding boxes, the connections between said ends and said impedances being carried within the intervening ones of said radiator sections between said ends and said impedances and means for energizing said antenna having a connection to one end section.
  • a short wave antenna including a plurality of coaxially arranged radiator sections, some of said sections being hollow, said sections being connected together at their adjacent ends by series impedances, all of said impodances being located at one end of said antenna in separate shielding boxes, one within the other, the connections between said ends and said impedances being carried within the intervening ones of said radiator sections between said ends and said impedances and means for energizing said antenna having a connection to the outer of said shielding boxes.
  • a short wave antenna including a pair of coaxially arranged radiator sections, one of said sections being hollow, said sections being connected together at their adjacent ends by a series impedance, said series impedance being located at one end of said antenna in a shielding box, the connection between said end-s and said impedance being carried within the intervening one of said radiator sections and means for energizing said antenna having a connection to said one end section.
  • a short Wave antenna including a pair of vertically arranged coaxial radiator sections, the lower of said sections being hollow, said sections being connected together at their adjacent ends by a series impedance, said im-' pedanoe being located at the lower end of said antenna in a shielding box connected to said lower end, the connections between said adjacent ends and said impedance being carried within the intervening one of said radiator sections and means for energizing said antenna having a connection to said shielding box.
  • An antenna including a pair of coaxially arranged radiator sections, said sections being connected together at their adjacent ends by a series impedance, said series impedance being located at one end of said antenna within a shielding box connected to said one end.
  • An antenna including a pair of coaxially arranged radiator sections, said sections being connected together at their adjacent ends by a series impedance, said series impedance being located at one end of said antenna within a shielding box connected to said one end, the connections between said adjacent ends and said impedance being carried within the intervening one of said radiator sections, said one section being hollow.
  • An antenna including a pair of coaxially arranged radiator sections, said sections being connected together at their adjacent ends by a series impedance, said series impedance being located at one end of said antenna within a shielding box connected to said one end, the connections between said adjacent ends and said impedance being carried within the intervening one of said radiator sections, said one section being hollow, one of said sections being constituted by an extension of the other of said radiator sections within said hollow section and the other connection being constituted by the interior surface of said hollow section.

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  • Details Of Aerials (AREA)
US396484A 1940-01-31 1941-06-04 Antenna Expired - Lifetime US2311472A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE219820X 1940-01-31

Publications (1)

Publication Number Publication Date
US2311472A true US2311472A (en) 1943-02-16

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Application Number Title Priority Date Filing Date
US396484A Expired - Lifetime US2311472A (en) 1940-01-31 1941-06-04 Antenna

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US (1) US2311472A (de)
CH (1) CH219820A (de)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2492404A (en) * 1945-11-10 1949-12-27 Rca Corp Construction of ultra high frequency broad-band antennas
US2496242A (en) * 1944-07-22 1950-01-31 Philco Corp Antenna system
US2498655A (en) * 1943-12-30 1950-02-28 Int Standard Electric Corp Radio aerial
US2539680A (en) * 1945-11-26 1951-01-30 Rca Corp Ultra high frequency antenna
US2593474A (en) * 1944-10-03 1952-04-22 Us Sec War Antenna matching section
US2611082A (en) * 1948-07-07 1952-09-16 Scophony Baird Ltd Aerial for very high frequency radio receivers
US2666138A (en) * 1950-05-25 1954-01-12 Radiart Corp Antenna
US2750589A (en) * 1952-09-20 1956-06-12 Edward F Harris Vertically polarized high frequency antenna array
US2771604A (en) * 1951-04-03 1956-11-20 Samuel E Goldstein Vehicular short-wave antenna
US2913722A (en) * 1957-03-11 1959-11-17 Brueckmann Helmut Broad band vertical antenna
US2935606A (en) * 1957-02-08 1960-05-03 Avco Mfg Corp Transistorized portable communication set
US2990452A (en) * 1957-02-08 1961-06-27 Avco Mfg Corp Component-connected temperature-stabilized transistor amplifier circuit
US2993204A (en) * 1958-02-28 1961-07-18 Itt Two-band helical antenna
US3208069A (en) * 1962-04-05 1965-09-21 Brueckmann Helmut Antenna with controlled voltage distribution
US3445849A (en) * 1966-02-14 1969-05-20 Rca Corp Half wavelength monopole antenna with spaced loading coils
US4167011A (en) * 1976-12-22 1979-09-04 Hustler, Inc. Radio antenna construction
US4494122A (en) * 1982-12-22 1985-01-15 Motorola, Inc. Antenna apparatus capable of resonating at two different frequencies
US4504834A (en) * 1982-12-22 1985-03-12 Motorola, Inc. Coaxial dipole antenna with extended effective aperture
WO2005001989A2 (en) 2003-06-25 2005-01-06 The Board Of Governors For Higher Education System and method for providing a distributed loaded monopole antenna
US7782264B1 (en) 2006-03-28 2010-08-24 The Board Of Governors For Higher Education, State Of Rhode Island And Providence Plantations Systems and methods for providing distributed load monopole antenna systems
US20120026049A1 (en) * 2010-07-29 2012-02-02 Harris Corporation Multiband dismount antenna
US9130274B1 (en) 2007-03-22 2015-09-08 Board Of Education, State Of Rhode Island And Providence Plantations Systems and methods for providing distributed load monopole antenna systems

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1045481A (en) * 1962-02-16 1966-10-12 George Alfred Partridge Improvements in or relating to aerials
DE1516904B1 (de) * 1966-05-11 1971-06-24 Westdeutscher Rundfunk Selbststrahlender,durch Isolatoren unterteilter Antennenmast mit Fusspunktisolator
FR2501788A1 (fr) * 1981-03-12 1982-09-17 Calberson Ste Nle Transpor Rap Dispositif pour l'alimentation mixte au gaz pauvre et au gazole d'un moteur diesel

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498655A (en) * 1943-12-30 1950-02-28 Int Standard Electric Corp Radio aerial
US2496242A (en) * 1944-07-22 1950-01-31 Philco Corp Antenna system
US2593474A (en) * 1944-10-03 1952-04-22 Us Sec War Antenna matching section
US2492404A (en) * 1945-11-10 1949-12-27 Rca Corp Construction of ultra high frequency broad-band antennas
US2539680A (en) * 1945-11-26 1951-01-30 Rca Corp Ultra high frequency antenna
US2611082A (en) * 1948-07-07 1952-09-16 Scophony Baird Ltd Aerial for very high frequency radio receivers
US2666138A (en) * 1950-05-25 1954-01-12 Radiart Corp Antenna
US2771604A (en) * 1951-04-03 1956-11-20 Samuel E Goldstein Vehicular short-wave antenna
US2750589A (en) * 1952-09-20 1956-06-12 Edward F Harris Vertically polarized high frequency antenna array
US2935606A (en) * 1957-02-08 1960-05-03 Avco Mfg Corp Transistorized portable communication set
US2990452A (en) * 1957-02-08 1961-06-27 Avco Mfg Corp Component-connected temperature-stabilized transistor amplifier circuit
US2913722A (en) * 1957-03-11 1959-11-17 Brueckmann Helmut Broad band vertical antenna
US2993204A (en) * 1958-02-28 1961-07-18 Itt Two-band helical antenna
US3208069A (en) * 1962-04-05 1965-09-21 Brueckmann Helmut Antenna with controlled voltage distribution
US3445849A (en) * 1966-02-14 1969-05-20 Rca Corp Half wavelength monopole antenna with spaced loading coils
US4167011A (en) * 1976-12-22 1979-09-04 Hustler, Inc. Radio antenna construction
US4494122A (en) * 1982-12-22 1985-01-15 Motorola, Inc. Antenna apparatus capable of resonating at two different frequencies
US4504834A (en) * 1982-12-22 1985-03-12 Motorola, Inc. Coaxial dipole antenna with extended effective aperture
JP2007525084A (ja) * 2003-06-25 2007-08-30 ザ・ボード・オブ・ガバナーズ・フォー・ハイヤー・エデュケーション，ステイト・オブ・ロード・アイランド・アンド・プロビデンス・プランテーションズ 分布負荷型モノポールアンテナを提供するためのシステムおよび方法
EP1636874A4 (de) * 2003-06-25 2007-05-23 Rhode Island Education System und verfahren zur bereitstellung einer verteilten belasteten monopolantenne
US20070132649A1 (en) * 2003-06-25 2007-06-14 The Board Of Governors For Higher Education, State Of Rhode Island And Providence Plantations System and method for providing a distributed loaded monopole antenna
WO2005001989A2 (en) 2003-06-25 2005-01-06 The Board Of Governors For Higher Education System and method for providing a distributed loaded monopole antenna
US7358911B2 (en) 2003-06-25 2008-04-15 Board of Governors for Higher Education, State of Rhode Island and the Providence Plantations System and method for providing a distributed loaded monopole antenna
EP2312694A1 (de) 2003-06-25 2011-04-20 The Board of Governors for Higher Education System und Verfahren zur Bereitstellung einer verteilt belasteten Monopolantenne
JP4926702B2 (ja) * 2003-06-25 2012-05-09 ザ・ボード・オブ・ガバナーズ・フォー・ハイヤー・エデュケーション，ステイト・オブ・ロード・アイランド・アンド・プロビデンス・プランテーションズ 分布負荷型モノポールアンテナを提供するためのシステムおよび方法
US7782264B1 (en) 2006-03-28 2010-08-24 The Board Of Governors For Higher Education, State Of Rhode Island And Providence Plantations Systems and methods for providing distributed load monopole antenna systems
US9130274B1 (en) 2007-03-22 2015-09-08 Board Of Education, State Of Rhode Island And Providence Plantations Systems and methods for providing distributed load monopole antenna systems
US20120026049A1 (en) * 2010-07-29 2012-02-02 Harris Corporation Multiband dismount antenna
US8462064B2 (en) * 2010-07-29 2013-06-11 Harris Corporation Multiband dismount antenna

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Publication number Publication date
CH219820A (de) 1942-02-28

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