US1633775A - Antenna arrangement for short-wave apparatus - Google Patents

Antenna arrangement for short-wave apparatus Download PDF

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Publication number
US1633775A
US1633775A US140378A US14037826A US1633775A US 1633775 A US1633775 A US 1633775A US 140378 A US140378 A US 140378A US 14037826 A US14037826 A US 14037826A US 1633775 A US1633775 A US 1633775A
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wave
antenna
short
antenna arrangement
wave apparatus
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US140378A
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Esau Abraham
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
    • H03H2/005—Coupling circuits between transmission lines or antennas and transmitters, receivers or amplifiers
    • H03H2/006—Transmitter or amplifier output circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube

Definitions

  • This invention relates to antenna arrangements particularly for short-wave apparatus. r
  • the antenna is connected to the oscillation circuit either inductively or through capacity.
  • the antenna is connected by a metallic .conductor.
  • a further feature of the invention consists in the connecting of a plurality of antennae to a number of nodes of voltage whereby a reflecting member associated with the anis equal to a quarter of a wave length or to an uneven multiple of same. If the antenna length differs from these values the oscillations cease.
  • This fact as a means for controlling the radiated energy of shortwave senders by changing the length of the antenna at will. This is preferably effected by adding or subtracting a section of the antenna by means of a key, switch or the like.
  • Fig. 1 shows an arrangement in which one antenna is employed while Fig. 2 shows an arrangement in which a plurality of antennae are used.
  • 11 denotes the source of anode current
  • D and D are high frequency choking coils
  • R is a non-inductive resistance
  • W a heating current resistance
  • E the heat ing or filament battery.
  • C is a condenser and L a wave carrying member or coil of the oscillation circuit.
  • the wave carrying coil L of Fig. 1 there is a node of voltage (2 to which the antenna A is connected.
  • the wave carrying coil L of Fig. 2 there are two nodes of potential (1 and a, to which the antennae A and A are connected.
  • Antenna arrangement for shortwave radiation comprising a closed oscillation circuit including a Wave-carrying coil isolated from the earth, and a wave radiator in direct conducting connection with a node of voltage of the Wave carrying coil in said closed circuit.
  • Antenna arrangement for short-wave radiation comprising a wave-carrying coil insulated from the earth, and wave radiators in direct conducting connection with nodes of voltage of the wave-carrying coil, whereby aoreflecting member associated with an antenna member is obtained.
  • Antenna arrangement for shortwave radiation comprising a closed oscillation circuit including a wave-carrying coil isolated from the earth, and wave-radiators in direct conducting connection with nodes of voltage of the wavecarrying coil in said closed circuit, whereby a reflecting member associated with an antenna member is obtained.
  • Antenna arrangement for short-Wave radiation comprising a closed oscillation circuit including a wave-carrying coil isolated from the earth, a section of antenna in direct conducting connection with a node of voltage of the wave-carrying coil in said closed circuit, another section of antenna, and a device for connecting and disconnecting said sections, whereby the radiation is controlled.

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  • Toys (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Description

June 28, 1927. A. EsAU ANTENNA ARRANGBIENT FOR SHORT WAVE APPARATUS Filed Oct. 8, 1926 Patented June. 28, 1927.
UNITED STATES ABRAHAM, ESAU, or JENA, GERMANY.
ANTENNA ARRANGEMENT For. SHORLWAVE Humans.
Application filed October 8, 1926, Serial No. 140,378, and in Germany 0ctober 7, 1925.
This invention relates to antenna arrangements particularly for short-wave apparatus. r
In known short-wave apparatus the antenna is connected to the oscillation circuit either inductively or through capacity. In accordance with my invention the antenna is connected by a metallic .conductor. Experiments with antennae of this kind have shown that the best radiation of short-waves is obtained when the connection of the wave carrying member or coil of the oscillation circuit to the earth through a conductor or condenser is omitted and the antenna is connected to a node of voltage in a wave carrying member of the apparatus.
A further feature of the invention consists in the connecting of a plurality of antennae to a number of nodes of voltage whereby a reflecting member associated with the anis equal to a quarter of a wave length or to an uneven multiple of same. If the antenna length differs from these values the oscillations cease. I employ this fact as a means for controlling the radiated energy of shortwave senders by changing the length of the antenna at will. This is preferably effected by adding or subtracting a section of the antenna by means of a key, switch or the like. An advantage gained hereby is that there is no consumption of energy in the intervals between the closures of the signalling key.
The invention is illustrated in the drawing in which Fig. 1 shows an arrangement in which one antenna is employed while Fig. 2 shows an arrangement in which a plurality of antennae are used. I In both figures, which show oscillation producers, 11 denotes the source of anode current, D and D are high frequency choking coils, R is a non-inductive resistance, W a heating current resistance, and E the heat ing or filament battery. C is a condenser and L a wave carrying member or coil of the oscillation circuit. In the wave carrying coil L of Fig. 1 there is a node of voltage (2 to which the antenna A is connected. In the wave carrying coil L of Fig. 2 there are two nodes of potential (1 and a, to which the antennae A and A are connected. To
enable the length or lengths of the antenna or antennae to be changed they may be made of sect-ions. In the drawing sections A are shown that can be connected to and disconnected from the antenna proper by means of keys or switches T.
t-enna the results hereinbefore mentioned are obtained.
I claim:
1. Antenna arrangement for shortwave radiation, comprising a closed oscillation circuit including a Wave-carrying coil isolated from the earth, and a wave radiator in direct conducting connection with a node of voltage of the Wave carrying coil in said closed circuit.
2. Antenna arrangement for short-wave radiation, comprising a wave-carrying coil insulated from the earth, and wave radiators in direct conducting connection with nodes of voltage of the wave-carrying coil, whereby aoreflecting member associated with an antenna member is obtained.
3. Antenna arrangement for shortwave radiation, comprising a closed oscillation circuit including a wave-carrying coil isolated from the earth, and wave-radiators in direct conducting connection with nodes of voltage of the wavecarrying coil in said closed circuit, whereby a reflecting member associated with an antenna member is obtained.
4. Antenna arrangement for short-Wave radiation, comprising a closed oscillation circuit including a wave-carrying coil isolated from the earth, a section of antenna in direct conducting connection with a node of voltage of the wave-carrying coil in said closed circuit, another section of antenna, and a device for connecting and disconnecting said sections, whereby the radiation is controlled.
In testimony whereof I have afiixed my signature.
ABRAHAM ESAU.
By thus adding to 60 .or subtracting from the length of the an-
US140378A 1925-10-07 1926-10-08 Antenna arrangement for short-wave apparatus Expired - Lifetime US1633775A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE259579X 1925-10-07

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US1633775A true US1633775A (en) 1927-06-28

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US140378A Expired - Lifetime US1633775A (en) 1925-10-07 1926-10-08 Antenna arrangement for short-wave apparatus

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US (1) US1633775A (en)
FR (1) FR210416A (en)
GB (1) GB259579A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2492794A (en) * 1944-08-28 1949-12-27 Eastman Oil Well Survey Co Methods of and apparatus for transmitting intelligence to the surface from well bores
US5187488A (en) * 1989-11-14 1993-02-16 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Tunable high-frequency antenna

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2492794A (en) * 1944-08-28 1949-12-27 Eastman Oil Well Survey Co Methods of and apparatus for transmitting intelligence to the surface from well bores
US5187488A (en) * 1989-11-14 1993-02-16 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Tunable high-frequency antenna

Also Published As

Publication number Publication date
FR210416A (en)
GB259579A (en) 1927-09-01

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