US1819904A - Antenna regulator - Google Patents

Antenna regulator Download PDF

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Publication number
US1819904A
US1819904A US212574A US21257427A US1819904A US 1819904 A US1819904 A US 1819904A US 212574 A US212574 A US 212574A US 21257427 A US21257427 A US 21257427A US 1819904 A US1819904 A US 1819904A
Authority
US
United States
Prior art keywords
antenna
impedance
relay
action
vibratory
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
US212574A
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English (en)
Inventor
Joseph E Love
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Priority to US212574A priority Critical patent/US1819904A/en
Priority to FR660719D priority patent/FR660719A/fr
Application granted granted Critical
Publication of US1819904A publication Critical patent/US1819904A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/16—Automatic frequency control where the frequency control is accomplished by mechanical means, e.g. by a motor

Definitions

  • My present invention relates to means for controlling the resonant wave length' of an antenna system.
  • Vfhile my above-mentioned patent discloses a very satisfactory means for accomplishing the desired result my present inventionhas for its purpose to provide means which may be more economically constructed and which at the same time is sufliciently ⁇ rapid in its operation to effect the desired adjustment of the antenna in response to sudden impedance changes such as occur during stormy weather conditions.
  • Fig. 1 is a representation of one form of my invention
  • Fig. 2 shows a cross sectional view of a preferred form of clutch which I employ in connection therewith.
  • VThe ⁇ form of my invention shown in Fig. 1 and Fig. 3 represents a modification.
  • I have indicated at 1 a well-known type of high frequency inductor alternator having a plurality of stationary armature windings 2 and a rotary inductor 3, the latter being driven by a constant speed machine 4.
  • Certain of the armature windings 2 are connected to the primary windings of a transformer 5, the secondary winding of which is connected in series relation with an antenna 6.
  • a saturated core regulator or magnetic amplilier 12 l is employed.
  • This magnetic amplifier is of well-known construction and comprises a pair of high frequency windings 13 which are connected through condensers 14 and 15 to a coil 16 which is in inductive relation to a portion of the antenna circuit. If desired this coil may constitute a third winding upon the transformer 5.
  • a winding18 in inductive relation with the windings 13 upon the magnetic amplilier, is supplied with direct cur- -rent from a source 19 through a Contact engagement with the contacts 52 and 53 during this normal vibration of the member 39, with the result that the coils 3l and 32 of -the magnetic clutch remain deenergized during this period.
  • a pair of electron discharge devices 47 and 50 each comprising the usual anode, cathode and grid are employed.
  • the anodes or plate member of the two discharge devices are connected to the secondary windings l0 and 11 in such a Way that the electromotive forces supplied to the two anodes will be in phase with each other.
  • the plate circuit of each discharge devife is comnleted through one of the windings 46 or 49.
  • the grid elements of the discharge devices are connected to one ofthe armature windings of the inductor alternator l.
  • a resistor 56 and condensers 57 and 58 are connected in circuit with the armature winding of the alternator so that the phase relation of the electromotive forces supplied to the two grids may be adjusted relatively to one another and relatively to the plate electromotive fo ree as desired.
  • the electromotive force supplied to the plate member of each dischargedevice 47 and 50 many differ in phase from the electromotive force supplied to the associated grid member by an amount less than 90 degrees and the difference in phase between the grid and plate electromotive forces of the twodischarge devices may be equal.
  • the capacitance of the antenna is, for example, decreased below normal coil 49 will be energized for a longer period and at a higher value than coil 46. Member39 will, therefore, lag longer at pole piece 4l than at 40.
  • the relay 37 will be energized with currents of one. polarity for longer periods than with the other polarity. This causes the armature of the relay 37 to engage its contact 52, thereby energizing the coil 3l which in turn attracts the disk 27 into frictional engagement with the disk 23 and causes the shaft 2l to rotate in a direction to cor'- rect the antenna impedance.
  • the vibratory member 39 will lag against pole piece 46 and the armature of the relay 3l' will be mov-ed into engagement with the contacts 53.
  • the coil 32 of the magnetic clutch 22 will then be energized thereby moving the disk 28 into frictional engagement with the disk 24 and causing the shaft y21 to rotate in the opposite direction, thereby correcting the impedance of the antenna.
  • Fig. 2 I have shown a further illustration of a magnetic clutch which is employed in connection with my invention.
  • this lf represents a shaft which is adapted to be driven at a constant speed by means of a motor 25 and 6l is a balance wheel of large inertia which is employed for the purpose of maintaining a constant speed.
  • the sleeves 29 and 30 are each shown loosely mounted upon the shaft 21 and having connected therewith mitre gears 62 and 63. These gears are shown in mesh with the mitre gear 64 which is mounted. upon the shaft 60. By this arrangement the sleeve 29 and 30 are driven at a constant speed in opposite directions, whereas normally the shaft 21 does not rotate.
  • the disks 27 and 28 are mountedupon the shaft 2l and are adapted for slight lateral movement with respect thereto. r)The coils 31 and 32 which are suitably enclosed in insulating material together with the cooperating disks are all enclosed in a suitable housing 65, the coils being suspended out of contact with the rotating members and circumfercntially about sleeves 29 and 30.
  • circuit including conductor 33, normally closed contacts of relay 3l, armature of the motor ano normally closed contacts of relay 3Q.
  • rEhe actuating coils of the relays 3l and 32 correspond to the actual:- ing coils 3l and 32 of the magnetic clutch shown in Fig. l, and are similarly controlled from the relay 37 of Fig. l.
  • rThe energizing circuit conductors 33, 3st and 55 and contacts 52 and 53 for purposes of clearness, are similarly numbered in both figures. lf, due to a change in antenna impedance. the armature of the relay 37 engages the contacts 52, relay 3l Will be energized, thereby open ing its normally closed contacts and closing its normally open contacts.
  • the armature of the relay 37 Will interrupt the circuit of the relay This relay will then return to its normal position, thereby short circuiting' the armature of the motor and causing the motor to stop. lf the relay 37 engages its contact 53 then the relay 32 will be energized which opens its normally closed contacts and closes a ⁇ circuit leading from the negative side of the source of potential through conductor 3d, lower contacts of the relay 32, field Winding 66 and conduct r 33 back to the opposite side of the'source of potential 35.
  • an antenna, kregulating means therefor having a rotatable element, a vibratory member, means independent of the antenna impedance for Vproducing normal vibratory action of said member, means for modifying the action of said vibratory member in accordance with impedance variations in said antenna and means for rotating said element in either direction dependent on the modified action of said vibratory member.
  • an antenna in combination, an antenna, regulating means therefor, a vib-ratory member, means independent of the antenna impedance for producinfr normal vibratory action of vsaid member, means for modifying the action of said vibratory member in accordance With impedance variations in said antenna, means responsive to the modified action of said vibratory member and means for controlling said regulating means dependent upon the action ofv said last mentioned means.
  • an antenna, regulating means therefor including a rotatable element, a driving means and clutching means having oppositely rotating members normally actuated by said driving means, said clutching means being connected to operate responsively to impedance changes in said antenna to connect said rotatable element to one of said oppositely rotating members for rotation in either direction.
  • an antenna regulating means therefor including a movable element, a driving means, means for detuning said antenna, clutching means connected to operate responsively to impedance changes in said antenna to connect said movable element to said driving means and means for rendering said clutching means unresponsive to impedance variations produced by said detuning means.
  • an antenna regulating means therefor including a movable element, clutching means for operating said movable element, a vvibratory member, means independent of said antenna impedance for producing normal vibratorv action of said member, means for modifying the action of said vibratory member in accordance with impedance variations in said antenna, and means responsive to the modified action of said member for controlling said clutching means.
  • an antenna regulating means therefor including a movable element, clutching means for operating said movable element, means 'for detuning said antenna.
  • a vibratorv member means for modifying the action of said vibratory member in accordance With impedance changes in said antenna.
  • Vregulating means therefor including a rotatable element, a driving means, clutching ⁇ means for connecting said element to said driving means for operation in either direction, -means for detuning said antenna.
  • means responsive to impedance variations in said antenna for controlling said clutching means and means for rendering said impedance responsive means inoperative during operation of said detuning means.
  • an antenna regulating means therefor including a rotatable element, a continuously rotating driving means, clutching means for connecting said rotatable element to said driving means for rotation in either direction, a vibratory member, means independent of said antenna impedance for producing normal vibratory action of said member, means for modifying the action of said vibratory member in accordance with impedance variations in said antenna and means responsive to the modified action of said member for controlling said clutching means.
  • an antenna regulating means therefor, a vibratory member, means independent of said antenna impedance forl producing normal vibratory action of said member, means for modifying the action of said vibratory member in accordance with impedance variations in said antenna and clutching means responsive to the modified action of said member to control said regulatlng means.

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  • Details Of Aerials (AREA)
US212574A 1927-08-12 1927-08-12 Antenna regulator Expired - Lifetime US1819904A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US212574A US1819904A (en) 1927-08-12 1927-08-12 Antenna regulator
FR660719D FR660719A (fr) 1927-08-12 1928-08-11 Perfectionnements apportés au réglage des antennes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US212574A US1819904A (en) 1927-08-12 1927-08-12 Antenna regulator

Publications (1)

Publication Number Publication Date
US1819904A true US1819904A (en) 1931-08-18

Family

ID=22791597

Family Applications (1)

Application Number Title Priority Date Filing Date
US212574A Expired - Lifetime US1819904A (en) 1927-08-12 1927-08-12 Antenna regulator

Country Status (2)

Country Link
US (1) US1819904A (fr)
FR (1) FR660719A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474354A (en) * 1942-05-19 1949-06-28 Patelhold Patentverwertung Automatic frequency control circuits
US2498340A (en) * 1945-01-22 1950-02-21 Rca Corp Antenna tuning control system
US2884632A (en) * 1952-08-06 1959-04-28 Cgs Lab Inc Antenna tuning system
US7176840B1 (en) 2005-04-08 2007-02-13 Michael Peter Kelley Variable spacing inductance coil apparatus and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474354A (en) * 1942-05-19 1949-06-28 Patelhold Patentverwertung Automatic frequency control circuits
US2498340A (en) * 1945-01-22 1950-02-21 Rca Corp Antenna tuning control system
US2884632A (en) * 1952-08-06 1959-04-28 Cgs Lab Inc Antenna tuning system
US7176840B1 (en) 2005-04-08 2007-02-13 Michael Peter Kelley Variable spacing inductance coil apparatus and method

Also Published As

Publication number Publication date
FR660719A (fr) 1929-07-16

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