US1821367A - Beam wobbler - Google Patents

Beam wobbler Download PDF

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Publication number
US1821367A
US1821367A US69817A US6981725A US1821367A US 1821367 A US1821367 A US 1821367A US 69817 A US69817 A US 69817A US 6981725 A US6981725 A US 6981725A US 1821367 A US1821367 A US 1821367A
Authority
US
United States
Prior art keywords
antenna
reflecting
waves
speed
wires
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
US69817A
Other languages
English (en)
Inventor
George L Usselman
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.)
RCA Corp
Original Assignee
RCA Corp
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
Priority to DER69273D priority Critical patent/DE455240C/de
Priority to NL22065D priority patent/NL22065C/xx
Application filed by RCA Corp filed Critical RCA Corp
Priority to US69817A priority patent/US1821367A/en
Priority to GB29055/26A priority patent/GB261758A/en
Application granted granted Critical
Publication of US1821367A publication Critical patent/US1821367A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/44—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element

Definitions

  • This invention relates to ,a beam Wobbler for the sendingof signals by radiant energy for wireless communication. Its purpose is to over-come the .efiect of the common and widespread experience of fading signals in radio communication.
  • the waves start out from the antenna h y may be h cfl ed or f ct d d ring their transmission from the sending sta- 7 tion to the receiving station. It the beam of radiated waves is wobbled, that is, if the angle of the beam is moved bacl; and forth 1 p and. low apid y, it w nabl h vavingstation to pick up the signal at many Poin s Wh r cep n is imposs l r narily.
  • Fig. 1 shows a side view of my device
  • Fig. 2 shows a wiring arrangement more in detail.
  • Th an na 1 i n ha wav length long and is what is ordinarily known as the doublet antenna, having two aerial extensions in opposite directions, either vertically or hor zonta y d enn tcd t a r n m ter 1 1.
  • 2 and 3 are a plurality of reflector ir para l t t v.cl u l an nn an 01.18 qu r e w ve l ngth w y-f om t
  • Th principle of the ratio reflector has been known and is .old in the radioart. I
  • each of these condensers is such that intermittently, according to the speed of the motor during each half revolution, they will bring one of .t-he reflectors into resonance for the working frequency used in the transmitting apparatus 11 That is, the. function of the condensers is to cyclically vary the tuning of the reflectors alternately so that first one wire is efiective to refleet the waves and then the other. This will wobble the reflected waves or beams from one direction to the other. The speed at which the beam can be wobbled obviously will de pend upon the speed of the rotating condensers. r
  • antenna I mean any complete antenna, aerial, or other radiation means or system, composed of any number of conductors arranged in any desired manner, which system is energized from a single transmitter.
  • the method of preventing fading of signals transmitted from an antenna which includes radiating the signal oscillations from the antenna and intermittently alternately reflecting the radiated oscillations in a plurality of different directions.
  • an antenna for reflecting the radiation therefrom in any of a plurality of directions, and means for rendering the reflection means effective for reflection successively and cyclically in each of said directions at a rapid rate.
  • an antenna for radiating energy of desired frequency, a plurality of syntonizable reflecting wires associated therewith having a plurality of variable tuning means connected thereto, and means for cyclically varying said tuning means to make some of said plurality of reflecting wires resonant to the desired frequency at relatively different times than other of said reflecting wires.
  • an antenna for radiating energy of working frequency a plurality of syntonizable reflecting wires associated therewith having a plurality of variable tuning means connected thereto, and means for varying said tuning means at the same speed but in dephased relation to bring said reflecting wires into resonance cyclically at relatively diflerent times comprising a rotatable member to which said tuning means and a driving means are mechanically coupled.
  • an antenna for radiating energy of working frequency a plurality of syntonizable reflecting wires associated therewith having a plurality of rotary tuning condensers, each comprising fixed and movable plates, connected thereto, and means for rotating said condensers at the same speed but in dephased relation to bring said reflecting wires into resonance cyclically at relatively different times comprising a rotatable shaft upon which the movable plates of the rotary condenser are mounted in disaligned relation, and means to rotate said shaft at a desired speed.
  • an antenna a plurality of reflection.
  • an antenna for radiating energy of working frequency, a plurality of syntonizable reflecting wires associated therewith having a plurality of variable tuning means connected thereto, means for varying said tuning means at the same speed but in dephased relation to bring said reflecting wires into resonance for the Working frequency cyclically at relatively different times including a rotatable member to which said tuning means are mechanically coupled, and driving means to drive said rotatable member at not less than an audible rate.
  • the method of propagating high frequency energy which includes emitting the energy directively both in azimuth and in elevation, directing the energy towards the receiver, in azimuth, and wobbling the directivity in elevation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Aerials With Secondary Devices (AREA)
US69817A 1925-11-18 1925-11-18 Beam wobbler Expired - Lifetime US1821367A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DER69273D DE455240C (de) 1925-11-18 Einrichtung zur Beseitigung des Fading-Effekts
NL22065D NL22065C (en(2012)) 1925-11-18
US69817A US1821367A (en) 1925-11-18 1925-11-18 Beam wobbler
GB29055/26A GB261758A (en) 1925-11-18 1926-11-17 Improvements in or relating to wireless telegraphy and telephony

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69817A US1821367A (en) 1925-11-18 1925-11-18 Beam wobbler

Publications (1)

Publication Number Publication Date
US1821367A true US1821367A (en) 1931-09-01

Family

ID=22091396

Family Applications (1)

Application Number Title Priority Date Filing Date
US69817A Expired - Lifetime US1821367A (en) 1925-11-18 1925-11-18 Beam wobbler

Country Status (3)

Country Link
US (1) US1821367A (en(2012))
GB (1) GB261758A (en(2012))
NL (1) NL22065C (en(2012))

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415932A (en) * 1943-04-21 1947-02-18 Rca Corp Antenna system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415932A (en) * 1943-04-21 1947-02-18 Rca Corp Antenna system

Also Published As

Publication number Publication date
GB261758A (en) 1927-02-17
NL22065C (en(2012))

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