GB1222520A - Improvements in directionally selective energy receiving systems - Google Patents

Improvements in directionally selective energy receiving systems

Info

Publication number
GB1222520A
GB1222520A GB4107070A GB4107070A GB1222520A GB 1222520 A GB1222520 A GB 1222520A GB 4107070 A GB4107070 A GB 4107070A GB 4107070 A GB4107070 A GB 4107070A GB 1222520 A GB1222520 A GB 1222520A
Authority
GB
United Kingdom
Prior art keywords
signal
potentiometer
input
directional pattern
summer
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
Application number
GB4107070A
Inventor
Charles Edwin Odams
Morton Fouche Spears
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.)
LTV ELECTROSYSTEM Inc
Original Assignee
LTV ELECTROSYSTEM Inc
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 LTV ELECTROSYSTEM Inc filed Critical LTV ELECTROSYSTEM Inc
Priority to GB4107070A priority Critical patent/GB1222520A/en
Priority claimed from GB626168A external-priority patent/GB1222518A/en
Publication of GB1222520A publication Critical patent/GB1222520A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01Q3/26—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 relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/2605—Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
    • H01Q3/2611—Means for null steering; Adaptive interference nulling
    • H01Q3/2629—Combination of a main antenna unit with an auxiliary antenna unit
    • 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
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

1,222,520. Aerials. L.T.V. ELECTROSYSTEMS Inc. 8 Feb., 1968, No. 41070/70. Divided out of 1,222,518. Heading H4A. The present Specification is similar to the parent Specification, but the claims deal with an interference rejecting device for use when deriving an equivalent narrow beam signal from two signals corresponding to broad beam reception patterns. As described, a signal corresponding to a figure eight directional pattern is applied to one end of a midpoint grounded potentiometer 72, and to the input of an inverter 50. Output from the said inverter is applied to the other end of the potentiometer. A second signal corresponding to a cardioid directional pattern is applied to one input of a summer 71, the other input of which is connected to the slider of the potentiometer 72. This enables inphase or anti-phase amounts of the firstmentioned signal to be combined with the second-mentioned signal and it is stated that the output signal from the summer 71 corresponds to a rotated cardioid directional pattern. The first-mentioned signal may be applied to the input of a paraphase amplifier, whose outputs are applied through cathode-follower amplifiers to the ends of the potentiometer (Fig. 12, not shown).
GB4107070A 1968-02-08 1968-02-08 Improvements in directionally selective energy receiving systems Expired GB1222520A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4107070A GB1222520A (en) 1968-02-08 1968-02-08 Improvements in directionally selective energy receiving systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4107070A GB1222520A (en) 1968-02-08 1968-02-08 Improvements in directionally selective energy receiving systems
GB626168A GB1222518A (en) 1968-02-08 1968-02-08 Improvements in directionally selective energy receiving systems

Publications (1)

Publication Number Publication Date
GB1222520A true GB1222520A (en) 1971-02-17

Family

ID=26240562

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4107070A Expired GB1222520A (en) 1968-02-08 1968-02-08 Improvements in directionally selective energy receiving systems

Country Status (1)

Country Link
GB (1) GB1222520A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2641420A1 (en) * 1988-12-30 1990-07-06 Thomson Csf DIRECT SELF ADAPTIVE FILTERING DEVICE AND POLARIZATION OF RADIO WAVES RECEIVED ON A NETWORK OF ANTENNAS FITTED TO A RECEIVER

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2641420A1 (en) * 1988-12-30 1990-07-06 Thomson Csf DIRECT SELF ADAPTIVE FILTERING DEVICE AND POLARIZATION OF RADIO WAVES RECEIVED ON A NETWORK OF ANTENNAS FITTED TO A RECEIVER
WO1990007802A1 (en) * 1988-12-30 1990-07-12 Thomson-Csf Self-adaptive directional filtering and polarisation device for radioelectric waves
US5124711A (en) * 1988-12-30 1992-06-23 Thomson-Csf Device for auto-adaptive direction and polarization filtering of radio waves received on a network of aerials coupled to a receiver

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