Endfire-type phased array antenna

Details Endfire-type phased array antenna Endfire-type phased array antenna

1976-10-26

1978-10-24

Smith, Alfred E.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343816, 343853, H01Q 2112, H01Q 2100

Patent

active

041224477

ABSTRACT:
An endfire-type phased array antenna comprises n antenna elements (n.gtoreq.3). The difference of current flowing through the antenna elements is controlled to one which is pre-determined by adjusting each length of the feeders and by coupling the phase inverting circuits to alternate antenna elements. The current amplitude ratio thereof is also controlled to a pre-determined value by using a mixing or distributing circuit. Thus an antenna having a high directivity in front and no radiation in other directions is provided which can be effectively used for preventing multi-path interference in TV or FM.

REFERENCES:
patent: 1964189 (1934-06-01), Koomans
patent: 2409944 (1946-10-01), Loughren
patent: 2578973 (1951-12-01), Hills
patent: 3082422 (1963-03-01), Watkins
patent: 3750185 (1973-07-01), Evans
patent: 4010474 (1977-03-01), Provencher
Hansen; R. C., Microwave Scanning Antennas, vol. 3., Academic Press, N.Y., 1966, pp. 5-9.
Jordan; E. C., Electromagnetic Waves & Radiating Systems, 2nd ed., Prentice Hall, N. J. 1968, pp. 422-444.

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