Communications: radio wave antennas – Antennas – Slot type
Patent
1997-06-06
1999-12-28
Wong, Don
Communications: radio wave antennas
Antennas
Slot type
343771, 343786, H01Q 1310
Patent
active
060087706
ABSTRACT:
A tapered slot plane antenna apparatus for a millimeter wave radio communication system which provides a tapered pattern composed by utilizing a Fermi-Diac distribution function so as to consider an impedance matching and a directivity of the antenna apparatus. Supporting layers and protection layers may be utilized to provide sufficient strength for implementation in a compact millimeter wave radio communication system. The plane antenna may further prevent a directivity from deteriorating even if distances between end portions of an antenna aperture portion and ends of an antenna are decreased. A slot width of a slot line may be widened in tapering for radiating an electromagnetic wave in a progressive direction of the slot line by a conductor portion having a slot line and a corrugated structure portion at respective end portions located parallel to a radiating direction of the electromagnetic wave.
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Nguyen Hoang
Ricoh & Company, Ltd.
Wong Don
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