Communications: radio wave antennas – Antennas – Logarithmically periodic
Patent
1979-10-15
1981-03-17
Lieberman, Eli
Communications: radio wave antennas
Antennas
Logarithmically periodic
H01Q 1110
Patent
active
042570492
ABSTRACT:
A log-periodically loaded monopole antenna comprises a plurality of longitudinally log-periodically spaced longitudinally tapering linear radiating elements in a vertical plane, a meander transmission line (meanderline) in a second plane perpendicular to the vertical plane and extending longitudinally on opposite sides of the plane of the elements and intersecting successive elements at the cross-over points, and a straight transmission line or shunt in the second plane interconnecting the junctions of the elements and the meanderline. The addition of this shunt substantially eliminates the large gain drop-out characteristic of this antenna, the voltage standing wave ratio being reduced from an average of 6:1 to less than 1.6:1. In one embodiment the elements are pivotally connected to the transmission line for pivoting in the vertical plane to permit collapsing of the elements toward the plane of the transmission line when required due to space limitations.
REFERENCES:
patent: 3212094 (1965-10-01), Berry
patent: 3271775 (1966-09-01), Yang
patent: 3594807 (1971-07-01), Tanner
patent: 3696438 (1972-10-01), Ingerson
patent: 3808599 (1974-04-01), Brunner
patent: 4152706 (1979-05-01), Barbano et al.
GTE Products Corporation
Lawler John F.
Lieberman Eli
LandOfFree
Periodically loaded antenna structure does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Periodically loaded antenna structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Periodically loaded antenna structure will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1648271