Communications: radio wave antennas – Antennas – High frequency type loops
Patent
1983-11-03
1985-10-15
Lieberman, Eli
Communications: radio wave antennas
Antennas
High frequency type loops
343744, H01Q 1114
Patent
active
045477760
ABSTRACT:
Loop radiating elements for microwave frequencies which result in balanced ower division at the feed points and equi-phase currents in the radiating segments are in the form of an Alford loop design having a "kink" in the stripline path on the side of a printed circuit board opposite the cross-over to restore equal path lengths on both sides of a central feed terminal. Alternatively, the radiating segments of a loop may be in the form of end-loaded bent dipoles which are dual-fed on diametrically opposite points of the loop with equi-phase and amplitude signal. The result is loop radiating elements which have an axial null with a symmetrical doughnut radiating pattern.
REFERENCES:
patent: 2368618 (1945-02-01), Sandretto et al.
patent: 2749544 (1956-06-01), Pike
patent: 3973263 (1973-04-01), Green
patent: 4170012 (1978-06-01), Kaloi
Bolt, Jr. Conway A.
Cassen John W.
Schrank Helmut E.
Beers R. F.
David H. A.
Lieberman Eli
The United States of America as represented by the Secretary of
Wimer Michael C.
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