Dual mode log periodic monopole array

Details Dual mode log periodic monopole array Dual mode log periodic monopole array

1979-10-26

1981-10-20

Lieberman, Eli

Communications: radio wave antennas

Antennas

Logarithmically periodic

343846, H01Q 1110

Patent

active

042964164

ABSTRACT:
A dual mode log periodic monopole antenna for simultaneously receiving and transmitting radio frequency energy that includes a conducting cone (10) with four log periodic monopole elements (12 through 15) extending radially therefrom and operational in a first mode. Four additional log periodic elements (16 through 19) are interspersed between the elements (12 through 15) and are also connected to and extend radially from the conducting cone (10). The second four log periodic elements (16 through 19) are interconnected for operation in a second mode. Each of the eight log periodic monopole elements (12 through 19) consists of a single planar substrate (24) of a dielectric material having a conducting pattern (26) thereon. A coaxial cable (22) is connected to the monopole elements (12 through 15) and a coaxial cable (20) is connected to the monopole elements (16 through 19).

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