Dual polarized spiral antenna

Details Dual polarized spiral antenna Dual polarized spiral antenna

1989-09-08

1992-09-08

Wimer, Michael C.

Communications: radio wave antennas

Antennas

Spiral or helical type

343859, H01Q 136, H01Q 927, H01Q 2100

Patent

active

051462346

ABSTRACT:
A broadband dual polarized antenna includes pairs of electrically separated stacked spiral antenna arms. Each pair of spiral arms have opposite senses and are orthogonal to each other. The relative overlap of each pair of spirals is kept to a minimum so that radiation received and transmitted by the bottom pair of spiral arms will be degraded as little as possible. No overlap exists within each pair of spiral arms, and the pair need not be co-planar, but do share a common axis with the other pair of spiral arms. The spiral arms can be segmented or may comprise a number of spiralling wire elements. A plurality of such antenna structures can be formed into an array capable of beam shaping or scanning.

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Chu, et al., "The Sinuous Antenna", Jun. 1988, pp. 40-48, MSN & CT.

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