Compact high-power reflective-cavity backed spiral antenna

Details Compact high-power reflective-cavity backed spiral antenna Compact high-power reflective-cavity backed spiral antenna

2005-02-08

2005-02-08

Wong, Don (Department: 2821)

Communications: radio wave antennas

Antennas

Spiral or helical type

C343S754000, C343S7000MS

Reexamination Certificate

active

06853351

ABSTRACT:
An antenna device includes a substrate, and a radiating element disposed on the substrate. The radiating element has two spiral arms unfurling in an Archimedean progression and terminating in a logarithmic progression. The substrate is formed from a dielectric material and includes multiple perforations for providing passage of coolant through the substrate. The radiating element is disposed on a front surface of the substrate, and an enclosure is formed on a rear surface of the substrate to provide a reflective cavity for reflecting radiation to the front surface of the substrate. The enclosure includes a hexagonal perimeter formed by a wall. The antenna device may be used as an element in a planar phased array.

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