Antenna operable across multiple frequencies while...

Details Antenna operable across multiple frequencies while... Antenna operable across multiple frequencies while...

2007-05-08

2011-11-22

Le, Hoanganh (Department: 2821)

Communications: radio wave antennas

Antennas

With spaced or external radio wave refractor

C343S795000

Reexamination Certificate

active

08063840

ABSTRACT:
An antenna including a number of antenna units, each having a lens and an array of beam ports. The antenna units are arranged in a stack, and are configured to transmit or receive signals from the same field-of-view. Each unit is configured to operate in a different frequency band, with the lenses being configured such that an approximately constant beam shape is maintained across the entire operating bandwidth of the antenna.

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patent: 5708679 (1998-01-01), Fernandes et al.
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patent: 2003/0146872 (2003-08-01), Kellerman et al.
patent: 44 30 832 (1995-11-01), None
patent: WO 94/26001 (1994-11-01), None
Gunderson, L.C., “An Electromagnetic Analysis of a Cylindrical Homogeneous Lens,” IEEE Transactions of Antennas and Propagation, Jul. 1972, pp. 476-479.

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