Communications: radio wave antennas – Antennas – Antenna components
Reexamination Certificate
2007-06-26
2007-06-26
Phan, Tho (Department: 2821)
Communications: radio wave antennas
Antennas
Antenna components
C343S756000, C343S7810CA
Reexamination Certificate
active
11240497
ABSTRACT:
An electromagnetic bandgap device is mountable on a RF disturbing structure of an antenna to minimize signal field disturbance imparted thereby. The RF disturbing structure is oriented in a direction substantially parallel to a path of travel of an antenna signal and located within a field covered by the signal transmitted by a feed. The bandgap device comprises a plurality of RF perturbing elements connected to the RF disturbing structure and spaced apart from one another in the direction substantially parallel to the signal path. The perturbing elements are positioned, configured and sized to direct a disturbed portion of the signal away therefrom to reduce field disturbance generated by the disturbed signal portion interacting with an undisturbed portion of the antenna signal.
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patent: 5541614 (1996-07-01), Lam et al.
patent: 6552696 (2003-04-01), Sievenpiper et al.
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Amyotte Eric
Brand Yan
Dupessey Virgine
Sierra-Garcia Santiago
Equinox Protection Inc.
Franz Bousnag, Patent Agent
MacDonald, Dettwiler and Associates Corporation
Phan Tho
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