Communications: radio wave antennas – Antennas – Wave guide type
Reexamination Certificate
2007-10-16
2007-10-16
Chen, Shih-Chao (Department: 2821)
Communications: radio wave antennas
Antennas
Wave guide type
C343S808000, C343S846000
Reexamination Certificate
active
10838549
ABSTRACT:
A compact broadband antenna. The antenna includes a first mechanism for receiving input electromagnetic energy. A second mechanism provides radiated electromagnetic energy upon receipt of the input electromagnetic energy. The radiated electromagnetic energy is provided via an antenna element having one or more angled surfaces. A third mechanism directs the radiated electromagnetic energy in a specific direction. In a more specific embodiment, the third mechanism includes a reflective backstop that is selectively positioned behind the second mechanism to reflect back-radiated energy forward of the second mechanism, thereby causing reflected electromagnetic energy to combine in phase with forward-radiated energy from the second mechanism. The third mechanism further includes plural layers of dielectric material. One or more of the plural layers of dielectric material partially surround an angled radiating surface of the second mechanism, which is implemented via a substantially conical transmit element in the specific embodiment.
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Eskelinen, Pekka, Improvements of an inverted trapazoidal pulse antenna, IEEE Antennas and Propagation Magazine, vol. 43, No. 3, Jun. 2001.
Robson Joseph A.
Salvail Gary M.
Wangsvick Chad M.
Alkov Esq. Leonard A.
Chen Shih-Chao
Grossman, Esq. Rene
Julian, Esq. H. St.
Raytheon Company
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