Communications: radio wave antennas – Antennas – Antenna components
Reexamination Certificate
2005-06-28
2005-06-28
Nguyen, Hoang V. (Department: 2821)
Communications: radio wave antennas
Antennas
Antenna components
C343S909000, C343S771000
Reexamination Certificate
active
06911956
ABSTRACT:
Dielectric lenses (6) with an outer dimension of about 0.5 to 1.5 times a wavelength are arranged on front faces of respective slots (3) of a waveguide slot array antenna (1). The dielectric lenses (6) are formed in a panel structure where they have been connected integrally through a dielectric panel (7) so that they cover a front face of the antenna. Spherical waves radiated from the slots are converted into a flat wave by the dielectric lenses, and a composite wave of radiation waves from the respective slots becomes a flat wave which hardly includes ripples, so that an antenna gain is remarkably improved as compared with a case that dielectric lenses are not provided.
REFERENCES:
patent: 5173714 (1992-12-01), Arimura et al.
patent: 5929819 (1999-07-01), Grinberg
Fattibene Arthur T.
Fattibene Paul A.
Fattibene & Fattibene
Mitsumi Electric Co. Ltd.
Nguyen Hoang V.
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