Crossed-slot antenna for mobile satellite and terrestrial...

Details Crossed-slot antenna for mobile satellite and terrestrial... Crossed-slot antenna for mobile satellite and terrestrial...

2005-06-28

2005-06-28

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

Slot type

C343S767000

Reexamination Certificate

active

06911952

ABSTRACT:
A crossed-slot antenna is fabricated using rectangular sheet of metal. A crossed-slot is etched or stamped in the sheet of metal. A feed structure is similarly formed in the sheet of metal. Sidewalls are integrally formed with the sheet of metal and are bent to form a rectangular box. A circuit board is attached to the rectangular box. An air-filled cavity is defined by the sheet of metal, the sidewalls, and the circuit board. Alternatively, a crossed-slot antenna with a solid cavity is fabricated using a sheet of plastic. Ridges are formed in a cross pattern on the sheet of plastic. The sheet of plastic is plated with metal. The metal is removed from a surface of the sheet of plastic, exposing the ridges.

REFERENCES:
patent: 4916457 (1990-04-01), Foy et al.
patent: 5581266 (1996-12-01), Peng et al.
patent: 6593891 (2003-07-01), Zhang
patent: 6646618 (2003-11-01), Sievenpiper
Sievenpiper, U.S. Appl. No. 09/829,192 filed Apr. 10, 2001, “Low-Profile Slot Antenna for Vehicular Communications and Method of Making and Designing Same”.

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