Communications: radio wave antennas – Antennas – Wave guide type
Reexamination Certificate
2008-05-30
2011-11-01
Duong, Dieu H (Department: 2821)
Communications: radio wave antennas
Antennas
Wave guide type
C343S772000
Reexamination Certificate
active
08049674
ABSTRACT:
A wide band antenna tracking modulator and method is disclosed. The system includes a common port for receiving an electromagnetic signal, a waveguide connected to the common port, at least a pair of side arms and a pair of coupling slots separated along an axis of the waveguide coupling the electromagnetic signals between the waveguide and the pair of side arms. The pair of coupling slots substantially coupled a higher order TE mode signal while substantially not coupling a primary TE mode signal. The method includes substantially coupling a higher order Transverse Electric (TE) mode signal of the electromagnetic signal while substantially not coupling a primary TE mode signal of the electromagnetic signal to at least a pair of side arms coupled to the wave guide though a pair of coupling slots separated along the axis of the waveguide.
REFERENCES:
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patent: 5617108 (1997-04-01), Silinsky et al.
patent: 2137428 (1984-10-01), None
Hawkins et al.; “Tracking systems for Satellite Communications”; IEEE Proceedings; vol. 135, PL. F. No. 5; Oct. 1988.
Choung, et al.; “Theory and Design of a Ku-Band TE21-Mode Coupler”; IEEE Transactions on Microwave Theory and Techniques; vol. 82, Issue 11; Nov. 1982 pp. 1862-1866.
Tatomir Paul J.
Tzelepis Christ P.
Duong Dieu H
The Boeing Company
Yee & Associates P.C.
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