Range limited antenna

Details Range limited antenna Range limited antenna

2007-11-06

2007-11-06

Dinh, Trinh Vo (Department: 2821)

Communications: radio wave antennas

Antennas

Plural antennas spaced a fractional or full wave length apart

C343S893000, C343S853000, C343S820000, C455S462000, C455S561000

Reexamination Certificate

active

11268412

ABSTRACT:
Range limited antenna includes first and second pair of antenna elements, and an RF signal processing network connected to both pair of antenna elements. The network has a function, F(Ξ,x)≈ΦA(x)−ΦB(x), where x is a signal, ΦA(x) is the phase angle of signal x at the first element pair, ΦB(x) is the phase angle of signal x at the second element pair, and Ξ contains all additional parameters which bear on the system. The network is configured to pass a signal for which F(Ξ,x)>ε, where ε is a threshold amount, such that the antenna has gain to signals within a radius and has attenuation outside the radius.

REFERENCES:
patent: 3907269 (1975-09-01), Baker, Jr.
patent: 4353073 (1982-10-01), Brunner et al.
patent: 4903333 (1990-02-01), Aizawa
patent: 6218987 (2001-04-01), Derneryd et al.
patent: 6664921 (2003-12-01), Pratt
patent: 6680709 (2004-01-01), Kitagawa
patent: 6985123 (2006-01-01), Gottl
patent: 2002/0008672 (2002-01-01), Gothard et al.
patent: 2002/0118138 (2002-08-01), Lindenmeier et al.
patent: 2002/0132641 (2002-09-01), Erhage et al.
patent: 2004/0259597 (2004-12-01), Gothard et al.
patent: 2005/0110691 (2005-05-01), Anderson
patent: 2005/0190115 (2005-09-01), Chiang et al.
patent: 2005/0200551 (2005-09-01), Ghavami

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