Communications: directive radio wave systems and devices (e.g. – Directive – Including directive communication system
Reexamination Certificate
2005-11-08
2005-11-08
Issing, Gregory C. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including directive communication system
C333S08100R, C333S230000, C455S041100
Reexamination Certificate
active
06963305
ABSTRACT:
This invention makes it possible to communicate through solid non-metallic walls or ceilings with low microwave power levels. RF beam forming couplers are driven by common networks.For connection to a LAN segment at the other side of a wall or ceiling, transceiver4transmits data modulated microwave RF to coupler6through a directional step attenuator10.The reduced signal is received by the coupler system at the other side with a power level low enough to eliminate wireless detection from the outside. However, the directional step attenuator on the receive side reduces the signal power only by an insignificant amount due to its low directional losses during receive signal flow. Each coupler's geometry is minimizing the radiation exposed material volume by RF field concentration, therefore, enabling transmission through thick concrete walls at microwave frequencies without compromising privacy. When used as wireless access point, coupler transmits through a floor to wireless devices below. The preferred embodiment operates in the 5-GHz ISM band.
REFERENCES:
patent: 4654880 (1987-03-01), Sontag
patent: 5241410 (1993-08-01), Streck et al.
patent: 5347239 (1994-09-01), Loehner et al.
patent: 5557290 (1996-09-01), Watanabe
patent: 5625883 (1997-04-01), Leyten et al.
patent: 5878331 (1999-03-01), Yamamoto et al.
patent: 5977841 (1999-11-01), Lee et al.
patent: 6822946 (2004-11-01), Wallace
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