Radio system, antenna arrangement and polarization modulator...

Details Radio system, antenna arrangement and polarization modulator... Radio system, antenna arrangement and polarization modulator...

2006-02-21

2006-02-21

Tsang, Fan (Department: 2645)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S575700

Reexamination Certificate

active

07003323

ABSTRACT:
Improved frequency utilization in a radio network is achieved by using a radio system with a plurality of base stations, which respectively have at least one transmitter and one receiver, each base station being assigned at least one dual-polarized antenna. More efficient utilization of the available frequency band, and consequently a reduction in the cluster size, is made possible by the dual-polarized antenna being assigned a polarization modulator for changing at predetermined points in time the polarization state of a transmit signal to be transmitted.

REFERENCES:
patent: 5265105 (1993-11-01), Iwane
patent: 5280631 (1994-01-01), Nakahi
patent: 5592177 (1997-01-01), Barrett
patent: 5943372 (1999-08-01), Gans
patent: 6067053 (2000-05-01), Runyon et al.
patent: 6889061 (2005-05-01), Shapira et al.
patent: 0 479 744 (1991-05-01), None
patent: WO 97/49199 (1997-12-01), None

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