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US 7,003,323 B2Granted
Radio system, antenna arrangement and polarization modulator for generating a transmit signal with changing polarization
AssigneeLucent Technologies Inc.
InventorsGeorg Fischer, Frank Gerhard Ernst Obernosterer
Life of this patent
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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.
Claims3
A base station, comprising:
- at least one transmitter;
- at least one receiver;
- and being assigned
- at least one dual-polarized antenna, wherein the at least one dual-polarized antenna is assigned a polarization modulator for changing at predetermined points in time the polarization state of a transmit signal to be transmitted;
- the polarization modulator being connected to a clock generator which fixes the points in time for changing the polarization state;
- wherein the dual-polarized antenna and the polarization modulator form a module arranged separately from the base station;
- the clock generator being within the module and generating a clock signal from the fluctuations of an envelope of RF transmit power of a TDMA frame.
4 more elements
Dependencies are inferred from the claim text.