Wireless communications system, wireless transmitter, and...

Details Wireless communications system, wireless transmitter, and... Wireless communications system, wireless transmitter, and...

2007-07-31

2007-07-31

Urban, Edward F. (Department: 2618)

Telecommunications

Transmitter

Diversity

C455S103000, C455S132000, C455S209000, C375S299000, C375S347000

Reexamination Certificate

active

10271785

ABSTRACT:
This invention includes a wireless transmitter comprising an IF-signal generator that modulates input signals into those of an intermediate frequency band, signal distributors that distribute signals from the IF-signal generator, and a plurality of signal-transmission units that convert the signals distributed by the signal distributors into those of a radio frequency band, and then transmit the converted radio signals. The invention also includes a wireless receiver that receives the radio-frequency-band modulated signals and restores the signals of the intermediate frequency band. In this way, effective diversity is realized and signal interruptions are prevented. In addition, a handy, low-cost wireless communications system is provided.

REFERENCES:
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patent: 4761821 (1988-08-01), Mawhinney et al.
patent: 5369800 (1994-11-01), Takagi et al.
patent: 5513222 (1996-04-01), Iwasaki
patent: 5912927 (1999-06-01), Smith et al.
patent: 6542722 (2003-04-01), Sorrells et al.
patent: 6714800 (2004-03-01), Johnson et al.
patent: 2001-053640 (2001-02-01), None
patent: 2001-177452 (2001-06-01), None

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