Radio transmission apparatus

Details Radio transmission apparatus Radio transmission apparatus

2005-08-23

2005-08-23

Chin, Vivian (Department: 2682)

Telecommunications

Transmitter

Measuring, testing, or monitoring of transmitter

C455S103000, C455S104000

Reexamination Certificate

active

06934519

ABSTRACT:
A radio transmission apparatus for performing radio transmission by use of a plurality of carrier frequencies, including signal processing systems for respective channels. Each signal processing system includes a transmission signal generator that modulates transmission data with a predetermined carrier frequency signal to generate a transmission signal, an amplifier that amplifies the transmission signal, and a variable band-pass filter connected to the output of the amplifier. The outputs of the signal processing systems are combined with a radio transmission signal. At least the center frequency of a pass band of the variable band-pass filter can be changed, with the pass band determined based on the carrier frequency signal of the channel. The apparatus also includes a fault detector configured to detect a fault of each variable band-pass filter.

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patent: 6625427 (2003-09-01), Kayano et al.

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