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AssigneeNTT Mobile Communications Network, Inc.
InventorsShoichi Narahashi, Ken Kumagai, Toshio Nojima, Yoshiaki Tarusawa
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The frequencies of input modulated signals fed via ports 11.sub.1 to 11.sub.n are converted by frequency converting parts 12.sub.1 to 12.sub.n to different bands, and the converted outputs are applied to power combining part 24 decides if 16 via variable attenuators 21.sub.1 to 21.sub.n, respectively, and provided therefrom as a multiplexed output a portion of which is branched. The envelope power level L is detected by level detecting part 23. Control with the detected level L exceeds a level L.sub.s that is k times the average power of the multiplexed signal k being about 4 to 5, and controls the attenuators 21.sub.1 to 21.sub.n to attenuate the average power of the modulated signal by k/n-fold or less for about 1/.DELTA.F.sub.0 (sec), where (.DELTA.F.sub.0 Hz! is the frequency bandwidth of the multiplexed signal.
A signal multiplexer wherein modulated signals of different frequency bands fed via n input channels are combined by power combining means to a multiplexed signal for output to an output port, n being an integer equal to or greater than 2, said signal multiplexer comprising:
A signal multiplexer wherein modulated signals of different frequency bands fed via n input channels are combined by power combining means to a multiplexed signal for output to an output port, n being an integer equal to or greater than 2, said signal multiplexer comprising:
A signal multiplexer wherein modulated signals of different frequency bands fed via n input channels are combined by power combining means to a multiplexed signal for output to an output port, n being an integer equal to or greater than 2 comprising:
A signal multiplexing method wherein modulated signals of different frequencies fed via n input channels are combined to a multiplexed signal for output, n being an integer equal to or greater than 2, said method comprising the steps of:
A signal multiplexing method wherein modulated signals of different frequencies fed via n input channels are combined to a multiplexed signal for output, n being an integer equal to or greater than 2, said method comprising the steps of:
A signal multiplexer wherein n m-ary FSK modulating means for shifting their output frequencies in accordance with the symbols of input signals thereto are supplied with a common reference frequency signal from reference frequency oscillating means as the reference for the frequency of the output signal from each of said m-ary FSK modulating means and said output signals are combined by power combining means for output, where m and n are integers each equal to or greater than 2, said signal multiplexer comprising:
Dependencies are inferred from the claim text.