Mobile radio system/transmitter with a controllable power amplifier
AssigneeU.S. Philips Corporation
InventorsLudwig Dennerlein, Christian Wunsch
Life of this patent
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Abstract
Transmitter including a controllable power amplifier, whose output signal is fed back to a control input of the power amplifier via a detector device which produces a detector signal for detecting the output power of the power amplifier, and comprising a signal generator for producing a control signal which is used for forming the output signal and has rising and falling edges. A control signal is derived from the comparison of the detector signal with the reference value which control signal has a rising edge and thus also terminates the increase of the transmitted power. The transmitter is used in time-division multiplex systems, more specifically, in mobile and fixed stations in a mobile radio system according to the GSM standard.
Claims9
Mobile radio system comprising at least a transmitter which includes a controllable power amplifier whose output signal is fed back to a control input of the power amplifier via a detector device which produces a detector signal for detecting the output power of the power amplifier, and includes a signal generator for producing at an output of the signal generator a first control signal which is used for forming the power amplifier output signal, the first control signal having rising and falling edges, and further includes means for deriving a signal generator control signal, the signal generator control signal for terminating the rising edges of the first control signal and further being derived from a comparison of the detector signal with a reference value.
Transmitter including a controllable power amplifier whose output signal is fed back to a control input of the power amplifier via a detector device which produces a detector signal for detecting the output power of the power amplifier and including a signal generator for producing at an output of the signal generator a first control signal which is used for forming the power amplifier output signal, the first control signal having rising and falling edges, and further including means for deriving a signal generator control signal for terminating the rising edges of the first control signal, the signal generator control signal being derived from a comparison of the detector signal with a reference value.
Dependencies are inferred from the claim text.