Electronic circuit readily capable of controlling extent of a radio communication zone.

摘要

For use in a time division multiple access system and comprising a signal processing circuit (14, 15) which is for processing a local signal into a data burst under control by a burst control pulse having a control pulse width (T1), an electronic circuit comprises a control part (12) responsive to a sequence of data signals to produce a data pulse comprising a particular signal (PS) previous to a data time slot (TS) having a time slot width equal to the control pulse width. In addition, the control part produces an additional control pulse in accordance with the data signal sequence. In accordance with the burst control and the additional control pulses, a signal generator (13) processes the data pulse into a processed signal to supply the processed signal as the local signal to the signal processing circuit. Preferably, the additional control pulse has a width (T2) which is equal to that of data pulse. <IMAGE> <IMAGE>