H - Electricity – 04 – B
Patent
H - Electricity
04
B
325/70
H04B 1/04 (2006.01) H03G 3/20 (2006.01) H03G 3/34 (2006.01) H04N 5/38 (2006.01)
Patent
CA 1238367
-21- ABSTRACT OF THE DISCLOSURE The device for limiting the transmission power of radiowave transmitters comprises a limiting stage for attenuating the signal to be amplified before applying it to the input of the amplifying chain. A coupler collects part of the signal in order to apply it to the input of control means. A delay device is coupled between the coupler and the limiting stage and delays the signal to be amplified before applying it to the input of the limiting stage. The control means block the limiting stage in order to prevent transmission of the signal to be amplified to the input of the amplifying chain when the level of the signal to be amplified overshoots a predetermined amplitude and hold the limiting stage in the blocked state after the level of the signal to be amplified has fallen back below the predetermined threshold during a sufficient period of time which is calculated so as to prevent any power overshoot.
484069
Allanic Michel
Cluniat Claude
Goudreau Gage Dubuc
Thomson-Lgt Laboratoire General Des Telecommunications
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