Device for limiting the power transmission of radiowave transmit

Details Device for limiting the power transmission of radiowave transmit Device for limiting the power transmission of radiowave transmit

1985-06-17

1987-04-21

Gensler, Paul

Wave transmission lines and networks

Automatically controlled systems

Impedance matching

330136, H03H 724, H04B 118

Patent

active

046600035

ABSTRACT:
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 amplifed 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.

REFERENCES:
patent: 2952816 (1960-09-01), Miller
patent: 4398061 (1983-08-01), McMann, Jr.
patent: 4434440 (1984-02-01), Schiff
patent: 4574248 (1986-03-01), Snodgrass
The Radio and Electronic Engineer, vol. 43, No. 5, May 1973, pp. 341-347; Londres, GB; W. Gosling: "Impulsive Noise Reduction in Radio Receivers".
Microwave Journal, vol. 18, No. 7, Jul. 1975, pp. 35-37, 44, Dedham, US; G. Berretta et al.: "Predicting Amplifier Performance for Multicarriers".

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