Patent ID: 7619461

Claim:
Switch circuit to obtain a duplicate dynamic range, which comprises a transistor ( 17 ) with three terminals ( 20 , 21 and 22 ), an inductor ( 12 ), two resistors ( 15 and 16 ) and two capacitors ( 11 and 18 ), located between a signal source (V SOURCE ) ( 10 ) and an external load (Z load ) ( 19 ) characterized in that it comprises: connecting the signal source (V source ) ( 10 ) to the first terminal ( 20 ) of the transistor by means of a capacitor ( 11 ); connecting an input of complementary control voltage (VControl ) ( 13 ) to the first terminal ( 20 ) of the transistor ( 17 ) by means of an inductor ( 12 ); connecting an input of control voltage (V control ) ( 14 ) to the second terminal ( 21 ) of the transistor ( 17 ) by means of a resistor ( 15 ); connecting an input of control voltage (V control ) ( 14 ) to the third terminal ( 22 ) of the transistor by means of another resistor ( 16 ); connecting the third terminal ( 22 ) of the transistor ( 17 ) to the load (Z load ) by means of a capacitor ( 18 ); and applying a control voltage (V control ) ( 14 ) and its complementary control voltage (VControl ) ( 13 ) to the switch circuit; in order to achieve a dynamic range in the switching double the range of the source voltage.