Patent ID: 6639425
Filing Date: 2003-10-28
Classification: B41J,H01L

Abstract:
An electronic driver circuitry for an integrated RF switching diode, comprising:a first CMOS integrated circuit diode for RF switching; a second CMOS integrated circuit diode electrically connected to said first CMOS integrated circuit diode to compensate for process and temperature variations by supplying an equal yet opposite current for canceling out variations in said first CMOS integrated circuit diode; a first PMOS transistor and a first poly-resistor circuit electrically connected to and for switching ON/OFF said CMOS integrated circuit diode, said first PMOS transistor having an equal current as said CMOS integrated circuit diode; a second poly-resistor in electrically connected with said first poly-resistor for compensating variations in resistance; a plurality of cascaded PMOS transistors in circuit connection with said first PMOS transistor for compensating variations in gain and voltage threshold of said CMOS integrated circuit diode; and a plurality of cascaded NMOS transistors in circuit connection with said plurality of PMOS transistors for compensating for variations in supply voltage, wherein all compensation cancels out undesired variations keeping current across the CMOS integrated circuit diode constant.