A integrated high voltage controller for a reconfigurable antenna array

This paper presents a integrated high voltage controller, which is fabricated in a 0.35pm high voltage CMOS technology(AMS H35), and can be applied in high voltage applications up to 115V. The high voltage output is controlled by 8-bit digital input code. In order to improve the accuracy and decrease the required area, it is implemented by a low voltage DAC and a high voltage amplifier for boosting the controllable output voltage. Since the current consumption from the high voltage power supply is only 80/μA, it can be powered by a charge pump which generates 115V from a battery with 3.7V DC. Combining with a 8*8 external high voltage switches, the proposed high voltage controller can drive up to 64 individual channels of antenna array with a voltage from 0 to 115V. It will greatly reduce the complexity and cost of mobile applications required high voltage. The feasibility is proved by post-simulation result and experimental test result.