An object of the present invention is to provide a transmitter-receiver RF-IC having a built-in regulator, which can reduce a minimum value of an input voltage of the regulator without increasing its area, the input voltage being supplied from a battery, the transmitter-receiver RF-IC being capable of...http://www.google.de/patents/US7725124?utm_source=gb-gplus-sharePatent US7725124 - Semiconductor device and module having a transceiver with a built-in regulator
