A 6-10 GHz CMOS Tunable Power Amplifier for Reconfigurable RF Transceivers

1. Introduction Recently, a multi-standard transceiver has started to attract more attention with the overwhelming increase of various wireless standards that covers different frequency bands and uses diverse modulation standards. Moreover, the realization of a single chip that covers all the standards is desired for low-cost and downsizing. For this reason, a power amplifier that can tune the output impedance using a CMOS process is one of the important issues to realize a multi-standard transceiver. Until now, most of the standards for personal and domestic use such as the cellular network, Wi-Fi, WiMAX and others are concentrated mainly under 6GHz. However, if we think about the growth of millimeter wave applications in the future, it is expected that a multi-standard transceiver at high frequency is necessary. Therefore I designed and measured a multi-band power amplifier for the application in the frequency band from 6 to 10 GHz.