摘要

A power amplifier (PA) for multi-mode multi-standard transceiver which is implemented in a TSMC 0.18-mu m CMOS process is presented. The proposed PA improves bandwidth using matching compensation, lossy matching network and negative feedback technique. Measurement results show that the working frequency range of the wideband PA is 0.7 similar to 1.5GHz, with the maximum output power of 18.2 similar to 22.3dBm. The output P1dB during test is 16.6 similar to 21.4 dBm, and the corresponding power added efficiency (PAE) is 7.7%similar to 23.4%. The power gain within the working frequency is larger than 16dB and the S11 is less than -13dB. According to the test results, the proposed PA can cover the frequency of more than one octave. The linearity and power gain of the PA is satisfactory within the working frequency.