D. Imanishi, JeeYoung Hong, K. Okada, A. Matsuzawa
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A 2-6 GHz fully integrated tunable CMOS power amplifier for multi-standard transmitters
A tunable power amplifier (PA) from 2.1 GHz to 6.0 GHz is presented for multi-standard radios. The proposed multi-band PA can tune the output impedance to 50 Ω over a wide frequency range, so external isolators following PAs can be eliminated. The PA is implemented by using a 0.18 µm CMOS process, and the supply voltage is 3.3 V. Over all of the frequency range, the PA realizes output return loss S22 of smaller than −8 dB, power gain of larger than 12 dB, output 1-dB compression point of larger than 15 dBm.
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