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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 ?? over a wide frequency range, so external isolators following PAs can be eliminated. The PA is implemented by using a 0.18 ??m CMOS process, and the supply voltage is 3.3 V. Over all of the frequency range, the PA realizes output return loss...
This paper proposes novel dual-band matching network, suitable for the design of integrated concurrent dual band power amplifier in a multi-standard radiofrequency frontend. The effectiveness of the proposed dual band matching network was demonstrated through the implementation of a power amplifier operating at 2.4 GHz and 3.5 GHz in IBM 0.13 mum CMOS technology. The designed 1.25 mm times 1.25 mm...
We have successfully developed a 500W AlGaN/GaN HEMT power amplifier with a frequency of 1.5GHz in L-Band, operating at 65V drain bias voltage. This amplifier consists of 4-chips of HEMT die developed for L-band frequency operation with push-pull configuration. The developed amplifier has an output power of 500W and a high linear gain of 17.8dB at the frequency of 1.5GHz under pulsed conditions at...
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