Design of Class-F Power Amplifier with Feedback and Compact Microstrip Resonant Cell

Design of a class F power amplifier (PA) with microstrip feedback and compact microstrip resonant cell (CMRC) by using of the pHEMT ATF- 34143 transistor is presented. To have suppress the third harmonic (7.2 GHz) aCMRC with miniaturized size and -50 dB suppression level is designed. On the other hand, a feedback with microstrip lines is used to increasing stabilityfactor without changing the efficiency. Aim of this feedback is increasing stability factor (K) and to create unconditional stability of circuit. The drainvoltage and fundamental frequency of the proposed PA is 1.5 V and 2.4GHz, respectively. The power added efficiency of the proposed class-F PA is equal to 61% with 10.2 dB of power gain under 10dBm input power

Keywords:

Class-F Power Amplifier , Harmonic Control Circuit , Microstrip