Modeling and Design of a Highly Efficient Switch-Mode RF/Microwave Power Amplifier Based-on Microstrip Bandpass Filter

Farzad Moloudi, Omid Eslamipour, Ali Khoshnoud

Abstract


This paper presents a broadband Switch-Mode Power Amplifier (SMPA) using a Band-Pass Filter (BPF) at the Output Matching Network (OMN). The proposed SMPA integrates a microstrip BPF as an output impedance matching network to significantly reduce the final circuit size. The microstrip lines of the filter simultaneously play the role of filtering and impedance matching. This proposed method reduces the size of the PA and reduces the power dissipation as much as possible. The BPF is placed at the output of the circuit using microstrip lines and the RT Duroid 6006 substrate. This BPF covers a wide bandwidth ranging from 3.0 GHz to 4.4 GHz. Simulation results show 9 – 14 dB gain with 44 – 56.6 % drain efficiency (DE %), and the output power of 39 – 41.3 dBm would be achieved across the frequency band from 3.0 GHz to 4.4 GHz.

Full Text:

PDF

References


A. Grebennikov, NO. Sokal, and MJ. Franco. “Switchmode RF and microwave power amplifiers,” 2nd ed., Academic Press; 2021.

A. Barakat, M. Thian, and V. Fusco, “A High-Efficiency GaN Doherty Power Amplifier with Blended Class-EF Mode and Load-Pull Technique”. IEEE Transactions on Circuits and Systems II: Express Briefs, 65:151–5, 2018. https://doi.org/10.1109/TCSII.2017.2677745.

C. Liu, and QF. Cheng, “Analysis and Design of High-Efficiency Parallel-Circuit Class-E/F Power Amplifier,” IEEE Transactions on Microwave Theory and Techniques, 67:2382–92, 2019. https://doi.org/10.1109/TMTT.2019.2902548.

H. Kobayashi, JM. Hinrichs, and PM. Asbeck, “Current-Mode Class-D Power Amplifiers for High-Efficiency RF Applications,” IEEE Transactions on Microwave Theory and Techniques, 49:2480–5, 2001. https://doi.org/10.1109/22.971639.

NO. Sokal, AD. Sokal, “Class E-a new class of high-efficiency tuned single-ended switching power amplifiers,” IEEE Journal of solid-state circuits; 10:168–76, 1975. https://doi.org/10.1109/JSSC.1975.1050582.

FH. Raab, “Class-F Power Amplifiers with Maximally Flat Waveforms”. IEEE Transactions on Microwave Theory and Techniques, 45:2007–12, 1997. https://doi.org/10.1109/22.644215.

CS. Cripps, “RF Power amplifiers for wireless communications,”. 2nd ed. Boston: MA, Artech House; 2006.

Z. Su, C. Yu, B. Tang, and Y. Liu, “Bandpass Filtering Power Amplifier with Extended Band and High Efficiency,” IEEE Microwave and Wireless Components Letters, 30:181–4, 2020. https://doi.org/10.1109/LMWC.2020.2966067.

Z. Zhuang, Y. Wu, Q. Yang, M. Kong, and W. Wang, “Broadband Power Amplifier Based on a Generalized Step-Impedance Quasi-Chebyshev Lowpass Matching Approach,” IEEE Transactions on Plasma Science; 48:311–8, 2020. https://doi.org/10.1109/TPS.2019.2954494.

F. Moloudi, H. Jahanirad, “Broadband class-E power amplifier design using tunable output matching network”. AEU-International Journal of Electronics and Communications, 118:153142, 2020.

F. Moloudi, O. Eslamipour, “Wide-band switching-mode power amplifier using varactor-based reconfigurable output matching network,” AEU-International Journal of Electronics and Communications, 132:153647, 2021.

D. Wisell, D. Rönnow, and P. Händel, “A technique to extend the bandwidth of an RF power amplifier test bed,” IEEE Transactions on Instrumentation and Measurement, 56:1488–94, 2007. https://doi.org/10.1109/TIM.2007.900101.

K. Chen, J. Lee, WJ. Chappell, and D. Peroulis, “Co-Design of highly efficient power amplifier and high-Q output bandpass filter”. IEEE Transactions on Microwave Theory and Techniques, 61:3940–50, 2013. https://doi.org/10.1109/TMTT.2013.2284485.

L. Gao, XY. Zhang, S. Member, S. Chen, and Q. Xue, “Compact power amplifier with bandpass response and high efficiency”. IEEE Microwave and Wireless Components Letters, 24:707–9, 2014. https://doi.org/10.1109/LMWC.2014.2340791.

J. Hong, and MJ. Lancaster, “Microstrip Filters for RF/Microwave”. vol. 7. 2001.


Refbacks

  • There are currently no refbacks.


International Journal of Electronics and Telecommunications
is a periodical of Electronics and Telecommunications Committee
of Polish Academy of Sciences

eISSN: 2300-1933