Open AccessBroadband power amplifier using hairpin bandpass filter matching network
Author(s) -
Haider Muhammad Furqan,
You Fei,
Shi Weimin,
Ahmad Shakeel,
Qi Tian
Publication year - 2020
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2019.3047
Subject(s) - chebyshev filter , band pass filter , electronic engineering , impedance matching , broadband , amplifier , high pass filter , electronic filter topology , voltage controlled filter , low pass filter , filter (signal processing) , electrical impedance , computer science , engineering , electrical engineering , telecommunications , cmos
This Letter presents a new combination of a broadband power amplifier (PA) and an output microstrip hairpin bandpass filter. The filter is designed based on the fifth‐order Chebyshev low‐pass prototype element values. Even–odd mode impedance analysis is used to calculate the filter parameters. Meanwhile, only the fundamental impedance matching is considered for this design. Therefore, a highly selective bandpass response is obtained to provide a spurious‐free fundamental impedance matching. For verification, a broadband PA‐filter component across 1.9–3.1 GHz (48%) is designed and fabricated. Measurements have shown a drain efficiency of 48–56.6% with 39.3–40.5 dBm of maximum output power.