Broadband power amplifier using hairpin bandpass filter matching network. Issue 4 (1st February 2020)

• Record Type: Journal Article
• Authors: Haider, Muhammad Furqan; You, Fei; Shi, Weimin; Ahmad, Shakeel; Qi, Tian
• Is Part Of: Electronics letters. Volume 56:Issue 4(2020)
• Page Start: 182
• Page End: 184
• Publication Date: 2020-02-01
• Subjects: impedance matching -- microwave filters -- microstrip filters -- band‐pass filters -- Chebyshev filters -- low‐pass filters -- microwave power amplifiers; highly selective bandpass response -- spurious‐free fundamental impedance matching -- broadband PA‐filter component -- broadband power amplifier -- output microstrip hairpin bandpass filter -- fifth‐order Chebyshev low‐pass prototype element values -- even–odd mode impedance analysis -- filter parameters -- hairpin bandpass filter matching network -- frequency 1.9 GHz to 3.1 GHz -- efficiency 48 percent to 56.6 percent; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2019.3047
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : 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.