Miniaturisation of combline filters for switched-mode power amplifier systems

[摘要] This paper presents a coaxial combline filter for a class-S power amplifierfor an operating frequency of 450 MHz. According to the measurement results,the filter provides a bandwidth of 26 MHz, an insertion loss of 0.55 dB, anda second pass-band only at 2.8 GHz. As the filter dimensions are crucial forthe envisaged application, different ways to miniaturise the filter areproposed and their features and disadvantages discussed.

[学科分类] 电子、光学、磁材料