Miniaturisation of combline filters for switched-mode power amplifier systems

Serebryakova, Elena GND; Blau, Kurt GND; Hein, Matthias GND

This paper presents a coaxial combline filter for a class-S power amplifier for 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, and a second pass-band only at 2.8 GHz. As the filter dimensions are crucial for the envisaged application, different ways to miniaturise the filter are proposed and their features and disadvantages discussed.

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Serebryakova, E., Blau Dr.-Ing., K., Hein Univ.-Prof. Dr. rer. nat. habil., M., 2008. Miniaturisation of combline filters for switched-mode power amplifier systems. Advances in radio science: Kleinheubacher Berichte, Advances in radio science: Kleinheubacher Berichte 8, 2006, 125–127.
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