Elliptical RF Low-pass Filter-Reflectometer
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Here's a schematic reference for building Elliptical (Cauer) RF Low-pass Filter for FM Amplifier 88-108 MHz. A ninth-order, elliptic, low-pass filter attenuates harmonics generated in the power amplifier. The capacitors for the filter are circuit board pads.The reflectometer uses printed circuit board traces for micro-strip transmission lines. Transmission line segments (with an impedance of about 82 ohms) on either side of a 50 ohm... [ more ]
