Elliptical RF Low-pass Filter-Reflectometer
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 conductor provide sample voltages representative of the square root of forward and reverse power.
DC voltages, representative of forward and reflected power to the metering board, where they are processed for power control, metering, and for SWR metering and protection.
Read more: Free AADE Filter Design-Analysis
Free Email Newsletter
And then confirm your email subcription
No Comment to “Elliptical RF Low-pass Filter-Reflectometer”