HF amplifier design with suppression of intermodulation interference for electrical industry and communications equipment

摘要

The input distributing unit (8) splits the power flow into two branches (11', 11"), each having a HF amplifier (V1, V2) and the resulting amplified HF signals are combined in an output adding unit (9). There is a transformer (T1, T2) in each branch, each providing a phase shift of 180 degrees in order to remove second order and higher interference. The output signals possess the same phase as the input signals.