IN3LBQ on the Hühnerspiel (Amthorspitze) - photo by IN3OTD

The S1FLM as PIN diode

S1FLM measurement setup

Small-signal loss vs bias

S-parameters measured at -20 dBm

Forward biased

Diode forward biased with currents from 1 mA to 100 mA.

S1FLM loss vs bias current

Reverse biased

Diode reverse biased with voltages from 0 V to 20 V.

S1FLM isolation vs bias voltage

Harmonics level vs power

At 1.8 MHz

Reference baseline shifted a bit too much here, need to redo...

S1FLM fundamental at 1.8 MHz S1FLM H2 at 1.8 MHz S1FLM H3 at 1.8 MHz S1FLM H4 at 1.8 MHz S1FLM H5 at 1.8 MHz

At 30 MHz

S1FLM fundamental at 30 MHz S1FLM H2 at 30 MHz S1FLM H3 at 30 MHz S1FLM H4 at 30 MHz S1FLM H5 at 30 MHz

Intermodulation distortion vs power

At 1.8 MHz

S1FLM IM3 at 1.8 MHz S1FLM IM5 at 1.8 MHz S1FLM IM7 at 1.8 MHz

At 30 MHz

S1FLM IM3 at 30 MHz S1FLM IM5 at 30 MHz S1FLM IM7 at 30 MHz