RF NPN Silicon Transistor BFP460 supporting FM antenna LNA 50 Ω matching

Open online SPICE simulator circuit link: rf_BFP460_FM_Radio.tsc

FM antenna LNA matched to 50 Ω at the input, NPN Silicon RF Transistor BFP460

- Input matching (C1)
- DC blocking (C2)
- DC blocking (C3)
- RF decoupling (C4)
- Output matching (C5)
- DC blocking (C6)
- DC biasing for transistor base(R1)
- Biasing, output matching, and stability improvement (R2)
- DC bias and DC negative feedback (R3)
- Negative feedback (R4)
- Input matching (L1)
- Output matching (L2)

The BFP460 is a low noise device that is part of Infineon’s established fourth generation
RF bipolar transistor family. Its transition frequency fT of 22 GHz, low current and
high robustness characteristics make the device suitable for amplifiers. It remains cost
competitive without compromising on ease of use.

This transistor provides high gain (15.17 dB@100 MHz) using Infineon Designer

Target application:
- FM antenna LNA matched to 50 Ω at the input