Video 5.1 - Conquer Radio Frequency

This video employs a BFP405 transistor model which was readily available in AWR v11. If you can't find this model in newer versions, please download this simulation file which includes the BFP405 model explorerf.com/BFP405_from_AWR_...
Content:
BJT Amplifier Design Part 1.
I-V characterisation of BJTs.
Calculating transistor’s beta from IV curves.
Passive biasing with feedback. Explanation of feedback mechanism and its usefulness to diminish the effects of temperature-induced current fluctuations.
Calculation of value of bias resistors, verification of bias through DC current and voltage annotations. Bias adjustments through tuning.
DC blocking capacitors to avoid test ports loading bias network.
Difference between real and ideal capacitors, high-frequency capacitor model and parasitics.
Introduction to RF chokes.
You may download the "Conquer Radio Frequency" e-book, which provides support material for these videos, at explorerf.ipage.com/conquer_ra...
Intro: (0:00)
Fetching BJT Model BFP405: (0:58)
Design specs and DC bias: (2:00)
IV Curve Tracer - Setup: (4:11)
IV Curves - Plotting: (8:51)
Determining Base current for required specs from IV Curves: (11:15)
Designing DC Bias Network: (13:00)
Verifying DC Bias network design: (20:18)
Insight into DC Bias Network operation using Tuner: (22:50)
Isolating input and output RF ports from bias network - DC Blocking capacitors: (24:57)
Practical DC Blocking Capacitors and Self-resonance: (31:50)
Isolating DC supply from RF signals - RF chokes (continues in video 5.2): (38:00)

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