Semiconductor devices for communications - diodes 1/2

1. First radio receivers cca 1920.
2. Bandgap, dielectric strength and carrier mobilities of different semiconductors.
3. Diode equation, thermal voltage ans diode ideality factor.
4. Replacing Is with U1mA (barrier voltage).
5. Diode curves for reverse and forward bias.
6. Thermal coefficients of voltage drops.
7. Diode symbols and package markings.
8. Linear, abrupt and hyperabrupt doping profiles of varactors diodes.
9. Semiconductor type and polarity choices for varactors.
10. Hyperabrupt-varactor depletion region at different reverse bias.
11. Varactor tuning of resonant circuits.
12. Differential diode admittance and impedance, charge-storage efffects.