1.5W RF Amplifier circuit

The following diagram is complete design for 1.5W RF Amplifier class C powered using power transistor BFG193 and MRF313.

Schematic Diagram:

Parts List:

R1, R2, R3, R4 = 100
R5 = 10k
C1 = 220uF
C2, C3, C4, C5, C6, C7 = 100nF
C8, C9 = 1nF
C10, C11, C12 = 22pF
C13, C14, C15, C16 = 15pF
C17, C18 = 10pF C
19, C20 =(Variable capacitor 5-25pF)
L1, L2 = 10uH
L3 = 45nH 2 turns diam 5mm (wire = 0.8mm)
L4 = 27uH (Can be 10uH-100uH)
L5 = > 500nH 10-15 turns diam 6.5mm (wire = 0.8mm)
L6, L7 = 100nH 3 turns diam 6.5mm (wire = 0.8mm)
Q1 = BFG193
Q2 = MRF313, 2N3866, 2N4427

PCB Design:

Complete explanation about this RF amplifier circuit, go to this page