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Amplifier Design



                                                                               Amplifier Design  183

















































                        Figure 3.89 Class A distributed linear amplifier with active bias and matching circuits.

                                                        R (V     0.7)
                                                             CC
                                                          1
                                                   I
                                                    C    R (R   R )
                                                          3   1    2
                        11. The collector-to-emitter voltage of the biased device will be
                                                    V     V     I R
                                                      CE    CC   C  3
                        12. C   1 ohm
                              B
                        JFET self-bias common-source Class A amplifier for VHF and below (Fig. 3.90)
                        1. Select a  V  and an appropriate  V  for Class A operation from the data
                                     dd                     gs
                           sheet for the JFET selected, and note the I for this chosen V .
                                                                   d                gs

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