| 摘要 |
PURPOSE:To provide even demodulation characteristics by compensating the error of an inductance value by inserting a resistance in series into an inductance provided for corrections of demodulation characteristics. CONSTITUTION:Inductance L loaded on final stage 1 of an intermediate-frequency amplifying circuit prevents the voltage decrease of the collector bias of the stage and also resonates with a capacitance component appearing across inductance L. As a result, a decrease in gain is prevented at the low-frequency side of demodulation characteristics. Resistance R is inserted into inductance L in series and its resistance value is set adequately, so that variance in differential gain will be suppressed. |
