SQUARE_LAW_OUTPUT

Published:2009/7/15 3:12:00 Author:Jessie | From:SeekIC

Diode network and detector provide output proportional to square of input voltage. Input range of 40 db is split into two 20-db segments. Each stage saturates and gives constant output for voltages above operating range. For voltages below operating range, stage is cut off and has zero output. Combination of two stages gives desired square-law characterisitic. Resistor values are: R1A, R3A a=3.18K,R1B＝57.9K, R3B＝18.75K, R5 ＝3K、R7＝10, R2A, R4B ＝5.06K, R4A ＝0.86K, R2B ＝64.2K,R6 ＝ 300 and R8, R9 ＝ 990．－R. J. Matheson, Square-Law Defector has 40-db Dynamic Range, Electronics, 39:18, p 95－97．



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