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    • 7. 发明申请
    • ANALOGUE MODULATION METHOD AND MONOLITHIC INTEGRATED CIRCUIT WITH MIXER STAGE COMPRISING NON-POLARISED FIELD-EFFECT TRANSISTORS
    • 具有非极化场效应晶体管的混频器的模拟调制方法和单片集成电路
    • WO00039918A1
    • 2000-07-06
    • PCT/FR1999/003276
    • 1999-12-23
    • H03C1/54H03C7/02
    • H03C1/547H03C7/025
    • The invention concerns a method and a circuit for analogue phase and/or amplitude modulation of a high frequency carrier signal with an Î or Q low frequency analogue modulation signal, comprising at a least mixer stage (5, 6) including two field-effect transistor, called modulation transistors (21, 22), mounted with the sources (23, 24) jointly connected to ground, and whereof the drains (25, 26) are not polarised. The method consists in applying on the gates (30, 31) of the modulation transistors (21, 22) I or Q modulating analog electric signals, I or Q at low frequency matching each other, whereof the amplitude is less than a maximum value Amax beyond which the power of the signal modulated in output is no longer proportional to the power of the modulating signal.
    • 本发明涉及一种用于具有β或Q低频模拟调制信号的高频载波信号的模拟相位和/或幅度调制的方法和电路,其包括至少混合级(5,6),包括两个场效应晶体管 ,称为调制晶体管(21,22),其安装有共同连接到地的源极(23,24),并且其中的漏极(25,26)不被极化。 该方法包括在调制晶体管(21,22)I或Q的栅极(30,31)上施加低频调制模拟电信号,即低频或低电平Q 彼此匹配,其幅度小于最大值Amax,超过该最大值Amax,在输出中调制的信号的功率不再与调制信号的功率成比例。