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Method and system for a differential switched capacitor array for a voltage controlled oscillator (VCO) or a local oscillator (LO) buffer
Method and system for a differential switched capacitor array for a voltage controlled oscillator (VCO) or a local oscillator (LO) buffer
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机译:用于压控振荡器(VCO)或本地振荡器(LO)缓冲器的差分开关电容器阵列的方法和系统
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摘要
Methods and systems for increasing an amplifier circuit's Q factor are disclosed herein. The method may comprise coupling a first LC tank to a source of a single switching transistor and coupling a second LC tank to a drain of the single switching transistor. A gate of the single switching transistor may be controlled by an amplifier core coupled to the first LC tank and the second LC tank. A resistance of the first LC tank and the second LC tank may be decreased by about one half, which increases the Q factor by about two. The gate of the single switching transistor may be controlled by a control signal generator coupled to the amplifier core. The first LC tank and/or the second LC tank may be tuned to a frequency of about 3.4 GHz to 4 GHz. The single switching transistor may comprise an NMOS transistor.
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