首页>
外国专利>
METHOD AND CIRCUIT FOR A FAST REDUCTION IN VOLTAGE OF A DC COMPONENT AND LOW-FREQUENCY COMPONENTS AT A MIXING CIRCUIT OUTPUT IN A RECEIVER OF A UHF TRANSCIEVER
METHOD AND CIRCUIT FOR A FAST REDUCTION IN VOLTAGE OF A DC COMPONENT AND LOW-FREQUENCY COMPONENTS AT A MIXING CIRCUIT OUTPUT IN A RECEIVER OF A UHF TRANSCIEVER
展开▼
机译:特高频接收器中混合电路输出端直流分量和低频分量的电压快速降低的方法和电路
展开▼
页面导航
摘要
著录项
相似文献
摘要
A difference between an output current signal (mos) of the mixing circuit (MC) and a current from a controlled current source (CCS) is conducted to an input of an operational amplifier (A). A control voltage (cv) for said current source is a voltage at the output of the operational amplifier (A) being filtered by a low-pass filter, whose limiting frequency equals a low frequency limit of the modulation signal in the received signal (rs). The method is speeded up in that the limiting frequency of the low-pass filter is increased by two to three orders of magnitude at the beginning and is gradually lowered to said value. A rather short time duration of the transient process is achieved so that the working point with a low voltage of the DC component and low-frequency components is set at least five times faster than so far.
展开▼