In communications , the amplitude variations of an amplitude modulated carrier wave 在通信技术中,调幅载波的幅度变化图。
Industrial - process control valves . flow capacity . inherent flow characteristics and rangeability 工业过程用调节阀.流量.固有流量特性和幅度变化范围
In communications , to reduce a signal ' s parameter , such as bandwidth , amplitude variation , duration , and so on , but with the preservation of the basic information content and purpose 在通信技术中,减少信号的参数或特征值,如带宽、幅度变化、持续时间等。但该信号的基本信息内容和用途保持不变。
A device that converts a property of an input signal , such as frequency or phase , into an amplitude variation , depending on how the signal differs from a standard or reference signal 鉴别器,鉴频器一种将输入信号的某一特征,如频率或相位转变为幅度变化装置,其变化大小因信号与标准或参考信号的不同程度而异
Shaped pattern synthesis originated with schelkunoff in 1943 . however , the current magnitude variations could not be effectively controlled by most conventional approaches until michael . j . buckley in 1993 employed the implicitly constrained current elements in the optimization process 传统的赋形波束综合算法没有对电流幅度加以有效的控制,综合得到的电流幅度变化较大,给馈电网络的设计和实现造成很大困难。