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来源:百度知道 编辑:UC知道 时间:2024/05/22 18:40:18
2. Prior Art
Conventional intermittent operation receivers are generally equipped with a special function for activating their receiving sections intermittently to lengthen the lifetime of their batteries. FIGS. 5 through 7 show an example of this kind of conventional intermittent operation receiver. FIG. 5 is a schematic block diagram showing an intermittent operation receiver applied to a conventional direct-conversion type receiver. FIG. 6 is a graph showing a frequency stabilization time of a PLL circuit used in this conventional intermittent operation receiver in relation to an intermittent operating cycle of this conventional intermittent operation receiver together with a given stationary pre-heat time in accordance with this conventional technology. FIG. 7 is a timing chart showing a correlation between an operation timing of a receiver circuit and an operation timing of the PLL circuit in connection with the behavior of the frequency convergence of the PLL circuit.
Conventional intermittent operation receivers are generally equipped with a special function for activating their receiving sections intermittently to lengthen the lifetime of their batteries. FIGS. 5 through 7 show an example of this kind of conventional intermittent operation receiver. FIG. 5 is a schematic block diagram showing an intermittent operation receiver applied to a conventional direct-conversion type receiver. FIG. 6 is a graph showing a frequency stabilization time of a PLL circuit used in this conventional intermittent operation receiver in relation to an intermittent operating cycle of this conventional intermittent operation receiver together with a given stationary pre-heat time in accordance with this conventional technology. FIG. 7 is a timing chart showing a correlation between an operation timing of a receiver circuit and an operation timing of the PLL circuit in connection with the behavior of the frequency convergence of the PLL circuit.
2 。事先艺术
常规间歇运行接收器一般都装有一个特殊功能,为启动其接收路段间歇性延长寿命其电池。无花果。五,通过7显示的一个例子,这种传统的间歇运行接收器。图。 5是一个示意图方框图显示一个间歇运行接收器适用于一个常规的直接转换型接收器。图。六是一个图表,显示频率稳定时间一锁相回路在这个传统的间歇运行接收机有关间歇运行周期这一传统间歇运行接收机加上某一固定的预热时间,按照这个常规技术。图。 7是一个时序图呈现出相关关系的一项行动的时间,一个接收电路和一项行动的时机锁相回路涉嫌与行为的频率衔接的锁相环电路。