电子与封装
電子與封裝
전자여봉장
EIECTRONICS AND PACKAGING
2011年
9期
32-33,37
,共3页
开关%放大器%宽带
開關%放大器%寬帶
개관%방대기%관대
switch%amplifier%wide frequency band
文中介绍了一种限幅开关放大器组件的设计。该组件在接收大信号时通过控制信号来控制射频开关，使信号直通通过；接收小信号时通过控制信号来控制射频开关，使信号通过放大器放大输出，从而使输入信号功率在大范围变化时输出信号保持在一定范围内，起到扩展动态范围的作用。其主要特点是频带宽、增益高、开关速度快。限幅器的作用是使组件在有超出后续电路承受的大功率信号输入时衰减输入信号，保护后续电路在大功率信号下不损坏。开关的作用是对组件的直通和放大两支路进行切换，放大器的作用是对输入小信号进行放大。
文中介紹瞭一種限幅開關放大器組件的設計。該組件在接收大信號時通過控製信號來控製射頻開關，使信號直通通過；接收小信號時通過控製信號來控製射頻開關，使信號通過放大器放大輸齣，從而使輸入信號功率在大範圍變化時輸齣信號保持在一定範圍內，起到擴展動態範圍的作用。其主要特點是頻帶寬、增益高、開關速度快。限幅器的作用是使組件在有超齣後續電路承受的大功率信號輸入時衰減輸入信號，保護後續電路在大功率信號下不損壞。開關的作用是對組件的直通和放大兩支路進行切換，放大器的作用是對輸入小信號進行放大。
문중개소료일충한폭개관방대기조건적설계。해조건재접수대신호시통과공제신호래공제사빈개관，사신호직통통과；접수소신호시통과공제신호래공제사빈개관，사신호통과방대기방대수출，종이사수입신호공솔재대범위변화시수출신호보지재일정범위내，기도확전동태범위적작용。기주요특점시빈대관、증익고、개관속도쾌。한폭기적작용시사조건재유초출후속전로승수적대공솔신호수입시쇠감수입신호，보호후속전로재대공솔신호하불손배。개관적작용시대조건적직통화방대량지로진행절환，방대기적작용시대수입소신호진행방대。
Presented here is a module of switch and amplifier with limiting amplitude, which can let high power signal get through and amplify low power signal to output by controlling RF switch, in order to extend the dynamic range of the power of input signal by limiting the power of output signal in some specific range. The characteristics of this module are wide frequency band, high gain and rapid switching. Limiter is the role of the circuit components in a follow-up to withstand the high input power signal, attenuate the input signal when it is so high that the follow-up circuit can not stand. Switch is the role of direct and amplify the component two way switch. The role of the input amplifier is to amplify the smallpower-level signal.
