英语翻译A wideband amplifier is described which utilizes twodifferent channels for the amplification of the high- andlow-frequency components of the input signal.Due tothe unique feedback configuration,the low-frequencychannel contributes only wh

英语翻译A wideband amplifier is described which utilizes twodifferent channels for the amplification of the high- andlow-frequency components of the input signal.Due tothe unique feedback configuration,the low-frequencychannel contributes only wh
英语翻译
A wideband amplifier is described which utilizes two
different channels for the amplification of the high- and
low-frequency components of the input signal.Due to
the unique feedback configuration,the low-frequency
channel contributes only where the gain of the highfrequency
channel decreases.Therefore,there is no need
for frequency splitting at the input.
Commercially available operational amplifiers,utilizing
either current or voltage feedback,are limited at
moderate gains of for instance ten-fold to an upper
frequency in the range of 100–300 MHz; which results in
transition times of from one to several nanoseconds.
They also have the drawback of possessing high input
currents.If wider frequency ranges and low input
currents are required,the described method for the
construction of a wideband dc-coupled amplifier becomes
appropriate,especially in as much as today
integrated microwave amplifiers with an upper frequency
of several gigahertz are available at low prices
as do transistors with transition frequencies in the
gigahertz range.

英语翻译A wideband amplifier is described which utilizes twodifferent channels for the amplification of the high- andlow-frequency components of the input signal.Due tothe unique feedback configuration,the low-frequencychannel contributes only wh
一种新型宽带放大器使用双通道分别放大输入信号的高频及低频部分.由于独特的反馈设计,低频通道只在高频通道减弱时才发挥作用,因此在输入信号时无需分频.市场上可供的放大器使用电流或者电压反馈,对100-300兆赫兹的高频只有10倍左右的增益,造成1到数微秒转换时间的拖延,同时还有高输入电流的缺陷.如果需要处理更宽频率范围及微弱的输入信号,使用上述方法组建的宽带直流耦合放大器将更为理想,尤其是目前数千兆高频集成微波放大器的价格已经降到了千兆级过渡频率的晶体管的水平.

没什么意义 就是说午餐菜色介绍