作者的解决这个问题是使用可调谐射频前置放大器这也渠道作为一个低通滤波器调谐88-108兆赫时，低端的带异国情调的地方大部分的谎言。
The author's solution to this problem is to use a tuneable RF preamplifier which also acts as a low pass filter when tuning the low end of the 88-108 MHz band where most of the exotic channels lie.
第一个调谐器接收首款射频信号和输出第一个数字信号。
The first tuner receives the first radio frequency signal and outputs a first digital signal.
第一代的调谐器芯片、射频晶体管和二极管需要高达12至15伏的供电电压。
The first tuner semiconductors, RF transistors and diodes, used supply voltages of as high as 12 to 15V.
在一个例示的实施例中，多波段天线系统100被调谐为在两个通常的射频范围内操作，这两个通常的射频范围通常称作低波段及高波段。
In one exemplary embodiment, the multi-band antenna system 100 is tuned to operate within two general radio frequency ranges which are generally referred to as a low band and a high band.
在未来的多频段和多模式的无线/移动通信中，对于具有宽调谐范围的射频有源滤波器的需要将极为紧迫。
There are pressing needs for RF active filters with wide tuning range for use in multi-band and multi-mode wireless/mobile applications.
为了解决磁共振成像系统中双调谐射频线圈的设计问题，提出了一个通用等效电路模型。
A generalized equivalent circuit model was developed for both single-tuned and double-tuned radio-frequency(RF) coils for Magnetic Resonance Imaging (MRI) systems.
还在理论上分析了射频功率调谐外差频率的原理。
In addition, a theoretical analysis is made for the offset frequency being tuned by RF input power.
注明模具的形象，该xc 3028的单芯片模拟和数字电视调谐器显示完全集成的射频到基带功能块。
Annotated die image of the XC3028 single-chip analog and digital TV tuner showing the fully integrated RF-to-baseband functional blocks.
注明模具的形象，该xc 3028的单芯片模拟和数字电视调谐器显示完全集成的射频到基带功能块。
Annotated die image of the XC3028 single-chip analog and digital TV tuner showing the fully integrated RF-to-baseband functional blocks.
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