介绍了一种应用于C波段接收机射频前端，并利用耦合微带线设计的射频滤波器。
An RF fitter, which is applied to C-band receiver RF front and designed with the coupling micros - trip line, is introduced.
子电路包括低噪声放大器、射频滤波器、混频器、驱动放大器、功率放大器、中频滤波器等。
The subcircuits consist of the low noise amplifier, RF filter, mixer, driver amplifier, image filter, power amplifier, transmit-receive switch and if filter and so on.
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.
在现代通讯系统中，射频的前端和终端都需要低损耗和通带平坦紧凑的滤波器来提高整个系统的性能。
In modern telecommunication systems, it is important to make filters with low loss and flat passband to enhance the whole performance of the system in the front and end of rf circuits.
基于PIN二极管开关电路在射频信号切换方面的特性，设计了一种应用于滤波器切换的PIN电子开关电路。
Based on characteristics of PIN diode switch circuit in rf signal switching, a PIN electronic switch circuit is designed to perform filter switching.
正因为这样，才使SAW滤波器在电子信息领域中得到了越来越广泛的应用，特别是应用于高频端rf射频信号滤波。
Because of these, SAW Filter is more and more comprehensively applied in electronic information field, especially in RF signal processing field.
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.
为了验证理论分析，设计了射频调制法测试介质膜滤波器群速度延时的实验装置。
To validate the theoretical analysis, a test system for group velocity delay was set up based on RF modulation.
第一章，介绍了射频、微波滤波器的研究背景和最新进展。
In Chapter 1, the research background and recent developments about RF and microwave filters are reviewed.
滤波器的实际实现采用在当今射频通信器件设计中流行的LTCC技术。
The practical realization of this filter makes use of the LTCC technology that is popular in the design of RF devices.
本文以射频段广义切比雪夫滤波器和双工器的综合与研制为主，研究了与之相关的理论与技术。
This gave emphasis to the synthesis and design of the general Chebyshev filters and duplexers, and studied the related theories and technologies.
最佳的IDT孔径和孔径比值由计算滤波器衍射频响确定。
The optimal IDT aperture and the aperture ratio are determined by calculating diffraction response.
驱动放大器放大信号到一个可以接受的输入量级以驱动功率放大器，放大后的射频信号被传送到天线分离滤波器进行滤波，最后通过天线发射出去。
The driving amplifier enlarges signal to reach an adaptive level in order to drive the power amplifier. The enlarged signal is delivered to a filter and transmitted through an antenna.
驱动放大器放大信号到一个可以接受的输入量级以驱动功率放大器，放大后的射频信号被传送到天线分离滤波器进行滤波，最后通过天线发射出去。
The driving amplifier enlarges signal to reach an adaptive level in order to drive the power amplifier. The enlarged signal is delivered to a filter and transmitted through an antenna.
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