baseband frequency

Implementation and Design of Baseband Controller for Low Power High Frequency RFID Tag IC

一种低功耗高频RFID标签芯片基带控制器

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This article introduces the core chip ( baseband chip and radio frequency chip), uses "the Chinese clip group" SCDMA colored screen handset design and application.

介绍了核心芯片（基带芯片与射频芯片）采用中国芯的SCDMA彩屏手机的设计与应用。

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Hardware system design is to complete the baseband processor unit design of radar system, including choosing the A/ D converter, determining the DSP chip and its peripheral circuit operating frequency, connections of DSP and MCU.

硬件系统设计，完成对雷达测速仪基带处理单元的设计，包括A/D转换器的选择，确定DSP芯片及其外围电路的工作频率元器件的选择，硬件连接电路的设计，工作方式设置等。

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Secondly, the characteristic of baseband signal and frequency band signal in RFID system are analyzed.

其次，分析射频识别系统基带信号与频带信号的特性，以及信道噪声与干扰的特点，指明信号的潜在影响因素。

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The excitation method which residual signal produced from baseband extraction and high frequency, reproduction is introduced.

对基带提取&高频再生残余信号的激励方式亦作了相应的介绍。

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Research on the Baseband and Intermediate Frequency Units of Digital Microwave Transceiver

数字微波收发信机（基带、中频）研究

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That is mixing the baseband signal ( linear frequency modulation signal and sinusoid signal) with two orthogonal local oscillated signal generated using direct digital synthetic technology to move the baseband signal to intermediate frequency band.

同样运用直接数字合成技术产生基带信号&线性调频信号和正弦信号，与本地载波混频后，将其频谱搬移到中频，完成数字上变频。

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To satisfy the PCM telemetry baseband equipment performance requirements of the ground system of Beijing TTC& M earth station, a new design technique of digitized synthesizer whose output frequency can be changed continuously ( resolution: 1Hz) is proposed in this paper.

针对北京TTC＆M站地面编码遥测基带设备的性能指标要求，设计了一种高性能数控连续可调频率合成器，应用于航天测控系统中。

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The reason lies in the fact that DPD avoids the complicated radio frequency signal processing, while only deals with the baseband signals at low frequency to facilitate the hardware implementation.

这是由于DPD不涉及复杂的射频信号处理，而只是在低频部分对基带信号进行处理，便于实际硬件实现。

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This paper introduces the characteristics of hopping frequency technology and the utilization of baseband and RF hopping frequency technology.

文中阐述了跳频技术的特点及基带和射频跳频技术的具体使用方法。

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