1.
The Research and Implementation of Digital up Converter and Digital Down Converter by FPGA;
基于FPGA的数字上下变频器的研究与实现
2.
The Design and Implementation on the Techniques of Digital up Conversion and Digital Down Conversion in the Software Radio;
软件无线电中上下变频技术的设计和实现
3.
Study on Key Techniques of Digital Up/Down Conversion and Digital Phase-Lock-Loop;
数字上下变频及全数锁相环关键技术研究
4.
varactor up-converter
变容二极管上变频器
5.
The Research of the Downconverter of the Intermediate Frequency(if) Digital Receiver;
中频数字化接收机中的下变频器研究
6.
DDC Technology Based on Digital Orthogonal Mixing
基于正交混频的数字下变频技术研究
7.
Application of Digital Up-Converter in IF Digitalization
数字上变频器在中频数字化中的应用
8.
A High Linear CMOS Up-Conversion Mixer;
高线性度的CMOS上变频混频器设计
9.
upper and lower adjacent channel protection margins
上、下邻频道保护裕度
10.
Design of Frequency-converting Control System for PowerFlex70 Converter under the Network Environment
网络环境下PowerFlex70变频器变频调速控制系统设计
11.
The field tester should compare successive readings across the frequency range against a typical pass/ fail line, such as the Class D specification.
当总体的磁场强度变化时，它明显的上下变化，这是因为双绞线对较高的频率不敏感。
12.
A Low Noise,High Gain Direct Down-conversion Mixer
一种低噪声、高增益的直接下变频混频器
13.
Application of digital down converter HSP50214B in IF digital receiver
数字下变频器HSP50214B在中频数字接收机中的应用
14.
The difference, expressed in Hertz, between the two limiting frequencies of a band.
一个频带的上下界频率之差,单位用赫兹表示。
15.
If no video is found, please click Download above.
观看不到视频请点击上面视频软件下载。
16.
Stepless speed change through frequency conversion vertical direction; rapid movement drove by motor in left-right direction; left-right feed through mechanism handwheel; equipped with automatic changing tool device.
上下运动采用变频无级调速；左右有机动快速动作；左右进给为机械手轮；带自动装卸刀装置。
17.
Application of Polyphase Filtering in Wideband DDC
多相滤波在宽带数字下变频中的应用
18.
Research on Digital Down Conversion Using FPGA;
基于FPGA的数字下变频技术的研究