查询词典 radio frequency

Because of the rapid development of the wireless communication technology, the design and research of the integrated circuits in the related field has gained more and more attention in recent years. And with the advance of the IC process technology, the cutoff frequency of MOS devices can reach several giga herz or more. It is a trend that CMOS process will replace the III-V compound process such as gallium arsenide or silicon bipolar process which were dominant in the fields of radio frequency and microwave.

近年来，由于无线通信技术的飞速发展，相关领域的集成电路的设计研究也受到越来越多的关注；同时由于工艺技术的不断进步，MOS器件的特征频率也可以达到几个GHz或更高的水平，原来在射频、微波领域占主导地位的三五族化合物半导体工艺如砷化镓及硅双极型工艺也有逐渐被CMOS工艺所取代的趋势。

Frequency range from audio, video, radio frequency to the microwave band.

频率范围由音频、视频、射频到微波波段。

The relationship between the changes of radio-frequency signal frequency and Bragg diffraction angle is analyzed, spatial filtering characteristic resulted from acousto-optic deflection effects is discussed.

实验表明，采用波长为630 nm的单频激光，带宽为200 MHz的声光偏转器，其频率分辨率优于1 MHz，频率信号的空间分离效果明显，接收灵敏度和信噪比得到改善。

The dielectric relaxation is non-Debye dielectric relaxation when slow polarization effect cannot be neglected in the samples. And from low frequency to radio frequency, the complex ε of the samples is not consistent with Kramers-Kroning relation.

实验表明：介质中慢极化效应的存在使得其介电弛豫普遍都不是德拜型的；在超低频至射频的广阔频段，样品的复ε不满足Kramers-Kroning关系。

Moreover, the IGBT radio frequency amplification phenomena, can become relevant if the driver circuit generates high frequency conducted noise components, that can be transferred to the final stage and amplified, generating very high EMI levels.

此外，如果驱动电路产生的高频传导噪音被放大传递到末级，相应的IGBT射频放大现象可以产生更高的EMI。

Check your radio frequency with the proper operating frequency of the area or country.

请您确认您所在地区对於频率规定之相关法规，来选用适当的频率，避免与其他同好使用相同频率造成失控事件。

When net scale is expanding , because the limited of frequency souse ,frequency reusing radio will increase .

在网络规模不断扩大的情况下，由于频率资源的限制，频率复用度必然增加。

Since the superheterodyne receiver was invented, mixer has long been the research focus in communication and radio frequency circuit fields, which is the key component to realize the frequency translation.

自从超外差接收机的结构被提出以后，混频器作为其中实现频率搬移的关键部件一直都是通信和射频电路研究的热点。

This paper presents a low voltage, low power RF/analog front-end circuit for passive ultra high frequency radio frequency identification tags.

提出了一种适用于无源超高频射频识别标签的低电压低功耗射频／模拟前端电路。

ST company vice president holds Thierry Tingaud of general manager of rising market district concurrently to count product of electron of word multimedia, car and intelligence to get stuck in cite / wireless radio frequency identifies expresses when example,"In fact, meaning law semiconductor has made the whole world the number one supplier that the biggest machine carries box chip supplier and car on the head to use chip, the biggest supplier of the market of chip of ultrahigh frequency RFID that develops quickly still at the same time."

ST公司副总裁兼新兴市场地域总司理 Thierry Tingaud 在征引数字多媒体、汽车电子产物以及智能卡/无线射频识别的应用实例时暗示，"事实上，意法半导体已经成为寰球第一大机顶盒芯片供给商和车用芯片的头号供给商，同时仍是敏捷成长的超高频 RFID 芯片市场的最大供给商。"

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48