This dissertation first analyzes the properties of RFI and investigates its impacts on the key parts of UWB-SAR.
射频干扰是工作在VHF/UHF波段的叶簇和地表穿透超宽带合成孔径雷达面临的突出问题。
This invention relates to a circular small UHF antenna with high dielectric constant and its processing method, among which, the UHF antenna characterizes that 1, it is composed of a radiation plate, a feed point and a medium chip, 2, the radiation plate is closely adhered to the top surface of the medium chip, the bottom surface is the metal ground face, the chip and the radiation plate is rectangle or square, 3, the feed point is at the 1/3 place of the diagonal line of the rectangular or square radiation plate apart from the top point.
本发明涉及一种高介电常数圆极化小型超高频天线及其制作方法。UHF天线特征在于(1)所述的超高频天线是由辐射贴片、馈电点和介质基片组成；(2)辐射贴片紧贴在介质基片的上表面，介质基片的下表面为金属接地面；介质基片和辐射贴片呈矩形或正方形；(3)馈电点位于矩形或正方形的辐射贴片的对角线离顶点的1/3处。其制作方法是采用ε≥38高均匀性陶瓷基片，再结合丝网印刷技术完成厚膜焙银后形成辐射贴片，然后再圆极化。具有制作工艺成熟、体积小及使用灵活等特点。
Secondly, for the spascial AF C* algebra-UHF algebra, I study the linear characterization of 2-local isometry on it: make use of the frame attribute, find the trace state of UHF algebra according to the one of matrix algebra and verify the 2-local isometry is linear.
充分利用UHF代数的结构特点，利用矩阵代数的迹态找到UHF代数的迹态，从而证明了2-局部等距的线性性质。
Guangzhou Liang Audio Equipment Co., Ltd. is a production and sales of audio equipment manufacturing company located in the beautiful city of Guangzhou, the main production of UHF wireless microphone, amplifier, etc. to perform professional electronic products, our products have been present in the domestic be used outside of the client agreed the Division I spirit: good faith.
广州梁氏音频器材有限公司是一家生产，销售于一体的音响器材制造企业，公司设在美丽的广州市，主要生产UHF无线麦克风，专业演出功放机等电子产品，目前我司产品已在国内外使用得到客户的一致认同，我司本着：诚信。
In the first design, one UHF Balun is attached to the antenna for 75ohm to 300ohm impedance matching.
在第一个天线的设计中，利用一个 UHF Balun 连接设计出来的天线以作为75 转 300 ohm 阻抗的匹配。
Electrical characteristics and radiation characteristics of papery substrate small loop antenna were calculated and simulated.
以UHF(860~960 MHz)频段的RFID标签天线设计为背景，对以纸质基材为天线衬底的小环天线的阻抗特性和辐射特性进行了理论计算和仿真。
Standard enthalpy changes of the initial pyrolysis process of ethylbenzene were computed by five methods (UAM1, UHF/3-21G*, UB3LYP/3-21G* and UB3LYP/6-31G*). UB3LYP/6-31G* due to its accuracy compared to the experimental values was chosen to calculate the thermodynamic and kinetic parameters of the process at different temperature ranges (298~1573 K). The computation results showed that ethylbenzene began to pyrolyze at 973 K and the main product was styrene.
对乙苯的初期热裂解过程，用三种方法结合两种基组(UAM1、UHF/3-21G~*、UB3LYP/3-21G~*和UB3LYP/6-31G~*)计算了标准反应焓变，经与实验值进行对比，筛选出计算结果精确的UB3LYP/6-31G~*方法，并以此获得了乙苯初期热裂解过程在298～1573 K范围内的热、动力学参数。
Type: Amateur HF/VHF/UHF transceiver Frequency range: TX: 10-160 m + WARC and 60 m/6 m/2 m/70 cm RX: 0.1-76/108-174/420-512 MHz Mode:...
类型：业余高频/甚高频/超高频收发器频率范围：德克萨斯州：10-160米+联谊会和60米/ 6米/ 2米/ 70厘米接收：0.1-76/108-174/420-512 MHz的模式：。。
This new technology inserts UHF and HF inlays under die-cut blank or pre-printed labels and validates the finished product.
这项新技术插入UHF和HF标签下模切空白或预印标签和验证成品。
Owing to slow recessing and long travel distance of the UHF radio waves, this system can transmit
此系统利用无线高频电波在隧道中衰减慢、输距离远的特性，实现了洞内图像的传输和洞内、语音交互。
Owing to slow recessing and long travel distance of the UHF radio wav es, this system can transmit the imag es in tunnel and implement active talk.
此系统利用无线高频电波在隧道中衰减慢，输距离远的特性，实现了洞内图像的传输和洞内，语音交互。
Establish/utilize existing personnel safety and security radio net (typically VHF/UHF voice).
建立/使用现有的个人安全无线电网络（通常是 VHF/UHF 语音）。
Standards, such as the UHF Generation 2 RFID tag, will help drive widespread adoption.
标准的开发，如超高频第二代 RFID 标签出现，将会极大地推动 RFID 技术的广泛采用。
UHF-band use 868MHz and 950MHz chips, coil section thickness of about 4 μm.
UHF波段使用868MHz和950MHz的芯片，线圈截面厚度约为4μm。
Firstly, according to spectrum characteristics of transmitter and link parameters of receiver in UHF RFID, the specification of the frequency synthesizer has been analyzed systemically in Reader, and it has been proven correct by the system simulation model.
首先，根据UHF RFID阅读器中发射机的频谱特性和接收机的链路特征，本文系统地分析了阅读器中频率合成器的设计指标，并通过仿真模型验证了指标的正确性。
In order to enhance the performance of the regulator circuit, through the analysis of one stage shunt regulator circuit, this paper proposes a new type of two stage regulator circuit, which can be used in UHF RFID tag.
为了提高稳压器的性能，通过对一级分流稳压电路的研究，提出了一种新型的，可以用于超高频射频标签中的两级分流稳压电路。
Radio systems operating in the frequency range from 300 to 1, 000 MHz are classified as UHF.
电系统运行于频率范围从300到1，000兆赫被归类为UHF。
Tests show that based on the UHF detection system has good effects of on-site detection
试验表明该基于UHF的检测系统具有较好的现场测量效果
Data rates as high as 9600 band have been demonstrated on these new UHF channel.
数据传输速率高达9600波段已经表现出对这些新的UHF频道。
This is a typical case for an RHF/UHF instability
这是一种典型的RHF/UHF不稳定性。