Location:
Search - antenna 0.9.
Search list
Description: J2ME/MIDP应用，生成PalmOS PRC文件-J2ME/MIDP applications, document generation PalmOS PRC
Platform: |
Size: 119849 |
Author: 李端 |
Hits:
Description: 非接触式TYPE A智能卡天线的设计.caj-contactless smart card TYPE A antenna design. CAJ
Platform: |
Size: 110592 |
Author: 胡振清 |
Hits:
Description: J2ME/MIDP应用，生成PalmOS PRC文件-J2ME/MIDP applications, document generation PalmOS PRC
Platform: |
Size: 119808 |
Author: 李端 |
Hits:
Description: 移动通信信道建模、信源和信道编码、扩频调制技术、同步技术、分集和信道均衡技术、多 用户检测技术、智能天线技术、无线资源管理技术、 ... 本书将全面介绍以上各种技术， 内容涵 盖这些技术的起因、发展状况、基本原理、解决方案以及未来发展趋势等。 ...
-mobile communication channel modeling, source and channel coding, spread-spectrum modulation, synchronization technology, diversity and channel equalization technology, multi-user detection technology, smart antenna technology and radio resource management technology, ... the book will be introduced to all the above technologies, which cover these technology causes, development, the basic principle, solutions and future development trends. ...
Platform: |
Size: 245760 |
Author: 李锋 |
Hits:
Description: 电子通信系统的建模与仿真
第9章 天线及智能天线仿真
9.1 全向天线的波束下倾
9.2 天线阵的波达方向估计
9.3 天线阵的波束形成
Platform: |
Size: 704512 |
Author: 军军 |
Hits:
Description: GPS 定位 校时 G591B G591模块产品定义书
1.GPS芯片 :基于 JRC第九代单芯片SH319方案
2.卫星信道 :88通道, (66个捕获通道,22个追踪通道)
3.频率 :L1, 1.57542 GHz, C/A 码
4.启动时间 :<1.5s(热启),<34s(温启),<35s(冷启)
5.功耗 :38mW typical@tracking
6.GPS精度 :<2.5m Position Accuracy； 0.05m/sec Velocity Accuracy
7.信号灵敏度:-164dBm(Tracking)
8.重捕获 :<1s
9.I/O协议 :NMEA 0183 Format v3.01 and backward compliance
10.波特率 :2.4--115.2Kbps
11.配接天线 :有源天线
12.接口 :36pin SMD封装EMI shielded
13.尺寸 :15.9*13.1*2.5
14.应用范围 :PND,追踪器，车载监控等
-G591B G591 GPS positioning when the school books 1.GPS chip module product definition: JRC ninth on a single chip SH319 Option 2. Satellite Channels: 88 channels (channels 66 to capture, track 22 channels) 3. Frequency: L1, 1.57542 GHz, C/A code 4. Start Time: < 1.5s (hot start), < 34s (warm start), < 35s (cold start) 5. power consumption: 38mW typical @ tracking 6.GPS Accuracy: < 2.5m Position Accuracy 0.05m/sec Velocity Accuracy 7. signal sensitivity:-164dBm (Tracking) 8. re-capture: < 1s 9.I/O Protocol: NMEA 0183 Format v3.01 and backward compliance 10. baud rate :2.4- 115.2Kbps 11. matching Antenna: Active antenna 12. Interface: 36pin SMD package EMI shielded 13. Size: 15.9* 13.1* 2.5 14. Applications: PND, Tracker, vehicle monitoring
Platform: |
Size: 563200 |
Author: liubingyang |
Hits:
Description: 读文件数据，用于太阳设备数据处理，得到天线接收太阳的频谱图-Reading file data, data processing equipment for the sun to get the antenna to receive the sun' s spectrum
Platform: |
Size: 1024 |
Author: 电话 |
Hits:
Description: >*** *** *** *** *** *** *** *** *** *** *** ***
>This program works with "capacity_plot_main.m" file.Figs
>2.6,2.7,2.9,2.12 are determined using this program
>SNR is signal-to-noise ratio in dBs
>M -> number of antennas (M x M) system
>corr -> 1 if with correlation, 0 if uncorrelated (for a 2x2 system only)
>value -> correlation coefficient value from 0 ->1
>XPD -> 1 if antenna XPD is to be investigated, 0 if not (for a 2x2 system
>only)
>alpha -> XPD value
>output -> defined by erg and out for ergodic capacity or outage
>capacity respectively ->*********************************************************************
>This program works with "capacity_plot_main.m" file.Figs
>2.6,2.7,2.9,2.12 are determined using this program
>SNR is signal-to-noise ratio in dBs
>M-> number of antennas (M x M) system
>corr-> 1 if with correlation, 0 if uncorrelated (for a 2x2 system only)
>value-> correlation coefficient value from 0->1
>XPD-> 1 if antenna XPD is to be investigated, 0 if not (for a 2x2 system
>only)
>alpha-> XPD value
>output-> defined by erg and out for ergodic capacity or outage
>capacity respectively
Platform: |
Size: 2048 |
Author: TomYang |
Hits:
Description: book of antenna theory
Platform: |
Size: 1773568 |
Author: momar |
Hits:
Description: Puma-EM是由伦敦大学Idesbald van den Bosch
编写的快波多级子算法 用于电磁计算 SAR等用处支持并行 集群-Puma-EM is a code that allows the computation of various electromagnetic quantities when a
target is excited by an electromagnetic source. These quantities are the scattered fields and the
currents on the surface of the target. It can compute:
• monostatic RCS for a variety of angles or positions (SAR)
• bistatic RCS for a variety of angles
• Antenna pattern
• electric and/or magnetic dipole excitation
• plane-wave excitation
• a combination of the above
Platform: |
Size: 576512 |
Author: ldh |
Hits:
Description: ceramics antenna information fotr the nxp user
Platform: |
Size: 738304 |
Author: ahmad |
Hits:
Description: antenna design using matlab patch antenna.
Platform: |
Size: 160768 |
Author: sahil |
Hits:
Description: 远距离蓝牙模块，模块在空旷场所通信距离达到1800米，广泛得被国防科大、武汉大学等众多科研项目配套使用。 模块可以是用在USB蓝牙，也可以用在串口数据无线传输。其串口模块成对使用，对于外界开发来说，其相当于一根蓝牙串口线。您无需考虑繁琐的蓝牙协议，您只需要简单的配置波特率、主从模式，就可以为您的系统增加一个强大的蓝牙功能，您只需要用您的单片机通过串口发送数据就能实现蓝牙通信。蓝牙模块 远距离蓝牙 工业蓝牙 医疗蓝牙 串口蓝牙 USB蓝牙 性能稳定 性价比高 -Description:
Bluetooth Module can be applied to kinds of electronic information products such as family-used equipment and apparatus (medical equipment).As a cable substitute project, it can connect directly with SCM or processor, it adopts plug and play to realize the wireless data transmission between devices. It has two devices used together, a master device and a slave device, which can be used independently or not. It provides safe authentication function, when users set and use it, the connected device must be encrypted, user with encryption can communicate with it, if it is a pair of Bluetooth RS232 module, the process will be completed automatically.
Features and Benifits:
* Bluetooth V2.1+EDR
* On-board antenna or External antenna
* Working temperature:-25~85
* Standard UART interface
* Support multi baud rate(such asl.2k, 2.4, 4.8, 9.6k, 19.2k, 38.4k, 57.6k, 115.2k etc.),
The maximum is 1.384Mbps( the original baud rate is 9.6K)
* Energy saving automat
Platform: |
Size: 515072 |
Author: 刘先生 |
Hits:
Description: 天线工程手册，对于天线工程方面学习相关的重要资料，是工程实践和学习中的必备参考书-antenna engineering
Platform: |
Size: 27772928 |
Author: 王军 |
Hits:
Description: NFC MIFARE FELICA S50 S70 P2P ID卡 动物标签 18092 14443 技术详细介绍
(1)——概念、分类
(2)——国际标准
(3)——能量、调制
(4)——数据编码
(5)——防冲突
(6)——通讯协议概述
(7)——ID卡
(8)——动物标签
(9)——动物标签HDX
(10)——识别号的格式变化
(11)——Mifare系列卡的共性
(12)——三次相互认证
(13)——Mifare S50与Mifare S70
(14)——Mifare S50与S70的存取控制
(15)——Mifare1的安全性及7字节序列号M1卡
(16)——Mifare?UltraLight
(17)——射频卡中数据的存储形式
(18)——Mifare Desfire
(19)——Desfire的3次握手认证和段密码生成
(20)——RC系列射频接口芯片
(21)——RC系列射频芯片的天线设计
(22)——RC系列射频芯片的寄存器操作
(23)——ISO15693的载波、调制与编码
(24)——ISO15693的防冲突与传输协议
(25)——Felica简介
(26)——Felica的文件系统
(27)——CPU卡概述
(28)——基于MF1射频卡的酒店门锁设计
(29)——射频接口芯片TRF7960
(30)——PN512的寄存器设置-NFC MIFARE FELICA S50 S70 P2P ID card animal tag 1809214443 technical details (1)- Concept, classification (2)- International Standard (3)- the energy modulation (4)- data encoding (5)- Anti-collision (6)- Communication Protocol Overview (7)- ID cards (8)- Animal tags (9)- Animal label HDX (10)- Changes format identification number (11)- Mifare series cards common (12)- three mutual authentication (13)- Mifare S50 and Mifare S70 (14)- Mifare S50 and S70 of the access control (15)- Mifare1 safety and 7-byte sequence number M1 card (16)- Mifare UltraLight (17)-? to store data in the form of RF card (18)- Mifare Desfire (19)- Desfire three-way handshake authentication and password generation segment (20)- RC Series RF Interface Chip (21)- RC Series RF chip antenna design (22)- RC Series RF chip register operations (23)- ISO15693 carrier modulation and coding (24)- ISO15693 anti-collision and transmission protocol (25)- Felica Introduction (26)- Felica file system (27)- CPU card Overview (
Platform: |
Size: 28588032 |
Author: cxsys |
Hits:
Description: IEEE 近期发表的关于宽带宽角的天线阵列文章9篇-recently published papers in IEEE about wideband widescan antenna array
Platform: |
Size: 13481984 |
Author: zhu |
Hits:
Description: collected antenna problems
Platform: |
Size: 560128 |
Author: tustic |
Hits:
Description: An antenna array is a set of individual antennas used for transmitting and/or receiving radio waves, connected together in such a way that their individual currents are in a specified amplitude and phase relationship. This allows the array to act as a single antenna, generally with improved directional characteristics (thus higher antenna gain) than would be obtained the individual elements. The resulting array in fact is often referred to and treated as an antenna, particularly when the elements are in rigid arrangement with respect to each other, and when the ratio of currents (and their phase relationships) are fixed. On the other hand, a steerable array may be fixed physically but has electronic control over the relationship between those currents, allowing for adjustment of the antenna s directionality without requiring physical motion.-An antenna array is a set of individual antennas used for transmitting and/or receiving radio waves, connected together in such a way that their individual currents are in a specified amplitude and phase relationship. This allows the array to act as a single antenna, generally with improved directional characteristics (thus higher antenna gain) than would be obtained the individual elements. The resulting array in fact is often referred to and treated as an antenna, particularly when the elements are in rigid arrangement with respect to each other, and when the ratio of currents (and their phase relationships) are fixed. On the other hand, a steerable array may be fixed physically but has electronic control over the relationship between those currents, allowing for adjustment of the antenna s directionality without requiring physical motion.
Platform: |
Size: 28327936 |
Author: RED |
Hits:
Description: Lets use Hata model for a medium city to find the received signal levels at various distances = 3, 6, 9,
12 and 15 Kilometers the base station operating at 870 MHz. The following data is given:
Height of the radiation centerline measured the base of the BTS = 50 m
Terrain elevation at the location of the BTS = 350 m
Average terrain height = 300 m
Height of the mobile antenna = 3 m
Power delivered to the BTS antenna = 19.5 W
Gain of the BTS antenna = 10 dBi
Gain of the mobile antenna = 0 dBi-Lets use Hata model for a medium city to find the received signal levels at various distances = 3, 6, 9,
12 and 15 Kilometers the base station operating at 870 MHz. The following data is given:
Height of the radiation centerline measured the base of the BTS = 50 m
Terrain elevation at the location of the BTS = 350 m
Average terrain height = 300 m
Height of the mobile antenna = 3 m
Power delivered to the BTS antenna = 19.5 W
Gain of the BTS antenna = 10 dBi
Gain of the mobile antenna = 0 dBi
Platform: |
Size: 1024 |
Author: mjahidi |
Hits:
Description: EkVod影视系统是一套采用PHP+MYSQL数据库方式运行的全新且完善的强大影视系统。 一键安装，一键采集，一键生成的PHP电影系统 01.支持所有主流FLV视频站及P2P 全面支持优酷，新浪，土豆，56，六间房，qq，youtube等flv资源，天线高清，新浪高清，土豆高清等高清flv采集！-EkVod Cinema system is a set of used PHP+ MYSQL running a new television and a powerful sound system. A key installation, a key acquisition, a key generated PHP movie system 01. Supports all major FLV video station and P2P full support for Youku, Sina, potatoes, 56, six rooms, qq, youtube and other flv resources antenna HD, Sina HD HD HD flv potato collection!
Platform: |
Size: 1998848 |
Author: lqb |
Hits: