无线王者：Atheros 5418/5008 AR5BXB72目前最牛的N频无线网卡!!!
比起早前的那一些A/B/G这一些标准更进一层!
最高可支持300M!为内置模块的顶级者,现新ThinkPad系列在网络功能方面的重大变革，
是放弃了Intel的Centrino平台架构，不再使用Intel 3945ABG无线网卡，而是换成支持802.11n草案标准的MIMO网卡。
*成色:全新
*设备接口: Mini PCI EXPRESS
*技术标准: IEEE 802.11b, 802.11g, 802.11d, 802.11h, 802.11i and 802.11j
*传输介质: 2.4G & 5.8G Wireless
*传输速率: 802.11b: Up to 11 Mbps; 802.11g；SUPER
*最大传输速率: 300 Mbps
适用机器: 联想 华硕 神舟 七喜 中柏 新蓝 清华同方.宏基 明基……除了IBM...HP...机器不可以用
注：由于目前只是 802.11N 草案阶段，因此各品牌的 11N 路由器并不一定会 300M 连接，显示270M，130M，144M等都属于正常的情况，并非产品问题，请各位购买者注意。
引用官方数据
AR5008E-3NG
Highest performance 2.4 GHz client solution with PCI-Express? support
The Atheros AR5008 chipsets are Atheros’ highest performance
wireless LAN solutions to date. AR5008 products are compliant to the
draft 802.11n specification, to deliver the ultimate wireless triple
play experience for video, voice and data transmission throughout the
home or office.
AR5008E-3NG Solution Highlights
? Second generation ultra high-performance MIMO wireless
LAN client solution
? IEEE draft 802.11n wireless LAN client and AP technology
? Enhanced performance with Atheros XSPAN technology optimized
for higher throughput at long range
? Support for up to 3x3 MIMO with spatial multiplexing
? Enables PHY rate of up to 300 Mbps
? WLAN MAC and baseband processing engine
? Three single band WLAN radios operate from 2.300 to 2.500 GHz
? Compliant with IEEE 802.11b, 802.11g, 802.11d, 802.11e, 802.11i
and draft 802.11n
? Available in commercial and industrial temperature grades
? Lead-free RoHS compliant
AR5008E-3NG Specifications
Frequency Band 2.300 to 2.500 GHz
Network Standard 802.11b, 802.11g, draft 802.11n
Modulation Technology OFDM with BPSK, QPSK, 16 QAM,
64 QAM; DBPSK, DQPSK, CCK
FEC Coding Rate 1/2, 2/3, 3/4, 5/6
Hardware Encryption AES, TKIP, WEP
Quality of Service 802.11e
Communication Interface PCI-Express
Peripheral Interface GPIOs, LEDs
Memory Interface EEPROM
Supported Data Rates
IEEE 802.11b 1 - 11 Mbps
IEEE 802.11g 6 - 54 Mbps
XSPAN 6.5 - 300 Mbps
AR5008E-3NG
| | | Product Bulletin
Download Acrobat PDF |  |
Atheros XSPAN?Technology
Expanding performance. Expanding possibilities.
The Atheros AR5008 chipsets are Atheros?highest performance
wireless LAN solutions to date. AR5008 products are compliant to the
draft 802.11n specification, to deliver the ultimate wireless triple
play experience for video, voice and data transmission throughout the
home or office.
Video:With real world throughput levels up to 300 Mbps PHY rate, new wireless routers and gateways featuring Atheros XSPAN technology will readily accommodate multiple high-definition (HD) streams on a single home network.
Voice:Single-antenna wireless voice handsets and legacy devices networked to Atheros-based access points achieve range and robustness from Atheros?triple transmitter architecture.
Data:The array of data applications ranging from simple network computing to transmission of large data, music or image files is enhanced through the high bandwidth provided by XSPAN products.
Product Overview
With the introduction of new bandwidth intensive applications and growth of Gigabit Ethernet ports, there is increasing demand for wireless LAN throughput. Featuring the Atheros AR5008E-3NG, our first 2.4 GHz IEEE draft 802.11n WLAN solution. The Atheros
AR5008E-3NG dramatically increases the overall throughput of the wireless LAN by supporting link rates as high as 300 Mbps - an improvement of nearly six times the throughput of standard 802.11g.
The AR5008E-3NG is interoperable with standard 802.11b and 802.11g devices and fully supports industry standards compliant security and Quality of Service (QoS). Full reference design support is available.
Solution Highlights - Second generation ultra high-performance MIMO wireless LAN client
and access point solution - IEEE draft 802.11n wireless LAN client and AP technology
- Enhanced performance with Atheros XSPAN technology optimized for
higher throughput at long range - Support for up to 3x3 MIMO with spatial multiplexing
- Enables bandwidth of up to 300 Mbps PHY rate, six times the throughput
of 802.11g - WLAN MAC and baseband processing engine
- Three single-band WLAN radios operate from 2.300 to 2.500 GHz
- Compliant with IEEE 802.11b, 802.11g, 802.11d, 802.11e, 802.11i and
draft 802.11n - Available in commercial and industrial temperature grades
- Lead-free RoHS compliant
AR5418 MAC/Baseband Processor
- Intelligent MIMO spatial multiplexing techniques
- Backwards compatibility with legacy 802.11
- Hardware encryption engine to support WEP, TKIP and AES
- PCI-Express 1.0a client interface
- Integrated analog-to-digital and digital-to-analog converters
- AR2133 3x3 MIMO Radio
- Three integrated single-band 2.4 GHz radios
- Eliminates all IF filters and most RF filters; no external voltage-controlled
oscillators (VCOs) or surface acoustic wave (SAW) filters needed - Support for 20 and 40 MHz channels
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AR5008E-3NG Specifications | | Frequency Band | 2.300 to 2.500 GHz | | | | | Network Standard | 802.11b, 802.11g, draft 802.11n
| | | | | Modulation Technology | OFDM with BPSK, QPSK, 16 QAM, 64 QAM; DBPSK, DQPSK, CCK
| | | | | FEC Coding Rate | 1/2, 2/3, 3/4, 5/6 | | | | | Hardware Encryption | AES, TKIP, WEP
| | | | | Quality of Service | 802.11e | | | | | Communications Interface | PCI, CardBus | | | | | Peripheral Interface | GPIOs, LEDs | | | | | Memory Interfaces | EEPROM | | | | | Supported Data Rates | | | IEEE 802.11b | 1 to 11 Mbps | | IEEE 802.11g | 6 to 54 Mbps | | XSPAN | 6.5 to 300 Mbps | | | |
AR5008的特点是：为了实现3×3的MIMO（多路输入/多路输出）通信。在1枚芯片上集成了3个独立的无线电路。 Atheros创新的XSPAN引进讯号持续技术(Signal-Sustain Technology，SST)大幅加强讯号可靠性与覆盖范围内的数据传输量，全面释放MIMO的潜力。这一切皆因全球首颗单芯片三射频设计而获得实现。AR5008的实体数据速率为300 Mbps (每秒兆位)而实际终端使用者数据传输量可达150至180 Mbps，较2x2 MIMO系统平均多出50%的覆盖范围持续数据传输量。
讯号持续技术同时通过不同空间讯号路径进行传送，并且在接收器进行讯号处理时，同时合并来自三个接收器的资讯，因此大幅增加联机强度与数据传输量。若只是在额外的天线间切换较少的同时发射器，是无法达到这样的强度。Atheros将三组完整的射频发射链与接收链整合至单一芯片的作法，加上内建SST基频处理，以接近于强度较差而不具竞争力的2x2 MIMO方案之价格，实现无法匹敌的覆盖范围与强度。
Atheros AR5008芯片组为目前该公司性能最佳的无线局域网络解决方案。此系列产品使用802.11n规格草案所要求的所有技术组件，以及一些选用功能，为家庭或办公室带来影片、语音及数据传输三方面的无线网络终极体验。
●影片：采用讯号持续技术之XSPAN新一代的无线路由器与网关器，以其高达180 Mbps的真实世界数据传输量，轻易地在单一家庭网络提供多重高分辨率(HD)串流所需的数据传输量。
●语音：单天线无线电话手机与连接至Atheros架构存取点的传统装置，能应用Atheros的三发射器架构，改善覆盖范围与强度。Atheros SST增加整体传输能力与空间重复，可确保通话品质清晰的覆盖能力。
●资料：包括简单网络运算及传输大型数据、音乐或影像档案等数据应用，都能因为XSPAN产品提供的高带宽而增强性能。
无线与行动顾问公司Farpoint Group表示，IEEE 802.11n工作小组核准草案标准后，我们更清楚看出MIMO技术空前，甚至绝后的重要性。成功的MIMO产品将涵盖各种价格与应用范围，以目前成功的无线局域网络为基础，最终将铲除无线局域网络所有残余的障碍，成为所有人预设的网络联机方式。 Atheros AR5008系列的双芯片解决方案，架构于全球唯一的三射频芯片，搭配基频与媒体存取控制器(MAC)芯片。 Atheros也为客户提供无线存取点与路由器、CardBus和Mini Card转换器的完整参考设计。Atheros的技术以其高度灵活的架构，能以多种组态选项搭配，包括2x2、2x3与3x3，提供高达600 Mbps的实体数据速度并支持各种市场区隔与无线应用。
新推出的802.11n规格草案定义系列的技术组件，只有Atheros符合其要求而推出产品。
●2.4/5 GHz双频作业：业界专家一致认为2.4/5 GHz双频作业将会是802.11n装置的基础。Atheros自2002年即推出双频产品，并且在达成全球5 GHz带宽规范认证上，拥有独特的经验。
●40 MHz频道模式作业、封包汇集与封包挤压：2003年，Atheros以极成功的Super G与Super AG技术为基础，推出内含40 MHz频道模式作业、封包汇集与封包挤压的产品问新。
●传输波束成形与最高比结合(MRC)：Atheros自2004年起即开始推出第一代MIMO解决方案，功能包括传输波束成形、智能型天线与最高比结合(MRC)，并且以架构Atheros解决方案技术基础的终端产品，打下可观的MIMO市场占有率。
●领导整合： Atheros的整合领导地位不断受到认可。它是第一家推出单芯片802.11g装置与单芯片2.4/5 GHz双频装置的公司，最新的AR2133与AR5133，更率先将三组完整发射器与接收器整合于单一芯片。 |
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