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From: compoundsemiconductor.net Wednesday 2 September 2009: Angel Business Communications Limited (Coventry/Watford, UK) has acquired Compound Semiconductor magazine and its associated website compoundsemiconductor.net from IOP Publishing (Bristol, UK). Financial details of the transaction were not disclosed. "The deal is a win-win for Compound Semiconductor readers and advertisers, as well as for Angel and ourselves," explained Michael Bray, finance director at IOP Publishing. "With a new p...

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为了让ADS仿真更快一点，要用64-bit仿真器，并且添置了4G内存，所以我的电脑装了Windows XP 64-bit。从此出现了很多烦恼，不少软件不能兼容。最万恶的就是微软的MSN了，8.5版本之后就不再支持XP-64，同时也不让继续使用旧版本，真是变态。好不容易在网上找到解决办法装了8.5，一直用到今天又不让用了，说是必须用最新版，可是，最新版不支持XP-64，这不是坑人吗？ 真搞不懂微软在搞什么，明明MSN Live 9是可以在XP-64上运行的，为什么要限制安装呢？省去口诛笔伐，直接讲解决办法，来自网络高手那里。 1. 下载破解及安装包：

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作者：肖跃龙  Innoveda北京办事处 简介 近年来，高速设计领域一个越来越重要也是越来越为设计工程师所关注议题就是受控阻抗的电路板设计以及电路板上互联线的特征阻抗。然而，对于非电子的设计工程师来说，这也是一个最容易混淆也最不直观的问题。甚至很多的电子设计工程师对此也同样感到困惑。这篇资料将对特征阻抗作一个简要而直观的介绍，希望帮助大家了解传输线最基本的品质。  什么是传输线？ 什么是传输线？两个具有一定长度的导体就构成传输线。其中的一个导体成为信号传播的通道，而另外的一个导体则构成信号的返回...

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  图片链接：http://www.cas.cn/10000/10003/10000/10000/2009/137794.htm 嘿嘿，点，点，点，点上面的图片，你就会明白我的意思。 *** 今天是我的生日。上周在家里已经提前“庆祝”过，今天准备再大庆一番，找地方吃碗刀削面吧！

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From compoundsemiconductor.net You will no doubt have read that IOP Publishing, the current owner of Compound Semiconductor magazine and its associated website compoundsemiconductor.net, has ceased publication of the title.  Following on from that announcement, we are pleased to inform Compound Semiconductor readers and advertisers that talks are now progressing regarding the sale of the magazine and the website to another publisher with an established business serving the global semico...

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很惊讶，居然没有欣喜若狂，我和蛋蛋很冷静的样子。而别的人，老板，金老师，各位师兄师姐师弟师妹们，已经替我们高兴得要发狂了。终于，所有希冀得以实现，所有汗水得起所值，所有人振奋起来。我现在可以非常平静地，记录下这个对我来说意义非凡的日子：2009年8月4日，我和蛋蛋设计的第一款GaAs HBT超高速数模混合电路，10GHz直接数字频率综合器（DDS），正常工作了！ 喜事，得从昨天的测试开始。经历了前面两周的烦躁不安和无休止等待，这周我们终于胜利占领测试间。按照我们的既定方针，先从容易的入手，所以就先测了泰哥的VCO。测试之...

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这周借来两台超牛的示波器，一台是Agilent DSA91304A Infiniium高性能示波器，13GHz带宽，40GSa/s采样率；另外一台式LeCory WaveMaster 8 Zi示波器，16GHz带宽，40GSa/s采样率。   这两个示波器都是神物啊，之前从来没有见过。本来...

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此篇文章为《10G速率DDS设计成功！》的转发，原文章地址为：http://uniqwu.blogbus.com/logs/43710773.html 原文摘要：       去年下半年开始正式着手做这个事情，当时项目组就师兄一个人，我也刚完成成都那边的任务回来了，我对这块挺感兴趣于是跟导师申请加入了项目组，于是正式的 DDS设计工作就开始了。师兄是很牛的一人，技术方面不用说了，当年在科大搞机器人竞赛就已经是大牛了，关键是能很好的与人交流，不论什么人都能与他关系处的很好，做事非常稳重，这些都是我需要努力学习的。   &nbs...

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From: Compoundsecmiconductor.net IOP Publishing, the owner of Compound Semiconductor magazine and the compoundsemiconductor.net web site, has ceased publication of the title. Over recent months, IOP Publishing has undertaken a strategic review of its priorities as a learned-society publisher of leading journals, magazines, websites and electronic services. As a result of that review, the company has decided to focus on its core activity of learned journals, which have grown more than fourfold si...

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I was a little surprised by this report that has Skyworks surpassing RFMD in market share but Strategy Analytics announced that Skyworks has managed to gain the number one position for cellphone PAs according to their research. The rapid growth of handsets has pushed the PA market to $2 billion per year with Skyworks and RFMD relying on the majority of their revenues from this market despite diversification efforts. Both firms and their competitors have invested heavily in new PA products and te...

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锐迪科微电子(RDA)日前宣布，其应用于地面数字电视接收的高性能射频接收芯片量产，这也是在该领域国内首颗成功上市的芯片，标志着国外芯片垄断国内市场的历史从此改写。该芯片型号为RDA5880，采用CMOS工艺，QFN32 5*5封装，片外器件极少，具备高集成度的特点，支持自动增益控制模式，能够支持目前所有的数字电视广播传输标准(包括 DVB-T、DVB-C、ATSC、DMB-T/H、CMMB等)以及模拟电视标准，支持多波段band III 174M-240M, VHF band 470M-870M。 RDA5808的量产令锐迪科的产品线更加丰富。此前，锐迪科已经成功推出了多款FM、Bluetooth...

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Korean vendor says it favors performance and reliability provided by SiC substrates over silicon for GaN wireless components.RFHIC says that GaN-on-SiC devices can be competitive with products manufactured on silicon wafers, thanks to economies of scale offered by its strategic partner Cree. “Although GaN-on-SiC is not the cheapest GaN solution, Cree makes it a viable alternative even compared to the most cut-throat LDMOS,” said Kevin Kim, senior international sales manager at RFHIC. Cr...

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RFMD® develops and manufactures unmatched compound semiconductor technologies and is now offering foundry services for our industry-leading 0.5μm GaN on SiC process. RFMD’s world-class manufacturing scale, supported by the largest III-V factory in the world, enables best-in-class cycle times backed by our on-time shipment pledge. RFMD’s track record as a high-volume, reliable supplier has earned us “preferred partner” status with the industry’s top OEMs while our extraordinary level of cu...

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