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SHANGHAI, China, Jan. 4, 2012 (GLOBE NEWSWIRE) -- RDA Microelectronics (Nasdaq:RDA) ("RDA Microelectronics" or the "Company"), a fabless semiconductor company that designs, develops and markets Radio Frequency (RF) and mixed-signal semiconductors for cellular, connectivity and broadcast applications, today announced sampling of its RDA6816 WCDMA power amplifier chip, one of the industry's first four transmit mode power amplifier modules. Sampling with China handset manufacturers began in December 2011.
Designed for WCDMA handheld equipment in the 824-849MHz band range, the RDA6816 is packaged in a small 3mm x 3mm form factor with pin mapping designed for compatibility with other vendors. The power amplifier provides four linear transmit power modes delivering up to 28.5dBm in high power, 18dBm in middle power and 8dBm in low power mode. In bypass mode the chip can achieve less than 10uA current consumption. A directional coupler is integrated for efficiently detecting the appropriate power mode.
The RDA6816 is also designed to work with GSM or EDGE front end modules integrating UMTS switch ports to offer customers a low-cost 3G RF front end solution. For example, the RDA6816 can support WCDMA Band V alongside quad-band GSM when coupled with the RDA6637, a new 5 mm x 5 mm GSM front end module with three UMTS ports.
Commenting on the product introduction, Vincent Tai, chairman and CEO of RDA Microelectronics, stated, "We are pleased to continue RDA's technology innovation with the introduction of one of the industry's first four mode power amplifiers. In addition to our existing TD-SCDMA offerings, this WCDMA product continues RDA's aggressive penetration of the growing 3G market in China. We have received very positive feedback from Chinese handset manufacturers regarding this newest member of our PA family. In the coming years, we believe we can achieve the same success with WCDMA products as we have with our GSM and GPRS PA products."
About RDA Microelectronics
RDA Microelectronics is a fabless semiconductor company that designs, develops and markets radio-frequency and mixed-signal semiconductors. The Company's product portfolio currently includes power amplifiers, transceivers and front-end modules, Bluetooth system-on-chip, Wi-Fi, Bluetooth and FM combo chips, FM radio receivers, set-top box tuners, analog mobile television receivers, CMMB mobile television receivers, walkie-talkie transceivers and LNB satellite down converters. For additional information, please see the Company's website at http://www.rdamicro.com. -
MANHASSET, NY -- Cree, Inc. has signed a nonexclusive worldwide license agreement with RFHIC Corp. that provides access to Cree’s pioneering Doherty amplifier-related patents.
“From our early work in maximizing the efficiency of silicon LDMOS amplifiers to our current initiatives using GaN-based devices, Cree has successfully developed innovative circuits that enhance the performance of the classic Doherty architecture,” said Jim Milligan, Cree, director of RF, in a statement.
Cree’s RF innovation and Doherty architecture can serve as the foundation for advanced 4G base stations that are substantially more efficient than conventional designs, according to the company.
The Doherty amplifier is a fundamental RF amplifier architecture that uses two parallel, equal power split transistors, a carrier amplifier transistor for low level signals and a peaking amplifier transistor for high level signals. Increased demand for higher-efficiency systems using digital modulation formats, such as those in 3G W-CDMA networks are suitable for online applications including video chat and streaming video in upcoming 4G LTE systems.
Conventional silicon LDMOS or GaAs transistors meet the efficiency and linearity requirements of upcoming 4G LTE base stations, and related wireless systems, that use high peak-to-average ratio signal modulation. Using Cree’s high-frequency, high-power GaN HEMTs and the latest generation digital pre-distortion systems, the resulting efficiency improvements can be 15 percentage points greater than that achieved by a conventional Doherty amplifier implemented with silicon LDMOS, according to Cree.
The nonexclusive license agreement with RFHIC (Suwon, South Korea) is intended to enhance the telecommunications infrastructure. Cree’s Doherty amplifier circuit patent license program is one of several.
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RFMD says its PowerSmart power platform and RF724x modules deliver unmatched performance in next-generation smartphones.
RF Micro Devices has commenced volume production of multiple 3G/4G power amplifiers (PAs) in support of two leading smartphone families.
The two most recent smartphones are supported by RFMD's PowerSmart power platform and the firm's RF724x family of ultra-high efficiency PAs.
The first smartphone, featuring RFMD's PowerSmart, is a stylish, all-touch handset featuring a brilliant 3.2" high resolution display, a 5MP camera with flash and video recording, and preinstalled social networking apps for a smoothly integrated mobile experience.

The second smartphone, featuring RFMD's RF7241, RF7242, RF7244, RF7245, and RF7258, is a powerful, full-featured smartphone with a high resolution touch display, a highly tactile keyboard, and a precise optical trackpad. The smartphone will be available in multiple triple-band 3G versions featuring RFMD's 3G/4G PAs exclusively. Both smartphones are manufactured by a leading North America-based smartphone manufacturer.
Eric Creviston, president of RFMD's Cellular Products Group (CPG), said, "RFMD's industry-leading 3G/4G products continue to gain design momentum with the world's leading smartphone manufacturers. Similar to calendar 2011, we believe RFMD will be a clear share gainer during calendar 2012, not only in UMTS/HSPA+, but also in 4G LTE."
RFMD claims its RF724x UMTS/HSPA+ PAs are ultra-high efficiency, single-mode 3G/4G components that reset the bar for performance in smartphones, tablets, and other high-performance data-centric connected devices.
The RF724x PAs deliver peak efficiencies of 48% - 51%. RFMD says this is significantly above current competitive offerings. The product family currently covers WCDMA bands 1, 2, 4, 5 and 8, addressing the most common UMTS/HSPA+ frequency bands and band combinations.
RFMD's PowerSmart power platform is a new product category reshaping the future of multimode, multi-band cellular RF architectures. PowerSmart features a revolutionary new RF Configurable Power Core that delivers multiband, multi-mode coverage of all cellular communications modulation schemes, including GSM/GPRS, EDGE, EDGE Evolution, CDMA, 3G (TD-SCDMA or WCDMA) and 4G (HSPA+, LTE or WiMAX). The RF Configurable Power Core in PowerSmart is compliant with all current and known future 4G data standards (HSPA+, LTE QPSK, LTE 16QAM, and LTE 64QAM).
In addition to the RF Configurable Power Core, which performs all power amplification and power management functionality the PowerSmart power platform includes all necessary switching and signal conditioning functionality in a compact reference design, providing smartphone manufacturers a single scalable source for the entire cellular front end.
RFMD offers a broad portfolio of 3G/4G solutions in single-mode and multimode converged and hybrid architectures to ensure compatibility with leading chipset providers and enable global platform manufacturing. RFMD's 3G/4G product portfolio reduces the thermal impact of data usage in smartphones while enabling increased battery life during data-based applications, such as web surfing, video calls and internet radio services.
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2011-11-27
抽刀断水
时间在以令人惊叹的速度飞逝。常常是回过头来一看,距上次xx已经一月有余,这段时间我都干了些什么啊?好像自己的日子在历史进程上丢失了一段,想不起来都发生了些什么。其实呢,事情是做了很多,甚至是根本就没有空闲的暇余,只不过改善的程度过小,没有看到飞跃的变化。那倘若说,我的生活淡如水,又远不是那么回事。总的来说,生活在继续,可是快乐的时候很少,很少。
人常说年少无知,说得好,某种程度上无知就是快乐的来源。因为无知,所以就无需费心,不费心那就不劳神,当然没有烦恼。上学的时候,烦心事似乎永远只是考试,成绩和升学,对于学生来说这些都是大山;但是对于我这样向来成绩不差的学生来说,并没有太多压力,这是实话。回想之前在学校里游刃有余的日子,真是美好,没有什么值得翻来覆去睡不着觉的。人渐渐长大离开只需要和纸笔打交道的象牙塔,烦恼的逐渐增多正是长大的标志。怪不得大家都说,不想长大。长大意味着需要思考更多,承担更多,多即是烦。
OK,停止无病呻吟,记录一下最近的生活。
来公司一年半有余了,个人能力提高甚多,起到的正面作用也日益增大。毕业之前,我常常憧憬着自己工作之后每天都一头扎进各种电路之中,不断地在各种HBT,pHEMT,CMOS管子之间穿梭,跑仿真,看曲线。然而,这是个非常特殊的团队,我从来没有想到我的职业生涯的开始阶段会是这样子的。一开始的时候负责撰写了不少专利申请,这个驾轻就熟,没什么难度;用啰里啰嗦、滴水不漏的语言描述本应该不那么刻板的电路和系统,折腾了几个月把那些闪光的想法都搬上了纸面,送到了审查员那里;专利方面的基本流程和规则算是很熟悉了,整个组的专利相关事宜都揽在我身上了,基本都是事务型工作。然后开始做一些简单产品的研发,画版图,这方面是我的短板,layout速度贼慢,不过好在老大给了不少指点,咱也刻苦努力,总算没有出大的差错,进步虽大但是进步空间依然巨大。基本上把Switch从头到尾学了一遍,做了一遍,尤其是在实验室调试SP9T产品的那段时间,从老大那里学了很多分析和解决问题的能力。很多都是从书本上不能学到的,越来越感受到我们这行真是个手艺活,动脑动手的能力都很重要。几轮tapeout和封装工程,不断发现bug解决bug,最终终于有第一款产品在我手里诞生。期间,也开始试着做产品推广,接触客户和市场,也去接触各类供应商,了解行业的发展状况;同时,又上手两个比较大的产品项目,基本电路都是伟大的天才同事们设计的,我负责把他们整合起来把它们变成产品;同时,开始开发一些未来平台技术,作为我们未来产品的基础架构。事情开始越来越多,而且大多数对我来说都是第一遭,没有经验,没有教训,开始摸爬滚打。有一些事情比较顺利,而有一些事情则进展缓慢困难重重,但最让人恼火的就是有些事情是峰回路转急转直下。尤其是两个新产品的开发,总是解决一个问题又冒出另外一个问题,搞得我催头丧气。项目进度被我一拖再拖,心里着急却总是昏招不断,好在老大们一直给予我教导和宽容;等着吧,这两个项目清掉之后一定要好好总结一下,希望往后大局观更好一些。新的平台技术的开发,也是很有挑战性的事情,因为涉及到的不仅仅是技术问题,更多的是和合作伙伴们的沟通与交流,各种事务的统筹安排,时不时要出差--体验了几次一天两个航班。回过头来看,我即将会被打造成一个杂食动物,用NB点的话说就是要上得厅堂下得厨房,要做能里能外的全面手。有一天和某同学聊天,他说道你做的东西挺杂的啊,都是你喜欢的吗?我仔细地考虑了一下这个问题,其实这么长时间来我的某些想法已经完全改变了,那就是:我不再会因为喜欢什么才去做什么,而应该是需要我做什么,我就去做什么。这不是冠冕堂皇的大话,像为人x民服务的公x仆那样搞笑;而是,这个团队就这么几杆枪,所有的事情都要有人去做,所以这些都是应该做的,不能有挑肥拣瘦的态度。况且,工作也是不断学习的过程,没有什么是一成不变的,厨师还要经常炒几道新菜呢。况且,全能型选手,多酷啊!总之,不怕能力弱,不怕出漏子,不断进步!
生活中最大变化,那就是即将身为人父,到现在婷儿已经是四个月身孕了。来的时候有点紧张,因为感觉我们还没有做好准备;不过很快就释然了,永远不会觉得准备好了的,既来之则安之。做会计师要频繁地出差,到各种项目去审计,索性就让婷辞职了,在家里好好休养。每个新生都是一个新的希望,有希望总是好的,令人期待!祝愿一切顺利。
另外一个变化,就是变身房奴。之前也一直在看房子,但不那么着急,看看而已。直到知道即将有小生命的到来,掐指一算时间已经很紧迫了,于是开始着手准备。虽然刚工作一年没有什么积蓄,但鉴于对未来的美好预期,一开始还是做了一个很高的预算,给自己点压力也不是什么坏事。就在我们兴冲冲准备选房的时候,银行给了我们当头一棒!说起来,这对我来说绝对是耻辱的污点:大学的时候向银行贷了助学贷款,当时本科毕业的时候做了展期,可是愚蠢的我居然认为是只要在最后还款日期钱还清即可,哪知道有两笔贷款的形式并不是一次结清而是需要每月还款的。于是,研究生这五年总是有时候想起来才去把多余的钱存到账户里还钱。于是,我的个人征信记录上,留下了一串串耻辱的逾期记录!这绝对是我这辈子干过的最愚蠢的事情,银行的合同上写得一清二楚,而我却根本就没有去看一眼,天真地自以为是。于是,老天在这个重要的时候给我一颗自种的恶果吃,非常苦涩!这种情况下,银行是不会再给我批住房贷款的,我恨不得生煎了自己。为了这件事情,我着实心情低落了很长时间,真是没脸见人了,对不起婷儿。过了一段时间,想着干脆贷公积金贷款,余下的钱想办法去借。降低了预算,又赶上开发商也有些优惠,爸爸妈妈还有岳父岳母和亲戚都倾其所能,算上公积金贷款,结果还是有一个很大的缺口。我是真的没有办法了,这个念头,非亲非故的人谁会借给你这么大一笔钱呢?我开始觉得,想我这样丧失信誉的人,想买房子本身就是一个可耻的贪婪梦想。可是,天无绝人之路,我的生命中还是遇上了这样一位贵人,毫不吝啬地拉了我一把。我从未奢望过,但是就这样发生了;着实让我感动,雪中送炭大抵就是这个意思。取得他人的信任,是非常困难的,尤其是像我这样有污点的家伙,所以,我从心底百般感激这位师长。士为知己者死,我不会是口上说说而已,定当知恩图报。关于个人征信,我觉得这样一个政策确实是正确有效的;想想,这辈子我还敢再胡来一次吗?长此以往,诚信基础必将建立。可惜,可耻,不可怜,谨以此教训自己。
除了房子的苦恼,实际上还有更多让人烦恼和伤心的事情。子欲养而亲不待,也是人间一大痛苦。妈妈的身体向来羸弱,而这几年更是每况愈下,高血压、糖尿病引发一系列的并发症,每天都在遭受病痛的煎熬。这几天检查身体发现,糖尿病引发了肾功能问题,这消息一下子就把我给打懵了。钱,我们可以想办法;可是,健康并不是钱一定能换回来的。大学之后,我就开始在外闯荡,在爸妈身边的日子越来越少,当他们越来越需要子女照顾的时候,我却不能在他们身边。我们都应该更加关心父母,让他们能够安度晚年。并且,无论工作多忙多累,还是应该坚持适度体育锻炼,保持健康的体魄,无论对谁都是非常重要的。
还有,最近发现自己越来越懒惰了。好久没有去健身房,好久没有去上课,答应别人做的事情也一拖再拖。有些时候是确实太累了,工作上诸多头绪整得我焦头烂额,更多的时候为了这些生活中的烦恼而心情低落,做什么都提不起兴致来。
我祈求有更宽广的胸怀,安宁的内心,钢印般的执行力和意志,也祈求上天再给我一些好运吧,我是个不错的家伙。
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2011-10-16
Timeline of Steve Jobs















