Business Wire

Toshiba Electronic Devices & Storage to Unveil Low Voltage 5GHz Receiver for Next-Generation Wireless LAN

Del

Toshiba Electronic Devices & Storage Corporation (TDSC) today announced development of a low voltage 5GHz receiver for the next-generation IEEE802.11ax1 wireless LAN. The company reported details of the technology on September 14th at the European Solid-State Circuits Conference in Belgium.

This Smart News Release features multimedia. View the full release here: http://www.businesswire.com/news/home/20170915005376/en/

Fig. 1 : Variable linearity RFAMP (Graphic: Business Wire)

Fig. 1 : Variable linearity RFAMP (Graphic: Business Wire)

Continued growth in the Internet of Things requires high-speed communications in environments increasingly crowded with numerous wireless LAN devices. IEEE 802.11ax, the next-generation wireless LAN, will be four times faster than its predecessor, even in crowded environments. However, high speed digital signal processing with low power dissipation requires adoption of a faster CMOS devices, operating with supply voltages lower than 1.0V. Unlike digital circuits, the performance of CMOS analog circuits, such as RF2 CMOS receivers, degrades drastically as voltage falls. New circuit technology that can operate below 1.0V is required to overcome this problem.

TDSC has developed three new technologies for low voltage RF receivers.
The first is a variable linearity RF amplifier (RFAMP). Since signal amplitude is affected by power supply voltage, the linearity of RFAMPs decreases as voltage falls. Conventional RFAMP uses variable resistance to improve the linearity, but internal DC voltage and amplifier performance are also changed by adjusting the resistor value. In order to avoid these problems, Toshiba’s new RFAMP simultaneously employs two input paths: a high linearity path and an internal voltage adjustment path. The RFAMP can adjust linearity without any change in the internal DC voltage.

The second is a low noise frequency converter. A frequency converter switches a received RF signal into a low frequency signal to input into the analog to digital converter. Conventional frequency converters use a DC current source to improve the performance of conversion switches in low voltage designs, but this additional current source degrades performance with low frequency noise. Toshiba’s new frequency converter suppresses low frequency noise by moving the DC current source to the RF side of the conversion switches. Low frequency noise is up-converted to the RF frequency, which is separated from the desired low frequency signal. The result is sufficient switch performance without noise degradation.

The third is a current adder OPAMP. The OPAMP amplifies the converted low frequency signal to level a sufficient high to input the analog signal into the digital converter. Since the maximum output signal level is limited by the supply voltage, OPAMP is forced to reduce its operating voltage range. The new OPAMP suppresses the DC current source from the output stage with a high speed differential current mirror3, and provides larger output voltage even in a low voltage environment. .

Integrating these three technologies into a 5GHz wireless LAN receiver has allowed TDSC to secure the level of performance essential for next-generation wireless LAN.

TDSC will continue to develop the transceiver, and to contribute to the progress of high speed wireless communication.

Notes

[1]   IEEE 802.11ax operates at frequencies of 2.4 and 5 GHz. It will improve average throughput in environments with high terminal densities.
[2] RF: Radio Frequency.
[3] High speed differential current mirror: A high speed circuit designed to copy a current from inputs to outputs by the designated factor. A stacked MOSFET is used to improve speed in the circuit.
 

About Toshiba Electronic Devices & Storage Corporation
Toshiba Electronic Devices & Storage Corporation (TDSC) combines the vigor of a new company with the wisdom of experience. Since being spun off from Toshiba Corporation in July 2017, we have taken our place among the leading general devices companies, and offer our customers and business partners outstanding solutions in discrete semiconductors, system LSIs and HDD.

Our 19,000 employees around the world share a determination to maximize the value of our products, and emphasize close collaboration with customers to promote co-creation of value and new markets. We look forward to building on annual sales now surpassing 700-billion yen (US$6 billion) and to contributing to a better future for people everywhere.
Find out more about us at https://toshiba.semicon-storage.com/ap-en/company.html

Contact information

Press Contact:
Toshiba Electronic Devices & Storage Corporation
Motohiro Ajioka
Public Relations & Investor Relations Group
Business Plannning Division
Tel +81-3-3457-3576
Fax +81-3-5444-9339
motohiro1.ajioka@toshiba.co.jp

Om Business Wire

Business Wire
Business Wire
24 Martin Lane
EC4R 0DR London

+44 20 7626 1982http://www.businesswire.co.uk

Business Wire, a Berkshire Hathaway company, is the global leader in multiplatform press release distribution.

Følg saker fra Business Wire

Registrer deg med din epostadresse under for å få de nyeste sakene fra Business Wire på epost fortløpende. Du kan melde deg av når som helst.

Siste saker fra Business Wire

Logitech Delivers Record Sales, Up 22%23.1.2018 02:00Pressemelding

Logitech International (SIX: LOGN) (Nasdaq: LOGI) today announced financial results for the third quarter of Fiscal Year 2018. Q3 sales were an all-time record $812 million, up 22 percent in US dollars and 18 percent in constant currency, compared to Q3 of the prior year. Q3 GAAP operating income amounted to $100 million, compared to $96 million in the same quarter a year ago. Q3 GAAP earnings per share (EPS) amounted to $0.48, compared to $0.59 in the same quarter a year ago. GAAP profitability was impacted by a one-time $16 million net tax expense following the reduction in the U.S. federal income tax rate and other reforms. Q3 non-GAAP operating income grew 18 percent to $117 million, compared to $99 million in the same quarter a year ago. Q3 non-GAAP EPS grew 16 percent to $0.65, compared to $0.56 in the same quarter a year ago. Cash flow from operations grew 27 percent to $189 million, the highest quarterly level ever. “This holiday quarter, we’ve delivered our highest quarterly s

bitFlyer Launches in Europe and Becomes the World’s First Bitcoin Exchange to Be Regulated in Japan, the US and Europe23.1.2018 00:01Pressemelding

bitFlyer, the Tokyo-based operator of the world’s largest1 Bitcoin exchange, today announced its launch into Europe. Having been granted a Payment Institution (PI) license to operate in the European Union it has become the first Bitcoin exchange to be regulated in Japan, the US and Europe, making it the most compliant virtual currency exchange in the world. This press release features multimedia. View the full release here: http://www.businesswire.com/news/home/20180122006686/en/ bitFlyer CEO, Yuzo Kano, with Luxembourg Minister of Finance, Pierre Gramegna. (Photo: Business Wire) bitFlyer’s launch into Europe comes hot on the heels of explosive growth in Japan and launch in the US in 2017. With 25 percent2 of worldwide bitcoin exchange volumes being facilitated by bitFlyer and over $250bn in virtual currency traded on its platform in 2017, bitFlyer is the world’s largest Bitcoin exchange and the only one licensed in Europe that will allow users to trade with Japan, the world’s largest

Corsearch Names Diane Plaut as Global General Counsel and Head of HR22.1.2018 21:00Pressemelding

Corsearch, a trademark and domain solutions leader, is pleased to announce that Diane Plaut has joined the company as Global General Counsel and Head of HR, reporting to President and CEO Tobias Hartmann. This press release features multimedia. View the full release here: http://www.businesswire.com/news/home/20180122006527/en/ Diane Plaut, Global General Counsel and Head of HR, Corsearch (Photo: Business Wire) A long-time Corsearch Advisory Board member, client, and collaborator, Ms. Plaut brings to Corsearch over 25 years of experience in global intellectual property law, IP portfolio management, brand protection and enforcement, corporate law, privacy, and compliance. Ms. Plaut’s arrival comes as Corsearch begins a new chapter as an independent company, following its acquisition by Audax Private Equity earlier this month. “Diane is a born leader who is deeply knowledgeable about Corsearch products and services and the industry we serve,” said Mr. Hartmann. “Her passion for our compa

Bacardi to Acquire Patrón Tequila22.1.2018 20:28Pressemelding

Family-owned Bacardi Limited, the largest privately held spirits company in the world, announced today that it is expanding its portfolio of premium spirits with a definitive agreement to acquire 100% ownership of Patrón Spirits International AG and its PATRÓN® brand, the world’s top-selling ultra-premium tequila. The transaction, which is subject to customary closing conditions, follows the successful relationship the companies have had for nearly a decade since Bacardi’s initial acquisition of a significant minority stake in Patrón in 2008. The transaction reflects an enterprise value for Patrón of US$5.1 billion and is expected to close in the first half of 2018. This press release features multimedia. View the full release here: http://www.businesswire.com/news/home/20180122006459/en/ Bacardi agrees to acquire 100% ownership of Patrón Spirits International and its PATRÓN® brand, the world’s top-selling ultra-premium tequila. (Photo: Business Wire) According to the most recent IWSR

PMI’s Salary Survey Reveals that Project Management Practitioners with the PMP Certification Earn 23% More22.1.2018 16:58Pressemelding

Project Management Institute’s (PMI) Earning Power Report reveals a significant advantage in earning potential for PMP® certified practitioners. Survey respondents holding the Project Management Professional (PMP)® certification report higher median salaries than those without a PMP certification―23% higher on average across the 37 countries surveyed. This press release features multimedia. View the full release here: http://www.businesswire.com/news/home/20180122006262/en/ (Graphic: Business Wire) The Earning Power: Project Management Salary Survey is a comprehensive biennial salary survey that offers insight into the value of project management skills, experience and certifications. It is an industry-leading source of data, giving project management practitioners a greater awareness of their earning potential and helping employers, compensation committees, human resource departments and executive recruiters to better determine salary ranges. The 10th edition of the survey incorporate

ABB and City of Davos Pave the Way to Sustainable Mobility Through E-Vehicle Innovation22.1.2018 15:41Pressemelding

For this year’s annual World Economic Forum (January 23–26, 2018), the city of Davos and ABB have teamed up in a long-term partnership to provide e-infrastructure for public and private transportation. This press release features multimedia. View the full release here: http://www.businesswire.com/news/home/20180122006126/en/ ABB flash-charging station in Davos (Photo: Business Wire) Davos residents and WEF guests can experience the pioneering TOSA bus for themselves. The award-winning TOSA bus, developed by ABB in Switzerland, is already in use in Geneva and will soon be implemented in the French city of Nantes. It can recharge its battery in just 20 seconds as passengers board and disembark. In Davos, it will operate on the busy Line 1, running from the tourist center to the hospital. This is the first time TOSA technology is being used in an Alpine region. The idea is to run the system under extreme winter weather conditions; ABB and its project partners expect to gain valuable insig

I vårt presserom finner du alle våre siste saker, kontaktpersoner, bilder, dokumenter og annen relevant informasjon om oss.

Besøk vårt presserom