A new highly efficient power amplifier for electronics could help make possible next-generation cell phones, low-cost collision-avoidance radar for cars and lightweight microsatellites for communications.
Fifth-generation, or 5G, mobile devices expected around 2019 will require improved power amplifiers operating at very high frequencies. The new phones will be designed to download and transmit data and videos faster than today’s phones, provide better coverage, consume less power and meet the needs of an emerging “Internet of things” in which everyday objects have network connectivity, allowing them to send and receive data.
Power amplifiers are needed to transmit signals. Because today’s cell phone amplifiers are made of gallium arsenide, they cannot be integrated into the phone’s silicon-based technology, called complementary metal-oxide-semiconductor (CMOS). The new amplifier design is CMOS-based, meaning it could allow researchers to integrate the power amplifier with the phone’s electronic chip, reducing manufacturing costs and power consumption while boosting performance.
“Silicon is much less expensive than gallium arsenide, more reliable and has a longer lifespan, and if you have everything on one chip it’s also easier to test and maintain,” said Saeed Mohammadi, an associate professor of electrical and computer engineering at Purdue University. “We have developed the highest efficiency CMOS power amplifier in the frequency range needed for 5G cell phones and next-generation radars.”
Findings are detailed in two papers, one to be presented during the IEEE International Microwave Symposium on May 24 in San Francisco, authored by former doctoral student Sultan R. Helmi, who has graduated, and Mohammadi. They authored another paper with former doctoral student Jing-Hwa Chen to appear in a future issue of the journal IEEE Transactions on Microwave Theory and Techniques.
The amplifier achieves an efficiency of 40 percent, which is comparable to amplifiers made of gallium arsenide.
The researchers created the new type of amplifier using a high-performance type of CMOS technology called silicon on insulator (SOI). The new amplifier design has several silicon transistors stacked together and reduces the number of metal interconnections normally needed between transistors, reducing “parasitic capacitance,” which hinders performance and can lead to damage to electronic circuits.
“We have merged transistors so we are using less metallization around the device, and that way we have reduced the capacitance and can achieve higher efficiencies,” Mohammadi said. “We are trying to eliminate metallization between transistors.”
The new amplifiers could bring low-cost collision-avoidance radars for cars and electronics for lightweight communications microsatellites.
The CMOS amplifiers could allow researchers to design microsatellites that are one-hundredth the weight of today’s technology.
Three U.S. patents related to the amplifier have been issued. The research was funded partially by the U.S. Defense Advanced Research Projects Agency.
The researchers are working on a new version of the amplifier that is twice as powerful. Further work will be needed to integrate the amplifier into a cell phone chip.
The Latest on: CMOS technology
via Google News
The Latest on: CMOS technology
- Insights & Forecast with Potential Impact of COVID-19 - Global Automotive Camera Module Market 2020-2024 | Increased Popularity of CMOS Sensors to Boost Market Growth | Technavioon June 26, 2020 at 7:30 am
Technavio has announced its latest market research report titled Global Automotive Camera Module Market 2020-2024 (Graphic: Business Wire) LONDON-- ( BUSINESS WIRE )--The global automotive camera ...
- 7 sins of startup marketingon June 26, 2020 at 1:11 am
When trying to help a new company get off the ground, there are a few cardinal mistakes that will thwart later growth. Consider these tips. Tens of thousands of startups are born each year. Some grow ...
- Workfront Leap 2020 - will Chief Work Officers take their place alongside CIOs and CMOs? Customers share their remote collaboration storieson June 25, 2020 at 12:10 pm
Are we ready for Chief Work Officers? And what is the criteria to earn such a title? As Workfront Leap 2020 kicked off, I looked into those questions. A customer story from CenturyLink brought the art ...
- AFD study on CMOs to assist copyright commissionon June 24, 2020 at 7:15 pm
The final report of the ongoing study on Collective Management Organisations (CMOs) in Nigeria, which is being carried out by the Agence Française de Développement (AFD) in partnership ...
- CMOs must champion the right technology solutions in order to achieve positive CXon June 24, 2020 at 5:19 pm
Thus, removing barriers to delivering on-demand, customised experiences. A modern CMOs role is to innovate across the technology spectrum – they should have an understanding of what developments are ...
- AFD study on CMOs will assist NCC, says Aseinon June 23, 2020 at 8:36 pm
The Nigerian Copyright Commission (NCC) is bracing up to overhaul the regulatory framework for collective management of copyright to ensure transparency ...
- CEA-Leti scientists demonstrate CMOS device fabrication at 500° Con June 22, 2020 at 12:05 pm
In a fully depleted silicon on insulator (FDSOI) complementary metal-oxide-semiconductor (CMOS) processing breakthrough, CEA-Leti scientists have pushed fabrication thermal-process boundaries down to ...
- A First in Navy as Couple Serve as CMOs of Southern and Eastern Naval Commandson June 22, 2020 at 11:12 am
Defence sources said this is the first time in the history of the Indian Navy both husband and wife will be serving together as Chief Medical Officers of two commands.
- Leti makes CMOS at 500°C for 3D sequential chipson June 22, 2020 at 8:27 am
Leti scientists have made FDSOI CMOS at 500°C, "while showing strong performance gains especially in p-type MOS logic devices", according to the French ...
- Technology Agencies Cut PR Costs Through Newswire's Value Pack Guided Touron June 22, 2020 at 7:25 am
Newswire provides a powerful platform at a fraction of the cost of competing providers, making it simple for marketing teams to increase brand awareness and generate traffic during this wave of ...
via Bing News