Ultra-Wideband GaN Doherty PA for Next Gen Wireless Base Stations

first_imgMitsubishi has developed an ultra-wideband gallium nitride (GaN) Doherty power amplifier for next generation base stations that operate from 3 to 3.6 GHz (600 MHz Bandwidth). The technology is expected to help reduce the size and energy consumption of next generation wireless base stations. Technical details will be presented at the IEEE Topical Conference on RF/Microwave Power Amplifiers for Wireless and Radio Applications (PAWR2017) during the Radio & Wireless Week (RWW) in the U.S. city of Phoenix, Arizona from January 15-18, 2017.To help meet a rapid rise in demand for increasing wireless capacity, mobile technologies are shifting to next generation systems that raise capacity by allocating new frequency bands above 3 GHz and using multiple frequency bands. Generally, power amplifiers operate with less efficiency at higher frequencies. Also, different power amplifiers are needed for different frequency bands, which can require larger base stations. As such, extra-efficient power amplifiers compatible with multiple frequencies are in demand.This new ultra-wideband GaN Doherty power amplifier from Mitsubishi Electric uses advanced frequency-compensation circuits with Doherty architecture for enhanced efficiency in a very wide band range.The new power amplifier’s frequency-compensation circuit enhances efficiency over a wide frequency range to enable wider performance by three times, a world record for Doherty power amplifiers (with a 600 MHz bandwidth). Wideband, high-efficiency performance for efficient amplification of multiple radio frequencies by just one power amplifier will help to reduce base station size and cooling needs. Mitsubishi Electric’s high-efficiency GaN devices (MGFS39G38L2) have an efficiency of more than 45.9% in the 3.0 to 3.6 GHz frequency range, thereby reducing energy consumption. Further, an adjacent channel leakage ratio (ACLR) of -50 dBc is achieved with a commercial digital pre-distortion (DPD) technique for LTE (Long-Term Evolution) 20 MHz signals.last_img read more

A.J. Turman emerging as tailback to watch for Georgia

first_imgATHENS, Ga. (AP) — A.J. Turman, who has never played in a regular-season game for Georgia, is emerging as a tailback to watch in 2015.Turman, a third-year sophomore, led the Bulldogs in rushing Saturday for the second straight scrimmage. He ran for 140 yards and two touchdowns to gain momentum for next week’s spring game.With Todd Gurley preparing for the NFL draft, Nick Chubb being closely monitored and Keith Marshall and Sony Michel out with injuries, Turman has benefited from an increased workload this spring.Turman missed last season with a right foot injury that required surgery. He was redshirted in 2013.”Last year was really hard, I’m not going to lie,” Turman said this week. “It was probably my hardest year.”I’m ready to bounce back and get on the field now.”Chubb, the Southeastern Conference’s freshman of the year last season, will be Georgia’s lead tailback this year. Turman could be moving up the depth chart.Chubb has little to prove this spring after rushing for 1,547 yards and 14 touchdowns. He had only three carries for 10 yards and a touchdown in Saturday’s scrimmage.Marshall and Michel have been hampered by injuries.”I get more reps. It gives me more of a chance to play,” Turman said.Marshall ran for 759 yards and eight touchdowns as a freshman in 2012. He had a slow return from a season-ending knee injury against Tennessee in 2013. He played in only three games last season, but looked strong at the start of spring before his hamstring injury.Michel set a career high with 155 yards rushing against Troy last year before missing five games with shoulder and ankle injuries. Coach Mark Richt has said Michel likely will miss the remainder of spring with another shoulder injury.The 6-foot, 215-pound Turman was a four-star prospect out of Orlando, Florida. He said he never considered transferring when he appeared lost on the depth chart behind so many tailbacks.”No, I think competition makes everybody better,” he said.”I picture myself fitting in real good. We’re all powerful running backs and that’s what Georgia produces, hard runners. I feel like I fit in perfectly.”Brendan Douglas also had a busy day at tailback with 22 carries for 90 yards and a touchdown.Faton Bauta and Brice Ramsey received most of the work in the competition for the starting job at quarterback. Bauta completed 16 of 28 passes for 250 yards with two touchdowns and an interception. Ramsey, the top backup to 2014 senior Hutson Mason, completed 17 of 28 passes for 219 yards and one touchdown.”As it went, Faton was a little hotter on the front end, and Brice was a little hotter at the tail end of the scrimmage,” Richt said. “They’re getting there. They really are. We’re learning a lot. Of course, the better you protect, the easier it is to prove that you know your progressions and you can get to your second and third guy.”Jacob Park completed 2 of 8 passes for 36 yards.Linebacker Jake Ganus, who transferred to Georgia after Alabama-Birmingham shut down its program, led the defense with nine tackles.last_img read more

Beverly Hospital receives award for excellence

first_imgHealthGrades analyzed 5,000 hospitals across the nation from 2003 to 2005, officials said. “Quality patient care is our top priority,” said Cary V. Kiff, president and CEO of Beverly Hospital. “Our physicians, nurses and staff work hard at Beverly Hospital to achieve the highest quality of care possible for our patients.” According to HealthGrades, patients who are treated at a hospital that receives the award are 28 percent less likely to die under care and 5 percent less likely to endure any major complications. As a result of the HealthGrades study, Beverly Hospital was also rated as among the top 10 percent in the nation for pulmonary, maternity and gastrointestinal services, hospital officials said. “It’s a big accomplishment,” said Corali Nakamatsu, supervisor of women’s services at Beverly. “We have had some previous recognition in the past, but it’s never been in the top 10 percent.” MONTEBELLO – Beverly Hospital has been awarded a 2007 Distinguished Hospital Award for Clinical Excellence by HealthGrades for being among the nation’s best hospitals, officials have announced. Beverly Hospital was among only 266 non-federal hospitals in the United States to receive the award, officials said. “I think it’s significant to everyone, because hard work has earned this,” said Alice Cheng, spokeswoman for Beverly Hospital. “Even though we are a smaller community hospital, our staff is comparable to the other national facilities.” HealthGrades, a leading independent health care company that releases studies on the nation’s hospitals, examined complication and mortality rates. [email protected] (562) 698-0955, Ext. 3911 160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set!last_img read more