Stream video on your smartphone, or use its GPS for an hour or two, and you'll probably see the battery drain significantly. As data rates climb and smartphones adopt more power-hungry features, battery life has become a ...
Electronics & Semiconductors
Oct 28, 2014
3
0
(Phys.org)—Technologists generally agree that power amplifiers have proven to be inefficient pieces of hardware. Turning electricity into radio signals, they eat into the battery life of smartphones and they waste power. ...
(PhysOrg.com) -- If a plan to build new 4G mobile phone base stations in the US goes ahead, engineers say GPS satellite navigation systems will be seriously jammed and huge areas of the country will become GPS dead zones.
Construction and testing are complete on the CADRE rovers, which will map the lunar surface together as a tech demo to show the promise of multi-robot missions.
Space Exploration
Mar 7, 2024
0
72
Researchers have designed and demonstrated two all-silicon terahertz metasurface devices that can be used to create four optical channels for simultaneously implementing different optical functions. This capability could ...
Optics & Photonics
Mar 1, 2023
0
90
If a base station in a local area network tries to use a directional beam to transmit a signal to a user trying to connect to the network—instead of using a wide area network broadcast, as base stations commonly do—how ...
Optics & Photonics
Apr 27, 2021
0
199
SpaceX's four astronauts had barely settled into orbit last Friday when they were ordered back into their spacesuits because of a potential collision with orbiting junk.
Space Exploration
Apr 26, 2021
2
309
5G, or the fifth-generation technology standard for broadband cellular networks, is touted as having finally arrived for ultrafast download speeds, an end to dropped calls and buffering, and greater connectivity to advance ...
General Physics
Mar 23, 2021
0
24
Mission controllers at NASA's Jet Propulsion Laboratory in Southern California have received the first status report from the Ingenuity Mars Helicopter, which landed Feb. 18, 2021, at Jezero Crater attached to the belly of ...
Space Exploration
Feb 21, 2021
6
9066
On the afternoon of April 15, 2015, an earthquake rocked the Himalayas, causing widespread death and damage across Nepal, India and Tibet. The magnitude 7.8 quake—the strongest ever recorded in the region—rattled glaciers ...
Earth Sciences
Jan 29, 2021
1
95
