Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
PatentStorm News
Make the Most of PatentStorm
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest patents by subscribing to an RSS feed.
Got questions? Ask a Patent Expert!
Registered users: Manage your profile, comments and alerts.
US Patent 6114858 - System for measuring noise figure of a radio frequency device
US Patent Issued on September 5, 2000
Estimated Patent Expiration Date:
October 28, 2018Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
October 28, 2018Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractNoise factor of a radio-frequency device under test (DUT) is determined by driving the input of the DUT with a randomly modulated sine wave and measuring the power of a resulting DUT OUTPUT signal within each of a set of equally-sized frequency bands. The noise factor is computed as a combination of the power of the modulated sine wave within each of a plurality of frequency bands and the measured power of the DUT OUTPUT signal within that same plurality of frequency bands. | InventorAssigneeApplicationNo. 181940 filed on 10/28/1998US Classes:324/616, Gain or attenuation324/614Signal to noise ratio or noise figureField of Search324/613, Noise324/614, Signal to noise ratio or noise figure324/628, Circuit interference (e.g., crosstalk) measurement702/69, Signal quality (e.g., timing jitter, distortion, signal-to-noise ratio)702/65, Including related electrical parameter455/135, By signal quality (e.g., signal to noise ratio)455/226.3, Signal-to-noise ratio359/337Correction of deleterious effectsExaminersPrimary: Metjahic, SafetAssistant: Nguyen, Viet Q. Attorney, Agent or FirmUS Patent References4491783, Apparatus for measuring noise factor and available gainIssued on: 01/01/1985 Inventor: Sawayama , et al.4905308, Noise parameter determination method Issued on: 02/27/1990 Inventor: Davidson5191294, Measuring noise figure and y-factor Issued on: 03/02/1993 Inventor: Grace, et al.5970429Method and apparatus for measuring electrical noise in devices Issued on: 10/19/1999 Inventor: Martin International ClassG01S 007/40 |
