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15-547: [REDACTED] Look up ET  or et in Wiktionary, the free dictionary. ET or et may refer to: Arts, entertainment, and media [ edit ] E.T. the Extra-Terrestrial franchise [ edit ] E.T. the Extra-Terrestrial , a 1982 film E.T. the Extra-Terrestrial (video game) , a 1982 video game E.T. the Extra-Terrestrial (soundtrack) ,

30-462: A 2022 Indian film Music [ edit ] Electro Team , a eurodance band from Croatia "E.T." (song) , a 2011 song by Katy Perry from Teenage Dream "ET (Extra-Terrestrial)", a song by OutKast from ATLiens "E.T. Phone Home", a song by Jupiter 8 Featuring Kitty Woodson, co-authored by George Terry Publications [ edit ] Empire Times , an Australian student newspaper at Flinders University The Epoch Times ,

45-499: A chronic blood cancer Essential tremor , a neurological disorder characterized by shaking of hands and limbs Evapotranspiration , a sum of evaporation and plant transpiration Chemistry [ edit ] Electron transfer , the move of an electron from one atom or molecule to another Ethyl group , a functional group in organic chemistry Other uses in science and technology [ edit ] Electromagnetic testing Electron tomography Envelope tracking ,

60-659: A newspaper Economic Times (disambiguation) , several newspapers Codes [ edit ] ET, NYSE stock symbol for Energy Transfer Partners , American pipeline company et, the ISO 639 code for the Estonian language et, the ISO 3166-1 country code for Ethiopia .et , the country code top-level domain (ccTLD) for Ethiopia ET, IATA airline designator for Ethiopian Airlines Science and technology [ edit ] Biology and medicine [ edit ] ET tube , or endotracheal tube Essential thrombocythemia ,

75-639: A rating in the United States Navy Eastern Time Zone , a time zone in North America Et (Armenian letter) , a letter in the Armenian alphabet See also [ edit ] [REDACTED] Search for "et" on Misplaced Pages. Extraterrestrial (disambiguation) All pages with titles beginning with et All pages with titles beginning with ET All pages with titles containing ET Topics referred to by

90-407: A soundtrack score album by John Williams E.T. the Extra-Terrestrial (album) , an audiobook album by Michael Jackson and the original cast E.T. (character) , the titular alien from the film Other film and TV [ edit ] Eastern Television , a Taiwanese television network Entertainment Tonight , an American television entertainment news show Etharkkum Thunindhavan ,

105-521: A technique to provide a dynamic power supply to RF power amplifier Extraterrestrial life Köppen climate classification for tundra Space Shuttle external tank People [ edit ] Andrew Ettingshausen , rugby league footballer E Thi , Burmese fortune teller Eric Thomas (motivational speaker) Errol Thompson (audio engineer) , dub producer Other uses [ edit ] Ampersand punctuation mark (&), originally derived from Latin et Electronics Technician ,

120-495: Is different from Wikidata All article disambiguation pages All disambiguation pages ET">ET The requested page title contains unsupported characters : ">". Return to Main Page . Envelope tracking A conventional RF amplifier designed with a fixed supply voltage operates most efficiently only when operating in compression . Amplifiers operating with a constant supply voltage become less efficient as

135-587: The Samsung Galaxy Note 3 , Galaxy S5 Mini , Nexus 5 , and iPhone 6 . Other component makers evaluating the technology include R2 Semiconductor, Mediatek , RF Micro Devices , Skyworks , Texas Instruments , Analog Devices , Nujira and Eta Devices. Eta Devices, an MIT spinoff based in Cambridge, Massachusetts, is preparing a base station module and a chip that it claims decreases battery drain and work well in high-bandwidth applications. The company says

150-438: The crest factor of the signal increases, because the amplifier spends more time operating below peak power and, therefore, spends more time operating below its maximum efficiency. The need for greater efficiency arises particularly as modulation schemes become more complicated and their peak to average power ratio increases. Older modulation schemes based on phase or frequency modulation with no amplitude information carried on

165-551: The IQ modem and is passed to an envelope tracking power supply to provide the required voltage. In 2013, Qualcomm became the first company to ship a chip with such technology, which it claimed to be the industry’s first for 3G and 4G LTE mobile devices. R2 Semiconductor became the industry's first ET company to ship a phone with ET in the Samsung Galaxy S5 Mini . As of September 2014, at least 16 phones employ ET, including

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180-413: The chip helps lower electricity consumption by 20 percent and helps reduce heat generation by up to 30 percent. Eta's approach increases efficiency at the cost of greater signal noise. The company uses advanced digital signal processing to handle the problem. The Eta basestation is a little smaller than a shoebox, is the first 4G LTE transmitter to achieve average efficiency greater than 70 percent, up from

195-410: The peaks of the amplitude. The remainder of the time power is being dissipated unnecessarily. Thus signals with a high peak to average power ratio mean that low efficiency levels are achieved, with the excess energy being wasted, ultimately as heat. Envelope tracking adjusts the voltage applied to an RF power amplifier to deliver the power needed at that instant. Envelope information is derived from

210-401: The same term [REDACTED] This disambiguation page lists articles associated with the title ET . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=ET&oldid=1242174113 " Category : Disambiguation pages Hidden categories: Short description

225-441: The signal can use amplifiers that are driven into compression and offer high levels of efficiency. As of 2014 mobile communications basestations consumed ~1% of global electricity. In contrast, many new communications systems from WiMAX to LTE do use amplitude information. The amplifier cannot be run into compression, because the amplitude information becomes distorted. These amplifiers can only achieve their peak efficiency on

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