Paleothermometer - Revision history

en>Monkbot: /* Mg/Ca and Sr/Ca */Task 2: Fix CS1 deprecated coauthor parameter errors

2014-07-21T02:33:41Z

Mg/Ca and Sr/Ca: Task 2: Fix CS1 deprecated coauthor parameter errors

← Older revision		Revision as of 04:33, 21 July 2014
Line 1:		Line 1:
	~~{{move portions from\|Antenna effective length\|date=July 2013}}~~		Ed is what people call me and my wife doesn't like it at all. Since I was eighteen I've been operating as a bookkeeper but soon my spouse and I will begin our personal business. For years he's been residing in Alaska and he doesn't plan on altering it. She is really fond of caving but she doesn't have the time lately.<br><br>Here is my page - [http://isaworld.pe.kr/?document_srl=392088 live psychic reading]
	~~{{Antennas\|Characteristics}}~~

	~~In [[telecommunications]], the '~~''~~antenna factor''' is defined~~ as ~~the [[ratio]] of the incident [[electromagnetic field]] strength to the [[voltage]] ''V'' (units: V or µV) on the line connection of an [[antenna (radio)\|antenna]]~~.

	For ~~an electric field antenna, the field strength is in units of V/m or µV/m and the resulting antenna factor~~ '~~'AF'' is in units of 1/m:~~

	~~: <math>AF = \frac EV</math>~~

	~~If all quantities are expressed logarithmically in [[decibel]]~~s ~~instead of [[SI unit]]s, the above equation becomes~~

	~~: <math>~~
	~~AF_{\mathrm{dBm}^{-1}} =~~
	~~E_\mathrm{\mathrm{dBV/m}} - V_{\mathrm{dBV}} =~~
	~~E_\mathrm{\mathrm{dB}\mu\mathrm{V/m}} - V_{\mathrm{dB}\mu\mathrm{V}}~~
	~~</math>~~

	~~For a magnetic field antenna, the field strength is~~ in ~~units of A/m~~ and ~~the resulting antenna factor~~ is ~~in units of A/(Vm). For the relationship between the electric and magnetic fields, see the [[impedance~~ of ~~free space]].~~

	~~In a 50 Ω system, the antenna factor is related to the [[antenna gain]]~~ '~~'G'' and~~ the ~~wavelength λ via:~~

	~~: <math>~~
	~~AF = \frac{9.73}{\lambda \sqrt{G} }~~
	~~</math>~~

	The variable G means antenna gain (dimensionless) and it can be written in terms of effective aperture A to obtain the final expression considering the [[impedance of free space]] (376.7Ω) and the load as 50Ω.
	~~The antenna effective aperture can be written as A = (λ~~<~~sup~~>2<~~/sup~~>~~G)/4π.~~

	~~==References==~~
	* [http://~~www~~.~~tdkrfsolutions~~.~~com~~/~~DataPDFs/antenna_paper_part3.pdf Interpreting Antenna Performance Parameters for EMC Applications]~~
	* [http://www.djmelectronics.com/articles/emc-antenna-parameters-p3.html Interpreting Antenna Performance Parameters for EMC Applications]{{Dead link\|date=~~July 2010}} An excellent page with summaries of all the relevant equations~~
	* [http://www.antenna-theory.com/definitions/antennafactor.php Antenna Theory]


	~~[[Category:Antennas (radio)]~~]

en>Monkbot: /* Mg/Ca and Sr/Ca */Fix CS1 deprecated date parameter errors

2014-01-28T03:18:27Z

Mg/Ca and Sr/Ca: Fix CS1 deprecated date parameter errors

← Older revision		Revision as of 05:18, 28 January 2014
Line 1:		Line 1:
	~~I would like to introduce myself to you~~, ~~I am Jayson Simcox but I don~~'~~t like when people use my complete title. He~~ is an ~~information officer~~. ~~What me~~ and ~~my family adore~~ is ~~doing ballet but I've been taking on new things lately. Mississippi~~ is ~~exactly where his house~~ is.<br><br>~~Here is my webpage: real psychic~~ ([http://~~bigpolis~~.com/~~blogs~~/~~post~~/~~6503 mouse click~~ the ~~next web page~~])		{{move portions from\|Antenna effective length\|date=July 2013}}
			{{Antennas\|Characteristics}}

			In [[telecommunications]], the '''antenna factor''' is defined as the [[ratio]] of the incident [[electromagnetic field]] strength to the [[voltage]] ''V'' (units: V or µV) on the line connection of an [[antenna (radio)\|antenna]].

			For an electric field antenna, the field strength is in units of V/m or µV/m and the resulting antenna factor ''AF'' is in units of 1/m:

			: <math>AF = \frac EV</math>

			If all quantities are expressed logarithmically in [[decibel]]s instead of [[SI unit]]s, the above equation becomes

			: <math>
			AF_{\mathrm{dBm}^{-1}} =
			E_\mathrm{\mathrm{dBV/m}} - V_{\mathrm{dBV}} =
			E_\mathrm{\mathrm{dB}\mu\mathrm{V/m}} - V_{\mathrm{dB}\mu\mathrm{V}}
			</math>

			For a magnetic field antenna, the field strength is in units of A/m and the resulting antenna factor is in units of A/(Vm). For the relationship between the electric and magnetic fields, see the [[impedance of free space]].

			In a 50 Ω system, the antenna factor is related to the [[antenna gain]] ''G'' and the wavelength λ via:

			: <math>
			AF = \frac{9.73}{\lambda \sqrt{G} }
			</math>

			The variable G means antenna gain (dimensionless) and it can be written in terms of effective aperture A to obtain the final expression considering the [[impedance of free space]] (376.7Ω) and the load as 50Ω.
			The antenna effective aperture can be written as A = (λ<sup>2</sup>G)/4π.

			==References==
			* [http://www.tdkrfsolutions.com/DataPDFs/antenna_paper_part3.pdf Interpreting Antenna Performance Parameters for EMC Applications]
			* [http://www.djmelectronics.com/articles/emc-antenna-parameters-p3.html Interpreting Antenna Performance Parameters for EMC Applications]{{Dead link\|date=July 2010}} An excellent page with summaries of all the relevant equations
			* [http://www.antenna-theory.com/definitions/antennafactor.php Antenna Theory]


			[[Category:Antennas (radio)]]

en>Bibcode Bot: Adding 0 arxiv eprint(s), 1 bibcode(s) and 0 doi(s). Did it miss something? Report bugs, errors, and suggestions at User talk:Bibcode Bot

2012-08-21T16:32:02Z

Adding 0 arxiv eprint(s), 1 bibcode(s) and 0 doi(s). Did it miss something? Report bugs, errors, and suggestions at User talk:Bibcode Bot

New page

I would like to introduce myself to you, I am Jayson Simcox but I don't like when people use my complete title. He is an information officer. What me and my family adore is doing ballet but I've been taking on new things lately. Mississippi is exactly where his house is.<br><br>Here is my webpage: real psychic ([http://bigpolis.com/blogs/post/6503 mouse click the next web page])