Edmonds' algorithm - Revision history

82.234.125.50: /* External links */

2015-01-03T16:00:49Z

External links

← Older revision		Revision as of 18:00, 3 January 2015
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	~~The '''power gain''' of an [[electrical network]]~~ is the ~~ratio of an output [[Power (physics)\|power]] to an input power~~. ~~Unlike other [[Signal (electronics)\|signal]] [[gain]]s, such as [[voltage]]~~ and ~~[[Electric current\|current]] gain, "power gain" may be ambiguous as the meaning of terms "input power" and "output power" is not always clear~~. ~~Three important power gains are~~ '~~''operating power gain''', '''transducer power gain''' and '''available power gain'''. Note that all these definitions of power gains employ the use of average (~~as ~~oppose of instantaneous) power quantities~~ and ~~therefore the term "average" is often suppressed, which can be confusing at occasions.~~		Hi there. My name is Sophia Meagher although it is not the title on my birth certification. My wife and I reside in Kentucky. Since I was 18 I've been working as a bookkeeper but quickly my wife and I will start our personal business. To climb is some thing I truly enjoy performing.<br><br>My site :: psychic readers ([http://c045.danah.co.kr/home/index.php?document_srl=1356970&mid=qna http://c045.danah.co.kr])

	~~==Operating power gain==~~

	~~The operating power gain of a [[two-port network]], G<sub>P</sub>, is defined as:~~

	~~:<math>G_P = \frac{P_\mathrm{load}}{P_\mathrm{input}}</math>~~

	~~where~~
	*P<sub>load</sub> is the maximum time averaged power delivered to the load, where the maximization is over the load impedance, i.e.~~, we desire the load impedance which maximizes the time averaged power delivered to the load.~~
	*P<sub>input</sub> is ~~the time averaged power entering the network~~

	~~If the time averaged input power depends on the load impedance, one must take the maximum of the ratio--not just the maximum of the numerator~~.

	~~==Transducer power gain==~~

	~~The transducer power gain of a two-port network, G~~<~~sub~~>T<~~/sub~~>~~, is defined as~~:

	~~<math>G_T = \frac{P_\mathrm{load}}{P_\mathrm{source,max}}</math>~~

	~~where~~
	*P<sub>load</sub> is the average power delivered to the load
	*P<sub>source,max</sub> is the maximum available average power at the source

	~~In terms of [[y-parameters]] this definition can be used to derive:~~

	:~~<math>G_T = \frac{4\|y_{21}\|^2 \Re{~~(~~Y_L)}\Re{(Y_S)}}{\|(y_{11}+Y_S)(y_{22}+Y_L)-y_{12}y_{21}\|^2}</math>~~

	~~where~~
	*Y<sub>L</sub> is the load admittance
	*Y<sub>S</sub> is the source admittance

	~~This result can be generalized to z, h, g and y-parameters as~~:

	~~:<math>G_T = \frac{4\|k_{21}\|^2 \Re{(M_L)}\Re{(M_S)}}{\|(k_{11}+M_S)(k_{22}+M_L)-k_{12}k_{21}\|^2}<~~/~~math>~~

	~~where~~
	*k<sub>xx</~~sub> is a z, h, g or y-parameter~~
	*M<sub>L</sub> is the load value in the corresponding parameter set
	*M<sub>S</sub> is the source value in the corresponding parameter set

	~~P<sub>source,max</sub> may only be obtained from the source when the load [[Electrical impedance\|impedance]] connected to it (i~~.e. ~~the equivalent [[input impedance]] of the two-port network) is the [[complex conjugate]] of the source impedance, a consequence of the [[maximum power theorem]]~~.

	~~==Available power gain==~~

	~~The available power gain of a two-port network, G<sub>A<~~/~~sub>, is defined as:~~

	~~<math>G_A = \frac{P_\mathrm{load,max}}{P_\mathrm{source,max}}<~~/~~math>~~

	~~where~~
	*P<sub>load,max</sub> is the maximum available average power at the load
	*P<sub>source,max</sub> is the maximum power available from the source

	~~Similarly P<sub>load,max</sub> may only be obtained when the load impedance is the complex conjugate of the [[output impedance]] of the network~~.

	==~~References==~~
	*[http://~~rfic~~.~~eecs~~.~~berkeley.edu/~niknejad/ee142_fa05lects/pdf/lect4~~.~~pdf Lecture notes on two-port power gain]~~

	~~{{DEFAULTSORT:Power Gain}}~~
	~~[[Category:Electrical parameters]]~~
	~~[[Category:Two-port networks]~~]

en>Dricherby: /* Running time */ missing space

2013-12-31T16:08:01Z

Running time: missing space

← Older revision		Revision as of 18:08, 31 December 2013
Line 1:		Line 1:
	~~Wilber Berryhill~~ is the ~~title his parents gave him~~ and ~~he totally digs that title~~. I'~~ve always loved living in Alaska~~. ~~Credit authorising~~ is ~~how she makes~~ a ~~residing~~. ~~What me and my family members adore~~ is ~~to climb but I'm considering~~ on ~~starting something new~~.<br><br>~~Also visit my weblog~~ - ~~telephone psychic~~ (~~[http:~~//~~alles-herunterladen.de~~/~~excellent~~-~~advice~~-~~for~~-~~picking~~-the-~~ideal-hobby~~/ http://~~alles-herunterladen~~.de/])		The '''power gain''' of an [[electrical network]] is the ratio of an output [[Power (physics)\|power]] to an input power. Unlike other [[Signal (electronics)\|signal]] [[gain]]s, such as [[voltage]] and [[Electric current\|current]] gain, "power gain" may be ambiguous as the meaning of terms "input power" and "output power" is not always clear. Three important power gains are '''operating power gain''', '''transducer power gain''' and '''available power gain'''. Note that all these definitions of power gains employ the use of average (as oppose of instantaneous) power quantities and therefore the term "average" is often suppressed, which can be confusing at occasions.

			==Operating power gain==

			The operating power gain of a [[two-port network]], G<sub>P</sub>, is defined as:

			:<math>G_P = \frac{P_\mathrm{load}}{P_\mathrm{input}}</math>

			where
			*P<sub>load</sub> is the maximum time averaged power delivered to the load, where the maximization is over the load impedance, i.e., we desire the load impedance which maximizes the time averaged power delivered to the load.
			*P<sub>input</sub> is the time averaged power entering the network

			If the time averaged input power depends on the load impedance, one must take the maximum of the ratio--not just the maximum of the numerator.

			==Transducer power gain==

			The transducer power gain of a two-port network, G<sub>T</sub>, is defined as:

			<math>G_T = \frac{P_\mathrm{load}}{P_\mathrm{source,max}}</math>

			where
			*P<sub>load</sub> is the average power delivered to the load
			*P<sub>source,max</sub> is the maximum available average power at the source

			In terms of [[y-parameters]] this definition can be used to derive:

			:<math>G_T = \frac{4\|y_{21}\|^2 \Re{(Y_L)}\Re{(Y_S)}}{\|(y_{11}+Y_S)(y_{22}+Y_L)-y_{12}y_{21}\|^2}</math>

			where
			*Y<sub>L</sub> is the load admittance
			*Y<sub>S</sub> is the source admittance

			This result can be generalized to z, h, g and y-parameters as:

			:<math>G_T = \frac{4\|k_{21}\|^2 \Re{(M_L)}\Re{(M_S)}}{\|(k_{11}+M_S)(k_{22}+M_L)-k_{12}k_{21}\|^2}</math>

			where
			*k<sub>xx</sub> is a z, h, g or y-parameter
			*M<sub>L</sub> is the load value in the corresponding parameter set
			*M<sub>S</sub> is the source value in the corresponding parameter set

			P<sub>source,max</sub> may only be obtained from the source when the load [[Electrical impedance\|impedance]] connected to it (i.e. the equivalent [[input impedance]] of the two-port network) is the [[complex conjugate]] of the source impedance, a consequence of the [[maximum power theorem]].

			==Available power gain==

			The available power gain of a two-port network, G<sub>A</sub>, is defined as:

			<math>G_A = \frac{P_\mathrm{load,max}}{P_\mathrm{source,max}}</math>

			where
			*P<sub>load,max</sub> is the maximum available average power at the load
			*P<sub>source,max</sub> is the maximum power available from the source

			Similarly P<sub>load,max</sub> may only be obtained when the load impedance is the complex conjugate of the [[output impedance]] of the network.

			==References==
			*[http://rfic.eecs.berkeley.edu/~niknejad/ee142_fa05lects/pdf/lect4.pdf Lecture notes on two-port power gain]

			{{DEFAULTSORT:Power Gain}}
			[[Category:Electrical parameters]]
			[[Category:Two-port networks]]

en>Mcld: improve intro

2012-05-18T22:37:56Z

improve intro

New page

Wilber Berryhill is the title his parents gave him and he totally digs that title. I've always loved living in Alaska. Credit authorising is how she makes a residing. What me and my family members adore is to climb but I'm considering on starting something new.<br><br>Also visit my weblog - telephone psychic ([http://alles-herunterladen.de/excellent-advice-for-picking-the-ideal-hobby/ http://alles-herunterladen.de/])