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Amplifier Design in Software
Amplifier Design Generate UPCA In None Using Barcode generator for Software Control to generate, create UPCA Supplement 2 image in Software applications. UPC Symbol Scanner In None Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications. Three
UPC A Drawer In Visual C# Using Barcode generator for .NET framework Control to generate, create UPC Symbol image in .NET framework applications. GS1  12 Generator In .NET Framework Using Barcode drawer for ASP.NET Control to generate, create UPC A image in ASP.NET applications. Figure 336 Various legitimate pi networks before and after combining components
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Print Barcode In None Using Barcode creator for Software Control to generate, create bar code image in Software applications. Printing GS1 128 In None Using Barcode generation for Software Control to generate, create GS1 128 image in Software applications. Figure 337 A pi network used in a resistive and reactive source and load
Encoding ITF14 In None Using Barcode creation for Software Control to generate, create Case Code image in Software applications. Decoding Code 128 Code Set C In Visual Basic .NET Using Barcode recognizer for .NET framework Control to read, scan read, scan image in VS .NET applications. Figure 338 Pi network before combining calculated components
UPCA Generator In .NET Using Barcode creator for VS .NET Control to generate, create Universal Product Code version A image in .NET framework applications. Code 39 Extended Drawer In None Using Barcode generator for Font Control to generate, create ANSI/AIM Code 39 image in Font applications. Thus, if XCSTRAY XC1, then XCTOTAL will not be able to reach the proper XC value Also, increase XC1 until: XC1 XCSTRAY1 XC1 XCSTRAY1 XCTOTAL XC1 or XC1 XCSTRAY1 XC1 XCSTRAY1 XCNEW ANSI/AIM Code 128 Creator In ObjectiveC Using Barcode creator for iPhone Control to generate, create Code128 image in iPhone applications. Barcode Maker In None Using Barcode maker for Word Control to generate, create bar code image in Microsoft Word applications. This is so XC1 and XCSTRAY1, in parallel, will still equal the computed value of XC1 (XCTOTAL) 7 Convert the reactances calculated to L and C values by: L X 2 f and C 1 2 fX Encode ECC200 In None Using Barcode generator for Online Control to generate, create Data Matrix image in Online applications. Print UPC A In Java Using Barcode generator for Java Control to generate, create UPCA Supplement 5 image in Java applications. The completed network is as shown as Fig 339 T networks are required when two low impedances need to be matched with a high Q, and must be of a higher Q than that available with the L network type Downloaded from Digital Engineering Library @ McGrawHill (wwwdigitalengineeringlibrarycom) Copyright 2004 The McGrawHill Companies All rights reserved Any use is subject to the Terms of Use as given at the website Amplifier Design
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Figure 339 Pi matching network after combining components
Follow this procedure to match two unequal and pure resistances, as shown in the example of Fig 340 1 Decide on the loaded Q (in this case 15), and the frequency (in this case 15 GHz) 2 Find the R value by R RSMALL (Q2 1); R 12 (152 1); R 2712 ohms RSMALL is the smaller value of the two resistances, whether it is RS or RL 3 Find XS1 4 Find XP1 5 Find: "R" RL 2712 58 QRS R /Q 15 12 2712/15 180 ohms 181 ohms Q2 6 Find: XP2 7 Find: XS2
"R" Q2
2712 676 401 ohms
Q2RL
676 58 392 ohms
8 XP1 and XP2 are combined by: XP1XP2 XP1 XP2 181 401 181 401
XTOTAL
125 ohms
Downloaded from Digital Engineering Library @ McGrawHill (wwwdigitalengineeringlibrarycom) Copyright 2004 The McGrawHill Companies All rights reserved Any use is subject to the Terms of Use as given at the website Amplifier Design
Amplifier Design
Figure 340 Designing a T network for use between a resistive source and load
9 The circuit is shown completed in Fig 341 Other possible circuit configurations can be used as required (Fig 342) Figure 342a, b, and c are combined as in step 8 above, but the signs must be maintained for b and c because of the opposite reactance employed ( for inductors and for capacitors) Wideband matching Sometimes it may be necessary to design a lowQ, very
wideband matching network This can be done as follows, by using Fig 343a for a pure resistive load that is smaller than the pure resistive source or by employing Fig 343b for a pure resistive load that is larger than the pure resistive source XS1 and XP1 can be considered as a separate L network from XS2 and XP2, so each L may be oriented any way that is convenient For instance, XS1 may be an inductor, so XP1 must then be a capacitor; however, XS2 may be the capacitor, with XP2 being the inductor: 1 Solve for R : "R" 2 Solve for loaded Q: Q 3 Complete for Fig 343a: XP2 "R" Q2 Q2 "R" RL 1 397 ohms (Q2 219) XS2 XP1 RS Q1 Q1 RS "R" 1 229 ohms (Q1 XS1 Q2RL and 328 ohms and 1896 ohms "R" RSMALLER 1 22 RS RL 87 ohms 218) Q1"R" Downloaded from Digital Engineering Library @ McGrawHill (wwwdigitalengineeringlibrarycom) Copyright 2004 The McGrawHill Companies All rights reserved Any use is subject to the Terms of Use as given at the website Amplifier Design
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Figure 341 Values for a completed T network
4 Or complete for Fig 343b: XP2 XP1 RP Q "R" Q 227 ohms 395 ohms and and XS2 XS1 Q"R" QRS 19 ohms 33 ohms It is possible to match for increasingly wider bandwidths by adding sections as shown in Fig 344: 1 Maximum bandwidth is always achieved if the ratios of each of the two ensuing resistances are equal, or: "R"1 RSMALLER "R"2 "R"1 "R"3 "R"2 R LARGER "R"n RS, or adopt the Fig 343a RS

